diff options
Diffstat (limited to 'gcc/cccp.c')
| -rwxr-xr-x | gcc/cccp.c | 10833 |
1 files changed, 0 insertions, 10833 deletions
diff --git a/gcc/cccp.c b/gcc/cccp.c deleted file mode 100755 index f8c1725..0000000 --- a/gcc/cccp.c +++ /dev/null @@ -1,10833 +0,0 @@ -/* C Compatible Compiler Preprocessor (CCCP) - Copyright (C) 1986, 87, 89, 92-98, 1999 Free Software Foundation, Inc. - Written by Paul Rubin, June 1986 - Adapted to ANSI C, Richard Stallman, Jan 1987 - -This program is free software; you can redistribute it and/or modify it -under the terms of the GNU General Public License as published by the -Free Software Foundation; either version 2, or (at your option) any -later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. */ - -#include "config.h" - -#define PRINTF_PROTO(ARGS, m, n) PVPROTO (ARGS) ATTRIBUTE_PRINTF(m, n) - -#define PRINTF_PROTO_1(ARGS) PRINTF_PROTO(ARGS, 1, 2) -#define PRINTF_PROTO_2(ARGS) PRINTF_PROTO(ARGS, 2, 3) -#define PRINTF_PROTO_3(ARGS) PRINTF_PROTO(ARGS, 3, 4) -#define PRINTF_PROTO_4(ARGS) PRINTF_PROTO(ARGS, 4, 5) - -#include "system.h" -#include <signal.h> - -#ifdef HAVE_SYS_RESOURCE_H -# include <sys/resource.h> -#endif - -typedef unsigned char U_CHAR; - -#include "pcp.h" -#include "prefix.h" - -#ifdef MULTIBYTE_CHARS -#include "mbchar.h" -#include <locale.h> -#endif /* MULTIBYTE_CHARS */ - -#ifndef GET_ENV_PATH_LIST -#define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0) -#endif - -#ifndef STANDARD_INCLUDE_DIR -# define STANDARD_INCLUDE_DIR "/usr/include" -#endif - -/* By default, colon separates directories in a path. */ -#ifndef PATH_SEPARATOR -# define PATH_SEPARATOR ':' -#endif - -/* By default, the suffix for object files is ".o". */ -#ifdef OBJECT_SUFFIX -# define HAVE_OBJECT_SUFFIX -#else -# define OBJECT_SUFFIX ".o" -#endif - -/* Windows does not natively support inodes, and neither does MSDOS. */ -#if (defined (_WIN32) && ! defined (__CYGWIN__)) || defined (__MSDOS__) -#define INO_T_EQ(a, b) 0 -#endif - -/* Find the largest host integer type and set its size and type. - Watch out: on some crazy hosts `long' is shorter than `int'. */ - -#ifndef HOST_WIDE_INT -# if HAVE_INTTYPES_H -# include <inttypes.h> -# define HOST_WIDE_INT intmax_t -# else -# if (HOST_BITS_PER_LONG <= HOST_BITS_PER_INT && HOST_BITS_PER_LONGLONG <= HOST_BITS_PER_INT) -# define HOST_WIDE_INT int -# else -# if (HOST_BITS_PER_LONGLONG <= HOST_BITS_PER_LONG || ! (defined LONG_LONG_MAX || defined LLONG_MAX)) -# define HOST_WIDE_INT long -# else -# define HOST_WIDE_INT long long -# endif -# endif -# endif -#endif - -#ifndef INO_T_EQ -#define INO_T_EQ(a, b) ((a) == (b)) -#endif - -#ifndef INO_T_HASH -#define INO_T_HASH(a) (a) -#endif - -#ifndef INCLUDE_LEN_FUDGE -#define INCLUDE_LEN_FUDGE 0 -#endif - -/* External declarations. */ - -extern char *version_string; -HOST_WIDE_INT parse_escape PROTO((char **, HOST_WIDE_INT)); -HOST_WIDE_INT parse_c_expression PROTO((char *, int)); - -/* Name under which this program was invoked. */ - -static char *progname = "cpp"; /* CYGNUS LOCAL: initialisation added nickc */ - -/* Nonzero means use extra default include directories for C++. */ - -static int cplusplus; - -/* Nonzero means handle cplusplus style comments */ - -static int cplusplus_comments; - -/* Nonzero means handle #import, for objective C. */ - -static int objc; - -/* Nonzero means this is an assembly file, and allow - unknown directives, which could be comments. */ - -static int lang_asm; - -/* CYGNUS LOCAL chill */ -/* Nonzero means handle CHILL comment syntax - and output CHILL string delimeter for __DATE___ etc. */ - -static int chill; -/* END CYGNUS LOCAL chill */ - -/* Current maximum length of directory names in the search path - for include files. (Altered as we get more of them.) */ - -static int max_include_len; - -/* Nonzero means turn NOTREACHED into #pragma NOTREACHED etc */ - -static int for_lint = 0; - -/* Nonzero means copy comments into the output file. */ - -static int put_out_comments = 0; - -/* Nonzero means don't process the ANSI trigraph sequences. */ - -static int no_trigraphs = 0; - -/* Nonzero means print the names of included files rather than - the preprocessed output. 1 means just the #include "...", - 2 means #include <...> as well. */ - -static int print_deps = 0; - -/* Nonzero if missing .h files in -M output are assumed to be generated - files and not errors. */ - -static int print_deps_missing_files = 0; - -/* Nonzero means print names of header files (-H). */ - -static int print_include_names = 0; - -/* Nonzero means don't output line number information. */ - -static int no_line_directives; - -/* Nonzero means output the text in failing conditionals, - inside #failed ... #endfailed. */ - -static int output_conditionals; - -/* dump_only means inhibit output of the preprocessed text - and instead output the definitions of all user-defined - macros in a form suitable for use as input to cccp. - dump_names means pass #define and the macro name through to output. - dump_definitions means pass the whole definition (plus #define) through -*/ - -static enum {dump_none, dump_only, dump_names, dump_definitions} - dump_macros = dump_none; - -/* Nonzero means pass all #define and #undef directives which we actually - process through to the output stream. This feature is used primarily - to allow cc1 to record the #defines and #undefs for the sake of - debuggers which understand about preprocessor macros, but it may - also be useful with -E to figure out how symbols are defined, and - where they are defined. */ -static int debug_output = 0; - -/* Nonzero means pass #include lines through to the output, - even if they are ifdefed out. */ -static int dump_includes; - -/* Nonzero indicates special processing used by the pcp program. The - special effects of this mode are: - - Inhibit all macro expansion, except those inside #if directives. - - Process #define directives normally, and output their contents - to the output file. - - Output preconditions to pcp_outfile indicating all the relevant - preconditions for use of this file in a later cpp run. -*/ -static FILE *pcp_outfile; - -/* Nonzero means we are inside an IF during a -pcp run. In this mode - macro expansion is done, and preconditions are output for all macro - uses requiring them. */ -static int pcp_inside_if; - -/* Nonzero means never to include precompiled files. - This is 1 since there's no way now to make precompiled files, - so it's not worth testing for them. */ -static int no_precomp = 1; - -/* Nonzero means give all the error messages the ANSI standard requires. */ - -int pedantic; - -/* Nonzero means try to make failure to fit ANSI C an error. */ - -static int pedantic_errors; - -/* Nonzero means don't print warning messages. -w. */ - -static int inhibit_warnings = 0; - -/* Nonzero means warn if slash-star appears in a slash-star comment, - or if newline-backslash appears in a slash-slash comment. */ - -static int warn_comments; - -/* Nonzero means warn if a macro argument is (or would be) - stringified with -traditional. */ - -static int warn_stringify; - -/* Nonzero means warn if there are any trigraphs. */ - -static int warn_trigraphs; - -/* Nonzero means warn if undefined identifiers are evaluated in an #if. */ - -static int warn_undef; - -/* Nonzero means warn if #import is used. */ - -static int warn_import = 1; - -/* Nonzero means turn warnings into errors. */ - -static int warnings_are_errors; - -/* Nonzero means try to imitate old fashioned non-ANSI preprocessor. */ - -int traditional; - -/* Nonzero for the 1989 C Standard, including corrigenda and amendments. */ - -int c89; - -/* Nonzero for the 199x C Standard. */ - -int c9x; - -/* Nonzero causes output not to be done, - but directives such as #define that have side effects - are still obeyed. */ - -static int no_output; - -/* Nonzero means we should look for header.gcc files that remap file names. */ -static int remap; - -/* Nonzero means this file was included with a -imacros or -include - command line and should not be recorded as an include file. */ - -static int no_record_file; - -/* Nonzero means that we have finished processing the command line options. - This flag is used to decide whether or not to issue certain errors - and/or warnings. */ - -static int done_initializing = 0; - -/* Line where a newline was first seen in a string constant. */ - -static int multiline_string_line = 0; - -/* I/O buffer structure. - The `fname' field is nonzero for source files and #include files - and for the dummy text used for -D and -U. - It is zero for rescanning results of macro expansion - and for expanding macro arguments. */ -#define INPUT_STACK_MAX 400 -static struct file_buf { - char *fname; - /* Filename specified with #line directive. */ - char *nominal_fname; - /* The length of nominal_fname, which may contain embedded NULs. */ - size_t nominal_fname_len; - /* Include file description. */ - struct include_file *inc; - /* Record where in the search path this file was found. - For #include_next. */ - struct file_name_list *dir; - int lineno; - int length; - U_CHAR *buf; - U_CHAR *bufp; - /* Macro that this level is the expansion of. - Included so that we can reenable the macro - at the end of this level. */ - struct hashnode *macro; - /* Value of if_stack at start of this file. - Used to prohibit unmatched #endif (etc) in an include file. */ - struct if_stack *if_stack; - /* Object to be freed at end of input at this level. */ - U_CHAR *free_ptr; - /* True if this is a system header file; see is_system_include. */ - char system_header_p; -} instack[INPUT_STACK_MAX]; - -static int last_error_tick; /* Incremented each time we print it. */ -static int input_file_stack_tick; /* Incremented when the status changes. */ - -/* Current nesting level of input sources. - `instack[indepth]' is the level currently being read. */ -static int indepth = -1; -#define CHECK_DEPTH(code) \ - if (indepth >= (INPUT_STACK_MAX - 1)) \ - { \ - error_with_line (line_for_error (instack[indepth].lineno), \ - "macro or `#include' recursion too deep"); \ - code; \ - } - -/* Current depth in #include directives that use <...>. */ -static int system_include_depth = 0; - -typedef struct file_buf FILE_BUF; - -/* The output buffer. Its LENGTH field is the amount of room allocated - for the buffer, not the number of chars actually present. To get - that, subtract outbuf.buf from outbuf.bufp. */ - -#define OUTBUF_SIZE 10 /* initial size of output buffer */ -static FILE_BUF outbuf; - -/* Grow output buffer OBUF points at - so it can hold at least NEEDED more chars. */ - -#define check_expand(OBUF, NEEDED) \ - (((OBUF)->length - ((OBUF)->bufp - (OBUF)->buf) <= (NEEDED)) \ - ? grow_outbuf ((OBUF), (NEEDED)) : 0) - -struct file_name_list - { - struct file_name_list *next; - /* If the following is 1, it is a C-language system include - directory. */ - int c_system_include_path; - /* Mapping of file names for this directory. */ - struct file_name_map *name_map; - /* Non-zero if name_map is valid. */ - int got_name_map; - /* The include directory status. */ - struct stat st; - /* The include prefix: "" denotes the working directory, - otherwise fname must end in '/'. - The actual size is dynamically allocated. */ - char fname[1]; - }; - -/* #include "file" looks in source file dir, then stack. */ -/* #include <file> just looks in the stack. */ -/* -I directories are added to the end, then the defaults are added. */ -/* The */ -static struct default_include { - char *fname; /* The name of the directory. */ - char *component; /* The component containing the directory */ - int cplusplus; /* Only look here if we're compiling C++. */ - int cxx_aware; /* Includes in this directory don't need to - be wrapped in extern "C" when compiling - C++. */ -} include_defaults_array[] -#ifdef INCLUDE_DEFAULTS - = INCLUDE_DEFAULTS; -#else - = { - /* Pick up GNU C++ specific include files. */ - { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 }, -#ifdef CROSS_COMPILE - /* This is the dir for fixincludes. Put it just before - the files that we fix. */ - { GCC_INCLUDE_DIR, "GCC", 0, 0 }, - /* For cross-compilation, this dir name is generated - automatically in Makefile.in. */ - { CROSS_INCLUDE_DIR, "GCC", 0, 0 }, -#ifdef TOOL_INCLUDE_DIR - /* This is another place that the target system's headers might be. */ - { TOOL_INCLUDE_DIR, "BINUTILS", 0, 0 }, -#endif -#else /* not CROSS_COMPILE */ -#ifdef LOCAL_INCLUDE_DIR - /* This should be /usr/local/include and should come before - the fixincludes-fixed header files. */ - { LOCAL_INCLUDE_DIR, 0, 0, 1 }, -#endif -#ifdef TOOL_INCLUDE_DIR - /* This is here ahead of GCC_INCLUDE_DIR because assert.h goes here. - Likewise, behind LOCAL_INCLUDE_DIR, where glibc puts its assert.h. */ - { TOOL_INCLUDE_DIR, "BINUTILS", 0, 0 }, -#endif - /* This is the dir for fixincludes. Put it just before - the files that we fix. */ - { GCC_INCLUDE_DIR, "GCC", 0, 0 }, - /* Some systems have an extra dir of include files. */ -#ifdef SYSTEM_INCLUDE_DIR - { SYSTEM_INCLUDE_DIR, 0, 0, 0 }, -#endif -#ifndef STANDARD_INCLUDE_COMPONENT -#define STANDARD_INCLUDE_COMPONENT 0 -#endif - { STANDARD_INCLUDE_DIR, STANDARD_INCLUDE_COMPONENT, 0, 0 }, -#endif /* not CROSS_COMPILE */ - { 0, 0, 0, 0 } - }; -#endif /* no INCLUDE_DEFAULTS */ - -/* The code looks at the defaults through this pointer, rather than through - the constant structure above. This pointer gets changed if an environment - variable specifies other defaults. */ -static struct default_include *include_defaults = include_defaults_array; - -static struct file_name_list *include = 0; /* First dir to search */ - /* First dir to search for <file> */ -/* This is the first element to use for #include <...>. - If it is 0, use the entire chain for such includes. */ -static struct file_name_list *first_bracket_include = 0; -/* This is the first element in the chain that corresponds to - a directory of system header files. */ -static struct file_name_list *first_system_include = 0; -static struct file_name_list *last_include = 0; /* Last in chain */ - -/* Chain of include directories to put at the end of the other chain. */ -static struct file_name_list *after_include = 0; -static struct file_name_list *last_after_include = 0; /* Last in chain */ - -/* Chain to put at the start of the system include files. */ -static struct file_name_list *before_system = 0; -static struct file_name_list *last_before_system = 0; /* Last in chain */ - -/* Directory prefix that should replace `/usr' in the standard - include file directories. */ -static char *include_prefix; - -/* Maintain and search list of included files. */ - -struct include_file { - struct include_file *next; /* for include_hashtab */ - struct include_file *next_ino; /* for include_ino_hashtab */ - char *fname; - /* If the following is the empty string, it means #pragma once - was seen in this include file, or #import was applied to the file. - Otherwise, if it is nonzero, it is a macro name. - Don't include the file again if that macro is defined. */ - U_CHAR *control_macro; - /* Nonzero if the dependency on this include file has been output. */ - int deps_output; - struct stat st; -}; - -/* Hash tables of files already included with #include or #import. - include_hashtab is by full name; include_ino_hashtab is by inode number. */ - -#define INCLUDE_HASHSIZE 61 -static struct include_file *include_hashtab[INCLUDE_HASHSIZE]; -static struct include_file *include_ino_hashtab[INCLUDE_HASHSIZE]; - -/* Global list of strings read in from precompiled files. This list - is kept in the order the strings are read in, with new strings being - added at the end through stringlist_tailp. We use this list to output - the strings at the end of the run. -*/ -static STRINGDEF *stringlist; -static STRINGDEF **stringlist_tailp = &stringlist; - - -/* Structure returned by create_definition */ -typedef struct macrodef MACRODEF; -struct macrodef -{ - struct definition *defn; - U_CHAR *symnam; - int symlen; -}; - -enum sharp_token_type { - NO_SHARP_TOKEN = 0, /* token not present */ - - SHARP_TOKEN = '#', /* token spelled with # only */ - WHITE_SHARP_TOKEN, /* token spelled with # and white space */ - - PERCENT_COLON_TOKEN = '%', /* token spelled with %: only */ - WHITE_PERCENT_COLON_TOKEN /* token spelled with %: and white space */ -}; - -/* Structure allocated for every #define. For a simple replacement - such as - #define foo bar , - nargs = -1, the `pattern' list is null, and the expansion is just - the replacement text. Nargs = 0 means a functionlike macro with no args, - e.g., - #define getchar() getc (stdin) . - When there are args, the expansion is the replacement text with the - args squashed out, and the reflist is a list describing how to - build the output from the input: e.g., "3 chars, then the 1st arg, - then 9 chars, then the 3rd arg, then 0 chars, then the 2nd arg". - The chars here come from the expansion. Whatever is left of the - expansion after the last arg-occurrence is copied after that arg. - Note that the reflist can be arbitrarily long--- - its length depends on the number of times the arguments appear in - the replacement text, not how many args there are. Example: - #define f(x) x+x+x+x+x+x+x would have replacement text "++++++" and - pattern list - { (0, 1), (1, 1), (1, 1), ..., (1, 1), NULL } - where (x, y) means (nchars, argno). */ - -typedef struct definition DEFINITION; -struct definition { - int nargs; - int length; /* length of expansion string */ - int predefined; /* True if the macro was builtin or */ - /* came from the command line */ - U_CHAR *expansion; - int line; /* Line number of definition */ - char *file; /* File of definition */ - size_t file_len; /* Length of file (which can contain NULs) */ - char rest_args; /* Nonzero if last arg. absorbs the rest */ - struct reflist { - struct reflist *next; - - enum sharp_token_type stringify; /* set if a # operator before arg */ - enum sharp_token_type raw_before; /* set if a ## operator before arg */ - enum sharp_token_type raw_after; /* set if a ## operator after arg */ - - char rest_args; /* Nonzero if this arg. absorbs the rest */ - int nchars; /* Number of literal chars to copy before - this arg occurrence. */ - int argno; /* Number of arg to substitute (origin-0) */ - } *pattern; - union { - /* Names of macro args, concatenated in reverse order - with comma-space between them. - The only use of this is that we warn on redefinition - if this differs between the old and new definitions. */ - U_CHAR *argnames; - } args; -}; - -/* different kinds of things that can appear in the value field - of a hash node. Actually, this may be useless now. */ -union hashval { - char *cpval; - DEFINITION *defn; - KEYDEF *keydef; -}; - -/* - * special extension string that can be added to the last macro argument to - * allow it to absorb the "rest" of the arguments when expanded. Ex: - * #define wow(a, b...) process (b, a, b) - * { wow (1, 2, 3); } -> { process (2, 3, 1, 2, 3); } - * { wow (one, two); } -> { process (two, one, two); } - * if this "rest_arg" is used with the concat token '##' and if it is not - * supplied then the token attached to with ## will not be outputted. Ex: - * #define wow (a, b...) process (b ## , a, ## b) - * { wow (1, 2); } -> { process (2, 1, 2); } - * { wow (one); } -> { process (one); { - */ -static char rest_extension[] = "..."; -#define REST_EXTENSION_LENGTH (sizeof (rest_extension) - 1) - -/* This is the implicit parameter name when using variable number of - parameters for macros using the ISO C 9x extension. */ -static char va_args_name[] = "__VA_ARGS__"; -#define VA_ARGS_NAME_LENGTH (sizeof (va_args_name) - 1) - -/* The structure of a node in the hash table. The hash table - has entries for all tokens defined by #define directives (type T_MACRO), - plus some special tokens like __LINE__ (these each have their own - type, and the appropriate code is run when that type of node is seen. - It does not contain control words like "#define", which are recognized - by a separate piece of code. */ - -/* different flavors of hash nodes --- also used in keyword table */ -enum node_type { - T_DEFINE = 1, /* the `#define' keyword */ - T_INCLUDE, /* the `#include' keyword */ - T_INCLUDE_NEXT, /* the `#include_next' keyword */ - T_IMPORT, /* the `#import' keyword */ - T_IFDEF, /* the `#ifdef' keyword */ - T_IFNDEF, /* the `#ifndef' keyword */ - T_IF, /* the `#if' keyword */ - T_ELSE, /* `#else' */ - T_PRAGMA, /* `#pragma' */ - T_ELIF, /* `#elif' */ - T_UNDEF, /* `#undef' */ - T_LINE, /* `#line' */ - T_ERROR, /* `#error' */ - T_WARNING, /* `#warning' */ - T_ENDIF, /* `#endif' */ - T_SCCS, /* `#sccs', used on system V. */ - T_IDENT, /* `#ident', used on system V. */ - T_ASSERT, /* `#assert', taken from system V. */ - T_UNASSERT, /* `#unassert', taken from system V. */ - T_SPECLINE, /* special symbol `__LINE__' */ - T_DATE, /* `__DATE__' */ - T_FILE, /* `__FILE__' */ - T_BASE_FILE, /* `__BASE_FILE__' */ - T_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */ - T_VERSION, /* `__VERSION__' */ - T_SIZE_TYPE, /* `__SIZE_TYPE__' */ - T_PTRDIFF_TYPE, /* `__PTRDIFF_TYPE__' */ - T_WCHAR_TYPE, /* `__WCHAR_TYPE__' */ - T_USER_LABEL_PREFIX_TYPE, /* `__USER_LABEL_PREFIX__' */ - T_REGISTER_PREFIX_TYPE, /* `__REGISTER_PREFIX__' */ - T_IMMEDIATE_PREFIX_TYPE, /* `__IMMEDIATE_PREFIX__' */ - T_TIME, /* `__TIME__' */ - T_CONST, /* Constant value, used by `__STDC__' */ - T_MACRO, /* macro defined by `#define' */ - T_DISABLED, /* macro temporarily turned off for rescan */ - T_SPEC_DEFINED, /* special `defined' macro for use in #if statements */ - T_PCSTRING, /* precompiled string (hashval is KEYDEF *) */ - T_UNUSED /* Used for something not defined. */ - }; - -struct hashnode { - struct hashnode *next; /* double links for easy deletion */ - struct hashnode *prev; - struct hashnode **bucket_hdr; /* also, a back pointer to this node's hash - chain is kept, in case the node is the head - of the chain and gets deleted. */ - enum node_type type; /* type of special token */ - int length; /* length of token, for quick comparison */ - U_CHAR *name; /* the actual name */ - union hashval value; /* pointer to expansion, or whatever */ -}; - -typedef struct hashnode HASHNODE; - -/* Some definitions for the hash table. The hash function MUST be - computed as shown in hashf () below. That is because the rescan - loop computes the hash value `on the fly' for most tokens, - in order to avoid the overhead of a lot of procedure calls to - the hashf () function. Hashf () only exists for the sake of - politeness, for use when speed isn't so important. */ - -#define HASHSIZE 1403 -static HASHNODE *hashtab[HASHSIZE]; -#define HASHSTEP(old, c) ((old << 2) + c) -#define MAKE_POS(v) (v & 0x7fffffff) /* make number positive */ - -/* Symbols to predefine. */ - -#ifdef CPP_PREDEFINES -static char *predefs = CPP_PREDEFINES; -#else -static char *predefs = ""; -#endif - -/* We let tm.h override the types used here, to handle trivial differences - such as the choice of unsigned int or long unsigned int for size_t. - When machines start needing nontrivial differences in the size type, - it would be best to do something here to figure out automatically - from other information what type to use. */ - -/* The string value for __SIZE_TYPE__. */ - -#ifndef SIZE_TYPE -#define SIZE_TYPE "long unsigned int" -#endif - -/* The string value for __PTRDIFF_TYPE__. */ - -#ifndef PTRDIFF_TYPE -#define PTRDIFF_TYPE "long int" -#endif - -/* The string value for __WCHAR_TYPE__. */ - -/* CYGNUS LOCAL vmakarov */ -#ifndef NO_BUILTIN_WCHAR_TYPE -/* END CYGNUS LOCAL */ -#ifndef WCHAR_TYPE -#define WCHAR_TYPE "int" -#endif -char * wchar_type = WCHAR_TYPE; -#undef WCHAR_TYPE -/* CYGNUS LOCAL vmakarov */ -#endif -/* END CYGNUS LOCAL */ - -/* The string value for __USER_LABEL_PREFIX__ */ - -#ifndef USER_LABEL_PREFIX -#define USER_LABEL_PREFIX "" -#endif -char * user_label_prefix = USER_LABEL_PREFIX; -#undef USER_LABEL_PREFIX - -/* The string value for __REGISTER_PREFIX__ */ - -#ifndef REGISTER_PREFIX -#define REGISTER_PREFIX "" -#endif - -/* The string value for __IMMEDIATE_PREFIX__ */ - -#ifndef IMMEDIATE_PREFIX -#define IMMEDIATE_PREFIX "" -#endif - -/* In the definition of a #assert name, this structure forms - a list of the individual values asserted. - Each value is itself a list of "tokens". - These are strings that are compared by name. */ - -struct tokenlist_list { - struct tokenlist_list *next; - struct arglist *tokens; -}; - -struct assertion_hashnode { - struct assertion_hashnode *next; /* double links for easy deletion */ - struct assertion_hashnode *prev; - /* also, a back pointer to this node's hash - chain is kept, in case the node is the head - of the chain and gets deleted. */ - struct assertion_hashnode **bucket_hdr; - int length; /* length of token, for quick comparison */ - U_CHAR *name; /* the actual name */ - /* List of token-sequences. */ - struct tokenlist_list *value; -}; - -typedef struct assertion_hashnode ASSERTION_HASHNODE; - -/* Some definitions for the hash table. The hash function MUST be - computed as shown in hashf below. That is because the rescan - loop computes the hash value `on the fly' for most tokens, - in order to avoid the overhead of a lot of procedure calls to - the hashf function. hashf only exists for the sake of - politeness, for use when speed isn't so important. */ - -#define ASSERTION_HASHSIZE 37 -static ASSERTION_HASHNODE *assertion_hashtab[ASSERTION_HASHSIZE]; - -/* Nonzero means inhibit macroexpansion of what seem to be - assertion tests, in rescan. For #if. */ -static int assertions_flag; - -/* `struct directive' defines one #-directive, including how to handle it. */ - -#define DO_PROTO PROTO((U_CHAR *, U_CHAR *, FILE_BUF *, struct directive *)) - -struct directive { - int length; /* Length of name */ - int (*func) DO_PROTO; /* Function to handle directive */ - char *name; /* Name of directive */ - enum node_type type; /* Code which describes which directive. */ -}; - -#define IS_INCLUDE_DIRECTIVE_TYPE(t) \ -((int) T_INCLUDE <= (int) (t) && (int) (t) <= (int) T_IMPORT) - -/* These functions are declared to return int instead of void since they - are going to be placed in the table and some old compilers have trouble with - pointers to functions returning void. */ - -static int do_assert DO_PROTO; -static int do_define DO_PROTO; -static int do_elif DO_PROTO; -static int do_else DO_PROTO; -static int do_endif DO_PROTO; -static int do_error DO_PROTO; -static int do_ident DO_PROTO; -static int do_if DO_PROTO; -static int do_include DO_PROTO; -static int do_line DO_PROTO; -static int do_pragma DO_PROTO; -#ifdef SCCS_DIRECTIVE -static int do_sccs DO_PROTO; -#endif -static int do_unassert DO_PROTO; -static int do_undef DO_PROTO; -static int do_warning DO_PROTO; -static int do_xifdef DO_PROTO; - -/* Here is the actual list of #-directives, most-often-used first. */ - -static struct directive directive_table[] = { - { 6, do_define, "define", T_DEFINE}, - { 2, do_if, "if", T_IF}, - { 5, do_xifdef, "ifdef", T_IFDEF}, - { 6, do_xifdef, "ifndef", T_IFNDEF}, - { 5, do_endif, "endif", T_ENDIF}, - { 4, do_else, "else", T_ELSE}, - { 4, do_elif, "elif", T_ELIF}, - { 4, do_line, "line", T_LINE}, - { 7, do_include, "include", T_INCLUDE}, - { 12, do_include, "include_next", T_INCLUDE_NEXT}, - { 6, do_include, "import", T_IMPORT}, - { 5, do_undef, "undef", T_UNDEF}, - { 5, do_error, "error", T_ERROR}, - { 7, do_warning, "warning", T_WARNING}, -#ifdef SCCS_DIRECTIVE - { 4, do_sccs, "sccs", T_SCCS}, -#endif - { 6, do_pragma, "pragma", T_PRAGMA}, - { 5, do_ident, "ident", T_IDENT}, - { 6, do_assert, "assert", T_ASSERT}, - { 8, do_unassert, "unassert", T_UNASSERT}, - { -1, 0, "", T_UNUSED}, -}; - -/* When a directive handler is called, - this points to the # (or the : of the %:) that started the directive. */ -U_CHAR *directive_start; - -/* table to tell if char can be part of a C identifier. */ -U_CHAR is_idchar[256]; -/* table to tell if char can be first char of a c identifier. */ -U_CHAR is_idstart[256]; -/* table to tell if c is horizontal space. */ -static U_CHAR is_hor_space[256]; -/* table to tell if c is horizontal or vertical space. */ -U_CHAR is_space[256]; -/* names of some characters */ -static char *char_name[256]; - -#define SKIP_WHITE_SPACE(p) do { while (is_hor_space[*p]) p++; } while (0) -#define SKIP_ALL_WHITE_SPACE(p) do { while (is_space[*p]) p++; } while (0) - -static int errors = 0; /* Error counter for exit code */ - -/* Name of output file, for error messages. */ -static char *out_fname; - -/* Nonzero to ignore \ in string constants. Use to treat #line 1 "A:\file.h - as a non-form feed. If you want it to be a form feed, you must use - # 1 "\f". */ -static int ignore_escape_flag = 1; - -/* Stack of conditionals currently in progress - (including both successful and failing conditionals). */ - -struct if_stack { - struct if_stack *next; /* for chaining to the next stack frame */ - char *fname; /* copied from input when frame is made */ - size_t fname_len; /* similarly */ - int lineno; /* similarly */ - int if_succeeded; /* true if a leg of this if-group - has been passed through rescan */ - U_CHAR *control_macro; /* For #ifndef at start of file, - this is the macro name tested. */ - enum node_type type; /* type of last directive seen in this group */ -}; -typedef struct if_stack IF_STACK_FRAME; -static IF_STACK_FRAME *if_stack = NULL; - -/* Buffer of -M output. */ -static char *deps_buffer; - -/* Number of bytes allocated in above. */ -static int deps_allocated_size; - -/* Number of bytes used. */ -static int deps_size; - -/* Number of bytes since the last newline. */ -static int deps_column; - -/* Nonzero means -I- has been seen, - so don't look for #include "foo" the source-file directory. */ -static int ignore_srcdir; - -static int safe_read PROTO((int, char *, int)); -static void safe_write PROTO((int, char *, int)); -static void eprint_string PROTO((char *, size_t)); - -int main PROTO((int, char **)); - -static void path_include PROTO((char *)); - -static U_CHAR *index0 PROTO((U_CHAR *, int, size_t)); - -static void trigraph_pcp PROTO((FILE_BUF *)); - -static void newline_fix PROTO((U_CHAR *)); -static void name_newline_fix PROTO((U_CHAR *)); - -static char *get_lintcmd PROTO((U_CHAR *, U_CHAR *, U_CHAR **, int *, int *)); - -static void rescan PROTO((FILE_BUF *, int)); - -static FILE_BUF expand_to_temp_buffer PROTO((U_CHAR *, U_CHAR *, int, int)); - -static int handle_directive PROTO((FILE_BUF *, FILE_BUF *)); - -static struct tm *timestamp PROTO((void)); -static void special_symbol PROTO((HASHNODE *, FILE_BUF *)); - -static int is_system_include PROTO((char *)); -static char *base_name PROTO((char *)); -static int absolute_filename PROTO((char *)); -static size_t simplify_filename PROTO((char *)); - -static char *read_filename_string PROTO((int, FILE *)); -static struct file_name_map *read_name_map PROTO((char *)); -static int open_include_file PROTO((char *, struct file_name_list *, U_CHAR *, struct include_file **)); -static char *remap_include_file PROTO((char *, struct file_name_list *)); -static int lookup_ino_include PROTO((struct include_file *)); - -static void finclude PROTO((int, struct include_file *, FILE_BUF *, int, struct file_name_list *)); -static void record_control_macro PROTO((struct include_file *, U_CHAR *)); - -static char *check_precompiled PROTO((int, struct stat *, char *, char **)); -static int check_preconditions PROTO((char *)); -static void pcfinclude PROTO((U_CHAR *, U_CHAR *, FILE_BUF *)); -static void pcstring_used PROTO((HASHNODE *)); -static void write_output PROTO((void)); -static void pass_thru_directive PROTO((U_CHAR *, U_CHAR *, FILE_BUF *, struct directive *)); - -static MACRODEF create_definition PROTO((U_CHAR *, U_CHAR *, FILE_BUF *)); - -static int check_macro_name PROTO((U_CHAR *, char *)); -static int compare_defs PROTO((DEFINITION *, DEFINITION *)); -static int comp_def_part PROTO((int, U_CHAR *, int, U_CHAR *, int, int)); - -static DEFINITION *collect_expansion PROTO((U_CHAR *, U_CHAR *, int, struct arglist *)); - -int check_assertion PROTO((U_CHAR *, int, int, struct arglist *)); -static int compare_token_lists PROTO((struct arglist *, struct arglist *)); - -static struct arglist *read_token_list PROTO((U_CHAR **, U_CHAR *, int *)); -static void free_token_list PROTO((struct arglist *)); - -static ASSERTION_HASHNODE *assertion_install PROTO((U_CHAR *, int, int)); -static ASSERTION_HASHNODE *assertion_lookup PROTO((U_CHAR *, int, int)); -static void delete_assertion PROTO((ASSERTION_HASHNODE *)); - -static void do_once PROTO((void)); - -static HOST_WIDE_INT eval_if_expression PROTO((U_CHAR *, int)); -static void conditional_skip PROTO((FILE_BUF *, int, enum node_type, U_CHAR *, FILE_BUF *)); -static void skip_if_group PROTO((FILE_BUF *, int, FILE_BUF *)); -static void validate_else PROTO((U_CHAR *, U_CHAR *)); - -static U_CHAR *skip_to_end_of_comment PROTO((FILE_BUF *, int *, int)); -static U_CHAR *skip_quoted_string PROTO((U_CHAR *, U_CHAR *, int, int *, int *, int *)); -static char *quote_string PROTO((char *, char *, size_t)); -static U_CHAR *skip_paren_group PROTO((FILE_BUF *)); - -/* Last arg to output_line_directive. */ -enum file_change_code {same_file, enter_file, leave_file}; -static void output_line_directive PROTO((FILE_BUF *, FILE_BUF *, int, enum file_change_code)); - -static void macroexpand PROTO((HASHNODE *, FILE_BUF *)); - -struct argdata; -static char *macarg PROTO((struct argdata *, int)); - -static U_CHAR *macarg1 PROTO((U_CHAR *, U_CHAR *, struct hashnode *, int *, int *, int *, int)); - -static int discard_comments PROTO((U_CHAR *, int, int)); - -static int change_newlines PROTO((U_CHAR *, int)); - -static char *my_strerror PROTO((int)); -void error PRINTF_PROTO_1((char *, ...)); -static void verror PROTO((char *, va_list)); -static void error_from_errno PROTO((char *)); -void warning PRINTF_PROTO_1((char *, ...)); -static void vwarning PROTO((char *, va_list)); -static void error_with_line PRINTF_PROTO_2((int, char *, ...)); -static void verror_with_line PROTO((int, char *, va_list)); -static void vwarning_with_line PROTO((int, char *, va_list)); -static void warning_with_line PRINTF_PROTO_2((int, char *, ...)); -void pedwarn PRINTF_PROTO_1((char *, ...)); -void pedwarn_with_line PRINTF_PROTO_2((int, char *, ...)); -static void pedwarn_with_file_and_line PRINTF_PROTO_4((char *, size_t, int, char *, ...)); - -static void print_containing_files PROTO((void)); - -static int line_for_error PROTO((int)); -static int grow_outbuf PROTO((FILE_BUF *, int)); - -static HASHNODE *install PROTO((U_CHAR *, int, enum node_type, char *, int)); -HASHNODE *lookup PROTO((U_CHAR *, int, int)); -static void delete_macro PROTO((HASHNODE *)); -static int hashf PROTO((U_CHAR *, int, int)); - -static void dump_single_macro PROTO((HASHNODE *, FILE *)); -static void dump_all_macros PROTO((void)); -static void dump_defn_1 PROTO((U_CHAR *, int, int, FILE *)); -static void dump_arg_n PROTO((DEFINITION *, int, FILE *)); - -static void initialize_char_syntax PROTO((void)); -static void initialize_builtins PROTO((FILE_BUF *, FILE_BUF *)); - -static void make_definition PROTO((char *)); -static void make_undef PROTO((char *, FILE_BUF *)); - -static void make_assertion PROTO((char *, char *)); - -static struct file_name_list *new_include_prefix PROTO((struct file_name_list *, const char *, const char *, const char *)); -static void append_include_chain PROTO((struct file_name_list *, struct file_name_list *)); - -static int quote_string_for_make PROTO((char *, char *)); -static void deps_output PROTO((char *, int)); - -static void fatal PRINTF_PROTO_1((char *, ...)) __attribute__ ((noreturn)); -void fancy_abort PROTO((void)) __attribute__ ((noreturn)); -static void perror_with_name PROTO((char *)); -static void pfatal_with_name PROTO((char *)) __attribute__ ((noreturn)); -static void pipe_closed PROTO((int)) __attribute__ ((noreturn)); - -static void memory_full PROTO((void)) __attribute__ ((noreturn)); -static char *savestring PROTO((char *)); -static void print_help PROTO((void)); - -/* Read LEN bytes at PTR from descriptor DESC, for file FILENAME, - retrying if necessary. If MAX_READ_LEN is defined, read at most - that bytes at a time. Return a negative value if an error occurs, - otherwise return the actual number of bytes read, - which must be LEN unless end-of-file was reached. */ - -static int -safe_read (desc, ptr, len) - int desc; - char *ptr; - int len; -{ - int left, rcount, nchars; - - left = len; - while (left > 0) { - rcount = left; -#ifdef MAX_READ_LEN - if (rcount > MAX_READ_LEN) - rcount = MAX_READ_LEN; -#endif - nchars = read (desc, ptr, rcount); - if (nchars < 0) - { -#ifdef EINTR - if (errno == EINTR) - continue; -#endif - return nchars; - } - if (nchars == 0) - break; - ptr += nchars; - left -= nchars; - } - return len - left; -} - -/* Write LEN bytes at PTR to descriptor DESC, - retrying if necessary, and treating any real error as fatal. - If MAX_WRITE_LEN is defined, write at most that many bytes at a time. */ - -static void -safe_write (desc, ptr, len) - int desc; - char *ptr; - int len; -{ - int wcount, written; - - while (len > 0) { - wcount = len; -#ifdef MAX_WRITE_LEN - if (wcount > MAX_WRITE_LEN) - wcount = MAX_WRITE_LEN; -#endif - written = write (desc, ptr, wcount); - if (written < 0) - { -#ifdef EINTR - if (errno == EINTR) - continue; -#endif - pfatal_with_name (out_fname); - } - ptr += written; - len -= written; - } -} - -/* Print a string to stderr, with extra handling in case it contains - embedded NUL characters. Any present are written as is. - - Using fwrite for this purpose produces undesireable results on VMS - when stderr happens to be a record oriented file, such as a batch log - file, rather than a stream oriented one. */ - -static void -eprint_string (string, length) - char *string; - size_t length; -{ - size_t segment_length; - - do { - fprintf(stderr, "%s", string); - length -= (segment_length = strlen(string)); - if (length > 0) - { - fputc('\0', stderr); - length -= 1; - /* Advance past the portion which has already been printed. */ - string += segment_length + 1; - } - } while (length > 0); -} - - -static void -print_help () -{ - printf ("Usage: %s [switches] input output\n", progname); - printf ("Switches:\n"); - printf (" -include <file> Include the contents of <file> before other files\n"); - printf (" -imacros <file> Accept definition of marcos in <file>\n"); - printf (" -iprefix <path> Specify <path> as a prefix for next two options\n"); - printf (" -iwithprefix <dir> Add <dir> to the end of the system include paths\n"); - printf (" -iwithprefixbefore <dir> Add <dir> to the end of the main include paths\n"); - printf (" -isystem <dir> Add <dir> to the start of the system include paths\n"); - printf (" -idirafter <dir> Add <dir> to the end of the system include paths\n"); - printf (" -I <dir> Add <dir> to the end of the main include paths\n"); - printf (" -nostdinc Do not search the system include directories\n"); - printf (" -nostdinc++ Do not search the system include directories for C++\n"); - printf (" -o <file> Put output into <file>\n"); - printf (" -pedantic Issue all warnings demanded by strict ANSI C\n"); - printf (" -traditional Follow K&R pre-processor behaviour\n"); - printf (" -trigraphs Support ANSI C trigraphs\n"); - printf (" -lang-c Assume that the input sources are in C\n"); - printf (" -lang-c89 Assume that the input is C89; depricated\n"); - printf (" -lang-c++ Assume that the input sources are in C++\n"); - printf (" -lang-objc Assume that the input sources are in ObjectiveC\n"); - printf (" -lang-objc++ Assume that the input sources are in ObjectiveC++\n"); - printf (" -lang-asm Assume that the input sources are in assembler\n"); - printf (" -lang-chill Assume that the input sources are in Chill\n"); - printf (" -std=<std name> Specify the conformance standard; one of:\n"); - printf (" gnu89, gnu9x, c89, c9x, iso9899:1990,\n"); - printf (" iso9899:199409, iso9899:199x\n"); - printf (" -+ Allow parsing of C++ style features\n"); - printf (" -w Inhibit warning messages\n"); - printf (" -Wtrigraphs Warn if trigraphs are encountered\n"); - printf (" -Wno-trigraphs Do not warn about trigraphs\n"); - printf (" -Wcomment{s} Warn if one comment starts inside another\n"); - printf (" -Wno-comment{s} Do not warn about comments\n"); - printf (" -Wtraditional Warn if a macro argument is/would be turned into\n"); - printf (" a string if -tradtional is specified\n"); - printf (" -Wno-traditional Do not warn about stringification\n"); - printf (" -Wundef Warn if an undefined macro is used by #if\n"); - printf (" -Wno-undef Do not warn about testing udefined macros\n"); - printf (" -Wimport Warn about the use of the #import directive\n"); - printf (" -Wno-import Do not warn about the use of #import\n"); - printf (" -Werror Treat all warnings as errors\n"); - printf (" -Wno-error Do not treat warnings as errors\n"); - printf (" -Wall Enable all preprocessor warnings\n"); - printf (" -M Generate make dependencies\n"); - printf (" -MM As -M, but ignore system header files\n"); - printf (" -MD As -M, but put output in a .d file\n"); - printf (" -MMD As -MD, but ignore system header files\n"); - printf (" -MG Treat missing header file as generated files\n"); - printf (" -g Include #define and #undef directives in the output\n"); - printf (" -D<macro> Define a <macro> with string '1' as its value\n"); - printf (" -D<macro>=<val> Define a <macro> with <val> as its value\n"); - printf (" -A<question> (<answer>) Assert the <answer> to <question>\n"); - printf (" -U<macro> Undefine <macro> \n"); - printf (" -u or -undef Do not predefine any macros\n"); - printf (" -v Display the version number\n"); - printf (" -H Print the name of header files as they are used\n"); - printf (" -C Do not discard comments\n"); - printf (" -dM Display a list of macro definitions active at end\n"); - printf (" -dD Preserve macro definitions in output\n"); - printf (" -dN As -dD except that only the names are preserved\n"); - printf (" -dI Include #include directives in the output\n"); - printf (" -ifoutput Describe skipped code blocks in output \n"); - printf (" -P Do not generate #line directives\n"); - printf (" -$ Do not include '$' in identifiers\n"); - printf (" -remap Remap file names when including files.\n"); - printf (" -h or --help Display this information\n"); -} - -int -main (argc, argv) - int argc; - char **argv; -{ - struct stat st; - char *in_fname; - char *cp; - int f, i; - FILE_BUF *fp; - char **pend_files = (char **) xmalloc (argc * sizeof (char *)); - char **pend_defs = (char **) xmalloc (argc * sizeof (char *)); - char **pend_undefs = (char **) xmalloc (argc * sizeof (char *)); - char **pend_assertions = (char **) xmalloc (argc * sizeof (char *)); - char **pend_includes = (char **) xmalloc (argc * sizeof (char *)); - - /* Record the option used with each element of pend_assertions. - This is preparation for supporting more than one option for making - an assertion. */ - char **pend_assertion_options = (char **) xmalloc (argc * sizeof (char *)); - int inhibit_predefs = 0; - int no_standard_includes = 0; - int no_standard_cplusplus_includes = 0; - int missing_newline = 0; - - /* Non-0 means don't output the preprocessed program. */ - int inhibit_output = 0; - /* Non-0 means -v, so print the full set of include dirs. */ - int verbose = 0; - - /* File name which deps are being written to. - This is 0 if deps are being written to stdout. */ - char *deps_file = 0; - /* Fopen file mode to open deps_file with. */ - char *deps_mode = "a"; - /* Stream on which to print the dependency information. */ - FILE *deps_stream = 0; - /* Target-name to write with the dependency information. */ - char *deps_target = 0; - -#if defined (RLIMIT_STACK) && defined (HAVE_GETRLIMIT) && defined (HAVE_SETRLIMIT) - /* Get rid of any avoidable limit on stack size. */ - { - struct rlimit rlim; - - /* Set the stack limit huge so that alloca (particularly stringtab - in dbxread.c) does not fail. */ - getrlimit (RLIMIT_STACK, &rlim); - rlim.rlim_cur = rlim.rlim_max; - setrlimit (RLIMIT_STACK, &rlim); - } -#endif - -#ifdef SIGPIPE - signal (SIGPIPE, pipe_closed); -#endif - - progname = base_name (argv[0]); - - - in_fname = NULL; - out_fname = NULL; - - /* Initialize is_idchar. */ - initialize_char_syntax (); - - no_line_directives = 0; - no_trigraphs = 1; - dump_macros = dump_none; - no_output = 0; - cplusplus = 0; - cplusplus_comments = 1; - - bzero ((char *) pend_files, argc * sizeof (char *)); - bzero ((char *) pend_defs, argc * sizeof (char *)); - bzero ((char *) pend_undefs, argc * sizeof (char *)); - bzero ((char *) pend_assertions, argc * sizeof (char *)); - bzero ((char *) pend_includes, argc * sizeof (char *)); - -#ifdef MULTIBYTE_CHARS - /* Change to the native locale for multibyte conversions. */ - setlocale (LC_CTYPE, ""); - literal_codeset = getenv ("LANG"); -#endif - - /* Process switches and find input file name. */ - - for (i = 1; i < argc; i++) { - if (argv[i][0] != '-') { - if (out_fname != NULL) - { - print_help (); - fatal ("Too many arguments"); - } - else if (in_fname != NULL) - out_fname = argv[i]; - else - in_fname = argv[i]; - } else { - switch (argv[i][1]) { - - case 'i': - if (!strcmp (argv[i], "-include")) { - int temp = i; - - if (i + 1 == argc) - fatal ("Filename missing after `-include' option"); - else - simplify_filename (pend_includes[temp] = argv[++i]); - } - if (!strcmp (argv[i], "-imacros")) { - int temp = i; - - if (i + 1 == argc) - fatal ("Filename missing after `-imacros' option"); - else - simplify_filename (pend_files[temp] = argv[++i]); - } - if (!strcmp (argv[i], "-iprefix")) { - if (i + 1 == argc) - fatal ("Filename missing after `-iprefix' option"); - else - include_prefix = argv[++i]; - } - if (!strcmp (argv[i], "-ifoutput")) { - output_conditionals = 1; - } - if (!strcmp (argv[i], "-isystem")) { - struct file_name_list *dirtmp; - - if (! (dirtmp = new_include_prefix (NULL_PTR, NULL_PTR, - "", argv[++i]))) - break; - dirtmp->c_system_include_path = 1; - - if (before_system == 0) - before_system = dirtmp; - else - last_before_system->next = dirtmp; - last_before_system = dirtmp; /* Tail follows the last one */ - } - /* Add directory to end of path for includes, - with the default prefix at the front of its name. */ - if (!strcmp (argv[i], "-iwithprefix")) { - struct file_name_list *dirtmp; - char *prefix; - - if (include_prefix != 0) - prefix = include_prefix; - else { - prefix = savestring (GCC_INCLUDE_DIR); - /* Remove the `include' from /usr/local/lib/gcc.../include. */ - if (!strcmp (prefix + strlen (prefix) - 8, "/include")) - prefix[strlen (prefix) - 7] = 0; - } - - if (! (dirtmp = new_include_prefix (NULL_PTR, NULL_PTR, - prefix, argv[++i]))) - break; - - if (after_include == 0) - after_include = dirtmp; - else - last_after_include->next = dirtmp; - last_after_include = dirtmp; /* Tail follows the last one */ - } - /* Add directory to main path for includes, - with the default prefix at the front of its name. */ - if (!strcmp (argv[i], "-iwithprefixbefore")) { - struct file_name_list *dirtmp; - char *prefix; - - if (include_prefix != 0) - prefix = include_prefix; - else { - prefix = savestring (GCC_INCLUDE_DIR); - /* Remove the `include' from /usr/local/lib/gcc.../include. */ - if (!strcmp (prefix + strlen (prefix) - 8, "/include")) - prefix[strlen (prefix) - 7] = 0; - } - - dirtmp = new_include_prefix (NULL_PTR, NULL_PTR, prefix, argv[++i]); - append_include_chain (dirtmp, dirtmp); - } - /* Add directory to end of path for includes. */ - if (!strcmp (argv[i], "-idirafter")) { - struct file_name_list *dirtmp; - - if (! (dirtmp = new_include_prefix (NULL_PTR, NULL_PTR, - "", argv[++i]))) - break; - - if (after_include == 0) - after_include = dirtmp; - else - last_after_include->next = dirtmp; - last_after_include = dirtmp; /* Tail follows the last one */ - } - break; - - case 'o': - if (out_fname != NULL) - fatal ("Output filename specified twice"); - if (i + 1 == argc) - fatal ("Filename missing after -o option"); - out_fname = argv[++i]; - if (!strcmp (out_fname, "-")) - out_fname = ""; - break; - - case 'p': - if (!strcmp (argv[i], "-pedantic")) - pedantic = 1; - else if (!strcmp (argv[i], "-pedantic-errors")) { - pedantic = 1; - pedantic_errors = 1; - } else if (!strcmp (argv[i], "-pcp")) { - char *pcp_fname; - if (i + 1 == argc) - fatal ("Filename missing after -pcp option"); - pcp_fname = argv[++i]; - pcp_outfile - = ((pcp_fname[0] != '-' || pcp_fname[1] != '\0') - ? fopen (pcp_fname, "w") - : stdout); - if (pcp_outfile == 0) - pfatal_with_name (pcp_fname); - no_precomp = 1; - } - break; - - case 't': - if (!strcmp (argv[i], "-traditional")) { - traditional = 1; - cplusplus_comments = 0; - } else if (!strcmp (argv[i], "-trigraphs")) { -/* CYGNUS LOCAL chill */ - if (!chill) -/* END CYGNUS LOCAL chill */ - no_trigraphs = 0; - } - break; - - case 'l': - if (! strcmp (argv[i], "-lang-c")) - cplusplus = 0, cplusplus_comments = 1, c89 = 0, c9x = 1, objc = 0; - else if (! strcmp (argv[i], "-lang-c89")) - cplusplus = 0, cplusplus_comments = 0, c89 = 1, c9x = 0, objc = 0; - else if (! strcmp (argv[i], "-lang-c++")) - cplusplus = 1, cplusplus_comments = 1, c89 = 0, c9x = 0, objc = 0; - else if (! strcmp (argv[i], "-lang-objc")) - cplusplus = 0, cplusplus_comments = 1, c89 = 0, c9x = 0, objc = 1; - else if (! strcmp (argv[i], "-lang-objc++")) - cplusplus = 1, cplusplus_comments = 1, c89 = 0, c9x = 0, objc = 1; - else if (! strcmp (argv[i], "-lang-asm")) - lang_asm = 1; - else if (! strcmp (argv[i], "-lint")) - for_lint = 1; -/* CYGNUS LOCAL chill */ - if (! strcmp (argv[i], "-lang-chill")) - objc = 0, cplusplus = 0, chill = 1, /* traditional = 1, */ - no_trigraphs = 1, cplusplus_comments = 0;; -/* END CYGNUS LOCAL chill */ - break; - - case '+': - cplusplus = 1, cplusplus_comments = 1; - break; - - case 's': - if (!strcmp (argv[i], "-std=iso9899:1990") - || !strcmp (argv[i], "-std=iso9899:199409") - || !strcmp (argv[i], "-std=c89") - || !strcmp (argv[i], "-std=gnu89")) - cplusplus = 0, cplusplus_comments = 0, c89 = 1, c9x = 0, objc = 0; - else if (!strcmp (argv[i], "-std=iso9899:199x") - || !strcmp (argv[i], "-std=c9x") - || !strcmp (argv[i], "-std=gnu9x")) - cplusplus = 0, cplusplus_comments = 1, c89 = 0, c9x = 1, objc = 0; - break; - - case 'w': - inhibit_warnings = 1; - break; - - case 'W': - if (!strcmp (argv[i], "-Wtrigraphs")) - warn_trigraphs = 1; - else if (!strcmp (argv[i], "-Wno-trigraphs")) - warn_trigraphs = 0; - else if (!strcmp (argv[i], "-Wcomment")) - warn_comments = 1; - else if (!strcmp (argv[i], "-Wno-comment")) - warn_comments = 0; - else if (!strcmp (argv[i], "-Wcomments")) - warn_comments = 1; - else if (!strcmp (argv[i], "-Wno-comments")) - warn_comments = 0; - else if (!strcmp (argv[i], "-Wtraditional")) - warn_stringify = 1; - else if (!strcmp (argv[i], "-Wno-traditional")) - warn_stringify = 0; - else if (!strcmp (argv[i], "-Wundef")) - warn_undef = 1; - else if (!strcmp (argv[i], "-Wno-undef")) - warn_undef = 0; - else if (!strcmp (argv[i], "-Wimport")) - warn_import = 1; - else if (!strcmp (argv[i], "-Wno-import")) - warn_import = 0; - else if (!strcmp (argv[i], "-Werror")) - warnings_are_errors = 1; - else if (!strcmp (argv[i], "-Wno-error")) - warnings_are_errors = 0; - else if (!strcmp (argv[i], "-Wall")) - { - warn_trigraphs = 1; - warn_comments = 1; - } - break; - - case 'f': - if (!strcmp (argv[i], "-fleading-underscore")) - user_label_prefix = "_"; - else if (!strcmp (argv[i], "-fno-leading-underscore")) - user_label_prefix = ""; - break; - - case 'M': - /* The style of the choices here is a bit mixed. - The chosen scheme is a hybrid of keeping all options in one string - and specifying each option in a separate argument: - -M|-MM|-MD file|-MMD file [-MG]. An alternative is: - -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely: - -M[M][G][D file]. This is awkward to handle in specs, and is not - as extensible. */ - /* ??? -MG must be specified in addition to one of -M or -MM. - This can be relaxed in the future without breaking anything. - The converse isn't true. */ - - /* -MG isn't valid with -MD or -MMD. This is checked for later. */ - if (!strcmp (argv[i], "-MG")) - { - print_deps_missing_files = 1; - break; - } - if (!strcmp (argv[i], "-M")) - print_deps = 2; - else if (!strcmp (argv[i], "-MM")) - print_deps = 1; - else if (!strcmp (argv[i], "-MD")) - print_deps = 2; - else if (!strcmp (argv[i], "-MMD")) - print_deps = 1; - /* For -MD and -MMD options, write deps on file named by next arg. */ - if (!strcmp (argv[i], "-MD") - || !strcmp (argv[i], "-MMD")) { - if (i + 1 == argc) - fatal ("Filename missing after %s option", argv[i]); - i++; - deps_file = argv[i]; - deps_mode = "w"; - } else { - /* For -M and -MM, write deps on standard output - and suppress the usual output. */ - deps_stream = stdout; - inhibit_output = 1; - } - break; - - case 'd': - { - char *p = argv[i] + 2; - char c; - while ((c = *p++)) { - /* Arg to -d specifies what parts of macros to dump */ - switch (c) { - case 'M': - dump_macros = dump_only; - no_output = 1; - break; - case 'N': - dump_macros = dump_names; - break; - case 'D': - dump_macros = dump_definitions; - break; - case 'I': - dump_includes = 1; - break; - } - } - } - break; - - case 'g': - if (argv[i][2] == '3') - debug_output = 1; - break; - - case '-': - if (strcmp (argv[i], "--help") != 0) - return i; - print_help (); - exit (0); - break; - - case 'v': - fprintf (stderr, "GNU CPP version %s", version_string); -#ifdef TARGET_VERSION - TARGET_VERSION; -#endif - fprintf (stderr, "\n"); - verbose = 1; - break; - - case 'H': - print_include_names = 1; - break; - - case 'D': - if (argv[i][2] != 0) - pend_defs[i] = argv[i] + 2; - else if (i + 1 == argc) - fatal ("Macro name missing after -D option"); - else - i++, pend_defs[i] = argv[i]; - break; - - case 'A': - { - char *p; - - if (argv[i][2] != 0) - p = argv[i] + 2; - else if (i + 1 == argc) - fatal ("Assertion missing after -A option"); - else - p = argv[++i]; - - if (!strcmp (p, "-")) { - /* -A- eliminates all predefined macros and assertions. - Let's include also any that were specified earlier - on the command line. That way we can get rid of any - that were passed automatically in from GCC. */ - int j; - inhibit_predefs = 1; - for (j = 0; j < i; j++) - pend_defs[j] = pend_assertions[j] = 0; - } else { - pend_assertions[i] = p; - pend_assertion_options[i] = "-A"; - } - } - break; - - case 'U': /* JF #undef something */ - if (argv[i][2] != 0) - pend_undefs[i] = argv[i] + 2; - else if (i + 1 == argc) - fatal ("Macro name missing after -U option"); - else - pend_undefs[i] = argv[i+1], i++; - break; - - case 'C': - put_out_comments = 1; - break; - - case 'E': /* -E comes from cc -E; ignore it. */ - break; - - case 'P': - no_line_directives = 1; - break; - - case '$': /* Don't include $ in identifiers. */ - is_idchar['$'] = is_idstart['$'] = 0; - break; - - case 'I': /* Add directory to path for includes. */ - { - struct file_name_list *dirtmp; - - if (! ignore_srcdir && !strcmp (argv[i] + 2, "-")) { - ignore_srcdir = 1; - /* Don't use any preceding -I directories for #include <...>. */ - first_bracket_include = 0; - } - else { - dirtmp = new_include_prefix (last_include, NULL_PTR, "", - argv[i][2] ? argv[i] + 2 : argv[++i]); - append_include_chain (dirtmp, dirtmp); - } - } - break; - - case 'n': - if (!strcmp (argv[i], "-nostdinc")) - /* -nostdinc causes no default include directories. - You must specify all include-file directories with -I. */ - no_standard_includes = 1; - else if (!strcmp (argv[i], "-nostdinc++")) - /* -nostdinc++ causes no default C++-specific include directories. */ - no_standard_cplusplus_includes = 1; - else if (!strcmp (argv[i], "-noprecomp")) - no_precomp = 1; - break; - - case 'r': - if (!strcmp (argv[i], "-remap")) - remap = 1; - break; - - case 'u': - /* Sun compiler passes undocumented switch "-undef". - Let's assume it means to inhibit the predefined symbols. */ - inhibit_predefs = 1; - break; - - case '\0': /* JF handle '-' as file name meaning stdin or stdout */ - if (in_fname == NULL) { - in_fname = ""; - break; - } else if (out_fname == NULL) { - out_fname = ""; - break; - } /* else fall through into error */ - - default: - fatal ("Invalid option `%s'", argv[i]); - } - } - } - - /* Add dirs from CPATH after dirs from -I. */ - /* There seems to be confusion about what CPATH should do, - so for the moment it is not documented. */ - /* Some people say that CPATH should replace the standard include dirs, - but that seems pointless: it comes before them, so it overrides them - anyway. */ - GET_ENV_PATH_LIST (cp, "CPATH"); - if (cp && ! no_standard_includes) - path_include (cp); - - /* Initialize output buffer */ - - outbuf.buf = (U_CHAR *) xmalloc (OUTBUF_SIZE); - outbuf.bufp = outbuf.buf; - outbuf.length = OUTBUF_SIZE; - - /* Do partial setup of input buffer for the sake of generating - early #line directives (when -g is in effect). */ - - fp = &instack[++indepth]; - if (in_fname == NULL) - in_fname = ""; - fp->nominal_fname = fp->fname = in_fname; - fp->nominal_fname_len = strlen (in_fname); - fp->lineno = 0; - -/* CYGNUS LOCAL vmakarov */ -#ifndef NO_BUILTIN_WCHAR_TYPE -/* END CYGNUS LOCAL */ - /* In C++, wchar_t is a distinct basic type, and we can expect - __wchar_t to be defined by cc1plus. */ - if (cplusplus) - wchar_type = "__wchar_t"; -/* CYGNUS LOCAL vmakarov */ -#endif -/* END CYGNUS LOCAL */ - - /* Install __LINE__, etc. Must follow initialize_char_syntax - and option processing. */ - initialize_builtins (fp, &outbuf); - - /* Do standard #defines and assertions - that identify system and machine type. */ - - if (!inhibit_predefs) { - char *p = (char *) alloca (strlen (predefs) + 1); - - - strcpy (p, predefs); - while (*p) { - char *q; - while (*p == ' ' || *p == '\t') - p++; - /* Handle -D options. */ - if (p[0] == '-' && p[1] == 'D') { - q = &p[2]; - while (*p && *p != ' ' && *p != '\t') - p++; - if (*p != 0) - *p++= 0; - if (debug_output) - output_line_directive (fp, &outbuf, 0, same_file); - make_definition (q); - while (*p == ' ' || *p == '\t') - p++; - } else if (p[0] == '-' && p[1] == 'A') { - /* Handle -A options (assertions). */ - char *assertion; - char *past_name; - char *value; - char *past_value; - char *termination; - int save_char; - - assertion = &p[2]; - past_name = assertion; - /* Locate end of name. */ - while (*past_name && *past_name != ' ' - && *past_name != '\t' && *past_name != '(') - past_name++; - /* Locate `(' at start of value. */ - value = past_name; - while (*value && (*value == ' ' || *value == '\t')) - value++; - if (*value++ != '(') - abort (); - while (*value && (*value == ' ' || *value == '\t')) - value++; - past_value = value; - /* Locate end of value. */ - while (*past_value && *past_value != ' ' - && *past_value != '\t' && *past_value != ')') - past_value++; - termination = past_value; - while (*termination && (*termination == ' ' || *termination == '\t')) - termination++; - if (*termination++ != ')') - abort (); - if (*termination && *termination != ' ' && *termination != '\t') - abort (); - /* Temporarily null-terminate the value. */ - save_char = *termination; - *termination = '\0'; - /* Install the assertion. */ - make_assertion ("-A", assertion); - *termination = (char) save_char; - p = termination; - while (*p == ' ' || *p == '\t') - p++; - } else { - abort (); - } - } - } - - /* Now handle the command line options. */ - - /* Do -U's, -D's and -A's in the order they were seen. */ - for (i = 1; i < argc; i++) { - if (pend_undefs[i]) { - if (debug_output) - output_line_directive (fp, &outbuf, 0, same_file); - make_undef (pend_undefs[i], &outbuf); - } - if (pend_defs[i]) { - if (debug_output) - output_line_directive (fp, &outbuf, 0, same_file); - make_definition (pend_defs[i]); - } - if (pend_assertions[i]) - make_assertion (pend_assertion_options[i], pend_assertions[i]); - } - - done_initializing = 1; - - { /* Read the appropriate environment variable and if it exists - replace include_defaults with the listed path. */ - char *epath = 0; - switch ((objc << 1) + cplusplus) - { - case 0: - GET_ENV_PATH_LIST (epath, "C_INCLUDE_PATH"); - break; - case 1: - GET_ENV_PATH_LIST (epath, "CPLUS_INCLUDE_PATH"); - break; - case 2: - GET_ENV_PATH_LIST (epath, "OBJC_INCLUDE_PATH"); - break; - case 3: - GET_ENV_PATH_LIST (epath, "OBJCPLUS_INCLUDE_PATH"); - break; - } - /* If the environment var for this language is set, - add to the default list of include directories. */ - if (epath) { - int num_dirs; - char *startp, *endp; - - for (num_dirs = 1, startp = epath; *startp; startp++) - if (*startp == PATH_SEPARATOR) - num_dirs++; - include_defaults - = (struct default_include *) xmalloc ((num_dirs - * sizeof (struct default_include)) - + sizeof (include_defaults_array)); - startp = endp = epath; - num_dirs = 0; - while (1) { - char c = *endp++; - if (c == PATH_SEPARATOR || !c) { - endp[-1] = 0; - include_defaults[num_dirs].fname - = startp == endp ? "." : savestring (startp); - endp[-1] = c; - include_defaults[num_dirs].component = 0; - include_defaults[num_dirs].cplusplus = cplusplus; - include_defaults[num_dirs].cxx_aware = 1; - num_dirs++; - if (!c) - break; - startp = endp; - } - } - /* Put the usual defaults back in at the end. */ - bcopy ((char *) include_defaults_array, - (char *) &include_defaults[num_dirs], - sizeof (include_defaults_array)); - } - } - - append_include_chain (before_system, last_before_system); - first_system_include = before_system; - - /* Unless -fnostdinc, - tack on the standard include file dirs to the specified list */ - if (!no_standard_includes) { - struct default_include *p = include_defaults; - char *specd_prefix = include_prefix; - char *default_prefix = savestring (GCC_INCLUDE_DIR); - int default_len = 0; - /* Remove the `include' from /usr/local/lib/gcc.../include. */ - if (!strcmp (default_prefix + strlen (default_prefix) - 8, "/include")) { - default_len = strlen (default_prefix) - 7; - default_prefix[default_len] = 0; - } - /* Search "translated" versions of GNU directories. - These have /usr/local/lib/gcc... replaced by specd_prefix. */ - if (specd_prefix != 0 && default_len != 0) - for (p = include_defaults; p->fname; p++) { - /* Some standard dirs are only for C++. */ - if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) { - /* Does this dir start with the prefix? */ - if (!strncmp (p->fname, default_prefix, default_len)) { - /* Yes; change prefix and add to search list. */ - struct file_name_list *new - = new_include_prefix (NULL_PTR, NULL_PTR, specd_prefix, - p->fname + default_len); - if (new) { - new->c_system_include_path = !p->cxx_aware; - append_include_chain (new, new); - if (first_system_include == 0) - first_system_include = new; - } - } - } - } - /* Search ordinary names for GNU include directories. */ - for (p = include_defaults; p->fname; p++) { - /* Some standard dirs are only for C++. */ - if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) { - struct file_name_list *new - = new_include_prefix (NULL_PTR, p->component, "", p->fname); - if (new) { - new->c_system_include_path = !p->cxx_aware; - append_include_chain (new, new); - if (first_system_include == 0) - first_system_include = new; - } - } - } - } - - /* Tack the after_include chain at the end of the include chain. */ - append_include_chain (after_include, last_after_include); - if (first_system_include == 0) - first_system_include = after_include; - - /* With -v, print the list of dirs to search. */ - if (verbose) { - struct file_name_list *p; - fprintf (stderr, "#include \"...\" search starts here:\n"); - for (p = include; p; p = p->next) { - if (p == first_bracket_include) - fprintf (stderr, "#include <...> search starts here:\n"); - if (!p->fname[0]) - fprintf (stderr, " .\n"); - else if (!strcmp (p->fname, "/") || !strcmp (p->fname, "//")) - fprintf (stderr, " %s\n", p->fname); - else - /* Omit trailing '/'. */ - fprintf (stderr, " %.*s\n", (int) strlen (p->fname) - 1, p->fname); - } - fprintf (stderr, "End of search list.\n"); - } - - /* -MG doesn't select the form of output and must be specified with one of - -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't - inhibit compilation. */ - if (print_deps_missing_files && (print_deps == 0 || !inhibit_output)) - fatal ("-MG must be specified with one of -M or -MM"); - - /* Either of two environment variables can specify output of deps. - Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET", - where OUTPUT_FILE is the file to write deps info to - and DEPS_TARGET is the target to mention in the deps. */ - - if (print_deps == 0 - && (getenv ("SUNPRO_DEPENDENCIES") != 0 - || getenv ("DEPENDENCIES_OUTPUT") != 0)) { - char *spec = getenv ("DEPENDENCIES_OUTPUT"); - char *s; - char *output_file; - - if (spec == 0) { - spec = getenv ("SUNPRO_DEPENDENCIES"); - print_deps = 2; - } - else - print_deps = 1; - - s = spec; - /* Find the space before the DEPS_TARGET, if there is one. */ - /* This should use index. (mrs) */ - while (*s != 0 && *s != ' ') s++; - if (*s != 0) { - deps_target = s + 1; - output_file = xmalloc (s - spec + 1); - bcopy (spec, output_file, s - spec); - output_file[s - spec] = 0; - } - else { - deps_target = 0; - output_file = spec; - } - - deps_file = output_file; - deps_mode = "a"; - } - - /* For -M, print the expected object file name - as the target of this Make-rule. */ - if (print_deps) { - deps_allocated_size = 200; - deps_buffer = xmalloc (deps_allocated_size); - deps_buffer[0] = 0; - deps_size = 0; - deps_column = 0; - - if (deps_target) { - deps_output (deps_target, ':'); - } else if (*in_fname == 0) { - deps_output ("-", ':'); - } else { - char *p, *q; - int len; - - q = base_name (in_fname); - - /* Copy remainder to mungable area. */ - p = (char *) alloca (strlen(q) + 8); - strcpy (p, q); - - /* Output P, but remove known suffixes. */ - len = strlen (p); - q = p + len; - if (len >= 2 - && p[len - 2] == '.' - && index("cCsSm", p[len - 1])) - q = p + (len - 2); - else if (len >= 3 - && p[len - 3] == '.' - && p[len - 2] == 'c' - && p[len - 1] == 'c') - q = p + (len - 3); - else if (len >= 4 - && p[len - 4] == '.' - && p[len - 3] == 'c' - && p[len - 2] == 'x' - && p[len - 1] == 'x') - q = p + (len - 4); - else if (len >= 4 - && p[len - 4] == '.' - && p[len - 3] == 'c' - && p[len - 2] == 'p' - && p[len - 1] == 'p') - q = p + (len - 4); - - /* Supply our own suffix. */ - strcpy (q, OBJECT_SUFFIX); - - deps_output (p, ':'); - deps_output (in_fname, ' '); - } - } - - /* Scan the -imacros files before the main input. - Much like #including them, but with no_output set - so that only their macro definitions matter. */ - - no_output++; no_record_file++; - for (i = 1; i < argc; i++) - if (pend_files[i]) { - struct include_file *inc; - int fd = open_include_file (pend_files[i], NULL_PTR, NULL_PTR, &inc); - if (fd < 0) { - perror_with_name (pend_files[i]); - return FATAL_EXIT_CODE; - } - finclude (fd, inc, &outbuf, 0, NULL_PTR); - } - no_output--; no_record_file--; - - /* Copy the entire contents of the main input file into - the stacked input buffer previously allocated for it. */ - - /* JF check for stdin */ - if (in_fname == NULL || *in_fname == 0) { - in_fname = ""; - f = 0; - } else if ((f = open (in_fname, O_RDONLY, 0666)) < 0) - goto perror; - - if (fstat (f, &st) != 0) - pfatal_with_name (in_fname); - fp->nominal_fname = fp->fname = in_fname; - fp->nominal_fname_len = strlen (in_fname); - fp->lineno = 1; - fp->system_header_p = 0; - /* JF all this is mine about reading pipes and ttys */ - if (! S_ISREG (st.st_mode)) { - /* Read input from a file that is not a normal disk file. - We cannot preallocate a buffer with the correct size, - so we must read in the file a piece at the time and make it bigger. */ - int size; - int bsize; - int cnt; - - if (S_ISDIR (st.st_mode)) - fatal ("Input file `%s' is a directory", in_fname); - - bsize = 2000; - size = 0; - fp->buf = (U_CHAR *) xmalloc (bsize + 2); - for (;;) { - cnt = safe_read (f, (char *) fp->buf + size, bsize - size); - if (cnt < 0) goto perror; /* error! */ - size += cnt; - if (size != bsize) break; /* End of file */ - bsize *= 2; - fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2); - } - fp->length = size; - } else { - /* Read a file whose size we can determine in advance. - For the sake of VMS, st.st_size is just an upper bound. */ - size_t s = (size_t) st.st_size; - if (s != st.st_size || s + 2 < s) - memory_full (); - fp->buf = (U_CHAR *) xmalloc (s + 2); - fp->length = safe_read (f, (char *) fp->buf, s); - if (fp->length < 0) goto perror; - } - fp->bufp = fp->buf; - fp->if_stack = if_stack; - - /* Make sure data ends with a newline. And put a null after it. */ - - if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n') - /* Backslash-newline at end is not good enough. */ - || (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) { - fp->buf[fp->length++] = '\n'; - missing_newline = 1; - } - fp->buf[fp->length] = '\0'; - - /* Unless inhibited, convert trigraphs in the input. */ - - if (!no_trigraphs) - trigraph_pcp (fp); - - /* Now that we know the input file is valid, open the output. */ - - if (!out_fname || !strcmp (out_fname, "")) - out_fname = "stdout"; - else if (! freopen (out_fname, "w", stdout)) - pfatal_with_name (out_fname); - - output_line_directive (fp, &outbuf, 0, same_file); - - /* Scan the -include files before the main input. */ - - no_record_file++; - for (i = 1; i < argc; i++) - if (pend_includes[i]) { - struct include_file *inc; - int fd = open_include_file (pend_includes[i], NULL_PTR, NULL_PTR, &inc); - if (fd < 0) { - perror_with_name (pend_includes[i]); - return FATAL_EXIT_CODE; - } - finclude (fd, inc, &outbuf, 0, NULL_PTR); - } - no_record_file--; - - /* Scan the input, processing macros and directives. */ - - rescan (&outbuf, 0); - - if (missing_newline) - fp->lineno--; - - if (pedantic && missing_newline) - pedwarn ("file does not end in newline"); - - /* Now we have processed the entire input - Write whichever kind of output has been requested. */ - - if (dump_macros == dump_only) - dump_all_macros (); - else if (! inhibit_output) { - write_output (); - } - - if (print_deps) { - /* Don't actually write the deps file if compilation has failed. */ - if (errors == 0) { - if (deps_file && ! (deps_stream = fopen (deps_file, deps_mode))) - pfatal_with_name (deps_file); - fputs (deps_buffer, deps_stream); - putc ('\n', deps_stream); - if (deps_file) { - if (ferror (deps_stream) || fclose (deps_stream) != 0) - fatal ("I/O error on output"); - } - } - } - - if (pcp_outfile && pcp_outfile != stdout - && (ferror (pcp_outfile) || fclose (pcp_outfile) != 0)) - fatal ("I/O error on `-pcp' output"); - - if (ferror (stdout) || fclose (stdout) != 0) - fatal ("I/O error on output"); - - if (errors) - exit (FATAL_EXIT_CODE); - exit (SUCCESS_EXIT_CODE); - - perror: - pfatal_with_name (in_fname); - return 0; -} - -/* Given a colon-separated list of file names PATH, - add all the names to the search path for include files. */ - -static void -path_include (path) - char *path; -{ - char *p; - - p = path; - - if (*p) - while (1) { - char *q = p; - char c; - struct file_name_list *dirtmp; - - /* Find the end of this name. */ - while ((c = *q++) != PATH_SEPARATOR && c) - continue; - - q[-1] = 0; - dirtmp = new_include_prefix (last_include, NULL_PTR, - "", p == q ? "." : p); - q[-1] = c; - append_include_chain (dirtmp, dirtmp); - - /* Advance past this name. */ - p = q; - if (! c) - break; - } -} - -/* Return the address of the first character in S that equals C. - S is an array of length N, possibly containing '\0's, and followed by '\0'. - Return 0 if there is no such character. Assume that C itself is not '\0'. - If we knew we could use memchr, we could just invoke memchr (S, C, N), - but unfortunately memchr isn't autoconfigured yet. */ - -static U_CHAR * -index0 (s, c, n) - U_CHAR *s; - int c; - size_t n; -{ - char *p = (char *) s; - for (;;) { - char *q = index (p, c); - if (q) - return (U_CHAR *) q; - else { - size_t l = strlen (p); - if (l == n) - return 0; - l++; - p += l; - n -= l; - } - } -} - -/* Pre-C-Preprocessor to translate ANSI trigraph idiocy in BUF - before main CCCP processing. Name `pcp' is also in honor of the - drugs the trigraph designers must have been on. - - Using an extra pass through the buffer takes a little extra time, - but is infinitely less hairy than trying to handle trigraphs inside - strings, etc. everywhere, and also makes sure that trigraphs are - only translated in the top level of processing. */ - -static void -trigraph_pcp (buf) - FILE_BUF *buf; -{ - register U_CHAR c, *fptr, *bptr, *sptr, *lptr; - int len; - - fptr = bptr = sptr = buf->buf; - lptr = fptr + buf->length; - while ((sptr = index0 (sptr, '?', (size_t) (lptr - sptr))) != NULL) { - if (*++sptr != '?') - continue; - switch (*++sptr) { - case '=': - c = '#'; - break; - case '(': - c = '['; - break; - case '/': - c = '\\'; - break; - case ')': - c = ']'; - break; - case '\'': - c = '^'; - break; - case '<': - c = '{'; - break; - case '!': - c = '|'; - break; - case '>': - c = '}'; - break; - case '-': - c = '~'; - break; - case '?': - sptr--; - continue; - default: - continue; - } - len = sptr - fptr - 2; - - /* BSD doc says bcopy () works right for overlapping strings. In ANSI - C, this will be memmove (). */ - if (bptr != fptr && len > 0) - bcopy ((char *) fptr, (char *) bptr, len); - - bptr += len; - *bptr++ = c; - fptr = ++sptr; - } - len = buf->length - (fptr - buf->buf); - if (bptr != fptr && len > 0) - bcopy ((char *) fptr, (char *) bptr, len); - buf->length -= fptr - bptr; - buf->buf[buf->length] = '\0'; - if (warn_trigraphs && fptr != bptr) - warning_with_line (0, "%lu trigraph(s) encountered", - (unsigned long) (fptr - bptr) / 2); -} - -/* Move all backslash-newline pairs out of embarrassing places. - Exchange all such pairs following BP - with any potentially-embarrassing characters that follow them. - Potentially-embarrassing characters are / and * - (because a backslash-newline inside a comment delimiter - would cause it not to be recognized). */ - -static void -newline_fix (bp) - U_CHAR *bp; -{ - register U_CHAR *p = bp; - - /* First count the backslash-newline pairs here. */ - - while (p[0] == '\\' && p[1] == '\n') - p += 2; - - /* What follows the backslash-newlines is not embarrassing. */ - - if (*p != '/' && *p != '*') - return; - - /* Copy all potentially embarrassing characters - that follow the backslash-newline pairs - down to where the pairs originally started. */ - - while (*p == '*' || *p == '/') - *bp++ = *p++; - - /* Now write the same number of pairs after the embarrassing chars. */ - while (bp < p) { - *bp++ = '\\'; - *bp++ = '\n'; - } -} - -/* Like newline_fix but for use within a directive-name. - Move any backslash-newlines up past any following symbol constituents. */ - -static void -name_newline_fix (bp) - U_CHAR *bp; -{ - register U_CHAR *p = bp; - - /* First count the backslash-newline pairs here. */ - while (p[0] == '\\' && p[1] == '\n') - p += 2; - - /* What follows the backslash-newlines is not embarrassing. */ - - if (!is_idchar[*p]) - return; - - /* Copy all potentially embarrassing characters - that follow the backslash-newline pairs - down to where the pairs originally started. */ - - while (is_idchar[*p]) - *bp++ = *p++; - - /* Now write the same number of pairs after the embarrassing chars. */ - while (bp < p) { - *bp++ = '\\'; - *bp++ = '\n'; - } -} - -/* Look for lint commands in comments. - - When we come in here, ibp points into a comment. Limit is as one expects. - scan within the comment -- it should start, after lwsp, with a lint command. - If so that command is returned as a (constant) string. - - Upon return, any arg will be pointed to with argstart and will be - arglen long. Note that we don't parse that arg since it will just - be printed out again. */ - -static char * -get_lintcmd (ibp, limit, argstart, arglen, cmdlen) - register U_CHAR *ibp; - register U_CHAR *limit; - U_CHAR **argstart; /* point to command arg */ - int *arglen, *cmdlen; /* how long they are */ -{ - HOST_WIDE_INT linsize; - register U_CHAR *numptr; /* temp for arg parsing */ - - *arglen = 0; - - SKIP_WHITE_SPACE (ibp); - - if (ibp >= limit) return NULL; - - linsize = limit - ibp; - - /* Oh, I wish C had lexical functions... hell, I'll just open-code the set */ - if ((linsize >= 10) && !bcmp (ibp, "NOTREACHED", 10)) { - *cmdlen = 10; - return "NOTREACHED"; - } - if ((linsize >= 8) && !bcmp (ibp, "ARGSUSED", 8)) { - *cmdlen = 8; - return "ARGSUSED"; - } - if ((linsize >= 11) && !bcmp (ibp, "LINTLIBRARY", 11)) { - *cmdlen = 11; - return "LINTLIBRARY"; - } - if ((linsize >= 7) && !bcmp (ibp, "VARARGS", 7)) { - *cmdlen = 7; - ibp += 7; linsize -= 7; - if ((linsize == 0) || ! ISDIGIT (*ibp)) return "VARARGS"; - - /* OK, read a number */ - for (numptr = *argstart = ibp; (numptr < limit) && ISDIGIT (*numptr); - numptr++); - *arglen = numptr - *argstart; - return "VARARGS"; - } - return NULL; -} - -/* - * The main loop of the program. - * - * Read characters from the input stack, transferring them to the - * output buffer OP. - * - * Macros are expanded and push levels on the input stack. - * At the end of such a level it is popped off and we keep reading. - * At the end of any other kind of level, we return. - * #-directives are handled, except within macros. - * - * If OUTPUT_MARKS is nonzero, keep Newline markers found in the input - * and insert them when appropriate. This is set while scanning macro - * arguments before substitution. It is zero when scanning for final output. - * There are three types of Newline markers: - * * Newline - follows a macro name that was not expanded - * because it appeared inside an expansion of the same macro. - * This marker prevents future expansion of that identifier. - * When the input is rescanned into the final output, these are deleted. - * These are also deleted by ## concatenation. - * * Newline Space (or Newline and any other whitespace character) - * stands for a place that tokens must be separated or whitespace - * is otherwise desirable, but where the ANSI standard specifies there - * is no whitespace. This marker turns into a Space (or whichever other - * whitespace char appears in the marker) in the final output, - * but it turns into nothing in an argument that is stringified with #. - * Such stringified arguments are the only place where the ANSI standard - * specifies with precision that whitespace may not appear. - * - * During this function, IP->bufp is kept cached in IBP for speed of access. - * Likewise, OP->bufp is kept in OBP. Before calling a subroutine - * IBP, IP and OBP must be copied back to memory. IP and IBP are - * copied back with the RECACHE macro. OBP must be copied back from OP->bufp - * explicitly, and before RECACHE, since RECACHE uses OBP. - */ - -static void -rescan (op, output_marks) - FILE_BUF *op; - int output_marks; -{ - /* Character being scanned in main loop. */ - register U_CHAR c; - - /* Length of pending accumulated identifier. */ - register int ident_length = 0; - - /* Hash code of pending accumulated identifier. */ - register int hash = 0; - - /* Current input level (&instack[indepth]). */ - FILE_BUF *ip; - - /* Pointer for scanning input. */ - register U_CHAR *ibp; - - /* Pointer to end of input. End of scan is controlled by LIMIT. */ - register U_CHAR *limit; - - /* Pointer for storing output. */ - register U_CHAR *obp; - - /* REDO_CHAR is nonzero if we are processing an identifier - after backing up over the terminating character. - Sometimes we process an identifier without backing up over - the terminating character, if the terminating character - is not special. Backing up is done so that the terminating character - will be dispatched on again once the identifier is dealt with. */ - int redo_char = 0; - - /* 1 if within an identifier inside of which a concatenation - marker (Newline -) has been seen. */ - int concatenated = 0; - - /* While scanning a comment or a string constant, - this records the line it started on, for error messages. */ - int start_line; - - /* Record position of last `real' newline. */ - U_CHAR *beg_of_line; - -/* Pop the innermost input stack level, assuming it is a macro expansion. */ - -#define POPMACRO \ -do { ip->macro->type = T_MACRO; \ - if (ip->free_ptr) free (ip->free_ptr); \ - --indepth; } while (0) - -/* Reload `rescan's local variables that describe the current - level of the input stack. */ - -#define RECACHE \ -do { ip = &instack[indepth]; \ - ibp = ip->bufp; \ - limit = ip->buf + ip->length; \ - op->bufp = obp; \ - check_expand (op, limit - ibp); \ - beg_of_line = 0; \ - obp = op->bufp; } while (0) - - if (no_output && instack[indepth].fname != 0) - skip_if_group (&instack[indepth], 1, NULL); - - obp = op->bufp; - RECACHE; - - beg_of_line = ibp; - - /* Our caller must always put a null after the end of - the input at each input stack level. */ - if (*limit != 0) - abort (); - - while (1) { - c = *ibp++; - *obp++ = c; - - switch (c) { - case '\\': - if (*ibp == '\n' && !ip->macro) { - /* At the top level, always merge lines ending with backslash-newline, - even in middle of identifier. But do not merge lines in a macro, - since backslash might be followed by a newline-space marker. */ - ++ibp; - ++ip->lineno; - --obp; /* remove backslash from obuf */ - break; - } - /* If ANSI, backslash is just another character outside a string. */ - if (!traditional) - goto randomchar; - /* Otherwise, backslash suppresses specialness of following char, - so copy it here to prevent the switch from seeing it. - But first get any pending identifier processed. */ - if (ident_length > 0) - goto specialchar; - if (ibp < limit) - *obp++ = *ibp++; - break; - - case '%': - if (ident_length || ip->macro || traditional) - goto randomchar; - while (*ibp == '\\' && ibp[1] == '\n') { - ibp += 2; - ++ip->lineno; - } - if (*ibp != ':') - break; - /* Treat this %: digraph as if it were #. */ - /* Fall through. */ - - case '#': - if (assertions_flag) { - if (ident_length) - goto specialchar; - /* Copy #foo (bar lose) without macro expansion. */ - obp[-1] = '#'; /* In case it was '%'. */ - SKIP_WHITE_SPACE (ibp); - while (is_idchar[*ibp]) - *obp++ = *ibp++; - SKIP_WHITE_SPACE (ibp); - if (*ibp == '(') { - ip->bufp = ibp; - skip_paren_group (ip); - bcopy ((char *) ibp, (char *) obp, ip->bufp - ibp); - obp += ip->bufp - ibp; - ibp = ip->bufp; - } - break; - } - - /* If this is expanding a macro definition, don't recognize - preprocessing directives. */ - if (ip->macro != 0) - goto randomchar; - /* If this is expand_into_temp_buffer, - don't recognize them either. Warn about them - only after an actual newline at this level, - not at the beginning of the input level. */ - if (! ip->fname) { - if (ip->buf != beg_of_line) - warning ("preprocessing directive not recognized within macro arg"); - goto randomchar; - } - if (ident_length) - goto specialchar; - - - /* # keyword: a # must be first nonblank char on the line */ - if (beg_of_line == 0) - goto randomchar; - { - U_CHAR *bp; - - /* Scan from start of line, skipping whitespace, comments - and backslash-newlines, and see if we reach this #. - If not, this # is not special. */ - bp = beg_of_line; - /* If -traditional, require # to be at beginning of line. */ - if (!traditional) { - while (1) { - if (is_hor_space[*bp]) - bp++; - else if (*bp == '\\' && bp[1] == '\n') - bp += 2; - else if (*bp == '/' && bp[1] == '*') { - bp += 2; - while (1) - { - if (*bp == '*') - { - if (bp[1] == '/') - { - bp += 2; - break; - } - } - else - { -#ifdef MULTIBYTE_CHARS - /* CYGNUS LOCAL chill */ - if (! chill) - /* END CYGNUS LOCAL chill */ - { - int length; - length = local_mblen (bp, limit - bp); - if (length > 1) - bp += (length - 1); - } -#endif - } - bp++; - } - } - /* There is no point in trying to deal with C++ // comments here, - because if there is one, then this # must be part of the - comment and we would never reach here. */ - else break; - } - if (c == '%') { - if (bp[0] != '%') - break; - while (bp[1] == '\\' && bp[2] == '\n') - bp += 2; - if (bp + 1 != ibp) - break; - /* %: appears at start of line; skip past the ':' too. */ - bp++; - ibp++; - } - } - if (bp + 1 != ibp) - goto randomchar; - } - - /* This # can start a directive. */ - - --obp; /* Don't copy the '#' */ - - ip->bufp = ibp; - op->bufp = obp; - if (! handle_directive (ip, op)) { -#ifdef USE_C_ALLOCA - alloca (0); -#endif - /* Not a known directive: treat it as ordinary text. - IP, OP, IBP, etc. have not been changed. */ - if (no_output && instack[indepth].fname) { - /* If not generating expanded output, - what we do with ordinary text is skip it. - Discard everything until next # directive. */ - skip_if_group (&instack[indepth], 1, 0); - RECACHE; - beg_of_line = ibp; - break; - } - *obp++ = '#'; /* Copy # (even if it was originally %:). */ - /* Don't expand an identifier that could be a macro directive. - (Section 3.8.3 of the ANSI C standard) */ - SKIP_WHITE_SPACE (ibp); - if (is_idstart[*ibp]) - { - *obp++ = *ibp++; - while (is_idchar[*ibp]) - *obp++ = *ibp++; - } - goto randomchar; - } -#ifdef USE_C_ALLOCA - alloca (0); -#endif - /* A # directive has been successfully processed. */ - /* If not generating expanded output, ignore everything until - next # directive. */ - if (no_output && instack[indepth].fname) - skip_if_group (&instack[indepth], 1, 0); - obp = op->bufp; - RECACHE; - beg_of_line = ibp; - break; - - case '\"': /* skip quoted string */ - case '\'': - /* A single quoted string is treated like a double -- some - programs (e.g., troff) are perverse this way */ - - /* Handle any pending identifier; - but the L in L'...' or L"..." is not an identifier. */ - if (ident_length) { - if (! (ident_length == 1 && hash == HASHSTEP (0, 'L'))) - goto specialchar; - ident_length = hash = 0; - } - - start_line = ip->lineno; - - /* Skip ahead to a matching quote. */ - - while (1) { - if (ibp >= limit) { - if (ip->macro != 0) { - /* try harder: this string crosses a macro expansion boundary. - This can happen naturally if -traditional. - Otherwise, only -D can make a macro with an unmatched quote. */ - POPMACRO; - RECACHE; - continue; - } - if (!traditional) { - error_with_line (line_for_error (start_line), - "unterminated string or character constant"); - if (multiline_string_line) { - error_with_line (multiline_string_line, - "possible real start of unterminated constant"); - multiline_string_line = 0; - } - } - break; - } - *obp++ = *ibp; - switch (*ibp++) { - case '\n': - ++ip->lineno; - ++op->lineno; - /* Traditionally, end of line ends a string constant with no error. - So exit the loop and record the new line. */ - if (traditional) { - beg_of_line = ibp; - goto while2end; - } - if (c == '\'') { - error_with_line (line_for_error (start_line), - "unterminated character constant"); - goto while2end; - } - if (multiline_string_line == 0) { - if (pedantic) - pedwarn_with_line (line_for_error (start_line), - "string constant runs past end of line"); - multiline_string_line = ip->lineno - 1; - } - break; - - case '\\': -/* CYGNUS LOCAL chill */ - if (chill) - break; -/* END CYGNUS LOCAL chill */ - if (*ibp == '\n') { - /* Backslash newline is replaced by nothing at all, but - keep the line counts correct. But if we are reading - from a macro, keep the backslash newline, since backslash - newlines have already been processed. */ - if (ip->macro) - *obp++ = '\n'; - else - --obp; - ++ibp; - ++ip->lineno; - } else { - /* ANSI stupidly requires that in \\ the second \ - is *not* prevented from combining with a newline. */ - if (!ip->macro) { - while (*ibp == '\\' && ibp[1] == '\n') { - ibp += 2; - ++ip->lineno; - } - } - *obp++ = *ibp++; - } - break; - - case '\"': - case '\'': - if (ibp[-1] == c) - goto while2end; - break; -/* CYGNUS LOCAL chill */ - case '^': - if (chill) - { - /* skip a control sequence in chill. This looks like - ^([b | B | d | D | h | H | o | O']digits) | ^^ */ - if (*ibp == '^') - { - *obp++=*ibp++; - break; - } - if (*ibp == '(') - { - /* skip till closing paran or eol */ - while (*ibp) - { - *obp++ = *ibp++; - if (*ibp == ')') - break; - if (*ibp == '\n' || *ibp == 0) - goto while2end; - } - } - } - break; -/* END CYGNUS LOCAL chill */ -#ifdef MULTIBYTE_CHARS - default: -/* CYGNUS LOCAL chill */ - if (! chill) -/* END CYGNUS LOCAL chill */ - { - int length; - --ibp; - length = local_mblen (ibp, limit - ibp); - if (length > 0) - { - --obp; - bcopy (ibp, obp, length); - obp += length; - ibp += length; - } - else - ++ibp; - } - break; -#endif - } - } - while2end: - break; - -/* CYGNUS LOCAL chill */ - case '-': - if (*ibp == '\\' && ibp[1] == '\n') - newline_fix (ibp); - - if (!(chill && *ibp == '-')) - goto randomchar; - if (ip->macro != 0) - goto randomchar; - if (ident_length) - goto specialchar; - - if (*ibp == '-') { - /* CHILL style comment... */ - start_line = ip->lineno; - - --ibp; /* Back over the dash */ - --obp; - - /* Comments are equivalent to spaces. */ - if (! put_out_comments) - *obp++ = ' '; - else { - /* must fake up a comment here */ - *obp++ = '-'; - *obp++ = '-'; - } - { - U_CHAR *before_bp = ibp+2; - - while (ibp < limit) { - if (*ibp++ == '\n') { - ibp--; - if (put_out_comments) { - bcopy (before_bp, obp, ibp - before_bp); - obp += ibp - before_bp; - } - break; - } - } - break; - } - } - break; -/* END CYGNUS LOCAL chill */ - - case '/': - if (ip->macro != 0) - goto randomchar; - if (*ibp == '\\' && ibp[1] == '\n') - newline_fix (ibp); - if (*ibp != '*' - && !(cplusplus_comments && *ibp == '/')) - goto randomchar; - if (ident_length) - goto specialchar; - - if (*ibp == '/') { - /* C++ style comment... */ - start_line = ip->lineno; - - /* Comments are equivalent to spaces. */ - if (! put_out_comments) - obp[-1] = ' '; - - { - U_CHAR *before_bp = ibp; - - while (++ibp < limit) { - if (*ibp == '\n') - { - if (put_out_comments) { - bcopy ((char *) before_bp, (char *) obp, ibp - before_bp); - obp += ibp - before_bp; - } - break; - } - if (*ibp == '\\') - { - if (ibp + 1 < limit && ibp[1] == '\n') - { - if (warn_comments) - warning ("multiline `//' comment"); - ++ip->lineno; - /* Copy the newline into the output buffer, in order to - avoid the pain of a #line every time a multiline comment - is seen. */ - if (!put_out_comments) - *obp++ = '\n'; - ++op->lineno; - ++ibp; - } - } - else - { -#ifdef MULTIBYTE_CHARS - /* CYGNUS LOCAL chill */ - if (! chill) - /* END CYGNUS LOCAL chill */ - { - int length; - length = local_mblen (ibp, limit - ibp); - if (length > 1) - ibp += (length - 1); - } -#endif - } - } - break; - } - } - - /* Ordinary C comment. Skip it, optionally copying it to output. */ - - start_line = ip->lineno; - - ++ibp; /* Skip the star. */ - - /* If this cpp is for lint, we peek inside the comments: */ - if (for_lint) { - U_CHAR *argbp; - int cmdlen, arglen; - char *lintcmd = get_lintcmd (ibp, limit, &argbp, &arglen, &cmdlen); - - if (lintcmd != NULL) { - op->bufp = obp; - check_expand (op, cmdlen + arglen + 14); - obp = op->bufp; - /* I believe it is always safe to emit this newline: */ - obp[-1] = '\n'; - bcopy ("#pragma lint ", (char *) obp, 13); - obp += 13; - bcopy (lintcmd, (char *) obp, cmdlen); - obp += cmdlen; - - if (arglen != 0) { - *(obp++) = ' '; - bcopy (argbp, (char *) obp, arglen); - obp += arglen; - } - - /* OK, now bring us back to the state we were in before we entered - this branch. We need #line because the #pragma's newline always - messes up the line count. */ - op->bufp = obp; - output_line_directive (ip, op, 0, same_file); - check_expand (op, limit - ibp + 2); - obp = op->bufp; - *(obp++) = '/'; - } - } - - /* Comments are equivalent to spaces. - Note that we already output the slash; we might not want it. - For -traditional, a comment is equivalent to nothing. */ - if (! put_out_comments) { - if (traditional) - obp--; - else - obp[-1] = ' '; - } - else - *obp++ = '*'; - - { - U_CHAR *before_bp = ibp; - - for (;;) { - switch (*ibp++) { - case '*': - if (ibp[-2] == '/' && warn_comments) - warning ("`/*' within comment"); - if (*ibp == '\\' && ibp[1] == '\n') - newline_fix (ibp); - if (*ibp == '/') - goto comment_end; - break; - - case '\n': - ++ip->lineno; - /* Copy the newline into the output buffer, in order to - avoid the pain of a #line every time a multiline comment - is seen. */ - if (!put_out_comments) - *obp++ = '\n'; - ++op->lineno; - break; - - case 0: - if (limit < ibp) { - error_with_line (line_for_error (start_line), - "unterminated comment"); - goto limit_reached; - } - break; -#ifdef MULTIBYTE_CHARS - default: - /* CYGNUS LOCAL chill */ - if (! chill) - /* END CYGNUS LOCAL chill */ - { - int length; - length = local_mblen (ibp, limit - ibp); - if (length > 1) - ibp += (length - 1); - } - break; -#endif - } - } - comment_end: - - ibp++; - if (put_out_comments) { - bcopy ((char *) before_bp, (char *) obp, ibp - before_bp); - obp += ibp - before_bp; - } - } - break; - - case '$': - if (! is_idchar['$']) - goto randomchar; - if (pedantic) - pedwarn ("`$' in identifier"); - goto letter; - - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': - /* If digit is not part of identifier, it starts a number, - which means that following letters are not an identifier. - "0x5" does not refer to an identifier "x5". - So copy all alphanumerics that follow without accumulating - as an identifier. Periods also, for sake of "3.e7". */ - - if (ident_length == 0) { - for (;;) { - if (!ip->macro) { - while (ibp[0] == '\\' && ibp[1] == '\n') { - ++ip->lineno; - ibp += 2; - } - } - c = *ibp++; - if (!is_idchar[c] && c != '.') { - --ibp; - break; - } - *obp++ = c; - /* A sign can be part of a preprocessing number - if it follows an `e' or `p'. */ - if (c == 'e' || c == 'E' || c == 'p' || c == 'P') { - if (!ip->macro) { - while (ibp[0] == '\\' && ibp[1] == '\n') { - ++ip->lineno; - ibp += 2; - } - } - if (*ibp == '+' || *ibp == '-') { - *obp++ = *ibp++; - /* But traditional C does not let the token go past the sign, - and C89 does not allow `p'. */ - if (traditional || (c89 && (c == 'p' || c == 'P'))) - break; - } - } - } - break; - } - /* fall through */ - - case '_': - case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': - case 'g': case 'h': case 'i': case 'j': case 'k': case 'l': - case 'm': case 'n': case 'o': case 'p': case 'q': case 'r': - case 's': case 't': case 'u': case 'v': case 'w': case 'x': - case 'y': case 'z': - case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': - case 'G': case 'H': case 'I': case 'J': case 'K': case 'L': - case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R': - case 'S': case 'T': case 'U': case 'V': case 'W': case 'X': - case 'Y': case 'Z': -/* CYGNUS LOCAL chill */ - if (chill && *ibp == '\'' && - (c == 'd' || c == 'D' || c == 'o' || c == 'O' || - c == 'h' || c == 'H' || c == 'b' || c == 'B')) - { - /* here we skip till end of literal. The reason is, that this - literal may not be terminated by another "'", and therefor - no macro evaluation is done till end of line */ - /* put the "'" */ - *obp++ = *ibp++; - while (*ibp == '_' || (*ibp >= '0' && *ibp <= '9') || - (*ibp >= 'A' && *ibp <= 'F') || (*ibp >= 'a' && *ibp <= 'f')) - *obp++ = *ibp++; - - /* if we have another "'" at the end, put this to obp and - continue */ - if (*ibp == '\'') - *obp++ = *ibp++; - break; - } - /* fall through */ -/* END CYGNUS LOCAL chill */ - letter: - ident_length++; - /* Compute step of hash function, to avoid a proc call on every token */ - hash = HASHSTEP (hash, c); - break; - - case '\n': - if (ip->fname == 0 && *ibp == '-') { - /* Newline - inhibits expansion of preceding token. - If expanding a macro arg, we keep the newline -. - In final output, it is deleted. - We recognize Newline - in macro bodies and macro args. */ - if (! concatenated) { - ident_length = 0; - hash = 0; - } - ibp++; - if (!output_marks) { - obp--; - } else { - /* If expanding a macro arg, keep the newline -. */ - *obp++ = '-'; - } - break; - } - - /* If reprocessing a macro expansion, newline is a special marker. */ - else if (ip->macro != 0) { - /* Newline White is a "funny space" to separate tokens that are - supposed to be separate but without space between. - Here White means any whitespace character. - Newline - marks a recursive macro use that is not - supposed to be expandable. */ - - if (is_space[*ibp]) { - /* Newline Space does not prevent expansion of preceding token - so expand the preceding token and then come back. */ - if (ident_length > 0) - goto specialchar; - - /* If generating final output, newline space makes a space. */ - if (!output_marks) { - obp[-1] = *ibp++; - /* And Newline Newline makes a newline, so count it. */ - if (obp[-1] == '\n') - op->lineno++; - } else { - /* If expanding a macro arg, keep the newline space. - If the arg gets stringified, newline space makes nothing. */ - *obp++ = *ibp++; - } - } else abort (); /* Newline followed by something random? */ - break; - } - - /* If there is a pending identifier, handle it and come back here. */ - if (ident_length > 0) - goto specialchar; - - beg_of_line = ibp; - - /* Update the line counts and output a #line if necessary. */ - ++ip->lineno; - ++op->lineno; - if (ip->lineno != op->lineno) { - op->bufp = obp; - output_line_directive (ip, op, 1, same_file); - check_expand (op, limit - ibp); - obp = op->bufp; - } - break; - - /* Come here either after (1) a null character that is part of the input - or (2) at the end of the input, because there is a null there. */ - case 0: - if (ibp <= limit) - /* Our input really contains a null character. */ - goto randomchar; - - limit_reached: - /* At end of a macro-expansion level, pop it and read next level. */ - if (ip->macro != 0) { - obp--; - ibp--; - /* If traditional, and we have an identifier that ends here, - process it now, so we get the right error for recursion. */ - if (traditional && ident_length - && ! is_idchar[*instack[indepth - 1].bufp]) { - redo_char = 1; - goto randomchar; - } - POPMACRO; - RECACHE; - break; - } - - /* If we don't have a pending identifier, - return at end of input. */ - if (ident_length == 0) { - obp--; - ibp--; - op->bufp = obp; - ip->bufp = ibp; - goto ending; - } - - /* If we do have a pending identifier, just consider this null - a special character and arrange to dispatch on it again. - The second time, IDENT_LENGTH will be zero so we will return. */ - - /* Fall through */ - -specialchar: - - /* Handle the case of a character such as /, ', " or null - seen following an identifier. Back over it so that - after the identifier is processed the special char - will be dispatched on again. */ - - ibp--; - obp--; - redo_char = 1; - - default: - -randomchar: - - if (ident_length > 0) { - register HASHNODE *hp; - - /* We have just seen an identifier end. If it's a macro, expand it. - - IDENT_LENGTH is the length of the identifier - and HASH is its hash code. - - The identifier has already been copied to the output, - so if it is a macro we must remove it. - - If REDO_CHAR is 0, the char that terminated the identifier - has been skipped in the output and the input. - OBP-IDENT_LENGTH-1 points to the identifier. - If the identifier is a macro, we must back over the terminator. - - If REDO_CHAR is 1, the terminating char has already been - backed over. OBP-IDENT_LENGTH points to the identifier. */ - - if (!pcp_outfile || pcp_inside_if) { - for (hp = hashtab[MAKE_POS (hash) % HASHSIZE]; hp != NULL; - hp = hp->next) { - - if (hp->length == ident_length) { - int obufp_before_macroname; - int op_lineno_before_macroname; - register int i = ident_length; - register U_CHAR *p = hp->name; - register U_CHAR *q = obp - i; - int disabled; - - if (! redo_char) - q--; - - do { /* All this to avoid a strncmp () */ - if (*p++ != *q++) - goto hashcollision; - } while (--i); - - /* We found a use of a macro name. - see if the context shows it is a macro call. */ - - /* Back up over terminating character if not already done. */ - if (! redo_char) { - ibp--; - obp--; - } - - /* Save this as a displacement from the beginning of the output - buffer. We can not save this as a position in the output - buffer, because it may get realloc'ed by RECACHE. */ - obufp_before_macroname = (obp - op->buf) - ident_length; - op_lineno_before_macroname = op->lineno; - - if (hp->type == T_PCSTRING) { - pcstring_used (hp); /* Mark the definition of this key - as needed, ensuring that it - will be output. */ - break; /* Exit loop, since the key cannot have a - definition any longer. */ - } - - /* Record whether the macro is disabled. */ - disabled = hp->type == T_DISABLED; - - /* This looks like a macro ref, but if the macro was disabled, - just copy its name and put in a marker if requested. */ - - if (disabled) { -#if 0 - /* This error check caught useful cases such as - #define foo(x,y) bar (x (y,0), y) - foo (foo, baz) */ - if (traditional) - error ("recursive use of macro `%s'", hp->name); -#endif - - if (output_marks) { - check_expand (op, limit - ibp + 2); - *obp++ = '\n'; - *obp++ = '-'; - } - break; - } - - /* If macro wants an arglist, verify that a '(' follows. - first skip all whitespace, copying it to the output - after the macro name. Then, if there is no '(', - decide this is not a macro call and leave things that way. */ - if ((hp->type == T_MACRO || hp->type == T_DISABLED) - && hp->value.defn->nargs >= 0) - { - U_CHAR *old_ibp = ibp; - U_CHAR *old_obp = obp; - int old_iln = ip->lineno; - int old_oln = op->lineno; - - while (1) { - /* Scan forward over whitespace, copying it to the output. */ - if (ibp == limit && ip->macro != 0) { - POPMACRO; - RECACHE; - old_ibp = ibp; - old_obp = obp; - old_iln = ip->lineno; - old_oln = op->lineno; - } - else if (is_space[*ibp]) { - *obp++ = *ibp++; - if (ibp[-1] == '\n') { - if (ip->macro == 0) { - /* Newline in a file. Count it. */ - ++ip->lineno; - ++op->lineno; - } else if (!output_marks) { - /* A newline mark, and we don't want marks - in the output. If it is newline-hyphen, - discard it entirely. Otherwise, it is - newline-whitechar, so keep the whitechar. */ - obp--; - if (*ibp == '-') - ibp++; - else { - if (*ibp == '\n') - ++op->lineno; - *obp++ = *ibp++; - } - } else { - /* A newline mark; copy both chars to the output. */ - *obp++ = *ibp++; - } - } - } - else if (ip->macro) - break; - else if (*ibp == '/') { - /* If a comment, copy it unchanged or discard it. */ - if (ibp[1] == '\\' && ibp[2] == '\n') - newline_fix (ibp + 1); - if (ibp[1] == '*') { - if (put_out_comments) { - *obp++ = '/'; - *obp++ = '*'; - } else if (! traditional) { - *obp++ = ' '; - } - for (ibp += 2; ibp < limit; ibp++) { - /* We need not worry about newline-marks, - since they are never found in comments. */ - if (ibp[0] == '*') { - if (ibp[1] == '\\' && ibp[2] == '\n') - newline_fix (ibp + 1); - if (ibp[1] == '/') { - ibp += 2; - if (put_out_comments) { - *obp++ = '*'; - *obp++ = '/'; - } - break; - } - } - else if (*ibp == '\n') { - /* Newline in a file. Count it. */ - ++ip->lineno; - ++op->lineno; - } - else - { -#ifdef MULTIBYTE_CHARS - /* CYGNUS LOCAL chill */ - if (! chill) - /* END CYGNUS LOCAL chill */ - { - int length; - length = local_mblen (ibp, limit - ibp); - if (length > 1) - { - if (put_out_comments) - { - bcopy (ibp, obp, length - 1); - obp += length - 1; - } - ibp += (length - 1); - } - } -#endif - } - if (put_out_comments) - *obp++ = *ibp; - } - } else if (ibp[1] == '/' && cplusplus_comments) { - if (put_out_comments) { - *obp++ = '/'; - *obp++ = '/'; - } else if (! traditional) { - *obp++ = ' '; - } - for (ibp += 2; ; ibp++) - { - if (*ibp == '\n') - break; - if (*ibp == '\\' && ibp[1] == '\n') - { - if (put_out_comments) - *obp++ = *ibp++; - } - else - { -#ifdef MULTIBYTE_CHARS - /* CYGNUS LOCAL chill */ - if (! chill) - /* END CYGNUS LOCAL chill */ - { - int length; - length = local_mblen (ibp, limit - ibp); - if (length > 1) - { - if (put_out_comments) - { - bcopy (ibp, obp, length - 1); - obp += length - 1; - } - ibp += (length - 1); - } - } -#endif - } - if (put_out_comments) - *obp++ = *ibp; - } - } else - break; - } - else if (ibp[0] == '\\' && ibp[1] == '\n') { - ibp += 2; - ++ip->lineno; - } - else break; - } - if (*ibp != '(') { - /* It isn't a macro call. - Put back the space that we just skipped. */ - ibp = old_ibp; - obp = old_obp; - ip->lineno = old_iln; - op->lineno = old_oln; - /* Exit the for loop. */ - break; - } - } - - /* This is now known to be a macro call. - Discard the macro name from the output, - along with any following whitespace just copied, - but preserve newlines if not outputting marks since this - is more likely to do the right thing with line numbers. */ - obp = op->buf + obufp_before_macroname; - if (output_marks) - op->lineno = op_lineno_before_macroname; - else { - int newlines = op->lineno - op_lineno_before_macroname; - while (0 < newlines--) - *obp++ = '\n'; - } - - /* Prevent accidental token-pasting with a character - before the macro call. */ - if (!traditional && obp != op->buf) { - switch (obp[-1]) { - case '!': case '%': case '&': case '*': - case '+': case '-': case '.': case '/': - case ':': case '<': case '=': case '>': - case '^': case '|': - /* If we are expanding a macro arg, make a newline marker - to separate the tokens. If we are making real output, - a plain space will do. */ - if (output_marks) - *obp++ = '\n'; - *obp++ = ' '; - } - } - - /* Expand the macro, reading arguments as needed, - and push the expansion on the input stack. */ - ip->bufp = ibp; - op->bufp = obp; - macroexpand (hp, op); - - /* Reexamine input stack, since macroexpand has pushed - a new level on it. */ - obp = op->bufp; - RECACHE; - break; - } -hashcollision: - ; - } /* End hash-table-search loop */ - } - ident_length = hash = 0; /* Stop collecting identifier */ - redo_char = 0; - concatenated = 0; - } /* End if (ident_length > 0) */ - } /* End switch */ - } /* End per-char loop */ - - /* Come here to return -- but first give an error message - if there was an unterminated successful conditional. */ - ending: - if (if_stack != ip->if_stack) - { - char *str; - - switch (if_stack->type) - { - case T_IF: - str = "if"; - break; - case T_IFDEF: - str = "ifdef"; - break; - case T_IFNDEF: - str = "ifndef"; - break; - case T_ELSE: - str = "else"; - break; - case T_ELIF: - str = "elif"; - break; - default: - abort (); - } - - error_with_line (line_for_error (if_stack->lineno), - "unterminated `#%s' conditional", str); - } - if_stack = ip->if_stack; -} - -/* - * Rescan a string into a temporary buffer and return the result - * as a FILE_BUF. Note this function returns a struct, not a pointer. - * - * OUTPUT_MARKS nonzero means keep Newline markers found in the input - * and insert such markers when appropriate. See `rescan' for details. - * OUTPUT_MARKS is 1 for macroexpanding a macro argument separately - * before substitution; it is 0 for other uses. - */ -static FILE_BUF -expand_to_temp_buffer (buf, limit, output_marks, assertions) - U_CHAR *buf, *limit; - int output_marks, assertions; -{ - register FILE_BUF *ip; - FILE_BUF obuf; - int length = limit - buf; - U_CHAR *buf1; - int odepth = indepth; - int save_assertions_flag = assertions_flag; - - assertions_flag = assertions; - - if (length < 0) - abort (); - - /* Set up the input on the input stack. */ - - buf1 = (U_CHAR *) alloca (length + 1); - { - register U_CHAR *p1 = buf; - register U_CHAR *p2 = buf1; - - while (p1 != limit) - *p2++ = *p1++; - } - buf1[length] = 0; - - /* Set up to receive the output. */ - - obuf.length = length * 2 + 100; /* Usually enough. Why be stingy? */ - obuf.bufp = obuf.buf = (U_CHAR *) xmalloc (obuf.length); - obuf.nominal_fname = 0; - obuf.inc = 0; - obuf.dir = 0; - obuf.fname = 0; - obuf.macro = 0; - obuf.if_stack = 0; - obuf.free_ptr = 0; - obuf.system_header_p = 0; - - CHECK_DEPTH ({return obuf;}); - - ++indepth; - - ip = &instack[indepth]; - ip->fname = 0; - ip->nominal_fname = 0; - ip->nominal_fname_len = 0; - ip->inc = 0; - ip->system_header_p = 0; - ip->macro = 0; - ip->free_ptr = 0; - ip->length = length; - ip->buf = ip->bufp = buf1; - ip->if_stack = if_stack; - - ip->lineno = obuf.lineno = 1; - - /* Scan the input, create the output. */ - rescan (&obuf, output_marks); - - /* Pop input stack to original state. */ - --indepth; - - if (indepth != odepth) - abort (); - - /* Record the output. */ - obuf.length = obuf.bufp - obuf.buf; - - assertions_flag = save_assertions_flag; - return obuf; -} - -/* - * Process a # directive. Expects IP->bufp to point after the '#', as in - * `#define foo bar'. Passes to the directive handler - * (do_define, do_include, etc.): the addresses of the 1st and - * last chars of the directive (starting immediately after the # - * keyword), plus op and the keyword table pointer. If the directive - * contains comments it is copied into a temporary buffer sans comments - * and the temporary buffer is passed to the directive handler instead. - * Likewise for backslash-newlines. - * - * Returns nonzero if this was a known # directive. - * Otherwise, returns zero, without advancing the input pointer. - */ - -static int -handle_directive (ip, op) - FILE_BUF *ip, *op; -{ - register U_CHAR *bp, *cp; - register struct directive *kt; - register int ident_length; - U_CHAR *resume_p; - - /* Nonzero means we must copy the entire directive - to get rid of comments or backslash-newlines. */ - int copy_directive = 0; - - U_CHAR *ident, *after_ident; - - bp = ip->bufp; - - /* Record where the directive started. do_xifdef needs this. */ - directive_start = bp - 1; - - ignore_escape_flag = 1; - - /* Skip whitespace and \-newline. */ - while (1) { - if (is_hor_space[*bp]) { - if (*bp != ' ' && *bp != '\t' && pedantic) - pedwarn ("%s in preprocessing directive", char_name[*bp]); - bp++; - } else if (*bp == '/') { - if (bp[1] == '\\' && bp[2] == '\n') - newline_fix (bp + 1); - if (! (bp[1] == '*' || (cplusplus_comments && bp[1] == '/'))) - break; - ip->bufp = bp + 2; - skip_to_end_of_comment (ip, &ip->lineno, 0); - bp = ip->bufp; - } else if (*bp == '\\' && bp[1] == '\n') { - bp += 2; ip->lineno++; - } else break; - } - - /* Now find end of directive name. - If we encounter a backslash-newline, exchange it with any following - symbol-constituents so that we end up with a contiguous name. */ - - cp = bp; - while (1) { - if (is_idchar[*cp]) - cp++; - else { - if (*cp == '\\' && cp[1] == '\n') - name_newline_fix (cp); - if (is_idchar[*cp]) - cp++; - else break; - } - } - ident_length = cp - bp; - ident = bp; - after_ident = cp; - - /* A line of just `#' becomes blank. */ - - if (ident_length == 0 && *after_ident == '\n') { - ip->bufp = after_ident; - return 1; - } - - if (ident_length == 0 || !is_idstart[*ident]) { - U_CHAR *p = ident; - while (is_idchar[*p]) { - if (*p < '0' || *p > '9') - break; - p++; - } - /* Handle # followed by a line number. */ - if (p != ident && !is_idchar[*p]) { - static struct directive line_directive_table[] = { - { 4, do_line, "line", T_LINE}, - }; - if (pedantic) - pedwarn ("`#' followed by integer"); - after_ident = ident; - kt = line_directive_table; - ignore_escape_flag = 0; - goto old_linenum; - } - - /* Avoid error for `###' and similar cases unless -pedantic. */ - if (p == ident) { - while (*p == '#' || is_hor_space[*p]) p++; - if (*p == '\n') { - if (pedantic && !lang_asm) - warning ("invalid preprocessing directive"); - return 0; - } - } - - if (!lang_asm) - error ("invalid preprocessing directive name"); - - return 0; - } - - /* - * Decode the keyword and call the appropriate expansion - * routine, after moving the input pointer up to the next line. - */ - for (kt = directive_table; kt->length > 0; kt++) { - if (kt->length == ident_length && !bcmp (kt->name, ident, ident_length)) { - register U_CHAR *buf; - register U_CHAR *limit; - int unterminated; - int junk; - int *already_output; - - /* Nonzero means do not delete comments within the directive. - #define needs this when -traditional. */ - int keep_comments; - - old_linenum: - - limit = ip->buf + ip->length; - unterminated = 0; - already_output = 0; - keep_comments = traditional && kt->type == T_DEFINE; - /* #import is defined only in Objective C, or when on the NeXT. */ - if (kt->type == T_IMPORT - && !(objc || lookup ((U_CHAR *) "__NeXT__", -1, -1))) - break; - - /* Find the end of this directive (first newline not backslashed - and not in a string or comment). - Set COPY_DIRECTIVE if the directive must be copied - (it contains a backslash-newline or a comment). */ - - buf = bp = after_ident; - while (bp < limit) { - register U_CHAR c = *bp++; - switch (c) { - case '\\': - if (bp < limit) { - if (*bp == '\n') { - ip->lineno++; - copy_directive = 1; - bp++; - } else if (traditional) - bp++; - } - break; - - case '"': - /* "..." is special for #include. */ - if (IS_INCLUDE_DIRECTIVE_TYPE (kt->type)) { - while (bp < limit && *bp != '\n') { - if (*bp == '"') { - bp++; - break; - } - if (*bp == '\\' && bp[1] == '\n') { - ip->lineno++; - copy_directive = 1; - bp++; - } - bp++; - } - break; - } - /* Fall through. */ - case '\'': - bp = skip_quoted_string (bp - 1, limit, ip->lineno, &ip->lineno, ©_directive, &unterminated); - /* Don't bother calling the directive if we already got an error - message due to unterminated string. Skip everything and pretend - we called the directive. */ - if (unterminated) { - if (traditional) { - /* Traditional preprocessing permits unterminated strings. */ - ip->bufp = bp; - goto endloop1; - } - ip->bufp = bp; - return 1; - } - break; - - /* <...> is special for #include. */ - case '<': - if (! IS_INCLUDE_DIRECTIVE_TYPE (kt->type)) - break; - while (bp < limit && *bp != '>' && *bp != '\n') { - if (*bp == '\\' && bp[1] == '\n') { - ip->lineno++; - copy_directive = 1; - bp++; - } - bp++; - } - break; - - case '/': - if (*bp == '\\' && bp[1] == '\n') - newline_fix (bp); - if (*bp == '*' - || (cplusplus_comments && *bp == '/')) { - U_CHAR *obp = bp - 1; - ip->bufp = bp + 1; - skip_to_end_of_comment (ip, &ip->lineno, 0); - bp = ip->bufp; - /* No need to copy the directive because of a comment at the end; - just don't include the comment in the directive. */ - if (!put_out_comments) { - U_CHAR *p; - for (p = bp; *p == ' ' || *p == '\t'; p++) - continue; - if (*p == '\n') { - bp = obp; - goto endloop1; - } - } - /* Don't remove the comments if -traditional. */ - if (! keep_comments) - copy_directive++; - } - break; - - case '\f': - case '\r': - case '\v': - if (pedantic) - pedwarn ("%s in preprocessing directive", char_name[c]); - break; - - case '\n': - --bp; /* Point to the newline */ - ip->bufp = bp; - goto endloop1; - } - } - ip->bufp = bp; - - endloop1: - resume_p = ip->bufp; - /* BP is the end of the directive. - RESUME_P is the next interesting data after the directive. - A comment may come between. */ - - /* If a directive should be copied through, and -C was given, - pass it through before removing comments. */ - if (!no_output && put_out_comments - && (kt->type == T_DEFINE ? dump_macros == dump_definitions - : IS_INCLUDE_DIRECTIVE_TYPE (kt->type) ? dump_includes - : kt->type == T_PRAGMA)) { - int len; - - /* Output directive name. */ - check_expand (op, kt->length + 2); - /* Make sure # is at the start of a line */ - if (op->bufp > op->buf && op->bufp[-1] != '\n') { - op->lineno++; - *op->bufp++ = '\n'; - } - *op->bufp++ = '#'; - bcopy (kt->name, op->bufp, kt->length); - op->bufp += kt->length; - - /* Output arguments. */ - len = (bp - buf); - check_expand (op, len); - bcopy (buf, (char *) op->bufp, len); - op->bufp += len; - /* Take account of any (escaped) newlines just output. */ - while (--len >= 0) - if (buf[len] == '\n') - op->lineno++; - - already_output = &junk; - } /* Don't we need a newline or #line? */ - - if (copy_directive) { - register U_CHAR *xp = buf; - /* Need to copy entire directive into temp buffer before dispatching */ - - cp = (U_CHAR *) alloca (bp - buf + 5); /* room for directive plus - some slop */ - buf = cp; - - /* Copy to the new buffer, deleting comments - and backslash-newlines (and whitespace surrounding the latter). */ - - while (xp < bp) { - register U_CHAR c = *xp++; - *cp++ = c; - - switch (c) { - case '\n': - abort (); /* A bare newline should never part of the line. */ - break; - - /* <...> is special for #include. */ - case '<': - if (! IS_INCLUDE_DIRECTIVE_TYPE (kt->type)) - break; - while (xp < bp && c != '>') { - c = *xp++; - if (c == '\\' && xp < bp && *xp == '\n') - xp++; - else - *cp++ = c; - } - break; - - case '\\': - if (*xp == '\n') { - xp++; - cp--; - if (cp != buf && is_hor_space[cp[-1]]) { - while (cp - 1 != buf && is_hor_space[cp[-2]]) - cp--; - SKIP_WHITE_SPACE (xp); - } else if (is_hor_space[*xp]) { - *cp++ = *xp++; - SKIP_WHITE_SPACE (xp); - } - } else if (traditional && xp < bp) { - *cp++ = *xp++; - } - break; - - case '\'': - case '\"': - { - register U_CHAR *bp1 - = skip_quoted_string (xp - 1, bp, ip->lineno, - NULL_PTR, NULL_PTR, NULL_PTR); - while (xp != bp1) - *cp++ = *xp++; - } - break; - - case '/': - if (*xp == '*' - || (cplusplus_comments && *xp == '/')) { - ip->bufp = xp + 1; - /* If we already copied the directive through, - already_output != 0 prevents outputting comment now. */ - skip_to_end_of_comment (ip, already_output, 0); - if (keep_comments) - while (xp != ip->bufp) - *cp++ = *xp++; - /* Delete or replace the slash. */ - else if (traditional) - cp--; - else - cp[-1] = ' '; - xp = ip->bufp; - } - } - } - - /* Null-terminate the copy. */ - - *cp = 0; - } else - cp = bp; - - ip->bufp = resume_p; - - /* Some directives should be written out for cc1 to process, - just as if they were not defined. And sometimes we're copying - directives through. */ - - if (!no_output && already_output == 0 - && (kt->type == T_DEFINE ? (int) dump_names <= (int) dump_macros - : IS_INCLUDE_DIRECTIVE_TYPE (kt->type) ? dump_includes - : kt->type == T_PRAGMA)) { - int len; - - /* Output directive name. */ - check_expand (op, kt->length + 1); - *op->bufp++ = '#'; - bcopy (kt->name, (char *) op->bufp, kt->length); - op->bufp += kt->length; - - if (kt->type == T_DEFINE && dump_macros == dump_names) { - /* Output `#define name' only. */ - U_CHAR *xp = buf; - U_CHAR *yp; - SKIP_WHITE_SPACE (xp); - yp = xp; - while (is_idchar[*xp]) xp++; - len = (xp - yp); - check_expand (op, len + 1); - *op->bufp++ = ' '; - bcopy (yp, (char *) op->bufp, len); - } else { - /* Output entire directive. */ - len = (cp - buf); - check_expand (op, len); - bcopy (buf, (char *) op->bufp, len); - } - op->bufp += len; - } /* Don't we need a newline or #line? */ - - /* Call the appropriate directive handler. buf now points to - either the appropriate place in the input buffer, or to - the temp buffer if it was necessary to make one. cp - points to the first char after the contents of the (possibly - copied) directive, in either case. */ - (*kt->func) (buf, cp, op, kt); - check_expand (op, ip->length - (ip->bufp - ip->buf)); - - return 1; - } - } - - /* It is deliberate that we don't warn about undefined directives. - That is the responsibility of cc1. */ - return 0; -} - -static struct tm * -timestamp () -{ - static struct tm *timebuf; - if (!timebuf) { - time_t t = time ((time_t *) 0); - timebuf = localtime (&t); - } - return timebuf; -} - -static char *monthnames[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", - "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", - }; - -/* - * expand things like __FILE__. Place the expansion into the output - * buffer *without* rescanning. - */ - -static void -special_symbol (hp, op) - HASHNODE *hp; - FILE_BUF *op; -{ - char *buf; - int i, len; - int true_indepth; - FILE_BUF *ip = NULL; - struct tm *timebuf; - - int paren = 0; /* For special `defined' keyword */ - - if (pcp_outfile && pcp_inside_if - && hp->type != T_SPEC_DEFINED && hp->type != T_CONST) - error ("Predefined macro `%s' used inside `#if' during precompilation", - hp->name); - - for (i = indepth; i >= 0; i--) - if (instack[i].fname != NULL) { - ip = &instack[i]; - break; - } - if (ip == NULL) { - error ("cccp error: not in any file?!"); - return; /* the show must go on */ - } - - switch (hp->type) { - case T_FILE: - case T_BASE_FILE: - { - FILE_BUF *p = hp->type == T_FILE ? ip : &instack[0]; - char *string = p->nominal_fname; - - if (string) - { - size_t string_len = p->nominal_fname_len; - buf = (char *) alloca (3 + 4 * string_len); - quote_string (buf, string, string_len); - } - else - buf = "\"\""; - - break; - } - - case T_INCLUDE_LEVEL: - true_indepth = 0; - for (i = indepth; i >= 0; i--) - if (instack[i].fname != NULL) - true_indepth++; - - buf = (char *) alloca (8); /* Eight bytes ought to be more than enough */ - sprintf (buf, "%d", true_indepth - 1); - break; - - case T_VERSION: - buf = (char *) alloca (3 + strlen (version_string)); - sprintf (buf, "\"%s\"", version_string); - break; - -#ifndef NO_BUILTIN_SIZE_TYPE - case T_SIZE_TYPE: - buf = SIZE_TYPE; - break; -#endif - -#ifndef NO_BUILTIN_PTRDIFF_TYPE - case T_PTRDIFF_TYPE: - buf = PTRDIFF_TYPE; - break; -#endif - -/* CYGNUS LOCAL vmakarov */ -#ifndef NO_BUILTIN_WCHAR_TYPE -/* END CYGNUS LOCAL */ - case T_WCHAR_TYPE: - buf = wchar_type; - break; -/* CYGNUS LOCAL vmakarov */ -#endif -/* END CYGNUS LOCAL */ - - case T_USER_LABEL_PREFIX_TYPE: - buf = user_label_prefix; - break; - - case T_REGISTER_PREFIX_TYPE: - buf = REGISTER_PREFIX; - break; - - case T_IMMEDIATE_PREFIX_TYPE: - buf = IMMEDIATE_PREFIX; - break; - - case T_CONST: - buf = hp->value.cpval; -#ifdef STDC_0_IN_SYSTEM_HEADERS - if (ip->system_header_p - && hp->length == 8 && bcmp (hp->name, "__STDC__", 8) == 0 - && !lookup ((U_CHAR *) "__STRICT_ANSI__", -1, -1)) - buf = "0"; -#endif - if (pcp_inside_if && pcp_outfile) - /* Output a precondition for this macro use */ - fprintf (pcp_outfile, "#define %s %s\n", hp->name, buf); - break; - - case T_SPECLINE: - buf = (char *) alloca (10); - sprintf (buf, "%d", ip->lineno); - break; - - case T_DATE: - case T_TIME: - buf = (char *) alloca (20); - timebuf = timestamp (); - if (hp->type == T_DATE) - sprintf (buf, "\"%s %2d %4d\"", monthnames[timebuf->tm_mon], - timebuf->tm_mday, timebuf->tm_year + 1900); - else - sprintf (buf, "\"%02d:%02d:%02d\"", timebuf->tm_hour, timebuf->tm_min, - timebuf->tm_sec); - break; - - case T_SPEC_DEFINED: - buf = " 0 "; /* Assume symbol is not defined */ - ip = &instack[indepth]; - SKIP_WHITE_SPACE (ip->bufp); - if (*ip->bufp == '(') { - paren++; - ip->bufp++; /* Skip over the paren */ - SKIP_WHITE_SPACE (ip->bufp); - } - - if (!is_idstart[*ip->bufp]) - goto oops; - if (ip->bufp[0] == 'L' && (ip->bufp[1] == '\'' || ip->bufp[1] == '"')) - goto oops; - if ((hp = lookup (ip->bufp, -1, -1))) { - if (pcp_outfile && pcp_inside_if - && (hp->type == T_CONST - || (hp->type == T_MACRO && hp->value.defn->predefined))) - /* Output a precondition for this macro use. */ - fprintf (pcp_outfile, "#define %s\n", hp->name); - buf = " 1 "; - } - else - if (pcp_outfile && pcp_inside_if) { - /* Output a precondition for this macro use */ - U_CHAR *cp = ip->bufp; - fprintf (pcp_outfile, "#undef "); - while (is_idchar[*cp]) /* Ick! */ - fputc (*cp++, pcp_outfile); - putc ('\n', pcp_outfile); - } - while (is_idchar[*ip->bufp]) - ++ip->bufp; - SKIP_WHITE_SPACE (ip->bufp); - if (paren) { - if (*ip->bufp != ')') - goto oops; - ++ip->bufp; - } - break; - -oops: - - error ("`defined' without an identifier"); - break; - - default: - error ("cccp error: invalid special hash type"); /* time for gdb */ - abort (); - } - len = strlen (buf); - check_expand (op, len); - bcopy (buf, (char *) op->bufp, len); - op->bufp += len; - - return; -} - - -/* Routines to handle #directives */ - -/* Handle #include and #import. - This function expects to see "fname" or <fname> on the input. */ - -static int -do_include (buf, limit, op, keyword) - U_CHAR *buf, *limit; - FILE_BUF *op; - struct directive *keyword; -{ - U_CHAR *importing = keyword->type == T_IMPORT ? (U_CHAR *) "" : (U_CHAR *) 0; - int skip_dirs = (keyword->type == T_INCLUDE_NEXT); - static int import_warning = 0; - char *fname; /* Dynamically allocated fname buffer */ - char *pcftry; - char *pcfname; - char *fbeg, *fend; /* Beginning and end of fname */ - U_CHAR *fin; - - struct file_name_list *search_start = include; /* Chain of dirs to search */ - struct file_name_list *dsp; /* First in chain, if #include "..." */ - struct file_name_list *searchptr = 0; - size_t flen; - - int f = -3; /* file number */ - struct include_file *inc = 0; - - int retried = 0; /* Have already tried macro - expanding the include line*/ - int angle_brackets = 0; /* 0 for "...", 1 for <...> */ - int pcf = -1; - char *pcfbuf; - char *pcfbuflimit; - int pcfnum; - - if (pedantic && !instack[indepth].system_header_p) - { - if (importing) - pedwarn ("ANSI C does not allow `#import'"); - if (skip_dirs) - pedwarn ("ANSI C does not allow `#include_next'"); - } - - if (importing && warn_import && !inhibit_warnings - && !instack[indepth].system_header_p && !import_warning) { - import_warning = 1; - warning ("using `#import' is not recommended"); - fprintf (stderr, "The fact that a certain header file need not be processed more than once\n"); - fprintf (stderr, "should be indicated in the header file, not where it is used.\n"); - fprintf (stderr, "The best way to do this is with a conditional of this form:\n\n"); - fprintf (stderr, " #ifndef _FOO_H_INCLUDED\n"); - fprintf (stderr, " #define _FOO_H_INCLUDED\n"); - fprintf (stderr, " ... <real contents of file> ...\n"); - fprintf (stderr, " #endif /* Not _FOO_H_INCLUDED */\n\n"); - fprintf (stderr, "Then users can use `#include' any number of times.\n"); - fprintf (stderr, "GNU C automatically avoids processing the file more than once\n"); - fprintf (stderr, "when it is equipped with such a conditional.\n"); - } - -get_filename: - - fin = buf; - SKIP_WHITE_SPACE (fin); - /* Discard trailing whitespace so we can easily see - if we have parsed all the significant chars we were given. */ - while (limit != fin && is_hor_space[limit[-1]]) limit--; - fbeg = fend = (char *) alloca (limit - fin); - - switch (*fin++) { - case '\"': - { - FILE_BUF *fp; - /* Copy the operand text, concatenating the strings. */ - { - for (;;) { - for (;;) { - if (fin == limit) - goto invalid_include_file_name; - *fend = *fin++; - if (*fend == '"') - break; - fend++; - } - if (fin == limit) - break; - /* If not at the end, there had better be another string. */ - /* Skip just horiz space, and don't go past limit. */ - while (fin != limit && is_hor_space[*fin]) fin++; - if (fin != limit && *fin == '\"') - fin++; - else - goto fail; - } - } - - /* We have "filename". Figure out directory this source - file is coming from and put it on the front of the list. */ - - /* If -I- was specified, don't search current dir, only spec'd ones. */ - if (ignore_srcdir) break; - - for (fp = &instack[indepth]; fp >= instack; fp--) - { - int n; - char *nam; - - if ((nam = fp->nominal_fname) != NULL) { - /* Found a named file. Figure out dir of the file, - and put it in front of the search list. */ - dsp = ((struct file_name_list *) - alloca (sizeof (struct file_name_list) - + fp->nominal_fname_len)); - strcpy (dsp->fname, nam); - simplify_filename (dsp->fname); - nam = base_name (dsp->fname); - *nam = 0; - /* But for efficiency's sake, do not insert the dir - if it matches the search list's first dir. */ - dsp->next = search_start; - if (!search_start || strcmp (dsp->fname, search_start->fname)) { - search_start = dsp; - n = nam - dsp->fname; - if (n + INCLUDE_LEN_FUDGE > max_include_len) - max_include_len = n + INCLUDE_LEN_FUDGE; - } - dsp[0].got_name_map = 0; - break; - } - } - break; - } - - case '<': - while (fin != limit && *fin != '>') - *fend++ = *fin++; - if (*fin == '>' && fin + 1 == limit) { - angle_brackets = 1; - /* If -I-, start with the first -I dir after the -I-. */ - search_start = first_bracket_include; - break; - } - goto fail; - - default: - - fail: - if (! retried) { - /* Expand buffer and then remove any newline markers. - We can't just tell expand_to_temp_buffer to omit the markers, - since it would put extra spaces in include file names. */ - FILE_BUF trybuf; - U_CHAR *src; - int errors_before_expansion = errors; - trybuf = expand_to_temp_buffer (buf, limit, 1, 0); - if (errors != errors_before_expansion) { - free (trybuf.buf); - goto invalid_include_file_name; - } - src = trybuf.buf; - buf = (U_CHAR *) alloca (trybuf.bufp - trybuf.buf + 1); - limit = buf; - while (src != trybuf.bufp) { - switch ((*limit++ = *src++)) { - case '\n': - limit--; - src++; - break; - - case '\'': - case '\"': - { - U_CHAR *src1 = skip_quoted_string (src - 1, trybuf.bufp, 0, - NULL_PTR, NULL_PTR, NULL_PTR); - while (src != src1) - *limit++ = *src++; - } - break; - } - } - *limit = 0; - free (trybuf.buf); - retried = 1; - goto get_filename; - } - - invalid_include_file_name: - error ("`#%s' expects \"FILENAME\" or <FILENAME>", keyword->name); - return 0; - } - - /* For #include_next, skip in the search path - past the dir in which the containing file was found. */ - if (skip_dirs) { - FILE_BUF *fp; - for (fp = &instack[indepth]; fp >= instack; fp--) - if (fp->fname != NULL) { - /* fp->dir is null if the containing file was specified - with an absolute file name. In that case, don't skip anything. */ - if (fp->dir) - search_start = fp->dir->next; - break; - } - } - - *fend = 0; - flen = simplify_filename (fbeg); - - if (flen == 0) - { - error ("empty file name in `#%s'", keyword->name); - return 0; - } - - /* Allocate this permanently, because it gets stored in the definitions - of macros. */ - fname = xmalloc (max_include_len + flen + 1); - /* + 1 above for terminating null. */ - - system_include_depth += angle_brackets; - - /* If specified file name is absolute, just open it. */ - - if (absolute_filename (fbeg)) { - strcpy (fname, fbeg); - f = open_include_file (fname, NULL_PTR, importing, &inc); - } else { - - struct bypass_dir { - struct bypass_dir *next; - char *fname; - struct file_name_list *searchptr; - } **bypass_slot = 0; - - /* Search directory path, trying to open the file. - Copy each filename tried into FNAME. */ - - for (searchptr = search_start; searchptr; searchptr = searchptr->next) { - - if (searchptr == first_bracket_include) { - /* Go to bypass directory if we know we've seen this file before. */ - static struct bypass_dir *bypass_hashtab[INCLUDE_HASHSIZE]; - struct bypass_dir *p; - bypass_slot = &bypass_hashtab[hashf ((U_CHAR *) fbeg, flen, - INCLUDE_HASHSIZE)]; - for (p = *bypass_slot; p; p = p->next) - if (!strcmp (fbeg, p->fname)) { - searchptr = p->searchptr; - bypass_slot = 0; - break; - } - } - - strcpy (fname, searchptr->fname); - strcat (fname, fbeg); - f = open_include_file (fname, searchptr, importing, &inc); - if (f != -1) { - if (bypass_slot && searchptr != first_bracket_include) { - /* This is the first time we found this include file, - and we found it after first_bracket_include. - Record its location so that we can bypass to here next time. */ - struct bypass_dir *p - = (struct bypass_dir *) xmalloc (sizeof (struct bypass_dir)); - p->next = *bypass_slot; - p->fname = fname + strlen (searchptr->fname); - p->searchptr = searchptr; - *bypass_slot = p; - } - break; - } - if (errno != ENOENT && errno != ENOTDIR) - break; - } - } - - - if (f < 0) { - - if (f == -2) { - /* The file was already included. */ - - /* If generating dependencies and -MG was specified, we assume missing - files are leaf files, living in the same directory as the source file - or other similar place; these missing files may be generated from - other files and may not exist yet (eg: y.tab.h). */ - } else if (print_deps_missing_files - && (system_include_depth != 0) < print_deps) - { - /* If it was requested as a system header file, - then assume it belongs in the first place to look for such. */ - if (angle_brackets) - { - if (search_start) { - char *p = (char *) alloca (strlen (search_start->fname) - + strlen (fbeg) + 1); - strcpy (p, search_start->fname); - strcat (p, fbeg); - deps_output (p, ' '); - } - } - else - { - /* Otherwise, omit the directory, as if the file existed - in the directory with the source. */ - deps_output (fbeg, ' '); - } - } - /* If -M was specified, and this header file won't be added to the - dependency list, then don't count this as an error, because we can - still produce correct output. Otherwise, we can't produce correct - output, because there may be dependencies we need inside the missing - file, and we don't know what directory this missing file exists in. */ - else if (0 < print_deps && print_deps <= (system_include_depth != 0)) - warning ("No include path in which to find %s", fbeg); - else if (f != -3) - error_from_errno (fbeg); - else - error ("No include path in which to find %s", fbeg); - - } else { - - /* Actually process the file. */ - - pcftry = (char *) alloca (strlen (fname) + 30); - pcfbuf = 0; - pcfnum = 0; - - if (!no_precomp) - { - do { - sprintf (pcftry, "%s%d", fname, pcfnum++); - - pcf = open (pcftry, O_RDONLY, 0666); - if (pcf != -1) - { - struct stat s; - - if (fstat (pcf, &s) != 0) - pfatal_with_name (pcftry); - if (! INO_T_EQ (inc->st.st_ino, s.st_ino) - || inc->st.st_dev != s.st_dev) - { - pcfbuf = check_precompiled (pcf, &s, fname, &pcfbuflimit); - /* Don't need it any more. */ - close (pcf); - } - else - { - /* Don't need it at all. */ - close (pcf); - break; - } - } - } while (pcf != -1 && !pcfbuf); - } - - /* Actually process the file */ - if (pcfbuf) { - pcfname = xmalloc (strlen (pcftry) + 1); - strcpy (pcfname, pcftry); - pcfinclude ((U_CHAR *) pcfbuf, (U_CHAR *) fname, op); - } - else - finclude (f, inc, op, is_system_include (fname), searchptr); - } - - system_include_depth -= angle_brackets; - - return 0; -} - -/* Return nonzero if the given FILENAME is an absolute pathname which - designates a file within one of the known "system" include file - directories. We assume here that if the given FILENAME looks like - it is the name of a file which resides either directly in a "system" - include file directory, or within any subdirectory thereof, then the - given file must be a "system" include file. This function tells us - if we should suppress pedantic errors/warnings for the given FILENAME. - - The value is 2 if the file is a C-language system header file - for which C++ should (on most systems) assume `extern "C"'. */ - -static int -is_system_include (filename) - register char *filename; -{ - struct file_name_list *searchptr; - - for (searchptr = first_system_include; searchptr; - searchptr = searchptr->next) - if (! strncmp (searchptr->fname, filename, strlen (searchptr->fname))) - return searchptr->c_system_include_path + 1; - return 0; -} - -/* Yield the non-directory suffix of a file name. */ - -static char * -base_name (fname) - char *fname; -{ - char *s = fname; - char *p; -#if defined (__MSDOS__) || defined (_WIN32) - if (ISALPHA (s[0]) && s[1] == ':') s += 2; -#endif - if ((p = rindex (s, '/'))) s = p + 1; -#ifdef DIR_SEPARATOR - if ((p = rindex (s, DIR_SEPARATOR))) s = p + 1; -#endif - return s; -} - -/* Yield nonzero if FILENAME is absolute (i.e. not relative). */ - -static int -absolute_filename (filename) - char *filename; -{ -#if defined (__MSDOS__) || (defined (_WIN32) && !defined (__CYGWIN__)) - if (ISALPHA (filename[0]) && filename[1] == ':') filename += 2; -#endif -#if defined (__CYGWIN__) - /* At present, any path that begins with a drive spec is absolute. */ - if (ISALPHA (filename[0]) && filename[1] == ':') return 1; -#endif - if (filename[0] == '/') return 1; -#ifdef DIR_SEPARATOR - if (filename[0] == DIR_SEPARATOR) return 1; -#endif - return 0; -} - -/* Remove unnecessary characters from FILENAME in place, - to avoid unnecessary filename aliasing. - Return the length of the resulting string. - - Do only the simplifications allowed by Posix. - It is OK to miss simplifications on non-Posix hosts, - since this merely leads to suboptimal results. */ - -static size_t -simplify_filename (filename) - char *filename; -{ - register char *from = filename; - register char *to = filename; - char *to0; - - /* Remove redundant initial /s. */ - if (*from == '/') { - *to++ = '/'; - if (*++from == '/') { - if (*++from == '/') { - /* 3 or more initial /s are equivalent to 1 /. */ - while (*++from == '/') - continue; - } else { - /* On some hosts // differs from /; Posix allows this. */ - static int slashslash_vs_slash; - if (slashslash_vs_slash == 0) { - struct stat s1, s2; - slashslash_vs_slash = ((stat ("/", &s1) == 0 && stat ("//", &s2) == 0 - && INO_T_EQ (s1.st_ino, s2.st_ino) - && s1.st_dev == s2.st_dev) - ? 1 : -1); - } - if (slashslash_vs_slash < 0) - *to++ = '/'; - } - } - } - to0 = to; - - for (;;) { - if (from[0] == '.' && from[1] == '/') - from += 2; - else - { - /* Copy this component and trailing /, if any. */ - while ((*to++ = *from++) != '/') { - if (!to[-1]) { - /* Trim . component at end of nonempty name. */ - to -= filename <= to - 3 && to[-3] == '/' && to[-2] == '.'; - - /* Trim unnecessary trailing /s. */ - while (to0 < --to && to[-1] == '/') - continue; - - *to = 0; - return to - filename; - } - } - } - - /* Skip /s after a /. */ - while (*from == '/') - from++; - } -} - -/* The file_name_map structure holds a mapping of file names for a - particular directory. This mapping is read from the file named - FILE_NAME_MAP_FILE in that directory. Such a file can be used to - map filenames on a file system with severe filename restrictions, - such as DOS. The format of the file name map file is just a series - of lines with two tokens on each line. The first token is the name - to map, and the second token is the actual name to use. */ - -struct file_name_map -{ - struct file_name_map *map_next; - char *map_from; - char *map_to; -}; - -#define FILE_NAME_MAP_FILE "header.gcc" - -/* Read a space delimited string of unlimited length from a stdio - file. */ - -static char * -read_filename_string (ch, f) - int ch; - FILE *f; -{ - char *alloc, *set; - int len; - - len = 20; - set = alloc = xmalloc (len + 1); - if (! is_space[ch]) - { - *set++ = ch; - while ((ch = getc (f)) != EOF && ! is_space[ch]) - { - if (set - alloc == len) - { - len *= 2; - alloc = xrealloc (alloc, len + 1); - set = alloc + len / 2; - } - *set++ = ch; - } - } - *set = '\0'; - ungetc (ch, f); - return alloc; -} - -/* Read the file name map file for DIRNAME. - If DIRNAME is empty, read the map file for the working directory; - otherwise DIRNAME must end in '/'. */ - -static struct file_name_map * -read_name_map (dirname) - char *dirname; -{ - /* This structure holds a linked list of file name maps, one per - directory. */ - struct file_name_map_list - { - struct file_name_map_list *map_list_next; - char *map_list_name; - struct file_name_map *map_list_map; - }; - static struct file_name_map_list *map_list; - register struct file_name_map_list *map_list_ptr; - char *name; - FILE *f; - size_t dirlen; - - for (map_list_ptr = map_list; map_list_ptr; - map_list_ptr = map_list_ptr->map_list_next) - if (! strcmp (map_list_ptr->map_list_name, dirname)) - return map_list_ptr->map_list_map; - - map_list_ptr = ((struct file_name_map_list *) - xmalloc (sizeof (struct file_name_map_list))); - map_list_ptr->map_list_name = savestring (dirname); - map_list_ptr->map_list_map = NULL; - - dirlen = strlen (dirname); - name = (char *) alloca (dirlen + strlen (FILE_NAME_MAP_FILE) + 1); - strcpy (name, dirname); - strcat (name, FILE_NAME_MAP_FILE); - f = fopen (name, "r"); - if (!f) - map_list_ptr->map_list_map = NULL; - else - { - int ch; - - while ((ch = getc (f)) != EOF) - { - char *from, *to; - struct file_name_map *ptr; - size_t tolen; - - if (is_space[ch]) - continue; - from = read_filename_string (ch, f); - while ((ch = getc (f)) != EOF && is_hor_space[ch]) - ; - to = read_filename_string (ch, f); - - simplify_filename (from); - tolen = simplify_filename (to); - - ptr = ((struct file_name_map *) - xmalloc (sizeof (struct file_name_map))); - ptr->map_from = from; - - /* Make the real filename absolute. */ - if (absolute_filename (to)) - ptr->map_to = to; - else - { - ptr->map_to = xmalloc (dirlen + tolen + 1); - strcpy (ptr->map_to, dirname); - strcat (ptr->map_to, to); - free (to); - } - - ptr->map_next = map_list_ptr->map_list_map; - map_list_ptr->map_list_map = ptr; - - while ((ch = getc (f)) != '\n') - if (ch == EOF) - break; - } - fclose (f); - } - - map_list_ptr->map_list_next = map_list; - map_list = map_list_ptr; - - return map_list_ptr->map_list_map; -} - -/* Try to open include file FILENAME. SEARCHPTR is the directory - being tried from the include file search path. - IMPORTING is "" if we are importing, null otherwise. - Return -2 if found, either a matching name or a matching inode. - Otherwise, open the file and return a file descriptor if successful - or -1 if unsuccessful. - Unless unsuccessful, put a descriptor of the included file into *PINC. - This function maps filenames on file systems based on information read by - read_name_map. */ - -static int -open_include_file (filename, searchptr, importing, pinc) - char *filename; - struct file_name_list *searchptr; - U_CHAR *importing; - struct include_file **pinc; -{ - char *fname = remap ? remap_include_file (filename, searchptr) : filename; - int fd = -2; - - /* Look up FNAME in include_hashtab. */ - struct include_file **phead = &include_hashtab[hashf ((U_CHAR *) fname, - strlen (fname), - INCLUDE_HASHSIZE)]; - struct include_file *inc, *head = *phead; - for (inc = head; inc; inc = inc->next) - if (!strcmp (fname, inc->fname)) - break; - - if (!inc - || ! inc->control_macro - || (inc->control_macro[0] && ! lookup (inc->control_macro, -1, -1))) { - - fd = open (fname, O_RDONLY, 0); - - if (fd < 0) - { - return fd; - } - - if (!inc) { - /* FNAME was not in include_hashtab; insert a new entry. */ - inc = (struct include_file *) xmalloc (sizeof (struct include_file)); - inc->next = head; - inc->fname = fname; - inc->control_macro = 0; - inc->deps_output = 0; - if (fstat (fd, &inc->st) != 0) - pfatal_with_name (fname); - *phead = inc; - - /* Look for another file with the same inode and device. */ - if (lookup_ino_include (inc) - && inc->control_macro - && (!inc->control_macro[0] || lookup (inc->control_macro, -1, -1))) { - close (fd); - fd = -2; - } - } - - /* For -M, add this file to the dependencies. */ - if (! inc->deps_output && (system_include_depth != 0) < print_deps) { - inc->deps_output = 1; - deps_output (fname, ' '); - } - - /* Handle -H option. */ - if (print_include_names) - fprintf (stderr, "%*s%s\n", indepth, "", fname); - } - - if (importing) - inc->control_macro = importing; - - *pinc = inc; - return fd; -} - -/* Return the remapped name of the include file FILENAME. - SEARCHPTR is the directory being tried from the include file path. */ - -static char * -remap_include_file (filename, searchptr) - char *filename; - struct file_name_list *searchptr; -{ - register struct file_name_map *map; - register char *from; - - if (searchptr) - { - if (! searchptr->got_name_map) - { - searchptr->name_map = read_name_map (searchptr->fname); - searchptr->got_name_map = 1; - } - - /* Check the mapping for the directory we are using. */ - from = filename + strlen (searchptr->fname); - for (map = searchptr->name_map; map; map = map->map_next) - if (! strcmp (map->map_from, from)) - return map->map_to; - } - - from = base_name (filename); - - if (from != filename || !searchptr) - { - /* Try to find a mapping file for the particular directory we are - looking in. Thus #include <sys/types.h> will look up sys/types.h - in /usr/include/header.gcc and look up types.h in - /usr/include/sys/header.gcc. */ - - char *dir = (char *) alloca (from - filename + 1); - bcopy (filename, dir, from - filename); - dir[from - filename] = '\0'; - - for (map = read_name_map (dir); map; map = map->map_next) - if (! strcmp (map->map_from, from)) - return map->map_to; - } - - return filename; -} - -/* Insert INC into the include file table, hashed by device and inode number. - If a file with different name but same dev+ino was already in the table, - return 1 and set INC's control macro to the already-known macro. */ - -static int -lookup_ino_include (inc) - struct include_file *inc; -{ - int hash = ((unsigned) (inc->st.st_dev + INO_T_HASH (inc->st.st_ino)) - % INCLUDE_HASHSIZE); - struct include_file *i = include_ino_hashtab[hash]; - inc->next_ino = i; - include_ino_hashtab[hash] = inc; - - for (; i; i = i->next_ino) - if (INO_T_EQ (inc->st.st_ino, i->st.st_ino) - && inc->st.st_dev == i->st.st_dev) { - inc->control_macro = i->control_macro; - return 1; - } - - return 0; -} - -/* Process file descriptor F, which corresponds to include file INC, - with output to OP. - SYSTEM_HEADER_P is 1 if this file resides in any one of the known - "system" include directories (as decided by the `is_system_include' - function above). - DIRPTR is the link in the dir path through which this file was found, - or 0 if the file name was absolute. */ - -static void -finclude (f, inc, op, system_header_p, dirptr) - int f; - struct include_file *inc; - FILE_BUF *op; - int system_header_p; - struct file_name_list *dirptr; -{ - char *fname = inc->fname; - int i; - FILE_BUF *fp; /* For input stack frame */ - int missing_newline = 0; - - CHECK_DEPTH (return;); - - fp = &instack[indepth + 1]; - bzero ((char *) fp, sizeof (FILE_BUF)); - fp->nominal_fname = fp->fname = fname; - fp->nominal_fname_len = strlen (fname); - fp->inc = inc; - fp->length = 0; - fp->lineno = 1; - fp->if_stack = if_stack; - fp->system_header_p = system_header_p; - fp->dir = dirptr; - - if (S_ISREG (inc->st.st_mode)) { - size_t s = (size_t) inc->st.st_size; - if (s != inc->st.st_size || s + 2 < s) - memory_full (); - fp->buf = (U_CHAR *) xmalloc (s + 2); - fp->bufp = fp->buf; - - /* Read the file contents, knowing that s is an upper bound - on the number of bytes we can read. */ - fp->length = safe_read (f, (char *) fp->buf, s); - if (fp->length < 0) goto nope; - } - else if (S_ISDIR (inc->st.st_mode)) { - error ("directory `%s' specified in #include", fname); - close (f); - return; - } else { - /* Cannot count its file size before reading. - First read the entire file into heap and - copy them into buffer on stack. */ - - int bsize = 2000; - int st_size = 0; - - fp->buf = (U_CHAR *) xmalloc (bsize + 2); - - for (;;) { - i = safe_read (f, (char *) fp->buf + st_size, bsize - st_size); - if (i < 0) - goto nope; /* error! */ - st_size += i; - if (st_size != bsize) - break; /* End of file */ - bsize *= 2; - fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2); - } - fp->bufp = fp->buf; - fp->length = st_size; - } - - if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n') - /* Backslash-newline at end is not good enough. */ - || (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) { - fp->buf[fp->length++] = '\n'; - missing_newline = 1; - } - fp->buf[fp->length] = '\0'; - - /* Close descriptor now, so nesting does not use lots of descriptors. */ - close (f); - - /* Must do this before calling trigraph_pcp, so that the correct file name - will be printed in warning messages. */ - - indepth++; - input_file_stack_tick++; - - if (!no_trigraphs) - trigraph_pcp (fp); - - output_line_directive (fp, op, 0, enter_file); - rescan (op, 0); - - if (missing_newline) - fp->lineno--; - - if (pedantic && missing_newline) - pedwarn ("file does not end in newline"); - - indepth--; - input_file_stack_tick++; - output_line_directive (&instack[indepth], op, 0, leave_file); - free (fp->buf); - return; - - nope: - - perror_with_name (fname); - close (f); - free (fp->buf); -} - -/* Record that inclusion of the include file INC - should be controlled by the macro named MACRO_NAME. - This means that trying to include the file again - will do something if that macro is defined. */ - -static void -record_control_macro (inc, macro_name) - struct include_file *inc; - U_CHAR *macro_name; -{ - if (!inc->control_macro || inc->control_macro[0]) - inc->control_macro = macro_name; -} - -/* Load the specified precompiled header into core, and verify its - preconditions. PCF indicates the file descriptor to read, which must - be a regular file. *ST is its file status. - FNAME indicates the file name of the original header. - *LIMIT will be set to an address one past the end of the file. - If the preconditions of the file are not satisfied, the buffer is - freed and we return 0. If the preconditions are satisfied, return - the address of the buffer following the preconditions. The buffer, in - this case, should never be freed because various pieces of it will - be referred to until all precompiled strings are output at the end of - the run. */ - -static char * -check_precompiled (pcf, st, fname, limit) - int pcf; - struct stat *st; - char *fname ATTRIBUTE_UNUSED; - char **limit; -{ - int length = 0; - char *buf; - char *cp; - - if (pcp_outfile) - return 0; - - if (S_ISREG (st->st_mode)) - { - size_t s = (size_t) st->st_size; - if (s != st->st_size || s + 2 < s) - memory_full (); - buf = xmalloc (s + 2); - length = safe_read (pcf, buf, s); - if (length < 0) - goto nope; - } - else - abort (); - - if (length > 0 && buf[length-1] != '\n') - buf[length++] = '\n'; - buf[length] = '\0'; - - *limit = buf + length; - - /* File is in core. Check the preconditions. */ - if (!check_preconditions (buf)) - goto nope; - for (cp = buf; *cp; cp++) - ; -#ifdef DEBUG_PCP - fprintf (stderr, "Using preinclude %s\n", fname); -#endif - return cp + 1; - - nope: -#ifdef DEBUG_PCP - fprintf (stderr, "Cannot use preinclude %s\n", fname); -#endif - free (buf); - return 0; -} - -/* PREC (null terminated) points to the preconditions of a - precompiled header. These are a series of #define and #undef - lines which must match the current contents of the hash - table. */ - -static int -check_preconditions (prec) - char *prec; -{ - MACRODEF mdef; - char *lineend; - - while (*prec) { - lineend = index (prec, '\n'); - - if (*prec++ != '#') { - error ("Bad format encountered while reading precompiled file"); - return 0; - } - if (!strncmp (prec, "define", 6)) { - HASHNODE *hp; - - prec += 6; - mdef = create_definition ((U_CHAR *) prec, (U_CHAR *) lineend, NULL_PTR); - - if (mdef.defn == 0) - abort (); - - if ((hp = lookup (mdef.symnam, mdef.symlen, -1)) == NULL - || (hp->type != T_MACRO && hp->type != T_CONST) - || (hp->type == T_MACRO - && !compare_defs (mdef.defn, hp->value.defn) - && (mdef.defn->length != 2 - || mdef.defn->expansion[0] != '\n' - || mdef.defn->expansion[1] != ' '))) - return 0; - } else if (!strncmp (prec, "undef", 5)) { - char *name; - int len; - - prec += 5; - while (is_hor_space[(U_CHAR) *prec]) - prec++; - name = prec; - while (is_idchar[(U_CHAR) *prec]) - prec++; - len = prec - name; - - if (lookup ((U_CHAR *) name, len, -1)) - return 0; - } else { - error ("Bad format encountered while reading precompiled file"); - return 0; - } - prec = lineend + 1; - } - /* They all passed successfully */ - return 1; -} - -/* Process the main body of a precompiled file. BUF points to the - string section of the file, following the preconditions. LIMIT is one - character past the end. NAME is the name of the file being read - in. OP is the main output buffer. */ - -static void -pcfinclude (buf, name, op) - U_CHAR *buf, *name; - FILE_BUF *op; -{ - FILE_BUF tmpbuf; - int nstrings; - U_CHAR *cp = buf; - - /* First in the file comes 4 bytes indicating the number of strings, */ - /* in network byte order. (MSB first). */ - nstrings = *cp++; - nstrings = (nstrings << 8) | *cp++; - nstrings = (nstrings << 8) | *cp++; - nstrings = (nstrings << 8) | *cp++; - - /* Looping over each string... */ - while (nstrings--) { - U_CHAR *string_start; - U_CHAR *endofthiskey; - STRINGDEF *str; - int nkeys; - - /* Each string starts with a STRINGDEF structure (str), followed */ - /* by the text of the string (string_start) */ - - /* First skip to a longword boundary */ - /* ??? Why a 4-byte boundary? On all machines? */ - /* NOTE: This works correctly even if size_t - is narrower than a pointer. - Do not try risky measures here to get another type to use! - Do not include stddef.h--it will fail! */ - if ((size_t) cp & 3) - cp += 4 - ((size_t) cp & 3); - - /* Now get the string. */ - str = (STRINGDEF *) (GENERIC_PTR) cp; - string_start = cp += sizeof (STRINGDEF); - - for (; *cp; cp++) /* skip the string */ - ; - - /* We need to macro expand the string here to ensure that the - proper definition environment is in place. If it were only - expanded when we find out it is needed, macros necessary for - its proper expansion might have had their definitions changed. */ - tmpbuf = expand_to_temp_buffer (string_start, cp++, 0, 0); - /* Lineno is already set in the precompiled file */ - str->contents = tmpbuf.buf; - str->len = tmpbuf.length; - str->writeflag = 0; - str->filename = name; - str->output_mark = outbuf.bufp - outbuf.buf; - - str->chain = 0; - *stringlist_tailp = str; - stringlist_tailp = &str->chain; - - /* Next comes a fourbyte number indicating the number of keys - for this string. */ - nkeys = *cp++; - nkeys = (nkeys << 8) | *cp++; - nkeys = (nkeys << 8) | *cp++; - nkeys = (nkeys << 8) | *cp++; - - /* If this number is -1, then the string is mandatory. */ - if (nkeys == -1) - str->writeflag = 1; - else - /* Otherwise, for each key, */ - for (; nkeys--; free (tmpbuf.buf), cp = endofthiskey + 1) { - KEYDEF *kp = (KEYDEF *) (GENERIC_PTR) cp; - HASHNODE *hp; - - /* It starts with a KEYDEF structure */ - cp += sizeof (KEYDEF); - - /* Find the end of the key. At the end of this for loop we - advance CP to the start of the next key using this variable. */ - endofthiskey = cp + strlen ((char *) cp); - kp->str = str; - - /* Expand the key, and enter it into the hash table. */ - tmpbuf = expand_to_temp_buffer (cp, endofthiskey, 0, 0); - tmpbuf.bufp = tmpbuf.buf; - - while (is_hor_space[*tmpbuf.bufp]) - tmpbuf.bufp++; - if (!is_idstart[*tmpbuf.bufp] - || tmpbuf.bufp == tmpbuf.buf + tmpbuf.length) { - str->writeflag = 1; - continue; - } - - hp = lookup (tmpbuf.bufp, -1, -1); - if (hp == NULL) { - kp->chain = 0; - install (tmpbuf.bufp, -1, T_PCSTRING, (char *) kp, -1); - } - else if (hp->type == T_PCSTRING) { - kp->chain = hp->value.keydef; - hp->value.keydef = kp; - } - else - str->writeflag = 1; - } - } - /* This output_line_directive serves to switch us back to the current - input file in case some of these strings get output (which will - result in line directives for the header file being output). */ - output_line_directive (&instack[indepth], op, 0, enter_file); -} - -/* Called from rescan when it hits a key for strings. Mark them all - used and clean up. */ - -static void -pcstring_used (hp) - HASHNODE *hp; -{ - KEYDEF *kp; - - for (kp = hp->value.keydef; kp; kp = kp->chain) - kp->str->writeflag = 1; - delete_macro (hp); -} - -/* Write the output, interspersing precompiled strings in their - appropriate places. */ - -static void -write_output () -{ - STRINGDEF *next_string; - U_CHAR *cur_buf_loc; - int line_directive_len = 80; - char *line_directive = xmalloc (line_directive_len); - int len; - - /* In each run through the loop, either cur_buf_loc == - next_string_loc, in which case we print a series of strings, or - it is less than next_string_loc, in which case we write some of - the buffer. */ - cur_buf_loc = outbuf.buf; - next_string = stringlist; - - while (cur_buf_loc < outbuf.bufp || next_string) { - if (next_string - && cur_buf_loc - outbuf.buf == next_string->output_mark) { - if (next_string->writeflag) { - len = 4 * strlen ((char *) next_string->filename) + 32; - while (len > line_directive_len) - line_directive = xrealloc (line_directive, - line_directive_len *= 2); - sprintf (line_directive, "\n# %d ", next_string->lineno); - strcpy (quote_string (line_directive + strlen (line_directive), - (char *) next_string->filename, - strlen ((char *) next_string->filename)), - "\n"); - safe_write (fileno (stdout), line_directive, strlen (line_directive)); - safe_write (fileno (stdout), - (char *) next_string->contents, next_string->len); - } - next_string = next_string->chain; - } - else { - len = (next_string - ? (next_string->output_mark - - (cur_buf_loc - outbuf.buf)) - : outbuf.bufp - cur_buf_loc); - - safe_write (fileno (stdout), (char *) cur_buf_loc, len); - cur_buf_loc += len; - } - } - free (line_directive); -} - -/* Pass a directive through to the output file. - BUF points to the contents of the directive, as a contiguous string. - LIMIT points to the first character past the end of the directive. - KEYWORD is the keyword-table entry for the directive. */ - -static void -pass_thru_directive (buf, limit, op, keyword) - U_CHAR *buf, *limit; - FILE_BUF *op; - struct directive *keyword; -{ - register unsigned keyword_length = keyword->length; - - check_expand (op, 1 + keyword_length + (limit - buf)); - *op->bufp++ = '#'; - bcopy (keyword->name, (char *) op->bufp, keyword_length); - op->bufp += keyword_length; - if (limit != buf && buf[0] != ' ') - *op->bufp++ = ' '; - bcopy ((char *) buf, (char *) op->bufp, limit - buf); - op->bufp += (limit - buf); -#if 0 - *op->bufp++ = '\n'; - /* Count the line we have just made in the output, - to get in sync properly. */ - op->lineno++; -#endif -} - -/* The arglist structure is built by do_define to tell - collect_definition where the argument names begin. That - is, for a define like "#define f(x,y,z) foo+x-bar*y", the arglist - would contain pointers to the strings x, y, and z. - Collect_definition would then build a DEFINITION node, - with reflist nodes pointing to the places x, y, and z had - appeared. So the arglist is just convenience data passed - between these two routines. It is not kept around after - the current #define has been processed and entered into the - hash table. */ - -struct arglist { - struct arglist *next; - U_CHAR *name; - int length; - int argno; - char rest_args; -}; - -/* Create a DEFINITION node from a #define directive. Arguments are - as for do_define. */ - -static MACRODEF -create_definition (buf, limit, op) - U_CHAR *buf, *limit; - FILE_BUF *op; -{ - U_CHAR *bp; /* temp ptr into input buffer */ - U_CHAR *symname; /* remember where symbol name starts */ - int sym_length; /* and how long it is */ - int line = instack[indepth].lineno; - char *file = instack[indepth].nominal_fname; - size_t file_len = instack[indepth].nominal_fname_len; - int rest_args = 0; - - DEFINITION *defn; - int arglengths = 0; /* Accumulate lengths of arg names - plus number of args. */ - MACRODEF mdef; - - bp = buf; - - while (is_hor_space[*bp]) - bp++; - - symname = bp; /* remember where it starts */ - sym_length = check_macro_name (bp, "macro"); - bp += sym_length; - - /* Lossage will occur if identifiers or control keywords are broken - across lines using backslash. This is not the right place to take - care of that. */ - - if (*bp == '(') { - struct arglist *arg_ptrs = NULL; - int argno = 0; - - bp++; /* skip '(' */ - SKIP_WHITE_SPACE (bp); - - /* Loop over macro argument names. */ - while (*bp != ')') { - struct arglist *temp; - - temp = (struct arglist *) alloca (sizeof (struct arglist)); - temp->name = bp; - temp->next = arg_ptrs; - temp->argno = argno++; - temp->rest_args = 0; - arg_ptrs = temp; - - if (rest_args) - pedwarn ("another parameter follows `%s'", - rest_extension); - - if (!is_idstart[*bp]) - { - if (c9x && limit - bp > (long) REST_EXTENSION_LENGTH - && bcmp (rest_extension, bp, REST_EXTENSION_LENGTH) == 0) - { - /* This is the ISO C 9x way to write macros with variable - number of arguments. */ - rest_args = 1; - temp->rest_args = 1; - } - else - pedwarn ("invalid character in macro parameter name"); - } - - /* Find the end of the arg name. */ - while (is_idchar[*bp]) { - bp++; - /* do we have a "special" rest-args extension here? */ - if (limit - bp > (long) REST_EXTENSION_LENGTH - && bcmp (rest_extension, bp, REST_EXTENSION_LENGTH) == 0) { - if (pedantic && !instack[indepth].system_header_p) - pedwarn ("ANSI C does not allow macro with variable arguments"); - rest_args = 1; - temp->rest_args = 1; - break; - } - } - if (bp == temp->name && rest_args == 1) - { - /* This is the ISO C 9x style. */ - temp->name = va_args_name; - temp->length = VA_ARGS_NAME_LENGTH; - } - else - temp->length = bp - temp->name; - if (rest_args == 1) - bp += REST_EXTENSION_LENGTH; - arglengths += temp->length + 2; - SKIP_WHITE_SPACE (bp); - if (temp->length == 0 || (*bp != ',' && *bp != ')')) { - error ("badly punctuated parameter list in `#define'"); - goto nope; - } - if (*bp == ',') { - bp++; - SKIP_WHITE_SPACE (bp); - /* A comma at this point can only be followed by an identifier. */ - if (!is_idstart[*bp] - && !(c9x && limit - bp > (long) REST_EXTENSION_LENGTH - && bcmp (rest_extension, bp, REST_EXTENSION_LENGTH) == 0)) { - error ("badly punctuated parameter list in `#define'"); - goto nope; - } - } - if (bp >= limit) { - error ("unterminated parameter list in `#define'"); - goto nope; - } - { - struct arglist *otemp; - - for (otemp = temp->next; otemp != NULL; otemp = otemp->next) - if (temp->length == otemp->length - && bcmp (temp->name, otemp->name, temp->length) == 0) - { - error ("duplicate argument name `%.*s' in `#define'", - temp->length, temp->name); - goto nope; - } - if (rest_args == 0 && temp->length == VA_ARGS_NAME_LENGTH - && bcmp (temp->name, va_args_name, VA_ARGS_NAME_LENGTH) == 0) - { - error ("\ -reserved name `%s' used as argument name in `#define'", va_args_name); - goto nope; - } - } - } - - ++bp; /* skip paren */ - SKIP_WHITE_SPACE (bp); - /* now everything from bp before limit is the definition. */ - defn = collect_expansion (bp, limit, argno, arg_ptrs); - defn->rest_args = rest_args; - - /* Now set defn->args.argnames to the result of concatenating - the argument names in reverse order - with comma-space between them. */ - defn->args.argnames = (U_CHAR *) xmalloc (arglengths + 1); - { - struct arglist *temp; - int i = 0; - for (temp = arg_ptrs; temp; temp = temp->next) { - bcopy (temp->name, &defn->args.argnames[i], temp->length); - i += temp->length; - if (temp->next != 0) { - defn->args.argnames[i++] = ','; - defn->args.argnames[i++] = ' '; - } - } - defn->args.argnames[i] = 0; - } - } else { - /* Simple expansion or empty definition. */ - - if (bp < limit) - { - if (is_hor_space[*bp]) { - bp++; - SKIP_WHITE_SPACE (bp); - } else if (sym_length) { - switch (*bp) { - case '!': case '"': case '#': case '%': case '&': case '\'': - case ')': case '*': case '+': case ',': case '-': case '.': - case '/': case ':': case ';': case '<': case '=': case '>': - case '?': case '[': case '\\': case ']': case '^': case '{': - case '|': case '}': case '~': - warning ("missing white space after `#define %.*s'", - sym_length, symname); - break; - - default: - pedwarn ("missing white space after `#define %.*s'", - sym_length, symname); - break; - } - } - } - /* Now everything from bp before limit is the definition. */ - defn = collect_expansion (bp, limit, -1, NULL_PTR); - defn->args.argnames = (U_CHAR *) ""; - } - - defn->line = line; - defn->file = file; - defn->file_len = file_len; - - /* OP is null if this is a predefinition */ - defn->predefined = !op; - mdef.defn = defn; - mdef.symnam = symname; - mdef.symlen = sym_length; - - return mdef; - - nope: - mdef.defn = 0; - return mdef; -} - -/* Process a #define directive. -BUF points to the contents of the #define directive, as a contiguous string. -LIMIT points to the first character past the end of the definition. -KEYWORD is the keyword-table entry for #define. */ - -static int -do_define (buf, limit, op, keyword) - U_CHAR *buf, *limit; - FILE_BUF *op; - struct directive *keyword; -{ - int hashcode; - MACRODEF mdef; - - /* If this is a precompiler run (with -pcp) pass thru #define directives. */ - if (pcp_outfile && op) - pass_thru_directive (buf, limit, op, keyword); - - mdef = create_definition (buf, limit, op); - if (mdef.defn == 0) - goto nope; - - hashcode = hashf (mdef.symnam, mdef.symlen, HASHSIZE); - - { - HASHNODE *hp; - if ((hp = lookup (mdef.symnam, mdef.symlen, hashcode)) != NULL) { - int ok = 0; - /* Redefining a precompiled key is ok. */ - if (hp->type == T_PCSTRING) - ok = 1; - /* Redefining a macro is ok if the definitions are the same. */ - else if (hp->type == T_MACRO) - ok = ! compare_defs (mdef.defn, hp->value.defn); - /* Redefining a constant is ok with -D. */ - else if (hp->type == T_CONST) - ok = ! done_initializing; - /* Print the warning if it's not ok. */ - if (!ok) { - /* If we are passing through #define and #undef directives, do - that for this re-definition now. */ - if (debug_output && op) - pass_thru_directive (buf, limit, op, keyword); - -/* CYGNUS LOCAL chill */ - if (!chill || strcmp (mdef.defn->file, "*Initialization*")) -/* END CYGNUS LOCAL chill */ - pedwarn ("`%.*s' redefined", mdef.symlen, mdef.symnam); - if (hp->type == T_MACRO) - pedwarn_with_file_and_line (hp->value.defn->file, - hp->value.defn->file_len, - hp->value.defn->line, - "this is the location of the previous definition"); - } - /* Replace the old definition. */ - hp->type = T_MACRO; - hp->value.defn = mdef.defn; - } else { - /* If we are passing through #define and #undef directives, do - that for this new definition now. */ - if (debug_output && op) - pass_thru_directive (buf, limit, op, keyword); - install (mdef.symnam, mdef.symlen, T_MACRO, - (char *) mdef.defn, hashcode); - } - } - - return 0; - -nope: - - return 1; -} - -/* Check a purported macro name SYMNAME, and yield its length. - USAGE is the kind of name this is intended for. */ - -static int -check_macro_name (symname, usage) - U_CHAR *symname; - char *usage; -{ - U_CHAR *p; - int sym_length; - - for (p = symname; is_idchar[*p]; p++) - ; - sym_length = p - symname; - if (sym_length == 0 - || (sym_length == 1 && *symname == 'L' && (*p == '\'' || *p == '"'))) - error ("invalid %s name", usage); - else if (!is_idstart[*symname] - || (sym_length == 7 && ! bcmp (symname, "defined", 7))) - error ("invalid %s name `%.*s'", usage, sym_length, symname); - return sym_length; -} - -/* Return zero if two DEFINITIONs are isomorphic. */ - -static int -compare_defs (d1, d2) - DEFINITION *d1, *d2; -{ - register struct reflist *a1, *a2; - register U_CHAR *p1 = d1->expansion; - register U_CHAR *p2 = d2->expansion; - int first = 1; - - if (d1->nargs != d2->nargs) - return 1; - if (pedantic - && strcmp ((char *)d1->args.argnames, (char *)d2->args.argnames)) - return 1; - for (a1 = d1->pattern, a2 = d2->pattern; a1 && a2; - a1 = a1->next, a2 = a2->next) { - if (!((a1->nchars == a2->nchars && ! bcmp (p1, p2, a1->nchars)) - || ! comp_def_part (first, p1, a1->nchars, p2, a2->nchars, 0)) - || a1->argno != a2->argno - || a1->stringify != a2->stringify - || a1->raw_before != a2->raw_before - || a1->raw_after != a2->raw_after) - return 1; - first = 0; - p1 += a1->nchars; - p2 += a2->nchars; - } - if (a1 != a2) - return 1; - if (comp_def_part (first, p1, d1->length - (p1 - d1->expansion), - p2, d2->length - (p2 - d2->expansion), 1)) - return 1; - return 0; -} - -/* Return 1 if two parts of two macro definitions are effectively different. - One of the parts starts at BEG1 and has LEN1 chars; - the other has LEN2 chars at BEG2. - Any sequence of whitespace matches any other sequence of whitespace. - FIRST means these parts are the first of a macro definition; - so ignore leading whitespace entirely. - LAST means these parts are the last of a macro definition; - so ignore trailing whitespace entirely. */ - -static int -comp_def_part (first, beg1, len1, beg2, len2, last) - int first; - U_CHAR *beg1, *beg2; - int len1, len2; - int last; -{ - register U_CHAR *end1 = beg1 + len1; - register U_CHAR *end2 = beg2 + len2; - if (first) { - while (beg1 != end1 && is_space[*beg1]) beg1++; - while (beg2 != end2 && is_space[*beg2]) beg2++; - } - if (last) { - while (beg1 != end1 && is_space[end1[-1]]) end1--; - while (beg2 != end2 && is_space[end2[-1]]) end2--; - } - while (beg1 != end1 && beg2 != end2) { - if (is_space[*beg1] && is_space[*beg2]) { - while (beg1 != end1 && is_space[*beg1]) beg1++; - while (beg2 != end2 && is_space[*beg2]) beg2++; - } else if (*beg1 == *beg2) { - beg1++; beg2++; - } else break; - } - return (beg1 != end1) || (beg2 != end2); -} - -/* Read a replacement list for a macro with parameters. - Build the DEFINITION structure. - Reads characters of text starting at BUF until END. - ARGLIST specifies the formal parameters to look for - in the text of the definition; NARGS is the number of args - in that list, or -1 for a macro name that wants no argument list. - MACRONAME is the macro name itself (so we can avoid recursive expansion) - and NAMELEN is its length in characters. - -Note that comments, backslash-newlines, and leading white space -have already been deleted from the argument. */ - -/* If there is no trailing whitespace, a Newline Space is added at the end - to prevent concatenation that would be contrary to the standard. */ - -static DEFINITION * -collect_expansion (buf, end, nargs, arglist) - U_CHAR *buf, *end; - int nargs; - struct arglist *arglist; -{ - DEFINITION *defn; - register U_CHAR *p, *limit, *lastp, *exp_p; - struct reflist *endpat = NULL; - /* Pointer to first nonspace after last ## seen. */ - U_CHAR *concat = 0; - /* Pointer to first nonspace after last single-# seen. */ - U_CHAR *stringify = 0; - /* How those tokens were spelled. */ - enum sharp_token_type concat_sharp_token_type = NO_SHARP_TOKEN; - enum sharp_token_type stringify_sharp_token_type = NO_SHARP_TOKEN; - int maxsize; - int expected_delimiter = '\0'; - - /* Scan thru the replacement list, ignoring comments and quoted - strings, picking up on the macro calls. It does a linear search - thru the arg list on every potential symbol. Profiling might say - that something smarter should happen. */ - - if (end < buf) - abort (); - - /* Find the beginning of the trailing whitespace. */ - limit = end; - p = buf; - while (p < limit && is_space[limit[-1]]) limit--; - - /* Allocate space for the text in the macro definition. - Each input char may or may not need 1 byte, - so this is an upper bound. - The extra 3 are for invented trailing newline-marker and final null. */ - maxsize = (sizeof (DEFINITION) - + (limit - p) + 3); - defn = (DEFINITION *) xcalloc (1, maxsize); - - defn->nargs = nargs; - exp_p = defn->expansion = (U_CHAR *) defn + sizeof (DEFINITION); - lastp = exp_p; - - if (p[0] == '#' - ? p[1] == '#' - : p[0] == '%' && p[1] == ':' && p[2] == '%' && p[3] == ':') { - error ("`##' at start of macro definition"); - p += p[0] == '#' ? 2 : 4; - } - - /* Process the main body of the definition. */ - while (p < limit) { - int skipped_arg = 0; - register U_CHAR c = *p++; - - *exp_p++ = c; - - if (!traditional) { - switch (c) { - case '\'': - case '\"': - if (expected_delimiter != '\0') { - if (c == expected_delimiter) - expected_delimiter = '\0'; - } else - expected_delimiter = c; - break; - - case '\\': - if (p < limit && expected_delimiter) { - /* In a string, backslash goes through - and makes next char ordinary. */ - *exp_p++ = *p++; - } - break; - - case '%': - if (!expected_delimiter && *p == ':') { - /* %: is not a digraph if preceded by an odd number of '<'s. */ - U_CHAR *p0 = p - 1; - while (buf < p0 && p0[-1] == '<') - p0--; - if ((p - p0) & 1) { - /* Treat %:%: as ## and %: as #. */ - if (p[1] == '%' && p[2] == ':') { - p += 2; - goto sharp_sharp_token; - } - if (nargs >= 0) { - p++; - goto sharp_token; - } - } - } - break; - - case '#': - /* # is ordinary inside a string. */ - if (expected_delimiter) - break; - if (*p == '#') { - sharp_sharp_token: - /* ##: concatenate preceding and following tokens. */ - /* Take out the first #, discard preceding whitespace. */ - exp_p--; - while (exp_p > lastp && is_hor_space[exp_p[-1]]) - --exp_p; - /* Skip the second #. */ - p++; - concat_sharp_token_type = c; - if (is_hor_space[*p]) { - concat_sharp_token_type = c + 1; - p++; - SKIP_WHITE_SPACE (p); - } - concat = p; - if (p == limit) - error ("`##' at end of macro definition"); - } else if (nargs >= 0) { - /* Single #: stringify following argument ref. - Don't leave the # in the expansion. */ - sharp_token: - exp_p--; - stringify_sharp_token_type = c; - if (is_hor_space[*p]) { - stringify_sharp_token_type = c + 1; - p++; - SKIP_WHITE_SPACE (p); - } - if (! is_idstart[*p] || nargs == 0 - || (*p == 'L' && (p[1] == '\'' || p[1] == '"'))) - error ("`#' operator is not followed by a macro argument name"); - else - stringify = p; - } - break; - } - } else { - /* In -traditional mode, recognize arguments inside strings and - character constants, and ignore special properties of #. - Arguments inside strings are considered "stringified", but no - extra quote marks are supplied. */ - switch (c) { - case '\'': - case '\"': - if (expected_delimiter != '\0') { - if (c == expected_delimiter) - expected_delimiter = '\0'; - } else - expected_delimiter = c; - break; - - case '\\': - /* Backslash quotes delimiters and itself, but not macro args. */ - if (expected_delimiter != 0 && p < limit - && (*p == expected_delimiter || *p == '\\')) { - *exp_p++ = *p++; - continue; - } - break; - - case '/': - if (expected_delimiter != '\0') /* No comments inside strings. */ - break; - if (*p == '*') { - /* If we find a comment that wasn't removed by handle_directive, - this must be -traditional. So replace the comment with - nothing at all. */ - exp_p--; - while (++p < limit) { - if (p[0] == '*' && p[1] == '/') { - p += 2; - break; - } - } -#if 0 - /* Mark this as a concatenation-point, as if it had been ##. */ - concat = p; -#endif - } - break; - } - } - -#ifdef MULTIBYTE_CHARS -/* CYGNUS LOCAL chill */ - if (! chill) -/* END CYGNUS LOCAL chill */ - { - /* Handle multibyte characters inside string and character literals. */ - if (expected_delimiter != '\0') - { - int length; - --p; - length = local_mblen (p, limit - p); - if (length > 1) - { - --exp_p; - bcopy (p, exp_p, length); - p += length; - exp_p += length; - continue; - } - ++p; - } - } -#endif - - /* Handle the start of a symbol. */ - if (is_idchar[c] && nargs > 0) { - U_CHAR *id_beg = p - 1; - int id_len; - - --exp_p; - while (p != limit && is_idchar[*p]) p++; - id_len = p - id_beg; - - if (is_idstart[c] - && ! (id_len == 1 && c == 'L' && (*p == '\'' || *p == '"'))) { - register struct arglist *arg; - - for (arg = arglist; arg != NULL; arg = arg->next) { - struct reflist *tpat; - - if (arg->name[0] == c - && arg->length == id_len - && bcmp (arg->name, id_beg, id_len) == 0) { - enum sharp_token_type tpat_stringify; - if (expected_delimiter) { - if (warn_stringify) { - if (traditional) { - warning ("macro argument `%.*s' is stringified.", - id_len, arg->name); - } else { - warning ("macro arg `%.*s' would be stringified with -traditional.", - id_len, arg->name); - } - } - /* If ANSI, don't actually substitute inside a string. */ - if (!traditional) - break; - tpat_stringify = SHARP_TOKEN; - } else { - tpat_stringify - = (stringify == id_beg - ? stringify_sharp_token_type : NO_SHARP_TOKEN); - } - /* make a pat node for this arg and append it to the end of - the pat list */ - tpat = (struct reflist *) xmalloc (sizeof (struct reflist)); - tpat->next = NULL; - tpat->raw_before - = concat == id_beg ? concat_sharp_token_type : NO_SHARP_TOKEN; - tpat->raw_after = NO_SHARP_TOKEN; - tpat->rest_args = arg->rest_args; - tpat->stringify = tpat_stringify; - - if (endpat == NULL) - defn->pattern = tpat; - else - endpat->next = tpat; - endpat = tpat; - - tpat->argno = arg->argno; - tpat->nchars = exp_p - lastp; - { - register U_CHAR *p1 = p; - SKIP_WHITE_SPACE (p1); - if (p1[0]=='#' - ? p1[1]=='#' - : p1[0]=='%' && p1[1]==':' && p1[2]=='%' && p1[3]==':') - tpat->raw_after = p1[0] + (p != p1); - } - lastp = exp_p; /* place to start copying from next time */ - skipped_arg = 1; - break; - } - } - } - - /* If this was not a macro arg, copy it into the expansion. */ - if (! skipped_arg) { - register U_CHAR *lim1 = p; - p = id_beg; - while (p != lim1) - *exp_p++ = *p++; - if (stringify == id_beg) - error ("`#' operator should be followed by a macro argument name"); - } - } - } - - if (!traditional && expected_delimiter == 0) { - /* If ANSI, put in a newline-space marker to prevent token pasting. - But not if "inside a string" (which in ANSI mode happens only for - -D option). */ - *exp_p++ = '\n'; - *exp_p++ = ' '; - } - - *exp_p = '\0'; - - defn->length = exp_p - defn->expansion; - - /* Crash now if we overrun the allocated size. */ - if (defn->length + 1 > maxsize) - abort (); - -#if 0 -/* This isn't worth the time it takes. */ - /* give back excess storage */ - defn->expansion = (U_CHAR *) xrealloc (defn->expansion, defn->length + 1); -#endif - - return defn; -} - -static int -do_assert (buf, limit, op, keyword) - U_CHAR *buf, *limit; - FILE_BUF *op ATTRIBUTE_UNUSED; - struct directive *keyword ATTRIBUTE_UNUSED; -{ - U_CHAR *bp; /* temp ptr into input buffer */ - U_CHAR *symname; /* remember where symbol name starts */ - int sym_length; /* and how long it is */ - struct arglist *tokens = NULL; - - if (pedantic && done_initializing && !instack[indepth].system_header_p) - pedwarn ("ANSI C does not allow `#assert'"); - - bp = buf; - - while (is_hor_space[*bp]) - bp++; - - symname = bp; /* remember where it starts */ - sym_length = check_macro_name (bp, "assertion"); - bp += sym_length; - /* #define doesn't do this, but we should. */ - SKIP_WHITE_SPACE (bp); - - /* Lossage will occur if identifiers or control tokens are broken - across lines using backslash. This is not the right place to take - care of that. */ - - if (*bp != '(') { - error ("missing token-sequence in `#assert'"); - return 1; - } - - { - int error_flag = 0; - - bp++; /* skip '(' */ - SKIP_WHITE_SPACE (bp); - - tokens = read_token_list (&bp, limit, &error_flag); - if (error_flag) - return 1; - if (tokens == 0) { - error ("empty token-sequence in `#assert'"); - return 1; - } - - ++bp; /* skip paren */ - SKIP_WHITE_SPACE (bp); - } - - /* If this name isn't already an assertion name, make it one. - Error if it was already in use in some other way. */ - - { - ASSERTION_HASHNODE *hp; - int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE); - struct tokenlist_list *value - = (struct tokenlist_list *) xmalloc (sizeof (struct tokenlist_list)); - - hp = assertion_lookup (symname, sym_length, hashcode); - if (hp == NULL) { - if (sym_length == 7 && ! bcmp (symname, "defined", 7)) - error ("`defined' redefined as assertion"); - hp = assertion_install (symname, sym_length, hashcode); - } - - /* Add the spec'd token-sequence to the list of such. */ - value->tokens = tokens; - value->next = hp->value; - hp->value = value; - } - - return 0; -} - -static int -do_unassert (buf, limit, op, keyword) - U_CHAR *buf, *limit; - FILE_BUF *op ATTRIBUTE_UNUSED; - struct directive *keyword ATTRIBUTE_UNUSED; -{ - U_CHAR *bp; /* temp ptr into input buffer */ - U_CHAR *symname; /* remember where symbol name starts */ - int sym_length; /* and how long it is */ - - struct arglist *tokens = NULL; - int tokens_specified = 0; - - if (pedantic && done_initializing && !instack[indepth].system_header_p) - pedwarn ("ANSI C does not allow `#unassert'"); - - bp = buf; - - while (is_hor_space[*bp]) - bp++; - - symname = bp; /* remember where it starts */ - sym_length = check_macro_name (bp, "assertion"); - bp += sym_length; - /* #define doesn't do this, but we should. */ - SKIP_WHITE_SPACE (bp); - - /* Lossage will occur if identifiers or control tokens are broken - across lines using backslash. This is not the right place to take - care of that. */ - - if (*bp == '(') { - int error_flag = 0; - - bp++; /* skip '(' */ - SKIP_WHITE_SPACE (bp); - - tokens = read_token_list (&bp, limit, &error_flag); - if (error_flag) - return 1; - if (tokens == 0) { - error ("empty token list in `#unassert'"); - return 1; - } - - tokens_specified = 1; - - ++bp; /* skip paren */ - SKIP_WHITE_SPACE (bp); - } - - { - ASSERTION_HASHNODE *hp; - int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE); - struct tokenlist_list *tail, *prev; - - hp = assertion_lookup (symname, sym_length, hashcode); - if (hp == NULL) - return 1; - - /* If no token list was specified, then eliminate this assertion - entirely. */ - if (! tokens_specified) { - struct tokenlist_list *next; - for (tail = hp->value; tail; tail = next) { - next = tail->next; - free_token_list (tail->tokens); - free (tail); - } - delete_assertion (hp); - } else { - /* If a list of tokens was given, then delete any matching list. */ - - tail = hp->value; - prev = 0; - while (tail) { - struct tokenlist_list *next = tail->next; - if (compare_token_lists (tail->tokens, tokens)) { - if (prev) - prev->next = next; - else - hp->value = tail->next; - free_token_list (tail->tokens); - free (tail); - } else { - prev = tail; - } - tail = next; - } - } - } - - return 0; -} - -/* Test whether there is an assertion named NAME - and optionally whether it has an asserted token list TOKENS. - NAME is not null terminated; its length is SYM_LENGTH. - If TOKENS_SPECIFIED is 0, then don't check for any token list. */ - -int -check_assertion (name, sym_length, tokens_specified, tokens) - U_CHAR *name; - int sym_length; - int tokens_specified; - struct arglist *tokens; -{ - ASSERTION_HASHNODE *hp; - int hashcode = hashf (name, sym_length, ASSERTION_HASHSIZE); - - if (pedantic && !instack[indepth].system_header_p) - pedwarn ("ANSI C does not allow testing assertions"); - - hp = assertion_lookup (name, sym_length, hashcode); - if (hp == NULL) - /* It is not an assertion; just return false. */ - return 0; - - /* If no token list was specified, then value is 1. */ - if (! tokens_specified) - return 1; - - { - struct tokenlist_list *tail; - - tail = hp->value; - - /* If a list of tokens was given, - then succeed if the assertion records a matching list. */ - - while (tail) { - if (compare_token_lists (tail->tokens, tokens)) - return 1; - tail = tail->next; - } - - /* Fail if the assertion has no matching list. */ - return 0; - } -} - -/* Compare two lists of tokens for equality including order of tokens. */ - -static int -compare_token_lists (l1, l2) - struct arglist *l1, *l2; -{ - while (l1 && l2) { - if (l1->length != l2->length) - return 0; - if (bcmp (l1->name, l2->name, l1->length)) - return 0; - l1 = l1->next; - l2 = l2->next; - } - - /* Succeed if both lists end at the same time. */ - return l1 == l2; -} - -/* Read a space-separated list of tokens ending in a close parenthesis. - Return a list of strings, in the order they were written. - (In case of error, return 0 and store -1 in *ERROR_FLAG.) - Parse the text starting at *BPP, and update *BPP. - Don't parse beyond LIMIT. */ - -static struct arglist * -read_token_list (bpp, limit, error_flag) - U_CHAR **bpp; - U_CHAR *limit; - int *error_flag; -{ - struct arglist *token_ptrs = 0; - U_CHAR *bp = *bpp; - int depth = 1; - - *error_flag = 0; - - /* Loop over the assertion value tokens. */ - while (depth > 0) { - struct arglist *temp; - int eofp = 0; - U_CHAR *beg = bp; - - /* Find the end of the token. */ - if (*bp == '(') { - bp++; - depth++; - } else if (*bp == ')') { - depth--; - if (depth == 0) - break; - bp++; - } else if (*bp == '"' || *bp == '\'') - bp = skip_quoted_string (bp, limit, 0, NULL_PTR, NULL_PTR, &eofp); - else - while (! is_hor_space[*bp] && *bp != '(' && *bp != ')' - && *bp != '"' && *bp != '\'' && bp != limit) - bp++; - - temp = (struct arglist *) xmalloc (sizeof (struct arglist)); - temp->name = (U_CHAR *) xmalloc (bp - beg + 1); - bcopy ((char *) beg, (char *) temp->name, bp - beg); - temp->name[bp - beg] = 0; - temp->next = token_ptrs; - token_ptrs = temp; - temp->length = bp - beg; - - SKIP_WHITE_SPACE (bp); - - if (bp >= limit) { - error ("unterminated token sequence in `#assert' or `#unassert'"); - *error_flag = -1; - return 0; - } - } - *bpp = bp; - - /* We accumulated the names in reverse order. - Now reverse them to get the proper order. */ - { - register struct arglist *prev = 0, *this, *next; - for (this = token_ptrs; this; this = next) { - next = this->next; - this->next = prev; - prev = this; - } - return prev; - } -} - -static void -free_token_list (tokens) - struct arglist *tokens; -{ - while (tokens) { - struct arglist *next = tokens->next; - free (tokens->name); - free (tokens); - tokens = next; - } -} - -/* Install a name in the assertion hash table. - - If LEN is >= 0, it is the length of the name. - Otherwise, compute the length by scanning the entire name. - - If HASH is >= 0, it is the precomputed hash code. - Otherwise, compute the hash code. */ - -static ASSERTION_HASHNODE * -assertion_install (name, len, hash) - U_CHAR *name; - int len; - int hash; -{ - register ASSERTION_HASHNODE *hp; - register int i, bucket; - register U_CHAR *p, *q; - - i = sizeof (ASSERTION_HASHNODE) + len + 1; - hp = (ASSERTION_HASHNODE *) xmalloc (i); - bucket = hash; - hp->bucket_hdr = &assertion_hashtab[bucket]; - hp->next = assertion_hashtab[bucket]; - assertion_hashtab[bucket] = hp; - hp->prev = NULL; - if (hp->next != NULL) - hp->next->prev = hp; - hp->length = len; - hp->value = 0; - hp->name = ((U_CHAR *) hp) + sizeof (ASSERTION_HASHNODE); - p = hp->name; - q = name; - for (i = 0; i < len; i++) - *p++ = *q++; - hp->name[len] = 0; - return hp; -} - -/* Find the most recent hash node for name "name" (ending with first - non-identifier char) installed by install - - If LEN is >= 0, it is the length of the name. - Otherwise, compute the length by scanning the entire name. - - If HASH is >= 0, it is the precomputed hash code. - Otherwise, compute the hash code. */ - -static ASSERTION_HASHNODE * -assertion_lookup (name, len, hash) - U_CHAR *name; - int len; - int hash; -{ - register ASSERTION_HASHNODE *bucket; - - bucket = assertion_hashtab[hash]; - while (bucket) { - if (bucket->length == len && bcmp (bucket->name, name, len) == 0) - return bucket; - bucket = bucket->next; - } - return NULL; -} - -static void -delete_assertion (hp) - ASSERTION_HASHNODE *hp; -{ - - if (hp->prev != NULL) - hp->prev->next = hp->next; - if (hp->next != NULL) - hp->next->prev = hp->prev; - - /* Make sure that the bucket chain header that the deleted guy was - on points to the right thing afterwards. */ - if (hp == *hp->bucket_hdr) - *hp->bucket_hdr = hp->next; - - free (hp); -} - -/* - * interpret #line directive. Remembers previously seen fnames - * in its very own hash table. - */ -#define FNAME_HASHSIZE 37 - -static int -do_line (buf, limit, op, keyword) - U_CHAR *buf, *limit; - FILE_BUF *op; - struct directive *keyword ATTRIBUTE_UNUSED; -{ - register U_CHAR *bp; - FILE_BUF *ip = &instack[indepth]; - FILE_BUF tem; - int new_lineno; - enum file_change_code file_change = same_file; - - /* Expand any macros. */ - tem = expand_to_temp_buffer (buf, limit, 0, 0); - - /* Point to macroexpanded line, which is null-terminated now. */ - bp = tem.buf; - SKIP_WHITE_SPACE (bp); - - if (!ISDIGIT (*bp)) { - error ("invalid format `#line' directive"); - return 0; - } - - /* The Newline at the end of this line remains to be processed. - To put the next line at the specified line number, - we must store a line number now that is one less. */ - new_lineno = atoi ((char *) bp) - 1; - - /* NEW_LINENO is one less than the actual line number here. */ - if (pedantic && new_lineno < 0) - pedwarn ("line number out of range in `#line' directive"); - - /* skip over the line number. */ - while (ISDIGIT (*bp)) - bp++; - -#if 0 /* #line 10"foo.c" is supposed to be allowed. */ - if (*bp && !is_space[*bp]) { - error ("invalid format `#line' directive"); - return; - } -#endif - - SKIP_WHITE_SPACE (bp); - - if (*bp == '\"') { - static HASHNODE *fname_table[FNAME_HASHSIZE]; - HASHNODE *hp, **hash_bucket; - U_CHAR *fname, *p; - int fname_length; - - fname = ++bp; - - /* Turn the file name, which is a character string literal, - into a null-terminated string. Do this in place. */ - p = bp; - for (;;) - switch ((*p++ = *bp++)) { - case '\0': - error ("invalid format `#line' directive"); - return 0; - - case '\\': - if (! ignore_escape_flag) - { - char *bpc = (char *) bp; - HOST_WIDE_INT c = parse_escape (&bpc, (HOST_WIDE_INT) (U_CHAR) (-1)); - bp = (U_CHAR *) bpc; - if (c < 0) - p--; - else - p[-1] = c; - } - break; - - case '\"': - *--p = 0; - goto fname_done; - } - fname_done: - fname_length = p - fname; - - SKIP_WHITE_SPACE (bp); - if (*bp) { - if (pedantic) - pedwarn ("garbage at end of `#line' directive"); - if (*bp == '1') - file_change = enter_file; - else if (*bp == '2') - file_change = leave_file; - else if (*bp == '3') - ip->system_header_p = 1; - else if (*bp == '4') - ip->system_header_p = 2; - else { - error ("invalid format `#line' directive"); - return 0; - } - - bp++; - SKIP_WHITE_SPACE (bp); - if (*bp == '3') { - ip->system_header_p = 1; - bp++; - SKIP_WHITE_SPACE (bp); - } - if (*bp == '4') { - ip->system_header_p = 2; - bp++; - SKIP_WHITE_SPACE (bp); - } - if (*bp) { - error ("invalid format `#line' directive"); - return 0; - } - } - - hash_bucket = &fname_table[hashf (fname, fname_length, FNAME_HASHSIZE)]; - for (hp = *hash_bucket; hp != NULL; hp = hp->next) - if (hp->length == fname_length && - bcmp (hp->value.cpval, fname, fname_length) == 0) { - ip->nominal_fname = hp->value.cpval; - ip->nominal_fname_len = fname_length; - break; - } - if (hp == 0) { - /* Didn't find it; cons up a new one. */ - hp = (HASHNODE *) xcalloc (1, sizeof (HASHNODE) + fname_length + 1); - hp->next = *hash_bucket; - *hash_bucket = hp; - - ip->nominal_fname = hp->value.cpval = ((char *) hp) + sizeof (HASHNODE); - ip->nominal_fname_len = hp->length = fname_length; - bcopy (fname, hp->value.cpval, fname_length + 1); - } - } else if (*bp) { - error ("invalid format `#line' directive"); - return 0; - } - - ip->lineno = new_lineno; - output_line_directive (ip, op, 0, file_change); - check_expand (op, ip->length - (ip->bufp - ip->buf)); - return 0; -} - -/* Remove the definition of a symbol from the symbol table. - according to un*x /lib/cpp, it is not an error to undef - something that has no definitions, so it isn't one here either. */ - -static int -do_undef (buf, limit, op, keyword) - U_CHAR *buf, *limit; - FILE_BUF *op; - struct directive *keyword; -{ - int sym_length; - HASHNODE *hp; - U_CHAR *orig_buf = buf; - - /* If this is a precompiler run (with -pcp) pass thru #undef directives. */ - if (pcp_outfile && op) - pass_thru_directive (buf, limit, op, keyword); - - SKIP_WHITE_SPACE (buf); - sym_length = check_macro_name (buf, "macro"); - - while ((hp = lookup (buf, sym_length, -1)) != NULL) { - /* If we are generating additional info for debugging (with -g) we - need to pass through all effective #undef directives. */ - if (debug_output && op) - pass_thru_directive (orig_buf, limit, op, keyword); - if (hp->type != T_MACRO) - warning ("undefining `%s'", hp->name); - delete_macro (hp); - } - - if (pedantic) { - buf += sym_length; - SKIP_WHITE_SPACE (buf); - if (buf != limit) - pedwarn ("garbage after `#undef' directive"); - } - return 0; -} - -/* Report an error detected by the program we are processing. - Use the text of the line in the error message. - (We use error because it prints the filename & line#.) */ - -static int -do_error (buf, limit, op, keyword) - U_CHAR *buf, *limit; - FILE_BUF *op ATTRIBUTE_UNUSED; - struct directive *keyword ATTRIBUTE_UNUSED; -{ - int length = limit - buf; - U_CHAR *copy = (U_CHAR *) alloca (length + 1); - bcopy ((char *) buf, (char *) copy, length); - copy[length] = 0; - SKIP_WHITE_SPACE (copy); - error ("#error %s", copy); - return 0; -} - -/* Report a warning detected by the program we are processing. - Use the text of the line in the warning message, then continue. - (We use error because it prints the filename & line#.) */ - -static int -do_warning (buf, limit, op, keyword) - U_CHAR *buf, *limit; - FILE_BUF *op ATTRIBUTE_UNUSED; - struct directive *keyword ATTRIBUTE_UNUSED; -{ - int length = limit - buf; - U_CHAR *copy = (U_CHAR *) alloca (length + 1); - bcopy ((char *) buf, (char *) copy, length); - copy[length] = 0; - SKIP_WHITE_SPACE (copy); - - if (pedantic && !instack[indepth].system_header_p) - pedwarn ("ANSI C does not allow `#warning'"); - - /* Use `pedwarn' not `warning', because #warning isn't in the C Standard; - if -pedantic-errors is given, #warning should cause an error. */ - pedwarn ("#warning %s", copy); - return 0; -} - -/* Remember the name of the current file being read from so that we can - avoid ever including it again. */ - -static void -do_once () -{ - int i; - - for (i = indepth; i >= 0; i--) - if (instack[i].inc) { - record_control_macro (instack[i].inc, (U_CHAR *) ""); - break; - } -} - -/* Report program identification. */ - -static int -do_ident (buf, limit, op, keyword) - U_CHAR *buf, *limit; - FILE_BUF *op; - struct directive *keyword ATTRIBUTE_UNUSED; -{ - FILE_BUF trybuf; - int len; - - /* Allow #ident in system headers, since that's not user's fault. */ - if (pedantic && !instack[indepth].system_header_p) - pedwarn ("ANSI C does not allow `#ident'"); - - trybuf = expand_to_temp_buffer (buf, limit, 0, 0); - buf = trybuf.buf; - len = trybuf.bufp - buf; - - /* Output expanded directive. */ - check_expand (op, 7 + len); - bcopy ("#ident ", (char *) op->bufp, 7); - op->bufp += 7; - bcopy ((char *) buf, (char *) op->bufp, len); - op->bufp += len; - - free (buf); - return 0; -} - -/* #pragma and its argument line have already been copied to the output file. - Just check for some recognized pragmas that need validation here. */ - -static int -do_pragma (buf, limit, op, keyword) - U_CHAR *buf, *limit ATTRIBUTE_UNUSED; - FILE_BUF *op ATTRIBUTE_UNUSED; - struct directive *keyword ATTRIBUTE_UNUSED; -{ - SKIP_WHITE_SPACE (buf); - if (!strncmp ((char *) buf, "once", 4)) { - /* Allow #pragma once in system headers, since that's not the user's - fault. */ - if (!instack[indepth].system_header_p) - warning ("`#pragma once' is obsolete"); - do_once (); - } - - if (!strncmp ((char *) buf, "implementation", 14)) { - /* Be quiet about `#pragma implementation' for a file only if it hasn't - been included yet. */ - - int h; - U_CHAR *p = buf + 14, *fname; - SKIP_WHITE_SPACE (p); - if (*p != '\"') - return 0; - - fname = p + 1; - if ((p = (U_CHAR *) index ((char *) fname, '\"'))) - *p = '\0'; - - for (h = 0; h < INCLUDE_HASHSIZE; h++) { - struct include_file *inc; - for (inc = include_hashtab[h]; inc; inc = inc->next) { - if (!strcmp (base_name (inc->fname), (char *) fname)) { - warning ("`#pragma implementation' for \"%s\" appears after its #include",fname); - return 0; - } - } - } - } - return 0; -} - -#if 0 -/* This was a fun hack, but #pragma seems to start to be useful. - By failing to recognize it, we pass it through unchanged to cc1. */ - -/* The behavior of the #pragma directive is implementation defined. - this implementation defines it as follows. */ - -static int -do_pragma () -{ - close (0); - if (open ("/dev/tty", O_RDONLY, 0666) != 0) - goto nope; - close (1); - if (open ("/dev/tty", O_WRONLY, 0666) != 1) - goto nope; - execl ("/usr/games/hack", "#pragma", 0); - execl ("/usr/games/rogue", "#pragma", 0); - execl ("/usr/new/emacs", "-f", "hanoi", "9", "-kill", 0); - execl ("/usr/local/emacs", "-f", "hanoi", "9", "-kill", 0); -nope: - fatal ("You are in a maze of twisty compiler features, all different"); -} -#endif - -#ifdef SCCS_DIRECTIVE - -/* Just ignore #sccs, on systems where we define it at all. */ - -static int -do_sccs (buf, limit, op, keyword) - U_CHAR *buf ATTRIBUTE_UNUSED, *limit ATTRIBUTE_UNUSED; - FILE_BUF *op ATTRIBUTE_UNUSED; - struct directive *keyword ATTRIBUTE_UNUSED; -{ - if (pedantic) - pedwarn ("ANSI C does not allow `#sccs'"); - return 0; -} - -#endif /* defined (SCCS_DIRECTIVE) */ - -/* Handle #if directive by - 1) inserting special `defined' keyword into the hash table - that gets turned into 0 or 1 by special_symbol (thus, - if the luser has a symbol called `defined' already, it won't - work inside the #if directive) - 2) rescan the input into a temporary output buffer - 3) pass the output buffer to the yacc parser and collect a value - 4) clean up the mess left from steps 1 and 2. - 5) call conditional_skip to skip til the next #endif (etc.), - or not, depending on the value from step 3. */ - -static int -do_if (buf, limit, op, keyword) - U_CHAR *buf, *limit; - FILE_BUF *op; - struct directive *keyword ATTRIBUTE_UNUSED; -{ - HOST_WIDE_INT value; - FILE_BUF *ip = &instack[indepth]; - - value = eval_if_expression (buf, limit - buf); - conditional_skip (ip, value == 0, T_IF, NULL_PTR, op); - return 0; -} - -/* Handle a #elif directive by not changing if_stack either. - see the comment above do_else. */ - -static int -do_elif (buf, limit, op, keyword) - U_CHAR *buf, *limit; - FILE_BUF *op; - struct directive *keyword ATTRIBUTE_UNUSED; -{ - HOST_WIDE_INT value; - FILE_BUF *ip = &instack[indepth]; - - if (if_stack == instack[indepth].if_stack) { - error ("`#elif' not within a conditional"); - return 0; - } else { - if (if_stack->type != T_IF && if_stack->type != T_ELIF) { - error ("`#elif' after `#else'"); - fprintf (stderr, " (matches line %d", if_stack->lineno); - if (! (if_stack->fname_len == ip->nominal_fname_len - && !bcmp (if_stack->fname, ip->nominal_fname, - if_stack->fname_len))) { - fprintf (stderr, ", file "); - eprint_string (if_stack->fname, if_stack->fname_len); - } - fprintf (stderr, ")\n"); - } - if_stack->type = T_ELIF; - } - - if (if_stack->if_succeeded) - skip_if_group (ip, 0, op); - else { - value = eval_if_expression (buf, limit - buf); - if (value == 0) - skip_if_group (ip, 0, op); - else { - ++if_stack->if_succeeded; /* continue processing input */ - output_line_directive (ip, op, 1, same_file); - } - } - return 0; -} - -/* Evaluate a #if expression in BUF, of length LENGTH, then parse the - result as a C expression and return the value as an int. */ - -static HOST_WIDE_INT -eval_if_expression (buf, length) - U_CHAR *buf; - int length; -{ - FILE_BUF temp_obuf; - HASHNODE *save_defined; - HOST_WIDE_INT value; - - save_defined = install ((U_CHAR *) "defined", -1, T_SPEC_DEFINED, - NULL_PTR, -1); - pcp_inside_if = 1; - temp_obuf = expand_to_temp_buffer (buf, buf + length, 0, 1); - pcp_inside_if = 0; - delete_macro (save_defined); /* clean up special symbol */ - - temp_obuf.buf[temp_obuf.length] = '\n'; - value = parse_c_expression ((char *) temp_obuf.buf, - warn_undef && !instack[indepth].system_header_p); - - free (temp_obuf.buf); - - return value; -} - -/* routine to handle ifdef/ifndef. Try to look up the symbol, then do - or don't skip to the #endif/#else/#elif depending on what directive - is actually being processed. */ - -static int -do_xifdef (buf, limit, op, keyword) - U_CHAR *buf, *limit; - FILE_BUF *op; - struct directive *keyword; -{ - int skip; - FILE_BUF *ip = &instack[indepth]; - U_CHAR *end; - int start_of_file = 0; - U_CHAR *control_macro = 0; - - /* Detect a #ifndef at start of file (not counting comments). */ - if (ip->fname != 0 && keyword->type == T_IFNDEF) { - U_CHAR *p = ip->buf; - while (p != directive_start) { - U_CHAR c = *p++; - if (is_space[c]) - ; - /* Make no special provision for backslash-newline here; this is - slower if backslash-newlines are present, but it's correct, - and it's not worth it to tune for the rare backslash-newline. */ - else if (c == '/' - && (*p == '*' || (cplusplus_comments && *p == '/'))) { - /* Skip this comment. */ - int junk = 0; - U_CHAR *save_bufp = ip->bufp; - ip->bufp = p + 1; - p = skip_to_end_of_comment (ip, &junk, 1); - ip->bufp = save_bufp; - } else { - goto fail; - } - } - /* If we get here, this conditional is the beginning of the file. */ - start_of_file = 1; - fail: ; - } - - /* Discard leading and trailing whitespace. */ - SKIP_WHITE_SPACE (buf); - while (limit != buf && is_hor_space[limit[-1]]) limit--; - - /* Find the end of the identifier at the beginning. */ - for (end = buf; is_idchar[*end]; end++); - - if (end == buf) { - skip = (keyword->type == T_IFDEF); - if (! traditional) - pedwarn (end == limit ? "`#%s' with no argument" - : "`#%s' argument starts with punctuation", - keyword->name); - } else { - HASHNODE *hp; - - if (! traditional) { - if (ISDIGIT (buf[0])) - pedwarn ("`#%s' argument starts with a digit", keyword->name); - else if (end != limit) - pedwarn ("garbage at end of `#%s' argument", keyword->name); - } - - hp = lookup (buf, end-buf, -1); - - if (pcp_outfile) { - /* Output a precondition for this macro. */ - if (hp - && (hp->type == T_CONST - || (hp->type == T_MACRO && hp->value.defn->predefined))) - fprintf (pcp_outfile, "#define %s\n", hp->name); - else { - U_CHAR *cp = buf; - fprintf (pcp_outfile, "#undef "); - while (is_idchar[*cp]) /* Ick! */ - fputc (*cp++, pcp_outfile); - putc ('\n', pcp_outfile); - } - } - - skip = (hp == NULL) ^ (keyword->type == T_IFNDEF); - if (start_of_file && !skip) { - control_macro = (U_CHAR *) xmalloc (end - buf + 1); - bcopy ((char *) buf, (char *) control_macro, end - buf); - control_macro[end - buf] = 0; - } - } - - conditional_skip (ip, skip, T_IF, control_macro, op); - return 0; -} - -/* Push TYPE on stack; then, if SKIP is nonzero, skip ahead. - If this is a #ifndef starting at the beginning of a file, - CONTROL_MACRO is the macro name tested by the #ifndef. - Otherwise, CONTROL_MACRO is 0. */ - -static void -conditional_skip (ip, skip, type, control_macro, op) - FILE_BUF *ip; - int skip; - enum node_type type; - U_CHAR *control_macro; - FILE_BUF *op; -{ - IF_STACK_FRAME *temp; - - temp = (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME)); - temp->fname = ip->nominal_fname; - temp->fname_len = ip->nominal_fname_len; - temp->lineno = ip->lineno; - temp->next = if_stack; - temp->control_macro = control_macro; - if_stack = temp; - - if_stack->type = type; - - if (skip != 0) { - skip_if_group (ip, 0, op); - return; - } else { - ++if_stack->if_succeeded; - output_line_directive (ip, &outbuf, 1, same_file); - } -} - -/* Skip to #endif, #else, or #elif. adjust line numbers, etc. - Leaves input ptr at the sharp sign found. - If ANY is nonzero, return at next directive of any sort. */ - -static void -skip_if_group (ip, any, op) - FILE_BUF *ip; - int any; - FILE_BUF *op; -{ - register U_CHAR *bp = ip->bufp, *cp; - register U_CHAR *endb = ip->buf + ip->length; - struct directive *kt; - IF_STACK_FRAME *save_if_stack = if_stack; /* don't pop past here */ - U_CHAR *beg_of_line = bp; - register int ident_length; - U_CHAR *ident, *after_ident; - /* Save info about where the group starts. */ - U_CHAR *beg_of_group = bp; - int beg_lineno = ip->lineno; - int skipping_include_directive = 0; - - if (output_conditionals && op != 0) { - char *ptr = "#failed\n"; - int len = strlen (ptr); - - if (op->bufp > op->buf && op->bufp[-1] != '\n') - { - *op->bufp++ = '\n'; - op->lineno++; - } - check_expand (op, len); - bcopy (ptr, (char *) op->bufp, len); - op->bufp += len; - op->lineno++; - output_line_directive (ip, op, 1, 0); - } - - while (bp < endb) { - switch (*bp++) { - case '/': /* possible comment */ - if (*bp == '\\' && bp[1] == '\n') - newline_fix (bp); - if (*bp == '*' - || (cplusplus_comments && *bp == '/')) { - ip->bufp = ++bp; - bp = skip_to_end_of_comment (ip, &ip->lineno, 0); - } - break; - case '<': - if (skipping_include_directive) { - while (bp < endb && *bp != '>' && *bp != '\n') { - if (*bp == '\\' && bp[1] == '\n') { - ip->lineno++; - bp++; - } - bp++; - } - } - break; - case '\"': - if (skipping_include_directive) { - while (bp < endb && *bp != '\n') { - if (*bp == '"') { - bp++; - break; - } - if (*bp == '\\' && bp[1] == '\n') { - ip->lineno++; - bp++; - } - bp++; - } - break; - } - /* Fall through. */ - case '\'': - bp = skip_quoted_string (bp - 1, endb, ip->lineno, &ip->lineno, - NULL_PTR, NULL_PTR); - break; - case '\\': - /* Char after backslash loses its special meaning in some cases. */ - if (*bp == '\n') { - ++ip->lineno; - bp++; - } else if (traditional && bp < endb) - bp++; - break; - case '\n': - ++ip->lineno; - beg_of_line = bp; - skipping_include_directive = 0; - break; - case '%': - if (beg_of_line == 0 || traditional) - break; - ip->bufp = bp - 1; - while (bp[0] == '\\' && bp[1] == '\n') - bp += 2; - if (*bp == ':') - goto sharp_token; - break; - case '#': - /* # keyword: a # must be first nonblank char on the line */ - if (beg_of_line == 0) - break; - ip->bufp = bp - 1; - sharp_token: - /* Scan from start of line, skipping whitespace, comments - and backslash-newlines, and see if we reach this #. - If not, this # is not special. */ - bp = beg_of_line; - /* If -traditional, require # to be at beginning of line. */ - if (!traditional) { - while (1) { - if (is_hor_space[*bp]) - bp++; - else if (*bp == '\\' && bp[1] == '\n') - bp += 2; - else if (*bp == '/' && bp[1] == '*') { - bp += 2; - while (1) - { - if (*bp == '*') - { - if (bp[1] == '/') - { - bp += 2; - break; - } - } - else - { -#ifdef MULTIBYTE_CHARS - /* CYGNUS LOCAL chill */ - if (! chill) - /* END CYGNUS LOCAL chill */ - { - int length; - length = local_mblen (bp, endb - bp); - if (length > 1) - bp += (length - 1); - } -#endif - } - bp++; - } - } - /* There is no point in trying to deal with C++ // comments here, - because if there is one, then this # must be part of the - comment and we would never reach here. */ - else break; - } - } - if (bp != ip->bufp) { - bp = ip->bufp + 1; /* Reset bp to after the #. */ - break; - } - - bp = ip->bufp + 1; /* Point after the '#' */ - if (ip->bufp[0] == '%') { - /* Skip past the ':' again. */ - while (*bp == '\\') { - ip->lineno++; - bp += 2; - } - bp++; - } - - /* Skip whitespace and \-newline. */ - while (1) { - if (is_hor_space[*bp]) - bp++; - else if (*bp == '\\' && bp[1] == '\n') - bp += 2; - else if (*bp == '/') { - if (bp[1] == '\\' && bp[2] == '\n') - newline_fix (bp + 1); - if (bp[1] == '*') { - for (bp += 2; ; bp++) { - if (*bp == '\n') - ip->lineno++; - else if (*bp == '*') { - if (bp[-1] == '/' && warn_comments) - warning ("`/*' within comment"); - if (bp[1] == '\\' && bp[2] == '\n') - newline_fix (bp + 1); - if (bp[1] == '/') - break; - } - else - { -#ifdef MULTIBYTE_CHARS - /* CYGNUS LOCAL chill */ - if (! chill) - /* END CYGNUS LOCAL chill */ - { - int length; - length = local_mblen (bp, endb - bp); - if (length > 1) - bp += (length - 1); - } -#endif - } - } - bp += 2; - } else if (bp[1] == '/' && cplusplus_comments) { - for (bp += 2; ; bp++) { - if (*bp == '\n') - break; - if (*bp == '\\' && bp[1] == '\n') - { - if (warn_comments) - warning ("multiline `//' comment"); - ip->lineno++; - bp++; - } - else - { -#ifdef MULTIBYTE_CHARS - /* CYGNUS LOCAL chill */ - if (! chill) - /* END CYGNUS LOCAL chill */ - { - int length; - length = local_mblen (bp, endb - bp); - if (length > 1) - bp += (length - 1); - } -#endif - } - } - } else - break; - } else - break; - } - - cp = bp; - - /* Now find end of directive name. - If we encounter a backslash-newline, exchange it with any following - symbol-constituents so that we end up with a contiguous name. */ - - while (1) { - if (is_idchar[*bp]) - bp++; - else { - if (*bp == '\\' && bp[1] == '\n') - name_newline_fix (bp); - if (is_idchar[*bp]) - bp++; - else break; - } - } - ident_length = bp - cp; - ident = cp; - after_ident = bp; - - /* A line of just `#' becomes blank. */ - - if (ident_length == 0 && *after_ident == '\n') { - continue; - } - - if (ident_length == 0 || !is_idstart[*ident]) { - U_CHAR *p = ident; - while (is_idchar[*p]) { - if (*p < '0' || *p > '9') - break; - p++; - } - /* Handle # followed by a line number. */ - if (p != ident && !is_idchar[*p]) { - if (pedantic) - pedwarn ("`#' followed by integer"); - continue; - } - - /* Avoid error for `###' and similar cases unless -pedantic. */ - if (p == ident) { - while (*p == '#' || is_hor_space[*p]) p++; - if (*p == '\n') { - if (pedantic && !lang_asm) - pedwarn ("invalid preprocessing directive"); - continue; - } - } - - if (!lang_asm && pedantic) - pedwarn ("invalid preprocessing directive name"); - continue; - } - - for (kt = directive_table; kt->length >= 0; kt++) { - IF_STACK_FRAME *temp; - if (ident_length == kt->length - && bcmp (cp, kt->name, kt->length) == 0) { - /* If we are asked to return on next directive, do so now. */ - if (any) - goto done; - - switch (kt->type) { - case T_IF: - case T_IFDEF: - case T_IFNDEF: - temp = (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME)); - temp->next = if_stack; - if_stack = temp; - temp->lineno = ip->lineno; - temp->fname = ip->nominal_fname; - temp->fname_len = ip->nominal_fname_len; - temp->type = kt->type; - break; - case T_ELSE: - case T_ENDIF: - if (pedantic && if_stack != save_if_stack) - validate_else (bp, endb); - case T_ELIF: - if (if_stack == instack[indepth].if_stack) { - error ("`#%s' not within a conditional", kt->name); - break; - } - else if (if_stack == save_if_stack) - goto done; /* found what we came for */ - - if (kt->type != T_ENDIF) { - if (if_stack->type == T_ELSE) - error ("`#else' or `#elif' after `#else'"); - if_stack->type = kt->type; - break; - } - - temp = if_stack; - if_stack = if_stack->next; - free (temp); - break; - - case T_INCLUDE: - case T_INCLUDE_NEXT: - case T_IMPORT: - skipping_include_directive = 1; - break; - - default: - break; - } - break; - } - } - /* Don't let erroneous code go by. */ - if (kt->length < 0 && !lang_asm && pedantic) - pedwarn ("invalid preprocessing directive name"); - } - } - - ip->bufp = bp; - /* after this returns, rescan will exit because ip->bufp - now points to the end of the buffer. - rescan is responsible for the error message also. */ - - done: - if (output_conditionals && op != 0) { - char *ptr = "#endfailed\n"; - int len = strlen (ptr); - - if (op->bufp > op->buf && op->bufp[-1] != '\n') - { - *op->bufp++ = '\n'; - op->lineno++; - } - check_expand (op, beg_of_line - beg_of_group); - bcopy ((char *) beg_of_group, (char *) op->bufp, - beg_of_line - beg_of_group); - op->bufp += beg_of_line - beg_of_group; - op->lineno += ip->lineno - beg_lineno; - check_expand (op, len); - bcopy (ptr, (char *) op->bufp, len); - op->bufp += len; - op->lineno++; - } -} - -/* Handle a #else directive. Do this by just continuing processing - without changing if_stack ; this is so that the error message - for missing #endif's etc. will point to the original #if. It - is possible that something different would be better. */ - -static int -do_else (buf, limit, op, keyword) - U_CHAR *buf, *limit; - FILE_BUF *op; - struct directive *keyword ATTRIBUTE_UNUSED; -{ - FILE_BUF *ip = &instack[indepth]; - - if (pedantic) { - SKIP_WHITE_SPACE (buf); - if (buf != limit) - pedwarn ("text following `#else' violates ANSI standard"); - } - - if (if_stack == instack[indepth].if_stack) { - error ("`#else' not within a conditional"); - return 0; - } else { - /* #ifndef can't have its special treatment for containing the whole file - if it has a #else clause. */ - if_stack->control_macro = 0; - - if (if_stack->type != T_IF && if_stack->type != T_ELIF) { - error ("`#else' after `#else'"); - fprintf (stderr, " (matches line %d", if_stack->lineno); - if (! (if_stack->fname_len == ip->nominal_fname_len - && !bcmp (if_stack->fname, ip->nominal_fname, - if_stack->fname_len))) { - fprintf (stderr, ", file "); - eprint_string (if_stack->fname, if_stack->fname_len); - } - fprintf (stderr, ")\n"); - } - if_stack->type = T_ELSE; - } - - if (if_stack->if_succeeded) - skip_if_group (ip, 0, op); - else { - ++if_stack->if_succeeded; /* continue processing input */ - output_line_directive (ip, op, 1, same_file); - } - return 0; -} - -/* Unstack after #endif directive. */ - -static int -do_endif (buf, limit, op, keyword) - U_CHAR *buf, *limit; - FILE_BUF *op; - struct directive *keyword ATTRIBUTE_UNUSED; -{ - if (pedantic) { - SKIP_WHITE_SPACE (buf); - if (buf != limit) - pedwarn ("text following `#endif' violates ANSI standard"); - } - - if (if_stack == instack[indepth].if_stack) - error ("unbalanced `#endif'"); - else { - IF_STACK_FRAME *temp = if_stack; - if_stack = if_stack->next; - if (temp->control_macro != 0) { - /* This #endif matched a #ifndef at the start of the file. - See if it is at the end of the file. */ - FILE_BUF *ip = &instack[indepth]; - U_CHAR *p = ip->bufp; - U_CHAR *ep = ip->buf + ip->length; - - while (p != ep) { - U_CHAR c = *p++; - if (!is_space[c]) { - if (c == '/' - && (*p == '*' || (cplusplus_comments && *p == '/'))) { - /* Skip this comment. */ - int junk = 0; - U_CHAR *save_bufp = ip->bufp; - ip->bufp = p + 1; - p = skip_to_end_of_comment (ip, &junk, 1); - ip->bufp = save_bufp; - } else - goto fail; - } - } - /* If we get here, this #endif ends a #ifndef - that contains all of the file (aside from whitespace). - Arrange not to include the file again - if the macro that was tested is defined. - - Do not do this for the top-level file in a -include or any - file in a -imacros. */ - if (indepth != 0 - && ! (indepth == 1 && no_record_file) - && ! (no_record_file && no_output)) - record_control_macro (ip->inc, temp->control_macro); - fail: ; - } - free (temp); - output_line_directive (&instack[indepth], op, 1, same_file); - } - return 0; -} - -/* When an #else or #endif is found while skipping failed conditional, - if -pedantic was specified, this is called to warn about text after - the directive name. P points to the first char after the directive - name. */ - -static void -validate_else (p, limit) - register U_CHAR *p; - register U_CHAR *limit; -{ - /* Advance P over whitespace and comments. */ - while (1) { - while (*p == '\\' && p[1] == '\n') - p += 2; - if (is_hor_space[*p]) - p++; - else if (*p == '/') { - while (p[1] == '\\' && p[2] == '\n') - p += 2; - if (p[1] == '*') { - /* Don't bother warning about unterminated comments - since that will happen later. Just be sure to exit. */ - for (p += 2; ; p++) { - if (p == limit) - return; - if (*p == '*') { - while (p[1] == '\\' && p[2] == '\n') - p += 2; - if (p[1] == '/') { - p += 2; - break; - } - } - else - { -#ifdef MULTIBYTE_CHARS - /* CYGNUS LOCAL chill */ - if (! chill) - /* END CYGNUS LOCAL chill */ - { - int length; - length = local_mblen (p, limit - p); - if (length > 1) - p += (length - 1); - } -#endif - } - } - } - else if (cplusplus_comments && p[1] == '/') - return; - else break; - } else break; - } - if (*p != '\n') - pedwarn ("text following `#else' or `#endif' violates ANSI standard"); -} - -/* Skip a comment, assuming the input ptr immediately follows the - initial slash-star. Bump *LINE_COUNTER for each newline. - (The canonical line counter is &ip->lineno.) - Don't use this routine (or the next one) if bumping the line - counter is not sufficient to deal with newlines in the string. - - If NOWARN is nonzero, don't warn about slash-star inside a comment. - This feature is useful when processing a comment that is going to - be processed or was processed at another point in the preprocessor, - to avoid a duplicate warning. Likewise for unterminated comment - errors. */ - -static U_CHAR * -skip_to_end_of_comment (ip, line_counter, nowarn) - register FILE_BUF *ip; - int *line_counter; /* place to remember newlines, or NULL */ - int nowarn; -{ - register U_CHAR *limit = ip->buf + ip->length; - register U_CHAR *bp = ip->bufp; - FILE_BUF *op = put_out_comments && !line_counter ? &outbuf : (FILE_BUF *) 0; - int start_line = line_counter ? *line_counter : 0; - - /* JF this line_counter stuff is a crock to make sure the - comment is only put out once, no matter how many times - the comment is skipped. It almost works */ - if (op) { - *op->bufp++ = '/'; - *op->bufp++ = bp[-1]; - } - if (cplusplus_comments && bp[-1] == '/') { - for (; bp < limit; bp++) { - if (*bp == '\n') - break; - if (*bp == '\\' && bp + 1 < limit && bp[1] == '\n') - { - if (!nowarn && warn_comments) - warning ("multiline `//' comment"); - if (line_counter) - ++*line_counter; - if (op) - { - ++op->lineno; - *op->bufp++ = *bp; - } - ++bp; - } - else - { -#ifdef MULTIBYTE_CHARS - /* CYGNUS LOCAL chill */ - if (! chill) - /* END CYGNUS LOCAL chill */ - { - int length; - length = local_mblen (bp, limit - bp); - if (length > 1) - { - if (op) - { - bcopy (bp, op->bufp, length - 1); - op->bufp += (length - 1); - } - bp += (length - 1); - } - } -#endif - } - if (op) - *op->bufp++ = *bp; - } - ip->bufp = bp; - return bp; - } - while (bp < limit) { - if (op) - *op->bufp++ = *bp; - switch (*bp++) { - case '\n': - /* If this is the end of the file, we have an unterminated comment. - Don't swallow the newline. We are guaranteed that there will be a - trailing newline and various pieces assume it's there. */ - if (bp == limit) - { - --bp; - --limit; - break; - } - if (line_counter != NULL) - ++*line_counter; - if (op) - ++op->lineno; - break; - case '*': - if (bp[-2] == '/' && !nowarn && warn_comments) - warning ("`/*' within comment"); - if (*bp == '\\' && bp[1] == '\n') - newline_fix (bp); - if (*bp == '/') { - if (op) - *op->bufp++ = '/'; - ip->bufp = ++bp; - return bp; - } - break; -#ifdef MULTIBYTE_CHARS - default: - /* CYGNUS LOCAL chill */ - if (! chill) - /* END CYGNUS LOCAL chill */ - { - int length; - bp--; - length = local_mblen (bp, limit - bp); - if (length <= 0) - length = 1; - if (op) - { - op->bufp--; - bcopy (bp, op->bufp, length); - op->bufp += length; - } - bp += length; - } -#endif - } - } - - if (!nowarn) - error_with_line (line_for_error (start_line), "unterminated comment"); - ip->bufp = bp; - return bp; -} - -/* Skip over a quoted string. BP points to the opening quote. - Returns a pointer after the closing quote. Don't go past LIMIT. - START_LINE is the line number of the starting point (but it need - not be valid if the starting point is inside a macro expansion). - - The input stack state is not changed. - - If COUNT_NEWLINES is nonzero, it points to an int to increment - for each newline passed. - - If BACKSLASH_NEWLINES_P is nonzero, store 1 thru it - if we pass a backslash-newline. - - If EOFP is nonzero, set *EOFP to 1 if the string is unterminated. */ - -static U_CHAR * -skip_quoted_string (bp, limit, start_line, count_newlines, backslash_newlines_p, eofp) - register U_CHAR *bp; - register U_CHAR *limit; - int start_line; - int *count_newlines; - int *backslash_newlines_p; - int *eofp; -{ - register U_CHAR c, match; - - match = *bp++; - while (1) { - if (bp >= limit) { - error_with_line (line_for_error (start_line), - "unterminated string or character constant"); - error_with_line (multiline_string_line, - "possible real start of unterminated constant"); - multiline_string_line = 0; - if (eofp) - *eofp = 1; - break; - } - c = *bp++; - if (c == '\\') { - while (*bp == '\\' && bp[1] == '\n') { - if (backslash_newlines_p) - *backslash_newlines_p = 1; - if (count_newlines) - ++*count_newlines; - bp += 2; - } - if (*bp == '\n') { - if (backslash_newlines_p) - *backslash_newlines_p = 1; - if (count_newlines) - ++*count_newlines; - } - bp++; - } else if (c == '\n') { - if (traditional -/* CYGNUS LOCAL chill */ - || chill -/* END CYGNUS LOCAL chill */ - ) { - /* Unterminated strings and character constants are 'valid'. */ - bp--; /* Don't consume the newline. */ - if (eofp) - *eofp = 1; - break; - } - if (match == '\'') { - error_with_line (line_for_error (start_line), - "unterminated string or character constant"); - bp--; - if (eofp) - *eofp = 1; - break; - } - /* If not traditional, then allow newlines inside strings. */ - if (count_newlines) - ++*count_newlines; - if (multiline_string_line == 0) { - if (pedantic) - pedwarn_with_line (line_for_error (start_line), - "string constant runs past end of line"); - multiline_string_line = start_line; - } - } else if (c == match) - break; -#ifdef MULTIBYTE_CHARS -/* CYGNUS LOCAL chill */ - else if (! chill) -/* END CYGNUS LOCAL chill */ - { - int length; - --bp; - length = local_mblen (bp, limit - bp); - if (length <= 0) - length = 1; - bp += length; - } -#endif - } - return bp; -} - -/* Place into DST a quoted string representing the string SRC. - SRCLEN is the length of SRC; SRC may contain null bytes. - Return the address of DST's terminating null. */ - -static char * -quote_string (dst, src, srclen) - char *dst, *src; - size_t srclen; -{ - U_CHAR c; - char *srclim = src + srclen; - - *dst++ = '\"'; - while (src != srclim) - switch ((c = *src++)) - { - default: - if (ISPRINT (c)) - *dst++ = c; - else - { - sprintf (dst, "\\%03o", c); - dst += 4; - } - break; - - case '\"': - case '\\': - *dst++ = '\\'; - *dst++ = c; - break; - } - - *dst++ = '\"'; - *dst = '\0'; - return dst; -} - -/* Skip across a group of balanced parens, starting from IP->bufp. - IP->bufp is updated. Use this with IP->bufp pointing at an open-paren. - - This does not handle newlines, because it's used for the arg of #if, - where there aren't any newlines. Also, backslash-newline can't appear. */ - -static U_CHAR * -skip_paren_group (ip) - register FILE_BUF *ip; -{ - U_CHAR *limit = ip->buf + ip->length; - U_CHAR *p = ip->bufp; - int depth = 0; - int lines_dummy = 0; - - while (p != limit) { - int c = *p++; - switch (c) { - case '(': - depth++; - break; - - case ')': - depth--; - if (depth == 0) - return ip->bufp = p; - break; - - case '/': - if (*p == '*') { - ip->bufp = p; - p = skip_to_end_of_comment (ip, &lines_dummy, 0); - p = ip->bufp; - } - - case '"': - case '\'': - { - int eofp = 0; - p = skip_quoted_string (p - 1, limit, 0, NULL_PTR, NULL_PTR, &eofp); - if (eofp) - return ip->bufp = p; - } - break; - } - } - - ip->bufp = p; - return p; -} - -/* Write out a #line directive, for instance, after an #include file. - If CONDITIONAL is nonzero, we can omit the #line if it would - appear to be a no-op, and we can output a few newlines instead - if we want to increase the line number by a small amount. - FILE_CHANGE says whether we are entering a file, leaving, or neither. */ - -static void -output_line_directive (ip, op, conditional, file_change) - FILE_BUF *ip, *op; - int conditional; - enum file_change_code file_change; -{ - int len; - char *line_directive_buf, *line_end; - - if (no_line_directives - || ip->fname == NULL - || no_output) { - op->lineno = ip->lineno; - return; - } - - if (conditional) { - if (ip->lineno == op->lineno) - return; - - /* If the inherited line number is a little too small, - output some newlines instead of a #line directive. */ - if (ip->lineno > op->lineno && ip->lineno < op->lineno + 8) { - check_expand (op, 10); - while (ip->lineno > op->lineno) { - *op->bufp++ = '\n'; - op->lineno++; - } - return; - } - } - - /* Output a positive line number if possible. */ - while (ip->lineno <= 0 && ip->bufp - ip->buf < ip->length - && *ip->bufp == '\n') { - ip->lineno++; - ip->bufp++; - } - - line_directive_buf = (char *) alloca (4 * ip->nominal_fname_len + 100); - sprintf (line_directive_buf, "# %d ", ip->lineno); - line_end = quote_string (line_directive_buf + strlen (line_directive_buf), - ip->nominal_fname, ip->nominal_fname_len); - if (file_change != same_file) { - *line_end++ = ' '; - *line_end++ = file_change == enter_file ? '1' : '2'; - } - /* Tell cc1 if following text comes from a system header file. */ - if (ip->system_header_p) { - *line_end++ = ' '; - *line_end++ = '3'; - } -#ifndef NO_IMPLICIT_EXTERN_C - /* Tell cc1plus if following text should be treated as C. */ - if (ip->system_header_p == 2 && cplusplus) { - *line_end++ = ' '; - *line_end++ = '4'; - } -#endif - *line_end++ = '\n'; - len = line_end - line_directive_buf; - check_expand (op, len + 1); - if (op->bufp > op->buf && op->bufp[-1] != '\n') - *op->bufp++ = '\n'; - bcopy ((char *) line_directive_buf, (char *) op->bufp, len); - op->bufp += len; - op->lineno = ip->lineno; -} - -/* This structure represents one parsed argument in a macro call. - `raw' points to the argument text as written (`raw_length' is its length). - `expanded' points to the argument's macro-expansion - (its length is `expand_length'). - `stringified_length' is the length the argument would have - if stringified. - `use_count' is the number of times this macro arg is substituted - into the macro. If the actual use count exceeds 10, - the value stored is 10. - `free1' and `free2', if nonzero, point to blocks to be freed - when the macro argument data is no longer needed. */ - -struct argdata { - U_CHAR *raw, *expanded; - int raw_length, expand_length; - int stringified_length; - U_CHAR *free1, *free2; - char newlines; - char use_count; -}; - -/* Expand a macro call. - HP points to the symbol that is the macro being called. - Put the result of expansion onto the input stack - so that subsequent input by our caller will use it. - - If macro wants arguments, caller has already verified that - an argument list follows; arguments come from the input stack. */ - -static void -macroexpand (hp, op) - HASHNODE *hp; - FILE_BUF *op; -{ - int nargs; - DEFINITION *defn = hp->value.defn; - register U_CHAR *xbuf; - int xbuf_len; - int start_line = instack[indepth].lineno; - int rest_args, rest_zero; - - CHECK_DEPTH (return;); - - /* it might not actually be a macro. */ - if (hp->type != T_MACRO) { - special_symbol (hp, op); - return; - } - - /* This macro is being used inside a #if, which means it must be */ - /* recorded as a precondition. */ - if (pcp_inside_if && pcp_outfile && defn->predefined) - dump_single_macro (hp, pcp_outfile); - - nargs = defn->nargs; - - if (nargs >= 0) { - register int i; - struct argdata *args; - char *parse_error = 0; - - args = (struct argdata *) alloca ((nargs + 1) * sizeof (struct argdata)); - - for (i = 0; i < nargs; i++) { - args[i].raw = (U_CHAR *) ""; - args[i].expanded = 0; - args[i].raw_length = args[i].expand_length - = args[i].stringified_length = 0; - args[i].free1 = args[i].free2 = 0; - args[i].use_count = 0; - } - - /* Parse all the macro args that are supplied. I counts them. - The first NARGS args are stored in ARGS. - The rest are discarded. - If rest_args is set then we assume macarg absorbed the rest of the args. - */ - i = 0; - rest_args = 0; - do { - /* Discard the open-parenthesis or comma before the next arg. */ - ++instack[indepth].bufp; - if (rest_args) - continue; - if (i < nargs || (nargs == 0 && i == 0)) { - /* If we are working on last arg which absorbs rest of args... */ - if (i == nargs - 1 && defn->rest_args) - rest_args = 1; - parse_error = macarg (&args[i], rest_args); - } - else - parse_error = macarg (NULL_PTR, 0); - if (parse_error) { - error_with_line (line_for_error (start_line), parse_error); - break; - } - i++; - } while (*instack[indepth].bufp != ')'); - - /* If we got one arg but it was just whitespace, call that 0 args. */ - if (i == 1) { - register U_CHAR *bp = args[0].raw; - register U_CHAR *lim = bp + args[0].raw_length; - /* cpp.texi says for foo ( ) we provide one argument. - However, if foo wants just 0 arguments, treat this as 0. */ - if (nargs == 0) - while (bp != lim && is_space[*bp]) bp++; - if (bp == lim) - i = 0; - } - - /* Don't output an error message if we have already output one for - a parse error above. */ - rest_zero = 0; - if (nargs == 0 && i > 0) { - if (! parse_error) - error ("arguments given to macro `%s'", hp->name); - } else if (i < nargs) { - /* traditional C allows foo() if foo wants one argument. */ - if (nargs == 1 && i == 0 && traditional) - ; - /* the rest args token is allowed to absorb 0 tokens */ - else if (i == nargs - 1 && defn->rest_args) - rest_zero = 1; - else if (parse_error) - ; - else if (i == 0) - error ("macro `%s' used without args", hp->name); - else if (i == 1) - error ("macro `%s' used with just one arg", hp->name); - else - error ("macro `%s' used with only %d args", hp->name, i); - } else if (i > nargs) { - if (! parse_error) - error ("macro `%s' used with too many (%d) args", hp->name, i); - } - - /* Swallow the closeparen. */ - ++instack[indepth].bufp; - - /* If macro wants zero args, we parsed the arglist for checking only. - Read directly from the macro definition. */ - if (nargs == 0) { - xbuf = defn->expansion; - xbuf_len = defn->length; - } else { - register U_CHAR *exp = defn->expansion; - register int offset; /* offset in expansion, - copied a piece at a time */ - register int totlen; /* total amount of exp buffer filled so far */ - - register struct reflist *ap, *last_ap; - - /* Macro really takes args. Compute the expansion of this call. */ - - /* Compute length in characters of the macro's expansion. - Also count number of times each arg is used. */ - xbuf_len = defn->length; - for (ap = defn->pattern; ap != NULL; ap = ap->next) { - if (ap->stringify) - xbuf_len += args[ap->argno].stringified_length; - else if (ap->raw_before != 0 || ap->raw_after != 0 || traditional) - /* Add 4 for two newline-space markers to prevent - token concatenation. */ - xbuf_len += args[ap->argno].raw_length + 4; - else { - /* We have an ordinary (expanded) occurrence of the arg. - So compute its expansion, if we have not already. */ - if (args[ap->argno].expanded == 0) { - FILE_BUF obuf; - obuf = expand_to_temp_buffer (args[ap->argno].raw, - args[ap->argno].raw + args[ap->argno].raw_length, - 1, 0); - - args[ap->argno].expanded = obuf.buf; - args[ap->argno].expand_length = obuf.length; - args[ap->argno].free2 = obuf.buf; - } - - /* Add 4 for two newline-space markers to prevent - token concatenation. */ - xbuf_len += args[ap->argno].expand_length + 4; - } - if (args[ap->argno].use_count < 10) - args[ap->argno].use_count++; - } - - xbuf = (U_CHAR *) xmalloc (xbuf_len + 1); - - /* Generate in XBUF the complete expansion - with arguments substituted in. - TOTLEN is the total size generated so far. - OFFSET is the index in the definition - of where we are copying from. */ - offset = totlen = 0; - for (last_ap = NULL, ap = defn->pattern; ap != NULL; - last_ap = ap, ap = ap->next) { - register struct argdata *arg = &args[ap->argno]; - int count_before = totlen; - - /* Add chars to XBUF. */ - for (i = 0; i < ap->nchars; i++, offset++) - xbuf[totlen++] = exp[offset]; - - /* If followed by an empty rest arg with concatenation, - delete the last run of nonwhite chars. */ - if (rest_zero && totlen > count_before - && ((ap->rest_args && ap->raw_before != 0) - || (last_ap != NULL && last_ap->rest_args - && last_ap->raw_after != 0))) { - /* Delete final whitespace. */ - while (totlen > count_before && is_space[xbuf[totlen - 1]]) { - totlen--; - } - - /* Delete the nonwhites before them. */ - while (totlen > count_before && ! is_space[xbuf[totlen - 1]]) { - totlen--; - } - } - - if (ap->stringify != 0) { - int arglen = arg->raw_length; - int escaped = 0; - int in_string = 0; - int c; - i = 0; - while (i < arglen - && (c = arg->raw[i], is_space[c])) - i++; - while (i < arglen - && (c = arg->raw[arglen - 1], is_space[c])) - arglen--; - if (!traditional) - xbuf[totlen++] = '\"'; /* insert beginning quote */ - for (; i < arglen; i++) { - c = arg->raw[i]; - - if (! in_string) { - /* Special markers Newline Space - generate nothing for a stringified argument. */ - if (c == '\n' && arg->raw[i+1] != '\n') { - i++; - continue; - } - - /* Internal sequences of whitespace are replaced by one space - except within an string or char token. */ - if (c == '\n' ? arg->raw[i+1] == '\n' : is_space[c]) { - while (1) { - /* Note that Newline Space does occur within whitespace - sequences; consider it part of the sequence. */ - if (c == '\n' && is_space[arg->raw[i+1]]) - i += 2; - else if (c != '\n' && is_space[c]) - i++; - else break; - c = arg->raw[i]; - } - i--; - c = ' '; - } - } - - if (escaped) - escaped = 0; - else { - if (c == '\\') - escaped = 1; - else if (in_string) { - if (c == in_string) - in_string = 0; - else - { -#ifdef MULTIBYTE_CHARS - /* CYGNUS LOCAL chill */ - if (! chill) - /* END CYGNUS LOCAL chill */ - { - int length; - length = local_mblen (arg->raw + i, arglen - i); - if (length > 1) - { - bcopy (arg->raw + i, xbuf + totlen, length); - i += length - 1; - totlen += length; - continue; - } - } -#endif - } - } else if (c == '\"' || c == '\'') - in_string = c; - } - - /* Escape these chars */ - if (c == '\"' || (in_string && c == '\\')) - xbuf[totlen++] = '\\'; - /* We used to output e.g. \008 for control characters here, - but this doesn't conform to the C Standard. - Just output the characters as-is. */ - xbuf[totlen++] = c; - } - if (!traditional) - xbuf[totlen++] = '\"'; /* insert ending quote */ - } else if (ap->raw_before != 0 || ap->raw_after != 0 || traditional) { - U_CHAR *p1 = arg->raw; - U_CHAR *l1 = p1 + arg->raw_length; - if (ap->raw_before != 0) { - while (p1 != l1 && is_space[*p1]) p1++; - while (p1 != l1 && is_idchar[*p1]) - xbuf[totlen++] = *p1++; - /* Delete any no-reexpansion marker that follows - an identifier at the beginning of the argument - if the argument is concatenated with what precedes it. */ - if (p1[0] == '\n' && p1[1] == '-') - p1 += 2; - } else if (!traditional) { - /* Ordinary expanded use of the argument. - Put in newline-space markers to prevent token pasting. */ - xbuf[totlen++] = '\n'; - xbuf[totlen++] = ' '; - } - if (ap->raw_after != 0) { - /* Arg is concatenated after: delete trailing whitespace, - whitespace markers, and no-reexpansion markers. */ - while (p1 != l1) { - if (is_space[l1[-1]]) l1--; - else if (l1[-1] == '-') { - U_CHAR *p2 = l1 - 1; - /* If a `-' is preceded by an odd number of newlines then it - and the last newline are a no-reexpansion marker. */ - while (p2 != p1 && p2[-1] == '\n') p2--; - if ((l1 - 1 - p2) & 1) { - l1 -= 2; - } - else break; - } - else break; - } - } - - bcopy ((char *) p1, (char *) (xbuf + totlen), l1 - p1); - totlen += l1 - p1; - if (!traditional && ap->raw_after == 0) { - /* Ordinary expanded use of the argument. - Put in newline-space markers to prevent token pasting. */ - xbuf[totlen++] = '\n'; - xbuf[totlen++] = ' '; - } - } else { - /* Ordinary expanded use of the argument. - Put in newline-space markers to prevent token pasting. */ - if (!traditional) { - xbuf[totlen++] = '\n'; - xbuf[totlen++] = ' '; - } - bcopy ((char *) arg->expanded, (char *) (xbuf + totlen), - arg->expand_length); - totlen += arg->expand_length; - if (!traditional) { - xbuf[totlen++] = '\n'; - xbuf[totlen++] = ' '; - } - /* If a macro argument with newlines is used multiple times, - then only expand the newlines once. This avoids creating output - lines which don't correspond to any input line, which confuses - gdb and gcov. */ - if (arg->use_count > 1 && arg->newlines > 0) { - /* Don't bother doing change_newlines for subsequent - uses of arg. */ - arg->use_count = 1; - arg->expand_length - = change_newlines (arg->expanded, arg->expand_length); - } - } - - if (totlen > xbuf_len) - abort (); - } - - /* If there is anything left of the definition after handling - the arg list, copy that in too. */ - - for (i = offset; i < defn->length; i++) { - /* if we've reached the end of the macro */ - if (exp[i] == ')') - rest_zero = 0; - if (! (rest_zero && last_ap != NULL && last_ap->rest_args - && last_ap->raw_after != 0)) - xbuf[totlen++] = exp[i]; - } - - xbuf[totlen] = 0; - xbuf_len = totlen; - - for (i = 0; i < nargs; i++) { - if (args[i].free1 != 0) - free (args[i].free1); - if (args[i].free2 != 0) - free (args[i].free2); - } - } - } else { - xbuf = defn->expansion; - xbuf_len = defn->length; - } - - /* Now put the expansion on the input stack - so our caller will commence reading from it. */ - { - register FILE_BUF *ip2; - - ip2 = &instack[++indepth]; - - ip2->fname = 0; - ip2->nominal_fname = 0; - ip2->nominal_fname_len = 0; - ip2->inc = 0; - /* This may not be exactly correct, but will give much better error - messages for nested macro calls than using a line number of zero. */ - ip2->lineno = start_line; - ip2->buf = xbuf; - ip2->length = xbuf_len; - ip2->bufp = xbuf; - ip2->free_ptr = (nargs > 0) ? xbuf : 0; - ip2->macro = hp; - ip2->if_stack = if_stack; - ip2->system_header_p = 0; - - /* Recursive macro use sometimes works traditionally. - #define foo(x,y) bar (x (y,0), y) - foo (foo, baz) */ - - if (!traditional) - hp->type = T_DISABLED; - } -} - -/* Parse a macro argument and store the info on it into *ARGPTR. - REST_ARGS is passed to macarg1 to make it absorb the rest of the args. - Return nonzero to indicate a syntax error. */ - -static char * -macarg (argptr, rest_args) - register struct argdata *argptr; - int rest_args; -{ - FILE_BUF *ip = &instack[indepth]; - int paren = 0; - int newlines = 0; - int comments = 0; - char *result = 0; - - /* Try to parse as much of the argument as exists at this - input stack level. */ - U_CHAR *bp = macarg1 (ip->bufp, ip->buf + ip->length, ip->macro, - &paren, &newlines, &comments, rest_args); - - /* If we find the end of the argument at this level, - set up *ARGPTR to point at it in the input stack. */ - if (!(ip->fname != 0 && (newlines != 0 || comments != 0)) - && bp != ip->buf + ip->length) { - if (argptr != 0) { - argptr->raw = ip->bufp; - argptr->raw_length = bp - ip->bufp; - argptr->newlines = newlines; - } - ip->bufp = bp; - } else { - /* This input stack level ends before the macro argument does. - We must pop levels and keep parsing. - Therefore, we must allocate a temporary buffer and copy - the macro argument into it. */ - int bufsize = bp - ip->bufp; - int extra = newlines; - U_CHAR *buffer = (U_CHAR *) xmalloc (bufsize + extra + 1); - int final_start = 0; - - bcopy ((char *) ip->bufp, (char *) buffer, bufsize); - ip->bufp = bp; - ip->lineno += newlines; - - while (bp == ip->buf + ip->length) { - if (instack[indepth].macro == 0) { - result = "unterminated macro call"; - break; - } - ip->macro->type = T_MACRO; - if (ip->free_ptr) - free (ip->free_ptr); - ip = &instack[--indepth]; - newlines = 0; - comments = 0; - bp = macarg1 (ip->bufp, ip->buf + ip->length, ip->macro, &paren, - &newlines, &comments, rest_args); - final_start = bufsize; - bufsize += bp - ip->bufp; - extra += newlines; - buffer = (U_CHAR *) xrealloc (buffer, bufsize + extra + 1); - bcopy ((char *) ip->bufp, (char *) (buffer + bufsize - (bp - ip->bufp)), - bp - ip->bufp); - ip->bufp = bp; - ip->lineno += newlines; - } - - /* Now, if arg is actually wanted, record its raw form, - discarding comments and duplicating newlines in whatever - part of it did not come from a macro expansion. - EXTRA space has been preallocated for duplicating the newlines. - FINAL_START is the index of the start of that part. */ - if (argptr != 0) { - argptr->raw = buffer; - argptr->raw_length = bufsize; - argptr->free1 = buffer; - argptr->newlines = newlines; - if ((newlines || comments) && ip->fname != 0) - argptr->raw_length - = final_start + - discard_comments (argptr->raw + final_start, - argptr->raw_length - final_start, - newlines); - argptr->raw[argptr->raw_length] = 0; - if (argptr->raw_length > bufsize + extra) - abort (); - } - } - - /* If we are not discarding this argument, - macroexpand it and compute its length as stringified. - All this info goes into *ARGPTR. */ - - if (argptr != 0) { - register U_CHAR *buf, *lim; - register int totlen; - - buf = argptr->raw; - lim = buf + argptr->raw_length; - - while (buf != lim && is_space[*buf]) - buf++; - while (buf != lim && is_space[lim[-1]]) - lim--; - totlen = traditional ? 0 : 2; /* Count opening and closing quote. */ - while (buf != lim) { - register U_CHAR c = *buf++; - totlen++; - /* Internal sequences of whitespace are replaced by one space - in most cases, but not always. So count all the whitespace - in case we need to keep it all. */ -#if 0 - if (is_space[c]) - SKIP_ALL_WHITE_SPACE (buf); - else -#endif - if (c == '\"' || c == '\\') /* escape these chars */ - totlen++; - } - argptr->stringified_length = totlen; - } - return result; -} - -/* Scan text from START (inclusive) up to LIMIT (exclusive), - taken from the expansion of MACRO, - counting parens in *DEPTHPTR, - and return if reach LIMIT - or before a `)' that would make *DEPTHPTR negative - or before a comma when *DEPTHPTR is zero. - Single and double quotes are matched and termination - is inhibited within them. Comments also inhibit it. - Value returned is pointer to stopping place. - - Increment *NEWLINES each time a newline is passed. - REST_ARGS notifies macarg1 that it should absorb the rest of the args. - Set *COMMENTS to 1 if a comment is seen. */ - -static U_CHAR * -macarg1 (start, limit, macro, depthptr, newlines, comments, rest_args) - U_CHAR *start; - register U_CHAR *limit; - struct hashnode *macro; - int *depthptr, *newlines, *comments; - int rest_args; -{ - register U_CHAR *bp = start; - - while (bp < limit) { - switch (*bp) { - case '(': - (*depthptr)++; - break; - case ')': - if (--(*depthptr) < 0) - return bp; - break; - case '\\': - /* Traditionally, backslash makes following char not special. */ - if (traditional && bp + 1 < limit && bp[1] != '\n') - bp++; - break; - case '\n': - ++*newlines; - break; - case '/': - if (macro) - break; - if (bp[1] == '\\' && bp[2] == '\n') - newline_fix (bp + 1); - if (bp[1] == '*') { - *comments = 1; - for (bp += 2; bp < limit; bp++) { - if (*bp == '\n') - ++*newlines; - else if (*bp == '*') { - if (bp[-1] == '/' && warn_comments) - warning ("`/*' within comment"); - if (bp[1] == '\\' && bp[2] == '\n') - newline_fix (bp + 1); - if (bp[1] == '/') { - bp++; - break; - } - } - else - { -#ifdef MULTIBYTE_CHARS - /* CYGNUS LOCAL chill */ - if (! chill) - /* END CYGNUS LOCAL chill */ - { - int length; - length = local_mblen (bp, limit - bp); - if (length > 1) - bp += (length - 1); - } -#endif - } - } - } else if (bp[1] == '/' && cplusplus_comments) { - *comments = 1; - for (bp += 2; bp < limit; bp++) { - if (*bp == '\n') { - ++*newlines; - break; - } - if (*bp == '\\' && bp + 1 < limit && bp[1] == '\n') - { - ++*newlines; - if (warn_comments) - warning ("multiline `//' comment"); - ++bp; - } - else - { -#ifdef MULTIBYTE_CHARS - /* CYGNUS LOCAL chill */ - if (! chill) - /* END CYGNUS LOCAL chill */ - { - int length; - length = local_mblen (bp, limit - bp); - if (length > 1) - bp += (length - 1); - } -#endif - } - } - } - break; - case '\'': - case '\"': - { - int quotec; - for (quotec = *bp++; bp + 1 < limit && *bp != quotec; bp++) { - if (*bp == '\\') { - bp++; - if (*bp == '\n') - ++*newlines; - if (!macro) { - while (*bp == '\\' && bp[1] == '\n') { - bp += 2; - ++*newlines; - } - } - } else if (*bp == '\n') { - ++*newlines; - if (quotec == '\'') - break; - } - else - { -#ifdef MULTIBYTE_CHARS - /* CYGNUS LOCAL chill */ - if (! chill) - /* END CYGNUS LOCAL chill */ - { - int length; - length = local_mblen (bp, limit - bp); - if (length > 1) - bp += (length - 1); - } -#endif - } - } - } - break; - case ',': - /* if we've returned to lowest level and we aren't absorbing all args */ - if ((*depthptr) == 0 && rest_args == 0) - return bp; - break; - } - bp++; - } - - return bp; -} - -/* Discard comments and duplicate newlines - in the string of length LENGTH at START, - except inside of string constants. - The string is copied into itself with its beginning staying fixed. - - NEWLINES is the number of newlines that must be duplicated. - We assume that that much extra space is available past the end - of the string. */ - -static int -discard_comments (start, length, newlines) - U_CHAR *start; - int length; - int newlines; -{ - register U_CHAR *ibp; - register U_CHAR *obp; - register U_CHAR *limit; - register int c; - - /* If we have newlines to duplicate, copy everything - that many characters up. Then, in the second part, - we will have room to insert the newlines - while copying down. - NEWLINES may actually be too large, because it counts - newlines in string constants, and we don't duplicate those. - But that does no harm. */ - if (newlines > 0) { - ibp = start + length; - obp = ibp + newlines; - limit = start; - while (limit != ibp) - *--obp = *--ibp; - } - - ibp = start + newlines; - limit = start + length + newlines; - obp = start; - - while (ibp < limit) { - *obp++ = c = *ibp++; - switch (c) { - case '\n': - /* Duplicate the newline. */ - *obp++ = '\n'; - break; - - case '\\': - if (*ibp == '\n') { - obp--; - ibp++; - } - break; - - case '/': - if (*ibp == '\\' && ibp[1] == '\n') - newline_fix (ibp); - /* Delete any comment. */ - if (cplusplus_comments && ibp[0] == '/') { - /* Comments are equivalent to spaces. */ - obp[-1] = ' '; - ibp++; - while (ibp < limit) - { - if (*ibp == '\n') - break; - if (*ibp == '\\' && ibp + 1 < limit && ibp[1] == '\n') - ibp++; - else - { -#ifdef MULTIBYTE_CHARS - /* CYGNUS LOCAL chill */ - if (! chill) - /* END CYGNUS LOCAL chill */ - { - int length = local_mblen (ibp, limit - ibp); - if (length > 1) - ibp += (length - 1); - } -#endif - } - ibp++; - } - break; - } - if (ibp[0] != '*' || ibp + 1 >= limit) - break; - /* Comments are equivalent to spaces. - For -traditional, a comment is equivalent to nothing. */ - if (traditional) - obp--; - else - obp[-1] = ' '; - while (++ibp < limit) { - if (ibp[0] == '*') { - if (ibp[1] == '\\' && ibp[2] == '\n') - newline_fix (ibp + 1); - if (ibp[1] == '/') { - ibp += 2; - break; - } - } - else - { -#ifdef MULTIBYTE_CHARS - /* CYGNUS LOCAL chill */ - if (! chill) - /* END CYGNUS LOCAL chill */ - { - int length = local_mblen (ibp, limit - ibp); - if (length > 1) - ibp += (length - 1); - } -#endif - } - } - break; - - case '\'': - case '\"': - /* Notice and skip strings, so that we don't - think that comments start inside them, - and so we don't duplicate newlines in them. */ - { - int quotec = c; - while (ibp < limit) { - *obp++ = c = *ibp++; - if (c == quotec) - break; - if (c == '\n') - { - if (quotec == '\'') - break; - } - else if (c == '\\') { - if (ibp < limit && *ibp == '\n') { - ibp++; - obp--; - } else { - while (*ibp == '\\' && ibp[1] == '\n') - ibp += 2; - if (ibp < limit) - *obp++ = *ibp++; - } - } - else - { -#ifdef MULTIBYTE_CHARS - /* CYGNUS LOCAL chill */ - if (! chill) - /* END CYGNUS LOCAL chill */ - { - int length; - ibp--; - length = local_mblen (ibp, limit - ibp); - if (length > 1) - { - obp--; - bcopy (ibp, obp, length); - ibp += length; - obp += length; - } - else - ibp++; - } -#endif - } - } - } - break; - } - } - - return obp - start; -} - -/* Turn newlines to spaces in the string of length LENGTH at START, - except inside of string constants. - The string is copied into itself with its beginning staying fixed. */ - -static int -change_newlines (start, length) - U_CHAR *start; - int length; -{ - register U_CHAR *ibp; - register U_CHAR *obp; - register U_CHAR *limit; - register int c; - - ibp = start; - limit = start + length; - obp = start; - - while (ibp < limit) { - *obp++ = c = *ibp++; - switch (c) { - case '\n': - /* If this is a NEWLINE NEWLINE, then this is a real newline in the - string. Skip past the newline and its duplicate. - Put a space in the output. */ - if (*ibp == '\n') - { - ibp++; - obp--; - *obp++ = ' '; - } - break; - - case '\'': - case '\"': - /* Notice and skip strings, so that we don't delete newlines in them. */ - { - int quotec = c; - while (ibp < limit) { - *obp++ = c = *ibp++; - if (c == quotec) - break; - else if (c == '\\' && ibp < limit && *ibp == '\n') - *obp++ = *ibp++; - else if (c == '\n') - { - if (quotec == '\'') - break; - } - else - { -#ifdef MULTIBYTE_CHARS - /* CYGNUS LOCAL chill */ - if (! chill) - /* END CYGNUS LOCAL chill */ - { - int length; - ibp--; - length = local_mblen (ibp, limit - ibp); - if (length > 1) - { - obp--; - bcopy (ibp, obp, length); - ibp += length; - obp += length; - } - else - ibp++; - } -#endif - } - } - } - break; - } - } - - return obp - start; -} - -/* my_strerror - return the descriptive text associated with an - `errno' code. */ - -static char * -my_strerror (errnum) - int errnum; -{ - char *result; - -#ifndef HAVE_STRERROR - result = (char *) ((errnum < sys_nerr) ? sys_errlist[errnum] : 0); -#else - result = strerror (errnum); -#endif - - if (!result) - result = "undocumented I/O error"; - - return result; -} - -/* error - print error message and increment count of errors. */ - -void -error VPROTO ((char * msg, ...)) -{ -#ifndef ANSI_PROTOTYPES - char * msg; -#endif - va_list args; - - VA_START (args, msg); - -#ifndef ANSI_PROTOTYPES - msg = va_arg (args, char *); -#endif - - verror (msg, args); - va_end (args); -} - -static void -verror (msg, args) - char *msg; - va_list args; -{ - int i; - FILE_BUF *ip = NULL; - - print_containing_files (); - - for (i = indepth; i >= 0; i--) - if (instack[i].fname != NULL) { - ip = &instack[i]; - break; - } - - if (ip != NULL) { - eprint_string (ip->nominal_fname, ip->nominal_fname_len); - fprintf (stderr, ":%d: ", ip->lineno); - } - vfprintf (stderr, msg, args); - fprintf (stderr, "\n"); - errors++; -} - -/* Error including a message from `errno'. */ - -static void -error_from_errno (name) - char *name; -{ - int e = errno; - int i; - FILE_BUF *ip = NULL; - - print_containing_files (); - - for (i = indepth; i >= 0; i--) - if (instack[i].fname != NULL) { - ip = &instack[i]; - break; - } - - if (ip != NULL) { - eprint_string (ip->nominal_fname, ip->nominal_fname_len); - fprintf (stderr, ":%d: ", ip->lineno); - } - - fprintf (stderr, "%s: %s\n", name, my_strerror (e)); - - errors++; -} - -/* Print error message but don't count it. */ - -void -warning VPROTO ((char * msg, ...)) -{ -#ifndef ANSI_PROTOTYPES - char * msg; -#endif - va_list args; - - VA_START (args, msg); - -#ifndef ANSI_PROTOTYPES - msg = va_arg (args, char *); -#endif - - vwarning (msg, args); - va_end (args); -} - -static void -vwarning (msg, args) - char *msg; - va_list args; -{ - int i; - FILE_BUF *ip = NULL; - - if (inhibit_warnings) - return; - - if (warnings_are_errors) - errors++; - - print_containing_files (); - - for (i = indepth; i >= 0; i--) - if (instack[i].fname != NULL) { - ip = &instack[i]; - break; - } - - if (ip != NULL) { - eprint_string (ip->nominal_fname, ip->nominal_fname_len); - fprintf (stderr, ":%d: ", ip->lineno); - } - fprintf (stderr, "warning: "); - vfprintf (stderr, msg, args); - fprintf (stderr, "\n"); -} - -static void -error_with_line VPROTO ((int line, char * msg, ...)) -{ -#ifndef ANSI_PROTOTYPES - int line; - char * msg; -#endif - va_list args; - - VA_START (args, msg); - -#ifndef ANSI_PROTOTYPES - line = va_arg (args, int); - msg = va_arg (args, char *); -#endif - - verror_with_line (line, msg, args); - va_end (args); -} - -static void -verror_with_line (line, msg, args) - int line; - char *msg; - va_list args; -{ - int i; - FILE_BUF *ip = NULL; - - print_containing_files (); - - for (i = indepth; i >= 0; i--) - if (instack[i].fname != NULL) { - ip = &instack[i]; - break; - } - - if (ip != NULL) { - eprint_string (ip->nominal_fname, ip->nominal_fname_len); - fprintf (stderr, ":%d: ", line); - } - vfprintf (stderr, msg, args); - fprintf (stderr, "\n"); - errors++; -} - -static void -warning_with_line VPROTO ((int line, char * msg, ...)) -{ -#ifndef ANSI_PROTOTYPES - int line; - char * msg; -#endif - va_list args; - - VA_START (args, msg); - -#ifndef ANSI_PROTOTYPES - line = va_arg (args, int); - msg = va_arg (args, char *); -#endif - - vwarning_with_line (line, msg, args); - va_end (args); -} - -static void -vwarning_with_line (line, msg, args) - int line; - char *msg; - va_list args; -{ - int i; - FILE_BUF *ip = NULL; - - if (inhibit_warnings) - return; - - if (warnings_are_errors) - errors++; - - print_containing_files (); - - for (i = indepth; i >= 0; i--) - if (instack[i].fname != NULL) { - ip = &instack[i]; - break; - } - - if (ip != NULL) { - eprint_string (ip->nominal_fname, ip->nominal_fname_len); - fprintf (stderr, line ? ":%d: " : ": ", line); - } - fprintf (stderr, "warning: "); - vfprintf (stderr, msg, args); - fprintf (stderr, "\n"); -} - -/* Print an error message and maybe count it. */ - -void -pedwarn VPROTO ((char * msg, ...)) -{ -#ifndef ANSI_PROTOTYPES - char * msg; -#endif - va_list args; - - VA_START (args, msg); - -#ifndef ANSI_PROTOTYPES - msg = va_arg (args, char *); -#endif - - if (pedantic_errors) - verror (msg, args); - else - vwarning (msg, args); - va_end (args); -} - -void -pedwarn_with_line VPROTO ((int line, char * msg, ...)) -{ -#ifndef ANSI_PROTOTYPES - int line; - char * msg; -#endif - va_list args; - - VA_START (args, msg); - -#ifndef ANSI_PROTOTYPES - line = va_arg (args, int); - msg = va_arg (args, char *); -#endif - - if (pedantic_errors) - verror_with_line (line, msg, args); - else - vwarning_with_line (line, msg, args); - va_end (args); -} - -/* Report a warning (or an error if pedantic_errors) - giving specified file name and line number, not current. */ - -static void -pedwarn_with_file_and_line VPROTO ((char *file, size_t file_len, int line, - char * msg, ...)) -{ -#ifndef ANSI_PROTOTYPES - char *file; - size_t file_len; - int line; - char * msg; -#endif - va_list args; - - if (!pedantic_errors && inhibit_warnings) - return; - - VA_START (args, msg); - -#ifndef ANSI_PROTOTYPES - file = va_arg (args, char *); - file_len = va_arg (args, size_t); - line = va_arg (args, int); - msg = va_arg (args, char *); -#endif - - if (file) { - eprint_string (file, file_len); - fprintf (stderr, ":%d: ", line); - } - if (pedantic_errors) - errors++; - if (!pedantic_errors) - fprintf (stderr, "warning: "); - - vfprintf (stderr, msg, args); - va_end (args); - fprintf (stderr, "\n"); -} - -/* Print the file names and line numbers of the #include - directives which led to the current file. */ - -static void -print_containing_files () -{ - FILE_BUF *ip = NULL; - int i; - int first = 1; - - /* If stack of files hasn't changed since we last printed - this info, don't repeat it. */ - if (last_error_tick == input_file_stack_tick) - return; - - for (i = indepth; i >= 0; i--) - if (instack[i].fname != NULL) { - ip = &instack[i]; - break; - } - - /* Give up if we don't find a source file. */ - if (ip == NULL) - return; - - /* Find the other, outer source files. */ - for (i--; i >= 0; i--) - if (instack[i].fname != NULL) { - ip = &instack[i]; - if (first) { - first = 0; - fprintf (stderr, "In file included"); - } else { - fprintf (stderr, ",\n "); - } - - fprintf (stderr, " from "); - eprint_string (ip->nominal_fname, ip->nominal_fname_len); - fprintf (stderr, ":%d", ip->lineno); - } - if (! first) - fprintf (stderr, ":\n"); - - /* Record we have printed the status as of this time. */ - last_error_tick = input_file_stack_tick; -} - -/* Return the line at which an error occurred. - The error is not necessarily associated with the current spot - in the input stack, so LINE says where. LINE will have been - copied from ip->lineno for the current input level. - If the current level is for a file, we return LINE. - But if the current level is not for a file, LINE is meaningless. - In that case, we return the lineno of the innermost file. */ - -static int -line_for_error (line) - int line; -{ - int i; - int line1 = line; - - for (i = indepth; i >= 0; ) { - if (instack[i].fname != 0) - return line1; - i--; - if (i < 0) - return 0; - line1 = instack[i].lineno; - } - abort (); - /*NOTREACHED*/ - return 0; -} - -/* - * If OBUF doesn't have NEEDED bytes after OPTR, make it bigger. - * - * As things stand, nothing is ever placed in the output buffer to be - * removed again except when it's KNOWN to be part of an identifier, - * so flushing and moving down everything left, instead of expanding, - * should work ok. - */ - -/* You might think void was cleaner for the return type, - but that would get type mismatch in check_expand in strict ANSI. */ - -static int -grow_outbuf (obuf, needed) - register FILE_BUF *obuf; - register int needed; -{ - register U_CHAR *p; - int minsize; - - if (obuf->length - (obuf->bufp - obuf->buf) > needed) - return 0; - - /* Make it at least twice as big as it is now. */ - obuf->length *= 2; - /* Make it have at least 150% of the free space we will need. */ - minsize = (3 * needed) / 2 + (obuf->bufp - obuf->buf); - if (minsize > obuf->length) - obuf->length = minsize; - - if ((p = (U_CHAR *) xrealloc (obuf->buf, obuf->length)) == NULL) - memory_full (); - - obuf->bufp = p + (obuf->bufp - obuf->buf); - obuf->buf = p; - - return 0; -} - -/* Symbol table for macro names and special symbols */ - -/* - * install a name in the main hash table, even if it is already there. - * name stops with first non alphanumeric, except leading '#'. - * caller must check against redefinition if that is desired. - * delete_macro () removes things installed by install () in fifo order. - * this is important because of the `defined' special symbol used - * in #if, and also if pushdef/popdef directives are ever implemented. - * - * If LEN is >= 0, it is the length of the name. - * Otherwise, compute the length by scanning the entire name. - * - * If HASH is >= 0, it is the precomputed hash code. - * Otherwise, compute the hash code. - */ - -static HASHNODE * -install (name, len, type, value, hash) - U_CHAR *name; - int len; - enum node_type type; - char *value; - int hash; -{ - register HASHNODE *hp; - register int i, bucket; - register U_CHAR *p, *q; - - if (len < 0) { - p = name; - while (is_idchar[*p]) - p++; - len = p - name; - } - - if (hash < 0) - hash = hashf (name, len, HASHSIZE); - - i = sizeof (HASHNODE) + len + 1; - hp = (HASHNODE *) xmalloc (i); - bucket = hash; - hp->bucket_hdr = &hashtab[bucket]; - hp->next = hashtab[bucket]; - hashtab[bucket] = hp; - hp->prev = NULL; - if (hp->next != NULL) - hp->next->prev = hp; - hp->type = type; - hp->length = len; - hp->value.cpval = value; - hp->name = ((U_CHAR *) hp) + sizeof (HASHNODE); - p = hp->name; - q = name; - for (i = 0; i < len; i++) - *p++ = *q++; - hp->name[len] = 0; - return hp; -} - -/* - * find the most recent hash node for name "name" (ending with first - * non-identifier char) installed by install - * - * If LEN is >= 0, it is the length of the name. - * Otherwise, compute the length by scanning the entire name. - * - * If HASH is >= 0, it is the precomputed hash code. - * Otherwise, compute the hash code. - */ - -HASHNODE * -lookup (name, len, hash) - U_CHAR *name; - int len; - int hash; -{ - register U_CHAR *bp; - register HASHNODE *bucket; - - if (len < 0) { - for (bp = name; is_idchar[*bp]; bp++) ; - len = bp - name; - } - - if (hash < 0) - hash = hashf (name, len, HASHSIZE); - - bucket = hashtab[hash]; - while (bucket) { - if (bucket->length == len && bcmp (bucket->name, name, len) == 0) - return bucket; - bucket = bucket->next; - } - return NULL; -} - -/* - * Delete a hash node. Some weirdness to free junk from macros. - * More such weirdness will have to be added if you define more hash - * types that need it. - */ - -/* Note that the DEFINITION of a macro is removed from the hash table - but its storage is not freed. This would be a storage leak - except that it is not reasonable to keep undefining and redefining - large numbers of macros many times. - In any case, this is necessary, because a macro can be #undef'd - in the middle of reading the arguments to a call to it. - If #undef freed the DEFINITION, that would crash. */ - -static void -delete_macro (hp) - HASHNODE *hp; -{ - - if (hp->prev != NULL) - hp->prev->next = hp->next; - if (hp->next != NULL) - hp->next->prev = hp->prev; - - /* Make sure that the bucket chain header that the deleted guy was - on points to the right thing afterwards. */ - if (hp == *hp->bucket_hdr) - *hp->bucket_hdr = hp->next; - -#if 0 - if (hp->type == T_MACRO) { - DEFINITION *d = hp->value.defn; - struct reflist *ap, *nextap; - - for (ap = d->pattern; ap != NULL; ap = nextap) { - nextap = ap->next; - free (ap); - } - free (d); - } -#endif - free (hp); -} - -/* - * return hash function on name. must be compatible with the one - * computed a step at a time, elsewhere - */ - -static int -hashf (name, len, hashsize) - register U_CHAR *name; - register int len; - int hashsize; -{ - register int r = 0; - - while (len--) - r = HASHSTEP (r, *name++); - - return MAKE_POS (r) % hashsize; -} - - -/* Dump the definition of a single macro HP to OF. */ - -static void -dump_single_macro (hp, of) - register HASHNODE *hp; - FILE *of; -{ - register DEFINITION *defn = hp->value.defn; - struct reflist *ap; - int offset; - int concat; - - - /* Print the definition of the macro HP. */ - - fprintf (of, "#define %s", hp->name); - - if (defn->nargs >= 0) { - int i; - - fprintf (of, "("); - for (i = 0; i < defn->nargs; i++) { - dump_arg_n (defn, i, of); - if (i + 1 < defn->nargs) - fprintf (of, ", "); - } - fprintf (of, ")"); - } - - fprintf (of, " "); - - offset = 0; - concat = 0; - for (ap = defn->pattern; ap != NULL; ap = ap->next) { - dump_defn_1 (defn->expansion, offset, ap->nchars, of); - offset += ap->nchars; - if (!traditional) { - if (ap->nchars != 0) - concat = 0; - if (ap->stringify) { - switch (ap->stringify) { - case SHARP_TOKEN: fprintf (of, "#"); break; - case WHITE_SHARP_TOKEN: fprintf (of, "# "); break; - case PERCENT_COLON_TOKEN: fprintf (of, "%%:"); break; - case WHITE_PERCENT_COLON_TOKEN: fprintf (of, "%%: "); break; - default: abort (); - } - } - if (ap->raw_before != 0) { - if (concat) { - switch (ap->raw_before) { - case WHITE_SHARP_TOKEN: - case WHITE_PERCENT_COLON_TOKEN: - fprintf (of, " "); - break; - default: - break; - } - } else { - switch (ap->raw_before) { - case SHARP_TOKEN: fprintf (of, "##"); break; - case WHITE_SHARP_TOKEN: fprintf (of, "## "); break; - case PERCENT_COLON_TOKEN: fprintf (of, "%%:%%:"); break; - case WHITE_PERCENT_COLON_TOKEN: fprintf (of, "%%:%%: "); break; - default: abort (); - } - } - } - concat = 0; - } - dump_arg_n (defn, ap->argno, of); - if (!traditional && ap->raw_after != 0) { - switch (ap->raw_after) { - case SHARP_TOKEN: fprintf (of, "##"); break; - case WHITE_SHARP_TOKEN: fprintf (of, " ##"); break; - case PERCENT_COLON_TOKEN: fprintf (of, "%%:%%:"); break; - case WHITE_PERCENT_COLON_TOKEN: fprintf (of, " %%:%%:"); break; - default: abort (); - } - concat = 1; - } - } - dump_defn_1 (defn->expansion, offset, defn->length - offset, of); - fprintf (of, "\n"); -} - -/* Dump all macro definitions as #defines to stdout. */ - -static void -dump_all_macros () -{ - int bucket; - - for (bucket = 0; bucket < HASHSIZE; bucket++) { - register HASHNODE *hp; - - for (hp = hashtab[bucket]; hp; hp= hp->next) { - if (hp->type == T_MACRO) - dump_single_macro (hp, stdout); - } - } -} - -/* Output to OF a substring of a macro definition. - BASE is the beginning of the definition. - Output characters START thru LENGTH. - Unless traditional, discard newlines outside of strings, thus - converting funny-space markers to ordinary spaces. */ - -static void -dump_defn_1 (base, start, length, of) - U_CHAR *base; - int start; - int length; - FILE *of; -{ - U_CHAR *p = base + start; - U_CHAR *limit = base + start + length; - - if (traditional) - fwrite (p, sizeof (*p), length, of); - else { - while (p < limit) { - if (*p == '\"' || *p =='\'') { - U_CHAR *p1 = skip_quoted_string (p, limit, 0, NULL_PTR, - NULL_PTR, NULL_PTR); - fwrite (p, sizeof (*p), p1 - p, of); - p = p1; - } else { - if (*p != '\n') - putc (*p, of); - p++; - } - } - } -} - -/* Print the name of argument number ARGNUM of macro definition DEFN - to OF. - Recall that DEFN->args.argnames contains all the arg names - concatenated in reverse order with comma-space in between. */ - -static void -dump_arg_n (defn, argnum, of) - DEFINITION *defn; - int argnum; - FILE *of; -{ - register U_CHAR *p = defn->args.argnames; - while (argnum + 1 < defn->nargs) { - p = (U_CHAR *) index ((char *) p, ' ') + 1; - argnum++; - } - - while (*p && *p != ',') { - putc (*p, of); - p++; - } -} - -/* Initialize syntactic classifications of characters. */ - -static void -initialize_char_syntax () -{ - register int i; - - /* - * Set up is_idchar and is_idstart tables. These should be - * faster than saying (is_alpha (c) || c == '_'), etc. - * Set up these things before calling any routines tthat - * refer to them. - */ - for (i = 'a'; i <= 'z'; i++) { - is_idchar[i - 'a' + 'A'] = 1; - is_idchar[i] = 1; - is_idstart[i - 'a' + 'A'] = 1; - is_idstart[i] = 1; - } - for (i = '0'; i <= '9'; i++) - is_idchar[i] = 1; - is_idchar['_'] = 1; - is_idstart['_'] = 1; - is_idchar['$'] = 1; - is_idstart['$'] = 1; - - /* horizontal space table */ - is_hor_space[' '] = 1; - is_hor_space['\t'] = 1; - is_hor_space['\v'] = 1; - is_hor_space['\f'] = 1; - is_hor_space['\r'] = 1; - - is_space[' '] = 1; - is_space['\t'] = 1; - is_space['\v'] = 1; - is_space['\f'] = 1; - is_space['\n'] = 1; - is_space['\r'] = 1; - - char_name['\v'] = "vertical tab"; - char_name['\f'] = "formfeed"; - char_name['\r'] = "carriage return"; -} - -/* Initialize the built-in macros. */ - -static void -initialize_builtins (inp, outp) - FILE_BUF *inp; - FILE_BUF *outp; -{ - install ((U_CHAR *) "__LINE__", -1, T_SPECLINE, NULL_PTR, -1); - install ((U_CHAR *) "__DATE__", -1, T_DATE, NULL_PTR, -1); - install ((U_CHAR *) "__FILE__", -1, T_FILE, NULL_PTR, -1); - install ((U_CHAR *) "__BASE_FILE__", -1, T_BASE_FILE, NULL_PTR, -1); - install ((U_CHAR *) "__INCLUDE_LEVEL__", -1, T_INCLUDE_LEVEL, NULL_PTR, -1); - install ((U_CHAR *) "__VERSION__", -1, T_VERSION, NULL_PTR, -1); -#ifndef NO_BUILTIN_SIZE_TYPE - install ((U_CHAR *) "__SIZE_TYPE__", -1, T_SIZE_TYPE, NULL_PTR, -1); -#endif -#ifndef NO_BUILTIN_PTRDIFF_TYPE - install ((U_CHAR *) "__PTRDIFF_TYPE__ ", -1, T_PTRDIFF_TYPE, NULL_PTR, -1); -#endif -/* CYGNUS LOCAL vmakarov */ -#ifndef NO_BUILTIN_WCHAR_TYPE -/* END CYGNUS LOCAL */ - install ((U_CHAR *) "__WCHAR_TYPE__", -1, T_WCHAR_TYPE, NULL_PTR, -1); -/* CYGNUS LOCAL vmakarov */ -#endif -/* END CYGNUS LOCAL */ - install ((U_CHAR *) "__USER_LABEL_PREFIX__", -1, T_USER_LABEL_PREFIX_TYPE, - NULL_PTR, -1); - install ((U_CHAR *) "__REGISTER_PREFIX__", -1, T_REGISTER_PREFIX_TYPE, - NULL_PTR, -1); - install ((U_CHAR *) "__IMMEDIATE_PREFIX__", -1, T_IMMEDIATE_PREFIX_TYPE, - NULL_PTR, -1); - install ((U_CHAR *) "__TIME__", -1, T_TIME, NULL_PTR, -1); - if (!traditional) { - install ((U_CHAR *) "__STDC__", -1, T_CONST, "1", -1); - install ((U_CHAR *) "__STDC_VERSION__", -1, T_CONST, "199409L", -1); - } - if (objc) - install ((U_CHAR *) "__OBJC__", -1, T_CONST, "1", -1); -/* This is supplied using a -D by the compiler driver - so that it is present only when truly compiling with GNU C. */ -/* install ((U_CHAR *) "__GNUC__", -1, T_CONST, "2", -1); */ - install ((U_CHAR *) "__HAVE_BUILTIN_SETJMP__", -1, T_CONST, "1", -1); - - if (debug_output) - { - char directive[2048]; - U_CHAR *udirective = (U_CHAR *) directive; - register struct directive *dp = &directive_table[0]; - struct tm *timebuf = timestamp (); - - sprintf (directive, " __BASE_FILE__ \"%s\"\n", - instack[0].nominal_fname); - output_line_directive (inp, outp, 0, same_file); - pass_thru_directive (udirective, &udirective[strlen (directive)], - outp, dp); - - sprintf (directive, " __VERSION__ \"%s\"\n", version_string); - output_line_directive (inp, outp, 0, same_file); - pass_thru_directive (udirective, &udirective[strlen (directive)], - outp, dp); - -#ifndef NO_BUILTIN_SIZE_TYPE - sprintf (directive, " __SIZE_TYPE__ %s\n", SIZE_TYPE); - output_line_directive (inp, outp, 0, same_file); - pass_thru_directive (udirective, &udirective[strlen (directive)], - outp, dp); -#endif - -#ifndef NO_BUILTIN_PTRDIFF_TYPE - sprintf (directive, " __PTRDIFF_TYPE__ %s\n", PTRDIFF_TYPE); - output_line_directive (inp, outp, 0, same_file); - pass_thru_directive (udirective, &udirective[strlen (directive)], - outp, dp); -#endif - -/* CYGNUS LOCAL vmakarov */ -#ifndef NO_BUILTIN_WCHAR_TYPE -/* END CYGNUS LOCAL */ - sprintf (directive, " __WCHAR_TYPE__ %s\n", wchar_type); - output_line_directive (inp, outp, 0, same_file); - pass_thru_directive (udirective, &udirective[strlen (directive)], - outp, dp); -/* CYGNUS LOCAL vmakarov */ -#endif -/* END CYGNUS LOCAL */ - - sprintf (directive, " __DATE__ \"%s %2d %4d\"\n", - monthnames[timebuf->tm_mon], - timebuf->tm_mday, timebuf->tm_year + 1900); - output_line_directive (inp, outp, 0, same_file); - pass_thru_directive (udirective, &udirective[strlen (directive)], - outp, dp); - - sprintf (directive, " __TIME__ \"%02d:%02d:%02d\"\n", - timebuf->tm_hour, timebuf->tm_min, timebuf->tm_sec); - output_line_directive (inp, outp, 0, same_file); - pass_thru_directive (udirective, &udirective[strlen (directive)], - outp, dp); - - if (!traditional) - { - sprintf (directive, " __STDC__ 1"); - output_line_directive (inp, outp, 0, same_file); - pass_thru_directive (udirective, &udirective[strlen (directive)], - outp, dp); - } - if (objc) - { - sprintf (directive, " __OBJC__ 1"); - output_line_directive (inp, outp, 0, same_file); - pass_thru_directive (udirective, &udirective[strlen (directive)], - outp, dp); - } - } -} - -/* - * process a given definition string, for initialization - * If STR is just an identifier, define it with value 1. - * If STR has anything after the identifier, then it should - * be identifier=definition. - */ - -static void -make_definition (str) - char *str; -{ - FILE_BUF *ip; - struct directive *kt; - U_CHAR *buf, *p; - - p = buf = (U_CHAR *) str; - if (!is_idstart[*p]) { - error ("malformed option `-D %s'", str); - return; - } - while (is_idchar[*++p]) - ; - if (*p == '(') { - while (is_idchar[*++p] || *p == ',' || is_hor_space[*p]) - ; - if (*p++ != ')') - p = (U_CHAR *) str; /* Error */ - } - if (*p == 0) { - buf = (U_CHAR *) alloca (p - buf + 4); - strcpy ((char *)buf, str); - strcat ((char *)buf, " 1"); - } else if (*p != '=') { - error ("malformed option `-D %s'", str); - return; - } else { - U_CHAR *q; - /* Copy the entire option so we can modify it. */ - buf = (U_CHAR *) alloca (2 * strlen (str) + 1); - strncpy ((char *) buf, str, p - (U_CHAR *) str); - /* Change the = to a space. */ - buf[p - (U_CHAR *) str] = ' '; - /* Scan for any backslash-newline and remove it. */ - p++; - q = &buf[p - (U_CHAR *) str]; - while (*p) { - if (*p == '\"' || *p == '\'') { - int unterminated = 0; - U_CHAR *p1 = skip_quoted_string (p, p + strlen ((char *) p), 0, - NULL_PTR, NULL_PTR, &unterminated); - if (unterminated) - return; - while (p != p1) - *q++ = *p++; - } else if (*p == '\\' && p[1] == '\n') - p += 2; - /* Change newline chars into newline-markers. */ - else if (*p == '\n') - { - *q++ = '\n'; - *q++ = '\n'; - p++; - } - else - *q++ = *p++; - } - *q = 0; - } - - ip = &instack[++indepth]; - ip->nominal_fname = ip->fname = "*Initialization*"; - ip->nominal_fname_len = strlen (ip->nominal_fname); - - ip->buf = ip->bufp = buf; - ip->length = strlen ((char *) buf); - ip->lineno = 1; - ip->macro = 0; - ip->free_ptr = 0; - ip->if_stack = if_stack; - ip->system_header_p = 0; - - for (kt = directive_table; kt->type != T_DEFINE; kt++) - ; - - /* Pass NULL instead of OP, since this is a "predefined" macro. */ - do_define (buf, buf + strlen ((char *) buf), NULL_PTR, kt); - --indepth; -} - -/* JF, this does the work for the -U option */ - -static void -make_undef (str, op) - char *str; - FILE_BUF *op; -{ - FILE_BUF *ip; - struct directive *kt; - - ip = &instack[++indepth]; - ip->nominal_fname = ip->fname = "*undef*"; - ip->nominal_fname_len = strlen (ip->nominal_fname); - - ip->buf = ip->bufp = (U_CHAR *) str; - ip->length = strlen (str); - ip->lineno = 1; - ip->macro = 0; - ip->free_ptr = 0; - ip->if_stack = if_stack; - ip->system_header_p = 0; - - for (kt = directive_table; kt->type != T_UNDEF; kt++) - ; - - do_undef ((U_CHAR *) str, (U_CHAR *) str + strlen (str), op, kt); - --indepth; -} - -/* Process the string STR as if it appeared as the body of a #assert. - OPTION is the option name for which STR was the argument. */ - -static void -make_assertion (option, str) - char *option; - char *str; -{ - FILE_BUF *ip; - struct directive *kt; - U_CHAR *buf, *p, *q; - - /* Copy the entire option so we can modify it. */ - buf = (U_CHAR *) alloca (strlen (str) + 1); - strcpy ((char *) buf, str); - /* Scan for any backslash-newline and remove it. */ - p = q = buf; - while (*p) { - if (*p == '\\' && p[1] == '\n') - p += 2; - else - *q++ = *p++; - } - *q = 0; - - p = buf; - if (!is_idstart[*p]) { - error ("malformed option `%s %s'", option, str); - return; - } - while (is_idchar[*++p]) - ; - SKIP_WHITE_SPACE (p); - if (! (*p == 0 || *p == '(')) { - error ("malformed option `%s %s'", option, str); - return; - } - - ip = &instack[++indepth]; - ip->nominal_fname = ip->fname = "*Initialization*"; - ip->nominal_fname_len = strlen (ip->nominal_fname); - - ip->buf = ip->bufp = buf; - ip->length = strlen ((char *) buf); - ip->lineno = 1; - ip->macro = 0; - ip->free_ptr = 0; - ip->if_stack = if_stack; - ip->system_header_p = 0; - - for (kt = directive_table; kt->type != T_ASSERT; kt++) - ; - - /* Pass NULL as output ptr to do_define since we KNOW it never does - any output.... */ - do_assert (buf, buf + strlen ((char *) buf) , NULL_PTR, kt); - --indepth; -} - -#ifndef DIR_SEPARATOR -#define DIR_SEPARATOR '/' -#endif - -/* The previous include prefix, if any, is PREV_FILE_NAME. - Translate any pathnames with COMPONENT. - Allocate a new include prefix whose name is the - simplified concatenation of PREFIX and NAME, - with a trailing / added if needed. - But return 0 if the include prefix should be ignored, - e.g. because it is a duplicate of PREV_FILE_NAME. */ - -static struct file_name_list * -new_include_prefix (prev_file_name, component, prefix, name) - struct file_name_list *prev_file_name; - const char *component; - const char *prefix; - const char *name; -{ - if (name == 0) - fatal ("Directory name missing after command line option"); - - if (*name == 0) - /* Ignore the empty string. */ - return 0; - - prefix = update_path (prefix, component); - name = update_path (name, component); - - { - struct file_name_list *dir - = ((struct file_name_list *) - xmalloc (sizeof (struct file_name_list) - + strlen (prefix) + strlen (name) + 2)); - size_t len; - strcpy (dir->fname, prefix); - strcat (dir->fname, name); - len = simplify_filename (dir->fname); - - /* Convert directory name to a prefix. */ - if (len && dir->fname[len - 1] != DIR_SEPARATOR) { - if (len == 1 && dir->fname[len - 1] == '.') - len = 0; - else - dir->fname[len++] = DIR_SEPARATOR; - dir->fname[len] = 0; - } - - /* Ignore a directory whose name matches the previous one. */ - if (prev_file_name && !strcmp (prev_file_name->fname, dir->fname)) { - /* But treat `-Idir -I- -Idir' as `-I- -Idir'. */ - if (!first_bracket_include) - first_bracket_include = prev_file_name; - free (dir); - return 0; - } - - /* Add a trailing "." if there is a filename. This increases the number - of systems that can stat directories. We remove it below. */ - if (len != 0) - { - dir->fname[len] = '.'; - dir->fname[len + 1] = 0; - } - - /* Ignore a nonexistent directory. */ - if (stat (len ? dir->fname : ".", &dir->st) != 0) { - if (errno != ENOENT && errno != ENOTDIR) - error_from_errno (dir->fname); - free (dir); - return 0; - } - - if (len != 0) - dir->fname[len] = 0; - - /* Ignore a directory whose identity matches the previous one. */ - if (prev_file_name - && INO_T_EQ (prev_file_name->st.st_ino, dir->st.st_ino) - && prev_file_name->st.st_dev == dir->st.st_dev) { - /* But treat `-Idir -I- -Idir' as `-I- -Idir'. */ - if (!first_bracket_include) - first_bracket_include = prev_file_name; - free (dir); - return 0; - } - - dir->next = 0; - dir->c_system_include_path = 0; - dir->got_name_map = 0; - - return dir; - } -} - -/* Append a chain of `struct file_name_list's - to the end of the main include chain. - FIRST is the beginning of the chain to append, and LAST is the end. */ - -static void -append_include_chain (first, last) - struct file_name_list *first, *last; -{ - struct file_name_list *dir; - - if (!first || !last) - return; - - if (include == 0) - include = first; - else - last_include->next = first; - - if (first_bracket_include == 0) - first_bracket_include = first; - - for (dir = first; ; dir = dir->next) { - int len = strlen (dir->fname) + INCLUDE_LEN_FUDGE; - if (len > max_include_len) - max_include_len = len; - if (dir == last) - break; - } - - last->next = NULL; - last_include = last; -} - -/* Place into DST a representation of the file named SRC that is suitable - for `make'. Do not null-terminate DST. Return its length. */ -static int -quote_string_for_make (dst, src) - char *dst; - char *src; -{ - char *p = src; - int i = 0; - for (;;) - { - char c = *p++; - switch (c) - { - case '\0': - case ' ': - case '\t': - { - /* GNU make uses a weird quoting scheme for white space. - A space or tab preceded by 2N+1 backslashes represents - N backslashes followed by space; a space or tab - preceded by 2N backslashes represents N backslashes at - the end of a file name; and backslashes in other - contexts should not be doubled. */ - char *q; - for (q = p - 1; src < q && q[-1] == '\\'; q--) - { - if (dst) - dst[i] = '\\'; - i++; - } - } - if (!c) - return i; - if (dst) - dst[i] = '\\'; - i++; - goto ordinary_char; - - case '$': - if (dst) - dst[i] = c; - i++; - /* Fall through. This can mishandle things like "$(" but - there's no easy fix. */ - default: - ordinary_char: - /* This can mishandle characters in the string "\0\n%*?[\\~"; - exactly which chars are mishandled depends on the `make' version. - We know of no portable solution for this; - even GNU make 3.76.1 doesn't solve the problem entirely. - (Also, '\0' is mishandled due to our calling conventions.) */ - if (dst) - dst[i] = c; - i++; - break; - } - } -} - - -/* Add output to `deps_buffer' for the -M switch. - STRING points to the text to be output. - SPACER is ':' for targets, ' ' for dependencies. */ - -static void -deps_output (string, spacer) - char *string; - int spacer; -{ - int size = quote_string_for_make ((char *) 0, string); -/* CYGNUS LOCAL vmakarov */ - int spacer_size = spacer == ':' ? 2 : 1; -/* END CYGNUS LOCAL */ - - if (size == 0) - return; - -#ifndef MAX_OUTPUT_COLUMNS -#define MAX_OUTPUT_COLUMNS 72 -#endif - if (MAX_OUTPUT_COLUMNS - spacer_size /* CYGNUS LOCAL vmakarov: spacer_size */ - 2 /*` \'*/ < deps_column + size - && 1 < deps_column) { - bcopy (" \\\n ", &deps_buffer[deps_size], 4); - deps_size += 4; - deps_column = 1; - if (spacer == ' ') - spacer = 0; - } - - if (deps_size + 2 * size + 8 > deps_allocated_size) { - deps_allocated_size = (deps_size + 2 * size + 50) * 2; - deps_buffer = xrealloc (deps_buffer, deps_allocated_size); - } - if (spacer == ' ') { - deps_buffer[deps_size++] = ' '; - deps_column++; - } - quote_string_for_make (&deps_buffer[deps_size], string); - deps_size += size; - deps_column += size; - if (spacer == ':') { -/* CYGNUS LOCAL vmakarov */ - deps_buffer[deps_size++] = ' '; -/* END CYGNUS LOCAL */ - deps_buffer[deps_size++] = ':'; - deps_column++; - } - deps_buffer[deps_size] = 0; -} - -static void -fatal VPROTO ((char * msg, ...)) -{ -#ifndef ANSI_PROTOTYPES - char * msg; -#endif - va_list args; - - fprintf (stderr, "%s: ", progname); - VA_START (args, msg); - -#ifndef ANSI_PROTOTYPES - msg = va_arg (args, char *); -#endif - - vfprintf (stderr, msg, args); - va_end (args); - fprintf (stderr, "\n"); - exit (FATAL_EXIT_CODE); -} - -/* More 'friendly' abort that prints the line and file. - config.h can #define abort fancy_abort if you like that sort of thing. */ - -void -fancy_abort () -{ - fatal ("Internal gcc abort."); -} - -static void -perror_with_name (name) - char *name; -{ - fprintf (stderr, "%s: %s: %s\n", progname, name, my_strerror (errno)); - errors++; -} - -static void -pfatal_with_name (name) - char *name; -{ - perror_with_name (name); - exit (FATAL_EXIT_CODE); -} - -/* Handler for SIGPIPE. */ - -static void -pipe_closed (signo) - /* If this is missing, some compilers complain. */ - int signo ATTRIBUTE_UNUSED; -{ - fatal ("output pipe has been closed"); -} - -static void -memory_full () -{ - fatal ("Memory exhausted."); -} - -PTR -xmalloc (size) - size_t size; -{ - register PTR ptr = (PTR) malloc (size); - if (!ptr) - memory_full (); - return ptr; -} - -PTR -xrealloc (old, size) - PTR old; - size_t size; -{ - register PTR ptr; - if (old) - ptr = (PTR) realloc (old, size); - else - ptr = (PTR) malloc (size); - if (!ptr) - memory_full (); - return ptr; -} - -PTR -xcalloc (number, size) - size_t number, size; -{ - register size_t total = number * size; - register PTR ptr = (PTR) malloc (total); - if (!ptr) - memory_full (); - bzero (ptr, total); - return ptr; -} - -static char * -savestring (input) - char *input; -{ - size_t size = strlen (input); - char *output = xmalloc (size + 1); - strcpy (output, input); - return output; -} - - |