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authorYamaArashi <shadow962@live.com>2016-04-25 02:51:34 -0700
committerYamaArashi <shadow962@live.com>2016-04-25 02:51:34 -0700
commit346ed7678fc0a02c1c93c066140f819789f039d9 (patch)
treefdd46f22c809c5c44fdd7fb10070fd5320078b85 /gcc/cpplib.c
parentfa618cd10b1985bae42882f82346b646783892c6 (diff)
remove driver and cpp
Diffstat (limited to 'gcc/cpplib.c')
-rwxr-xr-xgcc/cpplib.c5902
1 files changed, 0 insertions, 5902 deletions
diff --git a/gcc/cpplib.c b/gcc/cpplib.c
deleted file mode 100755
index bc51639..0000000
--- a/gcc/cpplib.c
+++ /dev/null
@@ -1,5902 +0,0 @@
-/* CPP Library.
- Copyright (C) 1986, 87, 89, 92-98, 1999 Free Software Foundation, Inc.
- Contributed by Per Bothner, 1994-95.
- Based on CCCP program 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"
-#include "system.h"
-
-#ifndef STDC_VALUE
-#define STDC_VALUE 1
-#endif
-
-#include <signal.h>
-
-#ifdef HAVE_SYS_TIMES_H
-#include <sys/times.h>
-#endif
-
-#ifdef HAVE_SYS_RESOURCE_H
-# include <sys/resource.h>
-#endif
-
-#include "cpplib.h"
-#include "cpphash.h"
-#include "output.h"
-#include "prefix.h"
-
-#ifndef GET_ENV_PATH_LIST
-#define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv(NAME); } while (0)
-#endif
-
-/* By default, colon separates directories in a path. */
-#ifndef PATH_SEPARATOR
-#define PATH_SEPARATOR ':'
-#endif
-
-#ifndef STANDARD_INCLUDE_DIR
-#define STANDARD_INCLUDE_DIR "/usr/include"
-#endif
-
-/* 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
-#define CPP_WCHAR_TYPE(PFILE) \
- (CPP_OPTIONS(PFILE)->cplusplus ? "__wchar_t" : WCHAR_TYPE)
-/* CYGNUS LOCAL vmakarov */
-#endif
-/* END CYGNUS LOCAL */
-
-/* The string value for __REGISTER_PREFIX__ */
-
-#ifndef REGISTER_PREFIX
-#define REGISTER_PREFIX ""
-#endif
-
-#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)
-
-#define PEEKN(N) (CPP_BUFFER(pfile)->rlimit - CPP_BUFFER(pfile)->cur >= (N) ? CPP_BUFFER(pfile)->cur[N] : EOF)
-#define FORWARD(N) CPP_FORWARD(CPP_BUFFER(pfile), (N))
-#define GETC() CPP_BUF_GET(CPP_BUFFER(pfile))
-#define PEEKC() CPP_BUF_PEEK(CPP_BUFFER(pfile))
-/* CPP_IS_MACRO_BUFFER is true if the buffer contains macro expansion.
- (Note that it is false while we're expanding marco *arguments*.) */
-#define CPP_IS_MACRO_BUFFER(PBUF) ((PBUF)->cleanup == macro_cleanup)
-
-/* 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). */
-
-#define NEWLINE_FIX \
- do {while (PEEKC() == '\\' && PEEKN(1) == '\n') FORWARD(2); } while(0)
-
-/* Same, but assume we've already read the potential '\\' into C. */
-#define NEWLINE_FIX1(C) do { \
- while ((C) == '\\' && PEEKC() == '\n') { FORWARD(1); (C) = GETC(); } \
-} while(0)
-
-struct cpp_pending {
- struct cpp_pending *next;
- char *cmd;
- char *arg;
-};
-
-/* Forward declarations. */
-
-extern void cpp_hash_cleanup (cpp_reader *);
-
-static char *my_strerror (int);
-static void path_include (cpp_reader *, char *);
-static void initialize_builtins (cpp_reader *);
-static void initialize_char_syntax (void);
-#if 0
-static void trigraph_pcp ();
-#endif
-static void validate_else (cpp_reader *, char *);
-static int comp_def_part (int, U_CHAR *, int, U_CHAR *,
- int, int);
-#ifdef abort
-extern void fancy_abort ();
-#endif
-/* CYGNUS LOCAL - obscured headers */
-static int open_include_file_name (cpp_reader*, char *);
-/* END CYGNUS LOCAL - obscured headers */
-static int check_macro_name (cpp_reader *, U_CHAR *, char *);
-static int compare_defs (cpp_reader *,
- DEFINITION *, DEFINITION *);
-static HOST_WIDE_INT eval_if_expression (cpp_reader *);
-static int change_newlines (U_CHAR *, int);
-static void push_macro_expansion (cpp_reader *,
- U_CHAR *, int, HASHNODE *);
-static struct cpp_pending *nreverse_pending (struct cpp_pending *);
-
-static void conditional_skip (cpp_reader *, int,
- enum node_type, U_CHAR *);
-static void skip_if_group (cpp_reader *);
-static int parse_name (cpp_reader *, int);
-static void print_help (void);
-
-/* Last arg to output_line_command. */
-enum file_change_code {same_file, enter_file, leave_file};
-
-/* External declarations. */
-
-extern HOST_WIDE_INT cpp_parse_expr (cpp_reader *);
-
-extern char *version_string;
-extern struct tm *localtime ();
-
-
-/* #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, 1 },
-#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, 1 },
-#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 */
-
-/* `struct directive' defines one #-directive, including how to handle it. */
-
-struct directive {
- int length; /* Length of name */
- int (*func) /* Function to handle directive */
- (cpp_reader *, struct directive *);
- char *name; /* Name of directive */
- enum node_type type; /* Code which describes which directive. */
-};
-
-/* These functions are declared to return int instead of void since they
- are going to be placed in a table and some old compilers have trouble with
- pointers to functions returning void. */
-
-static int do_define (cpp_reader *, struct directive *);
-static int do_line (cpp_reader *, struct directive *);
-static int do_include (cpp_reader *, struct directive *);
-static int do_undef (cpp_reader *, struct directive *);
-static int do_error (cpp_reader *, struct directive *);
-static int do_pragma (cpp_reader *, struct directive *);
-static int do_ident (cpp_reader *, struct directive *);
-static int do_if (cpp_reader *, struct directive *);
-static int do_xifdef (cpp_reader *, struct directive *);
-static int do_else (cpp_reader *, struct directive *);
-static int do_elif (cpp_reader *, struct directive *);
-static int do_endif (cpp_reader *, struct directive *);
-static int do_warning (cpp_reader *, struct directive *);
-
-#define IS_INCLUDE_DIRECTIVE_TYPE(t) \
- ((int) T_INCLUDE <= (int) (t) && (int) (t) <= (int) T_IMPORT)
-
-/* Here is the actual list of #-directives, most-often-used first.
- The initialize_builtins function assumes #define is the very first. */
-
-static struct directive directive_table[] = {
- { 6, do_define, "define", T_DEFINE },
- { 5, do_xifdef, "ifdef", T_IFDEF },
- { 6, do_xifdef, "ifndef", T_IFNDEF },
- { 7, do_include, "include", T_INCLUDE },
- { 12, do_include, "include_next", T_INCLUDE_NEXT },
- { 6, do_include, "import", T_IMPORT },
- { 5, do_endif, "endif", T_ENDIF },
- { 4, do_else, "else", T_ELSE },
- { 2, do_if, "if", T_IF },
- { 4, do_elif, "elif", T_ELIF },
- { 5, do_undef, "undef", T_UNDEF },
- { 5, do_error, "error", T_ERROR },
- { 7, do_warning, "warning", T_WARNING },
- { 6, do_pragma, "pragma", T_PRAGMA },
- { 4, do_line, "line", T_LINE },
- { 5, do_ident, "ident", T_IDENT },
- { -1, 0, "", T_UNUSED }
-};
-
-/* table to tell if char can be part of a C identifier. */
-U_CHAR is_idchar[256] = { 0 };
-/* table to tell if char can be first char of a c identifier. */
-U_CHAR is_idstart[256] = { 0 };
-/* table to tell if c is horizontal space. */
-U_CHAR is_hor_space[256] = { 0 };
-/* table to tell if c is horizontal or vertical space. */
-U_CHAR is_space[256] = { 0 };
-
-/* 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.
- * XXX We should setlocale(LC_CTYPE, "C") here for safety.
- */
- for (i = 0; i < 256; i++)
- {
- is_idchar[i] = ISALNUM(i);
- is_idstart[i] = ISALPHA(i);
- }
-
- is_idchar['_'] = 1;
- is_idstart['_'] = 1;
-
- /* These will be reset later if -$ is in effect. */
- 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;
-}
-
-
-/* Place into PFILE a quoted string representing the string SRC.
- Caller must reserve enough space in pfile->token_buffer. */
-
-static void
-quote_string(cpp_reader *pfile, char *src)
-{
- U_CHAR c;
-
- CPP_PUTC_Q(pfile, '\"');
- for (;; )
- switch ((c = *src++))
- {
- default:
- if (ISPRINT(c))
- CPP_PUTC_Q(pfile, c);
- else
- {
- sprintf((char *)CPP_PWRITTEN(pfile), "\\%03o", c);
- CPP_ADJUST_WRITTEN(pfile, 4);
- }
- break;
-
- case '\"':
- case '\\':
- CPP_PUTC_Q(pfile, '\\');
- CPP_PUTC_Q(pfile, c);
- break;
-
- case '\0':
- CPP_PUTC_Q(pfile, '\"');
- CPP_NUL_TERMINATE_Q(pfile);
- return;
- }
-}
-
-/* Re-allocates PFILE->token_buffer so it will hold at least N more chars. */
-
-void
-cpp_grow_buffer(cpp_reader *pfile, long n)
-{
- long old_written = CPP_WRITTEN(pfile);
- pfile->token_buffer_size = n + 2 * pfile->token_buffer_size;
- pfile->token_buffer = (U_CHAR *)
- xrealloc(pfile->token_buffer, pfile->token_buffer_size);
- CPP_SET_WRITTEN(pfile, old_written);
-}
-
-
-/*
- * 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.
- */
-
-void
-cpp_define(cpp_reader *pfile, U_CHAR *str)
-{
- U_CHAR *buf, *p;
-
- buf = str;
- p = str;
- if (!is_idstart[*p])
- {
- cpp_error(pfile, "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 != '=')
- {
- cpp_error(pfile, "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(buf, str, p - str);
- /* Change the = to a space. */
- buf[p - str] = ' ';
- /* Scan for any backslash-newline and remove it. */
- p++;
- q = &buf[p - str];
- while (*p)
- {
- if (*p == '\\' && p[1] == '\n')
- p += 2;
- else
- *q++ = *p++;
- }
- *q = 0;
- }
-
- if (cpp_push_buffer(pfile, buf, strlen(buf)) != NULL)
- {
- do_define(pfile, NULL);
- cpp_pop_buffer(pfile);
- }
-}
-
-/* Given a colon-separated list of file names PATH,
- add all the names to the search path for include files. */
-
-static void
-path_include(cpp_reader *pfile, char *path)
-{
- char *p;
-
- p = path;
-
- if (*p)
- while (1) {
- char *q = p;
- char *name;
-
- /* Find the end of this name. */
- while (*q != 0 && *q != PATH_SEPARATOR) q++;
- if (p == q) {
- /* An empty name in the path stands for the current directory. */
- name = (char *) xmalloc(2);
- name[0] = '.';
- name[1] = 0;
- } else {
- /* Otherwise use the directory that is named. */
- name = (char *) xmalloc(q - p + 1);
- copy_memory(p, name, q - p);
- name[q - p] = 0;
- }
-
- append_include_chain(pfile,
- &(CPP_OPTIONS(pfile)->bracket_include), name, 0);
-
- /* Advance past this name. */
- p = q;
- if (*p == 0)
- break;
- /* Skip the colon. */
- p++;
- }
-}
-
-void
-cpp_options_init(cpp_options *opts)
-{
- zero_memory((char *) opts, sizeof *opts);
- opts->in_fname = NULL;
- opts->out_fname = NULL;
-
- opts->dollars_in_ident = 1;
- initialize_char_syntax();
-
- opts->no_line_commands = 0;
- opts->no_trigraphs = 1;
- opts->put_out_comments = 0;
- opts->print_include_names = 0;
- opts->dump_macros = dump_none;
- opts->no_output = 0;
- opts->remap = 0;
- opts->cplusplus = 0;
- opts->cplusplus_comments = 1;
-
- opts->verbose = 0;
- opts->objc = 0;
- opts->lang_asm = 0;
- opts->for_lint = 0;
- opts->chill = 0;
- opts->pedantic_errors = 0;
- opts->inhibit_warnings = 0;
- opts->warn_comments = 0;
- opts->warn_import = 1;
- opts->warnings_are_errors = 0;
-}
-
-enum cpp_token
-null_underflow(cpp_reader *pfile ATTRIBUTE_UNUSED)
-{
- return CPP_EOF;
-}
-
-int
-null_cleanup(cpp_buffer *pbuf ATTRIBUTE_UNUSED, cpp_reader *pfile ATTRIBUTE_UNUSED)
-{
- return 0;
-}
-
-int
-macro_cleanup(cpp_buffer *pbuf, cpp_reader *pfile ATTRIBUTE_UNUSED)
-{
- HASHNODE *macro = (HASHNODE *) pbuf->data;
- if (macro->type == T_DISABLED)
- macro->type = T_MACRO;
- if (macro->type != T_MACRO || pbuf->buf != macro->value.defn->expansion)
- free(pbuf->buf);
- return 0;
-}
-
-/* Assuming we have read '/'.
- If this is the start of a comment (followed by '*' or '/'),
- skip to the end of the comment, and return ' '.
- Return EOF if we reached the end of file before the end of the comment.
- If not the start of a comment, return '/'. */
-
-static int
-skip_comment(cpp_reader *pfile, long *linep)
-{
- int c = 0;
- while (PEEKC() == '\\' && PEEKN(1) == '\n')
- {
- if (linep)
- (*linep)++;
- FORWARD(2);
- }
- if (PEEKC() == '*')
- {
- FORWARD(1);
- for (;; )
- {
- int prev_c = c;
- c = GETC();
- if (c == EOF)
- return EOF;
- while (c == '\\' && PEEKC() == '\n')
- {
- if (linep)
- (*linep)++;
- FORWARD(1), c = GETC();
- }
- if (prev_c == '*' && c == '/')
- return ' ';
- if (c == '\n' && linep)
- (*linep)++;
- }
- }
- else if (PEEKC() == '/' && CPP_OPTIONS(pfile)->cplusplus_comments)
- {
- FORWARD(1);
- for (;; )
- {
- c = GETC();
- if (c == EOF)
- return ' '; /* Allow // to be terminated by EOF. */
- while (c == '\\' && PEEKC() == '\n')
- {
- FORWARD(1);
- c = GETC();
- if (linep)
- (*linep)++;
- }
- if (c == '\n')
- {
- /* Don't consider final '\n' to be part of comment. */
- FORWARD(-1);
- return ' ';
- }
- }
- }
- else
- return '/';
-}
-
-/* Skip whitespace \-newline and comments. Does not macro-expand. */
-
-void
-cpp_skip_hspace(cpp_reader *pfile)
-{
- while (1)
- {
- int c = PEEKC();
- if (c == EOF)
- return; /* FIXME */
- if (is_hor_space[c])
- {
- if ((c == '\f' || c == '\v') && CPP_PEDANTIC(pfile))
- cpp_pedwarn(pfile, "%s in preprocessing directive",
- c == '\f' ? "formfeed" : "vertical tab");
- FORWARD(1);
- }
- else if (c == '/')
- {
- FORWARD(1);
- c = skip_comment(pfile, NULL);
- if (c == '/')
- FORWARD(-1);
- if (c == EOF || c == '/')
- return;
- }
- else if (c == '\\' && PEEKN(1) == '\n') {
- FORWARD(2);
- }
- else if (c == '@' && CPP_BUFFER(pfile)->has_escapes
- && is_hor_space[PEEKN(1)])
- FORWARD(2);
- else return;
- }
-}
-
-/* Read the rest of the current line.
- The line is appended to PFILE's output buffer. */
-
-static void
-copy_rest_of_line(cpp_reader *pfile)
-{
- struct cpp_options *opts = CPP_OPTIONS(pfile);
- for (;; )
- {
- int c = GETC();
- int nextc;
- switch (c)
- {
- case EOF:
- goto end_directive;
- case '\\':
- if (PEEKC() == '\n')
- {
- FORWARD(1);
- continue;
- }
- case '\'':
- case '\"':
- goto scan_directive_token;
- break;
- case '/':
- nextc = PEEKC();
- if (nextc == '*' || (opts->cplusplus_comments && nextc == '/'))
- goto scan_directive_token;
- break;
- case '\f':
- case '\v':
- if (CPP_PEDANTIC(pfile))
- cpp_pedwarn(pfile, "%s in preprocessing directive",
- c == '\f' ? "formfeed" : "vertical tab");
- break;
-
- case '\n':
- FORWARD(-1);
- goto end_directive;
-scan_directive_token:
- FORWARD(-1);
- cpp_get_token(pfile);
- continue;
- }
- CPP_PUTC(pfile, c);
- }
-end_directive:;
- CPP_NUL_TERMINATE(pfile);
-}
-
-void
-skip_rest_of_line(cpp_reader *pfile)
-{
- long old = CPP_WRITTEN(pfile);
- copy_rest_of_line(pfile);
- CPP_SET_WRITTEN(pfile, old);
-}
-
-/* Handle a possible # directive.
- '#' has already been read. */
-
-int
-handle_directive(cpp_reader *pfile)
-{ int c;
- register struct directive *kt;
- int ident_length;
- U_CHAR *ident;
- long old_written = CPP_WRITTEN(pfile);
-
- cpp_skip_hspace(pfile);
-
- c = PEEKC();
- if (c >= '0' && c <= '9')
- {
- /* Handle # followed by a line number. */
- if (CPP_PEDANTIC(pfile))
- cpp_pedwarn(pfile, "`#' followed by integer");
- do_line(pfile, NULL);
- goto done_a_directive;
- }
-
- /* Now find the directive name. */
- CPP_PUTC(pfile, '#');
- parse_name(pfile, GETC());
- ident = pfile->token_buffer + old_written + 1;
- ident_length = CPP_PWRITTEN(pfile) - ident;
- if (ident_length == 0 && PEEKC() == '\n')
- {
- /* A line of just `#' becomes blank. */
- goto done_a_directive;
- }
-
-#if 0
- if (ident_length == 0 || !is_idstart[*ident]) {
- U_CHAR *p = ident;
- while (is_idchar[*p]) {
- if (*p < '0' || *p > '9')
- break;
- p++;
- }
- /* 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)
- cpp_warning(pfile, "invalid preprocessor directive");
- return 0;
- }
- }
-
- if (!lang_asm)
- cpp_error(pfile, "invalid preprocessor directive name");
-
- return 0;
- }
-#endif
- /*
- * Decode the keyword and call the appropriate expansion
- * routine, after moving the input pointer up to the next line.
- */
- for (kt = directive_table;; kt++) {
- if (kt->length <= 0)
- goto not_a_directive;
- if (kt->length == ident_length
- && !strncmp(kt->name, ident, ident_length))
- break;
- }
-
- /* We may want to pass through #define, #pragma, and #include.
- Other directives may create output, but we don't want the directive
- itself out, so we pop it now. For example conditionals may emit
- #failed ... #endfailed stuff. */
-
- if (!(kt->type == T_DEFINE
- || kt->type == T_PRAGMA
- || (IS_INCLUDE_DIRECTIVE_TYPE(kt->type)
- && CPP_OPTIONS(pfile)->dump_includes)))
- CPP_SET_WRITTEN(pfile, old_written);
-
- (*kt->func)(pfile, kt);
-
- if (kt->type == T_DEFINE)
- {
- if (CPP_OPTIONS(pfile)->dump_macros == dump_names)
- {
- /* Skip "#define". */
- U_CHAR *p = pfile->token_buffer + old_written + 7;
-
- SKIP_WHITE_SPACE(p);
- while (is_idchar[*p]) p++;
- pfile->limit = p;
- CPP_PUTC(pfile, '\n');
- }
- else if (CPP_OPTIONS(pfile)->dump_macros != dump_definitions)
- CPP_SET_WRITTEN(pfile, old_written);
- }
-
-done_a_directive:
- return 1;
-
-not_a_directive:
- return 0; }
-
-/* Pass a directive through to the output file.
- BUF points to the contents of the directive, as a contiguous string.
- m 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(U_CHAR *buf, U_CHAR *limit, cpp_reader *pfile, struct directive *keyword)
-{
- register unsigned keyword_length = keyword->length;
-
- CPP_RESERVE(pfile, 1 + keyword_length + (limit - buf));
- CPP_PUTC_Q(pfile, '#');
- CPP_PUTS_Q(pfile, keyword->name, keyword_length);
- if (limit != buf && buf[0] != ' ')
- CPP_PUTC_Q(pfile, ' ');
- CPP_PUTS_Q(pfile, buf, limit - buf);
-#if 0
- CPP_PUTS_Q(pfile, '\n');
- /* Count the line we have just made in the output,
- to get in sync properly. */
- pfile->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;
-};
-
-/* 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. */
-
-static DEFINITION *
-collect_expansion(cpp_reader *pfile, U_CHAR *buf, U_CHAR *limit, int nargs, struct arglist *arglist)
-{
- DEFINITION *defn;
- register U_CHAR *p, *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;
- 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 (limit < buf)
- abort();
-
- /* Find the beginning of the trailing whitespace. */
- p = buf;
- while (p < limit && is_space[limit[-1]]) limit--;
-
- /* Allocate space for the text in the macro definition.
- Leading and trailing whitespace chars need 2 bytes each.
- Each other input char may or may not need 1 byte,
- so this is an upper bound. The extra 5 are for invented
- leading and trailing newline-marker and final null. */
- maxsize = (sizeof (DEFINITION)
- + (limit - p) + 5);
- /* Occurrences of '@' get doubled, so allocate extra space for them. */
- while (p < limit)
- if (*p++ == '@')
- maxsize++;
- defn = (DEFINITION *) xcalloc(1, maxsize);
-
- defn->nargs = nargs;
- exp_p = defn->expansion = (U_CHAR *) defn + sizeof (DEFINITION);
- lastp = exp_p;
-
- p = buf;
-
- /* Add one initial space escape-marker to prevent accidental
- token-pasting (often removed by macroexpand). */
- *exp_p++ = '@';
- *exp_p++ = ' ';
-
- if (limit - p >= 2 && p[0] == '#' && p[1] == '#') {
- cpp_error(pfile, "`##' at start of macro definition");
- p += 2;
- }
-
- /* Process the main body of the definition. */
- while (p < limit) {
- int skipped_arg = 0;
- register U_CHAR c = *p++;
-
- *exp_p++ = c;
-
- if (!CPP_TRADITIONAL(pfile)) {
- 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 '@':
- /* An '@' in a string or character constant stands for itself,
- and does not need to be escaped. */
- if (!expected_delimiter)
- *exp_p++ = c;
- break;
-
- case '#':
- /* # is ordinary inside a string. */
- if (expected_delimiter)
- break;
- if (p < limit && *p == '#') {
- /* ##: 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++;
- /* Discard following whitespace. */
- SKIP_WHITE_SPACE(p);
- concat = p;
- if (p == limit)
- cpp_error(pfile, "`##' at end of macro definition");
- } else if (nargs >= 0) {
- /* Single #: stringify following argument ref.
- Don't leave the # in the expansion. */
- exp_p--;
- SKIP_WHITE_SPACE(p);
- if (p == limit || !is_idstart[*p]
- || (*p == 'L' && p + 1 < limit && (p[1] == '\'' || p[1] == '"')))
- cpp_error(pfile,
- "`#' 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--;
- p += 1;
- while (p < limit && !(p[-2] == '*' && p[-1] == '/'))
- p++;
-#if 0
- /* Mark this as a concatenation-point, as if it had been ##. */
- concat = p;
-#endif
- }
- break;
- }
- }
-
- /* 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
- && strncmp(arg->name, id_beg, id_len) == 0) {
- if (expected_delimiter && CPP_OPTIONS(pfile)->warn_stringify) {
- if (CPP_TRADITIONAL(pfile)) {
- cpp_warning(pfile, "macro argument `%.*s' is stringified.",
- id_len, arg->name);
- } else {
- cpp_warning(pfile,
- "macro arg `%.*s' would be stringified with -traditional.",
- id_len, arg->name);
- }
- }
- /* If ANSI, don't actually substitute inside a string. */
- if (!CPP_TRADITIONAL(pfile) && expected_delimiter)
- break;
- /* 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;
- tpat->raw_after = 0;
- tpat->rest_args = arg->rest_args;
- tpat->stringify = (CPP_TRADITIONAL(pfile)
- ? expected_delimiter != '\0'
- : stringify == id_beg);
-
- 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 + 2 <= limit && p1[0] == '#' && p1[1] == '#')
- tpat->raw_after = 1;
- }
- 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)
- cpp_error(pfile,
- "`#' operator should be followed by a macro argument name");
- }
- }
- }
-
- if (!CPP_TRADITIONAL(pfile) && expected_delimiter == 0)
- {
- /* If ANSI, put in a "@ " marker to prevent token pasting.
- But not if "inside a string" (which in ANSI mode
- happens only for -D option). */
- *exp_p++ = '@';
- *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;
-}
-
-/*
- * 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)
-
-/* Create a DEFINITION node from a #define directive. Arguments are
- as for do_define. */
-
-static MACRODEF
-create_definition(U_CHAR *buf, U_CHAR *limit, cpp_reader *pfile, int predefinition)
-{
- 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 rest_args = 0;
- long line, col;
- char *file = CPP_BUFFER(pfile) ? CPP_BUFFER(pfile)->nominal_fname : "";
- DEFINITION *defn;
- int arglengths = 0; /* Accumulate lengths of arg names
- plus number of args. */
- MACRODEF mdef;
- cpp_buf_line_and_col(CPP_BUFFER(pfile), &line, &col);
-
- bp = buf;
-
- while (is_hor_space[*bp])
- bp++;
-
- symname = bp; /* remember where it starts */
-
- sym_length = check_macro_name(pfile, 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)
- cpp_pedwarn(pfile, "another parameter follows `%s'", rest_extension);
-
- if (!is_idstart[*bp])
- cpp_pedwarn(pfile, "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 ((size_t)(limit - bp) > REST_EXTENSION_LENGTH
- && strncmp(rest_extension, bp, REST_EXTENSION_LENGTH) == 0) {
- rest_args = 1;
- temp->rest_args = 1;
- break;
- }
- }
- 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 != ')')) {
- cpp_error(pfile, "badly punctuated parameter list in `#define'");
- goto nope;
- }
- if (*bp == ',') {
- bp++;
- SKIP_WHITE_SPACE(bp);
- }
- if (bp >= limit) {
- cpp_error(pfile, "unterminated parameter list in `#define'");
- goto nope;
- }
- {
- struct arglist *otemp;
-
- for (otemp = temp->next; otemp != NULL; otemp = otemp->next)
- if (temp->length == otemp->length
- && strncmp(temp->name, otemp->name, temp->length) == 0) {
- U_CHAR *name;
-
- name = (U_CHAR *) alloca(temp->length + 1);
- (void) strncpy(name, temp->name, temp->length);
- name[temp->length] = '\0';
- cpp_error(pfile,
- "duplicate argument name `%s' in `#define'", name);
- goto nope;
- }
- }
- }
-
- ++bp; /* skip paren */
- SKIP_WHITE_SPACE(bp);
- /* now everything from bp before limit is the definition. */
- defn = collect_expansion(pfile, 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) {
- copy_memory(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 {
- 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 '~':
- cpp_warning(pfile, "missing white space after `#define %.*s'",
- sym_length, symname);
- break;
-
- default:
- cpp_pedwarn(pfile, "missing white space after `#define %.*s'",
- sym_length, symname);
- break;
- }
- }
- }
- /* now everything from bp before limit is the definition. */
- defn = collect_expansion(pfile, bp, limit, -1, NULL);
- defn->args.argnames = (U_CHAR *) "";
- }
-
- defn->line = line;
- defn->file = file;
-
- /* OP is null if this is a predefinition */
- defn->predefined = predefinition;
- mdef.defn = defn;
- mdef.symnam = symname;
- mdef.symlen = sym_length;
-
- return mdef;
-
-nope:
- mdef.defn = 0;
- return mdef;
-}
-
-/* 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(cpp_reader *pfile, 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 == '"')))
- cpp_error(pfile, "invalid %s name", usage);
- else if (!is_idstart[*symname]) {
- U_CHAR *msg; /* what pain... */
- msg = (U_CHAR *) alloca(sym_length + 1);
- copy_memory(symname, msg, sym_length);
- msg[sym_length] = 0;
- cpp_error(pfile, "invalid %s name `%s'", usage, msg);
- } else {
- if (!strncmp(symname, "defined", 7) && sym_length == 7)
- cpp_error(pfile, "invalid %s name `defined'", usage);
- }
- return sym_length;
-}
-
-/* Return zero if two DEFINITIONs are isomorphic. */
-
-static int
-compare_defs(cpp_reader *pfile, DEFINITION *d1, DEFINITION *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 (CPP_PEDANTIC(pfile)
- && 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 && !strncmp(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(int first, U_CHAR *beg1, int len1, U_CHAR *beg2, int 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);
-}
-
-/* Process a #define command.
- KEYWORD is the keyword-table entry for #define,
- or NULL for a "predefined" macro. */
-
-static int
-do_define(cpp_reader *pfile, struct directive *keyword)
-{
- int hashcode;
- MACRODEF mdef;
- HASHNODE *hp;
- int save_put_out_comments;
- long here;
- U_CHAR *macro, *buf, *end;
-
- here = CPP_WRITTEN(pfile);
-
- save_put_out_comments = CPP_OPTIONS(pfile)->put_out_comments;
- CPP_OPTIONS(pfile)->put_out_comments = CPP_TRADITIONAL(pfile);
- copy_rest_of_line(pfile);
- CPP_OPTIONS(pfile)->put_out_comments = save_put_out_comments;
-
- /* Copy out the line so we can pop the token buffer. */
- buf = pfile->token_buffer + here;
- end = CPP_PWRITTEN(pfile);
- macro = alloca(end - buf + 1);
- copy_memory(buf, macro, end - buf + 1);
- end = macro + (end - buf);
-
- CPP_SET_WRITTEN(pfile, here);
-
-#if 0
- /* If this is a precompiler run (with -pcp) pass thru #define commands. */
- if (pcp_outfile && keyword)
- pass_thru_directive(macro, end, pfile, keyword);
-#endif
-
- mdef = create_definition(macro, end, pfile, keyword == NULL);
- if (mdef.defn == 0)
- goto nope;
-
- hashcode = hashf(mdef.symnam, mdef.symlen, HASHSIZE);
-
- if ((hp = cpp_lookup(pfile, 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(pfile, mdef.defn, hp->value.defn);
- /* Redefining a constant is ok with -D. */
- else if (hp->type == T_CONST)
- ok = !CPP_OPTIONS(pfile)->done_initializing;
- /* Print the warning if it's not ok. */
- if (!ok)
- {
- U_CHAR *msg; /* what pain... */
-
- /* If we are passing through #define and #undef directives, do
- that for this re-definition now. */
- if (CPP_OPTIONS(pfile)->debug_output && keyword)
- pass_thru_directive(macro, end, pfile, keyword);
-
- msg = (U_CHAR *) alloca(mdef.symlen + 22);
- *msg = '`';
- copy_memory(mdef.symnam, msg + 1, mdef.symlen);
- strcpy((char *) (msg + mdef.symlen + 1), "' redefined");
- cpp_pedwarn(pfile, msg);
- if (hp->type == T_MACRO)
- cpp_pedwarn_with_file_and_line(pfile, hp->value.defn->file, 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 (CPP_OPTIONS(pfile)->debug_output && keyword)
- pass_thru_directive(macro, end, pfile, keyword);
- install(mdef.symnam, mdef.symlen, T_MACRO, 0,
- (char *) mdef.defn, hashcode);
- }
-
- return 0;
-
-nope:
-
- return 1;
-}
-
-/* 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. */
-
-/* raw and expanded are relative to ARG_BASE */
-#define ARG_BASE ((pfile)->token_buffer)
-
-struct argdata {
- /* Strings relative to pfile->token_buffer */
- long raw, expanded, stringified;
- int raw_length, expand_length;
- int stringified_length;
- char newlines;
- char use_count;
-};
-
-/* Allocate a new cpp_buffer for PFILE, and push it on the input buffer stack.
- If BUFFER != NULL, then use the LENGTH characters in BUFFER
- as the new input buffer.
- Return the new buffer, or NULL on failure. */
-
-cpp_buffer *
-cpp_push_buffer(cpp_reader *pfile, U_CHAR *buffer, long length)
-{
- register cpp_buffer *buf = CPP_BUFFER(pfile);
- if (buf == pfile->buffer_stack)
- {
- cpp_fatal(pfile, "%s: macro or `#include' recursion too deep",
- buf->fname);
- return NULL;
- }
- buf--;
- zero_memory((char *) buf, sizeof (cpp_buffer));
- CPP_BUFFER(pfile) = buf;
- buf->if_stack = pfile->if_stack;
- buf->cleanup = null_cleanup;
- buf->underflow = null_underflow;
- buf->buf = buf->cur = buffer;
- buf->alimit = buf->rlimit = buffer + length;
-
- return buf;
-}
-
-cpp_buffer *
-cpp_pop_buffer(cpp_reader *pfile)
-{
- cpp_buffer *buf = CPP_BUFFER(pfile);
- (*buf->cleanup)(buf, pfile);
- return ++CPP_BUFFER(pfile);
-}
-
-/* Scan until CPP_BUFFER (PFILE) is exhausted into PFILE->token_buffer.
- Pop the buffer when done. */
-
-void
-cpp_scan_buffer(cpp_reader *pfile)
-{
- cpp_buffer *buffer = CPP_BUFFER(pfile);
- for (;; )
- {
- enum cpp_token token = cpp_get_token(pfile);
- if (token == CPP_EOF) /* Should not happen ... */
- break;
- if (token == CPP_POP && CPP_BUFFER(pfile) == buffer)
- {
- cpp_pop_buffer(pfile);
- break;
- }
- }
-}
-
-/*
- * Rescan a string (which may have escape marks) into pfile's buffer.
- * Place the result in pfile->token_buffer.
- *
- * The input is copied before it is scanned, so it is safe to pass
- * it something from the token_buffer that will get overwritten
- * (because it follows CPP_WRITTEN). This is used by do_include.
- */
-
-static void
-cpp_expand_to_buffer(cpp_reader *pfile, U_CHAR *buf, int length)
-{
- register cpp_buffer *ip;
-#if 0
- cpp_buffer obuf;
-#endif
- U_CHAR *limit = buf + length;
- U_CHAR *buf1;
-#if 0
- int odepth = indepth;
-#endif
-
- 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;
-
- ip = cpp_push_buffer(pfile, buf1, length);
- if (ip == NULL)
- return;
- ip->has_escapes = 1;
-#if 0
- ip->lineno = obuf.lineno = 1;
-#endif
-
- /* Scan the input, create the output. */
- cpp_scan_buffer(pfile);
-
-#if 0
- if (indepth != odepth)
- abort();
-#endif
-
- CPP_NUL_TERMINATE(pfile);
-}
-
-
-static void
-adjust_position(U_CHAR *buf, U_CHAR *limit, long *linep, long *colp)
-{
- while (buf < limit)
- {
- U_CHAR ch = *buf++;
- if (ch == '\n')
- (*linep)++, (*colp) = 1;
- else
- (*colp)++;
- }
-}
-
-/* Move line_base forward, updating lineno and colno. */
-
-static void
-update_position(register cpp_buffer *pbuf)
-{
- unsigned char *old_pos = pbuf->buf + pbuf->line_base;
- unsigned char *new_pos = pbuf->cur;
- register struct parse_marker *mark;
- for (mark = pbuf->marks; mark != NULL; mark = mark->next)
- {
- if (pbuf->buf + mark->position < new_pos)
- new_pos = pbuf->buf + mark->position;
- }
- pbuf->line_base += new_pos - old_pos;
- adjust_position(old_pos, new_pos, &pbuf->lineno, &pbuf->colno);
-}
-
-void
-cpp_buf_line_and_col(register cpp_buffer *pbuf, long *linep, long *colp)
-{
- long dummy;
- if (colp == NULL)
- colp = &dummy;
- if (pbuf)
- {
- *linep = pbuf->lineno;
- *colp = pbuf->colno;
- adjust_position(pbuf->buf + pbuf->line_base, pbuf->cur, linep, colp);
- }
- else
- {
- *linep = 0;
- *colp = 0;
- }
-}
-
-/* Return the cpp_buffer that corresponds to a file (not a macro). */
-
-cpp_buffer *
-cpp_file_buffer(cpp_reader *pfile)
-{
- cpp_buffer *ip = CPP_BUFFER(pfile);
-
- for (; ip != CPP_NULL_BUFFER(pfile); ip = CPP_PREV_BUFFER(ip))
- if (ip->fname != NULL)
- return ip;
- return NULL;
-}
-
-static long
-count_newlines(register U_CHAR *buf, register U_CHAR *limit)
-{
- register long count = 0;
- while (buf < limit)
- {
- U_CHAR ch = *buf++;
- if (ch == '\n')
- count++;
- }
- return count;
-}
-
-/*
- * write out a #line command, 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_command(cpp_reader *pfile, int conditional, enum file_change_code file_change)
-{
- long line, col;
- cpp_buffer *ip = CPP_BUFFER(pfile);
-
- if (ip->fname == NULL)
- return;
-
- update_position(ip);
-
- if (CPP_OPTIONS(pfile)->no_line_commands
- || CPP_OPTIONS(pfile)->no_output)
- return;
-
- line = CPP_BUFFER(pfile)->lineno;
- col = CPP_BUFFER(pfile)->colno;
- adjust_position(CPP_LINE_BASE(ip), ip->cur, &line, &col);
-
- if (CPP_OPTIONS(pfile)->no_line_commands)
- return;
-
- if (conditional) {
- if (line == pfile->lineno)
- return;
-
- /* If the inherited line number is a little too small,
- output some newlines instead of a #line command. */
- if (line > pfile->lineno && line < pfile->lineno + 8) {
- CPP_RESERVE(pfile, 20);
- while (line > pfile->lineno) {
- CPP_PUTC_Q(pfile, '\n');
- pfile->lineno++;
- }
- return;
- }
- }
-
-#if 0
- /* Don't output a line number of 0 if we can help it. */
- if (ip->lineno == 0 && ip->bufp - ip->buf < ip->length
- && *ip->bufp == '\n') {
- ip->lineno++;
- ip->bufp++;
- }
-#endif
-
- CPP_RESERVE(pfile, 4 * strlen(ip->nominal_fname) + 50);
- {
-#ifdef OUTPUT_LINE_COMMANDS
- static char sharp_line[] = "#line ";
-#else
- static char sharp_line[] = "# ";
-#endif
- CPP_PUTS_Q(pfile, sharp_line, sizeof(sharp_line)-1);
- }
-
- sprintf((char *) CPP_PWRITTEN(pfile), "%ld ", line);
- CPP_ADJUST_WRITTEN(pfile, strlen(CPP_PWRITTEN(pfile)));
-
- quote_string(pfile, ip->nominal_fname);
- if (file_change != same_file) {
- CPP_PUTC_Q(pfile, ' ');
- CPP_PUTC_Q(pfile, file_change == enter_file ? '1' : '2');
- }
- /* Tell cc1 if following text comes from a system header file. */
- if (ip->system_header_p) {
- CPP_PUTC_Q(pfile, ' ');
- CPP_PUTC_Q(pfile, '3');
- }
-#ifndef NO_IMPLICIT_EXTERN_C
- /* Tell cc1plus if following text should be treated as C. */
- if (ip->system_header_p == 2 && CPP_OPTIONS(pfile)->cplusplus) {
- CPP_PUTC_Q(pfile, ' ');
- CPP_PUTC_Q(pfile, '4');
- }
-#endif
- CPP_PUTC_Q(pfile, '\n');
- pfile->lineno = line;
-}
-
-/*
- * Parse a macro argument and append the info on PFILE's token_buffer.
- * REST_ARGS means to absorb the rest of the args.
- * Return nonzero to indicate a syntax error.
- */
-
-static enum cpp_token
-macarg(cpp_reader *pfile, int rest_args)
-{
- int paren = 0;
- enum cpp_token token;
- char save_put_out_comments = CPP_OPTIONS(pfile)->put_out_comments;
- CPP_OPTIONS(pfile)->put_out_comments = 0;
-
- /* Try to parse as much of the argument as exists at this
- input stack level. */
- pfile->no_macro_expand++;
- for (;; )
- {
- token = cpp_get_token(pfile);
- switch (token)
- {
- case CPP_EOF:
- goto done;
- case CPP_POP:
- /* If we've hit end of file, it's an error (reported by caller).
- Ditto if it's the end of cpp_expand_to_buffer text.
- If we've hit end of macro, just continue. */
- if (!CPP_IS_MACRO_BUFFER(CPP_BUFFER(pfile)))
- goto done;
- break;
- case CPP_LPAREN:
- paren++;
- break;
- case CPP_RPAREN:
- if (--paren < 0)
- goto found;
- break;
- case CPP_COMMA:
- /* if we've returned to lowest level and
- we aren't absorbing all args */
- if (paren == 0 && rest_args == 0)
- goto found;
- break;
-found:
- /* Remove ',' or ')' from argument buffer. */
- CPP_ADJUST_WRITTEN(pfile, -1);
- goto done;
- default:;
- }
- }
-
-done:
- CPP_OPTIONS(pfile)->put_out_comments = save_put_out_comments;
- pfile->no_macro_expand--;
-
- return token;
-}
-
-/* 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(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 '\'':
- 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;
- if (c == '\n' && quotec == '\'')
- break;
- }
- }
- break;
- }
- }
-
- return obp - start;
-}
-
-
-static struct tm *
-timestamp(cpp_reader *pfile)
-{
- if (!pfile->timebuf) {
- time_t t = time((time_t *) 0);
- pfile->timebuf = localtime(&t);
- }
- return pfile->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(HASHNODE *hp, cpp_reader *pfile)
-{
- char *buf;
- int len;
- int true_indepth;
- cpp_buffer *ip = NULL;
- struct tm *timebuf;
-
- int paren = 0; /* For special `defined' keyword */
-
-#if 0
- if (pcp_outfile && pcp_inside_if
- && hp->type != T_SPEC_DEFINED && hp->type != T_CONST)
- cpp_error(pfile,
- "Predefined macro `%s' used inside `#if' during precompilation",
- hp->name);
-#endif
-
- for (ip = CPP_BUFFER(pfile);; ip = CPP_PREV_BUFFER(ip))
- {
- if (ip == CPP_NULL_BUFFER(pfile))
- {
- cpp_error(pfile, "cccp error: not in any file?!");
- return; /* the show must go on */
- }
- if (ip->fname != NULL)
- break;
- }
-
- switch (hp->type)
- {
- case T_FILE:
- case T_BASE_FILE:
- {
- char *string;
- if (hp->type == T_BASE_FILE)
- {
- while (CPP_PREV_BUFFER(ip) != CPP_NULL_BUFFER(pfile))
- ip = CPP_PREV_BUFFER(ip);
- }
- string = ip->nominal_fname;
-
- if (!string)
- string = "";
- CPP_RESERVE(pfile, 3 + 4 * strlen(string));
- quote_string(pfile, string);
- return;
- }
-
- case T_INCLUDE_LEVEL:
- true_indepth = 0;
- ip = CPP_BUFFER(pfile);
- for (; ip != CPP_NULL_BUFFER(pfile); ip = CPP_PREV_BUFFER(ip))
- if (ip->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 = CPP_WCHAR_TYPE(pfile);
- break;
-/* CYGNUS LOCAL vmakarov */
-#endif
-/* END CYGNUS LOCAL */
-
- case T_REGISTER_PREFIX_TYPE:
- buf = REGISTER_PREFIX;
- break;
-
- case T_CONST:
- buf = (char *) alloca(4 * sizeof (int));
- sprintf(buf, "%d", hp->value.ival);
-#ifdef STDC_0_IN_SYSTEM_HEADERS
- if (ip->system_header_p
- && hp->length == 8 && memcmp(hp->name, "__STDC__", 8) == 0
- && !cpp_lookup(pfile, (U_CHAR *) "__STRICT_ANSI__", -1, -1))
- strcpy(buf, "0");
-#endif
-#if 0
- if (pcp_inside_if && pcp_outfile)
- /* Output a precondition for this macro use */
- fprintf(pcp_outfile, "#define %s %d\n", hp->name, hp->value.ival);
-#endif
- break;
-
- case T_SPECLINE:
- {
- long line = ip->lineno;
- long col = ip->colno;
- adjust_position(CPP_LINE_BASE(ip), ip->cur, &line, &col);
-
- buf = (char *) alloca(10);
- sprintf(buf, "%ld", line);
- }
- break;
-
- case T_DATE:
- case T_TIME:
- buf = (char *) alloca(20);
- timebuf = timestamp(pfile);
- 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 = CPP_BUFFER(pfile);
- SKIP_WHITE_SPACE(ip->cur);
- if (*ip->cur == '(')
- {
- paren++;
- ip->cur++; /* Skip over the paren */
- SKIP_WHITE_SPACE(ip->cur);
- }
-
- if (!is_idstart[*ip->cur])
- goto oops;
- if (ip->cur[0] == 'L' && (ip->cur[1] == '\'' || ip->cur[1] == '"'))
- goto oops;
- if ((hp = cpp_lookup(pfile, ip->cur, -1, -1)))
- {
-#if 0
- 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);
-#endif
- buf = " 1 ";
- }
-#if 0
- 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);
- }
-#endif
- while (is_idchar[*ip->cur])
- ++ip->cur;
- SKIP_WHITE_SPACE(ip->cur);
- if (paren)
- {
- if (*ip->cur != ')')
- goto oops;
- ++ip->cur;
- }
- break;
-
-oops:
-
- cpp_error(pfile, "`defined' without an identifier");
- break;
-
- default:
- cpp_error(pfile, "cccp error: invalid special hash type"); /* time for gdb */
- abort();
- }
- len = strlen(buf);
- CPP_RESERVE(pfile, len + 1);
- CPP_PUTS_Q(pfile, buf, len);
- CPP_NUL_TERMINATE_Q(pfile);
-
- return;
-}
-
-/* Write out a #define command for the special named MACRO_NAME
- to PFILE's token_buffer. */
-
-static void
-dump_special_to_buffer(cpp_reader *pfile, char *macro_name)
-{
- static char define_directive[] = "#define ";
- int macro_name_length = strlen(macro_name);
- output_line_command(pfile, 0, same_file);
- CPP_RESERVE(pfile, sizeof(define_directive) + macro_name_length);
- CPP_PUTS_Q(pfile, define_directive, sizeof(define_directive)-1);
- CPP_PUTS_Q(pfile, macro_name, macro_name_length);
- CPP_PUTC_Q(pfile, ' ');
- cpp_expand_to_buffer(pfile, macro_name, macro_name_length);
- CPP_PUTC(pfile, '\n');
-}
-
-/* Initialize the built-in macros. */
-
-static void
-initialize_builtins(cpp_reader *pfile)
-{
- install((U_CHAR *)"__LINE__", -1, T_SPECLINE, 0, 0, -1);
- install((U_CHAR *)"__DATE__", -1, T_DATE, 0, 0, -1);
- install((U_CHAR *)"__FILE__", -1, T_FILE, 0, 0, -1);
- install((U_CHAR *)"__BASE_FILE__", -1, T_BASE_FILE, 0, 0, -1);
- install((U_CHAR *)"__INCLUDE_LEVEL__", -1, T_INCLUDE_LEVEL, 0, 0, -1);
- install((U_CHAR *)"__VERSION__", -1, T_VERSION, 0, 0, -1);
-#ifndef NO_BUILTIN_SIZE_TYPE
- install((U_CHAR *)"__SIZE_TYPE__", -1, T_SIZE_TYPE, 0, 0, -1);
-#endif
-#ifndef NO_BUILTIN_PTRDIFF_TYPE
- install((U_CHAR *)"__PTRDIFF_TYPE__ ", -1, T_PTRDIFF_TYPE, 0, 0, -1);
-#endif
-/* CYGNUS LOCAL vmakarov */
-#ifndef NO_BUILTIN_WCHAR_TYPE
-/* END CYGNUS LOCAL */
- install((U_CHAR *)"__WCHAR_TYPE__", -1, T_WCHAR_TYPE, 0, 0, -1);
-/* CYGNUS LOCAL vmakarov */
-#endif
-/* END CYGNUS LOCAL */
- install((U_CHAR *)"__REGISTER_PREFIX__", -1, T_REGISTER_PREFIX_TYPE, 0, 0, -1);
- install((U_CHAR *)"__TIME__", -1, T_TIME, 0, 0, -1);
- if (!CPP_TRADITIONAL(pfile))
- install((U_CHAR *)"__STDC__", -1, T_CONST, STDC_VALUE, 0, -1);
- if (CPP_OPTIONS(pfile)->objc)
- install((U_CHAR *)"__OBJC__", -1, T_CONST, 1, 0, -1);
-/* This is supplied using a -D by the compiler driver
- so that it is present only when truly compiling with GNU C. */
-/* install ("__GNUC__", -1, T_CONST, 2, 0, -1); */
-
- if (CPP_OPTIONS(pfile)->debug_output)
- {
- dump_special_to_buffer(pfile, "__BASE_FILE__");
- dump_special_to_buffer(pfile, "__VERSION__");
-#ifndef NO_BUILTIN_SIZE_TYPE
- dump_special_to_buffer(pfile, "__SIZE_TYPE__");
-#endif
-#ifndef NO_BUILTIN_PTRDIFF_TYPE
- dump_special_to_buffer(pfile, "__PTRDIFF_TYPE__");
-#endif
-/* CYGNUS LOCAL vmakarov */
-#ifndef NO_BUILTIN_WCHAR_TYPE
-/* END CYGNUS LOCAL */
- dump_special_to_buffer(pfile, "__WCHAR_TYPE__");
-/* CYGNUS LOCAL vmakarov */
-#endif
-/* END CYGNUS LOCAL */
- dump_special_to_buffer(pfile, "__DATE__");
- dump_special_to_buffer(pfile, "__TIME__");
- if (!CPP_TRADITIONAL(pfile))
- dump_special_to_buffer(pfile, "__STDC__");
- if (CPP_OPTIONS(pfile)->objc)
- dump_special_to_buffer(pfile, "__OBJC__");
- }
-}
-
-/* Return 1 iff a token ending in C1 followed directly by a token C2
- could cause mis-tokenization. */
-
-static int
-unsafe_chars(int c1, int c2)
-{
- switch (c1)
- {
- case '+': case '-':
- if (c2 == c1 || c2 == '=')
- return 1;
- goto letter;
- case '.':
- case '0': case '1': case '2': case '3': case '4':
- case '5': case '6': case '7': case '8': case '9':
- case 'e': case 'E': case 'p': case 'P':
- if (c2 == '-' || c2 == '+')
- return 1; /* could extend a pre-processing number */
- goto letter;
- case 'L':
- if (c2 == '\'' || c2 == '\"')
- return 1; /* Could turn into L"xxx" or L'xxx'. */
- goto letter;
-letter:
- case '_':
- case 'a': case 'b': case 'c': case 'd': case 'f':
- case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
- case 'm': case 'n': case 'o': 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 'F':
- case 'G': case 'H': case 'I': case 'J': case 'K':
- case 'M': case 'N': case 'O': case 'Q': case 'R':
- case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
- case 'Y': case 'Z':
- /* We're in the middle of either a name or a pre-processing number. */
- return (is_idchar[c2] || c2 == '.');
- case '<': case '>': case '!': case '%': case '#': case ':':
- case '^': case '&': case '|': case '*': case '/': case '=':
- return (c2 == c1 || c2 == '=');
- }
- return 0;
-}
-
-/* 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(cpp_reader *pfile, HASHNODE *hp)
-{
- int nargs;
- DEFINITION *defn = hp->value.defn;
- register U_CHAR *xbuf;
- long start_line, start_column;
- int xbuf_len;
- struct argdata *args;
- long old_written = CPP_WRITTEN(pfile);
-#if 0
- int start_line = instack[indepth].lineno;
-#endif
- int rest_args, rest_zero;
- register int i;
-
-#if 0
- CHECK_DEPTH(return; );
-#endif
-
-#if 0
- /* 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);
-#endif
-
- pfile->output_escapes++;
- cpp_buf_line_and_col(cpp_file_buffer(pfile), &start_line, &start_column);
-
- nargs = defn->nargs;
-
- if (nargs >= 0)
- {
- enum cpp_token token;
-
- args = (struct argdata *) alloca((nargs + 1) * sizeof (struct argdata));
-
- for (i = 0; i < nargs; i++)
- {
- args[i].raw = args[i].expanded = 0;
- args[i].raw_length = 0;
- args[i].expand_length = args[i].stringified_length = -1;
- 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;
- rest_args = 0;
- FORWARD(1); /* Discard the open-parenthesis before the first arg. */
- do
- {
- 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;
- args[i].raw = CPP_WRITTEN(pfile);
- token = macarg(pfile, rest_args);
- args[i].raw_length = CPP_WRITTEN(pfile) - args[i].raw;
- args[i].newlines = 0; /* FIXME */
- }
- else
- token = macarg(pfile, 0);
- if (token == CPP_EOF || token == CPP_POP)
- {
- cpp_error_with_line(pfile, start_line, start_column,
- "unterminated macro call");
- return;
- }
- i++;
- } while (token == CPP_COMMA);
-
- /* If we got one arg but it was just whitespace, call that 0 args. */
- if (i == 1)
- {
- register U_CHAR *bp = ARG_BASE + 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)
- {
- cpp_error(pfile, "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 && CPP_TRADITIONAL(pfile))
- ;
- /* the rest args token is allowed to absorb 0 tokens */
- else if (i == nargs - 1 && defn->rest_args)
- rest_zero = 1;
- else if (i == 0)
- cpp_error(pfile, "macro `%s' used without args", hp->name);
- else if (i == 1)
- cpp_error(pfile, "macro `%s' used with just one arg", hp->name);
- else
- cpp_error(pfile, "macro `%s' used with only %d args",
- hp->name, i);
- }
- else if (i > nargs)
- {
- cpp_error(pfile,
- "macro `%s' used with too many (%d) args", hp->name, i);
- }
- }
-
- /* 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)
- {
- register struct argdata *arg = &args[ap->argno];
- /* Stringify if it hasn't already been */
- if (arg->stringified_length < 0)
- {
- int arglen = arg->raw_length;
- int escaped = 0;
- int in_string = 0;
- int c;
- /* Initially need_space is -1. Otherwise, 1 means the
- previous character was a space, but we suppressed it;
- 0 means the previous character was a non-space. */
- int need_space = -1;
- i = 0;
- arg->stringified = CPP_WRITTEN(pfile);
- if (!CPP_TRADITIONAL(pfile))
- CPP_PUTC(pfile, '\"'); /* insert beginning quote */
- for (; i < arglen; i++)
- {
- c = (ARG_BASE + arg->raw)[i];
-
- if (!in_string)
- {
- /* Internal sequences of whitespace are replaced by
- one space except within an string or char token.*/
- if (is_space[c])
- {
- if (CPP_WRITTEN(pfile) > (unsigned)arg->stringified
- && (CPP_PWRITTEN(pfile))[-1] == '@')
- {
- /* "@ " escape markers are removed */
- CPP_ADJUST_WRITTEN(pfile, -1);
- continue;
- }
- if (need_space == 0)
- need_space = 1;
- continue;
- }
- else if (need_space > 0)
- CPP_PUTC(pfile, ' ');
- need_space = 0;
- }
-
- if (escaped)
- escaped = 0;
- else
- {
- if (c == '\\')
- escaped = 1;
- if (in_string)
- {
- if (c == in_string)
- in_string = 0;
- }
- else if (c == '\"' || c == '\'')
- in_string = c;
- }
-
- /* Escape these chars */
- if (c == '\"' || (in_string && c == '\\'))
- CPP_PUTC(pfile, '\\');
- if (ISPRINT(c))
- CPP_PUTC(pfile, c);
- else
- {
- CPP_RESERVE(pfile, 4);
- sprintf((char *)CPP_PWRITTEN(pfile), "\\%03o",
- (unsigned int) c);
- CPP_ADJUST_WRITTEN(pfile, 4);
- }
- }
- if (!CPP_TRADITIONAL(pfile))
- CPP_PUTC(pfile, '\"'); /* insert ending quote */
- arg->stringified_length
- = CPP_WRITTEN(pfile) - arg->stringified;
- }
- xbuf_len += args[ap->argno].stringified_length;
- }
- else if (ap->raw_before || ap->raw_after || CPP_TRADITIONAL(pfile))
- /* 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].expand_length < 0)
- {
- args[ap->argno].expanded = CPP_WRITTEN(pfile);
- cpp_expand_to_buffer(pfile,
- ARG_BASE + args[ap->argno].raw,
- args[ap->argno].raw_length);
-
- args[ap->argno].expand_length
- = CPP_WRITTEN(pfile) - args[ap->argno].expanded;
- }
-
- /* 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)
- || (last_ap != NULL && last_ap->rest_args
- && last_ap->raw_after)))
- {
- /* 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)
- {
- copy_memory(ARG_BASE + arg->stringified,
- xbuf + totlen, arg->stringified_length);
- totlen += arg->stringified_length;
- }
- else if (ap->raw_before || ap->raw_after || CPP_TRADITIONAL(pfile))
- {
- U_CHAR *p1 = ARG_BASE + arg->raw;
- U_CHAR *l1 = p1 + arg->raw_length;
- if (ap->raw_before)
- {
- while (p1 != l1 && is_space[*p1]) p1++;
- while (p1 != l1 && is_idchar[*p1])
- xbuf[totlen++] = *p1++;
- }
- if (ap->raw_after)
- {
- /* 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 whitespace is preceded by an odd number
- of `@' signs, the last `@' was a whitespace
- marker; drop it too. */
- while (p2 != p1 && p2[0] == '@') p2--;
- if ((l1 - p2) & 1)
- l1--;
- break;
- }
- else if (l1[-1] == '-')
- {
- U_CHAR *p2 = l1 - 1;
- /* If a `-' is preceded by an odd number of
- `@' signs then it and the last `@' are
- a no-reexpansion marker. */
- while (p2 != p1 && p2[0] == '@') p2--;
- if ((l1 - p2) & 1)
- l1 -= 2;
- else
- break;
- }
- else break;
- }
- }
-
- /* Delete any no-reexpansion marker that precedes
- an identifier at the beginning of the argument. */
- if (p1[0] == '@' && p1[1] == '-')
- p1 += 2;
-
- copy_memory(p1, xbuf + totlen, l1 - p1);
- totlen += l1 - p1;
- }
- else
- {
- U_CHAR *expanded = ARG_BASE + arg->expanded;
- if (!ap->raw_before && totlen > 0 && arg->expand_length
- && !CPP_TRADITIONAL(pfile)
- && unsafe_chars(xbuf[totlen-1], expanded[0]))
- {
- xbuf[totlen++] = '@';
- xbuf[totlen++] = ' ';
- }
-
- copy_memory(expanded, xbuf + totlen, arg->expand_length);
- totlen += arg->expand_length;
-
- if (!ap->raw_after && totlen > 0 && offset < defn->length
- && !CPP_TRADITIONAL(pfile)
- && unsafe_chars(xbuf[totlen-1], exp[offset]))
- {
- xbuf[totlen++] = '@';
- 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(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))
- xbuf[totlen++] = exp[i];
- }
-
- xbuf[totlen] = 0;
- xbuf_len = totlen;
-
- }
-
- pfile->output_escapes--;
-
- /* Now put the expansion on the input stack
- so our caller will commence reading from it. */
- push_macro_expansion(pfile, xbuf, xbuf_len, hp);
- CPP_BUFFER(pfile)->has_escapes = 1;
-
- /* Pop the space we've used in the token_buffer for argument expansion. */
- CPP_SET_WRITTEN(pfile, old_written);
-
- /* Recursive macro use sometimes works traditionally.
- #define foo(x,y) bar (x (y,0), y)
- foo (foo, baz) */
-
- if (!CPP_TRADITIONAL(pfile))
- hp->type = T_DISABLED;
-}
-
-static void
-push_macro_expansion(cpp_reader *pfile, register U_CHAR *xbuf, int xbuf_len, HASHNODE *hp)
-{
- register cpp_buffer *mbuf = cpp_push_buffer(pfile, xbuf, xbuf_len);
- if (mbuf == NULL)
- return;
- mbuf->cleanup = macro_cleanup;
- mbuf->data = hp;
-
- /* The first chars of the expansion should be a "@ " added by
- collect_expansion. This is to prevent accidental token-pasting
- between the text preceding the macro invocation, and the macro
- expansion text.
-
- We would like to avoid adding unneeded spaces (for the sake of
- tools that use cpp, such as imake). In some common cases we can
- tell that it is safe to omit the space.
-
- The character before the macro invocation cannot have been an
- idchar (or else it would have been pasted with the idchars of
- the macro name). Therefore, if the first non-space character
- of the expansion is an idchar, we do not need the extra space
- to prevent token pasting.
-
- Also, we don't need the extra space if the first char is '(',
- or some other (less common) characters. */
-
- if (xbuf[0] == '@' && xbuf[1] == ' '
- && (is_idchar[xbuf[2]] || xbuf[2] == '(' || xbuf[2] == '\''
- || xbuf[2] == '\"'))
- mbuf->cur += 2;
-}
-
-/* Like cpp_get_token, except that it does not read past end-of-line.
- Also, horizontal space is skipped, and macros are popped. */
-
-static enum cpp_token
-get_directive_token(cpp_reader *pfile)
-{
- for (;; )
- {
- long old_written = CPP_WRITTEN(pfile);
- enum cpp_token token;
- cpp_skip_hspace(pfile);
- if (PEEKC() == '\n')
- return CPP_VSPACE;
- token = cpp_get_token(pfile);
- switch (token)
- {
- case CPP_POP:
- if (!CPP_IS_MACRO_BUFFER(CPP_BUFFER(pfile)))
- return token;
- /* ... else fall though ... */
- case CPP_HSPACE: case CPP_COMMENT:
- CPP_SET_WRITTEN(pfile, old_written);
- break;
- default:
- return token;
- }
- }
-}
-
-/* Handle #include and #import.
- This function expects to see "fname" or <fname> on the input.
-
- The input is normally in part of the output_buffer following
- CPP_WRITTEN, and will get overwritten by output_line_command.
- I.e. in input file specification has been popped by handle_directive.
- This is safe. */
-
-static int
-do_include(cpp_reader *pfile, struct directive *keyword)
-{
- int importing = (keyword->type == T_IMPORT);
- int skip_dirs = (keyword->type == T_INCLUDE_NEXT);
- int angle_brackets = 0; /* 0 for "...", 1 for <...> */
- int before; /* included before? */
- long flen;
- char *fbeg, *fend;
- cpp_buffer *fp;
-
- enum cpp_token token;
-
- /* Chain of dirs to search */
- struct include_hash *ihash;
- struct file_name_list *search_start;
-
- long old_written = CPP_WRITTEN(pfile);
-
- int fd;
-
- if (CPP_PEDANTIC(pfile) && !CPP_BUFFER(pfile)->system_header_p)
- {
- if (importing)
- cpp_pedwarn(pfile, "ANSI C does not allow `#import'");
- if (skip_dirs)
- cpp_pedwarn(pfile, "ANSI C does not allow `#include_next'");
- }
-
- if (importing && CPP_OPTIONS(pfile)->warn_import
- && !CPP_OPTIONS(pfile)->inhibit_warnings
- && !CPP_BUFFER(pfile)->system_header_p && !pfile->import_warning)
- {
- pfile->import_warning = 1;
- cpp_warning(pfile, "`#import' is obsolete, use an #ifdef wrapper in the header file");
- }
-
- pfile->parsing_include_directive++;
- token = get_directive_token(pfile);
- pfile->parsing_include_directive--;
-
- if (token == CPP_STRING)
- {
- fbeg = pfile->token_buffer + old_written + 1;
- fend = CPP_PWRITTEN(pfile) - 1;
- *fend = '\0';
- if (fbeg[-1] == '<')
- angle_brackets = 1;
- }
- else
- {
- cpp_error(pfile,
- "`#%s' expects \"FILENAME\" or <FILENAME>", keyword->name);
- CPP_SET_WRITTEN(pfile, old_written);
- skip_rest_of_line(pfile);
- return 0;
- }
-
- token = get_directive_token(pfile);
- if (token != CPP_VSPACE)
- {
- cpp_error(pfile, "junk at end of `#include'");
- skip_rest_of_line(pfile);
- }
-
- CPP_SET_WRITTEN(pfile, old_written);
-
- flen = fend - fbeg;
-
- if (flen == 0)
- {
- cpp_error(pfile, "empty file name in `#%s'", keyword->name);
- return 0;
- }
-
- search_start = 0;
-
- for (fp = CPP_BUFFER(pfile);
- fp != CPP_NULL_BUFFER(pfile);
- fp = CPP_PREV_BUFFER(fp))
- if (fp->fname != NULL)
- break;
-
- if (fp == CPP_NULL_BUFFER(pfile))
- {
- cpp_fatal(pfile, "cpp internal error: fp == NULL_BUFFER in do_include");
- return 1;
- }
-
- /* For #include_next, skip in the search path past the dir in which the
- containing file was found. Treat files specified using an absolute path
- as if there are no more directories to search. Treat the primary source
- file like any other included source, but generate a warning. */
- if (skip_dirs && CPP_PREV_BUFFER(fp) != CPP_NULL_BUFFER(pfile))
- {
- if (fp->ihash->foundhere != ABSOLUTE_PATH)
- search_start = fp->ihash->foundhere->next;
- }
- else
- {
- if (skip_dirs)
- cpp_warning(pfile, "#include_next in primary source file");
-
- if (angle_brackets)
- search_start = CPP_OPTIONS(pfile)->bracket_include;
- else
- {
- if (!CPP_OPTIONS(pfile)->ignore_srcdir)
- {
- if (fp)
- search_start = fp->actual_dir;
- }
- else
- search_start = CPP_OPTIONS(pfile)->quote_include;
- }
- }
-
- if (!search_start)
- {
- cpp_error(pfile, "No include path in which to find %s", fbeg);
- return 0;
- }
-
- fd = find_include_file(pfile, fbeg, search_start, &ihash, &before);
-
- if (fd == -2)
- return 0;
-
- if (fd == -1)
- {
- if (CPP_OPTIONS(pfile)->print_deps_missing_files
- && CPP_PRINT_DEPS(pfile) > (angle_brackets ||
- (pfile->system_include_depth > 0)))
- {
- if (!angle_brackets)
- deps_output(pfile, fbeg, ' ');
- else
- {
- char *p;
- struct file_name_list *ptr;
- /* If requested as a system header, assume it belongs in
- the first system header directory. */
- if (CPP_OPTIONS(pfile)->bracket_include)
- ptr = CPP_OPTIONS(pfile)->bracket_include;
- else
- ptr = CPP_OPTIONS(pfile)->quote_include;
-
- p = (char *) alloca(strlen(ptr->name)
- + strlen(fbeg) + 2);
- if (*ptr->name != '\0')
- {
- strcpy(p, ptr->name);
- strcat(p, "/");
- }
- strcat(p, fbeg);
- deps_output(pfile, p, ' ');
- }
- }
- /* 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 (CPP_PRINT_DEPS(pfile)
- && (CPP_PRINT_DEPS(pfile)
- <= (angle_brackets || (pfile->system_include_depth > 0))))
- cpp_warning(pfile, "No include path in which to find %s", fbeg);
- else
- cpp_error_from_errno(pfile, fbeg);
-
- return 0;
- }
-
- /* For -M, add the file to the dependencies on its first inclusion. */
- if (!before && (CPP_PRINT_DEPS(pfile)
- > (angle_brackets || (pfile->system_include_depth > 0))))
- deps_output(pfile, ihash->name, ' ');
-
- /* Handle -H option. */
- if (CPP_OPTIONS(pfile)->print_include_names)
- {
- fp = CPP_BUFFER(pfile);
- while ((fp = CPP_PREV_BUFFER(fp)) != CPP_NULL_BUFFER(pfile))
- putc('.', stderr);
- fprintf(stderr, " %s\n", ihash->name);
- }
-
- /* Actually process the file */
-
- if (importing)
- ihash->control_macro = "";
-
- if (cpp_push_buffer(pfile, NULL, 0) == NULL)
- {
- close(fd);
- return 0;
- }
-
- if (angle_brackets)
- pfile->system_include_depth++; /* Decremented in file_cleanup. */
-
- if (finclude(pfile, fd, ihash))
- {
- output_line_command(pfile, 0, enter_file);
- pfile->only_seen_white = 2;
- }
-
- return 0;
-}
-
-
-/* Convert a character string literal into a nul-terminated string.
- The input string is [IN ... LIMIT).
- The result is placed in RESULT. RESULT can be the same as IN.
- The value returned in the end of the string written to RESULT,
- or NULL on error. */
-
-static U_CHAR *
-convert_string(cpp_reader *pfile, register U_CHAR *result, register U_CHAR *in, register U_CHAR *limit, int handle_escapes)
-{
- U_CHAR c;
- c = *in++;
- if (c != '\"')
- return NULL;
- while (in < limit)
- {
- U_CHAR c = *in++;
- switch (c)
- {
- case '\0':
- return NULL;
- case '\"':
- limit = in;
- break;
- case '\\':
- if (handle_escapes)
- {
- char *bpc = (char *) in;
- int i = (U_CHAR) cpp_parse_escape(pfile, &bpc, 0x00ff);
- in = (U_CHAR *) bpc;
- if (i >= 0)
- *result++ = (U_CHAR)c;
- break;
- }
- /* else fall through */
- default:
- *result++ = c;
- }
- }
- *result = 0;
- return result;
-}
-
-/*
- * interpret #line command. Remembers previously seen fnames
- * in its very own hash table.
- */
-#define FNAME_HASHSIZE 37
-
-static int
-do_line(cpp_reader *pfile, struct directive *keyword ATTRIBUTE_UNUSED)
-{
- cpp_buffer *ip = CPP_BUFFER(pfile);
- int new_lineno;
- long old_written = CPP_WRITTEN(pfile);
- enum file_change_code file_change = same_file;
- enum cpp_token token;
-
- token = get_directive_token(pfile);
-
- if (token != CPP_NUMBER
- || !ISDIGIT(pfile->token_buffer[old_written]))
- {
- cpp_error(pfile, "invalid format `#line' command");
- goto bad_line_directive;
- }
-
- /* 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 *)(pfile->token_buffer + old_written)) - 1;
- CPP_SET_WRITTEN(pfile, old_written);
-
- /* NEW_LINENO is one less than the actual line number here. */
- if (CPP_PEDANTIC(pfile) && new_lineno < 0)
- cpp_pedwarn(pfile, "line number out of range in `#line' command");
-
-#if 0 /* #line 10"foo.c" is supposed to be allowed. */
- if (PEEKC() && !is_space[PEEKC()]) {
- cpp_error(pfile, "invalid format `#line' command");
- goto bad_line_directive;
- }
-#endif
-
- token = get_directive_token(pfile);
-
- if (token == CPP_STRING) {
- U_CHAR *fname = pfile->token_buffer + old_written;
- U_CHAR *end_name;
- static HASHNODE *fname_table[FNAME_HASHSIZE];
- HASHNODE *hp, **hash_bucket;
- U_CHAR *p;
- long num_start;
- int fname_length;
-
- /* Turn the file name, which is a character string literal,
- into a null-terminated string. Do this in place. */
- end_name = convert_string(pfile, fname, fname, CPP_PWRITTEN(pfile), 1);
- if (end_name == NULL)
- {
- cpp_error(pfile, "invalid format `#line' command");
- goto bad_line_directive;
- }
-
- fname_length = end_name - fname;
-
- num_start = CPP_WRITTEN(pfile);
- token = get_directive_token(pfile);
- if (token != CPP_VSPACE && token != CPP_EOF && token != CPP_POP) {
- p = pfile->token_buffer + num_start;
- if (CPP_PEDANTIC(pfile))
- cpp_pedwarn(pfile, "garbage at end of `#line' command");
-
- if (token != CPP_NUMBER || *p < '0' || *p > '4' || p[1] != '\0')
- {
- cpp_error(pfile, "invalid format `#line' command");
- goto bad_line_directive;
- }
- if (*p == '1')
- file_change = enter_file;
- else if (*p == '2')
- file_change = leave_file;
- else if (*p == '3')
- ip->system_header_p = 1;
- else /* if (*p == '4') */
- ip->system_header_p = 2;
-
- CPP_SET_WRITTEN(pfile, num_start);
- token = get_directive_token(pfile);
- p = pfile->token_buffer + num_start;
- if (token == CPP_NUMBER && p[1] == '\0' && (*p == '3' || *p== '4')) {
- ip->system_header_p = *p == '3' ? 1 : 2;
- token = get_directive_token(pfile);
- }
- if (token != CPP_VSPACE) {
- cpp_error(pfile, "invalid format `#line' command");
- goto bad_line_directive;
- }
- }
-
- hash_bucket = &fname_table[hashf(fname, fname_length, FNAME_HASHSIZE)];
- for (hp = *hash_bucket; hp != NULL; hp = hp->next)
- if (hp->length == fname_length
- && strncmp(hp->value.cpval, fname, fname_length) == 0) {
- ip->nominal_fname = hp->value.cpval;
- 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;
-
- hp->length = fname_length;
- ip->nominal_fname = hp->value.cpval = ((char *) hp) + sizeof (HASHNODE);
- copy_memory(fname, hp->value.cpval, fname_length);
- }
- }
- else if (token != CPP_VSPACE && token != CPP_EOF) {
- cpp_error(pfile, "invalid format `#line' command");
- goto bad_line_directive;
- }
-
- ip->lineno = new_lineno;
-bad_line_directive:
- skip_rest_of_line(pfile);
- CPP_SET_WRITTEN(pfile, old_written);
- output_line_command(pfile, 0, file_change);
- 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(cpp_reader *pfile, struct directive *keyword)
-{
- int sym_length;
- HASHNODE *hp;
- U_CHAR *buf, *name, *limit;
- int c;
- long here = CPP_WRITTEN(pfile);
- enum cpp_token token;
-
- cpp_skip_hspace(pfile);
- c = GETC();
- if (!is_idstart[c])
- {
- cpp_error(pfile, "token after #undef is not an identifier");
- skip_rest_of_line(pfile);
- return 1;
- }
-
- parse_name(pfile, c);
- buf = pfile->token_buffer + here;
- limit = CPP_PWRITTEN(pfile);
-
- /* Copy out the token so we can pop the token buffer. */
- name = alloca(limit - buf + 1);
- copy_memory(buf, name, limit - buf);
- name[limit - buf] = '\0';
-
- token = get_directive_token(pfile);
- if (token != CPP_VSPACE && token != CPP_POP)
- {
- cpp_pedwarn(pfile, "junk on line after #undef");
- skip_rest_of_line(pfile);
- }
-
- CPP_SET_WRITTEN(pfile, here);
-
-#if 0
- /* If this is a precompiler run (with -pcp) pass thru #undef commands. */
- if (pcp_outfile && keyword)
- pass_thru_directive(buf, limit, pfile, keyword);
-#endif
-
- sym_length = check_macro_name(pfile, name, "macro");
-
- while ((hp = cpp_lookup(pfile, name, sym_length, -1)) != NULL)
- {
- /* If we are generating additional info for debugging (with -g) we
- need to pass through all effective #undef commands. */
- if (CPP_OPTIONS(pfile)->debug_output && keyword)
- pass_thru_directive(name, name+sym_length, pfile, keyword);
- if (hp->type != T_MACRO)
- cpp_warning(pfile, "undefining `%s'", hp->name);
- delete_macro(hp);
- }
-
- return 0;
-}
-
-/* Wrap do_undef for -U processing. */
-static void
-cpp_undef(cpp_reader *pfile, U_CHAR *macro)
-{
- if (cpp_push_buffer(pfile, macro, strlen(macro)))
- {
- do_undef(pfile, NULL);
- cpp_pop_buffer(pfile);
- }
-}
-
-
-/*
- * 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(cpp_reader *pfile, struct directive *keyword ATTRIBUTE_UNUSED)
-{
- long here = CPP_WRITTEN(pfile);
- U_CHAR *text;
- copy_rest_of_line(pfile);
- text = pfile->token_buffer + here;
- SKIP_WHITE_SPACE(text);
-
- cpp_error(pfile, "#error %s", text);
- CPP_SET_WRITTEN(pfile, here);
- return 0;
-}
-
-/*
- * Report a warning detected by the program we are processing.
- * Use the text of the line in the warning message, then continue.
- */
-
-static int
-do_warning(cpp_reader *pfile, struct directive *keyword ATTRIBUTE_UNUSED)
-{
- U_CHAR *text;
- long here = CPP_WRITTEN(pfile);
- copy_rest_of_line(pfile);
- text = pfile->token_buffer + here;
- SKIP_WHITE_SPACE(text);
-
- if (CPP_PEDANTIC(pfile) && !CPP_BUFFER(pfile)->system_header_p)
- cpp_pedwarn(pfile, "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. */
- cpp_pedwarn(pfile, "#warning %s", text);
- CPP_SET_WRITTEN(pfile, here);
- return 0;
-}
-
-/* Report program identification. */
-
-static int
-do_ident(cpp_reader *pfile, struct directive *keyword ATTRIBUTE_UNUSED)
-{
- /* Allow #ident in system headers, since that's not user's fault. */
- if (CPP_PEDANTIC(pfile) && !CPP_BUFFER(pfile)->system_header_p)
- cpp_pedwarn(pfile, "ANSI C does not allow `#ident'");
-
- skip_rest_of_line(pfile); /* Correct? Appears to match cccp. */
-
- return 0;
-}
-
-/* Just check for some recognized pragmas that need validation here,
- and leave the text in the token buffer to be output. */
-
-static int
-do_pragma(cpp_reader *pfile, struct directive *keyword ATTRIBUTE_UNUSED)
-{
- long here = CPP_WRITTEN(pfile);
- U_CHAR *buf;
-
- copy_rest_of_line(pfile);
- buf = pfile->token_buffer + here;
- SKIP_WHITE_SPACE(buf);
-
- if (!strncmp(buf, "once", 4))
- {
- cpp_buffer *ip = NULL;
-
- /* Allow #pragma once in system headers, since that's not the user's
- fault. */
- if (!CPP_BUFFER(pfile)->system_header_p)
- cpp_warning(pfile, "`#pragma once' is obsolete");
-
- for (ip = CPP_BUFFER(pfile);; ip = CPP_PREV_BUFFER(ip))
- {
- if (ip == CPP_NULL_BUFFER(pfile))
- return 0;
- if (ip->fname != NULL)
- break;
- }
-
- if (CPP_PREV_BUFFER(ip) == CPP_NULL_BUFFER(pfile))
- cpp_warning(pfile, "`#pragma once' outside include file");
- else
- ip->ihash->control_macro = ""; /* never repeat */
- }
-
- if (!strncmp(buf, "implementation", 14))
- {
- /* Be quiet about `#pragma implementation' for a file only if it hasn't
- been included yet. */
- struct include_hash *ptr;
- U_CHAR *p = buf + 14, *fname, *fcopy;
- SKIP_WHITE_SPACE(p);
- if (*p == '\n' || *p != '\"')
- return 0;
-
- fname = p + 1;
- p = (U_CHAR *) strchr(fname, '\"');
-
- fcopy = alloca(p - fname + 1);
- copy_memory(fname, fcopy, p - fname);
- fcopy[p-fname] = '\0';
-
- ptr = include_hash(pfile, fcopy, 0);
- if (ptr)
- cpp_warning(pfile,
- "`#pragma implementation' for `%s' appears after file is included",
- fcopy);
- }
-
- return 0;
-}
-
-
-/*
- * handle #if command 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 command)
- * 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(cpp_reader *pfile, struct directive *keyword ATTRIBUTE_UNUSED)
-{
- HOST_WIDE_INT value = eval_if_expression(pfile);
- conditional_skip(pfile, value == 0, T_IF, NULL);
- return 0;
-}
-
-/*
- * handle a #elif directive by not changing if_stack either.
- * see the comment above do_else.
- */
-
-static int
-do_elif(cpp_reader *pfile, struct directive *keyword ATTRIBUTE_UNUSED)
-{
- if (pfile->if_stack == CPP_BUFFER(pfile)->if_stack) {
- cpp_error(pfile, "`#elif' not within a conditional");
- return 0;
- } else {
- if (pfile->if_stack->type != T_IF && pfile->if_stack->type != T_ELIF) {
- cpp_error(pfile, "`#elif' after `#else'");
-#if 0
- fprintf(stderr, " (matches line %d", pfile->if_stack->lineno);
-#endif
- if (pfile->if_stack->fname != NULL && CPP_BUFFER(pfile)->fname != NULL
- && strcmp(pfile->if_stack->fname,
- CPP_BUFFER(pfile)->nominal_fname) != 0)
- fprintf(stderr, ", file %s", pfile->if_stack->fname);
- fprintf(stderr, ")\n");
- }
- pfile->if_stack->type = T_ELIF;
- }
-
- if (pfile->if_stack->if_succeeded)
- skip_if_group(pfile);
- else {
- HOST_WIDE_INT value = eval_if_expression(pfile);
- if (value == 0)
- skip_if_group(pfile);
- else {
- ++pfile->if_stack->if_succeeded; /* continue processing input */
- output_line_command(pfile, 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(cpp_reader *pfile)
-{
- HASHNODE *save_defined;
- HOST_WIDE_INT value;
- long old_written = CPP_WRITTEN(pfile);
-
- save_defined = install((U_CHAR *)"defined", -1, T_SPEC_DEFINED, 0, 0, -1);
- pfile->pcp_inside_if = 1;
-
- value = cpp_parse_expr(pfile);
- pfile->pcp_inside_if = 0;
- delete_macro(save_defined); /* clean up special symbol */
-
- CPP_SET_WRITTEN(pfile, old_written); /* Pop */
-
- 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(cpp_reader *pfile, struct directive *keyword)
-{
- int skip;
- cpp_buffer *ip = CPP_BUFFER(pfile);
- U_CHAR *ident;
- int ident_length;
- enum cpp_token token;
- int start_of_file = 0;
- U_CHAR *control_macro = 0;
- int old_written = CPP_WRITTEN(pfile);
-
- /* Detect a #ifndef at start of file (not counting comments). */
- if (ip->fname != 0 && keyword->type == T_IFNDEF)
- start_of_file = pfile->only_seen_white == 2;
-
- pfile->no_macro_expand++;
- token = get_directive_token(pfile);
- pfile->no_macro_expand--;
-
- ident = pfile->token_buffer + old_written;
- ident_length = CPP_WRITTEN(pfile) - old_written;
- CPP_SET_WRITTEN(pfile, old_written); /* Pop */
-
- if (token == CPP_VSPACE || token == CPP_POP || token == CPP_EOF)
- {
- skip = (keyword->type == T_IFDEF);
- if (!CPP_TRADITIONAL(pfile))
- cpp_pedwarn(pfile, "`#%s' with no argument", keyword->name);
- }
- else if (token == CPP_NAME)
- {
- HASHNODE *hp = cpp_lookup(pfile, ident, ident_length, -1);
- skip = (hp == NULL) ^ (keyword->type == T_IFNDEF);
- if (start_of_file && !skip)
- {
- control_macro = (U_CHAR *) xmalloc(ident_length + 1);
- copy_memory(ident, control_macro, ident_length + 1);
- }
- }
- else
- {
- skip = (keyword->type == T_IFDEF);
- if (!CPP_TRADITIONAL(pfile))
- cpp_error(pfile, "`#%s' with invalid argument", keyword->name);
- }
-
- if (!CPP_TRADITIONAL(pfile))
- { int c;
- cpp_skip_hspace(pfile);
- c = PEEKC();
- if (c != EOF && c != '\n')
- cpp_pedwarn(pfile, "garbage at end of `#%s' argument", keyword->name); }
- skip_rest_of_line(pfile);
-
-#if 0
- if (pcp_outfile) {
- /* Output a precondition for this macro. */
- if (hp && 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);
- }
-#endif
-
- conditional_skip(pfile, skip, T_IF, control_macro);
- 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(cpp_reader *pfile, int skip, enum node_type type, U_CHAR *control_macro)
-{
- IF_STACK_FRAME *temp;
-
- temp = (IF_STACK_FRAME *) xcalloc(1, sizeof (IF_STACK_FRAME));
- temp->fname = CPP_BUFFER(pfile)->nominal_fname;
-#if 0
- temp->lineno = CPP_BUFFER(pfile)->lineno;
-#endif
- temp->next = pfile->if_stack;
- temp->control_macro = control_macro;
- pfile->if_stack = temp;
-
- pfile->if_stack->type = type;
-
- if (skip != 0) {
- skip_if_group(pfile);
- return;
- } else {
- ++pfile->if_stack->if_succeeded;
- output_line_command(pfile, 1, same_file);
- }
-}
-
-/* Subroutine of skip_if_group. Examine one preprocessing directive and
- return 0 if skipping should continue, 1 if it should halt. Also
- adjusts the if_stack as appropriate.
- The `#' has been read, but not the identifier. */
-
-static int
-consider_directive_while_skipping(cpp_reader *pfile, IF_STACK_FRAME *stack)
-{
- long ident_len, ident;
- struct directive *kt;
- IF_STACK_FRAME *temp;
-
- cpp_skip_hspace(pfile);
-
- ident = CPP_WRITTEN(pfile);
- parse_name(pfile, GETC());
- ident_len = CPP_WRITTEN(pfile) - ident;
-
- CPP_SET_WRITTEN(pfile, ident);
-
- for (kt = directive_table; kt->length >= 0; kt++)
- if (kt->length == ident_len
- && strncmp(pfile->token_buffer + ident, kt->name, kt->length) == 0)
- switch (kt->type)
- {
- case T_IF:
- case T_IFDEF:
- case T_IFNDEF:
- temp = (IF_STACK_FRAME *) xmalloc(sizeof (IF_STACK_FRAME));
- temp->next = pfile->if_stack;
- pfile->if_stack = temp;
- temp->fname = CPP_BUFFER(pfile)->nominal_fname;
- temp->type = kt->type;
- return 0;
-
- case T_ELSE:
- if (CPP_PEDANTIC(pfile) && pfile->if_stack != stack)
- validate_else(pfile, "#else");
- /* fall through */
- case T_ELIF:
- if (pfile->if_stack->type == T_ELSE)
- cpp_error(pfile, "`%s' after `#else'", kt->name);
-
- if (pfile->if_stack == stack)
- return 1;
- else
- {
- pfile->if_stack->type = kt->type;
- return 0;
- }
-
- case T_ENDIF:
- if (CPP_PEDANTIC(pfile) && pfile->if_stack != stack)
- validate_else(pfile, "#endif");
-
- if (pfile->if_stack == stack)
- return 1;
-
- temp = pfile->if_stack;
- pfile->if_stack = temp->next;
- free(temp);
- return 0;
-
- default:
- return 0;
- }
-
- /* Don't let erroneous code go by. */
- if (!CPP_OPTIONS(pfile)->lang_asm && CPP_PEDANTIC(pfile))
- cpp_pedwarn(pfile, "invalid preprocessor directive name");
- return 0;
-}
-
-/* skip to #endif, #else, or #elif. adjust line numbers, etc.
- * leaves input ptr at the sharp sign found.
- */
-static void
-skip_if_group(cpp_reader *pfile)
-{
- int c;
- IF_STACK_FRAME *save_if_stack = pfile->if_stack; /* don't pop past here */
- U_CHAR *beg_of_line;
- long old_written;
-
- if (CPP_OPTIONS(pfile)->output_conditionals)
- {
- CPP_PUTS(pfile, "#failed\n", 8);
- pfile->lineno++;
- output_line_command(pfile, 1, same_file);
- }
-
- old_written = CPP_WRITTEN(pfile);
-
- for (;; )
- {
- beg_of_line = CPP_BUFFER(pfile)->cur;
-
- if (!CPP_TRADITIONAL(pfile))
- cpp_skip_hspace(pfile);
- c = GETC();
- if (c == '\n')
- {
- if (CPP_OPTIONS(pfile)->output_conditionals)
- CPP_PUTC(pfile, c);
- continue;
- }
- else if (c == '#')
- {
- if (consider_directive_while_skipping(pfile, save_if_stack))
- break;
- }
- else if (c == EOF)
- return; /* Caller will issue error. */
-
- FORWARD(-1);
- if (CPP_OPTIONS(pfile)->output_conditionals)
- {
- CPP_PUTS(pfile, beg_of_line, CPP_BUFFER(pfile)->cur - beg_of_line);
- copy_rest_of_line(pfile);
- }
- else
- {
- copy_rest_of_line(pfile);
- CPP_SET_WRITTEN(pfile, old_written); /* discard it */
- }
-
- c = GETC();
- if (c == EOF)
- return; /* Caller will issue error. */
- else
- {
- /* \n */
- if (CPP_OPTIONS(pfile)->output_conditionals)
- CPP_PUTC(pfile, c);
- }
- }
-
- /* Back up to the beginning of this line. Caller will process the
- directive. */
- CPP_BUFFER(pfile)->cur = beg_of_line;
- pfile->only_seen_white = 1;
- if (CPP_OPTIONS(pfile)->output_conditionals)
- {
- CPP_PUTS(pfile, "#endfailed\n", 11);
- pfile->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(cpp_reader *pfile, struct directive *keyword ATTRIBUTE_UNUSED)
-{
- cpp_buffer *ip = CPP_BUFFER(pfile);
-
- if (CPP_PEDANTIC(pfile))
- validate_else(pfile, "#else");
- skip_rest_of_line(pfile);
-
- if (pfile->if_stack == CPP_BUFFER(pfile)->if_stack) {
- cpp_error(pfile, "`#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. */
- pfile->if_stack->control_macro = 0;
-
- if (pfile->if_stack->type != T_IF && pfile->if_stack->type != T_ELIF) {
- cpp_error(pfile, "`#else' after `#else'");
- fprintf(stderr, " (matches line %d", pfile->if_stack->lineno);
- if (strcmp(pfile->if_stack->fname, ip->nominal_fname) != 0)
- fprintf(stderr, ", file %s", pfile->if_stack->fname);
- fprintf(stderr, ")\n");
- }
- pfile->if_stack->type = T_ELSE;
- }
-
- if (pfile->if_stack->if_succeeded)
- skip_if_group(pfile);
- else {
- ++pfile->if_stack->if_succeeded; /* continue processing input */
- output_line_command(pfile, 1, same_file);
- }
- return 0;
-}
-
-/*
- * unstack after #endif command
- */
-
-static int
-do_endif(cpp_reader *pfile, struct directive *keyword ATTRIBUTE_UNUSED)
-{
- if (CPP_PEDANTIC(pfile))
- validate_else(pfile, "#endif");
- skip_rest_of_line(pfile);
-
- if (pfile->if_stack == CPP_BUFFER(pfile)->if_stack)
- cpp_error(pfile, "unbalanced `#endif'");
- else
- {
- IF_STACK_FRAME *temp = pfile->if_stack;
- pfile->if_stack = temp->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. */
- struct parse_marker start_mark;
- int c;
-
- parse_set_mark(&start_mark, pfile);
-
- for (;; )
- {
- cpp_skip_hspace(pfile);
- c = GETC();
- if (c != '\n')
- break;
- }
- parse_goto_mark(&start_mark, pfile);
- parse_clear_mark(&start_mark);
-
- if (c == EOF)
- {
- /* 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. */
- struct cpp_buffer *ip;
- for (ip = CPP_BUFFER(pfile);; ip = CPP_PREV_BUFFER(ip))
- if (ip->fname != NULL)
- break;
- ip->ihash->control_macro = temp->control_macro;
- }
- }
- free(temp);
- output_line_command(pfile, 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 command name. P points to the first char after the command name. */
-
-static void
-validate_else(cpp_reader *pfile, char *directive)
-{
- int c;
- cpp_skip_hspace(pfile);
- c = PEEKC();
- if (c != EOF && c != '\n')
- cpp_pedwarn(pfile,
- "text following `%s' violates ANSI standard", directive);
-}
-
-/* Get the next token, and add it to the text in pfile->token_buffer.
- Return the kind of token we got. */
-
-enum cpp_token
-cpp_get_token(cpp_reader *pfile)
-{
- register int c, c2, c3;
- long old_written;
- long start_line, start_column;
- enum cpp_token token;
- struct cpp_options *opts = CPP_OPTIONS(pfile);
- CPP_BUFFER(pfile)->prev = CPP_BUFFER(pfile)->cur;
-get_next:
- c = GETC();
- if (c == EOF)
- {
-handle_eof:
- if (CPP_BUFFER(pfile)->seen_eof)
- {
- if (cpp_pop_buffer(pfile) != CPP_NULL_BUFFER(pfile))
- goto get_next;
- else
- return CPP_EOF;
- }
- else
- {
- cpp_buffer *next_buf
- = CPP_PREV_BUFFER(CPP_BUFFER(pfile));
- CPP_BUFFER(pfile)->seen_eof = 1;
- if (CPP_BUFFER(pfile)->nominal_fname
- && next_buf != CPP_NULL_BUFFER(pfile))
- {
- /* We're about to return from an #include file.
- Emit #line information now (as part of the CPP_POP) result.
- But the #line refers to the file we will pop to. */
- cpp_buffer *cur_buffer = CPP_BUFFER(pfile);
- CPP_BUFFER(pfile) = next_buf;
- pfile->input_stack_listing_current = 0;
- output_line_command(pfile, 0, leave_file);
- CPP_BUFFER(pfile) = cur_buffer;
- }
- return CPP_POP;
- }
- }
- else
- {
- switch (c)
- {
- long newlines;
- struct parse_marker start_mark;
- case '/':
- if (PEEKC() == '=')
- goto op2;
- if (opts->put_out_comments)
- parse_set_mark(&start_mark, pfile);
- newlines = 0;
- cpp_buf_line_and_col(cpp_file_buffer(pfile),
- &start_line, &start_column);
- c = skip_comment(pfile, &newlines);
- if (opts->put_out_comments && (c == '/' || c == EOF))
- parse_clear_mark(&start_mark);
- if (c == '/')
- goto randomchar;
- if (c == EOF)
- {
- cpp_error_with_line(pfile, start_line, start_column,
- "unterminated comment");
- goto handle_eof;
- }
- c = '/'; /* Initial letter of comment. */
-return_comment:
- /* Comments are equivalent to spaces.
- For -traditional, a comment is equivalent to nothing. */
- if (opts->put_out_comments)
- {
- cpp_buffer *pbuf = CPP_BUFFER(pfile);
- U_CHAR *start = pbuf->buf + start_mark.position;
- int len = pbuf->cur - start;
- CPP_RESERVE(pfile, 1 + len);
- CPP_PUTC_Q(pfile, c);
- CPP_PUTS_Q(pfile, start, len);
- pfile->lineno += newlines;
- parse_clear_mark(&start_mark);
- return CPP_COMMENT;
- }
- else if (CPP_TRADITIONAL(pfile))
- {
- return CPP_COMMENT;
- }
- else
- {
-#if 0
- /* This may not work if cpp_get_token is called recursively,
- since many places look for horizontal space. */
- if (newlines)
- {
- /* Copy the newlines into the output buffer, in order to
- avoid the pain of a #line every time a multiline comment
- is seen. */
- CPP_RESERVE(pfile, newlines);
- while (--newlines >= 0)
- {
- CPP_PUTC_Q(pfile, '\n');
- pfile->lineno++;
- }
- return CPP_VSPACE;
- }
-#endif
- CPP_RESERVE(pfile, 1);
- CPP_PUTC_Q(pfile, ' ');
- return CPP_HSPACE;
- }
-#if 0
- if (opts->for_lint) {
- U_CHAR *argbp;
- int cmdlen, arglen;
- char *lintcmd = get_lintcmd(ibp, limit, &argbp, &arglen, &cmdlen);
-
- if (lintcmd != NULL) {
- /* I believe it is always safe to emit this newline: */
- obp[-1] = '\n';
- copy_memory("#pragma lint ", (char *) obp, 13);
- obp += 13;
- copy_memory(lintcmd, (char *) obp, cmdlen);
- obp += cmdlen;
-
- if (arglen != 0) {
- *(obp++) = ' ';
- copy_memory(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 newline for the pragma
- could mess things up. */
- output_line_command(pfile, 0, same_file);
- *(obp++) = ' '; /* just in case, if comments are copied thru */
- *(obp++) = '/';
- }
- }
-#endif
-
- case '#':
-#if 0
- /* If this is expanding a macro definition, don't recognize
- preprocessor directives. */
- if (ip->macro != 0)
- goto randomchar;
- /* If this is expand_into_temp_buffer, recognize them
- only after an actual newline at this level,
- not at the beginning of the input level. */
- if (ip->fname == 0 && beg_of_line == ip->buf)
- goto randomchar;
- if (ident_length)
- goto specialchar;
-#endif
-
- if (!pfile->only_seen_white)
- goto randomchar;
- if (handle_directive(pfile))
- return CPP_DIRECTIVE;
- pfile->only_seen_white = 0;
- return CPP_OTHER;
-
- case '\"':
- case '\'':
- /* A single quoted string is treated like a double -- some
- programs (e.g., troff) are perverse this way */
- cpp_buf_line_and_col(cpp_file_buffer(pfile),
- &start_line, &start_column);
- old_written = CPP_WRITTEN(pfile);
-string:
- CPP_PUTC(pfile, c);
- while (1)
- {
- int cc = GETC();
- if (cc == EOF)
- {
- if (CPP_IS_MACRO_BUFFER(CPP_BUFFER(pfile)))
- {
- /* 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. */
- cpp_buffer *next_buf
- = CPP_PREV_BUFFER(CPP_BUFFER(pfile));
- (*CPP_BUFFER(pfile)->cleanup)
- (CPP_BUFFER(pfile), pfile);
- CPP_BUFFER(pfile) = next_buf;
- continue;
- }
- if (!CPP_TRADITIONAL(pfile))
- {
- cpp_error_with_line(pfile, start_line, start_column,
- "unterminated string or character constant");
- if (pfile->multiline_string_line != start_line
- && pfile->multiline_string_line != 0)
- cpp_error_with_line(pfile,
- pfile->multiline_string_line, -1,
- "possible real start of unterminated constant");
- pfile->multiline_string_line = 0;
- }
- break;
- }
- CPP_PUTC(pfile, cc);
- switch (cc)
- {
- case '\n':
- /* Traditionally, end of line ends a string constant with
- no error. So exit the loop and record the new line. */
- if (CPP_TRADITIONAL(pfile))
- goto while2end;
- if (c == '\'')
- {
- cpp_error_with_line(pfile, start_line, start_column,
- "unterminated character constant");
- goto while2end;
- }
- if (CPP_PEDANTIC(pfile)
- && pfile->multiline_string_line == 0)
- {
- cpp_pedwarn_with_line(pfile, start_line, start_column,
- "string constant runs past end of line");
- }
- if (pfile->multiline_string_line == 0)
- pfile->multiline_string_line = start_line;
- break;
-
- case '\\':
- cc = GETC();
- if (cc == '\n')
- {
- /* Backslash newline is replaced by nothing at all. */
- CPP_ADJUST_WRITTEN(pfile, -1);
- pfile->lineno++;
- }
- else
- {
- /* ANSI stupidly requires that in \\ the second \
- is *not* prevented from combining with a newline. */
- NEWLINE_FIX1(cc);
- if (cc != EOF)
- CPP_PUTC(pfile, cc);
- }
- break;
-
- case '\"':
- case '\'':
- if (cc == c)
- goto while2end;
- break;
- }
- }
-while2end:
- pfile->lineno += count_newlines(pfile->token_buffer + old_written,
- CPP_PWRITTEN(pfile));
- pfile->only_seen_white = 0;
- return c == '\'' ? CPP_CHAR : CPP_STRING;
-
- case '$':
- if (!opts->dollars_in_ident)
- goto randomchar;
- goto letter;
-
- case ':':
- if (opts->cplusplus && PEEKC() == ':')
- goto op2;
- goto randomchar;
-
- case '&':
- case '+':
- case '|':
- NEWLINE_FIX;
- c2 = PEEKC();
- if (c2 == c || c2 == '=')
- goto op2;
- goto randomchar;
-
- case '*':
- case '!':
- case '%':
- case '=':
- case '^':
- NEWLINE_FIX;
- if (PEEKC() == '=')
- goto op2;
- goto randomchar;
-
- case '-':
- NEWLINE_FIX;
- c2 = PEEKC();
- if (c2 == '-' && opts->chill)
- {
- /* Chill style comment */
- if (opts->put_out_comments)
- parse_set_mark(&start_mark, pfile);
- FORWARD(1); /* Skip second '-'. */
- for (;; )
- {
- c = GETC();
- if (c == EOF)
- break;
- if (c == '\n')
- {
- /* Don't consider final '\n' to be part of comment. */
- FORWARD(-1);
- break;
- }
- }
- c = '-';
- goto return_comment;
- }
- if (c2 == '-' || c2 == '=' || c2 == '>')
- goto op2;
- goto randomchar;
-
- case '<':
- if (pfile->parsing_include_directive)
- {
- for (;; )
- {
- CPP_PUTC(pfile, c);
- if (c == '>')
- break;
- c = GETC();
- NEWLINE_FIX1(c);
- if (c == '\n' || c == EOF)
- {
- cpp_error(pfile,
- "missing '>' in `#include <FILENAME>'");
- break;
- }
- }
- return CPP_STRING;
- }
- /* else fall through */
- case '>':
- NEWLINE_FIX;
- c2 = PEEKC();
- if (c2 == '=')
- goto op2;
- if (c2 != c)
- goto randomchar;
- FORWARD(1);
- CPP_RESERVE(pfile, 4);
- CPP_PUTC(pfile, c);
- CPP_PUTC(pfile, c2);
- NEWLINE_FIX;
- c3 = PEEKC();
- if (c3 == '=')
- CPP_PUTC_Q(pfile, GETC());
- CPP_NUL_TERMINATE_Q(pfile);
- pfile->only_seen_white = 0;
- return CPP_OTHER;
-
- case '@':
- if (CPP_BUFFER(pfile)->has_escapes)
- {
- c = GETC();
- if (c == '-')
- {
- if (pfile->output_escapes)
- CPP_PUTS(pfile, "@-", 2);
- parse_name(pfile, GETC());
- return CPP_NAME;
- }
- else if (is_space [c])
- {
- CPP_RESERVE(pfile, 2);
- if (pfile->output_escapes)
- CPP_PUTC_Q(pfile, '@');
- CPP_PUTC_Q(pfile, c);
- return CPP_HSPACE;
- }
- }
- if (pfile->output_escapes)
- {
- CPP_PUTS(pfile, "@@", 2);
- return CPP_OTHER;
- }
- goto randomchar;
-
- case '.':
- NEWLINE_FIX;
- c2 = PEEKC();
- if (ISDIGIT(c2))
- {
- CPP_RESERVE(pfile, 2);
- CPP_PUTC_Q(pfile, '.');
- c = GETC();
- goto number;
- }
- /* FIXME - misses the case "..\\\n." */
- if (c2 == '.' && PEEKN(1) == '.')
- {
- CPP_RESERVE(pfile, 4);
- CPP_PUTC_Q(pfile, '.');
- CPP_PUTC_Q(pfile, '.');
- CPP_PUTC_Q(pfile, '.');
- FORWARD(2);
- CPP_NUL_TERMINATE_Q(pfile);
- pfile->only_seen_white = 0;
- return CPP_3DOTS;
- }
- goto randomchar;
-
-op2:
- token = CPP_OTHER;
- pfile->only_seen_white = 0;
-op2any:
- CPP_RESERVE(pfile, 3);
- CPP_PUTC_Q(pfile, c);
- CPP_PUTC_Q(pfile, GETC());
- CPP_NUL_TERMINATE_Q(pfile);
- return token;
-
- case 'L':
- NEWLINE_FIX;
- c2 = PEEKC();
- if ((c2 == '\'' || c2 == '\"') && !CPP_TRADITIONAL(pfile))
- {
- CPP_PUTC(pfile, c);
- c = GETC();
- goto string;
- }
- goto letter;
-
- case '0': case '1': case '2': case '3': case '4':
- case '5': case '6': case '7': case '8': case '9':
-number:
- c2 = '.';
- for (;; )
- {
- CPP_RESERVE(pfile, 2);
- CPP_PUTC_Q(pfile, c);
- NEWLINE_FIX;
- c = PEEKC();
- if (c == EOF)
- break;
- if (!is_idchar[c] && c != '.'
- && ((c2 != 'e' && c2 != 'E'
- && ((c2 != 'p' && c2 != 'P') || CPP_C89(pfile)))
- || (c != '+' && c != '-')))
- break;
- FORWARD(1);
- c2= c;
- }
- CPP_NUL_TERMINATE_Q(pfile);
- pfile->only_seen_white = 0;
- return CPP_NUMBER;
- case 'b': case 'c': case 'd': case 'h': case 'o':
- case 'B': case 'C': case 'D': case 'H': case 'O':
- if (opts->chill && PEEKC() == '\'')
- {
- pfile->only_seen_white = 0;
- CPP_RESERVE(pfile, 2);
- CPP_PUTC_Q(pfile, c);
- CPP_PUTC_Q(pfile, '\'');
- FORWARD(1);
- for (;; )
- {
- c = GETC();
- if (c == EOF)
- goto chill_number_eof;
- if (!is_idchar[c])
- {
- if (c == '\\' && PEEKC() == '\n')
- {
- FORWARD(2);
- continue;
- }
- break;
- }
- CPP_PUTC(pfile, c);
- }
- if (c == '\'')
- {
- CPP_RESERVE(pfile, 2);
- CPP_PUTC_Q(pfile, c);
- CPP_NUL_TERMINATE_Q(pfile);
- return CPP_STRING;
- }
- else
- {
- FORWARD(-1);
-chill_number_eof:
- CPP_NUL_TERMINATE(pfile);
- return CPP_NUMBER;
- }
- }
- else
- goto letter;
- case '_':
- case 'a': case 'e': case 'f': case 'g': case 'i': case 'j':
- case 'k': case 'l': case 'm': case 'n': 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 'E': case 'F': case 'G': case 'I': case 'J':
- case 'K': case 'M': case 'N': case 'P': case 'Q': case 'R':
- case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
- case 'Y': case 'Z':
-letter:
- {
- HASHNODE *hp;
- unsigned char *ident;
- int before_name_written = CPP_WRITTEN(pfile);
- int ident_len;
- parse_name(pfile, c);
- pfile->only_seen_white = 0;
- if (pfile->no_macro_expand)
- return CPP_NAME;
- ident = pfile->token_buffer + before_name_written;
- ident_len = CPP_PWRITTEN(pfile) - ident;
- hp = cpp_lookup(pfile, ident, ident_len, -1);
- if (!hp)
- return CPP_NAME;
- if (hp->type == T_DISABLED)
- {
- if (pfile->output_escapes)
- { /* Return "@-IDENT", followed by '\0'. */
- int i;
- CPP_RESERVE(pfile, 3);
- ident = pfile->token_buffer + before_name_written;
- CPP_ADJUST_WRITTEN(pfile, 2);
- for (i = ident_len; i >= 0; i--) ident[i+2] = ident[i];
- ident[0] = '@';
- ident[1] = '-';
- }
- return CPP_NAME;
- }
-
- /* 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->value.defn->nargs >= 0)
- {
- struct parse_marker macro_mark;
- int is_macro_call, macbuf_whitespace = 0;
-
- parse_set_mark(&macro_mark, pfile);
- for (;; )
- {
- cpp_skip_hspace(pfile);
- c = PEEKC();
- is_macro_call = c == '(';
- if (c != EOF)
- {
- if (c != '\n')
- break;
- FORWARD(1);
- }
- else
- {
- if (CPP_IS_MACRO_BUFFER(CPP_BUFFER(pfile)))
- {
- if (macro_mark.position !=
- (CPP_BUFFER(pfile)->cur
- - CPP_BUFFER(pfile)->buf))
- macbuf_whitespace = 1;
-
- parse_clear_mark(&macro_mark);
- cpp_pop_buffer(pfile);
- parse_set_mark(&macro_mark, pfile);
- }
- else
- break;
- }
- }
- if (!is_macro_call)
- {
- parse_goto_mark(&macro_mark, pfile);
- if (macbuf_whitespace)
- CPP_PUTC(pfile, ' ');
- }
- parse_clear_mark(&macro_mark);
- if (!is_macro_call)
- return CPP_NAME;
- }
- /* This is now known to be a macro call. */
-
- /* it might not actually be a macro. */
- if (hp->type != T_MACRO) {
- int xbuf_len; U_CHAR *xbuf;
- CPP_SET_WRITTEN(pfile, before_name_written);
- special_symbol(hp, pfile);
- xbuf_len = CPP_WRITTEN(pfile) - before_name_written;
- xbuf = (U_CHAR *) xmalloc(xbuf_len + 1);
- CPP_SET_WRITTEN(pfile, before_name_written);
- copy_memory(CPP_PWRITTEN(pfile), xbuf, xbuf_len + 1);
- push_macro_expansion(pfile, xbuf, xbuf_len, hp);
- }
- else
- {
- /* Expand the macro, reading arguments as needed,
- and push the expansion on the input stack. */
- macroexpand(pfile, hp);
- CPP_SET_WRITTEN(pfile, before_name_written);
- }
-
- /* An extra "@ " is added to the end of a macro expansion
- to prevent accidental token pasting. We prefer to avoid
- unneeded extra spaces (for the sake of cpp-using tools like
- imake). Here we remove the space if it is safe to do so. */
- if (pfile->buffer->rlimit - pfile->buffer->cur >= 3
- && pfile->buffer->rlimit[-2] == '@'
- && pfile->buffer->rlimit[-1] == ' ')
- {
- int c1 = pfile->buffer->rlimit[-3];
- int c2 = CPP_BUF_PEEK(CPP_PREV_BUFFER(CPP_BUFFER(pfile)));
- if (c2 == EOF || !unsafe_chars(c1, c2))
- pfile->buffer->rlimit -= 2;
- }
- }
- goto get_next;
-
- case ' ': case '\t': case '\v': case '\r':
- for (;; )
- {
- CPP_PUTC(pfile, c);
- c = PEEKC();
- if (c == EOF || !is_hor_space[c])
- break;
- FORWARD(1);
- }
- return CPP_HSPACE;
-
- case '\\':
- c2 = PEEKC();
- if (c2 != '\n')
- goto randomchar;
- token = CPP_HSPACE;
- goto op2any;
-
- case '\n':
- CPP_PUTC(pfile, c);
- if (pfile->only_seen_white == 0)
- pfile->only_seen_white = 1;
- pfile->lineno++;
- output_line_command(pfile, 1, same_file);
- return CPP_VSPACE;
-
- case '(': token = CPP_LPAREN; goto char1;
- case ')': token = CPP_RPAREN; goto char1;
- case '{': token = CPP_LBRACE; goto char1;
- case '}': token = CPP_RBRACE; goto char1;
- case ',': token = CPP_COMMA; goto char1;
- case ';': token = CPP_SEMICOLON; goto char1;
-
-randomchar:
- default:
- token = CPP_OTHER;
-char1:
- pfile->only_seen_white = 0;
- CPP_PUTC(pfile, c);
- return token;
- }
- }
-}
-
-/* Like cpp_get_token, but skip spaces and comments. */
-
-enum cpp_token
-cpp_get_non_space_token(cpp_reader *pfile)
-{
- int old_written = CPP_WRITTEN(pfile);
- for (;; )
- {
- enum cpp_token token = cpp_get_token(pfile);
- if (token != CPP_COMMENT && token != CPP_POP
- && token != CPP_HSPACE && token != CPP_VSPACE)
- return token;
- CPP_SET_WRITTEN(pfile, old_written);
- }
-}
-
-/* Parse an identifier starting with C. */
-
-static int
-parse_name(cpp_reader *pfile, int c)
-{
- for (;; )
- {
- if (!is_idchar[c])
- {
- if (c == '\\' && PEEKC() == '\n')
- {
- FORWARD(2);
- continue;
- }
- FORWARD(-1);
- break;
- }
-
- if (c == '$' && CPP_PEDANTIC(pfile))
- cpp_pedwarn(pfile, "`$' in identifier");
-
- CPP_RESERVE(pfile, 2); /* One more for final NUL. */
- CPP_PUTC_Q(pfile, c);
- c = GETC();
- if (c == EOF)
- break;
- }
- CPP_NUL_TERMINATE_Q(pfile);
- return 1;
-}
-
-/* This is called after options have been processed.
- * Check options for consistency, and setup for processing input
- * from the file named FNAME. (Use standard input if FNAME==NULL.)
- * Return 1 on success, 0 on failure.
- */
-
-int
-cpp_start_read(cpp_reader *pfile, char *fname)
-{
- struct cpp_options *opts = CPP_OPTIONS(pfile);
- struct cpp_pending *pend;
- char *p;
- int f;
- cpp_buffer *fp;
- struct include_hash *ih_fake;
-
- /* The code looks at the defaults through this pointer, rather than through
- the constant structure above. This pointer gets changed if an environment
- variable specifies other defaults. */
- struct default_include *include_defaults = include_defaults_array;
-
- /* Now that we know dollars_in_ident for real,
- reset is_idchar/is_idstart. */
- is_idchar['$'] = opts->dollars_in_ident;
- is_idstart['$'] = opts->dollars_in_ident;
-
- /* 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(p, "CPATH");
- if (p != 0 && !opts->no_standard_includes)
- path_include(pfile, p);
-
- /* Do partial setup of input buffer for the sake of generating
- early #line directives (when -g is in effect). */
- fp = cpp_push_buffer(pfile, NULL, 0);
- if (!fp)
- return 0;
- if (opts->in_fname == NULL || *opts->in_fname == 0)
- {
- opts->in_fname = fname;
- if (opts->in_fname == NULL)
- opts->in_fname = "";
- }
- fp->nominal_fname = fp->fname = opts->in_fname;
- fp->lineno = 0;
-
- /* Install __LINE__, etc. Must follow initialize_char_syntax
- and option processing. */
- initialize_builtins(pfile);
-
- /* Do standard #defines that identify system and machine type. */
-
- if (!opts->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 (opts->debug_output)
- output_line_command(pfile, 0, same_file);
- cpp_define(pfile, q);
- 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. */
- /* First reverse the list. */
- opts->pending = nreverse_pending(opts->pending);
-
- for (pend = opts->pending; pend; pend = pend->next)
- {
- if (pend->cmd != NULL && pend->cmd[0] == '-')
- {
- switch (pend->cmd[1])
- {
- case 'U':
- if (opts->debug_output)
- output_line_command(pfile, 0, same_file);
- cpp_undef(pfile, pend->arg);
- break;
- case 'D':
- if (opts->debug_output)
- output_line_command(pfile, 0, same_file);
- cpp_define(pfile, pend->arg);
- break;
- }
- }
- }
-
- opts->done_initializing = 1;
-
- { /* Read the appropriate environment variable and if it exists
- replace include_defaults with the listed path. */
- char *epath = 0;
- switch ((opts->objc << 1) + opts->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) {
- char *nstore = (char *) alloca(strlen(epath) + 2);
- 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) {
- /* Handle cases like c:/usr/lib:d:/gcc/lib */
- if ((*endp == PATH_SEPARATOR)
- || *endp == 0) {
- strncpy(nstore, startp, endp-startp);
- if (endp == startp)
- strcpy(nstore, ".");
- else
- nstore[endp-startp] = '\0';
-
- include_defaults[num_dirs].fname = xstrdup(nstore);
- include_defaults[num_dirs].component = 0;
- include_defaults[num_dirs].cplusplus = opts->cplusplus;
- include_defaults[num_dirs].cxx_aware = 1;
- num_dirs++;
- if (*endp == '\0')
- break;
- endp = startp = endp + 1;
- } else
- endp++;
- }
- /* Put the usual defaults back in at the end. */
- copy_memory((char *) include_defaults_array,
- (char *) &include_defaults[num_dirs],
- sizeof (include_defaults_array));
- }
- }
-
- /* Unless -fnostdinc,
- tack on the standard include file dirs to the specified list */
- if (!opts->no_standard_includes) {
- struct default_include *p = include_defaults;
- char *specd_prefix = opts->include_prefix;
- char *default_prefix = xstrdup(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
- || (opts->cplusplus && !opts->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. */
- int this_len = strlen(specd_prefix)
- + strlen(p->fname) - default_len;
- char *str = (char *) xmalloc(this_len + 1);
- strcpy(str, specd_prefix);
- strcat(str, p->fname + default_len);
-
- append_include_chain(pfile, &opts->system_include,
- str, !p->cxx_aware);
- }
- }
- }
- /* Search ordinary names for GNU include directories. */
- for (p = include_defaults; p->fname; p++) {
- /* Some standard dirs are only for C++. */
- if (!p->cplusplus
- || (opts->cplusplus && !opts->no_standard_cplusplus_includes)) {
- const char *str = update_path(p->fname, p->component);
- append_include_chain(pfile, &opts->system_include,
- str, !p->cxx_aware);
- }
- }
- }
-
- merge_include_chains(opts);
-
- /* With -v, print the list of dirs to search. */
- if (opts->verbose) {
- struct file_name_list *p;
- fprintf(stderr, "#include \"...\" search starts here:\n");
- for (p = opts->quote_include; p; p = p->next) {
- if (p == opts->bracket_include)
- fprintf(stderr, "#include <...> search starts here:\n");
- fprintf(stderr, " %s\n", p->name);
- }
- fprintf(stderr, "End of search list.\n");
- }
-
- /* Copy the entire contents of the main input file into
- the stacked input buffer previously allocated for it. */
- if (fname == NULL || *fname == 0) {
- fname = "";
- f = 0;
- } else if ((f = open(fname, O_RDONLY, 0666)) < 0)
- cpp_pfatal_with_name(pfile, fname);
-
- /* -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 (opts->print_deps_missing_files
- && (opts->print_deps == 0 || !opts->no_output))
- {
- cpp_fatal(pfile, "-MG must be specified with one of -M or -MM");
- return 0;
- }
-
- /* 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 (opts->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");
- opts->print_deps = 2;
- }
- else
- opts->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)
- {
- opts->deps_target = s + 1;
- output_file = (char *) xmalloc(s - spec + 1);
- copy_memory(spec, output_file, s - spec);
- output_file[s - spec] = 0;
- }
- else
- {
- opts->deps_target = 0;
- output_file = spec;
- }
-
- opts->deps_file = output_file;
- opts->print_deps_append = 1;
- }
-
- /* For -M, print the expected object file name
- as the target of this Make-rule. */
- if (opts->print_deps)
- {
- pfile->deps_allocated_size = 200;
- pfile->deps_buffer = (char *) xmalloc(pfile->deps_allocated_size);
- pfile->deps_buffer[0] = 0;
- pfile->deps_size = 0;
- pfile->deps_column = 0;
-
- if (opts->deps_target)
- deps_output(pfile, opts->deps_target, ':');
- else if (*opts->in_fname == 0)
- deps_output(pfile, "-", ':');
- else
- {
- char *p, *q, *r;
- int len, x;
- static char *known_suffixes[] = { ".c", ".C", ".s", ".S", ".m",
- ".cc", ".cxx", ".cpp", ".cp",
- ".c++", 0};
-
- /* Discard all directory prefixes from filename. */
- if ((q = strrchr(opts->in_fname, '/')) != NULL
-#ifdef DIR_SEPARATOR
- && (q = strrchr(opts->in_fname, DIR_SEPARATOR)) != NULL
-#endif
- )
- ++q;
- else
- q = opts->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;
- /* Point to the filename suffix. */
- r = strrchr(p, '.');
- /* Compare against the known suffixes. */
- x = 0;
- while (known_suffixes[x] != 0)
- {
- if (strncmp(known_suffixes[x], r, q - r) == 0)
- {
- /* Make q point to the bit we're going to overwrite
- with an object suffix. */
- q = r;
- break;
- }
- x++;
- }
-
- /* Supply our own suffix. */
- strcpy(q, ".o");
-
- deps_output(pfile, p, ':');
- deps_output(pfile, opts->in_fname, ' ');
- }
- }
-
-#if 0
- /* 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);
-#endif
-
- /* Must call finclude() on the main input before processing
- -include switches; otherwise the -included text winds up
- after the main input. */
- ih_fake = (struct include_hash *) xmalloc(sizeof (struct include_hash));
- ih_fake->next = 0;
- ih_fake->next_this_file = 0;
- ih_fake->foundhere = ABSOLUTE_PATH; /* well sort of ... */
- ih_fake->name = fname;
- ih_fake->control_macro = 0;
- ih_fake->buf = (char *)-1;
- ih_fake->limit = 0;
- if (!finclude(pfile, f, ih_fake))
- return 0;
- output_line_command(pfile, 0, same_file);
- pfile->only_seen_white = 2;
-
- /* The -imacros files can be scanned now, but the -include files
- have to be pushed onto the include stack and processed later,
- in the main loop calling cpp_get_token. That means the -include
- files have to be processed in reverse order of the pending list,
- which means the pending list has to be reversed again, which
- means the -imacros files have to be done separately and first. */
-
- pfile->no_record_file++;
- opts->no_output++;
- for (pend = opts->pending; pend; pend = pend->next)
- {
- if (pend->cmd != NULL)
- {
- if (strcmp(pend->cmd, "-imacros") == 0)
- {
- int fd = open(pend->arg, O_RDONLY, 0666);
- if (fd < 0)
- {
- cpp_perror_with_name(pfile, pend->arg);
- return 0;
- }
- if (!cpp_push_buffer(pfile, NULL, 0))
- return 0;
-
- ih_fake = (struct include_hash *)
- xmalloc(sizeof (struct include_hash));
- ih_fake->next = 0;
- ih_fake->next_this_file = 0;
- ih_fake->foundhere = ABSOLUTE_PATH; /* well sort of ... */
- ih_fake->name = pend->arg;
- ih_fake->control_macro = 0;
- ih_fake->buf = (char *)-1;
- ih_fake->limit = 0;
- if (!finclude(pfile, fd, ih_fake))
- cpp_scan_buffer(pfile);
- free(ih_fake);
- }
- }
- }
- opts->no_output--;
- opts->pending = nreverse_pending(opts->pending);
- for (pend = opts->pending; pend; pend = pend->next)
- {
- if (pend->cmd != NULL)
- {
- if (strcmp(pend->cmd, "-include") == 0)
- {
- int fd = open(pend->arg, O_RDONLY, 0666);
- if (fd < 0)
- {
- cpp_perror_with_name(pfile, pend->arg);
- return 0;
- }
- if (!cpp_push_buffer(pfile, NULL, 0))
- return 0;
-
- ih_fake = (struct include_hash *)
- xmalloc(sizeof (struct include_hash));
- ih_fake->next = 0;
- ih_fake->next_this_file = 0;
- ih_fake->foundhere = ABSOLUTE_PATH; /* well sort of ... */
- ih_fake->name = pend->arg;
- ih_fake->control_macro = 0;
- ih_fake->buf = (char *)-1;
- ih_fake->limit = 0;
- if (finclude(pfile, fd, ih_fake))
- output_line_command(pfile, 0, enter_file);
- }
- }
- }
- pfile->no_record_file--;
-
- /* Free the pending list. */
- for (pend = opts->pending; pend; )
- {
- struct cpp_pending *next = pend->next;
- free(pend);
- pend = next;
- }
- opts->pending = NULL;
-
-
- return 1;
-}
-
-void
-cpp_reader_init(cpp_reader *pfile)
-{
- zero_memory((char *) pfile, sizeof (cpp_reader));
- pfile->get_token = cpp_get_token;
-
- pfile->token_buffer_size = 200;
- pfile->token_buffer = (U_CHAR *) xmalloc(pfile->token_buffer_size);
- CPP_SET_WRITTEN(pfile, 0);
-
- pfile->timebuf = NULL;
- pfile->only_seen_white = 1;
- pfile->buffer = CPP_NULL_BUFFER(pfile);
- pfile->actual_dirs = NULL;
-}
-
-static struct cpp_pending *
-nreverse_pending(struct cpp_pending *list)
-{
- register struct cpp_pending *prev = 0, *next, *pend;
- for (pend = list; pend; pend = next)
- {
- next = pend->next;
- pend->next = prev;
- prev = pend;
- }
- return prev;
-}
-
-static void
-push_pending(cpp_reader *pfile, char *cmd, char *arg)
-{
- struct cpp_pending *pend
- = (struct cpp_pending *) xmalloc(sizeof (struct cpp_pending));
- pend->cmd = cmd;
- pend->arg = arg;
- pend->next = CPP_OPTIONS(pfile)->pending;
- CPP_OPTIONS(pfile)->pending = pend;
-}
-
-
-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 sources are in C89\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(" -+ 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(" -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");
-}
-
-
-/* Handle one command-line option in (argc, argv).
- Can be called multiple times, to handle multiple sets of options.
- Returns number of strings consumed. */
-int
-cpp_handle_option(cpp_reader *pfile, int argc, char **argv)
-{
- struct cpp_options *opts = CPP_OPTIONS(pfile);
- int i = 0;
-
- if (argv[i][0] != '-') {
- if (opts->out_fname != NULL)
- {
- print_help();
- cpp_fatal(pfile, "Too many arguments");
- }
- else if (opts->in_fname != NULL)
- opts->out_fname = argv[i];
- else
- opts->in_fname = argv[i];
- } else {
- switch (argv[i][1]) {
-
-missing_filename:
- cpp_fatal(pfile, "Filename missing after `%s' option", argv[i]);
- return argc;
-missing_dirname:
- cpp_fatal(pfile, "Directory name missing after `%s' option", argv[i]);
- return argc;
-
- case 'I': /* Add directory to path for includes. */
- if (!strcmp(argv[i] + 2, "-"))
- {
- if (!opts->ignore_srcdir)
- {
- opts->ignore_srcdir = 1;
- /* Don't use any preceding -I directories for #include <...>. */
- opts->quote_include = opts->bracket_include;
- opts->bracket_include = 0;
- }
- }
- else
- {
- char *fname;
- if (argv[i][2] != 0)
- fname = argv[i] + 2;
- else if (i + 1 == argc)
- goto missing_dirname;
- else
- fname = argv[++i];
- append_include_chain(pfile, &opts->bracket_include, fname, 0);
- }
- break;
-
- case 'i':
- /* Add directory to beginning of system include path, as a system
- include directory. */
- if (!strcmp(argv[i], "-isystem"))
- {
- if (i + 1 == argc)
- goto missing_filename;
- append_include_chain(pfile, &opts->system_include, argv[++i], 1);
- }
- /* Add directory to end of path for includes,
- with the default prefix at the front of its name. */
- else if (!strcmp(argv[i], "-iwithprefix"))
- {
- char *fname;
- if (i + 1 == argc)
- goto missing_dirname;
- ++i;
-
- if (opts->include_prefix != 0)
- {
- fname = xmalloc(strlen(opts->include_prefix)
- + strlen(argv[i]) + 1);
- strcpy(fname, opts->include_prefix);
- strcat(fname, argv[i]);
- }
- else
- {
- fname = xmalloc(strlen(GCC_INCLUDE_DIR)
- + strlen(argv[i]) + 1);
- strcpy(fname, GCC_INCLUDE_DIR);
- /* Remove the `include' from /usr/local/lib/gcc.../include. */
- if (!strcmp(fname + strlen(fname) - 8, "/include"))
- fname[strlen(fname) - 7] = 0;
- strcat(fname, argv[i]);
- }
-
- append_include_chain(pfile, &opts->system_include, fname, 0);
- }
- /* Add directory to main path for includes,
- with the default prefix at the front of its name. */
- else if (!strcmp(argv[i], "-iwithprefix"))
- {
- char *fname;
- if (i + 1 == argc)
- goto missing_dirname;
- ++i;
-
- if (opts->include_prefix != 0)
- {
- fname = xmalloc(strlen(opts->include_prefix)
- + strlen(argv[i]) + 1);
- strcpy(fname, opts->include_prefix);
- strcat(fname, argv[i]);
- }
- else
- {
- fname = xmalloc(strlen(GCC_INCLUDE_DIR)
- + strlen(argv[i]) + 1);
- strcpy(fname, GCC_INCLUDE_DIR);
- /* Remove the `include' from /usr/local/lib/gcc.../include. */
- if (!strcmp(fname + strlen(fname) - 8, "/include"))
- fname[strlen(fname) - 7] = 0;
- strcat(fname, argv[i]);
- }
-
- append_include_chain(pfile, &opts->bracket_include, fname, 0);
- }
- /* Add directory to end of path for includes. */
- else if (!strcmp(argv[i], "-idirafter"))
- {
- if (i + 1 == argc)
- goto missing_dirname;
- append_include_chain(pfile, &opts->after_include, argv[++i], 0);
- }
- else if (!strcmp(argv[i], "-include") || !strcmp(argv[i], "-imacros"))
- {
- if (i + 1 == argc)
- goto missing_filename;
- else
- push_pending(pfile, argv[i], argv[i+1]), i++;
- }
- else if (!strcmp(argv[i], "-iprefix"))
- {
- if (i + 1 == argc)
- goto missing_filename;
- else
- opts->include_prefix = argv[++i];
- }
- else if (!strcmp(argv[i], "-ifoutput"))
- opts->output_conditionals = 1;
-
- break;
-
- case 'o':
- if (opts->out_fname != NULL)
- {
- cpp_fatal(pfile, "Output filename specified twice");
- return argc;
- }
- if (i + 1 == argc)
- goto missing_filename;
- opts->out_fname = argv[++i];
- if (!strcmp(opts->out_fname, "-"))
- opts->out_fname = "";
- break;
-
- case 'p':
- if (!strcmp(argv[i], "-pedantic"))
- CPP_PEDANTIC(pfile) = 1;
- else if (!strcmp(argv[i], "-pedantic-errors")) {
- CPP_PEDANTIC(pfile) = 1;
- opts->pedantic_errors = 1;
- }
-#if 0
- else if (!strcmp(argv[i], "-pcp")) {
- char *pcp_fname = argv[++i];
- pcp_outfile = ((pcp_fname[0] != '-' || pcp_fname[1] != '\0')
- ? fopen(pcp_fname, "w")
- : fdopen(dup(fileno(stdout)), "w"));
- if (pcp_outfile == 0)
- cpp_pfatal_with_name(pfile, pcp_fname);
- no_precomp = 1;
- }
-#endif
- break;
-
- case 't':
- if (!strcmp(argv[i], "-traditional")) {
- opts->traditional = 1;
- opts->cplusplus_comments = 0;
- } else if (!strcmp(argv[i], "-trigraphs")) {
- if (!opts->chill)
- opts->no_trigraphs = 0;
- }
- break;
-
- case 'l':
- if (!strcmp(argv[i], "-lang-c"))
- opts->cplusplus = 0, opts->cplusplus_comments = 1, opts->c89 = 0,
- opts->objc = 0;
- if (!strcmp(argv[i], "-lang-c89"))
- opts->cplusplus = 0, opts->cplusplus_comments = 0, opts->c89 = 1,
- opts->objc = 0;
- if (!strcmp(argv[i], "-lang-c++"))
- opts->cplusplus = 1, opts->cplusplus_comments = 1, opts->c89 = 0,
- opts->objc = 0;
- if (!strcmp(argv[i], "-lang-objc"))
- opts->cplusplus = 0, opts->cplusplus_comments = 1, opts->c89 = 0,
- opts->objc = 1;
- if (!strcmp(argv[i], "-lang-objc++"))
- opts->cplusplus = 1, opts->cplusplus_comments = 1, opts->c89 = 0,
- opts->objc = 1;
- if (!strcmp(argv[i], "-lang-asm"))
- opts->lang_asm = 1;
- if (!strcmp(argv[i], "-lint"))
- opts->for_lint = 1;
- if (!strcmp(argv[i], "-lang-chill"))
- opts->objc = 0, opts->cplusplus = 0, opts->chill = 1,
- opts->traditional = 1, opts->no_trigraphs = 1,
- opts->traditional = 1, opts->cplusplus_comments = 0;
- break;
-
- case '+':
- opts->cplusplus = 1, opts->cplusplus_comments = 1;
- break;
-
- case 'w':
- opts->inhibit_warnings = 1;
- break;
-
- case 'W':
- if (!strcmp(argv[i], "-Wtrigraphs"))
- opts->warn_trigraphs = 1;
- else if (!strcmp(argv[i], "-Wno-trigraphs"))
- opts->warn_trigraphs = 0;
- else if (!strcmp(argv[i], "-Wcomment"))
- opts->warn_comments = 1;
- else if (!strcmp(argv[i], "-Wno-comment"))
- opts->warn_comments = 0;
- else if (!strcmp(argv[i], "-Wcomments"))
- opts->warn_comments = 1;
- else if (!strcmp(argv[i], "-Wno-comments"))
- opts->warn_comments = 0;
- else if (!strcmp(argv[i], "-Wtraditional"))
- opts->warn_stringify = 1;
- else if (!strcmp(argv[i], "-Wno-traditional"))
- opts->warn_stringify = 0;
- else if (!strcmp(argv[i], "-Wundef"))
- opts->warn_undef = 1;
- else if (!strcmp(argv[i], "-Wno-undef"))
- opts->warn_undef = 0;
- else if (!strcmp(argv[i], "-Wimport"))
- opts->warn_import = 1;
- else if (!strcmp(argv[i], "-Wno-import"))
- opts->warn_import = 0;
- else if (!strcmp(argv[i], "-Werror"))
- opts->warnings_are_errors = 1;
- else if (!strcmp(argv[i], "-Wno-error"))
- opts->warnings_are_errors = 0;
- else if (!strcmp(argv[i], "-Wall"))
- {
- opts->warn_trigraphs = 1;
- opts->warn_comments = 1;
- }
- 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"))
- {
- opts->print_deps_missing_files = 1;
- break;
- }
- if (!strcmp(argv[i], "-M"))
- opts->print_deps = 2;
- else if (!strcmp(argv[i], "-MM"))
- opts->print_deps = 1;
- else if (!strcmp(argv[i], "-MD"))
- opts->print_deps = 2;
- else if (!strcmp(argv[i], "-MMD"))
- opts->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)
- goto missing_filename;
- opts->deps_file = argv[++i];
- }
- else
- {
- /* For -M and -MM, write deps on standard output
- and suppress the usual output. */
- opts->no_output = 1;
- }
- break;
-
- case 'd':
- {
- char *p = argv[i] + 2;
- char c;
- while ((c = *p++) != 0) {
- /* Arg to -d specifies what parts of macros to dump */
- switch (c) {
- case 'M':
- opts->dump_macros = dump_only;
- opts->no_output = 1;
- break;
- case 'N':
- opts->dump_macros = dump_names;
- break;
- case 'D':
- opts->dump_macros = dump_definitions;
- break;
- case 'I':
- opts->dump_includes = 1;
- break;
- }
- }
- }
- break;
-
- case 'g':
- if (argv[i][2] == '3')
- opts->debug_output = 1;
- break;
-
- case '-':
- if (strcmp(argv[i], "--help") != 0)
- return i;
- print_help();
- break;
-
- case 'v':
- fprintf(stderr, "GNU CPP version %s", version_string);
-#ifdef TARGET_VERSION
- TARGET_VERSION;
-#endif
- fprintf(stderr, "\n");
- opts->verbose = 1;
- break;
-
- case 'H':
- opts->print_include_names = 1;
- break;
-
- case 'D':
- if (argv[i][2] != 0)
- push_pending(pfile, "-D", argv[i] + 2);
- else if (i + 1 == argc)
- {
- cpp_fatal(pfile, "Macro name missing after -D option");
- return argc;
- }
- else
- i++, push_pending(pfile, "-D", argv[i]);
- break;
-
- case 'U': /* JF #undef something */
- if (argv[i][2] != 0)
- push_pending(pfile, "-U", argv[i] + 2);
- else if (i + 1 == argc)
- {
- cpp_fatal(pfile, "Macro name missing after -U option");
- return argc;
- }
- else
- push_pending(pfile, "-U", argv[i+1]), i++;
- break;
-
- case 'C':
- opts->put_out_comments = 1;
- break;
-
- case 'E': /* -E comes from cc -E; ignore it. */
- break;
-
- case 'P':
- opts->no_line_commands = 1;
- break;
-
- case '$': /* Don't include $ in identifiers. */
- opts->dollars_in_ident = 0;
- break;
-
- case 'n':
- if (!strcmp(argv[i], "-nostdinc"))
- /* -nostdinc causes no default include directories.
- You must specify all include-file directories with -I. */
- opts->no_standard_includes = 1;
- else if (!strcmp(argv[i], "-nostdinc++"))
- /* -nostdinc++ causes no default C++-specific include directories. */
- opts->no_standard_cplusplus_includes = 1;
-#if 0
- else if (!strcmp(argv[i], "-noprecomp"))
- no_precomp = 1;
-#endif
- break;
-
- case 'r':
- if (!strcmp(argv[i], "-remap"))
- opts->remap = 1;
- break;
-
- case 'u':
- /* Sun compiler passes undocumented switch "-undef".
- Let's assume it means to inhibit the predefined symbols. */
- opts->inhibit_predefs = 1;
- break;
-
- case '\0': /* JF handle '-' as file name meaning stdin or stdout */
- if (opts->in_fname == NULL) {
- opts->in_fname = "";
- break;
- } else if (opts->out_fname == NULL) {
- opts->out_fname = "";
- break;
- } /* else fall through into error */
-
- default:
- return i;
- }
- }
-
- return i + 1;
-}
-
-/* Handle command-line options in (argc, argv).
- Can be called multiple times, to handle multiple sets of options.
- Returns if an unrecognized option is seen.
- Returns number of strings consumed. */
-
-int
-cpp_handle_options(cpp_reader *pfile, int argc, char **argv)
-{
- int i;
- int strings_processed;
- for (i = 0; i < argc; i += strings_processed)
- {
- strings_processed = cpp_handle_option(pfile, argc - i, argv + i);
- if (strings_processed == 0)
- break;
- }
- return i;
-}
-
-void
-cpp_finish(cpp_reader *pfile)
-{
- struct cpp_options *opts = CPP_OPTIONS(pfile);
-
- if (opts->print_deps)
- {
- /* Stream on which to print the dependency information. */
- FILE *deps_stream;
-
- /* Don't actually write the deps file if compilation has failed. */
- if (pfile->errors == 0)
- {
- char *deps_mode = opts->print_deps_append ? "a" : "w";
- if (opts->deps_file == 0)
- deps_stream = stdout;
- else if ((deps_stream = fopen(opts->deps_file, deps_mode)) == 0)
- cpp_pfatal_with_name(pfile, opts->deps_file);
- fputs(pfile->deps_buffer, deps_stream);
- putc('\n', deps_stream);
- if (opts->deps_file)
- {
- if (ferror(deps_stream) || fclose(deps_stream) != 0)
- cpp_fatal(pfile, "I/O error on output");
- }
- }
- }
-
-#if 0
- /* Debugging: dump statistics on the include hash table. */
- {
- struct include_hash *x;
- int i, j;
-
- for(i = 0; i < ALL_INCLUDE_HASHSIZE; i++)
- {
- x = pfile->all_include_files[i];
- j = 0;
- while(x)
- {
- j++;
- x = x->next;
- }
- fprintf(stderr, "%d/%d ", i, j);
- }
- fputc('\n', stderr);
- }
-#endif
-
-}
-
-/* Free resources used by PFILE.
- This is the cpp_reader 'finalizer' or 'destructor' (in C++ terminology). */
-
-void
-cpp_cleanup(cpp_reader *pfile)
-{
- int i;
- while ( CPP_BUFFER(pfile) != CPP_NULL_BUFFER(pfile))
- cpp_pop_buffer(pfile);
-
- if (pfile->token_buffer)
- {
- free(pfile->token_buffer);
- pfile->token_buffer = NULL;
- }
-
- if (pfile->deps_buffer)
- {
- free(pfile->deps_buffer);
- pfile->deps_buffer = NULL;
- pfile->deps_allocated_size = 0;
- }
-
- while (pfile->if_stack)
- {
- IF_STACK_FRAME *temp = pfile->if_stack;
- pfile->if_stack = temp->next;
- free(temp);
- }
-
- for (i = ALL_INCLUDE_HASHSIZE; --i >= 0; )
- {
- struct include_hash *imp = pfile->all_include_files[i];
- while (imp)
- {
- struct include_hash *next = imp->next;
-#if 0
- /* This gets freed elsewhere - I think. */
- free(imp->name);
-#endif
- free(imp);
- imp = next;
- }
- pfile->all_include_files[i] = 0;
- }
-
- cpp_hash_cleanup(pfile);
-}
-
-/* Initialize PMARK to remember the current position of PFILE. */
-
-void
-parse_set_mark(struct parse_marker *pmark, cpp_reader *pfile)
-{
- cpp_buffer *pbuf = CPP_BUFFER(pfile);
- pmark->next = pbuf->marks;
- pbuf->marks = pmark;
- pmark->buf = pbuf;
- pmark->position = pbuf->cur - pbuf->buf;
-}
-
-/* Cleanup PMARK - we no longer need it. */
-
-void
-parse_clear_mark(struct parse_marker *pmark)
-{
- struct parse_marker **pp = &pmark->buf->marks;
- for (;; pp = &(*pp)->next) {
- if (*pp == NULL) abort();
- if (*pp == pmark) break;
- }
- *pp = pmark->next;
-}
-
-/* Backup the current position of PFILE to that saved in PMARK. */
-
-void
-parse_goto_mark(struct parse_marker *pmark, cpp_reader *pfile)
-{
- cpp_buffer *pbuf = CPP_BUFFER(pfile);
- if (pbuf != pmark->buf)
- cpp_fatal(pfile, "internal error %s", "parse_goto_mark");
- pbuf->cur = pbuf->buf + pmark->position;
-}
-
-/* Reset PMARK to point to the current position of PFILE. (Same
- as parse_clear_mark (PMARK), parse_set_mark (PMARK, PFILE) but faster. */
-
-void
-parse_move_mark(struct parse_marker *pmark, cpp_reader *pfile)
-{
- cpp_buffer *pbuf = CPP_BUFFER(pfile);
- if (pbuf != pmark->buf)
- cpp_fatal(pfile, "internal error %s", "parse_move_mark");
- pmark->position = pbuf->cur - pbuf->buf;
-}
-
-
-void
-cpp_print_file_and_line(cpp_reader *pfile)
-{
- cpp_buffer *ip = cpp_file_buffer(pfile);
-
- if (ip != NULL)
- {
- long line, col;
- cpp_buf_line_and_col(ip, &line, &col);
- cpp_file_line_for_message(pfile, ip->nominal_fname,
- line, pfile->show_column ? col : -1);
- }
-}
-
-static void
-v_cpp_error(cpp_reader *pfile, const char *msg, va_list ap)
-{
- cpp_print_containing_files(pfile);
- cpp_print_file_and_line(pfile);
- v_cpp_message(pfile, 1, msg, ap);
-}
-
-void
-cpp_error(cpp_reader * pfile, const char *msg, ...)
-{
- va_list ap;
-
- va_start(ap, msg);
-
-
- v_cpp_error(pfile, msg, ap);
- va_end(ap);
-}
-
-/* Print error message but don't count it. */
-
-static void
-v_cpp_warning(cpp_reader *pfile, const char *msg, va_list ap)
-{
- if (CPP_OPTIONS(pfile)->inhibit_warnings)
- return;
-
- if (CPP_OPTIONS(pfile)->warnings_are_errors)
- pfile->errors++;
-
- cpp_print_containing_files(pfile);
- cpp_print_file_and_line(pfile);
- v_cpp_message(pfile, 0, msg, ap);
-}
-
-void
-cpp_warning(cpp_reader * pfile, const char *msg, ...)
-{
- va_list ap;
-
- va_start(ap, msg);
-
-
- v_cpp_warning(pfile, msg, ap);
- va_end(ap);
-}
-
-/* Print an error message and maybe count it. */
-
-void
-cpp_pedwarn(cpp_reader * pfile, const char *msg, ...)
-{
- va_list ap;
-
- va_start(ap, msg);
-
-
- if (CPP_OPTIONS(pfile)->pedantic_errors)
- v_cpp_error(pfile, msg, ap);
- else
- v_cpp_warning(pfile, msg, ap);
- va_end(ap);
-}
-
-static void
-v_cpp_error_with_line(cpp_reader *pfile, int line, int column, const char *msg, va_list ap)
-{
- cpp_buffer *ip = cpp_file_buffer(pfile);
-
- cpp_print_containing_files(pfile);
-
- if (ip != NULL)
- cpp_file_line_for_message(pfile, ip->nominal_fname, line, column);
-
- v_cpp_message(pfile, 1, msg, ap);
-}
-
-void
-cpp_error_with_line(cpp_reader * pfile, int line, int column, const char *msg, ...)
-{
- va_list ap;
-
- va_start(ap, msg);
-
-
- v_cpp_error_with_line(pfile, line, column, msg, ap);
- va_end(ap);
-}
-
-static void
-v_cpp_warning_with_line(cpp_reader *pfile, int line, int column, const char *msg, va_list ap)
-{
- cpp_buffer *ip;
-
- if (CPP_OPTIONS(pfile)->inhibit_warnings)
- return;
-
- if (CPP_OPTIONS(pfile)->warnings_are_errors)
- pfile->errors++;
-
- cpp_print_containing_files(pfile);
-
- ip = cpp_file_buffer(pfile);
-
- if (ip != NULL)
- cpp_file_line_for_message(pfile, ip->nominal_fname, line, column);
-
- v_cpp_message(pfile, 0, msg, ap);
-}
-
-#if 0
-static void
-cpp_warning_with_line(cpp_reader * pfile, int line, int column, const char *msg, ...)
-{
- va_list ap;
-
- va_start(ap, msg);
-
-
- v_cpp_warning_with_line(pfile, line, column, msg, ap);
- va_end(ap);
-}
-#endif
-
-void
-cpp_pedwarn_with_line(cpp_reader * pfile, int line, int column, const char *msg, ...)
-{
- va_list ap;
-
- va_start(ap, msg);
-
-
- if (CPP_OPTIONS(pfile)->pedantic_errors)
- v_cpp_error_with_line(pfile, column, line, msg, ap);
- else
- v_cpp_warning_with_line(pfile, line, column, msg, ap);
- va_end(ap);
-}
-
-/* Report a warning (or an error if pedantic_errors)
- giving specified file name and line number, not current. */
-
-void
-cpp_pedwarn_with_file_and_line(cpp_reader *pfile, char *file, int line, const char *msg, ...)
-{
- va_list ap;
-
- va_start(ap, msg);
-
-
- if (!CPP_OPTIONS(pfile)->pedantic_errors
- && CPP_OPTIONS(pfile)->inhibit_warnings)
- return;
- if (file != NULL)
- cpp_file_line_for_message(pfile, file, line, -1);
- v_cpp_message(pfile, CPP_OPTIONS(pfile)->pedantic_errors, msg, ap);
- va_end(ap);
-}
-
-/* my_strerror - return the descriptive text associated with an
- `errno' code. */
-
-static char *
-my_strerror(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 including a message from `errno'. */
-
-void
-cpp_error_from_errno(cpp_reader *pfile, const char *name)
-{
- cpp_message_from_errno(pfile, 1, name);
-}
-
-void
-cpp_message_from_errno(cpp_reader *pfile, int is_error, const char *name)
-{
- int e = errno;
- cpp_buffer *ip = cpp_file_buffer(pfile);
-
- cpp_print_containing_files(pfile);
-
- if (ip != NULL)
- cpp_file_line_for_message(pfile, ip->nominal_fname, ip->lineno, -1);
-
- cpp_message(pfile, is_error, "%s: %s", name, my_strerror(e));
-}
-
-void
-cpp_perror_with_name(cpp_reader *pfile, const char *name)
-{
- cpp_message(pfile, 1, "%s: %s: %s", progname, name, my_strerror(errno));
-}
-
-/* TODO:
- * No pre-compiled header file support.
- *
- * Possibly different enum token codes for each C/C++ token.
- *
- * Find and cleanup remaining uses of static variables,
- *
- * Support for trigraphs.
- *
- * Support -dM flag (dump_all_macros).
- *
- * Support for_lint flag.
- */
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-06 04:07:12 +0000