diff options
Diffstat (limited to 'tools/preproc')
-rw-r--r-- | tools/preproc/.gitignore | 2 | ||||
-rw-r--r-- | tools/preproc/LICENSE | 38 | ||||
-rw-r--r-- | tools/preproc/asm_file.cpp | 1064 | ||||
-rw-r--r-- | tools/preproc/c_file.cpp | 860 | ||||
-rw-r--r-- | tools/preproc/charmap.cpp | 816 | ||||
-rw-r--r-- | tools/preproc/preproc.cpp | 312 | ||||
-rw-r--r-- | tools/preproc/string_parser.cpp | 710 | ||||
-rw-r--r-- | tools/preproc/utf8.cpp | 184 |
8 files changed, 1993 insertions, 1993 deletions
diff --git a/tools/preproc/.gitignore b/tools/preproc/.gitignore index eb34708..afa6b22 100644 --- a/tools/preproc/.gitignore +++ b/tools/preproc/.gitignore @@ -1 +1 @@ -preproc +preproc
diff --git a/tools/preproc/LICENSE b/tools/preproc/LICENSE index 534d153..3ef9505 100644 --- a/tools/preproc/LICENSE +++ b/tools/preproc/LICENSE @@ -1,19 +1,19 @@ -Copyright (c) 2016 YamaArashi - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in -all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -THE SOFTWARE. +Copyright (c) 2016 YamaArashi
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/tools/preproc/asm_file.cpp b/tools/preproc/asm_file.cpp index 7756cad..ce0bf31 100644 --- a/tools/preproc/asm_file.cpp +++ b/tools/preproc/asm_file.cpp @@ -1,532 +1,532 @@ -// Copyright(c) 2016 YamaArashi -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <cstdio> -#include <cstdarg> -#include <stdexcept> -#include "preproc.h" -#include "asm_file.h" -#include "char_util.h" -#include "utf8.h" -#include "string_parser.h" - -AsmFile::AsmFile(std::string filename) : m_filename(filename) -{ - FILE *fp = std::fopen(filename.c_str(), "rb"); - - if (fp == NULL) - FATAL_ERROR("Failed to open \"%s\" for reading.\n", filename.c_str()); - - std::fseek(fp, 0, SEEK_END); - - m_size = std::ftell(fp); - - if (m_size < 0) - FATAL_ERROR("File size of \"%s\" is less than zero.\n", filename.c_str()); - - m_buffer = new char[m_size + 1]; - - std::rewind(fp); - - if (std::fread(m_buffer, m_size, 1, fp) != 1) - FATAL_ERROR("Failed to read \"%s\".\n", filename.c_str()); - - m_buffer[m_size] = 0; - - std::fclose(fp); - - m_pos = 0; - m_lineNum = 1; - m_lineStart = 0; - - RemoveComments(); -} - -AsmFile::AsmFile(AsmFile&& other) : m_filename(std::move(other.m_filename)) -{ - m_buffer = other.m_buffer; - m_pos = other.m_pos; - m_size = other.m_size; - m_lineNum = other.m_lineNum; - m_lineStart = other.m_lineStart; - - other.m_buffer = nullptr; -} - -AsmFile::~AsmFile() -{ - delete[] m_buffer; -} - -// Removes comments to simplify further processing. -// It stops upon encountering a null character, -// which may or may not be the end of file marker. -// If it's not, the error will be caught later. -void AsmFile::RemoveComments() -{ - long pos = 0; - char stringChar = 0; - - for (;;) - { - if (m_buffer[pos] == 0) - return; - - if (stringChar != 0) - { - if (m_buffer[pos] == '\\' && m_buffer[pos + 1] == stringChar) - { - pos += 2; - } - else - { - if (m_buffer[pos] == stringChar) - stringChar = 0; - pos++; - } - } - else if (m_buffer[pos] == '@' && (pos == 0 || m_buffer[pos - 1] != '\\')) - { - while (m_buffer[pos] != '\n' && m_buffer[pos] != 0) - m_buffer[pos++] = ' '; - } - else if (m_buffer[pos] == '/' && m_buffer[pos + 1] == '*') - { - m_buffer[pos++] = ' '; - m_buffer[pos++] = ' '; - - for (;;) - { - if (m_buffer[pos] == 0) - return; - - if (m_buffer[pos] == '*' && m_buffer[pos + 1] == '/') - { - m_buffer[pos++] = ' '; - m_buffer[pos++] = ' '; - break; - } - else - { - if (m_buffer[pos] != '\n') - m_buffer[pos] = ' '; - pos++; - } - } - } - else - { - if (m_buffer[pos] == '"' || m_buffer[pos] == '\'') - stringChar = m_buffer[pos]; - pos++; - } - } -} - -// Checks if we're at a particular directive and if so, consumes it. -// Returns whether the directive was found. -bool AsmFile::CheckForDirective(std::string name) -{ - long i; - long length = static_cast<long>(name.length()); - - for (i = 0; i < length && m_pos + i < m_size; i++) - if (name[i] != m_buffer[m_pos + i]) - return false; - - if (i < length) - return false; - - m_pos += length; - - return true; -} - -// Checks if we're at a known directive and if so, consumes it. -// Returns which directive was found. -Directive AsmFile::GetDirective() -{ - SkipWhitespace(); - - if (CheckForDirective(".include")) - return Directive::Include; - else if (CheckForDirective(".string")) - return Directive::String; - else if (CheckForDirective(".braille")) - return Directive::Braille; - else - return Directive::Unknown; -} - -// Checks if we're at label that ends with '::'. -// Returns the name if so and an empty string if not. -std::string AsmFile::GetGlobalLabel() -{ - long start = m_pos; - long pos = m_pos; - - if (IsIdentifierStartingChar(m_buffer[pos])) - { - pos++; - - while (IsIdentifierChar(m_buffer[pos])) - pos++; - } - - if (m_buffer[pos] == ':' && m_buffer[pos + 1] == ':') - { - m_pos = pos + 2; - ExpectEmptyRestOfLine(); - return std::string(&m_buffer[start], pos - start); - } - - return std::string(); -} - -// Skips tabs and spaces. -void AsmFile::SkipWhitespace() -{ - while (m_buffer[m_pos] == '\t' || m_buffer[m_pos] == ' ') - m_pos++; -} - -// Reads include path. -std::string AsmFile::ReadPath() -{ - SkipWhitespace(); - - if (m_buffer[m_pos] != '"') - RaiseError("expected file path"); - - m_pos++; - - int length = 0; - long startPos = m_pos; - - while (m_buffer[m_pos] != '"') - { - unsigned char c = m_buffer[m_pos++]; - - if (c == 0) - { - if (m_pos >= m_size) - RaiseError("unexpected EOF in include string"); - else - RaiseError("unexpected null character in include string"); - } - - if (!IsAsciiPrintable(c)) - RaiseError("unexpected character '\\x%02X' in include string", c); - - // Don't bother allowing any escape sequences. - if (c == '\\') - { - c = m_buffer[m_pos]; - RaiseError("unexpected escape '\\%c' in include string", c); - } - - length++; - - if (length > kMaxPath) - RaiseError("path is too long"); - } - - m_pos++; // Go past the right quote. - - ExpectEmptyRestOfLine(); - - return std::string(&m_buffer[startPos], length); -} - -// Reads a charmap string. -int AsmFile::ReadString(unsigned char* s) -{ - SkipWhitespace(); - - int length; - StringParser stringParser(m_buffer, m_size); - - try - { - m_pos += stringParser.ParseString(m_pos, s, length); - } - catch (std::runtime_error& e) - { - RaiseError(e.what()); - } - - SkipWhitespace(); - - if (ConsumeComma()) - { - SkipWhitespace(); - int padLength = ReadPadLength(); - - while (length < padLength) - { - s[length++] = 0; - } - } - - ExpectEmptyRestOfLine(); - - return length; -} - -int AsmFile::ReadBraille(unsigned char* s) -{ - static std::map<char, unsigned char> encoding = - { - { 'A', 0x01 }, - { 'B', 0x05 }, - { 'C', 0x03 }, - { 'D', 0x0B }, - { 'E', 0x09 }, - { 'F', 0x07 }, - { 'G', 0x0F }, - { 'H', 0x0D }, - { 'I', 0x06 }, - { 'J', 0x0E }, - { 'K', 0x11 }, - { 'L', 0x15 }, - { 'M', 0x13 }, - { 'N', 0x1B }, - { 'O', 0x19 }, - { 'P', 0x17 }, - { 'Q', 0x1F }, - { 'R', 0x1D }, - { 'S', 0x16 }, - { 'T', 0x1E }, - { 'U', 0x31 }, - { 'V', 0x35 }, - { 'W', 0x2E }, - { 'X', 0x33 }, - { 'Y', 0x3B }, - { 'Z', 0x39 }, - { ' ', 0x00 }, - { ',', 0x04 }, - { '.', 0x2C }, - { '$', 0xFF }, - }; - - SkipWhitespace(); - - int length = 0; - - if (m_buffer[m_pos] != '"') - RaiseError("expected braille string literal"); - - m_pos++; - - while (m_buffer[m_pos] != '"') - { - if (length == kMaxStringLength) - RaiseError("mapped string longer than %d bytes", kMaxStringLength); - - if (m_buffer[m_pos] == '\\' && m_buffer[m_pos + 1] == 'n') - { - s[length++] = 0xFE; - m_pos += 2; - } - else - { - char c = m_buffer[m_pos]; - - if (encoding.count(c) == 0) - { - if (IsAsciiPrintable(c)) - RaiseError("character '%c' not valid in braille string", m_buffer[m_pos]); - else - RaiseError("character '\\x%02X' not valid in braille string", m_buffer[m_pos]); - } - - s[length++] = encoding[c]; - m_pos++; - } - } - - m_pos++; // Go past the right quote. - - ExpectEmptyRestOfLine(); - - return length; -} - -// If we're at a comma, consumes it. -// Returns whether a comma was found. -bool AsmFile::ConsumeComma() -{ - if (m_buffer[m_pos] == ',') - { - m_pos++; - return true; - } - - return false; -} - -// Converts digit character to numerical value. -static int ConvertDigit(char c, int radix) -{ - int digit; - - if (c >= '0' && c <= '9') - digit = c - '0'; - else if (c >= 'A' && c <= 'F') - digit = 10 + c - 'A'; - else if (c >= 'a' && c <= 'f') - digit = 10 + c - 'a'; - else - return -1; - - return (digit < radix) ? digit : -1; -} - -// Reads an integer. If the integer is greater than maxValue, it returns -1. -int AsmFile::ReadPadLength() -{ - if (!IsAsciiDigit(m_buffer[m_pos])) - RaiseError("expected integer"); - - int radix = 10; - - if (m_buffer[m_pos] == '0' && m_buffer[m_pos + 1] == 'x') - { - radix = 16; - m_pos += 2; - } - - unsigned n = 0; - int digit; - - while ((digit = ConvertDigit(m_buffer[m_pos], radix)) != -1) - { - n = n * radix + digit; - - if (n > kMaxStringLength) - RaiseError("pad length greater than maximum length (%d)", kMaxStringLength); - - m_pos++; - } - - return n; -} - -// Outputs the current line and moves to the next one. -void AsmFile::OutputLine() -{ - while (m_buffer[m_pos] != '\n' && m_buffer[m_pos] != 0) - m_pos++; - - if (m_buffer[m_pos] == 0) - { - if (m_pos >= m_size) - { - RaiseWarning("file doesn't end with newline"); - puts(&m_buffer[m_lineStart]); - } - else - { - RaiseError("unexpected null character"); - } - } - else - { - m_buffer[m_pos] = 0; - puts(&m_buffer[m_lineStart]); - m_buffer[m_pos] = '\n'; - m_pos++; - m_lineStart = m_pos; - m_lineNum++; - } -} - -// Asserts that the rest of the line is empty and moves to the next one. -void AsmFile::ExpectEmptyRestOfLine() -{ - SkipWhitespace(); - - if (m_buffer[m_pos] == 0) - { - if (m_pos >= m_size) - RaiseWarning("file doesn't end with newline"); - else - RaiseError("unexpected null character"); - } - else if (m_buffer[m_pos] == '\n') - { - m_pos++; - m_lineStart = m_pos; - m_lineNum++; - } - else if (m_buffer[m_pos] == '\r' && m_buffer[m_pos + 1] == '\n') - { - m_pos += 2; - m_lineStart = m_pos; - m_lineNum++; - } - else - { - RaiseError("junk at end of line"); - } -} - -// Checks if we're at the end of the file. -bool AsmFile::IsAtEnd() -{ - return (m_pos >= m_size); -} - -// Output the current location to set gas's logical file and line numbers. -void AsmFile::OutputLocation() -{ - std::printf("# %ld \"%s\"\n", m_lineNum, m_filename.c_str()); -} - -// Reports a diagnostic message. -void AsmFile::ReportDiagnostic(const char* type, const char* format, std::va_list args) -{ - const int bufferSize = 1024; - char buffer[bufferSize]; - std::vsnprintf(buffer, bufferSize, format, args); - std::fprintf(stderr, "%s:%ld: %s: %s\n", m_filename.c_str(), m_lineNum, type, buffer); -} - -#define DO_REPORT(type) \ -do \ -{ \ - std::va_list args; \ - va_start(args, format); \ - ReportDiagnostic(type, format, args); \ - va_end(args); \ -} while (0) - -// Reports an error diagnostic and terminates the program. -void AsmFile::RaiseError(const char* format, ...) -{ - DO_REPORT("error"); - std::exit(1); -} - -// Reports a warning diagnostic. -void AsmFile::RaiseWarning(const char* format, ...) -{ - DO_REPORT("warning"); -} +// Copyright(c) 2016 YamaArashi
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#include <cstdio>
+#include <cstdarg>
+#include <stdexcept>
+#include "preproc.h"
+#include "asm_file.h"
+#include "char_util.h"
+#include "utf8.h"
+#include "string_parser.h"
+
+AsmFile::AsmFile(std::string filename) : m_filename(filename)
+{
+ FILE *fp = std::fopen(filename.c_str(), "rb");
+
+ if (fp == NULL)
+ FATAL_ERROR("Failed to open \"%s\" for reading.\n", filename.c_str());
+
+ std::fseek(fp, 0, SEEK_END);
+
+ m_size = std::ftell(fp);
+
+ if (m_size < 0)
+ FATAL_ERROR("File size of \"%s\" is less than zero.\n", filename.c_str());
+
+ m_buffer = new char[m_size + 1];
+
+ std::rewind(fp);
+
+ if (std::fread(m_buffer, m_size, 1, fp) != 1)
+ FATAL_ERROR("Failed to read \"%s\".\n", filename.c_str());
+
+ m_buffer[m_size] = 0;
+
+ std::fclose(fp);
+
+ m_pos = 0;
+ m_lineNum = 1;
+ m_lineStart = 0;
+
+ RemoveComments();
+}
+
+AsmFile::AsmFile(AsmFile&& other) : m_filename(std::move(other.m_filename))
+{
+ m_buffer = other.m_buffer;
+ m_pos = other.m_pos;
+ m_size = other.m_size;
+ m_lineNum = other.m_lineNum;
+ m_lineStart = other.m_lineStart;
+
+ other.m_buffer = nullptr;
+}
+
+AsmFile::~AsmFile()
+{
+ delete[] m_buffer;
+}
+
+// Removes comments to simplify further processing.
+// It stops upon encountering a null character,
+// which may or may not be the end of file marker.
+// If it's not, the error will be caught later.
+void AsmFile::RemoveComments()
+{
+ long pos = 0;
+ char stringChar = 0;
+
+ for (;;)
+ {
+ if (m_buffer[pos] == 0)
+ return;
+
+ if (stringChar != 0)
+ {
+ if (m_buffer[pos] == '\\' && m_buffer[pos + 1] == stringChar)
+ {
+ pos += 2;
+ }
+ else
+ {
+ if (m_buffer[pos] == stringChar)
+ stringChar = 0;
+ pos++;
+ }
+ }
+ else if (m_buffer[pos] == '@' && (pos == 0 || m_buffer[pos - 1] != '\\'))
+ {
+ while (m_buffer[pos] != '\n' && m_buffer[pos] != 0)
+ m_buffer[pos++] = ' ';
+ }
+ else if (m_buffer[pos] == '/' && m_buffer[pos + 1] == '*')
+ {
+ m_buffer[pos++] = ' ';
+ m_buffer[pos++] = ' ';
+
+ for (;;)
+ {
+ if (m_buffer[pos] == 0)
+ return;
+
+ if (m_buffer[pos] == '*' && m_buffer[pos + 1] == '/')
+ {
+ m_buffer[pos++] = ' ';
+ m_buffer[pos++] = ' ';
+ break;
+ }
+ else
+ {
+ if (m_buffer[pos] != '\n')
+ m_buffer[pos] = ' ';
+ pos++;
+ }
+ }
+ }
+ else
+ {
+ if (m_buffer[pos] == '"' || m_buffer[pos] == '\'')
+ stringChar = m_buffer[pos];
+ pos++;
+ }
+ }
+}
+
+// Checks if we're at a particular directive and if so, consumes it.
+// Returns whether the directive was found.
+bool AsmFile::CheckForDirective(std::string name)
+{
+ long i;
+ long length = static_cast<long>(name.length());
+
+ for (i = 0; i < length && m_pos + i < m_size; i++)
+ if (name[i] != m_buffer[m_pos + i])
+ return false;
+
+ if (i < length)
+ return false;
+
+ m_pos += length;
+
+ return true;
+}
+
+// Checks if we're at a known directive and if so, consumes it.
+// Returns which directive was found.
+Directive AsmFile::GetDirective()
+{
+ SkipWhitespace();
+
+ if (CheckForDirective(".include"))
+ return Directive::Include;
+ else if (CheckForDirective(".string"))
+ return Directive::String;
+ else if (CheckForDirective(".braille"))
+ return Directive::Braille;
+ else
+ return Directive::Unknown;
+}
+
+// Checks if we're at label that ends with '::'.
+// Returns the name if so and an empty string if not.
+std::string AsmFile::GetGlobalLabel()
+{
+ long start = m_pos;
+ long pos = m_pos;
+
+ if (IsIdentifierStartingChar(m_buffer[pos]))
+ {
+ pos++;
+
+ while (IsIdentifierChar(m_buffer[pos]))
+ pos++;
+ }
+
+ if (m_buffer[pos] == ':' && m_buffer[pos + 1] == ':')
+ {
+ m_pos = pos + 2;
+ ExpectEmptyRestOfLine();
+ return std::string(&m_buffer[start], pos - start);
+ }
+
+ return std::string();
+}
+
+// Skips tabs and spaces.
+void AsmFile::SkipWhitespace()
+{
+ while (m_buffer[m_pos] == '\t' || m_buffer[m_pos] == ' ')
+ m_pos++;
+}
+
+// Reads include path.
+std::string AsmFile::ReadPath()
+{
+ SkipWhitespace();
+
+ if (m_buffer[m_pos] != '"')
+ RaiseError("expected file path");
+
+ m_pos++;
+
+ int length = 0;
+ long startPos = m_pos;
+
+ while (m_buffer[m_pos] != '"')
+ {
+ unsigned char c = m_buffer[m_pos++];
+
+ if (c == 0)
+ {
+ if (m_pos >= m_size)
+ RaiseError("unexpected EOF in include string");
+ else
+ RaiseError("unexpected null character in include string");
+ }
+
+ if (!IsAsciiPrintable(c))
+ RaiseError("unexpected character '\\x%02X' in include string", c);
+
+ // Don't bother allowing any escape sequences.
+ if (c == '\\')
+ {
+ c = m_buffer[m_pos];
+ RaiseError("unexpected escape '\\%c' in include string", c);
+ }
+
+ length++;
+
+ if (length > kMaxPath)
+ RaiseError("path is too long");
+ }
+
+ m_pos++; // Go past the right quote.
+
+ ExpectEmptyRestOfLine();
+
+ return std::string(&m_buffer[startPos], length);
+}
+
+// Reads a charmap string.
+int AsmFile::ReadString(unsigned char* s)
+{
+ SkipWhitespace();
+
+ int length;
+ StringParser stringParser(m_buffer, m_size);
+
+ try
+ {
+ m_pos += stringParser.ParseString(m_pos, s, length);
+ }
+ catch (std::runtime_error& e)
+ {
+ RaiseError(e.what());
+ }
+
+ SkipWhitespace();
+
+ if (ConsumeComma())
+ {
+ SkipWhitespace();
+ int padLength = ReadPadLength();
+
+ while (length < padLength)
+ {
+ s[length++] = 0;
+ }
+ }
+
+ ExpectEmptyRestOfLine();
+
+ return length;
+}
+
+int AsmFile::ReadBraille(unsigned char* s)
+{
+ static std::map<char, unsigned char> encoding =
+ {
+ { 'A', 0x01 },
+ { 'B', 0x05 },
+ { 'C', 0x03 },
+ { 'D', 0x0B },
+ { 'E', 0x09 },
+ { 'F', 0x07 },
+ { 'G', 0x0F },
+ { 'H', 0x0D },
+ { 'I', 0x06 },
+ { 'J', 0x0E },
+ { 'K', 0x11 },
+ { 'L', 0x15 },
+ { 'M', 0x13 },
+ { 'N', 0x1B },
+ { 'O', 0x19 },
+ { 'P', 0x17 },
+ { 'Q', 0x1F },
+ { 'R', 0x1D },
+ { 'S', 0x16 },
+ { 'T', 0x1E },
+ { 'U', 0x31 },
+ { 'V', 0x35 },
+ { 'W', 0x2E },
+ { 'X', 0x33 },
+ { 'Y', 0x3B },
+ { 'Z', 0x39 },
+ { ' ', 0x00 },
+ { ',', 0x04 },
+ { '.', 0x2C },
+ { '$', 0xFF },
+ };
+
+ SkipWhitespace();
+
+ int length = 0;
+
+ if (m_buffer[m_pos] != '"')
+ RaiseError("expected braille string literal");
+
+ m_pos++;
+
+ while (m_buffer[m_pos] != '"')
+ {
+ if (length == kMaxStringLength)
+ RaiseError("mapped string longer than %d bytes", kMaxStringLength);
+
+ if (m_buffer[m_pos] == '\\' && m_buffer[m_pos + 1] == 'n')
+ {
+ s[length++] = 0xFE;
+ m_pos += 2;
+ }
+ else
+ {
+ char c = m_buffer[m_pos];
+
+ if (encoding.count(c) == 0)
+ {
+ if (IsAsciiPrintable(c))
+ RaiseError("character '%c' not valid in braille string", m_buffer[m_pos]);
+ else
+ RaiseError("character '\\x%02X' not valid in braille string", m_buffer[m_pos]);
+ }
+
+ s[length++] = encoding[c];
+ m_pos++;
+ }
+ }
+
+ m_pos++; // Go past the right quote.
+
+ ExpectEmptyRestOfLine();
+
+ return length;
+}
+
+// If we're at a comma, consumes it.
+// Returns whether a comma was found.
+bool AsmFile::ConsumeComma()
+{
+ if (m_buffer[m_pos] == ',')
+ {
+ m_pos++;
+ return true;
+ }
+
+ return false;
+}
+
+// Converts digit character to numerical value.
+static int ConvertDigit(char c, int radix)
+{
+ int digit;
+
+ if (c >= '0' && c <= '9')
+ digit = c - '0';
+ else if (c >= 'A' && c <= 'F')
+ digit = 10 + c - 'A';
+ else if (c >= 'a' && c <= 'f')
+ digit = 10 + c - 'a';
+ else
+ return -1;
+
+ return (digit < radix) ? digit : -1;
+}
+
+// Reads an integer. If the integer is greater than maxValue, it returns -1.
+int AsmFile::ReadPadLength()
+{
+ if (!IsAsciiDigit(m_buffer[m_pos]))
+ RaiseError("expected integer");
+
+ int radix = 10;
+
+ if (m_buffer[m_pos] == '0' && m_buffer[m_pos + 1] == 'x')
+ {
+ radix = 16;
+ m_pos += 2;
+ }
+
+ unsigned n = 0;
+ int digit;
+
+ while ((digit = ConvertDigit(m_buffer[m_pos], radix)) != -1)
+ {
+ n = n * radix + digit;
+
+ if (n > kMaxStringLength)
+ RaiseError("pad length greater than maximum length (%d)", kMaxStringLength);
+
+ m_pos++;
+ }
+
+ return n;
+}
+
+// Outputs the current line and moves to the next one.
+void AsmFile::OutputLine()
+{
+ while (m_buffer[m_pos] != '\n' && m_buffer[m_pos] != 0)
+ m_pos++;
+
+ if (m_buffer[m_pos] == 0)
+ {
+ if (m_pos >= m_size)
+ {
+ RaiseWarning("file doesn't end with newline");
+ puts(&m_buffer[m_lineStart]);
+ }
+ else
+ {
+ RaiseError("unexpected null character");
+ }
+ }
+ else
+ {
+ m_buffer[m_pos] = 0;
+ puts(&m_buffer[m_lineStart]);
+ m_buffer[m_pos] = '\n';
+ m_pos++;
+ m_lineStart = m_pos;
+ m_lineNum++;
+ }
+}
+
+// Asserts that the rest of the line is empty and moves to the next one.
+void AsmFile::ExpectEmptyRestOfLine()
+{
+ SkipWhitespace();
+
+ if (m_buffer[m_pos] == 0)
+ {
+ if (m_pos >= m_size)
+ RaiseWarning("file doesn't end with newline");
+ else
+ RaiseError("unexpected null character");
+ }
+ else if (m_buffer[m_pos] == '\n')
+ {
+ m_pos++;
+ m_lineStart = m_pos;
+ m_lineNum++;
+ }
+ else if (m_buffer[m_pos] == '\r' && m_buffer[m_pos + 1] == '\n')
+ {
+ m_pos += 2;
+ m_lineStart = m_pos;
+ m_lineNum++;
+ }
+ else
+ {
+ RaiseError("junk at end of line");
+ }
+}
+
+// Checks if we're at the end of the file.
+bool AsmFile::IsAtEnd()
+{
+ return (m_pos >= m_size);
+}
+
+// Output the current location to set gas's logical file and line numbers.
+void AsmFile::OutputLocation()
+{
+ std::printf("# %ld \"%s\"\n", m_lineNum, m_filename.c_str());
+}
+
+// Reports a diagnostic message.
+void AsmFile::ReportDiagnostic(const char* type, const char* format, std::va_list args)
+{
+ const int bufferSize = 1024;
+ char buffer[bufferSize];
+ std::vsnprintf(buffer, bufferSize, format, args);
+ std::fprintf(stderr, "%s:%ld: %s: %s\n", m_filename.c_str(), m_lineNum, type, buffer);
+}
+
+#define DO_REPORT(type) \
+do \
+{ \
+ std::va_list args; \
+ va_start(args, format); \
+ ReportDiagnostic(type, format, args); \
+ va_end(args); \
+} while (0)
+
+// Reports an error diagnostic and terminates the program.
+void AsmFile::RaiseError(const char* format, ...)
+{
+ DO_REPORT("error");
+ std::exit(1);
+}
+
+// Reports a warning diagnostic.
+void AsmFile::RaiseWarning(const char* format, ...)
+{
+ DO_REPORT("warning");
+}
diff --git a/tools/preproc/c_file.cpp b/tools/preproc/c_file.cpp index 59426ef..6213a8a 100644 --- a/tools/preproc/c_file.cpp +++ b/tools/preproc/c_file.cpp @@ -1,430 +1,430 @@ -// Copyright(c) 2016 YamaArashi -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <cstdio> -#include <cstdarg> -#include <stdexcept> -#include <string> -#include <memory> -#include "preproc.h" -#include "c_file.h" -#include "char_util.h" -#include "utf8.h" -#include "string_parser.h" - -CFile::CFile(std::string filename) : m_filename(filename) -{ - FILE *fp = std::fopen(filename.c_str(), "rb"); - - if (fp == NULL) - FATAL_ERROR("Failed to open \"%s\" for reading.\n", filename.c_str()); - - std::fseek(fp, 0, SEEK_END); - - m_size = std::ftell(fp); - - if (m_size < 0) - FATAL_ERROR("File size of \"%s\" is less than zero.\n", filename.c_str()); - - m_buffer = new char[m_size + 1]; - - std::rewind(fp); - - if (std::fread(m_buffer, m_size, 1, fp) != 1) - FATAL_ERROR("Failed to read \"%s\".\n", filename.c_str()); - - m_buffer[m_size] = 0; - - std::fclose(fp); - - m_pos = 0; - m_lineNum = 1; -} - -CFile::CFile(CFile&& other) : m_filename(std::move(other.m_filename)) -{ - m_buffer = other.m_buffer; - m_pos = other.m_pos; - m_size = other.m_size; - m_lineNum = other.m_lineNum; - - other.m_buffer = nullptr; -} - -CFile::~CFile() -{ - delete[] m_buffer; -} - -void CFile::Preproc() -{ - char stringChar = 0; - - while (m_pos < m_size) - { - if (stringChar) - { - if (m_buffer[m_pos] == stringChar) - { - std::putchar(stringChar); - m_pos++; - stringChar = 0; - } - else if (m_buffer[m_pos] == '\\' && m_buffer[m_pos + 1] == stringChar) - { - std::putchar('\\'); - std::putchar(stringChar); - m_pos += 2; - } - else - { - if (m_buffer[m_pos] == '\n') - m_lineNum++; - std::putchar(m_buffer[m_pos]); - m_pos++; - } - } - else - { - TryConvertString(); - TryConvertIncbin(); - - if (m_pos >= m_size) - break; - - char c = m_buffer[m_pos++]; - - std::putchar(c); - - if (c == '\n') - m_lineNum++; - else if (c == '"') - stringChar = '"'; - else if (c == '\'') - stringChar = '\''; - } - } -} - -bool CFile::ConsumeHorizontalWhitespace() -{ - if (m_buffer[m_pos] == '\t' || m_buffer[m_pos] == ' ') - { - m_pos++; - return true; - } - - return false; -} - -bool CFile::ConsumeNewline() -{ - if (m_buffer[m_pos] == '\r' && m_buffer[m_pos + 1] == '\n') - { - m_pos += 2; - m_lineNum++; - std::putchar('\n'); - return true; - } - - if (m_buffer[m_pos] == '\n') - { - m_pos++; - m_lineNum++; - std::putchar('\n'); - return true; - } - - return false; -} - -void CFile::SkipWhitespace() -{ - while (ConsumeHorizontalWhitespace() || ConsumeNewline()) - ; -} - -void CFile::TryConvertString() -{ - long oldPos = m_pos; - long oldLineNum = m_lineNum; - bool noTerminator = false; - - if (m_buffer[m_pos] != '_' || (m_pos > 0 && IsIdentifierChar(m_buffer[m_pos - 1]))) - return; - - m_pos++; - - if (m_buffer[m_pos] == '_') - { - noTerminator = true; - m_pos++; - } - - SkipWhitespace(); - - if (m_buffer[m_pos] != '(') - { - m_pos = oldPos; - m_lineNum = oldLineNum; - return; - } - - m_pos++; - - SkipWhitespace(); - - std::printf("{ "); - - while (1) - { - SkipWhitespace(); - - if (m_buffer[m_pos] == '"') - { - unsigned char s[kMaxStringLength]; - int length; - StringParser stringParser(m_buffer, m_size); - - try - { - m_pos += stringParser.ParseString(m_pos, s, length); - } - catch (std::runtime_error& e) - { - RaiseError(e.what()); - } - - for (int i = 0; i < length; i++) - printf("0x%02X, ", s[i]); - } - else if (m_buffer[m_pos] == ')') - { - m_pos++; - break; - } - else - { - if (m_pos >= m_size) - RaiseError("unexpected EOF"); - if (IsAsciiPrintable(m_buffer[m_pos])) - RaiseError("unexpected character '%c'", m_buffer[m_pos]); - else - RaiseError("unexpected character '\\x%02X'", m_buffer[m_pos]); - } - } - - if (noTerminator) - std::printf(" }"); - else - std::printf("0x00 }"); -} - -bool CFile::CheckIdentifier(const std::string& ident) -{ - unsigned int i; - - for (i = 0; i < ident.length() && m_pos + i < (unsigned)m_size; i++) - if (ident[i] != m_buffer[m_pos + i]) - return false; - - return (i == ident.length()); -} - -std::unique_ptr<unsigned char[]> CFile::ReadWholeFile(const std::string& path, int& size) -{ - FILE* fp = std::fopen(path.c_str(), "rb"); - - if (fp == nullptr) - RaiseError("Failed to open \"%s\" for reading.\n", path.c_str()); - - std::fseek(fp, 0, SEEK_END); - - size = std::ftell(fp); - - std::unique_ptr<unsigned char[]> buffer = std::unique_ptr<unsigned char[]>(new unsigned char[size]); - - std::rewind(fp); - - if (std::fread(buffer.get(), size, 1, fp) != 1) - RaiseError("Failed to read \"%s\".\n", path.c_str()); - - std::fclose(fp); - - return buffer; -} - -int ExtractData(const std::unique_ptr<unsigned char[]>& buffer, int offset, int size) -{ - switch (size) - { - case 1: - return buffer[offset]; - case 2: - return (buffer[offset + 1] << 8) - | buffer[offset]; - case 4: - return (buffer[offset + 3] << 24) - | (buffer[offset + 2] << 16) - | (buffer[offset + 1] << 8) - | buffer[offset]; - default: - FATAL_ERROR("Invalid size passed to ExtractData.\n"); - } -} - -void CFile::TryConvertIncbin() -{ - std::string idents[6] = { "INCBIN_S8", "INCBIN_U8", "INCBIN_S16", "INCBIN_U16", "INCBIN_S32", "INCBIN_U32" }; - int incbinType = -1; - - for (int i = 0; i < 6; i++) - { - if (CheckIdentifier(idents[i])) - { - incbinType = i; - break; - } - } - - if (incbinType == -1) - return; - - int size = 1 << (incbinType / 2); - bool isSigned = ((incbinType % 2) == 0); - - long oldPos = m_pos; - long oldLineNum = m_lineNum; - - m_pos += idents[incbinType].length(); - - SkipWhitespace(); - - if (m_buffer[m_pos] != '(') - { - m_pos = oldPos; - m_lineNum = oldLineNum; - return; - } - - m_pos++; - - std::printf("{"); - - while (true) - { - SkipWhitespace(); - - if (m_buffer[m_pos] != '"') - RaiseError("expected double quote"); - - m_pos++; - - int startPos = m_pos; - - while (m_buffer[m_pos] != '"') - { - if (m_buffer[m_pos] == 0) - { - if (m_pos >= m_size) - RaiseError("unexpected EOF in path string"); - else - RaiseError("unexpected null character in path string"); - } - - if (m_buffer[m_pos] == '\r' || m_buffer[m_pos] == '\n') - RaiseError("unexpected end of line character in path string"); - - if (m_buffer[m_pos] == '\\') - RaiseError("unexpected escape in path string"); - - m_pos++; - } - - std::string path(&m_buffer[startPos], m_pos - startPos); - - m_pos++; - - int fileSize; - std::unique_ptr<unsigned char[]> buffer = ReadWholeFile(path, fileSize); - - if ((fileSize % size) != 0) - RaiseError("Size %d doesn't evenly divide file size %d.\n", size, fileSize); - - int count = fileSize / size; - int offset = 0; - - for (int i = 0; i < count; i++) - { - int data = ExtractData(buffer, offset, size); - offset += size; - - if (isSigned) - std::printf("%d,", data); - else - std::printf("%uu,", data); - } - - SkipWhitespace(); - - if (m_buffer[m_pos] != ',') - break; - - m_pos++; - } - - if (m_buffer[m_pos] != ')') - RaiseError("expected ')'"); - - m_pos++; - - std::printf("}"); -} - -// Reports a diagnostic message. -void CFile::ReportDiagnostic(const char* type, const char* format, std::va_list args) -{ - const int bufferSize = 1024; - char buffer[bufferSize]; - std::vsnprintf(buffer, bufferSize, format, args); - std::fprintf(stderr, "%s:%ld: %s: %s\n", m_filename.c_str(), m_lineNum, type, buffer); -} - -#define DO_REPORT(type) \ -do \ -{ \ - std::va_list args; \ - va_start(args, format); \ - ReportDiagnostic(type, format, args); \ - va_end(args); \ -} while (0) - -// Reports an error diagnostic and terminates the program. -void CFile::RaiseError(const char* format, ...) -{ - DO_REPORT("error"); - std::exit(1); -} - -// Reports a warning diagnostic. -void CFile::RaiseWarning(const char* format, ...) -{ - DO_REPORT("warning"); -} +// Copyright(c) 2016 YamaArashi
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#include <cstdio>
+#include <cstdarg>
+#include <stdexcept>
+#include <string>
+#include <memory>
+#include "preproc.h"
+#include "c_file.h"
+#include "char_util.h"
+#include "utf8.h"
+#include "string_parser.h"
+
+CFile::CFile(std::string filename) : m_filename(filename)
+{
+ FILE *fp = std::fopen(filename.c_str(), "rb");
+
+ if (fp == NULL)
+ FATAL_ERROR("Failed to open \"%s\" for reading.\n", filename.c_str());
+
+ std::fseek(fp, 0, SEEK_END);
+
+ m_size = std::ftell(fp);
+
+ if (m_size < 0)
+ FATAL_ERROR("File size of \"%s\" is less than zero.\n", filename.c_str());
+
+ m_buffer = new char[m_size + 1];
+
+ std::rewind(fp);
+
+ if (std::fread(m_buffer, m_size, 1, fp) != 1)
+ FATAL_ERROR("Failed to read \"%s\".\n", filename.c_str());
+
+ m_buffer[m_size] = 0;
+
+ std::fclose(fp);
+
+ m_pos = 0;
+ m_lineNum = 1;
+}
+
+CFile::CFile(CFile&& other) : m_filename(std::move(other.m_filename))
+{
+ m_buffer = other.m_buffer;
+ m_pos = other.m_pos;
+ m_size = other.m_size;
+ m_lineNum = other.m_lineNum;
+
+ other.m_buffer = nullptr;
+}
+
+CFile::~CFile()
+{
+ delete[] m_buffer;
+}
+
+void CFile::Preproc()
+{
+ char stringChar = 0;
+
+ while (m_pos < m_size)
+ {
+ if (stringChar)
+ {
+ if (m_buffer[m_pos] == stringChar)
+ {
+ std::putchar(stringChar);
+ m_pos++;
+ stringChar = 0;
+ }
+ else if (m_buffer[m_pos] == '\\' && m_buffer[m_pos + 1] == stringChar)
+ {
+ std::putchar('\\');
+ std::putchar(stringChar);
+ m_pos += 2;
+ }
+ else
+ {
+ if (m_buffer[m_pos] == '\n')
+ m_lineNum++;
+ std::putchar(m_buffer[m_pos]);
+ m_pos++;
+ }
+ }
+ else
+ {
+ TryConvertString();
+ TryConvertIncbin();
+
+ if (m_pos >= m_size)
+ break;
+
+ char c = m_buffer[m_pos++];
+
+ std::putchar(c);
+
+ if (c == '\n')
+ m_lineNum++;
+ else if (c == '"')
+ stringChar = '"';
+ else if (c == '\'')
+ stringChar = '\'';
+ }
+ }
+}
+
+bool CFile::ConsumeHorizontalWhitespace()
+{
+ if (m_buffer[m_pos] == '\t' || m_buffer[m_pos] == ' ')
+ {
+ m_pos++;
+ return true;
+ }
+
+ return false;
+}
+
+bool CFile::ConsumeNewline()
+{
+ if (m_buffer[m_pos] == '\r' && m_buffer[m_pos + 1] == '\n')
+ {
+ m_pos += 2;
+ m_lineNum++;
+ std::putchar('\n');
+ return true;
+ }
+
+ if (m_buffer[m_pos] == '\n')
+ {
+ m_pos++;
+ m_lineNum++;
+ std::putchar('\n');
+ return true;
+ }
+
+ return false;
+}
+
+void CFile::SkipWhitespace()
+{
+ while (ConsumeHorizontalWhitespace() || ConsumeNewline())
+ ;
+}
+
+void CFile::TryConvertString()
+{
+ long oldPos = m_pos;
+ long oldLineNum = m_lineNum;
+ bool noTerminator = false;
+
+ if (m_buffer[m_pos] != '_' || (m_pos > 0 && IsIdentifierChar(m_buffer[m_pos - 1])))
+ return;
+
+ m_pos++;
+
+ if (m_buffer[m_pos] == '_')
+ {
+ noTerminator = true;
+ m_pos++;
+ }
+
+ SkipWhitespace();
+
+ if (m_buffer[m_pos] != '(')
+ {
+ m_pos = oldPos;
+ m_lineNum = oldLineNum;
+ return;
+ }
+
+ m_pos++;
+
+ SkipWhitespace();
+
+ std::printf("{ ");
+
+ while (1)
+ {
+ SkipWhitespace();
+
+ if (m_buffer[m_pos] == '"')
+ {
+ unsigned char s[kMaxStringLength];
+ int length;
+ StringParser stringParser(m_buffer, m_size);
+
+ try
+ {
+ m_pos += stringParser.ParseString(m_pos, s, length);
+ }
+ catch (std::runtime_error& e)
+ {
+ RaiseError(e.what());
+ }
+
+ for (int i = 0; i < length; i++)
+ printf("0x%02X, ", s[i]);
+ }
+ else if (m_buffer[m_pos] == ')')
+ {
+ m_pos++;
+ break;
+ }
+ else
+ {
+ if (m_pos >= m_size)
+ RaiseError("unexpected EOF");
+ if (IsAsciiPrintable(m_buffer[m_pos]))
+ RaiseError("unexpected character '%c'", m_buffer[m_pos]);
+ else
+ RaiseError("unexpected character '\\x%02X'", m_buffer[m_pos]);
+ }
+ }
+
+ if (noTerminator)
+ std::printf(" }");
+ else
+ std::printf("0x00 }");
+}
+
+bool CFile::CheckIdentifier(const std::string& ident)
+{
+ unsigned int i;
+
+ for (i = 0; i < ident.length() && m_pos + i < (unsigned)m_size; i++)
+ if (ident[i] != m_buffer[m_pos + i])
+ return false;
+
+ return (i == ident.length());
+}
+
+std::unique_ptr<unsigned char[]> CFile::ReadWholeFile(const std::string& path, int& size)
+{
+ FILE* fp = std::fopen(path.c_str(), "rb");
+
+ if (fp == nullptr)
+ RaiseError("Failed to open \"%s\" for reading.\n", path.c_str());
+
+ std::fseek(fp, 0, SEEK_END);
+
+ size = std::ftell(fp);
+
+ std::unique_ptr<unsigned char[]> buffer = std::unique_ptr<unsigned char[]>(new unsigned char[size]);
+
+ std::rewind(fp);
+
+ if (std::fread(buffer.get(), size, 1, fp) != 1)
+ RaiseError("Failed to read \"%s\".\n", path.c_str());
+
+ std::fclose(fp);
+
+ return buffer;
+}
+
+int ExtractData(const std::unique_ptr<unsigned char[]>& buffer, int offset, int size)
+{
+ switch (size)
+ {
+ case 1:
+ return buffer[offset];
+ case 2:
+ return (buffer[offset + 1] << 8)
+ | buffer[offset];
+ case 4:
+ return (buffer[offset + 3] << 24)
+ | (buffer[offset + 2] << 16)
+ | (buffer[offset + 1] << 8)
+ | buffer[offset];
+ default:
+ FATAL_ERROR("Invalid size passed to ExtractData.\n");
+ }
+}
+
+void CFile::TryConvertIncbin()
+{
+ std::string idents[6] = { "INCBIN_S8", "INCBIN_U8", "INCBIN_S16", "INCBIN_U16", "INCBIN_S32", "INCBIN_U32" };
+ int incbinType = -1;
+
+ for (int i = 0; i < 6; i++)
+ {
+ if (CheckIdentifier(idents[i]))
+ {
+ incbinType = i;
+ break;
+ }
+ }
+
+ if (incbinType == -1)
+ return;
+
+ int size = 1 << (incbinType / 2);
+ bool isSigned = ((incbinType % 2) == 0);
+
+ long oldPos = m_pos;
+ long oldLineNum = m_lineNum;
+
+ m_pos += idents[incbinType].length();
+
+ SkipWhitespace();
+
+ if (m_buffer[m_pos] != '(')
+ {
+ m_pos = oldPos;
+ m_lineNum = oldLineNum;
+ return;
+ }
+
+ m_pos++;
+
+ std::printf("{");
+
+ while (true)
+ {
+ SkipWhitespace();
+
+ if (m_buffer[m_pos] != '"')
+ RaiseError("expected double quote");
+
+ m_pos++;
+
+ int startPos = m_pos;
+
+ while (m_buffer[m_pos] != '"')
+ {
+ if (m_buffer[m_pos] == 0)
+ {
+ if (m_pos >= m_size)
+ RaiseError("unexpected EOF in path string");
+ else
+ RaiseError("unexpected null character in path string");
+ }
+
+ if (m_buffer[m_pos] == '\r' || m_buffer[m_pos] == '\n')
+ RaiseError("unexpected end of line character in path string");
+
+ if (m_buffer[m_pos] == '\\')
+ RaiseError("unexpected escape in path string");
+
+ m_pos++;
+ }
+
+ std::string path(&m_buffer[startPos], m_pos - startPos);
+
+ m_pos++;
+
+ int fileSize;
+ std::unique_ptr<unsigned char[]> buffer = ReadWholeFile(path, fileSize);
+
+ if ((fileSize % size) != 0)
+ RaiseError("Size %d doesn't evenly divide file size %d.\n", size, fileSize);
+
+ int count = fileSize / size;
+ int offset = 0;
+
+ for (int i = 0; i < count; i++)
+ {
+ int data = ExtractData(buffer, offset, size);
+ offset += size;
+
+ if (isSigned)
+ std::printf("%d,", data);
+ else
+ std::printf("%uu,", data);
+ }
+
+ SkipWhitespace();
+
+ if (m_buffer[m_pos] != ',')
+ break;
+
+ m_pos++;
+ }
+
+ if (m_buffer[m_pos] != ')')
+ RaiseError("expected ')'");
+
+ m_pos++;
+
+ std::printf("}");
+}
+
+// Reports a diagnostic message.
+void CFile::ReportDiagnostic(const char* type, const char* format, std::va_list args)
+{
+ const int bufferSize = 1024;
+ char buffer[bufferSize];
+ std::vsnprintf(buffer, bufferSize, format, args);
+ std::fprintf(stderr, "%s:%ld: %s: %s\n", m_filename.c_str(), m_lineNum, type, buffer);
+}
+
+#define DO_REPORT(type) \
+do \
+{ \
+ std::va_list args; \
+ va_start(args, format); \
+ ReportDiagnostic(type, format, args); \
+ va_end(args); \
+} while (0)
+
+// Reports an error diagnostic and terminates the program.
+void CFile::RaiseError(const char* format, ...)
+{
+ DO_REPORT("error");
+ std::exit(1);
+}
+
+// Reports a warning diagnostic.
+void CFile::RaiseWarning(const char* format, ...)
+{
+ DO_REPORT("warning");
+}
diff --git a/tools/preproc/charmap.cpp b/tools/preproc/charmap.cpp index a7bedfe..55366bc 100644 --- a/tools/preproc/charmap.cpp +++ b/tools/preproc/charmap.cpp @@ -1,408 +1,408 @@ -// Copyright(c) 2016 YamaArashi -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <cstdio> -#include <cstdint> -#include <cstdarg> -#include "preproc.h" -#include "charmap.h" -#include "char_util.h" -#include "utf8.h" - -enum LhsType -{ - Char, - Escape, - Constant, - None -}; - -struct Lhs -{ - LhsType type; - std::string name; - std::int32_t code; -}; - -class CharmapReader -{ -public: - CharmapReader(std::string filename); - CharmapReader(const CharmapReader&) = delete; - ~CharmapReader(); - Lhs ReadLhs(); - void ExpectEqualsSign(); - std::string ReadSequence(); - void ExpectEmptyRestOfLine(); - void RaiseError(const char* format, ...); - -private: - char* m_buffer; - long m_pos; - long m_size; - long m_lineNum; - std::string m_filename; - - void RemoveComments(); - std::string ReadConstant(); - void SkipWhitespace(); -}; - -CharmapReader::CharmapReader(std::string filename) : m_filename(filename) -{ - FILE *fp = std::fopen(filename.c_str(), "rb"); - - if (fp == NULL) - FATAL_ERROR("Failed to open \"%s\" for reading.\n", filename.c_str()); - - std::fseek(fp, 0, SEEK_END); - - m_size = std::ftell(fp); - - if (m_size < 0) - FATAL_ERROR("File size of \"%s\" is less than zero.\n", filename.c_str()); - - m_buffer = new char[m_size + 1]; - - std::rewind(fp); - - if (std::fread(m_buffer, m_size, 1, fp) != 1) - FATAL_ERROR("Failed to read \"%s\".\n", filename.c_str()); - - m_buffer[m_size] = 0; - - std::fclose(fp); - - m_pos = 0; - m_lineNum = 1; - - RemoveComments(); -} - -CharmapReader::~CharmapReader() -{ - delete[] m_buffer; -} - -Lhs CharmapReader::ReadLhs() -{ - Lhs lhs; - - for (;;) - { - SkipWhitespace(); - - if (m_buffer[m_pos] == '\n') - { - m_pos++; - m_lineNum++; - } - else - { - break; - } - } - - if (m_buffer[m_pos] == '\'') - { - m_pos++; - - bool isEscape = (m_buffer[m_pos] == '\\'); - - if (isEscape) - { - m_pos++; - } - - unsigned char c = m_buffer[m_pos]; - - if (c == 0) - { - if (m_pos >= m_size) - RaiseError("unexpected EOF in UTF-8 character literal"); - else - RaiseError("unexpected null character in UTF-8 character literal"); - } - - if (IsAscii(c) && !IsAsciiPrintable(c)) - RaiseError("unexpected character U+%X in UTF-8 character literal", c); - - UnicodeChar unicodeChar = DecodeUtf8(&m_buffer[m_pos]); - std::int32_t code = unicodeChar.code; - - if (code == -1) - RaiseError("invalid encoding in UTF-8 character literal"); - - m_pos += unicodeChar.encodingLength; - - if (m_buffer[m_pos] != '\'') - RaiseError("unterminated character literal"); - - m_pos++; - - lhs.code = code; - - if (isEscape) - { - if (code >= 128) - RaiseError("escapes using non-ASCII characters are invalid"); - - switch (code) - { - case '\'': - lhs.type = LhsType::Char; - break; - case '\\': - lhs.type = LhsType::Char; - case '"': - RaiseError("cannot escape double quote"); - break; - default: - lhs.type = LhsType::Escape; - } - } - else - { - if (code == '\'') - RaiseError("empty character literal"); - - lhs.type = LhsType::Char; - } - } - else if (IsIdentifierStartingChar(m_buffer[m_pos])) - { - lhs.type = LhsType::Constant; - lhs.name = ReadConstant(); - } - else if (m_buffer[m_pos] == '\r') - { - RaiseError("only Unix-style LF newlines are supported"); - } - else if (m_buffer[m_pos] == 0) - { - if (m_pos < m_size) - RaiseError("unexpected null character"); - lhs.type = LhsType::None; - } - else - { - RaiseError("junk at start of line"); - } - - return lhs; -} - -void CharmapReader::ExpectEqualsSign() -{ - SkipWhitespace(); - - if (m_buffer[m_pos] != '=') - RaiseError("expected equals sign"); - - m_pos++; -} - -static unsigned int ConvertHexDigit(char c) -{ - unsigned int digit = 0; - - if (c >= '0' && c <= '9') - digit = c - '0'; - else if (c >= 'A' && c <= 'F') - digit = 10 + c - 'A'; - else if (c >= 'a' && c <= 'f') - digit = 10 + c - 'a'; - - return digit; -} - -std::string CharmapReader::ReadSequence() -{ - SkipWhitespace(); - - long startPos = m_pos; - - unsigned int length = 0; - - while (IsAsciiHexDigit(m_buffer[m_pos]) && IsAsciiHexDigit(m_buffer[m_pos + 1])) - { - m_pos += 2; - length++; - - if (length > kMaxCharmapSequenceLength) - RaiseError("byte sequence too long (max is %lu bytes)", kMaxCharmapSequenceLength); - - SkipWhitespace(); - } - - if (IsAsciiHexDigit(m_buffer[m_pos])) - RaiseError("each byte must have 2 hex digits"); - - if (length == 0) - RaiseError("expected byte sequence"); - - std::string sequence; - sequence.reserve(length); - - m_pos = startPos; - - for (unsigned int i = 0; i < length; i++) - { - unsigned int digit1 = ConvertHexDigit(m_buffer[m_pos]); - unsigned int digit2 = ConvertHexDigit(m_buffer[m_pos + 1]); - unsigned char byte = digit1 * 16 + digit2; - sequence += byte; - - m_pos += 2; - SkipWhitespace(); - } - - return sequence; -} - -void CharmapReader::ExpectEmptyRestOfLine() -{ - SkipWhitespace(); - - if (m_buffer[m_pos] == 0) - { - if (m_pos < m_size) - RaiseError("unexpected null character"); - } - else if (m_buffer[m_pos] == '\n') - { - m_pos++; - m_lineNum++; - } - else if (m_buffer[m_pos] == '\r') - { - RaiseError("only Unix-style LF newlines are supported"); - } - else - { - RaiseError("junk at end of line"); - } -} - -void CharmapReader::RaiseError(const char* format, ...) -{ - const int bufferSize = 1024; - char buffer[bufferSize]; - - std::va_list args; - va_start(args, format); - std::vsnprintf(buffer, bufferSize, format, args); - va_end(args); - - std::fprintf(stderr, "%s:%ld: error: %s\n", m_filename.c_str(), m_lineNum, buffer); - - std::exit(1); -} - -void CharmapReader::RemoveComments() -{ - long pos = 0; - bool inString = false; - - for (;;) - { - if (m_buffer[pos] == 0) - return; - - if (inString) - { - if (m_buffer[pos] == '\\' && m_buffer[pos + 1] == '\'') - { - pos += 2; - } - else - { - if (m_buffer[pos] == '\'') - inString = false; - pos++; - } - } - else if (m_buffer[pos] == '@') - { - while (m_buffer[pos] != '\n' && m_buffer[pos] != 0) - m_buffer[pos++] = ' '; - } - else - { - if (m_buffer[pos] == '\'') - inString = true; - pos++; - } - } -} - -std::string CharmapReader::ReadConstant() -{ - long startPos = m_pos; - - while (IsIdentifierChar(m_buffer[m_pos])) - m_pos++; - - return std::string(&m_buffer[startPos], m_pos - startPos); -} - -void CharmapReader::SkipWhitespace() -{ - while (m_buffer[m_pos] == '\t' || m_buffer[m_pos] == ' ') - m_pos++; -} - -Charmap::Charmap(std::string filename) -{ - CharmapReader reader(filename); - - for (;;) - { - Lhs lhs = reader.ReadLhs(); - - if (lhs.type == LhsType::None) - return; - - reader.ExpectEqualsSign(); - - std::string sequence = reader.ReadSequence(); - - switch (lhs.type) - { - case LhsType::Char: - if (m_chars.find(lhs.code) != m_chars.end()) - reader.RaiseError("redefining char"); - m_chars[lhs.code] = sequence; - break; - case LhsType::Escape: - if (m_escapes[lhs.code].length() != 0) - reader.RaiseError("redefining escape"); - m_escapes[lhs.code] = sequence; - break; - case LhsType::Constant: - if (m_constants.find(lhs.name) != m_constants.end()) - reader.RaiseError("redefining constant"); - m_constants[lhs.name] = sequence; - break; - } - - reader.ExpectEmptyRestOfLine(); - } -} +// Copyright(c) 2016 YamaArashi
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#include <cstdio>
+#include <cstdint>
+#include <cstdarg>
+#include "preproc.h"
+#include "charmap.h"
+#include "char_util.h"
+#include "utf8.h"
+
+enum LhsType
+{
+ Char,
+ Escape,
+ Constant,
+ None
+};
+
+struct Lhs
+{
+ LhsType type;
+ std::string name;
+ std::int32_t code;
+};
+
+class CharmapReader
+{
+public:
+ CharmapReader(std::string filename);
+ CharmapReader(const CharmapReader&) = delete;
+ ~CharmapReader();
+ Lhs ReadLhs();
+ void ExpectEqualsSign();
+ std::string ReadSequence();
+ void ExpectEmptyRestOfLine();
+ void RaiseError(const char* format, ...);
+
+private:
+ char* m_buffer;
+ long m_pos;
+ long m_size;
+ long m_lineNum;
+ std::string m_filename;
+
+ void RemoveComments();
+ std::string ReadConstant();
+ void SkipWhitespace();
+};
+
+CharmapReader::CharmapReader(std::string filename) : m_filename(filename)
+{
+ FILE *fp = std::fopen(filename.c_str(), "rb");
+
+ if (fp == NULL)
+ FATAL_ERROR("Failed to open \"%s\" for reading.\n", filename.c_str());
+
+ std::fseek(fp, 0, SEEK_END);
+
+ m_size = std::ftell(fp);
+
+ if (m_size < 0)
+ FATAL_ERROR("File size of \"%s\" is less than zero.\n", filename.c_str());
+
+ m_buffer = new char[m_size + 1];
+
+ std::rewind(fp);
+
+ if (std::fread(m_buffer, m_size, 1, fp) != 1)
+ FATAL_ERROR("Failed to read \"%s\".\n", filename.c_str());
+
+ m_buffer[m_size] = 0;
+
+ std::fclose(fp);
+
+ m_pos = 0;
+ m_lineNum = 1;
+
+ RemoveComments();
+}
+
+CharmapReader::~CharmapReader()
+{
+ delete[] m_buffer;
+}
+
+Lhs CharmapReader::ReadLhs()
+{
+ Lhs lhs;
+
+ for (;;)
+ {
+ SkipWhitespace();
+
+ if (m_buffer[m_pos] == '\n')
+ {
+ m_pos++;
+ m_lineNum++;
+ }
+ else
+ {
+ break;
+ }
+ }
+
+ if (m_buffer[m_pos] == '\'')
+ {
+ m_pos++;
+
+ bool isEscape = (m_buffer[m_pos] == '\\');
+
+ if (isEscape)
+ {
+ m_pos++;
+ }
+
+ unsigned char c = m_buffer[m_pos];
+
+ if (c == 0)
+ {
+ if (m_pos >= m_size)
+ RaiseError("unexpected EOF in UTF-8 character literal");
+ else
+ RaiseError("unexpected null character in UTF-8 character literal");
+ }
+
+ if (IsAscii(c) && !IsAsciiPrintable(c))
+ RaiseError("unexpected character U+%X in UTF-8 character literal", c);
+
+ UnicodeChar unicodeChar = DecodeUtf8(&m_buffer[m_pos]);
+ std::int32_t code = unicodeChar.code;
+
+ if (code == -1)
+ RaiseError("invalid encoding in UTF-8 character literal");
+
+ m_pos += unicodeChar.encodingLength;
+
+ if (m_buffer[m_pos] != '\'')
+ RaiseError("unterminated character literal");
+
+ m_pos++;
+
+ lhs.code = code;
+
+ if (isEscape)
+ {
+ if (code >= 128)
+ RaiseError("escapes using non-ASCII characters are invalid");
+
+ switch (code)
+ {
+ case '\'':
+ lhs.type = LhsType::Char;
+ break;
+ case '\\':
+ lhs.type = LhsType::Char;
+ case '"':
+ RaiseError("cannot escape double quote");
+ break;
+ default:
+ lhs.type = LhsType::Escape;
+ }
+ }
+ else
+ {
+ if (code == '\'')
+ RaiseError("empty character literal");
+
+ lhs.type = LhsType::Char;
+ }
+ }
+ else if (IsIdentifierStartingChar(m_buffer[m_pos]))
+ {
+ lhs.type = LhsType::Constant;
+ lhs.name = ReadConstant();
+ }
+ else if (m_buffer[m_pos] == '\r')
+ {
+ RaiseError("only Unix-style LF newlines are supported");
+ }
+ else if (m_buffer[m_pos] == 0)
+ {
+ if (m_pos < m_size)
+ RaiseError("unexpected null character");
+ lhs.type = LhsType::None;
+ }
+ else
+ {
+ RaiseError("junk at start of line");
+ }
+
+ return lhs;
+}
+
+void CharmapReader::ExpectEqualsSign()
+{
+ SkipWhitespace();
+
+ if (m_buffer[m_pos] != '=')
+ RaiseError("expected equals sign");
+
+ m_pos++;
+}
+
+static unsigned int ConvertHexDigit(char c)
+{
+ unsigned int digit = 0;
+
+ if (c >= '0' && c <= '9')
+ digit = c - '0';
+ else if (c >= 'A' && c <= 'F')
+ digit = 10 + c - 'A';
+ else if (c >= 'a' && c <= 'f')
+ digit = 10 + c - 'a';
+
+ return digit;
+}
+
+std::string CharmapReader::ReadSequence()
+{
+ SkipWhitespace();
+
+ long startPos = m_pos;
+
+ unsigned int length = 0;
+
+ while (IsAsciiHexDigit(m_buffer[m_pos]) && IsAsciiHexDigit(m_buffer[m_pos + 1]))
+ {
+ m_pos += 2;
+ length++;
+
+ if (length > kMaxCharmapSequenceLength)
+ RaiseError("byte sequence too long (max is %lu bytes)", kMaxCharmapSequenceLength);
+
+ SkipWhitespace();
+ }
+
+ if (IsAsciiHexDigit(m_buffer[m_pos]))
+ RaiseError("each byte must have 2 hex digits");
+
+ if (length == 0)
+ RaiseError("expected byte sequence");
+
+ std::string sequence;
+ sequence.reserve(length);
+
+ m_pos = startPos;
+
+ for (unsigned int i = 0; i < length; i++)
+ {
+ unsigned int digit1 = ConvertHexDigit(m_buffer[m_pos]);
+ unsigned int digit2 = ConvertHexDigit(m_buffer[m_pos + 1]);
+ unsigned char byte = digit1 * 16 + digit2;
+ sequence += byte;
+
+ m_pos += 2;
+ SkipWhitespace();
+ }
+
+ return sequence;
+}
+
+void CharmapReader::ExpectEmptyRestOfLine()
+{
+ SkipWhitespace();
+
+ if (m_buffer[m_pos] == 0)
+ {
+ if (m_pos < m_size)
+ RaiseError("unexpected null character");
+ }
+ else if (m_buffer[m_pos] == '\n')
+ {
+ m_pos++;
+ m_lineNum++;
+ }
+ else if (m_buffer[m_pos] == '\r')
+ {
+ RaiseError("only Unix-style LF newlines are supported");
+ }
+ else
+ {
+ RaiseError("junk at end of line");
+ }
+}
+
+void CharmapReader::RaiseError(const char* format, ...)
+{
+ const int bufferSize = 1024;
+ char buffer[bufferSize];
+
+ std::va_list args;
+ va_start(args, format);
+ std::vsnprintf(buffer, bufferSize, format, args);
+ va_end(args);
+
+ std::fprintf(stderr, "%s:%ld: error: %s\n", m_filename.c_str(), m_lineNum, buffer);
+
+ std::exit(1);
+}
+
+void CharmapReader::RemoveComments()
+{
+ long pos = 0;
+ bool inString = false;
+
+ for (;;)
+ {
+ if (m_buffer[pos] == 0)
+ return;
+
+ if (inString)
+ {
+ if (m_buffer[pos] == '\\' && m_buffer[pos + 1] == '\'')
+ {
+ pos += 2;
+ }
+ else
+ {
+ if (m_buffer[pos] == '\'')
+ inString = false;
+ pos++;
+ }
+ }
+ else if (m_buffer[pos] == '@')
+ {
+ while (m_buffer[pos] != '\n' && m_buffer[pos] != 0)
+ m_buffer[pos++] = ' ';
+ }
+ else
+ {
+ if (m_buffer[pos] == '\'')
+ inString = true;
+ pos++;
+ }
+ }
+}
+
+std::string CharmapReader::ReadConstant()
+{
+ long startPos = m_pos;
+
+ while (IsIdentifierChar(m_buffer[m_pos]))
+ m_pos++;
+
+ return std::string(&m_buffer[startPos], m_pos - startPos);
+}
+
+void CharmapReader::SkipWhitespace()
+{
+ while (m_buffer[m_pos] == '\t' || m_buffer[m_pos] == ' ')
+ m_pos++;
+}
+
+Charmap::Charmap(std::string filename)
+{
+ CharmapReader reader(filename);
+
+ for (;;)
+ {
+ Lhs lhs = reader.ReadLhs();
+
+ if (lhs.type == LhsType::None)
+ return;
+
+ reader.ExpectEqualsSign();
+
+ std::string sequence = reader.ReadSequence();
+
+ switch (lhs.type)
+ {
+ case LhsType::Char:
+ if (m_chars.find(lhs.code) != m_chars.end())
+ reader.RaiseError("redefining char");
+ m_chars[lhs.code] = sequence;
+ break;
+ case LhsType::Escape:
+ if (m_escapes[lhs.code].length() != 0)
+ reader.RaiseError("redefining escape");
+ m_escapes[lhs.code] = sequence;
+ break;
+ case LhsType::Constant:
+ if (m_constants.find(lhs.name) != m_constants.end())
+ reader.RaiseError("redefining constant");
+ m_constants[lhs.name] = sequence;
+ break;
+ }
+
+ reader.ExpectEmptyRestOfLine();
+ }
+}
diff --git a/tools/preproc/preproc.cpp b/tools/preproc/preproc.cpp index c9c6042..41856f7 100644 --- a/tools/preproc/preproc.cpp +++ b/tools/preproc/preproc.cpp @@ -1,156 +1,156 @@ -// Copyright(c) 2016 YamaArashi -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <string> -#include <stack> -#include "preproc.h" -#include "asm_file.h" -#include "c_file.h" -#include "charmap.h" - -Charmap* g_charmap; - -void PrintAsmBytes(unsigned char *s, int length) -{ - if (length > 0) - { - std::printf("\t.byte "); - for (int i = 0; i < length; i++) - { - std::printf("0x%02X", s[i]); - - if (i < length - 1) - std::printf(", "); - } - std::putchar('\n'); - } -} - -void PreprocAsmFile(std::string filename) -{ - std::stack<AsmFile> stack; - - stack.push(AsmFile(filename)); - - for (;;) - { - while (stack.top().IsAtEnd()) - { - stack.pop(); - - if (stack.empty()) - return; - else - stack.top().OutputLocation(); - } - - Directive directive = stack.top().GetDirective(); - - switch (directive) - { - case Directive::Include: - stack.push(AsmFile(stack.top().ReadPath())); - stack.top().OutputLocation(); - break; - case Directive::String: - { - unsigned char s[kMaxStringLength]; - int length = stack.top().ReadString(s); - PrintAsmBytes(s, length); - break; - } - case Directive::Braille: - { - unsigned char s[kMaxStringLength]; - int length = stack.top().ReadBraille(s); - PrintAsmBytes(s, length); - break; - } - case Directive::Unknown: - { - std::string globalLabel = stack.top().GetGlobalLabel(); - - if (globalLabel.length() != 0) - { - const char *s = globalLabel.c_str(); - std::printf("%s: ; .global %s\n", s, s); - } - else - { - stack.top().OutputLine(); - } - - break; - } - } - } -} - -void PreprocCFile(std::string filename) -{ - CFile cFile(filename); - cFile.Preproc(); -} - -char* GetFileExtension(char* filename) -{ - char* extension = filename; - - while (*extension != 0) - extension++; - - while (extension > filename && *extension != '.') - extension--; - - if (extension == filename) - return nullptr; - - extension++; - - if (*extension == 0) - return nullptr; - - return extension; -} - -int main(int argc, char **argv) -{ - if (argc != 3) - { - std::fprintf(stderr, "Usage: %s SRC_FILE CHARMAP_FILE", argv[0]); - return 1; - } - - g_charmap = new Charmap(argv[2]); - - char* extension = GetFileExtension(argv[1]); - - if (!extension) - FATAL_ERROR("\"%s\" has no file extension.\n", argv[1]); - - if ((extension[0] == 's') && extension[1] == 0) - PreprocAsmFile(argv[1]); - else if ((extension[0] == 'c' || extension[0] == 'i') && extension[1] == 0) - PreprocCFile(argv[1]); - else - FATAL_ERROR("\"%s\" has an unknown file extension of \"%s\".\n", argv[1], extension); - - return 0; -} +// Copyright(c) 2016 YamaArashi
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#include <string>
+#include <stack>
+#include "preproc.h"
+#include "asm_file.h"
+#include "c_file.h"
+#include "charmap.h"
+
+Charmap* g_charmap;
+
+void PrintAsmBytes(unsigned char *s, int length)
+{
+ if (length > 0)
+ {
+ std::printf("\t.byte ");
+ for (int i = 0; i < length; i++)
+ {
+ std::printf("0x%02X", s[i]);
+
+ if (i < length - 1)
+ std::printf(", ");
+ }
+ std::putchar('\n');
+ }
+}
+
+void PreprocAsmFile(std::string filename)
+{
+ std::stack<AsmFile> stack;
+
+ stack.push(AsmFile(filename));
+
+ for (;;)
+ {
+ while (stack.top().IsAtEnd())
+ {
+ stack.pop();
+
+ if (stack.empty())
+ return;
+ else
+ stack.top().OutputLocation();
+ }
+
+ Directive directive = stack.top().GetDirective();
+
+ switch (directive)
+ {
+ case Directive::Include:
+ stack.push(AsmFile(stack.top().ReadPath()));
+ stack.top().OutputLocation();
+ break;
+ case Directive::String:
+ {
+ unsigned char s[kMaxStringLength];
+ int length = stack.top().ReadString(s);
+ PrintAsmBytes(s, length);
+ break;
+ }
+ case Directive::Braille:
+ {
+ unsigned char s[kMaxStringLength];
+ int length = stack.top().ReadBraille(s);
+ PrintAsmBytes(s, length);
+ break;
+ }
+ case Directive::Unknown:
+ {
+ std::string globalLabel = stack.top().GetGlobalLabel();
+
+ if (globalLabel.length() != 0)
+ {
+ const char *s = globalLabel.c_str();
+ std::printf("%s: ; .global %s\n", s, s);
+ }
+ else
+ {
+ stack.top().OutputLine();
+ }
+
+ break;
+ }
+ }
+ }
+}
+
+void PreprocCFile(std::string filename)
+{
+ CFile cFile(filename);
+ cFile.Preproc();
+}
+
+char* GetFileExtension(char* filename)
+{
+ char* extension = filename;
+
+ while (*extension != 0)
+ extension++;
+
+ while (extension > filename && *extension != '.')
+ extension--;
+
+ if (extension == filename)
+ return nullptr;
+
+ extension++;
+
+ if (*extension == 0)
+ return nullptr;
+
+ return extension;
+}
+
+int main(int argc, char **argv)
+{
+ if (argc != 3)
+ {
+ std::fprintf(stderr, "Usage: %s SRC_FILE CHARMAP_FILE", argv[0]);
+ return 1;
+ }
+
+ g_charmap = new Charmap(argv[2]);
+
+ char* extension = GetFileExtension(argv[1]);
+
+ if (!extension)
+ FATAL_ERROR("\"%s\" has no file extension.\n", argv[1]);
+
+ if ((extension[0] == 's') && extension[1] == 0)
+ PreprocAsmFile(argv[1]);
+ else if ((extension[0] == 'c' || extension[0] == 'i') && extension[1] == 0)
+ PreprocCFile(argv[1]);
+ else
+ FATAL_ERROR("\"%s\" has an unknown file extension of \"%s\".\n", argv[1], extension);
+
+ return 0;
+}
diff --git a/tools/preproc/string_parser.cpp b/tools/preproc/string_parser.cpp index dd5196a..b0a4875 100644 --- a/tools/preproc/string_parser.cpp +++ b/tools/preproc/string_parser.cpp @@ -1,355 +1,355 @@ -// Copyright(c) 2016 YamaArashi -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <cstdio> -#include <cstdarg> -#include <stdexcept> -#include "preproc.h" -#include "string_parser.h" -#include "char_util.h" -#include "utf8.h" - -// Reads a charmap char or escape sequence. -std::string StringParser::ReadCharOrEscape() -{ - std::string sequence; - - bool isEscape = (m_buffer[m_pos] == '\\'); - - if (isEscape) - { - m_pos++; - - if (m_buffer[m_pos] == '"') - { - sequence = g_charmap->Char('"'); - - if (sequence.length() == 0) - RaiseError("no mapping exists for double quote"); - - return sequence; - } - else if (m_buffer[m_pos] == '\\') - { - sequence = g_charmap->Char('\\'); - - if (sequence.length() == 0) - RaiseError("no mapping exists for backslash"); - - return sequence; - } - } - - unsigned char c = m_buffer[m_pos]; - - if (c == 0) - { - if (m_pos >= m_size) - RaiseError("unexpected EOF in UTF-8 string"); - else - RaiseError("unexpected null character in UTF-8 string"); - } - - if (IsAscii(c) && !IsAsciiPrintable(c)) - RaiseError("unexpected character U+%X in UTF-8 string", c); - - UnicodeChar unicodeChar = DecodeUtf8(&m_buffer[m_pos]); - m_pos += unicodeChar.encodingLength; - std::int32_t code = unicodeChar.code; - - if (code == -1) - RaiseError("invalid encoding in UTF-8 string"); - - if (isEscape && code >= 128) - RaiseError("escapes using non-ASCII characters are invalid"); - - sequence = isEscape ? g_charmap->Escape(code) : g_charmap->Char(code); - - if (sequence.length() == 0) - { - if (isEscape) - RaiseError("unknown escape '\\%c'", code); - else - RaiseError("unknown character U+%X", code); - } - - return sequence; -} - -// Reads a charmap constant, i.e. "{FOO}". -std::string StringParser::ReadBracketedConstants() -{ - std::string totalSequence; - - m_pos++; // Assume we're on the left curly bracket. - - while (m_buffer[m_pos] != '}') - { - SkipWhitespace(); - - if (IsIdentifierStartingChar(m_buffer[m_pos])) - { - long startPos = m_pos; - - m_pos++; - - while (IsIdentifierChar(m_buffer[m_pos])) - m_pos++; - - std::string sequence = g_charmap->Constant(std::string(&m_buffer[startPos], m_pos - startPos)); - - if (sequence.length() == 0) - { - m_buffer[m_pos] = 0; - RaiseError("unknown constant '%s'", &m_buffer[startPos]); - } - - totalSequence += sequence; - } - else if (IsAsciiDigit(m_buffer[m_pos])) - { - Integer integer = ReadInteger(); - - switch (integer.size) - { - case 1: - totalSequence += (unsigned char)integer.value; - break; - case 2: - totalSequence += (unsigned char)integer.value; - totalSequence += (unsigned char)(integer.value >> 8); - break; - case 4: - totalSequence += (unsigned char)integer.value; - totalSequence += (unsigned char)(integer.value >> 8); - totalSequence += (unsigned char)(integer.value >> 16); - totalSequence += (unsigned char)(integer.value >> 24); - break; - } - } - else if (m_buffer[m_pos] == 0) - { - if (m_pos >= m_size) - RaiseError("unexpected EOF after left curly bracket"); - else - RaiseError("unexpected null character within curly brackets"); - } - else - { - if (IsAsciiPrintable(m_buffer[m_pos])) - RaiseError("unexpected character '%c' within curly brackets", m_buffer[m_pos]); - else - RaiseError("unexpected character '\\x%02X' within curly brackets", m_buffer[m_pos]); - } - } - - m_pos++; // Go past the right curly bracket. - - return totalSequence; -} - -// Reads a charmap string. -int StringParser::ParseString(long srcPos, unsigned char* dest, int& destLength) -{ - m_pos = srcPos; - - if (m_buffer[m_pos] != '"') - RaiseError("expected UTF-8 string literal"); - - long start = m_pos; - - m_pos++; - - destLength = 0; - - while (m_buffer[m_pos] != '"') - { - std::string sequence = (m_buffer[m_pos] == '{') ? ReadBracketedConstants() : ReadCharOrEscape(); - - for (const char& c : sequence) - { - if (destLength == kMaxStringLength) - RaiseError("mapped string longer than %d bytes", kMaxStringLength); - - dest[destLength++] = c; - } - } - - m_pos++; // Go past the right quote. - - return m_pos - start; -} - -void StringParser::RaiseError(const char* format, ...) -{ - const int bufferSize = 1024; - char buffer[bufferSize]; - - std::va_list args; - va_start(args, format); - std::vsnprintf(buffer, bufferSize, format, args); - va_end(args); - - throw std::runtime_error(buffer); -} - -// Converts digit character to numerical value. -static int ConvertDigit(char c, int radix) -{ - int digit; - - if (c >= '0' && c <= '9') - digit = c - '0'; - else if (c >= 'A' && c <= 'F') - digit = 10 + c - 'A'; - else if (c >= 'a' && c <= 'f') - digit = 10 + c - 'a'; - else - return -1; - - return (digit < radix) ? digit : -1; -} - -void StringParser::SkipRestOfInteger(int radix) -{ - while (ConvertDigit(m_buffer[m_pos], radix) != -1) - m_pos++; -} - -StringParser::Integer StringParser::ReadDecimal() -{ - const int radix = 10; - std::uint64_t n = 0; - int digit; - std::uint64_t max = UINT32_MAX; - long startPos = m_pos; - - while ((digit = ConvertDigit(m_buffer[m_pos], radix)) != -1) - { - n = n * radix + digit; - - if (n >= max) - { - SkipRestOfInteger(radix); - - std::string intLiteral(m_buffer + startPos, m_pos - startPos); - RaiseError("integer literal \"%s\" is too large", intLiteral.c_str()); - } - - m_pos++; - } - - int size; - - if (m_buffer[m_pos] == 'H') - { - if (n >= 0x10000) - { - RaiseError("%lu is too large to be a halfword", (unsigned long)n); - } - - size = 2; - m_pos++; - } - else if (m_buffer[m_pos] == 'W') - { - size = 4; - m_pos++; - } - else - { - if (n >= 0x10000) - size = 4; - else if (n >= 0x100) - size = 2; - else - size = 1; - } - - return{ static_cast<std::uint32_t>(n), size }; -} - -StringParser::Integer StringParser::ReadHex() -{ - const int radix = 16; - std::uint64_t n = 0; - int digit; - std::uint64_t max = UINT32_MAX; - long startPos = m_pos; - - while ((digit = ConvertDigit(m_buffer[m_pos], radix)) != -1) - { - n = n * radix + digit; - - if (n >= max) - { - SkipRestOfInteger(radix); - - std::string intLiteral(m_buffer + startPos, m_pos - startPos); - RaiseError("integer literal \"%s\" is too large", intLiteral.c_str()); - } - - m_pos++; - } - - int length = m_pos - startPos; - int size = 0; - - switch (length) - { - case 2: - size = 1; - break; - case 4: - size = 2; - break; - case 8: - size = 4; - break; - default: - { - std::string intLiteral(m_buffer + startPos, m_pos - startPos); - RaiseError("hex integer literal \"0x%s\" doesn't have length of 2, 4, or 8 digits", intLiteral.c_str()); - } - } - - return{ static_cast<std::uint32_t>(n), size }; -} - -StringParser::Integer StringParser::ReadInteger() -{ - if (!IsAsciiDigit(m_buffer[m_pos])) - RaiseError("expected integer"); - - if (m_buffer[m_pos] == '0' && m_buffer[m_pos + 1] == 'x') - { - m_pos += 2; - return ReadHex(); - } - - return ReadDecimal(); -} - -// Skips tabs and spaces. -void StringParser::SkipWhitespace() -{ - while (m_buffer[m_pos] == '\t' || m_buffer[m_pos] == ' ') - m_pos++; -} +// Copyright(c) 2016 YamaArashi
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#include <cstdio>
+#include <cstdarg>
+#include <stdexcept>
+#include "preproc.h"
+#include "string_parser.h"
+#include "char_util.h"
+#include "utf8.h"
+
+// Reads a charmap char or escape sequence.
+std::string StringParser::ReadCharOrEscape()
+{
+ std::string sequence;
+
+ bool isEscape = (m_buffer[m_pos] == '\\');
+
+ if (isEscape)
+ {
+ m_pos++;
+
+ if (m_buffer[m_pos] == '"')
+ {
+ sequence = g_charmap->Char('"');
+
+ if (sequence.length() == 0)
+ RaiseError("no mapping exists for double quote");
+
+ return sequence;
+ }
+ else if (m_buffer[m_pos] == '\\')
+ {
+ sequence = g_charmap->Char('\\');
+
+ if (sequence.length() == 0)
+ RaiseError("no mapping exists for backslash");
+
+ return sequence;
+ }
+ }
+
+ unsigned char c = m_buffer[m_pos];
+
+ if (c == 0)
+ {
+ if (m_pos >= m_size)
+ RaiseError("unexpected EOF in UTF-8 string");
+ else
+ RaiseError("unexpected null character in UTF-8 string");
+ }
+
+ if (IsAscii(c) && !IsAsciiPrintable(c))
+ RaiseError("unexpected character U+%X in UTF-8 string", c);
+
+ UnicodeChar unicodeChar = DecodeUtf8(&m_buffer[m_pos]);
+ m_pos += unicodeChar.encodingLength;
+ std::int32_t code = unicodeChar.code;
+
+ if (code == -1)
+ RaiseError("invalid encoding in UTF-8 string");
+
+ if (isEscape && code >= 128)
+ RaiseError("escapes using non-ASCII characters are invalid");
+
+ sequence = isEscape ? g_charmap->Escape(code) : g_charmap->Char(code);
+
+ if (sequence.length() == 0)
+ {
+ if (isEscape)
+ RaiseError("unknown escape '\\%c'", code);
+ else
+ RaiseError("unknown character U+%X", code);
+ }
+
+ return sequence;
+}
+
+// Reads a charmap constant, i.e. "{FOO}".
+std::string StringParser::ReadBracketedConstants()
+{
+ std::string totalSequence;
+
+ m_pos++; // Assume we're on the left curly bracket.
+
+ while (m_buffer[m_pos] != '}')
+ {
+ SkipWhitespace();
+
+ if (IsIdentifierStartingChar(m_buffer[m_pos]))
+ {
+ long startPos = m_pos;
+
+ m_pos++;
+
+ while (IsIdentifierChar(m_buffer[m_pos]))
+ m_pos++;
+
+ std::string sequence = g_charmap->Constant(std::string(&m_buffer[startPos], m_pos - startPos));
+
+ if (sequence.length() == 0)
+ {
+ m_buffer[m_pos] = 0;
+ RaiseError("unknown constant '%s'", &m_buffer[startPos]);
+ }
+
+ totalSequence += sequence;
+ }
+ else if (IsAsciiDigit(m_buffer[m_pos]))
+ {
+ Integer integer = ReadInteger();
+
+ switch (integer.size)
+ {
+ case 1:
+ totalSequence += (unsigned char)integer.value;
+ break;
+ case 2:
+ totalSequence += (unsigned char)integer.value;
+ totalSequence += (unsigned char)(integer.value >> 8);
+ break;
+ case 4:
+ totalSequence += (unsigned char)integer.value;
+ totalSequence += (unsigned char)(integer.value >> 8);
+ totalSequence += (unsigned char)(integer.value >> 16);
+ totalSequence += (unsigned char)(integer.value >> 24);
+ break;
+ }
+ }
+ else if (m_buffer[m_pos] == 0)
+ {
+ if (m_pos >= m_size)
+ RaiseError("unexpected EOF after left curly bracket");
+ else
+ RaiseError("unexpected null character within curly brackets");
+ }
+ else
+ {
+ if (IsAsciiPrintable(m_buffer[m_pos]))
+ RaiseError("unexpected character '%c' within curly brackets", m_buffer[m_pos]);
+ else
+ RaiseError("unexpected character '\\x%02X' within curly brackets", m_buffer[m_pos]);
+ }
+ }
+
+ m_pos++; // Go past the right curly bracket.
+
+ return totalSequence;
+}
+
+// Reads a charmap string.
+int StringParser::ParseString(long srcPos, unsigned char* dest, int& destLength)
+{
+ m_pos = srcPos;
+
+ if (m_buffer[m_pos] != '"')
+ RaiseError("expected UTF-8 string literal");
+
+ long start = m_pos;
+
+ m_pos++;
+
+ destLength = 0;
+
+ while (m_buffer[m_pos] != '"')
+ {
+ std::string sequence = (m_buffer[m_pos] == '{') ? ReadBracketedConstants() : ReadCharOrEscape();
+
+ for (const char& c : sequence)
+ {
+ if (destLength == kMaxStringLength)
+ RaiseError("mapped string longer than %d bytes", kMaxStringLength);
+
+ dest[destLength++] = c;
+ }
+ }
+
+ m_pos++; // Go past the right quote.
+
+ return m_pos - start;
+}
+
+void StringParser::RaiseError(const char* format, ...)
+{
+ const int bufferSize = 1024;
+ char buffer[bufferSize];
+
+ std::va_list args;
+ va_start(args, format);
+ std::vsnprintf(buffer, bufferSize, format, args);
+ va_end(args);
+
+ throw std::runtime_error(buffer);
+}
+
+// Converts digit character to numerical value.
+static int ConvertDigit(char c, int radix)
+{
+ int digit;
+
+ if (c >= '0' && c <= '9')
+ digit = c - '0';
+ else if (c >= 'A' && c <= 'F')
+ digit = 10 + c - 'A';
+ else if (c >= 'a' && c <= 'f')
+ digit = 10 + c - 'a';
+ else
+ return -1;
+
+ return (digit < radix) ? digit : -1;
+}
+
+void StringParser::SkipRestOfInteger(int radix)
+{
+ while (ConvertDigit(m_buffer[m_pos], radix) != -1)
+ m_pos++;
+}
+
+StringParser::Integer StringParser::ReadDecimal()
+{
+ const int radix = 10;
+ std::uint64_t n = 0;
+ int digit;
+ std::uint64_t max = UINT32_MAX;
+ long startPos = m_pos;
+
+ while ((digit = ConvertDigit(m_buffer[m_pos], radix)) != -1)
+ {
+ n = n * radix + digit;
+
+ if (n >= max)
+ {
+ SkipRestOfInteger(radix);
+
+ std::string intLiteral(m_buffer + startPos, m_pos - startPos);
+ RaiseError("integer literal \"%s\" is too large", intLiteral.c_str());
+ }
+
+ m_pos++;
+ }
+
+ int size;
+
+ if (m_buffer[m_pos] == 'H')
+ {
+ if (n >= 0x10000)
+ {
+ RaiseError("%lu is too large to be a halfword", (unsigned long)n);
+ }
+
+ size = 2;
+ m_pos++;
+ }
+ else if (m_buffer[m_pos] == 'W')
+ {
+ size = 4;
+ m_pos++;
+ }
+ else
+ {
+ if (n >= 0x10000)
+ size = 4;
+ else if (n >= 0x100)
+ size = 2;
+ else
+ size = 1;
+ }
+
+ return{ static_cast<std::uint32_t>(n), size };
+}
+
+StringParser::Integer StringParser::ReadHex()
+{
+ const int radix = 16;
+ std::uint64_t n = 0;
+ int digit;
+ std::uint64_t max = UINT32_MAX;
+ long startPos = m_pos;
+
+ while ((digit = ConvertDigit(m_buffer[m_pos], radix)) != -1)
+ {
+ n = n * radix + digit;
+
+ if (n >= max)
+ {
+ SkipRestOfInteger(radix);
+
+ std::string intLiteral(m_buffer + startPos, m_pos - startPos);
+ RaiseError("integer literal \"%s\" is too large", intLiteral.c_str());
+ }
+
+ m_pos++;
+ }
+
+ int length = m_pos - startPos;
+ int size = 0;
+
+ switch (length)
+ {
+ case 2:
+ size = 1;
+ break;
+ case 4:
+ size = 2;
+ break;
+ case 8:
+ size = 4;
+ break;
+ default:
+ {
+ std::string intLiteral(m_buffer + startPos, m_pos - startPos);
+ RaiseError("hex integer literal \"0x%s\" doesn't have length of 2, 4, or 8 digits", intLiteral.c_str());
+ }
+ }
+
+ return{ static_cast<std::uint32_t>(n), size };
+}
+
+StringParser::Integer StringParser::ReadInteger()
+{
+ if (!IsAsciiDigit(m_buffer[m_pos]))
+ RaiseError("expected integer");
+
+ if (m_buffer[m_pos] == '0' && m_buffer[m_pos + 1] == 'x')
+ {
+ m_pos += 2;
+ return ReadHex();
+ }
+
+ return ReadDecimal();
+}
+
+// Skips tabs and spaces.
+void StringParser::SkipWhitespace()
+{
+ while (m_buffer[m_pos] == '\t' || m_buffer[m_pos] == ' ')
+ m_pos++;
+}
diff --git a/tools/preproc/utf8.cpp b/tools/preproc/utf8.cpp index 7facfd4..8ed10a1 100644 --- a/tools/preproc/utf8.cpp +++ b/tools/preproc/utf8.cpp @@ -1,92 +1,92 @@ -// Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de> -// See http://bjoern.hoehrmann.de/utf-8/decoder/dfa/ for details. -// -// Copyright(c) 2016 YamaArashi -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <cstdint> -#include "utf8.h" - -static const unsigned char s_byteTypeTable[] = -{ - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 00..1f - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 20..3f - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 40..5f - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 60..7f - 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, // 80..9f - 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, // a0..bf - 8,8,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, // c0..df - 0xa,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x4,0x3,0x3, // e0..ef - 0xb,0x6,0x6,0x6,0x5,0x8,0x8,0x8,0x8,0x8,0x8,0x8,0x8,0x8,0x8,0x8, // f0..ff -}; - -const unsigned char s0 = 0 * 12; -const unsigned char s1 = 1 * 12; -const unsigned char s2 = 2 * 12; -const unsigned char s3 = 3 * 12; -const unsigned char s4 = 4 * 12; -const unsigned char s5 = 5 * 12; -const unsigned char s6 = 6 * 12; -const unsigned char s7 = 7 * 12; -const unsigned char s8 = 8 * 12; - -static const unsigned char s_transitionTable[] = -{ - s0,s1,s2,s3,s5,s8,s7,s1,s1,s1,s4,s6, // s0 - s1,s1,s1,s1,s1,s1,s1,s1,s1,s1,s1,s1, // s1 - s1,s0,s1,s1,s1,s1,s1,s0,s1,s0,s1,s1, // s2 - s1,s2,s1,s1,s1,s1,s1,s2,s1,s2,s1,s1, // s3 - s1,s1,s1,s1,s1,s1,s1,s2,s1,s1,s1,s1, // s4 - s1,s2,s1,s1,s1,s1,s1,s1,s1,s2,s1,s1, // s5 - s1,s1,s1,s1,s1,s1,s1,s3,s1,s3,s1,s1, // s6 - s1,s3,s1,s1,s1,s1,s1,s3,s1,s3,s1,s1, // s7 - s1,s3,s1,s1,s1,s1,s1,s1,s1,s1,s1,s1, // s8 -}; - -// Decodes UTF-8 encoded Unicode code point at "s". -UnicodeChar DecodeUtf8(const char* s) -{ - UnicodeChar unicodeChar; - int state = s0; - auto start = s; - - do - { - unsigned char byte = *s++; - int type = s_byteTypeTable[byte]; - - if (state == s0) - unicodeChar.code = (0xFF >> type) & byte; - else - unicodeChar.code = (unicodeChar.code << 6) | (byte & 0x3F); - - state = s_transitionTable[state + type]; - - if (state == s1) - { - unicodeChar.code = -1; - return unicodeChar; - } - } while (state != s0); - - unicodeChar.encodingLength = s - start; - - return unicodeChar; -} +// Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de>
+// See http://bjoern.hoehrmann.de/utf-8/decoder/dfa/ for details.
+//
+// Copyright(c) 2016 YamaArashi
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#include <cstdint>
+#include "utf8.h"
+
+static const unsigned char s_byteTypeTable[] =
+{
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 00..1f
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 20..3f
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 40..5f
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 60..7f
+ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, // 80..9f
+ 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, // a0..bf
+ 8,8,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, // c0..df
+ 0xa,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x4,0x3,0x3, // e0..ef
+ 0xb,0x6,0x6,0x6,0x5,0x8,0x8,0x8,0x8,0x8,0x8,0x8,0x8,0x8,0x8,0x8, // f0..ff
+};
+
+const unsigned char s0 = 0 * 12;
+const unsigned char s1 = 1 * 12;
+const unsigned char s2 = 2 * 12;
+const unsigned char s3 = 3 * 12;
+const unsigned char s4 = 4 * 12;
+const unsigned char s5 = 5 * 12;
+const unsigned char s6 = 6 * 12;
+const unsigned char s7 = 7 * 12;
+const unsigned char s8 = 8 * 12;
+
+static const unsigned char s_transitionTable[] =
+{
+ s0,s1,s2,s3,s5,s8,s7,s1,s1,s1,s4,s6, // s0
+ s1,s1,s1,s1,s1,s1,s1,s1,s1,s1,s1,s1, // s1
+ s1,s0,s1,s1,s1,s1,s1,s0,s1,s0,s1,s1, // s2
+ s1,s2,s1,s1,s1,s1,s1,s2,s1,s2,s1,s1, // s3
+ s1,s1,s1,s1,s1,s1,s1,s2,s1,s1,s1,s1, // s4
+ s1,s2,s1,s1,s1,s1,s1,s1,s1,s2,s1,s1, // s5
+ s1,s1,s1,s1,s1,s1,s1,s3,s1,s3,s1,s1, // s6
+ s1,s3,s1,s1,s1,s1,s1,s3,s1,s3,s1,s1, // s7
+ s1,s3,s1,s1,s1,s1,s1,s1,s1,s1,s1,s1, // s8
+};
+
+// Decodes UTF-8 encoded Unicode code point at "s".
+UnicodeChar DecodeUtf8(const char* s)
+{
+ UnicodeChar unicodeChar;
+ int state = s0;
+ auto start = s;
+
+ do
+ {
+ unsigned char byte = *s++;
+ int type = s_byteTypeTable[byte];
+
+ if (state == s0)
+ unicodeChar.code = (0xFF >> type) & byte;
+ else
+ unicodeChar.code = (unicodeChar.code << 6) | (byte & 0x3F);
+
+ state = s_transitionTable[state + type];
+
+ if (state == s1)
+ {
+ unicodeChar.code = -1;
+ return unicodeChar;
+ }
+ } while (state != s0);
+
+ unicodeChar.encodingLength = s - start;
+
+ return unicodeChar;
+}
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