From 8237e29a164211eb2ec4cd161eb4183cc1947fee Mon Sep 17 00:00:00 2001 From: Cheng Hann Gan Date: Thu, 9 Sep 2021 19:22:48 -0400 Subject: Defined more in-dungeon structs and enums (#53) * Defined DungeonEntity * Rename EntityType enums * Revert EntityType rename * Defined more in-dungeon structs and enums * Added more dungeon global structs/enums * Prefixed dungeonGlobalData with g * Fixed compile errors * Removed some CRLFs * Fixed compile after merge * Revert Makefile * Rename DungeonEntityData.entityType Co-authored-by: Seth Barberee * Renamed symbols per PR comments Co-authored-by: Cheng Hann Gan Co-authored-by: Seth Barberee --- tools/preproc/asm_file.cpp | 1064 ++++++++++++++++++++++---------------------- 1 file changed, 532 insertions(+), 532 deletions(-) (limited to 'tools/preproc/asm_file.cpp') diff --git a/tools/preproc/asm_file.cpp b/tools/preproc/asm_file.cpp index ce0bf31..7756cad 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 -#include -#include -#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(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 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 +#include +#include +#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(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 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"); +} -- cgit v1.2.3