120 lines
3.0 KiB
C
120 lines
3.0 KiB
C
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// Copyright(c) 2015-2017 YamaArashi
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#ifndef ASM_FILE_H
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#define ASM_FILE_H
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#include <string>
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#include "scaninc.h"
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enum class IncDirectiveType
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{
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None,
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Include,
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Incbin
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};
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class AsmFile
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{
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public:
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AsmFile(std::string path);
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~AsmFile();
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IncDirectiveType ReadUntilIncDirective(std::string& path);
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private:
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char *m_buffer;
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int m_pos;
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int m_size;
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int m_lineNum;
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std::string m_path;
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int GetChar()
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{
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if (m_pos >= m_size)
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return -1;
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int c = m_buffer[m_pos++];
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if (c == '\r')
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{
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if (m_pos < m_size && m_buffer[m_pos++] == '\n')
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{
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m_lineNum++;
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return '\n';
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}
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else
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{
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FATAL_INPUT_ERROR("CR line endings are not supported\n");
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}
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}
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if (c == '\n')
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m_lineNum++;
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return c;
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}
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// No newline translation because it's not needed for any use of this function.
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int PeekChar()
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{
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if (m_pos >= m_size)
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return -1;
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return m_buffer[m_pos];
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}
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void SkipTabsAndSpaces()
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{
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while (m_pos < m_size && (m_buffer[m_pos] == '\t' || m_buffer[m_pos] == ' '))
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m_pos++;
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}
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bool MatchIncDirective(std::string directiveName, std::string& path)
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{
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int length = directiveName.length();
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int i;
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for (i = 0; i < length && m_pos + i < m_size; i++)
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if (directiveName[i] != m_buffer[m_pos + i])
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return false;
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if (i < length)
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return false;
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m_pos += length;
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SkipTabsAndSpaces();
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if (GetChar() != '"')
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FATAL_INPUT_ERROR("no path after \".%s\" directive\n", directiveName.c_str());
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path = ReadPath();
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return true;
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}
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std::string ReadPath();
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void SkipEndOfLineComment();
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void SkipMultiLineComment();
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void SkipString();
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};
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#endif // ASM_FILE_H
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