import from github

tools/scaninc/asm_file.h

@@ -0,0 +1,119 @@
+// Copyright(c) 2015-2017 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.
+
+#ifndef ASM_FILE_H
+#define ASM_FILE_H
+
+#include <string>
+#include "scaninc.h"
+
+enum class IncDirectiveType
+{
+    None,
+    Include,
+    Incbin
+};
+
+class AsmFile
+{
+public:
+    AsmFile(std::string path);
+    ~AsmFile();
+    IncDirectiveType ReadUntilIncDirective(std::string& path);
+
+private:
+    char *m_buffer;
+    int m_pos;
+    int m_size;
+    int m_lineNum;
+    std::string m_path;
+
+    int GetChar()
+    {
+        if (m_pos >= m_size)
+            return -1;
+
+        int c = m_buffer[m_pos++];
+
+        if (c == '\r')
+        {
+            if (m_pos < m_size && m_buffer[m_pos++] == '\n')
+            {
+                m_lineNum++;
+                return '\n';
+            }
+            else
+            {
+                FATAL_INPUT_ERROR("CR line endings are not supported\n");
+            }
+        }
+
+        if (c == '\n')
+            m_lineNum++;
+
+        return c;
+    }
+
+    // No newline translation because it's not needed for any use of this function.
+    int PeekChar()
+    {
+        if (m_pos >= m_size)
+            return -1;
+
+        return m_buffer[m_pos];
+    }
+
+    void SkipTabsAndSpaces()
+    {
+        while (m_pos < m_size && (m_buffer[m_pos] == '\t' || m_buffer[m_pos] == ' '))
+            m_pos++;
+    }
+
+    bool MatchIncDirective(std::string directiveName, std::string& path)
+    {
+        int length = directiveName.length();
+        int i;
+
+        for (i = 0; i < length && m_pos + i < m_size; i++)
+            if (directiveName[i] != m_buffer[m_pos + i])
+                return false;
+
+        if (i < length)
+            return false;
+
+        m_pos += length;
+
+        SkipTabsAndSpaces();
+
+        if (GetChar() != '"')
+            FATAL_INPUT_ERROR("no path after \".%s\" directive\n", directiveName.c_str());
+
+        path = ReadPath();
+
+        return true;
+    }
+
+    std::string ReadPath();
+    void SkipEndOfLineComment();
+    void SkipMultiLineComment();
+    void SkipString();
+};
+
+#endif // ASM_FILE_H