--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/LexerScanner.h Sun Feb 02 17:06:39 2014 +0200
@@ -0,0 +1,114 @@
+/*
+ Copyright 2012-2014 Santeri Piippo
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ 3. The name of the author may not be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef BOTC_LEXER_SCANNER_H
+#define BOTC_LEXER_SCANNER_H
+
+#include <climits>
+#include "Main.h"
+
+class LexerScanner
+{
+ types:
+ struct PositionInfo
+ {
+ char* pos;
+ char* line_break_pos;
+ int line;
+ };
+
+ // Flags for check_string()
+ enum
+ {
+ FCheckWord = (1 << 0), // must be followed by whitespace
+ FCheckPeek = (1 << 1), // don't advance cursor
+ };
+
+ public:
+ static inline bool IsSymbolChar (char c, bool allownumbers)
+ {
+ if (allownumbers && (c >= '0' && c <= '9'))
+ return true;
+
+ return (c >= 'a' && c <= 'z') ||
+ (c >= 'A' && c <= 'Z') ||
+ (c == '_');
+ }
+
+ LexerScanner (FILE* fp);
+ ~LexerScanner();
+ bool GetNextToken();
+ String ReadLine();
+
+ inline const String& GetTokenText() const
+ {
+ return mTokenText;
+ }
+
+ inline int GetLine() const
+ {
+ return mLine;
+ }
+
+ inline int GetColumn() const
+ {
+ return mPosition - mLineBreakPosition;
+ }
+
+ inline EToken GetTokenType() const
+ {
+ return mTokenType;
+ }
+
+ static String GetTokenString (EToken a);
+
+ private:
+ char* mData;
+ char* mPosition;
+ char* mLineBreakPosition;
+ String mTokenText,
+ mLastToken;
+ EToken mTokenType;
+ int mLine;
+
+ bool CheckString (const char* c, int flags = 0);
+
+ // Yields a copy of the current position information.
+ PositionInfo GetPosition() const;
+
+ // Sets the current position based on given data.
+ void SetPosition (const PositionInfo& a);
+
+ // Skips one character
+ void Skip();
+
+ // Skips many characters
+ void Skip (int chars);
+};
+
+#endif // BOTC_LEXER_SCANNER_H