--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/lexer_scanner.h Sat Jan 11 22:36:31 2014 +0200
@@ -0,0 +1,107 @@
+/*
+ Copyright (c) 2013-2014, 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:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ * 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.
+
+ * Neither the name of the <organization> nor the
+ names of its contributors may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 <COPYRIGHT HOLDER> 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 IRIS_SCANNER_H
+#define IRIS_SCANNER_H
+
+#include <climits>
+#include "main.h"
+
+class lexer_scanner
+{
+ types:
+ struct position_info
+ {
+ char* pos;
+ char* line_break_pos;
+ int line;
+ };
+
+ // Flags for check_string()
+ enum
+ {
+ f_check_word = (1 << 0), // must be followed by whitespace
+ f_check_peek = (1 << 1), // don't advance cursor
+ };
+
+ public:
+ static inline bool is_symbol_char (char c)
+ {
+ return (c >= 'a' && c <= 'z') ||
+ (c >= 'A' && c <= 'Z') ||
+ (c == '_');
+ }
+
+ lexer_scanner (FILE* fp);
+ ~lexer_scanner();
+ bool get_next_token();
+
+ inline const string& get_token_text() const
+ {
+ return m_token_text;
+ }
+
+ inline int get_line() const
+ {
+ return m_line;
+ }
+
+ inline int get_column() const
+ {
+ return m_ptr - m_line_break_pos;
+ }
+
+ inline e_token get_e_token() const
+ {
+ return m_e_token;
+ }
+
+ static string get_token_string (e_token a);
+
+ private:
+ char* m_data,
+ * m_ptr,
+ * m_line_break_pos;
+ string m_token_text,
+ m_last_token;
+ e_token m_e_token;
+ int m_line;
+
+ bool check_string (const char* c, int flags = 0);
+
+ // Yields a copy of the current position information.
+ position_info get_position() const;
+
+ // Sets the current position based on given data.
+ void set_position (const position_info& a);
+};
+
+#endif // IRIS_SCANNER_H
+