2 * Copyright 2007 Adrian Thurston <thurston@complang.org>
5 /* This file is part of Ragel.
7 * Ragel is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * Ragel is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Ragel; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 #include "parsedata.h"
36 extern char *Parser_lelNames[];
40 Scanner( const char *fileName, istream &input,
41 Parser *inclToParser, char *inclSectionTarg,
42 int includeDepth, bool importMachines )
44 fileName(fileName), input(input),
45 inclToParser(inclToParser),
46 inclSectionTarg(inclSectionTarg),
47 includeDepth(includeDepth),
48 importMachines(importMachines),
50 line(1), column(1), lastnl(0),
51 parser(0), ignoreSection(false),
52 parserExistsError(false),
57 bool duplicateInclude( char *inclFileName, char *inclSectionName );
59 /* Make a list of places to look for an included file. */
60 char **makeIncludePathChecks( const char *curFileName, const char *fileName, int len );
61 std::ifstream *tryOpenInclude( char **pathChecks, long &found );
68 void token( int type, char *start, char *end );
69 void token( int type, char c );
70 void token( int type );
71 void processToken( int type, char *tokdata, int toklen );
72 void directToParser( Parser *toParser, const char *tokFileName, int tokLine,
73 int tokColumn, int type, char *tokdata, int toklen );
75 void importToken( int type, char *start, char *end );
76 void pass( int token, char *start, char *end );
83 ostream &scan_error();
88 char *inclSectionTarg;
92 /* For import parsing. */
96 static const int max_tokens = 32;
97 int token_data[max_tokens];
98 char *token_strings[max_tokens];
99 int token_lens[max_tokens];
101 /* For section processing. */
104 int word_len, lit_len;
106 /* For character scanning. */
113 /* Set by machine statements, these persist from section to section
114 * allowing for unnamed sections. */
118 /* This is set if ragel has already emitted an error stating that
119 * no section name has been seen and thus no parser exists. */
120 bool parserExistsError;
122 /* This is for inline code. By default it is on. It goes off for
123 * statements and values in inline blocks which are parsed. */
126 /* Keeps a record of the previous token sent to the section parser. */
130 #endif /* _RLSCAN_H */