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comparison src/tokenizer.h @ 0:48d06780cf77

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initial version
author Carl Byington <carl@five-ten-sg.com>
date Tue, 13 May 2008 14:03:10 -0700
parents
children 180d26aa2a17
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-1:000000000000 0:48d06780cf77
1 /*
2
3 Copyright (c) 2007 Carl Byington - 510 Software Group, released under
4 the GPL version 3 or any later version at your choice available at
5 http://www.gnu.org/licenses/gpl-3.0.txt
6
7 */
8
9
10 using namespace std;
11
12 struct ltstr {
13 bool operator()(char* s1, char* s2) const {
14 return strcmp(s1, s2) < 0;
15 }
16 };
17
18 typedef list<ifstream *> stream_list;
19 typedef list<char *> string_list;
20 typedef set<char *, ltstr> string_set;
21 typedef list<int> line_list;
22
23 class TOKEN {
24 stream_list streams;
25 string_list filenames;
26 string_set filenamess;
27 line_list linenumbers;
28 string_list pending_tokens;
29 string_set *include_files;
30 bool pushed;
31 u_char pushed_char;
32
33 void pop();
34 bool next_char(u_char &c);
35 void push_char(u_char c);
36
37 public:
38 TOKEN(char *fn, string_set *includes);
39 ~TOKEN();
40 bool include(char *fn);
41 char *next(); // return next token
42 int nextint();
43 void skipeol(); // skip to eol
44 void push(char *token) {pending_tokens.push_front(token);};
45 const char *cur_fn() {return filenames.empty() ? "" : filenames.front();};
46 int cur_line() {return linenumbers.empty() ? 0 : linenumbers.front();};
47 void token_error(const char *err);
48 void token_error(const char *fmt, int d, const char *s);
49 void token_error(const char *fmt, const char *t, const char *h);
50 void token_error(const char *want, const char *have);
51 void token_error();
52 };
53