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annotate src/tokenizer.h @ 381:879a470c6ac3

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author Carl Byington <carl@five-ten-sg.com>
date Tue, 28 Feb 2017 17:02:07 -0800
parents 82886d4dd71f
children 5209e92b4885
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1 /*
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2
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c7fc218686f5 gpl3, block mail to recipients that cannot reply
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3 Copyright (c) 2007 Carl Byington - 510 Software Group, released under
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4 the GPL version 3 or any later version at your choice available at
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5 http://www.gnu.org/licenses/gpl-3.0.txt
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6
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7 */
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8
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9 using namespace std;
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11 struct ltstr {
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12 bool operator()(const char* s1, const char* s2) const {
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13 return strcmp(s1, s2) < 0;
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14 }
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15 };
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17 typedef list<ifstream *> stream_list;
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18 typedef list<const char *> string_list;
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19 typedef set<const char *, ltstr> string_set;
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20 typedef list<int> line_list;
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21
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22 class TOKEN {
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23 stream_list streams;
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24 string_list filenames;
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25 string_set filenamess;
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26 line_list linenumbers;
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27 string_list pending_tokens;
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28 string_set *include_files;
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29 bool pushed;
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30 u_char pushed_char;
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32 void pop();
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33 bool next_char(u_char &c);
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34 void push_char(u_char c);
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35
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36 public:
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37 TOKEN(const char *fn, string_set *includes);
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38 ~TOKEN();
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39 bool include(const char *fn);
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40 const char *next(); // return next token
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41 int nextint();
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42 void skipeol(); // skip to eol
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43 void push(const char *token) {pending_tokens.push_front(token);};
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44 const char *cur_fn() {return filenames.empty() ? "" : filenames.front();};
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45 int cur_line() {return linenumbers.empty() ? 0 : linenumbers.front();};
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46 void token_error(const char *err);
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47 void token_error(const char *fmt, int d, const char *s);
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48 void token_error(const char *fmt, const char *t, const char *h);
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49 void token_error(const char *want, const char *have);
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50 void token_error();
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51 };
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