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/*
* HT Editor
* syntax.h
*
* Copyright (C) 2001 Stefan Weyergraf (stefan@weyergraf.de)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __SYNTAX_H__
#define __SYNTAX_H__
#include "common.h"
#include "htio.h"
struct text_pos {
UINT line;
UINT pofs;
};
typedef UINT lexer_state;
typedef UINT lexer_state_set;
typedef UINT lexer_token;
enum lexer_rule_string_type {
LRST_EMPTY,
LRST_STRING,
LRST_REGEX,
LRST_CHARSET,
LRST_WHITESPACE,
LRST_ANYCHAR
};
struct syntax_lexer_rule {
lexer_state_set needstate;
bool need_line_start;
lexer_rule_string_type string_type;
char *string;
lexer_state state;
lexer_token token;
};
/*
* CLASS ht_syntax_lexer
*/
class ht_syntax_lexer: public object {
public:
/* new */
virtual lexer_state getinitstate()=0;
virtual lexer_token geterrortoken()=0;
virtual lexer_token gettoken(char *buf, lexer_state *state, text_pos *p, UINT *len, bool start_of_line, bool only_state_changers)=0;
virtual vcp gettoken_color(lexer_token t)=0;
};
/*
* CLASS ht_lang_syntax_lexer
*/
class ht_lang_syntax_lexer: public ht_syntax_lexer {
protected:
syntax_lexer_rule *lexer_rules;
void **lexer_rules_precompiled;
int lexer_rules_count;
/* new */
void free_lexer_rules();
void set_lexer_rules(syntax_lexer_rule *lr);
public:
void init(syntax_lexer_rule *lexer_rules);
virtual void done();
/* overwritten */
virtual lexer_token gettoken(char *buf, lexer_state *state, text_pos *p, UINT *len, bool start_of_line, bool only_state_changers);
};
/*
* CLASS ht_c_syntax_lexer
*/
class ht_c_syntax_lexer: public ht_lang_syntax_lexer {
protected:
char **c_reserved_sorted;
UINT c_reserved_count;
public:
void init();
virtual void done();
/* overwritten */
virtual lexer_state getinitstate();
virtual lexer_token geterrortoken();
virtual lexer_token gettoken(char *buf, lexer_state *state, text_pos *p, UINT *len, bool start_of_line, bool only_state_changers);
virtual vcp gettoken_color(lexer_token t);
};
char **create_sorted_stringtable(char **table);
#endif /* __SYNTAX_H__ */
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