syntax.h

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/*
 *      HT Editor
 *      syntax.h
 *
 *      Copyright (C) 1999-2002 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"
#include "htobj.h"

#define HT_HTML_SYNTAX_LEXER

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_STRING_EXPECT,
        LRST_REGEX,
        LRST_CHARSET,
        LRST_WHITESPACE,
        LRST_QSTRING,                   /* '[^']*' */
        LRST_DQSTRING,                  /* "[^"]*" */
//     LRST_DQSTRING2,          /* "([^"]|\")*" */
        LRST_ANYCHAR,
        LRST_IDENTIFIER
};

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 void config_changed();
        virtual vcp getcolor_syntax(UINT pal_index)=0;
        virtual lexer_state getinitstate()=0;
        virtual lexer_token geterrortoken()=0;
        virtual char *getname()=0;
        virtual lexer_token gettoken(void *buf, UINT buflen, text_pos p, bool start_of_line, lexer_state *ret_state, UINT *ret_len)=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(void *buf, UINT buflen, text_pos p, bool start_of_line, lexer_state *ret_state, UINT *ret_len);
};

/*
 *      CLASS ht_c_syntax_lexer
 */

class ht_c_syntax_lexer: public ht_lang_syntax_lexer {
protected:
        char **c_reserved_sorted;
        UINT c_reserved_count;

        palette c_pal;
        
        virtual void config_changed();
                        void reloadpalette();
public:
                        void init();
        virtual void done();
/* overwritten */
        virtual vcp getcolor_syntax(UINT pal_index);
        virtual lexer_state getinitstate();
        virtual lexer_token geterrortoken();
        virtual char *getname();
        virtual lexer_token gettoken(void *buf, UINT buflen, text_pos p, bool start_of_line, lexer_state *ret_state, UINT *ret_len);
        virtual vcp gettoken_color(lexer_token t);
};

#ifdef HT_HTML_SYNTAX_LEXER
/*
 *      CLASS ht_html_syntax_lexer
 */

class ht_html_syntax_lexer: public ht_lang_syntax_lexer {
protected:
        char **html_reserved_sorted;
        UINT html_reserved_count;

        palette html_pal;
        
        virtual void config_changed();
                        void reloadpalette();
public:
                        void init();
        virtual void done();
/* overwritten */
        virtual vcp getcolor_syntax(UINT pal_index);
        virtual lexer_state getinitstate();
        virtual lexer_token geterrortoken();
        virtual char *getname();
        virtual lexer_token gettoken(void *buf, UINT buflen, text_pos p, bool start_of_line, lexer_state *ret_state, UINT *ret_len);
        virtual vcp gettoken_color(lexer_token t);
};
#endif

char **create_sorted_stringtable(char **table);

/*
 *      syntax palette
 */

#define palkey_syntax_default                                           "c/default"

#define palidx_syntax_whitespace                       0
#define palidx_syntax_comment                          1
#define palidx_syntax_identifier                       2
#define palidx_syntax_reserved                         3
#define palidx_syntax_intnum                           4
#define palidx_syntax_floatnum                         5
#define palidx_syntax_string                           6
#define palidx_syntax_char                             7
#define palidx_syntax_symbol                           8
#define palidx_syntax_preprocess                                        9
#define palidx_syntax_meta                             10

#endif /* __SYNTAX_H__ */

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