libhl/include/hl.h

#ifndef HL_H_

#include <stdio.h>
#include <uthash.h>
#include <ctype.h>
#include <string.h>
#include <stdbool.h>
#include "chad.h"
#include "regex.h"

// -------------------
// ### Definitions ###
// -------------------

typedef enum {
	KEYSYMBOL,
	KEYWORD,
	MATCH,
	REGION
} token_type_t;

typedef void (*attribute_callback_t) (const char * string,
                                      const int    length,
                                            void * attributes);

typedef struct {
	char                 * key;
	attribute_callback_t   callback;
	UT_hash_handle         hh;
} display_t;

typedef struct {
	void              * attributes;
	struct hl_group_t * link;
} hl_group_t;

typedef struct {
	hl_group_t   * hl;
	regex_t      * syntax;
	token_type_t   t;
	char           _pad[4];
} token_t;

extern vector_t    token_table;
extern display_t * display_table;

extern hl_group_t * keyword_hl;
extern hl_group_t * preprocessor_hl;
extern hl_group_t * symbol_hl;

extern hl_group_t * special_hl;
extern hl_group_t * control_hl;
extern hl_group_t * keyword_hl;
extern hl_group_t * block_hl;
extern hl_group_t * separator_hl;
extern hl_group_t * operator_hl;
extern hl_group_t * comment_hl;
extern hl_group_t * string_literal_hl;

extern void new_display_mode(display_t * mode);
extern int free_token(token_t * token);
extern int append_token(token_t * token);

// TODO: ALIGN PROPERLY...

extern token_t * new_symbol_token(const char         * const c,
                                        hl_group_t   * const g);

extern int       new_symbol_tokens(const char       * const *     symbols,
                                         hl_group_t * const             g);

extern int       new_char_tokens(const char       *              str,
                                       hl_group_t * const          g);

extern token_t * new_keyword_token(const char         * const word,
                                         hl_group_t   * const    g);

extern int       new_keyword_tokens(const char       * const * words,
                                          hl_group_t * const   g);

extern token_t * new_token(const char         * const word,
                           const token_type_t            t,
                                 hl_group_t   * const    g);

extern token_t * new_region_token(const char       * start,
                                  const char       *   end,
                                      hl_group_t *       g);

// TODO: ALIGN PROPERLY...

extern int token_fits(const token_t * const          token,
                      const char    * const             to,
                      const int              string_offset,
                      const bool            is_start_of_line,
                            int     *         match_offset);

extern void render_string(const char * const string,
                          const char * const mode);

extern int hl_init(void);
extern int hl_deinit(void);

#define HL_H_
#endif