mcc/parser.h at master · szoftveres/mcc · GitHub

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#ifndef _PARSER_H_
#define _PARSER_H_

#include "lex.h"

typedef struct sym_s {
    char                *name;
    int                 lbl;
    int                 dist;
    struct sym_s        *next;
} sym_t;


typedef struct parser_s {
    lex_instance_t      *lex;
    sym_t               *variables;
    sym_t               *returns;
    sym_t               *breaks;
    sym_t               *continues;
    int                 lbl;
} parser_t;


typedef enum id_obj_e {
    RC_NONE     = 0,
    RC_ADDRESS  = 1,
    RC_VARIABLE = 2,
    RC_FUNCTION = 3
} id_obj_t;


int new_label (parser_t *parser);
void sym_dist_inc (parser_t *parser, int b);
void sym_dist_dec (parser_t *parser, int b);


sym_t* sym_create_lbl (int lbl);
sym_t* sym_create_name (const char* name);
void sym_push (sym_t** stack, sym_t *sym);
void sym_pop (sym_t** stack);
int sym_dist_top (sym_t** stack);
int sym_dist_name (sym_t** stack, const char* name, int *dist);
int sym_lbl_top (sym_t** stack);


parser_t *parser_create (int max_symbol_length);
void parser_destroy (parser_t *parser);

void program (parser_t *parser);


#endif