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#include <stdio.h>ae
#include <stdlib.h>
#include "lr-parser.c"
#include "bin/generated.c"
#include "parts/toklist.h"
enum symbol {
PLUS = 0,
MINUS,
LPAREN,
RPAREN,
N0, N1,
END_INPUT,
EP, E, T, N,
SYMBOLS_END,
};
struct token {
symbol s;
};
static inline struct token *char_to_token(char c)
{
static struct token t;
switch(c) {
case '+': t = (struct token){PLUS}; break;
case '-': t = (struct token){MINUS}; break;
case '(': t = (struct token){LPAREN}; break;
case ')': t = (struct token){RPAREN}; break;
case '0': t = (struct token){N0}; break;
case '1': t = (struct token){N1}; break;
case 0 : t = (struct token){END_INPUT}; break;
default: fprintf(stderr, "ERROR: Unknown character '%c'\n", c); exit(1);
}
return &t;
}
static char *input;
symbol token_sym(struct token *t) { return t->s; }
int token_val(struct token *t) { return 0; }
struct token *toklist_eat() { return char_to_token(*(input++)); } // unsafe
struct token *toklist_peek() { return char_to_token(*input); } // unsafe
int main(int argc, char **argv)
{
if(argc != 2) {
fprintf(stderr, "ERROR: Not enough arguments\n");
return 1;
}
input = argv[1];
printf("INPUT: '%s'\n", input);
printf("OUTPUT: %d\n", lr_parser());
return 0;
}
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