#include <stdio.h>
#include <stdlib.h>

#include "parts/symbol.h"
enum symbol {
    PLUS = 0,
    MINUS,
    LPAREN,
    RPAREN,
    N0, N1,
    END_INPUT,

    EP, E, T, N,
    SYMBOLS_END,
};

size_t total_symbols = SYMBOLS_END;

IMPLEMENT_FUNCPTR(int, symbol_is_terminal, (symbol s), { return s < EP; })
IMPLEMENT_FUNCPTR(int, symbol_is_input_end, (symbol s), { return s == END_INPUT; })
IMPLEMENT_FUNCPTR(int, symbol_is_valid,(symbol s), { return s < SYMBOLS_END; })

#include "parts/grammar.h"
#define PROD(LHS, _, ...) {LHS, (symbol[]){__VA_ARGS__}, sizeof((symbol[]){__VA_ARGS__})/sizeof(symbol)}
static struct production _grammar[] = {
    PROD(EP, ->, E, END_INPUT),
    PROD(E, -->, E, PLUS, T),
    PROD(E, -->, E, MINUS, T),
    PROD(E, -->, T),
    PROD(T, -->, LPAREN, E, RPAREN),
    PROD(T, -->, N),
    PROD(N, -->, N0),
    PROD(N, -->, N1),
};

struct production *grammar = _grammar;
size_t total_productions = sizeof(_grammar)/sizeof(*_grammar);

#include "parts/toklist.h"
static symbol toklist[] = {N0, PLUS, N1, MINUS, N0, END_INPUT};
static symbol *tok = toklist;

symbol toklist_eat() { return *(tok++); } // unsafe
symbol toklist_peek() { return *tok; }    // unsafe

#include "slr-table.c"
#include "util-tables.c"
#include "lr-parser.c"

int main(void)
{
    util_tables_fill();
    table_fill();

    table_print();

    int r = 0;
    r = lr_parser();

    table_free();
    util_tables_free();

    return r;
}