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#include "parse.h"
#include <stdio.h>
static void unexpected(const Token *tok);
static const Token *keyword_fn(const Token *tok);
static const Token *keyword_var(const Token *tok);
static const Token *keyword_const(const Token *tok);
int parse(const Token *tok)
{
while (tok != NULL && tok->type != TOK_NONE) {
switch (tok->type) {
case TOK_KW_FN:
tok = keyword_fn(tok + 1);
break;
case TOK_KW_VAR:
tok = keyword_var(tok + 1);
break;
case TOK_KW_CONST:
tok = keyword_const(tok + 1);
break;
default:
unexpected(tok);
return 1;
}
}
return 0;
}
static void unexpected(const Token *tok)
{
fprintf(stderr, "unexpected %s %s%s%sat %u:%u\n",
token_type_str(tok->type),
(tok->s != NULL) ? "(" : "",
(tok->s != NULL) ? tok->s : "",
(tok->s != NULL) ? ") " : "",
tok->line, tok->column);
}
static const Token *keyword_fn(const Token *tok)
{
return tok;
}
static const Token *keyword_var(const Token *tok)
{
return tok;
}
static const Token *keyword_const(const Token *tok)
{
return tok;
}
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