#include <stdio.h>

#define false 0
#define true 1
_Bool reached_EOF = false;
#define YY_INPUT(buf, result, max_size)                \
	{                                                  \
		int yyc = getchar();                           \
		if (yyc == EOF) {                              \
			reached_EOF = true;                        \
			fprintf(stdout, "EOF");                    \
		} else {                                       \
			fprintf(stdout, "%c", yyc);                \
		}                                              \
		result = (EOF == yyc) ? 0 : (*(buf) = yyc, 1); \
	}

#include "peg.c"

int main(int argc, char** argv) {
	if (argc < 2) {
		fprintf(stderr, "usage: %s filen.fang [output/file]\n", *argv);
		return -1;
	}
	freopen(argv[1], "r", stdin);
	if (!stdin) {
		fprintf(stderr, "file %s not found\n", argv[1]);
		return -2;
	}
	_Bool newline = true;
	if (argc >= 3) {
		freopen(argv[2], "w", stdout);
		if (!stdout) {
			fprintf(stderr, "file %s not found\n", argv[2]);
			return -2;
		}
		newline = false;
	}
	while (yyparse());
	if (newline) printf("\n");
	return !reached_EOF;
}