asm: lexer implementation.

src/as/as.c

@@ -0,0 +1,54 @@
+/* as.c
+ *
+ *   Copyright (C) 2012   Henrik Hautakoski <henrik@fiktivkod.org>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ *   MA 02110-1301, USA.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include "lexer.h"
+
+int usage(char *program) {
+
+	fprintf(stderr, "Usage: %s <string>\n", program);
+	return -1;
+}
+
+int main(int argc, char **argv) {
+
+	FILE *fd;
+	struct lexer lex;
+
+	if (argc < 2)
+		return usage(argv[0]);
+
+	fd = fopen(argv[1], "r");
+	if (fd == NULL)
+		return -1;
+
+	lexer_init(&lex, fd);
+
+	do {
+		if (lexer_get_next(&lex) < 0)
+			break;
+
+		lexer_print_token(&lex.token);
+	} while(lex.token.type != TOKEN_EOI);
+
+
+	fclose(fd);
+	return 0;
+}