bianyi.c

简单的词法分析器在Linux上用C语言实现

/*
 ============================================================================
 Name        : bianyi.c
 Author      : xiaohe
 Version     :
 Copyright   : Your copyright notice
 Description : Hello World in C, Ansi-style
 ============================================================================
 */

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


#include"option.h"
#include"scan.h"

int main(int argc,char *argv[])
{
	scanner_init();
/*
	if(argc<2)
	{
		fprintf(stderr,"Please input the name of the source file!\n");
		return EXIT_SUCCESS;
	}
*/
	if((source=fopen("source","r"))==NULL)
	{
		fprintf(stderr,"Cannot open source file %s .\n",argv[1]);
		return EXIT_SUCCESS;
	}

	while(!feof(source))
	{
		scanner();
	}
	show_ident();
	printf("\n\n");
	show_keywords();
	printf("\n\n");
	show_number();
	printf("\n\n");
	show_operator();
	return EXIT_SUCCESS;
}