main.c

语法分析程序,使用是递归子程序法.自己写的程序,学习

/*
 * Author: zhangdi
 * Date: 2008-11-10
 * Description:main function
 */
#include <stdio.h>
#include <stdlib.h>
#include "global.h"
#include "lexer.h"
#include "error.h"
#include "init.h"
#include "symbol.h"
#include "token.h"
#include "parser.h"


int main(int args, char *argv[])
{
    char * filename;
    /* get source file name */
    //filename = "ttt.c";
    filename = argv[1];
    if (args < 1)
    {
        printf("Please enter your source file name!");
        exit(2);
    }

    /* open program source file */
    if ((fp = fopen(filename, "rt")) == NULL)
    {
        fprintf(stderr, "ERROR: Can't open source file!\n");
        exit(-1);
    }
    init();

    parse();

    printf("lexer is ok!");

    /* display symbol table */
    symtabledisplay();
    /* display token table */
    tokensdisplay();

    fclose(fp);
    return 0;
}