main.cpp

使用C++实现的Java语言子集词法、语法、语义分析器

#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include "constant.h"
#include "syntax.h"

using namespace std;

int main(int argc, char * argv[])
{
    char fn_in[MAX_LINE];   //输入文件名（由词法分析器生成的“*_lex.txt”文件）
    char fn_syn[MAX_LINE]; //输出语法树文件名
    char fn_asm[MAX_LINE];  //输出汇编程序文件名
    char fn_ers[MAX_LINE];  //输出错误信息文件名
    Syntax * syn;

	cout << "Java (Subset) To ASM by Lin Jian" << endl;
    if (argc == 1)
    {
        cout << "Input file name: ";
        cin >> fn_in;
    }
    else
    {
        strcpy(fn_in, argv[1]);
        cout << "File name: " << fn_in << endl;
    }
    strcpy(fn_syn, fn_in);
    strcat(fn_syn, "_syn.txt");
    strcpy(fn_asm, fn_in);
    strcat(fn_asm, "_asm.txt");
    strcpy(fn_ers, fn_in);
    strcat(fn_ers, "_ers.txt");

    syn = new Syntax(fn_in, fn_syn, fn_asm, fn_ers);
    if (syn->Ready())
    {
        syn->MakeTree();
        syn->WriteAsm();
    }
    else
    {
        cout << "File not found or that is an empty file." << endl;
    }
    delete syn;

	return 0;
}