test.java

用java写的语句级语法分析器。用于一些软件对输入的语句进行语法分析

package Expression;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class test {

	static String abc;
	public test() throws IOException
	{
		//abc="a1 = ( b1 + 2) + 3/5*3*6- ddd / 333";
		boolean tt = true ;
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String str = "";
		while (tt){
			System.out.println("Enter your value:");
			str = br.readLine();
			if (str.toUpperCase().equals( "EXIT")){
				return;
			}
			if (!str.equals("")){
				ConstituteTree tree =new ConstituteTree(str);
				tree.Gen();
			}
		}
	}
	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
	   test t = new test();	
	}
}