java - (Antlr)如何运行此输入并在终端中获取输出？

Question

我正在尝试在命令行中运行此代码。运行此命令后，我可以在命令行中输入内容

如何运行输入并获取输出？我应该按什么按钮？

import java.io.*;
import org.antlr.runtime.*;

public class ParseMain {
    public static void main(String args[]) throws Exception {
    //ProjLangLexer lexer = new ProjLangLexer(new ANTLRFileStream(args[0]));
    ProjLangLexer lexer = new ProjLangLexer(new ANTLRInputStream(System.in));
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    ProjLangParser parser = new ProjLangParser(tokens);
    parser.input();


    //ScanMain
    Token tok = lexer.nextToken();
    while (tok.getType() != Token.EOF) {
    System.out.println("Lexeme = " + tok.getText() + " Token = " + tok.getType());
        tok = lexer.nextToken();
    }
}

Answer 1

如果在 Windows 命令行中，请尝试按 Ctrl+Z 然后 Enter 来模拟 EOF。如果使用 unix，请尝试 Ctrl+D。