zoukankan      html  css  js  c++  java
  • Build Antlr4 projects with eclipse java project template.

    from:https://shijinglu.wordpress.com/2015/01/22/build-antlr4-projects-with-eclipse-java-project-template/

    Before taking any action, remember to install antlr4 plugin for eclipse, it can be easily found from “Eclipse Marketplace”.
    1. Create an antlr4 project. This will create an simple “Hello” antlr4 project.

    word-image

    word-image
    2. Add java project facet to the project.

    word-image

    word-image

    word-image

    3. Eclipse will automatically rebuild the project, see messages in the Console, pay attention to the default antlr-4.4-complete.jar path.

    word-image

    4. Or you can move the antlr4 jar file to your comfortable directory and add it the eclipse build path from therein.

    word-image

    word-image

    5. Add destination folder of generated java files to the project as source folder.

    word-image

    word-image

    6. Add some code to test this project, <>

    word-image

    word-image

    // 
    // import ANTLR's runtime libraries
    import org.antlr.v4.runtime.*;
    import org.antlr.v4.runtime.tree.*;
    public class HelloRunner {
    	public static void main( String[] args) throws Exception {
    		// create a CharStream that reads from standard input
    		ANTLRInputStream input = new ANTLRInputStream( System.in);
    		// create a lexer that feeds off of input CharStream
    		HelloLexer lexer = new HelloLexer(input);
    		// create a buffer of tokens pulled from the lexer
    		CommonTokenStream tokens = new CommonTokenStream(lexer);
    		// create a parser that feeds off the tokens buffer
    		HelloParser parser = new HelloParser(tokens);
    		ParseTree tree = parser.r(); // begin parsing at rule 'r'
    		System.out.println(tree.toStringTree(parser)); // print LISP-style tree
    	}
    }
    

    7. Runt this HelloRunner.java as java application

    word-image

    word-image

  • 相关阅读:
    uva 12034 Race
    计算机基础之计算机硬件软件数据结构
    Project Perfect让Swift在server端跑起来-Perfect in Visual Studio Code (四)
    关于自己定义转场动画,我都告诉你。
    Shell编程入门
    CODEVS 1029 遍历问题
    【VBA研究】工作表自己主动筛选模式检測
    卸载MySQL 5.0
    操作系统(二)进程控制
    前端面试题
  • 原文地址:https://www.cnblogs.com/dfyz/p/4660754.html
Copyright © 2011-2022 走看看