antlr4入门学习

(一)idea配置ANTLR plugin
  https://blog.dgunia.de/2017/10/26/creating-and-testing-an-antlr-parser-with-intellij-idea-or-android-studio/
  
  https://qiita.com/kazy/items/ad99142111bba2f0e708(kotlin版)
  
(二)简单例子
--Hello.g4
grammar Hello;
main: 'Hello ' name '!';
name: ANY+;
ANY: .;


--Hello.kt
package antlrdemo

import com.huawei.antr.*
import org.antlr.v4.runtime.CommonTokenStream
import org.antlr.v4.runtime.CharStreams

fun main(args: Array<String>) {
    val text = "Hello world!"
    val source = CharStreams.fromString(text)
    val lexer = HelloLexer(source)
    val tokenStream = CommonTokenStream(lexer)
    val parser = HelloParser(tokenStream)
    val name = parser.main().name().text
    println(name)
}

(三)问题
(1)Caused by: java.io.InvalidClassException: org.antlr.v4.runtime.atn.ATN; Could not deserialize ATN with UUID 59627784-3be5-417a-b9eb-8131a7286089 (expected aadb8d7e-aeef-4415-ad2b-8204d6cf042e or a legacy UUID).
ANTLR plugin版本和项目中maven依赖的antlr版本不一致
https://www.cnblogs.com/dsj2016/p/9575712.html

An arithmetic expressions evaluator with Kotlin and ANTLR4
https://flavluc.github.io/blog/kotlin-antlr/

ANTLR4 Language Target, Runtime for Go
https://github.com/antlr/antlr4/blob/master/doc/go-target.md