javaparser - java源码分析修改框架

javaparser 包含一组实现具有高级分析功能的 Java 1.0 - Java 15 Parser 的库。这包括 Java 13 的预览功能，Java 14 预览功能正在进行中。

Analyse: 编写可以遍历 Java 源代码并查找您感兴趣的模式的代码。
Transform: 构建的工具不仅可以识别代码模式，还可以更改它们。
Generate: 聪明点，不要花时间编写样板，生成它！

使用 demo工程: 从官方demo fork的工程里可以看到大部分使用示例（对应于官方指导文档里使用说明）。

查找指定方法调用所在的行数、函数名、类名

示例代码:

public static void main(String[] args) throws Exception {CompilationUnit cu = StaticJavaParser.parse(new FileInputStream(FILE_PATH));VoidVisitor<Void> methodCallVisitor = new MethodCallPrinter();methodCallVisitor.visit(cu, null);}private static class MethodCallPrinter extends VoidVisitorAdapter<Void> {@Overridepublic void visit(MethodCallExpr mc, Void arg) {super.visit(mc, arg);Range range = mc.getRange().orElse(Range.range(-1, -1, -1, -1));int startLine = range.begin.line;int endLine = range.end.line;MethodDeclaration methodDeclaration = funcCalledByMethod(mc);ClassOrInterfaceDeclaration classDeclaration = funcCalledByClass(methodDeclaration);System.out.printf("Method call Printed -> method %s called in %s.%s() line [%d, %d]\n",mc.getName().getIdentifier(), classDeclaration == null ? "" : classDeclaration.getName().getIdentifier(),methodDeclaration == null ? "" : methodDeclaration.getName().getIdentifier(), startLine, endLine);}

执行结果:

Method call Printed -> method split called in ReversePolishNotation.calc() line [25, 25]
Method call Printed -> method pop called in ReversePolishNotation.calc() line [33, 33]
Method call Printed -> method pop called in ReversePolishNotation.calc() line [34, 34]
Method call Printed -> method push called in ReversePolishNotation.calc() line [35, 35]
Method call Printed -> method pop called in ReversePolishNotation.calc() line [38, 38]
Method call Printed -> method pop called in ReversePolishNotation.calc() line [39, 39]
Method call Printed -> method push called in ReversePolishNotation.calc() line [40, 40]
Method call Printed -> method pop called in ReversePolishNotation.calc() line [43, 43]
Method call Printed -> method pop called in ReversePolishNotation.calc() line [44, 44]
Method call Printed -> method push called in ReversePolishNotation.calc() line [45, 45]
Method call Printed -> method pop called in ReversePolishNotation.calc() line [48, 48]
Method call Printed -> method pop called in ReversePolishNotation.calc() line [49, 49]
Method call Printed -> method push called in ReversePolishNotation.calc() line [50, 50]
Method call Printed -> method valueOf called in ReversePolishNotation.calc() line [53, 53]
Method call Printed -> method push called in ReversePolishNotation.calc() line [53, 53]
Method call Printed -> method of called in ReversePolishNotation.calc() line [28, 28]
Method call Printed -> method forEach called in ReversePolishNotation.calc() line [28, 55]
Method call Printed -> method pop called in ReversePolishNotation.calc() line [56, 56]

查找所在函数的递归函数:

/*** 查找节点在哪个函数里调用** @param node 节点* @return 函数声明*/private MethodDeclaration funcCalledByMethod(@Nullable Node node) {if (node == null) {return null;}Node parentNode = node.getParentNode().get();if (parentNode instanceof MethodDeclaration) {return (MethodDeclaration) parentNode;} else {return funcCalledByMethod(parentNode);}}

查找所在类的递归函数:

        /*** 查找节点在哪个类或接口里** @param node 节点* @return 类或接口声明*/private ClassOrInterfaceDeclaration funcCalledByClass(@Nullable Node node) {if (node == null) {return null;}Node parentNode = node.getParentNode().get();if (parentNode instanceof ClassOrInterfaceDeclaration) {return (ClassOrInterfaceDeclaration) parentNode;} else {return funcCalledByClass(parentNode);}}

参考文献

http://javaparser.org/

https://github.com/javaparser/javaparser

https://leanpub.com/javaparservisited

https://github.com/BlankLun/javaparser-visited

javaparser - java源码分析修改框架相关推荐

【OkHttp】OkHttp 源码分析 ( 网络框架封装 | OkHttp 4 迁移 | OkHttp 建造者模式 )
OkHttp 系列文章目录 [OkHttp]OkHttp 简介 ( OkHttp 框架特性 | Http 版本简介 ) [OkHttp]Android 项目导入 OkHttp ( 配置依赖 | 配置 ...
【Java源码分析】Java8的HashMap源码分析
Java8中的HashMap源码分析源码分析 HashMap的定义字段属性构造函数 hash函数 comparableClassFor,compareComparables函数 tableSiz ...
SpringMVC源码分析_框架原理图
SpringMVC源码分析_框架原理图 ...
Activiti源码分析（框架、核心类。。。）
Activiti源码分析(框架.核心类...) 目录概述 activiti源码分析(一)设计模式总结: 相关工具如下: 分析: 小结: 参考资料和推荐阅读 LD is tigger foreve ...
【Java源码分析】LinkedHashSet和HashSet源码分析
类的定义 public class HashSet<E> extends AbstractSet<E> implements Set<E>, Cloneable, ...
java 源码分析_Java 源代码编译成 Class 文件的过程分析
原标题:Java 源代码编译成 Class 文件的过程分析在上篇文章< Java三种编译方式:前端编译 JIT编译 AOT编译 >中了解到了它们各有什么优点和缺点,以及前端编译+JIT编 ...
Java源码分析之HashMap(JDK1.8)
一.HashMap概述 HashMap是常用的Java集合之一,是基于哈希表的Map接口的实现.与HashTable主要区别为不支持同步和允许null作为key和value.由于HashMap不是线程 ...
Scrapy-redis 源码分析及框架使用
From:https://blog.csdn.net/weixin_37947156/article/details/75044971 From:https://cuiqingcai.com/6058 ...
ThinkPHP5.1.x 框架源码分析之框架的灵魂
一.类的自动加载初始框架的灵魂,类的自动加载为什么说是框架灵魂呢,一般框架都会有类的自动加载,当引入文件很多的时候,就会需要用到.这一个也是很多人想去阅读源码时卡住的点源码阅读打开到入口文件 ...
【Java源码分析】Java8的ArrayList源码分析
Java8的ArrayList源码分析源码分析 ArrayList类的定义字段属性构造函数 trimToSize()函数 Capacity容量相关的函数,比如扩容 List大小和是否为空 con ...