访问.class文件中的符号表 [英] Accessing symbol table in .class files

问题描述

对于Java中的任意代码库，我想(概念上)创建符号和类型之间的USES和USED-BY关系的表.符号表包含我需要的信息.但是，编写前端似乎是一项艰巨的任务，并且有可能将我的项目变成更大的子项目.在我看来，没有理由，因为字节码，Java .class文件在其中必须包含每个类的这样一个符号表，以便它可以解析类型和引用.

For an arbitrary code base in Java, I want to create a table (conceptually) of USES and USED-BY relations between symbols and types. A symbol table has the information I need. However, writing a front end seems like a huge task and threatens to turn my project into an even bigger sub-project. There's no reason for this, it seems to me ,because bytecode, the Java .class file necessarily contains within it such a symbol table for each class so that it can resolve types and references.

我的问题是-

如何以编程方式访问一组 .class文件，以便我可以创建所需的USES/USED-BY表?已 任何人都已经做到了(肯定的答案是肯定的)并且是工具 要这样做还不是图书馆?

How can I programmaticly access the symbol table inside a set of .class files so that I can create the USES / USED-BY table I want? Has anyone already done this (surely the answer is yes) and is the tool to do this not already a library ?

推荐答案

看看 ASM字节码操作框架 .此教程具有从字节码中检索依赖项的示例.尽管可以使用最近引入的 RemappingClassAdapter .

Take a look at ASM bytecode manipulation framework. This tutorial has an example of dependencies retrieval from the bytecode. Though it can be significantly simplified if you use more recently introduced RemappingClassAdapter.

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