org.objectweb.asm.tree.analysis.package.html Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of asm-analysis Show documentation

Static code analysis API of ASM, a very small and fast Java bytecode manipulation framework

There is a newer version: 9.7.1





  Package org.objectweb.asm.tree.analysis




Provides a framework for static code analysis based on the asm.tree package.



Basic usage:


ClassReader classReader = new ClassReader(bytecode);
ClassNode classNode = new ClassNode();
classReader.accept(classNode, ClassReader.SKIP_DEBUG);

for (MethodNode method : classNode.methods) {
  if (method.instructions.size() > 0) {
    Analyzer analyzer = new Analyzer(new BasicInterpreter());
    analyzer.analyze(classNode.name, method);
    Frame[] frames = analyzer.getFrames();
    // Elements of the frames array now contains info for each instruction
    // from the analyzed method. BasicInterpreter creates BasicValue, that
    // is using simplified type system that distinguishes the UNINITIALZED,
    // INT, FLOAT, LONG, DOUBLE, REFERENCE and RETURNADDRESS types.
    ...
  }
}



@since ASM 1.4.3