Java Classfile Parser

A parser for Java Classfiles, written in Rust using nom.

Installation

Classfile Parser is available from crates.io and can be included in your Cargo enabled project like this:

[dependencies]
classfile-parser = "~0.3"

Usage

extern crate classfile_parser;

use classfile_parser::class_parser;

fn main() {
    let classfile_bytes = include_bytes!("../path/to/JavaClass.class");

    match class_parser(classfile_bytes) {
        Ok((_, class_file)) => {
            println!(
                "version {},{} \
                 const_pool({}), \
                 this=const[{}], \
                 super=const[{}], \
                 interfaces({}), \
                 fields({}), \
                 methods({}), \
                 attributes({}), \
                 access({:?})",
                class_file.major_version,
                class_file.minor_version,
                class_file.const_pool_size,
                class_file.this_class,
                class_file.super_class,
                class_file.interfaces_count,
                class_file.fields_count,
                class_file.methods_count,
                class_file.attributes_count,
                class_file.access_flags
            );
        }
        Err(_) => panic!("Failed to parse"),
    };
}

Implementation Status

• [x] Header
• [x] Magic const
• [x] Version info
• [x] Constant pool
• [x] Constant pool size
• [x] Constant types
  • [x] Utf8
  • [x] Integer
  • [x] Float
  • [x] Long
  • [x] Double
  • [x] Class
  • [x] String
  • [x] Fieldref
  • [x] Methodref
  • [x] InterfaceMethodref
  • [x] NameAndType
  • [x] MethodHandle
  • [x] MethodType
  • [x] InvokeDynamic
• [x] Access flags
• [x] This class
• [x] Super class
• [x] Interfaces
• [x] Fields
• [x] Methods
• [x] Attributes
• [x] Basic attribute info block parsing
• [ ] Known typed attributes parsing
  • [x] Critical for JVM
  • [x] ConstantValue
  • [x] Code
  • [x] StackMapTable
  • [x] Exceptions
  • [x] BootstrapMethods
  • [ ] Critical for Java SE
  • [ ] InnerClasses
  • [ ] EnclosingMethod
  • [ ] Synthetic
  • [ ] Signature
  • [ ] RuntimeVisibleAnnotations
  • [ ] RuntimeInvisibleAnnotations
  • [ ] RuntimeVisibleParameterAnnotations
  • [ ] RuntimeInvisibleParameterAnnotations
  • [ ] RuntimeVisibleTypeAnnotations
  • [ ] RuntimeInvisibleTypeAnnotations
  • [ ] AnnotationDefault
  • [X] MethodParameters
  • [ ] Useful but not critical
  • [x] SourceFile
  • [ ] SourceDebugExtension
  • [ ] LineNumberTable
  • [ ] LocalVariableTable
  • [ ] LocalVariableTypeTable
  • [ ] Deprecated