A parser for Java Classfiles, written in Rust using nom.
Classfile Parser is available from crates.io and can be included in your Cargo enabled project like this:
[dependencies]
classfile-parser = "~0.3"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"),
};
}- Header
- Magic const
- Version info
- Constant pool
- Constant pool size
- Constant types
- Utf8
- Integer
- Float
- Long
- Double
- Class
- String
- Fieldref
- Methodref
- InterfaceMethodref
- NameAndType
- MethodHandle
- MethodType
- InvokeDynamic
- Access flags
- This class
- Super class
- Interfaces
- Fields
- Methods
- Attributes
- Basic attribute info block parsing
- Known typed attributes parsing
- Critical for JVM
- ConstantValue
- Code
- StackMapTable
- Exceptions
- BootstrapMethods
- Critical for Java SE
- InnerClasses
- EnclosingMethod
- Synthetic
- Signature
- RuntimeVisibleAnnotations
- RuntimeInvisibleAnnotations
- RuntimeVisibleParameterAnnotations
- RuntimeInvisibleParameterAnnotations
- RuntimeVisibleTypeAnnotations
- RuntimeInvisibleTypeAnnotations
- AnnotationDefault
- MethodParameters
- Useful but not critical
- SourceFile
- SourceDebugExtension
- LineNumberTable
- LocalVariableTable
- LocalVariableTypeTable
- Deprecated
- Critical for JVM