Basics

In Jasm, attributes and classes, methods and fields are represented via declarations

The most simple declarations are:

Class

.class modifiers name { [members] }

Members is a list of declarations

Valid members for a class declaration are:

• method
• field

Modifiers

Valid modifiers for the class type are:
public private protected static final native abstract interface synthetic strict annotation enum super module

Method

.method modifiers name descriptor {
    parameters: { parameter... }, // optional
    exceptions: { exception... }, // optional
    code: { // optional
        instruction...
    }
}

Modifiers

Valid modifiers for the method type are: public private protected static final native abstract interface synthetic strict annotation enum synchronized bridge varargs

Exception

A exception is a try catch handler descriptor object, it is structured like this:

{ start, end, handler, exception }

start, end and handler are identifiers of the label they represent, so A, Q or AB. the exception is either the internal of the class, or to have an all catch block simply use *

Field

.field modifiers name descriptor

Modifiers

Valid modifiers for the field type are: public private protected static final native abstract interface synthetic strict annotation enum volatile transient