org.jboss.weld.util.bytecode

Class ConstructorUtils

java.lang.Object

org.jboss.weld.util.bytecode.ConstructorUtils

public class ConstructorUtils
extends java.lang.Object

Utility class for working with constructors in the low level javassist API

Author:

Stuart Douglas

Method Summary

Modifier and Type	Method and Description
static void	addConstructor(java.lang.String returnType, java.lang.String[] params, java.lang.String[] exceptions, ClassFile file, java.util.List<DeferredBytecode> initialValueBytecode, boolean useUnsafeInstantiators) Adds a constructor that delegates to a super constructor with the same descriptor.
static void	addDefaultConstructor(ClassFile file, java.util.List<DeferredBytecode> initialValueBytecode, boolean useUnsafeInstantiators) adds a constructor that calls super()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

addDefaultConstructor

public static void addDefaultConstructor(ClassFile file,
                                         java.util.List<DeferredBytecode> initialValueBytecode,
                                         boolean useUnsafeInstantiators)

adds a constructor that calls super()

addConstructor

public static void addConstructor(java.lang.String returnType,
                                  java.lang.String[] params,
                                  java.lang.String[] exceptions,
                                  ClassFile file,
                                  java.util.List<DeferredBytecode> initialValueBytecode,
                                  boolean useUnsafeInstantiators)

Adds a constructor that delegates to a super constructor with the same descriptor. The bytecode in initialValueBytecode will be executed at the start of the constructor and can be used to initialize fields to a default value. As the object is not properly constructed at this point this bytecode may not reference this (i.e. the variable at location 0)

Parameters:

returnType - the constructor descriptor

exceptions - any exceptions that are thrown

file - the classfile to add the constructor to

initialValueBytecode - bytecode that can be used to set initial values