org.jboss.reflect.plugins.javassist
Class JavassistHelper

java.lang.Object
  org.jboss.reflect.plugins.javassist.JavassistHelper

public class JavassistHelper
extends Object

Utilities to figure out generic information

Version:

$Revision: 1.1 $

Author:

Kabir Khan

Constructor Summary

JavassistHelper()

Method Summary

static TypeInfo[]	createParameterTypes(javassist.bytecode.SignatureAttribute.MethodSignature sig, org.jboss.reflect.plugins.javassist.JavassistClassInfo typeInfo) Creates the generic parameter types for a constructor or method
static boolean	determineHierarchy(Stack<ClassInfo> hierarchy, ClassInfo current, ClassInfo search) Figures out the path between the passed in classes
static javassist.bytecode.SignatureAttribute.ClassSignature	getClassSignature(javassist.CtClass clazz) Gets the ClassSignature for a class
static javassist.bytecode.SignatureAttribute.ObjectType	getFieldSignature(javassist.CtField field) Gets the FieldSignature for a field
static javassist.bytecode.SignatureAttribute.MethodSignature	getMethodSignature(javassist.CtBehavior behaviour) Gets the MethodSignature for a method/constructor

Methods inherited from class java.lang.Object

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

Constructor Detail

JavassistHelper

public JavassistHelper()

Method Detail

getClassSignature

public static javassist.bytecode.SignatureAttribute.ClassSignature getClassSignature(javassist.CtClass clazz)

Gets the ClassSignature for a class

Parameters:

clazz - the CtClass

Returns:

the ClassSignature

Throws:

IllegalArgumentException - if clazz is null

createParameterTypes

public static TypeInfo[] createParameterTypes(javassist.bytecode.SignatureAttribute.MethodSignature sig,
                                              org.jboss.reflect.plugins.javassist.JavassistClassInfo typeInfo)

Creates the generic parameter types for a constructor or method

Parameters:

sig - the method/constructor signature

typeInfo - the javassist type info

Returns:

the parameter types

getMethodSignature

public static javassist.bytecode.SignatureAttribute.MethodSignature getMethodSignature(javassist.CtBehavior behaviour)

Gets the MethodSignature for a method/constructor

Parameters:

behaviour - the method/constructor

Returns:

the ClassSignature

Throws:

IllegalArgumentException - if clazz is null

getFieldSignature

public static javassist.bytecode.SignatureAttribute.ObjectType getFieldSignature(javassist.CtField field)

Gets the FieldSignature for a field

Parameters:

field - the field

Returns:

the FieldSignature

Throws:

IllegalArgumentException - if clazz is null

determineHierarchy

public static boolean determineHierarchy(Stack<ClassInfo> hierarchy,
                                         ClassInfo current,
                                         ClassInfo search)
                                  throws javassist.NotFoundException

Figures out the path between the passed in classes

Parameters:

hierarchy - receives the ClassInfos that make up the hierarchy. This parameter may be null, in which case is does not receive the classes

current - the sub class

search - the parent class or interface we are searching for

Returns:

true if the current inherits from search

Throws:

IllegalArgumentException - if current or search is null

javassist.NotFoundException