org.codehaus.groovy.transform.trait

Class Traits

java.lang.Object

org.codehaus.groovy.transform.trait.Traits

public abstract class Traits
extends Object

A collection of utility methods used to deal with traits.

Since:

2.3.0

Author:

Cédric Champeau

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Traits.Implemented Internal annotation used to indicate which methods in a trait interface have a default implementation.
static interface	Traits.TraitBridge

Field Summary

Fields

Modifier and Type	Field and Description
static ClassNode	FORCEOVERRIDE_CLASSNODE
static ClassNode	IMPLEMENTED_CLASSNODE
static Class	TRAIT_CLASS
static ClassNode	TRAIT_CLASSNODE
static ClassNode	TRAITBRIDGE_CLASSNODE

Constructor Summary

Constructors

Constructor and Description
Traits()

Method Summary

Methods

Modifier and Type	Method and Description
static Method	getBridgeMethodTarget(Method someMethod) Reflection API to find the method corresponding to the default implementation of a trait, given a bridge method.
static boolean	hasDefaultImplementation(MethodNode method) Indicates whether a method in a trait interface has a default implementation.
static boolean	isAnnotatedWithTrait(ClassNode cNode) Returns true if the specified class node is annotated with the Trait interface.
static boolean	isBridgeMethod(Method someMethod) Reflection API to indicate whether some method is a bridge method to the default implementation of a trait.
static boolean	isForceOverride(Method methodNode) Returns true if the specified method is annotated with ForceOverride
static boolean	isForceOverride(MethodNode methodNode) Returns true if the specified method node is annotated with ForceOverride
static boolean	isTrait(Class clazz) Returns true if the specified class is a trait.
static boolean	isTrait(ClassNode cNode) Returns true if the specified class node is a trait.

Methods inherited from class java.lang.Object

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

Field Detail

FORCEOVERRIDE_CLASSNODE

public static final ClassNode FORCEOVERRIDE_CLASSNODE

IMPLEMENTED_CLASSNODE

public static final ClassNode IMPLEMENTED_CLASSNODE

TRAITBRIDGE_CLASSNODE

public static final ClassNode TRAITBRIDGE_CLASSNODE

TRAIT_CLASS

public static final Class TRAIT_CLASS

TRAIT_CLASSNODE

public static final ClassNode TRAIT_CLASSNODE

Constructor Detail

Traits

public Traits()

Method Detail

isTrait

public static boolean isTrait(ClassNode cNode)

Returns true if the specified class node is a trait.

Parameters:

cNode - a class node to test

Returns:

true if the classnode represents a trait

isTrait

public static boolean isTrait(Class clazz)

Returns true if the specified class is a trait.

Parameters:

clazz - a class to test

Returns:

true if the classnode represents a trait

isAnnotatedWithTrait

public static boolean isAnnotatedWithTrait(ClassNode cNode)

Returns true if the specified class node is annotated with the Trait interface.

Parameters:

cNode - a class node

Returns:

true if the specified class node is annotated with the Trait interface.

isForceOverride

public static boolean isForceOverride(MethodNode methodNode)

Returns true if the specified method node is annotated with ForceOverride

Parameters:

methodNode - a method node

Returns:

true if the specified method node is annotated with ForceOverride

isForceOverride

public static boolean isForceOverride(Method methodNode)

Returns true if the specified method is annotated with ForceOverride

Parameters:

methodNode - a method

Returns:

true if the specified method is annotated with ForceOverride

hasDefaultImplementation

public static boolean hasDefaultImplementation(MethodNode method)

Indicates whether a method in a trait interface has a default implementation.

Parameters:

method - a method node

Returns:

true if the method has a default implementation in the trait

isBridgeMethod

public static boolean isBridgeMethod(Method someMethod)

Reflection API to indicate whether some method is a bridge method to the default implementation of a trait.

Parameters:

someMethod - a method node

Returns:

null if it is not a method implemented in a trait. If it is, returns the method from the trait class.

getBridgeMethodTarget

public static Method getBridgeMethodTarget(Method someMethod)

Reflection API to find the method corresponding to the default implementation of a trait, given a bridge method.

Parameters:

someMethod - a method node

Returns:

null if it is not a method implemented in a trait. If it is, returns the method from the trait class.