org.codehaus.groovy.runtime
[Java] Class MetaClassHelper

java.lang.Object
  org.codehaus.groovy.runtime.MetaClassHelper

public class MetaClassHelper
extends java.lang.Object

Authors:

John Wilson

Jochen Theodorou

ARRAY_WITH_NULL

public static final java.lang.Object[] ARRAY_WITH_NULL

EMPTY_ARRAY

public static final java.lang.Object[] EMPTY_ARRAY

EMPTY_CLASS_ARRAY

public static final java.lang.Class[] EMPTY_CLASS_ARRAY

EMPTY_TYPE_ARRAY

public static final java.lang.Class[] EMPTY_TYPE_ARRAY

LOG

protected static final Logger LOG

accessibleToConstructor

public static boolean accessibleToConstructor(java.lang.Class at, java.lang.reflect.Constructor constructor)

asPrimitiveArray

public static java.lang.Object asPrimitiveArray(java.util.List list, java.lang.Class parameterType)

Parameters:

list - the original list

parameterType - the resulting array type

Returns:

the constructed array

asWrapperArray

public static java.lang.Object[] asWrapperArray(java.lang.Object parameters, java.lang.Class componentType)

calculateParameterDistance

public static long calculateParameterDistance(java.lang.Class[] arguments, ParameterTypes pt)

capitalize

public static java.lang.String capitalize(java.lang.String property)

In general we want to match the signature that allows us to use as less arguments for the vargs part as possible. That means the longer signature usually wins if both signatures are vargs, while vargs looses always against a signature without vargs. A vs B : def foo(Object[] a) {1} -> case B def foo(a,b,Object[] c) {2} -> case A assert foo(new Object(),new Object()) == 2 --> A preferred over B A vs C : def foo(Object[] a) {1} -> case B def foo(a,b) {2} -> case C assert foo(new Object(),new Object()) == 2 --> C preferred over A A vs D : def foo(Object[] a) {1} -> case D def foo(a,Object[] b) {2} -> case A assert foo(new Object()) == 2 --> A preferred over D This gives C case B def foo(a,b) {2} -> case C assert foo(new Object(),new Object()) == 2 --> C preferred over B, matches C case B def foo(a,Object[] b) {2} -> case D assert foo(new Object(),new Object()) == 2 --> D preferred over B This gives C

castArgumentsToClassArray

public static java.lang.Class[] castArgumentsToClassArray(java.lang.Object[] argTypes)

chooseEmptyMethodParams

public static java.lang.Object chooseEmptyMethodParams(FastArray methods)

chooseMostGeneralMethodWith1NullParam

public static java.lang.Object chooseMostGeneralMethodWith1NullParam(FastArray methods)

containsMatchingMethod

public static boolean containsMatchingMethod(java.util.List list, MetaMethod method)

convertToTypeArray

public static java.lang.Class[] convertToTypeArray(java.lang.Object[] args)

createExceptionText

public static GroovyRuntimeException createExceptionText(java.lang.String init, MetaMethod method, java.lang.Object object, java.lang.Object[] args, java.lang.Throwable reason, boolean setReason)

doSetMetaClass

public static void doSetMetaClass(java.lang.Object self, MetaClass mc)

getClassName

protected static java.lang.String getClassName(java.lang.Object object)

getMethodPointer

public static Closure getMethodPointer(java.lang.Object object, java.lang.String methodName)

isAssignableFrom

public static boolean isAssignableFrom(java.lang.Class classToTransformTo, java.lang.Class classToTransformFrom)

isGenericSetMethod

public static boolean isGenericSetMethod(MetaMethod method)

isSuperclass

protected static boolean isSuperclass(java.lang.Class clazz, java.lang.Class superclass)

logMethodCall

public static void logMethodCall(java.lang.Object object, java.lang.String methodName, java.lang.Object[] arguments)

makeArray

public static java.lang.Object makeArray(java.lang.Object obj, java.lang.Class secondary, int length)

makeCommonArray

public static java.lang.Object makeCommonArray(java.lang.Object[] arguments, int offset, java.lang.Class fallback)

normalizedValue

protected static java.lang.String normalizedValue(java.lang.Object argument)

parametersAreCompatible

public static boolean parametersAreCompatible(java.lang.Class[] arguments, java.lang.Class[] parameters)

sameClass

public static boolean sameClass(java.lang.Class[] params, java.lang.Object arg)

sameClasses

public static boolean sameClasses(java.lang.Class[] params, java.lang.Object[] arguments, boolean weakNullCheck)

sameClasses

public static boolean sameClasses(java.lang.Class[] params, java.lang.Object[] arguments)

sameClasses

public static boolean sameClasses(java.lang.Class[] params)

sameClasses

public static boolean sameClasses(java.lang.Class[] params, java.lang.Object arg1)

sameClasses

public static boolean sameClasses(java.lang.Class[] params, java.lang.Object arg1, java.lang.Object arg2)

sameClasses

public static boolean sameClasses(java.lang.Class[] params, java.lang.Object arg1, java.lang.Object arg2, java.lang.Object arg3)

sameClasses

public static boolean sameClasses(java.lang.Class[] params, java.lang.Object arg1, java.lang.Object arg2, java.lang.Object arg3, java.lang.Object arg4)

Sets the meta class for an object, by delegating to the appropriate DefaultGroovyMethods helper method. This method was introduced as a breaking change in 2.0 to solve rare cases of stack overflow. See GROOVY-5285. The method is named doSetMetaClass in order to prevent misusages. Do not use this method directly unless you know what you do.

Parameters:

self - the object for which to set the meta class

mc - the metaclass

shortName

protected static java.lang.String shortName(java.lang.Object object)

unwrap

public static void unwrap(java.lang.Object[] arguments)

wrap

public static java.lang.Class[] wrap(java.lang.Class[] classes)

Groovy Documentation