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groovy.lang.MetaClassImpl Maven / Gradle / Ivy
/*
* Copyright 2003-2012 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package groovy.lang;
import org.codehaus.groovy.GroovyBugError;
import org.codehaus.groovy.ast.ClassNode;
import org.codehaus.groovy.classgen.asm.BytecodeHelper;
import org.codehaus.groovy.control.CompilationUnit;
import org.codehaus.groovy.control.Phases;
import org.codehaus.groovy.reflection.CachedClass;
import org.codehaus.groovy.reflection.CachedConstructor;
import org.codehaus.groovy.reflection.CachedField;
import org.codehaus.groovy.reflection.CachedMethod;
import org.codehaus.groovy.reflection.ClassInfo;
import org.codehaus.groovy.reflection.GeneratedMetaMethod;
import org.codehaus.groovy.reflection.ParameterTypes;
import org.codehaus.groovy.reflection.ReflectionCache;
import org.codehaus.groovy.runtime.ConvertedClosure;
import org.codehaus.groovy.runtime.CurriedClosure;
import org.codehaus.groovy.runtime.DefaultGroovyMethods;
import org.codehaus.groovy.runtime.GeneratedClosure;
import org.codehaus.groovy.runtime.GroovyCategorySupport;
import org.codehaus.groovy.runtime.InvokerHelper;
import org.codehaus.groovy.runtime.InvokerInvocationException;
import org.codehaus.groovy.runtime.MetaClassHelper;
import org.codehaus.groovy.runtime.MethodClosure;
import org.codehaus.groovy.runtime.callsite.AbstractCallSite;
import org.codehaus.groovy.runtime.callsite.CallSite;
import org.codehaus.groovy.runtime.callsite.ConstructorSite;
import org.codehaus.groovy.runtime.callsite.MetaClassConstructorSite;
import org.codehaus.groovy.runtime.callsite.PogoMetaClassSite;
import org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite;
import org.codehaus.groovy.runtime.callsite.PojoMetaClassSite;
import org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite;
import org.codehaus.groovy.runtime.callsite.StaticMetaClassSite;
import org.codehaus.groovy.runtime.callsite.StaticMetaMethodSite;
import org.codehaus.groovy.runtime.metaclass.ClosureMetaMethod;
import org.codehaus.groovy.runtime.metaclass.MethodMetaProperty.GetBeanMethodMetaProperty;
import org.codehaus.groovy.runtime.metaclass.MethodMetaProperty.GetMethodMetaProperty;
import org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl;
import org.codehaus.groovy.runtime.metaclass.MetaMethodIndex;
import org.codehaus.groovy.runtime.metaclass.MethodSelectionException;
import org.codehaus.groovy.runtime.metaclass.MissingMethodExceptionNoStack;
import org.codehaus.groovy.runtime.metaclass.MissingMethodExecutionFailed;
import org.codehaus.groovy.runtime.metaclass.MissingPropertyExceptionNoStack;
import org.codehaus.groovy.runtime.metaclass.MixinInstanceMetaMethod;
import org.codehaus.groovy.runtime.metaclass.NewInstanceMetaMethod;
import org.codehaus.groovy.runtime.metaclass.NewMetaMethod;
import org.codehaus.groovy.runtime.metaclass.NewStaticMetaMethod;
import org.codehaus.groovy.runtime.metaclass.TransformMetaMethod;
import org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation;
import org.codehaus.groovy.runtime.typehandling.NumberMathModificationInfo;
import org.codehaus.groovy.runtime.wrappers.Wrapper;
import org.codehaus.groovy.util.ComplexKeyHashMap;
import org.codehaus.groovy.util.FastArray;
import org.codehaus.groovy.util.SingleKeyHashMap;
import org.objectweb.asm.ClassVisitor;
import java.beans.BeanInfo;
import java.beans.EventSetDescriptor;
import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.lang.reflect.Proxy;
import java.net.URL;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.*;
/**
* Allows methods to be dynamically added to existing classes at runtime
*
* @author James Strachan
* @author Guillaume Laforge
* @author Jochen Theodorou
* @author Graeme Rocher
* @author Alex Tkachman
* @author Roshan Dawrani
* @version $Revision$
* @see groovy.lang.MetaClass
*/
public class MetaClassImpl implements MetaClass, MutableMetaClass {
private static final String CLOSURE_CALL_METHOD = "call";
private static final String CLOSURE_DO_CALL_METHOD = "doCall";
protected static final String STATIC_METHOD_MISSING = "$static_methodMissing";
protected static final String STATIC_PROPERTY_MISSING = "$static_propertyMissing";
protected static final String METHOD_MISSING = "methodMissing";
protected static final String PROPERTY_MISSING = "propertyMissing";
private static final String GET_PROPERTY_METHOD = "getProperty";
private static final String SET_PROPERTY_METHOD = "setProperty";
protected static final String INVOKE_METHOD_METHOD = "invokeMethod";
private static final Class[] METHOD_MISSING_ARGS = new Class[]{String.class, Object.class};
private static final Class[] GETTER_MISSING_ARGS = new Class[]{String.class};
private static final Class[] SETTER_MISSING_ARGS = METHOD_MISSING_ARGS;
private static final Comparator CACHED_CLASS_NAME_COMPARATOR = new Comparator() {
public int compare(final CachedClass o1, final CachedClass o2) {
return o1.getName().compareTo(o2.getName());
}
};
protected final Class theClass;
protected final CachedClass theCachedClass;
private static final MetaMethod[] EMPTY = new MetaMethod[0];
protected MetaMethod getPropertyMethod;
protected MetaMethod invokeMethodMethod;
protected MetaMethod setPropertyMethod;
public final CachedClass getTheCachedClass() {
return theCachedClass;
}
protected MetaClassRegistry registry;
protected final boolean isGroovyObject;
protected final boolean isMap;
private ClassNode classNode;
private final Index classPropertyIndex = new MethodIndex();
private Index classPropertyIndexForSuper = new MethodIndex();
private final SingleKeyHashMap staticPropertyIndex = new SingleKeyHashMap();
private final Map listeners = new HashMap();
private FastArray constructors;
private final List allMethods = new ArrayList();
private boolean initialized;
// we only need one of these that can be reused over and over.
private final MetaProperty arrayLengthProperty = new MetaArrayLengthProperty();
private static final MetaMethod AMBIGUOUS_LISTENER_METHOD = new DummyMetaMethod();
public static final Object[] EMPTY_ARGUMENTS = {};
private final Set newGroovyMethodsSet = new HashSet();
private MetaMethod genericGetMethod;
private MetaMethod genericSetMethod;
private MetaMethod propertyMissingGet;
private MetaMethod propertyMissingSet;
private MetaMethod methodMissing;
private MetaMethodIndex.Header mainClassMethodHeader;
protected final MetaMethodIndex metaMethodIndex;
private final MetaMethod [] myNewMetaMethods;
private final MetaMethod [] additionalMetaMethods;
public MetaClassImpl(final Class theClass, MetaMethod [] add) {
this.theClass = theClass;
theCachedClass = ReflectionCache.getCachedClass(theClass);
this.isGroovyObject = GroovyObject.class.isAssignableFrom(theClass);
this.isMap = Map.class.isAssignableFrom(theClass);
this.registry = GroovySystem.getMetaClassRegistry();
metaMethodIndex = new MetaMethodIndex(theCachedClass);
final MetaMethod[] metaMethods = theCachedClass.getNewMetaMethods();
if (add != null && !(add.length == 0)) {
ArrayList arr = new ArrayList();
arr.addAll(Arrays.asList(metaMethods));
arr.addAll(Arrays.asList(add));
myNewMetaMethods = arr.toArray(new MetaMethod[arr.size()]);
additionalMetaMethods = metaMethods;
}
else {
myNewMetaMethods = metaMethods;
additionalMetaMethods = EMPTY;
}
}
public MetaClassImpl(final Class theClass) {
this(theClass, null);
}
public MetaClassImpl(MetaClassRegistry registry, final Class theClass, MetaMethod add []) {
this(theClass, add);
this.registry = registry;
this.constructors = new FastArray(theCachedClass.getConstructors());
}
public MetaClassImpl(MetaClassRegistry registry, final Class theClass) {
this(registry, theClass, null);
}
public MetaClassRegistry getRegistry() {
return registry;
}
/**
* @see MetaObjectProtocol#respondsTo(Object, String, Object[])
*/
public List respondsTo(Object obj, String name, Object[] argTypes) {
Class[] classes = MetaClassHelper.castArgumentsToClassArray(argTypes);
MetaMethod m = getMetaMethod(name, classes);
List methods = new ArrayList();
if (m != null) {
methods.add(m);
}
return methods;
}
/**
* @see MetaObjectProtocol#respondsTo(Object, String)
*/
public List respondsTo(final Object obj, final String name) {
final Object o = getMethods(getTheClass(), name, false);
if (o instanceof FastArray)
return ((FastArray) o).toList();
else
return Collections.singletonList(o);
}
/**
* @see MetaObjectProtocol#hasProperty(Object,String)
*/
public MetaProperty hasProperty(Object obj, String name) {
return getMetaProperty(name);
}
/**
* @see MetaObjectProtocol#getMetaProperty(String)
*/
public MetaProperty getMetaProperty(String name) {
SingleKeyHashMap propertyMap = classPropertyIndex.getNotNull(theCachedClass);
if (propertyMap.containsKey(name)) {
return (MetaProperty) propertyMap.get(name);
} else if (staticPropertyIndex.containsKey(name)) {
return (MetaProperty) staticPropertyIndex.get(name);
} else {
propertyMap = classPropertyIndexForSuper.getNotNull(theCachedClass);
if (propertyMap.containsKey(name))
return (MetaProperty) propertyMap.get(name);
else {
CachedClass superClass = theCachedClass;
while (superClass != null && superClass != ReflectionCache.OBJECT_CLASS) {
final MetaBeanProperty property = findPropertyInClassHierarchy(name, superClass);
if (property != null) {
onSuperPropertyFoundInHierarchy(property);
return property;
}
superClass = superClass.getCachedSuperClass();
}
return null;
}
}
}
/**
* @see MetaObjectProtocol#getStaticMetaMethod(String, Object[])
*/
public MetaMethod getStaticMetaMethod(String name, Object[] argTypes) {
Class[] classes = MetaClassHelper.castArgumentsToClassArray(argTypes);
return pickStaticMethod(name, classes);
}
/**
* @see MetaObjectProtocol#getMetaMethod(String, Object[])
*/
public MetaMethod getMetaMethod(String name, Object[] argTypes) {
Class[] classes = MetaClassHelper.castArgumentsToClassArray(argTypes);
return pickMethod(name, classes);
}
public Class getTheClass() {
return this.theClass;
}
public boolean isGroovyObject() {
return isGroovyObject;
}
private void fillMethodIndex() {
mainClassMethodHeader = metaMethodIndex.getHeader(theClass);
LinkedList superClasses = getSuperClasses();
CachedClass firstGroovySuper = calcFirstGroovySuperClass(superClasses);
Set interfaces = theCachedClass.getInterfaces();
addInterfaceMethods(interfaces);
populateMethods(superClasses, firstGroovySuper);
inheritInterfaceNewMetaMethods(interfaces);
if (isGroovyObject) {
metaMethodIndex.copyMethodsToSuper();
connectMultimethods(superClasses, firstGroovySuper);
removeMultimethodsOverloadedWithPrivateMethods();
replaceWithMOPCalls(theCachedClass.mopMethods);
}
}
private void populateMethods(LinkedList superClasses, CachedClass firstGroovySuper) {
Iterator iter = superClasses.iterator();
MetaMethodIndex.Header header = metaMethodIndex.getHeader(firstGroovySuper.getTheClass());
CachedClass c;
for (; iter.hasNext();) {
c = (CachedClass) iter.next();
CachedMethod[] cachedMethods = c.getMethods();
for (CachedMethod metaMethod : cachedMethods) {
addToAllMethodsIfPublic(metaMethod);
if (!metaMethod.isPrivate() || c == firstGroovySuper)
addMetaMethodToIndex(metaMethod, header);
}
MetaMethod[] cachedMethods1 = getNewMetaMethods(c);
for (final MetaMethod method : cachedMethods1) {
if (!newGroovyMethodsSet.contains(method)) {
newGroovyMethodsSet.add(method);
addMetaMethodToIndex(method, header);
}
}
if (c == firstGroovySuper)
break;
}
MetaMethodIndex.Header last = header;
for (;iter.hasNext();) {
c = (CachedClass) iter.next();
header = metaMethodIndex.getHeader(c.getTheClass());
if (last != null) {
metaMethodIndex.copyNonPrivateMethods(last, header);
}
last = header;
for (CachedMethod metaMethod : c.getMethods()) {
addToAllMethodsIfPublic(metaMethod);
addMetaMethodToIndex(metaMethod, header);
}
for (final MetaMethod method : getNewMetaMethods(c)) {
if (method.getName().equals("") && !method.getDeclaringClass().equals(theCachedClass)) continue;
if (!newGroovyMethodsSet.contains(method)) {
newGroovyMethodsSet.add(method);
addMetaMethodToIndex(method, header);
}
}
}
}
private MetaMethod[] getNewMetaMethods(CachedClass c) {
if (theCachedClass != c)
return c.getNewMetaMethods();
return myNewMetaMethods;
}
private void addInterfaceMethods(Set interfaces) {
MetaMethodIndex.Header header = metaMethodIndex.getHeader(theClass);
for (CachedClass c : interfaces) {
final CachedMethod[] m = c.getMethods();
for (int i = 0; i != m.length; ++i) {
MetaMethod method = m[i];
addMetaMethodToIndex(method, header);
}
}
}
protected LinkedList getSuperClasses() {
LinkedList superClasses = new LinkedList();
if (theClass.isInterface()) {
superClasses.addFirst(ReflectionCache.OBJECT_CLASS);
} else {
for (CachedClass c = theCachedClass; c != null; c = c.getCachedSuperClass()) {
superClasses.addFirst(c);
}
if (theCachedClass.isArray && theClass != Object[].class && !theClass.getComponentType().isPrimitive()) {
superClasses.addFirst(ReflectionCache.OBJECT_ARRAY_CLASS);
}
}
return superClasses;
}
private void removeMultimethodsOverloadedWithPrivateMethods() {
MethodIndexAction mia = new MethodIndexAction() {
public boolean skipClass(Class clazz) {
return clazz == theClass;
}
public void methodNameAction(Class clazz, MetaMethodIndex.Entry e) {
if (e.methods == null)
return;
boolean hasPrivate = false;
if (e.methods instanceof FastArray) {
FastArray methods = (FastArray) e.methods;
final int len = methods.size();
final Object[] data = methods.getArray();
for (int i = 0; i != len; ++i) {
MetaMethod method = (MetaMethod) data[i];
if (method.isPrivate() && clazz == method.getDeclaringClass().getTheClass()) {
hasPrivate = true;
break;
}
}
}
else {
MetaMethod method = (MetaMethod) e.methods;
if (method.isPrivate() && clazz == method.getDeclaringClass().getTheClass()) {
hasPrivate = true;
}
}
if (!hasPrivate) return;
// We have private methods for that name, so remove the
// multimethods. That is the same as in our index for
// super, so just copy the list from there. It is not
// possible to use a pointer here, because the methods
// in the index for super are replaced later by MOP
// methods like super$5$foo
final Object o = e.methodsForSuper;
if (o instanceof FastArray)
e.methods = ((FastArray) o).copy();
else
e.methods = o;
}
};
mia.iterate();
}
private void replaceWithMOPCalls(final CachedMethod[] mopMethods) {
// no MOP methods if not a child of GroovyObject
if (!isGroovyObject) return;
class MOPIter extends MethodIndexAction {
boolean useThis;
public boolean skipClass(CachedClass clazz) {
return !useThis && clazz == theCachedClass;
}
public void methodNameAction(Class clazz, MetaMethodIndex.Entry e) {
if (useThis) {
if (e.methods == null)
return;
if (e.methods instanceof FastArray) {
FastArray methods = (FastArray) e.methods;
processFastArray(methods);
}
else {
MetaMethod method = (MetaMethod) e.methods;
if (method instanceof NewMetaMethod)
return;
if (useThis ^ Modifier.isPrivate(method.getModifiers())) return;
String mopName = method.getMopName();
int index = Arrays.binarySearch(mopMethods, mopName, CachedClass.CachedMethodComparatorWithString.INSTANCE);
if (index >= 0) {
int from = index;
while (from > 0 && mopMethods[from-1].getName().equals(mopName))
from--;
int to = index;
while (to < mopMethods.length-1 && mopMethods[to+1].getName().equals(mopName))
to++;
int matchingMethod = findMatchingMethod(mopMethods, from, to, method);
if (matchingMethod != -1) {
e.methods = mopMethods[matchingMethod];
}
}
}
}
else {
if (e.methodsForSuper == null)
return;
if (e.methodsForSuper instanceof FastArray) {
FastArray methods = (FastArray) e.methodsForSuper;
processFastArray(methods);
}
else {
MetaMethod method = (MetaMethod) e.methodsForSuper;
if (method instanceof NewMetaMethod)
return;
if (useThis ^ Modifier.isPrivate(method.getModifiers())) return;
String mopName = method.getMopName();
// GROOVY-4922: Due to a numbering scheme change, we must find the super$X$method which exists
// with the highest number. If we don't, no method may be found, leading to a stack overflow
String[] decomposedMopName = decomposeMopName(mopName);
int distance = Integer.valueOf(decomposedMopName[1]);
while (distance>0) {
String fixedMopName = decomposedMopName[0] + distance + decomposedMopName[2];
int index = Arrays.binarySearch(mopMethods, fixedMopName, CachedClass.CachedMethodComparatorWithString.INSTANCE);
if (index >= 0) {
int from = index;
while (from > 0 && mopMethods[from-1].getName().equals(fixedMopName))
from--;
int to = index;
while (to < mopMethods.length-1 && mopMethods[to+1].getName().equals(fixedMopName))
to++;
int matchingMethod = findMatchingMethod(mopMethods, from, to, method);
if (matchingMethod != -1) {
e.methodsForSuper = mopMethods[matchingMethod];
distance = 0;
}
}
distance--;
}
}
}
}
private String[] decomposeMopName(final String mopName) {
int idx = mopName.indexOf("$");
if (idx>0) {
int eidx = mopName.indexOf("$", idx+1);
if (eidx>0) {
return new String[] {
mopName.substring(0, idx+1),
mopName.substring(idx+1, eidx),
mopName.substring(eidx)
};
}
}
return new String[]{"","0",mopName};
}
private void processFastArray(FastArray methods) {
final int len = methods.size();
final Object[] data = methods.getArray();
for (int i = 0; i != len; ++i) {
MetaMethod method = (MetaMethod) data[i];
if (method instanceof NewMetaMethod) continue;
boolean isPrivate = Modifier.isPrivate(method.getModifiers());
if (useThis ^ isPrivate) continue;
String mopName = method.getMopName();
int index = Arrays.binarySearch(mopMethods, mopName, CachedClass.CachedMethodComparatorWithString.INSTANCE);
if (index >= 0) {
int from = index;
while (from > 0 && mopMethods[from-1].getName().equals(mopName))
from--;
int to = index;
while (to < mopMethods.length-1 && mopMethods[to+1].getName().equals(mopName))
to++;
int matchingMethod = findMatchingMethod(mopMethods, from, to, method);
if (matchingMethod != -1) {
methods.set(i, mopMethods[matchingMethod]);
}
}
}
}
}
MOPIter iter = new MOPIter();
// replace all calls for super with the correct MOP method
iter.useThis = false;
iter.iterate();
// replace all calls for this with the correct MOP method
iter.useThis = true;
iter.iterate();
}
private void inheritInterfaceNewMetaMethods(Set interfaces) {
// add methods declared by DGM for interfaces
for (CachedClass cls : interfaces) {
MetaMethod methods[] = getNewMetaMethods(cls);
for (MetaMethod method : methods) {
if (!newGroovyMethodsSet.contains(method)) {
newGroovyMethodsSet.add(method);
}
addMetaMethodToIndex(method, mainClassMethodHeader);
}
}
}
private void connectMultimethods(List superClasses, CachedClass firstGroovyClass) {
superClasses = DefaultGroovyMethods.reverse(superClasses);
MetaMethodIndex.Header last = null;
for (Iterator iter = superClasses.iterator(); iter.hasNext();) {
CachedClass c = (CachedClass) iter.next();
MetaMethodIndex.Header methodIndex = metaMethodIndex.getHeader(c.getTheClass());
// We don't copy DGM methods to superclasses' indexes
// The reason we can do that is particular set of DGM methods in use,
// if at some point we will define DGM method for some Groovy class or
// for a class derived from such, we will need to revise this condition.
// It saves us a lot of space and some noticeable time
if (last != null) metaMethodIndex.copyNonPrivateNonNewMetaMethods(last, methodIndex);
last = methodIndex;
if (c == firstGroovyClass)
break;
}
}
private CachedClass calcFirstGroovySuperClass(Collection superClasses) {
if (theCachedClass.isInterface)
return ReflectionCache.OBJECT_CLASS;
CachedClass firstGroovy = null;
Iterator iter = superClasses.iterator();
for (; iter.hasNext();) {
CachedClass c = (CachedClass) iter.next();
if (GroovyObject.class.isAssignableFrom(c.getTheClass())) {
firstGroovy = c;
break;
}
}
if (firstGroovy == null)
firstGroovy = theCachedClass;
else {
if (firstGroovy.getTheClass() == GroovyObjectSupport.class && iter.hasNext()) {
firstGroovy = (CachedClass) iter.next();
if (firstGroovy.getTheClass() == Closure.class && iter.hasNext()) {
firstGroovy = (CachedClass) iter.next();
}
}
}
return GroovyObject.class.isAssignableFrom(firstGroovy.getTheClass()) ? firstGroovy.getCachedSuperClass() : firstGroovy;
}
/**
* @return all the normal instance methods available on this class for the
* given name
*/
private Object getMethods(Class sender, String name, boolean isCallToSuper) {
Object answer;
final MetaMethodIndex.Entry entry = metaMethodIndex.getMethods(sender, name);
if (entry == null)
answer = FastArray.EMPTY_LIST;
else
if (isCallToSuper) {
answer = entry.methodsForSuper;
} else {
answer = entry.methods;
}
if (answer == null) answer = FastArray.EMPTY_LIST;
if (!isCallToSuper) {
List used = GroovyCategorySupport.getCategoryMethods(name);
if (used != null) {
FastArray arr;
if (answer instanceof MetaMethod) {
arr = new FastArray();
arr.add(answer);
}
else
arr = ((FastArray) answer).copy();
for (Iterator iter = used.iterator(); iter.hasNext();) {
MetaMethod element = (MetaMethod) iter.next();
if (!element.getDeclaringClass().getTheClass().isAssignableFrom(sender))
continue;
filterMatchingMethodForCategory(arr, element);
}
answer = arr;
}
}
return answer;
}
/**
* @return all the normal static methods available on this class for the
* given name
*/
private Object getStaticMethods(Class sender, String name) {
final MetaMethodIndex.Entry entry = metaMethodIndex.getMethods(sender, name);
if (entry == null)
return FastArray.EMPTY_LIST;
Object answer = entry.staticMethods;
if (answer == null)
return FastArray.EMPTY_LIST;
return answer;
}
public boolean isModified() {
return false; // MetaClassImpl not designed for modification, just return false
}
public void addNewInstanceMethod(Method method) {
final CachedMethod cachedMethod = CachedMethod.find(method);
NewInstanceMetaMethod newMethod = new NewInstanceMetaMethod(cachedMethod);
final CachedClass declaringClass = newMethod.getDeclaringClass();
addNewInstanceMethodToIndex(newMethod, metaMethodIndex.getHeader(declaringClass.getTheClass()));
}
private void addNewInstanceMethodToIndex(MetaMethod newMethod, MetaMethodIndex.Header header) {
if (!newGroovyMethodsSet.contains(newMethod)) {
newGroovyMethodsSet.add(newMethod);
addMetaMethodToIndex(newMethod, header);
}
}
public void addNewStaticMethod(Method method) {
final CachedMethod cachedMethod = CachedMethod.find(method);
NewStaticMetaMethod newMethod = new NewStaticMetaMethod(cachedMethod);
final CachedClass declaringClass = newMethod.getDeclaringClass();
addNewStaticMethodToIndex(newMethod, metaMethodIndex.getHeader(declaringClass.getTheClass()));
}
private void addNewStaticMethodToIndex(MetaMethod newMethod, MetaMethodIndex.Header header) {
if (!newGroovyMethodsSet.contains(newMethod)) {
newGroovyMethodsSet.add(newMethod);
addMetaMethodToIndex(newMethod, header);
}
}
public Object invokeMethod(Object object, String methodName, Object arguments) {
if (arguments == null) {
return invokeMethod(object, methodName, MetaClassHelper.EMPTY_ARRAY);
}
if (arguments instanceof Tuple) {
Tuple tuple = (Tuple) arguments;
return invokeMethod(object, methodName, tuple.toArray());
}
if (arguments instanceof Object[]) {
return invokeMethod(object, methodName, (Object[]) arguments);
} else {
return invokeMethod(object, methodName, new Object[]{arguments});
}
}
public Object invokeMissingMethod(Object instance, String methodName, Object[] arguments) {
return invokeMissingMethod(instance, methodName, arguments, null, false);
}
public Object invokeMissingProperty(Object instance, String propertyName, Object optionalValue, boolean isGetter) {
Class theClass = instance instanceof Class ? (Class)instance : instance.getClass();
CachedClass superClass = theCachedClass;
while(superClass != null && superClass != ReflectionCache.OBJECT_CLASS) {
final MetaBeanProperty property = findPropertyInClassHierarchy(propertyName, superClass);
if(property != null) {
onSuperPropertyFoundInHierarchy(property);
if(!isGetter) {
property.setProperty(instance, optionalValue);
return null;
}
else {
return property.getProperty(instance);
}
}
superClass = superClass.getCachedSuperClass();
}
// got here to property not found, look for getProperty or setProperty overrides
if(isGetter) {
final Class[] getPropertyArgs = {String.class};
final MetaMethod method = findMethodInClassHierarchy(instance.getClass(), GET_PROPERTY_METHOD, getPropertyArgs, this);
if(method != null && method instanceof ClosureMetaMethod) {
onGetPropertyFoundInHierarchy(method);
return method.invoke(instance,new Object[]{propertyName});
}
}
else {
final Class[] setPropertyArgs = {String.class, Object.class};
final MetaMethod method = findMethodInClassHierarchy(instance.getClass(), SET_PROPERTY_METHOD, setPropertyArgs, this);
if(method != null && method instanceof ClosureMetaMethod) {
onSetPropertyFoundInHierarchy(method);
return method.invoke(instance, new Object[]{propertyName, optionalValue});
}
}
try {
if (!(instance instanceof Class)) {
if (isGetter && propertyMissingGet != null) {
return propertyMissingGet.invoke(instance, new Object[]{propertyName});
} else {
if (propertyMissingSet != null)
return propertyMissingSet.invoke(instance, new Object[]{propertyName, optionalValue});
}
}
} catch (InvokerInvocationException iie) {
boolean shouldHandle = isGetter && propertyMissingGet != null;
if (!shouldHandle) shouldHandle = !isGetter && propertyMissingSet != null;
if (shouldHandle && iie.getCause() instanceof MissingPropertyException) {
throw (MissingPropertyException) iie.getCause();
}
throw iie;
}
if (instance instanceof Class && theClass != Class.class) {
final MetaProperty metaProperty = InvokerHelper.getMetaClass(Class.class).hasProperty(instance, propertyName);
if (metaProperty != null)
if (isGetter)
return metaProperty.getProperty(instance);
else {
metaProperty.setProperty(instance, optionalValue);
return null;
}
}
throw new MissingPropertyExceptionNoStack(propertyName, theClass);
}
private Object invokeMissingMethod(Object instance, String methodName, Object[] arguments, RuntimeException original, boolean isCallToSuper) {
if (!isCallToSuper) {
Class instanceKlazz = instance.getClass();
if (theClass != instanceKlazz && theClass.isAssignableFrom(instanceKlazz))
instanceKlazz = theClass;
Class[] argClasses = MetaClassHelper.castArgumentsToClassArray(arguments);
MetaMethod method = findMixinMethod(methodName, argClasses);
if(method != null) {
onMixinMethodFound(method);
return method.invoke(instance, arguments);
}
method = findMethodInClassHierarchy(instanceKlazz, methodName, argClasses, this);
if(method != null) {
onSuperMethodFoundInHierarchy(method);
return method.invoke(instance, arguments);
}
// still not method here, so see if there is an invokeMethod method up the hierarchy
final Class[] invokeMethodArgs = {String.class, Object[].class};
method = findMethodInClassHierarchy(instanceKlazz, INVOKE_METHOD_METHOD, invokeMethodArgs, this );
if(method != null && method instanceof ClosureMetaMethod) {
onInvokeMethodFoundInHierarchy(method);
return method.invoke(instance, invokeMethodArgs);
}
}
if (methodMissing != null) {
try {
return methodMissing.invoke(instance, new Object[]{methodName, arguments});
} catch (InvokerInvocationException iie) {
if (methodMissing instanceof ClosureMetaMethod && iie.getCause() instanceof MissingMethodException) {
MissingMethodException mme = (MissingMethodException) iie.getCause();
throw new MissingMethodExecutionFailed (mme.getMethod(), mme.getClass(),
mme.getArguments(),mme.isStatic(),mme);
}
throw iie;
} catch (MissingMethodException mme) {
if (methodMissing instanceof ClosureMetaMethod)
throw new MissingMethodExecutionFailed (mme.getMethod(), mme.getClass(),
mme.getArguments(),mme.isStatic(),mme);
else
throw mme;
}
} else if (original != null) throw original;
else throw new MissingMethodExceptionNoStack(methodName, theClass, arguments, false);
}
protected void onSuperPropertyFoundInHierarchy(MetaBeanProperty property) {
}
protected void onMixinMethodFound(MetaMethod method) {
}
protected void onSuperMethodFoundInHierarchy(MetaMethod method) {
}
protected void onInvokeMethodFoundInHierarchy(MetaMethod method) {
}
protected void onSetPropertyFoundInHierarchy(MetaMethod method) {
}
protected void onGetPropertyFoundInHierarchy(MetaMethod method) {
}
/**
* Hook to deal with the case of MissingProperty for static properties. The method will look attempt to look up
* "propertyMissing" handlers and invoke them otherwise thrown a MissingPropertyException
*
* @param instance The instance
* @param propertyName The name of the property
* @param optionalValue The value in the case of a setter
* @param isGetter True if its a getter
* @return The value in the case of a getter or a MissingPropertyException
*/
protected Object invokeStaticMissingProperty(Object instance, String propertyName, Object optionalValue, boolean isGetter) {
MetaClass mc = instance instanceof Class ? registry.getMetaClass((Class) instance) : this;
if (isGetter) {
MetaMethod propertyMissing = mc.getMetaMethod(STATIC_PROPERTY_MISSING, GETTER_MISSING_ARGS);
if (propertyMissing != null) {
return propertyMissing.invoke(instance, new Object[]{propertyName});
}
} else {
MetaMethod propertyMissing = mc.getMetaMethod(STATIC_PROPERTY_MISSING, SETTER_MISSING_ARGS);
if (propertyMissing != null) {
return propertyMissing.invoke(instance, new Object[]{propertyName, optionalValue});
}
}
if (instance instanceof Class) {
throw new MissingPropertyException(propertyName, (Class) instance);
}
throw new MissingPropertyException(propertyName, theClass);
}
/**
* Invokes the given method on the object.
*/
public Object invokeMethod(Object object, String methodName, Object[] originalArguments) {
return invokeMethod(theClass, object, methodName, originalArguments, false, false);
}
/**
* Invokes the given method on the object.
*/
public Object invokeMethod(Class sender, Object object, String methodName, Object[] originalArguments, boolean isCallToSuper, boolean fromInsideClass) {
checkInitalised();
if (object == null) {
throw new NullPointerException("Cannot invoke method: " + methodName + " on null object");
}
final Object[] arguments = originalArguments == null ? EMPTY_ARGUMENTS : originalArguments;
// final Class[] argClasses = MetaClassHelper.convertToTypeArray(arguments);
//
// unwrap(arguments);
MetaMethod method = null;
if (CLOSURE_CALL_METHOD.equals(methodName) && object instanceof GeneratedClosure) {
method = getMethodWithCaching(sender, "doCall", arguments, isCallToSuper);
}
if (method==null) {
method = getMethodWithCaching(sender, methodName, arguments, isCallToSuper);
}
MetaClassHelper.unwrap(arguments);
if (method == null)
method = tryListParamMetaMethod(sender, methodName, isCallToSuper, arguments);
final boolean isClosure = object instanceof Closure;
if (isClosure) {
final Closure closure = (Closure) object;
final Object owner = closure.getOwner();
if (CLOSURE_CALL_METHOD.equals(methodName) || CLOSURE_DO_CALL_METHOD.equals(methodName)) {
final Class objectClass = object.getClass();
if (objectClass == MethodClosure.class) {
final MethodClosure mc = (MethodClosure) object;
methodName = mc.getMethod();
final Class ownerClass = owner instanceof Class ? (Class) owner : owner.getClass();
final MetaClass ownerMetaClass = registry.getMetaClass(ownerClass);
return ownerMetaClass.invokeMethod(ownerClass, owner, methodName, arguments, false, false);
} else if (objectClass == CurriedClosure.class) {
final CurriedClosure cc = (CurriedClosure) object;
// change the arguments for an uncurried call
final Object[] curriedArguments = cc.getUncurriedArguments(arguments);
final Class ownerClass = owner instanceof Class ? (Class) owner : owner.getClass();
final MetaClass ownerMetaClass = registry.getMetaClass(ownerClass);
return ownerMetaClass.invokeMethod(owner, methodName, curriedArguments);
}
if (method==null) invokeMissingMethod(object,methodName,arguments);
}
final Object delegate = closure.getDelegate();
final boolean isClosureNotOwner = owner != closure;
final int resolveStrategy = closure.getResolveStrategy();
final Class[] argClasses = MetaClassHelper.convertToTypeArray(arguments);
switch (resolveStrategy) {
case Closure.TO_SELF:
method = closure.getMetaClass().pickMethod(methodName, argClasses);
if (method != null) return method.invoke(closure, arguments);
break;
case Closure.DELEGATE_ONLY:
if (method == null && delegate != closure && delegate != null) {
MetaClass delegateMetaClass = lookupObjectMetaClass(delegate);
method = delegateMetaClass.pickMethod(methodName, argClasses);
if (method != null)
return delegateMetaClass.invokeMethod(delegate, methodName, originalArguments);
else if (delegate != closure && (delegate instanceof GroovyObject)) {
return invokeMethodOnGroovyObject(methodName, originalArguments, delegate);
}
}
break;
case Closure.OWNER_ONLY:
if (method == null && owner != closure) {
MetaClass ownerMetaClass = lookupObjectMetaClass(owner);
return ownerMetaClass.invokeMethod(owner, methodName, originalArguments);
}
break;
case Closure.DELEGATE_FIRST:
if (method == null && delegate != closure && delegate != null) {
MetaClass delegateMetaClass = lookupObjectMetaClass(delegate);
method = delegateMetaClass.pickMethod(methodName, argClasses);
if (method != null)
return delegateMetaClass.invokeMethod(delegate, methodName, originalArguments);
}
if (method == null && owner != closure) {
MetaClass ownerMetaClass = lookupObjectMetaClass(owner);
method = ownerMetaClass.pickMethod(methodName, argClasses);
if (method != null) return ownerMetaClass.invokeMethod(owner, methodName, originalArguments);
}
if (method == null && resolveStrategy != Closure.TO_SELF) {
// still no methods found, test if delegate or owner are GroovyObjects
// and invoke the method on them if so.
MissingMethodException last = null;
if (delegate != closure && (delegate instanceof GroovyObject)) {
try {
return invokeMethodOnGroovyObject(methodName, originalArguments, delegate);
} catch (MissingMethodException mme) {
if (last == null) last = mme;
}
}
if (isClosureNotOwner && (owner instanceof GroovyObject)) {
try {
return invokeMethodOnGroovyObject(methodName, originalArguments, owner);
} catch (MissingMethodException mme) {
last = mme;
}
}
if (last != null) return invokeMissingMethod(object, methodName, originalArguments, last, isCallToSuper);
}
break;
default:
if (method == null && owner != closure) {
MetaClass ownerMetaClass = lookupObjectMetaClass(owner);
method = ownerMetaClass.pickMethod(methodName, argClasses);
if (method != null) return ownerMetaClass.invokeMethod(owner, methodName, originalArguments);
}
if (method == null && delegate != closure && delegate != null) {
MetaClass delegateMetaClass = lookupObjectMetaClass(delegate);
method = delegateMetaClass.pickMethod(methodName, argClasses);
if (method != null)
return delegateMetaClass.invokeMethod(delegate, methodName, originalArguments);
}
if (method == null && resolveStrategy != Closure.TO_SELF) {
// still no methods found, test if delegate or owner are GroovyObjects
// and invoke the method on them if so.
MissingMethodException last = null;
if (isClosureNotOwner && (owner instanceof GroovyObject)) {
try {
return invokeMethodOnGroovyObject(methodName, originalArguments, owner);
} catch (MissingMethodException mme) {
if (methodName.equals(mme.getMethod())) {
if (last == null) last = mme;
} else {
throw mme;
}
}
catch (InvokerInvocationException iie) {
if (iie.getCause() instanceof MissingMethodException) {
MissingMethodException mme = (MissingMethodException) iie.getCause();
if (methodName.equals(mme.getMethod())) {
if (last == null) last = mme;
} else {
throw iie;
}
}
else
throw iie;
}
}
if (delegate != closure && (delegate instanceof GroovyObject)) {
try {
return invokeMethodOnGroovyObject(methodName, originalArguments, delegate);
} catch (MissingMethodException mme) {
last = mme;
}
catch (InvokerInvocationException iie) {
if (iie.getCause() instanceof MissingMethodException) {
last = (MissingMethodException) iie.getCause();
}
else
throw iie;
}
}
if (last != null) return invokeMissingMethod(object, methodName, originalArguments, last, isCallToSuper);
}
}
}
if (method != null) {
return method.doMethodInvoke(object, arguments);
} else {
return invokePropertyOrMissing(object, methodName, originalArguments, fromInsideClass, isCallToSuper);
}
}
private MetaMethod tryListParamMetaMethod(Class sender, String methodName, boolean isCallToSuper, Object[] arguments) {
MetaMethod method = null;
if (arguments.length == 1 && arguments[0] instanceof List) {
Object[] newArguments = ((List) arguments[0]).toArray();
method = getMethodWithCaching(sender, methodName, newArguments, isCallToSuper);
if (method != null) {
method = new TransformMetaMethod(method) {
public Object invoke(Object object, Object[] arguments) {
Object firstArgument = arguments[0];
List list = (List) firstArgument;
arguments = list.toArray();
return super.invoke(object, arguments);
}
};
}
}
return method;
}
private Object invokePropertyOrMissing(Object object, String methodName, Object[] originalArguments, boolean fromInsideClass, boolean isCallToSuper) {
// if no method was found, try to find a closure defined as a field of the class and run it
Object value = null;
final MetaProperty metaProperty = this.getMetaProperty(methodName, false);
if (metaProperty != null)
value = metaProperty.getProperty(object);
else {
if (object instanceof Map)
value = ((Map)object).get(methodName);
}
if (value instanceof Closure) { // This test ensures that value != this If you ever change this ensure that value != this
Closure closure = (Closure) value;
MetaClass delegateMetaClass = closure.getMetaClass();
return delegateMetaClass.invokeMethod(closure.getClass(), closure, CLOSURE_DO_CALL_METHOD, originalArguments, false, fromInsideClass);
}
if (object instanceof Script) {
Object bindingVar = ((Script) object).getBinding().getVariables().get(methodName);
if (bindingVar != null) {
MetaClass bindingVarMC = ((MetaClassRegistryImpl) registry).getMetaClass(bindingVar);
return bindingVarMC.invokeMethod(bindingVar, CLOSURE_CALL_METHOD, originalArguments);
}
}
return invokeMissingMethod(object, methodName, originalArguments, null, isCallToSuper);
}
private MetaClass lookupObjectMetaClass(Object object) {
if (object instanceof GroovyObject) {
GroovyObject go = (GroovyObject) object;
return go.getMetaClass();
}
Class ownerClass = object.getClass();
if (ownerClass == Class.class) ownerClass = (Class) object;
MetaClass metaClass = registry.getMetaClass(ownerClass);
return metaClass;
}
private Object invokeMethodOnGroovyObject(String methodName, Object[] originalArguments, Object owner) {
GroovyObject go = (GroovyObject) owner;
return go.invokeMethod(methodName, originalArguments);
}
public MetaMethod getMethodWithCaching(Class sender, String methodName, Object[] arguments, boolean isCallToSuper) {
// let's try use the cache to find the method
if (!isCallToSuper && GroovyCategorySupport.hasCategoryInCurrentThread()) {
return getMethodWithoutCaching(sender, methodName, MetaClassHelper.convertToTypeArray(arguments), isCallToSuper);
} else {
final MetaMethodIndex.Entry e = metaMethodIndex.getMethods(sender, methodName);
if (e == null)
return null;
return isCallToSuper ? getSuperMethodWithCaching(arguments, e) : getNormalMethodWithCaching(arguments, e);
}
}
private static boolean sameClasses(Class[] params, Class[] arguments) {
// we do here a null check because the params field might not have been set yet
if (params == null) return false;
if (params.length != arguments.length)
return false;
for (int i = params.length - 1; i >= 0; i--) {
Object arg = arguments[i];
if (arg != null) {
if (params[i] != arguments[i]) return false;
} else return false;
}
return true;
}
// This method should be called by CallSite only
private MetaMethod getMethodWithCachingInternal (Class sender, CallSite site, Class [] params) {
if (GroovyCategorySupport.hasCategoryInCurrentThread())
return getMethodWithoutCaching(sender, site.getName (), params, false);
final MetaMethodIndex.Entry e = metaMethodIndex.getMethods(sender, site.getName());
if (e == null) {
return null;
}
MetaMethodIndex.CacheEntry cacheEntry;
final Object methods = e.methods;
if (methods == null)
return null;
cacheEntry = e.cachedMethod;
if (cacheEntry != null && (sameClasses(cacheEntry.params, params))) {
return cacheEntry.method;
}
cacheEntry = new MetaMethodIndex.CacheEntry (params, (MetaMethod) chooseMethod(e.name, methods, params));
e.cachedMethod = cacheEntry;
return cacheEntry.method;
}
private MetaMethod getSuperMethodWithCaching(Object[] arguments, MetaMethodIndex.Entry e) {
MetaMethodIndex.CacheEntry cacheEntry;
if (e.methodsForSuper == null)
return null;
cacheEntry = e.cachedMethodForSuper;
if (cacheEntry != null &&
MetaClassHelper.sameClasses(cacheEntry.params, arguments, e.methodsForSuper instanceof MetaMethod))
{
MetaMethod method = cacheEntry.method;
if (method!=null) return method;
}
final Class[] classes = MetaClassHelper.convertToTypeArray(arguments);
MetaMethod method = (MetaMethod) chooseMethod(e.name, e.methodsForSuper, classes);
cacheEntry = new MetaMethodIndex.CacheEntry (classes, method.isAbstract()?null:method);
e.cachedMethodForSuper = cacheEntry;
return cacheEntry.method;
}
private MetaMethod getNormalMethodWithCaching(Object[] arguments, MetaMethodIndex.Entry e) {
MetaMethodIndex.CacheEntry cacheEntry;
final Object methods = e.methods;
if (methods == null)
return null;
cacheEntry = e.cachedMethod;
if (cacheEntry != null &&
MetaClassHelper.sameClasses(cacheEntry.params, arguments, methods instanceof MetaMethod))
{
MetaMethod method = cacheEntry.method;
if (method!=null) return method;
}
final Class[] classes = MetaClassHelper.convertToTypeArray(arguments);
cacheEntry = new MetaMethodIndex.CacheEntry (classes, (MetaMethod) chooseMethod(e.name, methods, classes));
e.cachedMethod = cacheEntry;
return cacheEntry.method;
}
public Constructor retrieveConstructor(Class[] arguments) {
CachedConstructor constructor = (CachedConstructor) chooseMethod("", constructors, arguments);
if (constructor != null) {
return constructor.cachedConstructor;
}
constructor = (CachedConstructor) chooseMethod("", constructors, arguments);
if (constructor != null) {
return constructor.cachedConstructor;
}
return null;
}
public MetaMethod retrieveStaticMethod(String methodName, Object[] arguments) {
final MetaMethodIndex.Entry e = metaMethodIndex.getMethods(theClass, methodName);
MetaMethodIndex.CacheEntry cacheEntry;
if (e != null) {
cacheEntry = e.cachedStaticMethod;
if (cacheEntry != null &&
MetaClassHelper.sameClasses(cacheEntry.params, arguments, e.staticMethods instanceof MetaMethod))
{
return cacheEntry.method;
}
final Class[] classes = MetaClassHelper.convertToTypeArray(arguments);
cacheEntry = new MetaMethodIndex.CacheEntry (classes, pickStaticMethod(methodName, classes));
e.cachedStaticMethod = cacheEntry;
return cacheEntry.method;
}
else
return pickStaticMethod(methodName, MetaClassHelper.convertToTypeArray(arguments));
}
public MetaMethod getMethodWithoutCaching(Class sender, String methodName, Class[] arguments, boolean isCallToSuper) {
MetaMethod method = null;
Object methods = getMethods(sender, methodName, isCallToSuper);
if (methods != null) {
method = (MetaMethod) chooseMethod(methodName, methods, arguments);
}
return method;
}
public Object invokeStaticMethod(Object object, String methodName, Object[] arguments) {
checkInitalised();
final Class sender = object instanceof Class ? (Class) object : object.getClass();
if (sender != theClass) {
MetaClass mc = registry.getMetaClass(sender);
return mc.invokeStaticMethod(sender, methodName, arguments);
}
if (sender == Class.class) {
return invokeMethod(object, methodName, arguments);
}
if (arguments == null) arguments = EMPTY_ARGUMENTS;
// Class[] argClasses = MetaClassHelper.convertToTypeArray(arguments);
MetaMethod method = retrieveStaticMethod(methodName, arguments);
// let's try use the cache to find the method
if (method != null) {
MetaClassHelper.unwrap(arguments);
return method.doMethodInvoke(object, arguments);
}
Object prop = null;
try {
prop = getProperty(theClass, theClass, methodName, false, false);
} catch (MissingPropertyException mpe) {
// ignore
}
if (prop instanceof Closure) {
return invokeStaticClosureProperty(arguments, prop);
}
Object[] originalArguments = (Object[]) arguments.clone();
MetaClassHelper.unwrap(arguments);
Class superClass = sender.getSuperclass();
Class[] argClasses = MetaClassHelper.convertToTypeArray(arguments);
while (superClass != Object.class && superClass != null) {
MetaClass mc = registry.getMetaClass(superClass);
method = mc.getStaticMetaMethod(methodName, argClasses);
if (method != null) return method.doMethodInvoke(object, arguments);
try {
prop = mc.getProperty(superClass, superClass, methodName, false, false);
} catch (MissingPropertyException mpe) {
// ignore
}
if (prop instanceof Closure) {
return invokeStaticClosureProperty(originalArguments, prop);
}
superClass = superClass.getSuperclass();
}
if (prop != null) {
MetaClass propMC = registry.getMetaClass(prop.getClass());
return propMC.invokeMethod(prop, CLOSURE_CALL_METHOD, arguments);
}
return invokeStaticMissingMethod(sender, methodName, arguments);
}
private Object invokeStaticClosureProperty(Object[] originalArguments, Object prop) {
Closure closure = (Closure) prop;
MetaClass delegateMetaClass = closure.getMetaClass();
return delegateMetaClass.invokeMethod(closure.getClass(), closure, CLOSURE_DO_CALL_METHOD, originalArguments, false, false);
}
private Object invokeStaticMissingMethod(Class sender, String methodName, Object[] arguments) {
MetaMethod metaMethod = getStaticMetaMethod(STATIC_METHOD_MISSING, METHOD_MISSING_ARGS);
if (metaMethod != null) {
return metaMethod.invoke(sender, new Object[]{methodName, arguments});
}
throw new MissingMethodException(methodName, sender, arguments, true);
}
private MetaMethod pickStaticMethod(String methodName, Class[] arguments) {
MetaMethod method = null;
MethodSelectionException mse = null;
Object methods = getStaticMethods(theClass, methodName);
if (!(methods instanceof FastArray) || !((FastArray)methods).isEmpty()) {
try {
method = (MetaMethod) chooseMethod(methodName, methods, arguments);
} catch(MethodSelectionException msex) {
mse = msex;
}
}
if (method == null && theClass != Class.class) {
MetaClass classMetaClass = registry.getMetaClass(Class.class);
method = classMetaClass.pickMethod(methodName, arguments);
}
if (method == null) {
method = (MetaMethod) chooseMethod(methodName, methods, MetaClassHelper.convertToTypeArray(arguments));
}
if (method == null && mse != null) {
throw mse;
} else {
return method;
}
}
public Object invokeConstructor(Object[] arguments) {
return invokeConstructor(theClass, arguments);
}
public int selectConstructorAndTransformArguments(int numberOfConstructors, Object[] arguments) {
//TODO: that is just a quick prototype, not the real thing!
if (numberOfConstructors != constructors.size()) {
throw new IncompatibleClassChangeError("the number of constructors during runtime and compile time for " +
this.theClass.getName() + " do not match. Expected " + numberOfConstructors + " but got " + constructors.size());
}
if (arguments == null) arguments = EMPTY_ARGUMENTS;
Class[] argClasses = MetaClassHelper.convertToTypeArray(arguments);
MetaClassHelper.unwrap(arguments);
CachedConstructor constructor = (CachedConstructor) chooseMethod("", constructors, argClasses);
if (constructor == null) {
constructor = (CachedConstructor) chooseMethod("", constructors, argClasses);
}
if (constructor == null) {
throw new GroovyRuntimeException(
"Could not find matching constructor for: "
+ theClass.getName()
+ "(" + InvokerHelper.toTypeString(arguments) + ")");
}
List l = new ArrayList(constructors.toList());
Comparator comp = new Comparator() {
public int compare(Object arg0, Object arg1) {
CachedConstructor c0 = (CachedConstructor) arg0;
CachedConstructor c1 = (CachedConstructor) arg1;
String descriptor0 = BytecodeHelper.getMethodDescriptor(Void.TYPE, c0.getNativeParameterTypes());
String descriptor1 = BytecodeHelper.getMethodDescriptor(Void.TYPE, c1.getNativeParameterTypes());
return descriptor0.compareTo(descriptor1);
}
};
Collections.sort(l, comp);
int found = -1;
for (int i = 0; i < l.size(); i++) {
if (l.get(i) != constructor) continue;
found = i;
break;
}
// NOTE: must be changed to "1 |" if constructor was vargs
return 0 | (found << 8);
}
/**
* checks if the initialisation of the class id complete.
* This method should be called as a form of assert, it is no
* way to test if there is still initialisation work to be done.
* Such logic must be implemented in a different way.
*
* @throws IllegalStateException if the initialisation is incomplete yet
*/
protected void checkInitalised() {
if (!isInitialized())
throw new IllegalStateException(
"initialize must be called for meta " +
"class of " + theClass +
"(" + this.getClass() + ") " +
"to complete initialisation process " +
"before any invocation or field/property " +
"access can be done");
}
/**
* This is a helper class introduced in Groovy 2.1.0, which is used only by
* indy. This class is for internal use only.
* @author Jochen "blackdrag" Theodorou
* @since Groovy 2.1.0
*/
public final static class MetaConstructor extends MetaMethod {
private final CachedConstructor cc;
private final boolean beanConstructor;
private MetaConstructor(CachedConstructor cc, boolean bean) {
super(cc.getNativeParameterTypes());
this.setParametersTypes(cc.getParameterTypes());
this.cc = cc;
this.beanConstructor = bean;
}
@Override
public int getModifiers() { return cc.getModifiers(); }
@Override
public String getName() { return ""; }
@Override
public Class getReturnType() { return cc.getCachedClass().getTheClass(); }
@Override
public CachedClass getDeclaringClass() { return cc.getCachedClass(); }
@Override
public Object invoke(Object object, Object[] arguments) {
return cc.doConstructorInvoke(arguments);
}
public CachedConstructor getCachedConstrcutor() { return cc; }
public boolean isBeanConstructor() { return beanConstructor; }
}
/**
* This is a helper method added in Groovy 2.1.0, which is used only by indy.
* This method is for internal use only.
* @author Jochen "blackdrag" Theodorou
* @since Groovy 2.1.0
*/
public MetaMethod retrieveConstructor(Object[] arguments) {
checkInitalised();
if (arguments == null) arguments = EMPTY_ARGUMENTS;
Class[] argClasses = MetaClassHelper.convertToTypeArray(arguments);
MetaClassHelper.unwrap(arguments);
Object res = chooseMethod("", constructors, argClasses);
if (res instanceof MetaMethod) return (MetaMethod) res;
CachedConstructor constructor = (CachedConstructor) res;
if (constructor != null) return new MetaConstructor(constructor, false);
if (arguments.length == 1 && arguments[0] instanceof Map) {
res = chooseMethod("", constructors, MetaClassHelper.EMPTY_TYPE_ARRAY);
} else if (
arguments.length == 2 && arguments[1] instanceof Map &&
theClass.getEnclosingClass()!=null &&
theClass.getEnclosingClass().isAssignableFrom(argClasses[0]))
{
res = chooseMethod("", constructors, new Class[]{argClasses[0]});
}
if (res instanceof MetaMethod) return (MetaMethod) res;
constructor = (CachedConstructor) res;
if (constructor != null) return new MetaConstructor(constructor, true);
return null;
}
private Object invokeConstructor(Class at, Object[] arguments) {
checkInitalised();
if (arguments == null) arguments = EMPTY_ARGUMENTS;
Class[] argClasses = MetaClassHelper.convertToTypeArray(arguments);
MetaClassHelper.unwrap(arguments);
CachedConstructor constructor = (CachedConstructor) chooseMethod("", constructors, argClasses);
if (constructor != null) {
return constructor.doConstructorInvoke(arguments);
}
if (arguments.length == 1) {
Object firstArgument = arguments[0];
if (firstArgument instanceof Map) {
constructor = (CachedConstructor) chooseMethod("", constructors, MetaClassHelper.EMPTY_TYPE_ARRAY);
if (constructor != null) {
Object bean = constructor.doConstructorInvoke(MetaClassHelper.EMPTY_ARRAY);
setProperties(bean, ((Map) firstArgument));
return bean;
}
}
}
throw new GroovyRuntimeException(
"Could not find matching constructor for: "
+ theClass.getName()
+ "(" + InvokerHelper.toTypeString(arguments) + ")");
}
/**
* Sets a number of bean properties from the given Map where the keys are
* the String names of properties and the values are the values of the
* properties to set
*/
public void setProperties(Object bean, Map map) {
checkInitalised();
for (Iterator iter = map.entrySet().iterator(); iter.hasNext();) {
Map.Entry entry = (Map.Entry) iter.next();
String key = entry.getKey().toString();
Object value = entry.getValue();
setProperty(bean, key, value);
}
}
/**
* @return the given property's value on the object
*/
public Object getProperty(Class sender, Object object, String name, boolean useSuper, boolean fromInsideClass) {
//----------------------------------------------------------------------
// handling of static
//----------------------------------------------------------------------
boolean isStatic = theClass != Class.class && object instanceof Class;
if (isStatic && object != theClass) {
MetaClass mc = registry.getMetaClass((Class) object);
return mc.getProperty(sender, object, name, useSuper, false);
}
checkInitalised();
//----------------------------------------------------------------------
// turn getProperty on a Map to get on the Map itself
//----------------------------------------------------------------------
if (!isStatic && this.isMap) {
return ((Map) object).get(name);
}
MetaMethod method = null;
Object[] arguments = EMPTY_ARGUMENTS;
//----------------------------------------------------------------------
// getter
//----------------------------------------------------------------------
MetaProperty mp = getMetaProperty(sender, name, useSuper, isStatic);
if (mp != null) {
if (mp instanceof MetaBeanProperty) {
MetaBeanProperty mbp = (MetaBeanProperty) mp;
method = mbp.getGetter();
mp = mbp.getField();
}
}
// check for a category method named like a getter
if (!useSuper && !isStatic && GroovyCategorySupport.hasCategoryInCurrentThread()) {
String getterName = GroovyCategorySupport.getPropertyCategoryGetterName(name);
if (getterName != null) {
MetaMethod categoryMethod = getCategoryMethodGetter(sender, getterName, false);
if (categoryMethod != null) method = categoryMethod;
}
}
//----------------------------------------------------------------------
// field
//----------------------------------------------------------------------
if (method == null && mp != null) {
try {
return mp.getProperty(object);
} catch (IllegalArgumentException e) {
// can't access the field directly but there may be a getter
mp = null;
}
}
//----------------------------------------------------------------------
// generic get method
//----------------------------------------------------------------------
// check for a generic get method provided through a category
if (method == null && !useSuper && !isStatic && GroovyCategorySupport.hasCategoryInCurrentThread()) {
method = getCategoryMethodGetter(sender, "get", true);
if (method != null) arguments = new Object[]{name};
}
// the generic method is valid, if available (!=null), if static or
// if it is not static and we do no static access
if (method == null && genericGetMethod != null && !(!genericGetMethod.isStatic() && isStatic)) {
arguments = new Object[]{name};
method = genericGetMethod;
}
//----------------------------------------------------------------------
// special cases
//----------------------------------------------------------------------
if (method == null) {
/** todo these special cases should be special MetaClasses maybe */
if (theClass != Class.class && object instanceof Class) {
MetaClass mc = registry.getMetaClass(Class.class);
return mc.getProperty(Class.class, object, name, useSuper, false);
} else if (object instanceof Collection) {
return DefaultGroovyMethods.getAt((Collection) object, name);
} else if (object instanceof Object[]) {
return DefaultGroovyMethods.getAt(Arrays.asList((Object[]) object), name);
} else {
MetaMethod addListenerMethod = (MetaMethod) listeners.get(name);
if (addListenerMethod != null) {
//TODO: one day we could try return the previously registered Closure listener for easy removal
return null;
}
}
} else {
//----------------------------------------------------------------------
// executing the getter method
//----------------------------------------------------------------------
return method.doMethodInvoke(object, arguments);
}
//----------------------------------------------------------------------
// error due to missing method/field
//----------------------------------------------------------------------
if (isStatic || object instanceof Class)
return invokeStaticMissingProperty(object, name, null, true);
else
return invokeMissingProperty(object, name, null, true);
}
public MetaProperty getEffectiveGetMetaProperty(final Class sender, final Object object, String name, final boolean useSuper) {
//----------------------------------------------------------------------
// handling of static
//----------------------------------------------------------------------
boolean isStatic = theClass != Class.class && object instanceof Class;
if (isStatic && object != theClass) {
return new MetaProperty(name, Object.class) {
final MetaClass mc = registry.getMetaClass((Class) object);
public Object getProperty(Object object) {
return mc.getProperty(sender, object, name, useSuper,false);
}
public void setProperty(Object object, Object newValue) {
throw new UnsupportedOperationException();
}
};
}
checkInitalised();
//----------------------------------------------------------------------
// turn getProperty on a Map to get on the Map itself
//----------------------------------------------------------------------
if (!isStatic && this.isMap) {
return new MetaProperty(name, Object.class) {
public Object getProperty(Object object) {
return ((Map) object).get(name);
}
public void setProperty(Object object, Object newValue) {
throw new UnsupportedOperationException();
}
};
}
MetaMethod method = null;
//----------------------------------------------------------------------
// getter
//----------------------------------------------------------------------
MetaProperty mp = getMetaProperty(sender, name, useSuper, isStatic);
if (mp != null) {
if (mp instanceof MetaBeanProperty) {
MetaBeanProperty mbp = (MetaBeanProperty) mp;
method = mbp.getGetter();
mp = mbp.getField();
}
}
// check for a category method named like a getter
if (!useSuper && !isStatic && GroovyCategorySupport.hasCategoryInCurrentThread()) {
String getterName = GroovyCategorySupport.getPropertyCategoryGetterName(name);
if (getterName != null) {
MetaMethod categoryMethod = getCategoryMethodGetter(sender, getterName, false);
if (categoryMethod != null)
method = categoryMethod;
}
}
//----------------------------------------------------------------------
// field
//----------------------------------------------------------------------
if (method != null)
return new GetBeanMethodMetaProperty(name, method);
if (mp != null) {
return mp;
// try {
// return mp.getProperty(object);
// } catch (IllegalArgumentException e) {
// // can't access the field directly but there may be a getter
// mp = null;
// }
}
//----------------------------------------------------------------------
// generic get method
//----------------------------------------------------------------------
// check for a generic get method provided through a category
if (!useSuper && !isStatic && GroovyCategorySupport.hasCategoryInCurrentThread()) {
method = getCategoryMethodGetter(sender, "get", true);
if (method != null)
return new GetMethodMetaProperty(name, method);
}
// the generic method is valid, if available (!=null), if static or
// if it is not static and we do no static access
if (genericGetMethod != null && !(!genericGetMethod.isStatic() && isStatic)) {
method = genericGetMethod;
if (method != null)
return new GetMethodMetaProperty(name, method);
}
//----------------------------------------------------------------------
// special cases
//----------------------------------------------------------------------
/** todo these special cases should be special MetaClasses maybe */
if (theClass != Class.class && object instanceof Class) {
return new MetaProperty(name, Object.class) {
public Object getProperty(Object object) {
MetaClass mc = registry.getMetaClass(Class.class);
return mc.getProperty(Class.class, object, name, useSuper, false);
}
public void setProperty(Object object, Object newValue) {
throw new UnsupportedOperationException();
}
};
} else if (object instanceof Collection) {
return new MetaProperty(name, Object.class) {
public Object getProperty(Object object) {
return DefaultGroovyMethods.getAt((Collection) object, name);
}
public void setProperty(Object object, Object newValue) {
throw new UnsupportedOperationException();
}
};
} else if (object instanceof Object[]) {
return new MetaProperty(name, Object.class) {
public Object getProperty(Object object) {
return DefaultGroovyMethods.getAt(Arrays.asList((Object[]) object), name);
}
public void setProperty(Object object, Object newValue) {
throw new UnsupportedOperationException();
}
};
} else {
MetaMethod addListenerMethod = (MetaMethod) listeners.get(name);
if (addListenerMethod != null) {
//TODO: one day we could try return the previously registered Closure listener for easy removal
return new MetaProperty(name, Object.class) {
public Object getProperty(Object object) {
return null;
}
public void setProperty(Object object, Object newValue) {
throw new UnsupportedOperationException();
}
};
}
}
//----------------------------------------------------------------------
// error due to missing method/field
//----------------------------------------------------------------------
if (isStatic || object instanceof Class)
return new MetaProperty(name, Object.class) {
public Object getProperty(Object object) {
return invokeStaticMissingProperty(object, name, null, true);
}
public void setProperty(Object object, Object newValue) {
throw new UnsupportedOperationException();
}
};
else
return new MetaProperty(name, Object.class) {
public Object getProperty(Object object) {
return invokeMissingProperty(object, name, null, true);
}
public void setProperty(Object object, Object newValue) {
throw new UnsupportedOperationException();
}
};
}
private MetaMethod getCategoryMethodGetter(Class sender, String name, boolean useLongVersion) {
List possibleGenericMethods = GroovyCategorySupport.getCategoryMethods(name);
if (possibleGenericMethods != null) {
for (Iterator iter = possibleGenericMethods.iterator(); iter.hasNext();) {
MetaMethod mmethod = (MetaMethod) iter.next();
if (!mmethod.getDeclaringClass().getTheClass().isAssignableFrom(sender))
continue;
CachedClass[] paramTypes = mmethod.getParameterTypes();
if (useLongVersion) {
if (paramTypes.length == 1 && paramTypes[0].getTheClass() == String.class) {
return mmethod;
}
} else {
if (paramTypes.length == 0) return mmethod;
}
}
}
return null;
}
private MetaMethod getCategoryMethodSetter(Class sender, String name, boolean useLongVersion) {
List possibleGenericMethods = GroovyCategorySupport.getCategoryMethods(name);
if (possibleGenericMethods != null) {
for (Iterator iter = possibleGenericMethods.iterator(); iter.hasNext();) {
MetaMethod mmethod = (MetaMethod) iter.next();
if (!mmethod.getDeclaringClass().getTheClass().isAssignableFrom(sender))
continue;
CachedClass[] paramTypes = mmethod.getParameterTypes();
if (useLongVersion) {
if (paramTypes.length == 2 && paramTypes[0].getTheClass() == String.class) {
return mmethod;
}
} else {
if (paramTypes.length == 1) return mmethod;
}
}
}
return null;
}
/**
* Get all the properties defined for this type
*
* @return a list of MetaProperty objects
*/
public List getProperties() {
checkInitalised();
SingleKeyHashMap propertyMap = classPropertyIndex.getNullable(theCachedClass);
// simply return the values of the metaproperty map as a List
List ret = new ArrayList(propertyMap.size());
for (ComplexKeyHashMap.EntryIterator iter = propertyMap.getEntrySetIterator(); iter.hasNext();) {
MetaProperty element = (MetaProperty) ((SingleKeyHashMap.Entry) iter.next()).value;
if (element instanceof CachedField) continue;
// filter out DGM beans
if (element instanceof MetaBeanProperty) {
MetaBeanProperty mp = (MetaBeanProperty) element;
boolean setter = true;
boolean getter = true;
if (mp.getGetter() == null || mp.getGetter() instanceof GeneratedMetaMethod || mp.getGetter() instanceof NewInstanceMetaMethod) {
getter = false;
}
if (mp.getSetter() == null || mp.getSetter() instanceof GeneratedMetaMethod || mp.getSetter() instanceof NewInstanceMetaMethod) {
setter = false;
}
if (!setter && !getter) continue;
// TODO: I (ait) don't know why these strange tricks needed and comment following as it effects some Grails tests
// if (!setter && mp.getSetter() != null) {
// element = new MetaBeanProperty(mp.getName(), mp.getType(), mp.getGetter(), null);
// }
// if (!getter && mp.getGetter() != null) {
// element = new MetaBeanProperty(mp.getName(), mp.getType(), null, mp.getSetter());
// }
}
ret.add(element);
}
return ret;
}
private MetaMethod findPropertyMethod(Object methodOrList, boolean isGetter, boolean booleanGetter) {
if (methodOrList == null)
return null;
Object ret = null;
if (methodOrList instanceof MetaMethod) {
MetaMethod element = (MetaMethod)methodOrList;
if (!isGetter &&
//(element.getReturnType() == Void.class || element.getReturnType() == Void.TYPE) &&
element.getParameterTypes().length == 1) {
ret = addElementToList(ret, element);
}
if (isGetter &&
!(element.getReturnType() == Void.class || element.getReturnType() == Void.TYPE) &&
(!booleanGetter || element.getReturnType() == Boolean.class || element.getReturnType() == Boolean.TYPE) &&
element.getParameterTypes().length == 0) {
ret = addElementToList(ret, element);
}
}
else {
FastArray methods = (FastArray) methodOrList;
final int len = methods.size();
final Object[] data = methods.getArray();
for (int i = 0; i != len; ++i) {
MetaMethod element = (MetaMethod) data[i];
if (!isGetter &&
//(element.getReturnType() == Void.class || element.getReturnType() == Void.TYPE) &&
element.getParameterTypes().length == 1) {
ret = addElementToList(ret, element);
}
if (isGetter &&
!(element.getReturnType() == Void.class || element.getReturnType() == Void.TYPE) &&
element.getParameterTypes().length == 0) {
ret = addElementToList(ret, element);
}
}
}
if (ret == null) return null;
if (ret instanceof MetaMethod) return (MetaMethod) ret;
// we found multiple matching methods
// this is a problem, because we can use only one
// if it is a getter, then use the most general return
// type to decide which method to use. If it is a setter
// we use the type of the first parameter
MetaMethod method = null;
int distance = -1;
for (Iterator iter = ((List) ret).iterator(); iter.hasNext();) {
MetaMethod element = (MetaMethod) iter.next();
Class c;
if (isGetter) {
c = element.getReturnType();
} else {
c = element.getParameterTypes()[0].getTheClass();
}
int localDistance = distanceToObject(c);
//TODO: maybe implement the case localDistance==distance
if (distance == -1 || distance > localDistance) {
distance = localDistance;
method = element;
}
}
return method;
}
private Object addElementToList(Object ret, MetaMethod element) {
if (ret == null)
ret = element;
else if (ret instanceof List)
((List) ret).add(element);
else {
List list = new LinkedList();
list.add(ret);
list.add(element);
ret = list;
}
return ret;
}
private static int distanceToObject(Class c) {
int count;
for (count = 0; c != null; count++) {
c = c.getSuperclass();
}
return count;
}
/**
* This will build up the property map (Map of MetaProperty objects, keyed on
* property name).
*/
@SuppressWarnings("unchecked")
private void setupProperties(PropertyDescriptor[] propertyDescriptors) {
if (theCachedClass.isInterface) {
LinkedList superClasses = new LinkedList();
superClasses.add(ReflectionCache.OBJECT_CLASS);
Set interfaces = theCachedClass.getInterfaces();
LinkedList superInterfaces = new LinkedList(interfaces);
// sort interfaces so that we may ensure a deterministic behaviour in case of
// ambiguous fields (class implementing two interfaces using the same field)
if (superInterfaces.size()>1) {
Collections.sort(superInterfaces, CACHED_CLASS_NAME_COMPARATOR);
}
SingleKeyHashMap iPropertyIndex = classPropertyIndex.getNotNull(theCachedClass);
for (CachedClass iclass : superInterfaces) {
SingleKeyHashMap sPropertyIndex = classPropertyIndex.getNotNull(iclass);
copyNonPrivateFields(sPropertyIndex, iPropertyIndex);
addFields(iclass, iPropertyIndex);
}
addFields(theCachedClass, iPropertyIndex);
applyPropertyDescriptors(propertyDescriptors);
applyStrayPropertyMethods(superClasses, classPropertyIndex, true);
makeStaticPropertyIndex();
} else {
LinkedList superClasses = getSuperClasses();
LinkedList interfaces = new LinkedList(theCachedClass.getInterfaces());
// sort interfaces so that we may ensure a deterministic behaviour in case of
// ambiguous fields (class implementing two interfaces using the same field)
if (interfaces.size()>1) {
Collections.sort(interfaces, CACHED_CLASS_NAME_COMPARATOR);
}
// if this an Array, then add the special read-only "length" property
if (theCachedClass.isArray) {
SingleKeyHashMap map = new SingleKeyHashMap();
map.put("length", arrayLengthProperty);
classPropertyIndex.put(theCachedClass, map);
}
inheritStaticInterfaceFields(superClasses, new LinkedHashSet(interfaces));
inheritFields(superClasses);
applyPropertyDescriptors(propertyDescriptors);
applyStrayPropertyMethods(superClasses, classPropertyIndex, true);
applyStrayPropertyMethods(superClasses, classPropertyIndexForSuper, false);
copyClassPropertyIndexForSuper(classPropertyIndexForSuper);
makeStaticPropertyIndex();
}
}
private void makeStaticPropertyIndex() {
SingleKeyHashMap propertyMap = classPropertyIndex.getNotNull(theCachedClass);
for (ComplexKeyHashMap.EntryIterator iter = propertyMap.getEntrySetIterator(); iter.hasNext();) {
SingleKeyHashMap.Entry entry = ((SingleKeyHashMap.Entry) iter.next());
MetaProperty mp = (MetaProperty) entry.getValue();
if (mp instanceof CachedField) {
CachedField mfp = (CachedField) mp;
if (!mfp.isStatic()) continue;
} else if (mp instanceof MetaBeanProperty) {
MetaProperty result = establishStaticMetaProperty(mp);
if (result == null) continue;
else {
mp = result;
}
} else {
continue; // ignore all other types
}
staticPropertyIndex.put(entry.getKey(), mp);
}
}
private MetaProperty establishStaticMetaProperty(MetaProperty mp) {
MetaBeanProperty mbp = (MetaBeanProperty) mp;
MetaProperty result = null;
final MetaMethod getterMethod = mbp.getGetter();
final MetaMethod setterMethod = mbp.getSetter();
final CachedField metaField = mbp.getField();
boolean getter = getterMethod == null || getterMethod.isStatic();
boolean setter = setterMethod == null || setterMethod.isStatic();
boolean field = metaField == null || metaField.isStatic();
if (!getter && !setter && !field) {
return result;
} else {
final String propertyName = mbp.getName();
final Class propertyType = mbp.getType();
if (setter && getter) {
if (field) {
result = mbp; // nothing to do
} else {
result = new MetaBeanProperty(propertyName, propertyType, getterMethod, setterMethod);
}
} else if (getter && !setter) {
if (getterMethod == null) {
result = metaField;
} else {
MetaBeanProperty newmp = new MetaBeanProperty(propertyName, propertyType, getterMethod, null);
if (field) newmp.setField(metaField);
result = newmp;
}
} else if (setter && !getter) {
if (setterMethod == null) {
result = metaField;
} else {
MetaBeanProperty newmp = new MetaBeanProperty(propertyName, propertyType, null, setterMethod);
if (field) newmp.setField(metaField);
result = newmp;
}
} else
result = metaField;
}
return result;
}
private void copyClassPropertyIndexForSuper(Index dest) {
for (ComplexKeyHashMap.EntryIterator iter = classPropertyIndex.getEntrySetIterator(); iter.hasNext();) {
SingleKeyHashMap.Entry entry = (SingleKeyHashMap.Entry) iter.next();
SingleKeyHashMap newVal = new SingleKeyHashMap();
dest.put((CachedClass) entry.getKey(), newVal);
}
}
private void inheritStaticInterfaceFields(LinkedList superClasses, Set interfaces) {
for (Iterator interfaceIter = interfaces.iterator(); interfaceIter.hasNext();) {
CachedClass iclass = (CachedClass) interfaceIter.next();
SingleKeyHashMap iPropertyIndex = classPropertyIndex.getNotNull(iclass);
addFields(iclass, iPropertyIndex);
for (Iterator classIter = superClasses.iterator(); classIter.hasNext();) {
CachedClass sclass = (CachedClass) classIter.next();
if (!iclass.getTheClass().isAssignableFrom(sclass.getTheClass())) continue;
SingleKeyHashMap sPropertyIndex = classPropertyIndex.getNotNull(sclass);
copyNonPrivateFields(iPropertyIndex, sPropertyIndex);
}
}
}
private void inheritFields(LinkedList superClasses) {
SingleKeyHashMap last = null;
for (CachedClass klass : superClasses) {
SingleKeyHashMap propertyIndex = classPropertyIndex.getNotNull(klass);
if (last != null) {
copyNonPrivateFields(last, propertyIndex);
}
last = propertyIndex;
addFields(klass, propertyIndex);
}
}
private void addFields(final CachedClass klass, SingleKeyHashMap propertyIndex) {
CachedField[] fields = klass.getFields();
for (CachedField field : fields) {
propertyIndex.put(field.getName(), field);
}
}
private void copyNonPrivateFields(SingleKeyHashMap from, SingleKeyHashMap to) {
for (ComplexKeyHashMap.EntryIterator iter = from.getEntrySetIterator(); iter.hasNext();) {
SingleKeyHashMap.Entry entry = (SingleKeyHashMap.Entry) iter.next();
CachedField mfp = (CachedField) entry.getValue();
if (!Modifier.isPublic(mfp.getModifiers()) && !Modifier.isProtected(mfp.getModifiers())) continue;
to.put(entry.getKey(), mfp);
}
}
private void applyStrayPropertyMethods(LinkedList superClasses, Index classPropertyIndex, boolean isThis) {
// now look for any stray getters that may be used to define a property
for (CachedClass klass : superClasses) {
MetaMethodIndex.Header header = metaMethodIndex.getHeader(klass.getTheClass());
SingleKeyHashMap propertyIndex = classPropertyIndex.getNotNull(klass);
for (MetaMethodIndex.Entry e = header.head; e != null; e = e.nextClassEntry) {
String methodName = e.name;
// name too short?
if (methodName.length() < 3 ||
(!methodName.startsWith("is") && methodName.length() < 4)) continue;
// possible getter/setter?
boolean isGetter = methodName.startsWith("get") || methodName.startsWith("is");
boolean isBooleanGetter = methodName.startsWith("is");
boolean isSetter = methodName.startsWith("set");
if (!isGetter && !isSetter) continue;
MetaMethod propertyMethod = findPropertyMethod(isThis ? e.methods : e.methodsForSuper, isGetter, isBooleanGetter);
if (propertyMethod == null) continue;
String propName = getPropName(methodName);
createMetaBeanProperty(propertyIndex, propName, isGetter, propertyMethod);
}
}
}
private static final HashMap propNames = new HashMap(1024);
private String getPropName(String methodName) {
String name = propNames.get(methodName);
if (name != null)
return name;
synchronized (propNames) {
// assume "is" or "[gs]et"
String stripped = methodName.startsWith("is") ? methodName.substring(2) : methodName.substring(3);
String propName = java.beans.Introspector.decapitalize(stripped);
propNames.put(methodName, propName);
return propName;
}
}
private void createMetaBeanProperty(SingleKeyHashMap propertyIndex, String propName, boolean isGetter, MetaMethod propertyMethod) {
// is this property already accounted for?
MetaProperty mp = (MetaProperty) propertyIndex.get(propName);
if (mp == null) {
if (isGetter) {
mp = new MetaBeanProperty(propName,
propertyMethod.getReturnType(),
propertyMethod, null);
} else {
//isSetter
mp = new MetaBeanProperty(propName,
propertyMethod.getParameterTypes()[0].getTheClass(),
null, propertyMethod);
}
} else {
MetaBeanProperty mbp;
CachedField mfp;
if (mp instanceof MetaBeanProperty) {
mbp = (MetaBeanProperty) mp;
mfp = mbp.getField();
} else if (mp instanceof CachedField) {
mfp = (CachedField) mp;
mbp = new MetaBeanProperty(propName,
mfp.getType(),
null, null);
} else {
throw new GroovyBugError("unknown MetaProperty class used. Class is " + mp.getClass());
}
// we may have already found one for this name
if (isGetter && mbp.getGetter() == null) {
mbp.setGetter(propertyMethod);
} else if (!isGetter && mbp.getSetter() == null) {
mbp.setSetter(propertyMethod);
}
mbp.setField(mfp);
mp = mbp;
}
propertyIndex.put(propName, mp);
}
protected void applyPropertyDescriptors(PropertyDescriptor[] propertyDescriptors) {
// now iterate over the map of property descriptors and generate
// MetaBeanProperty objects
for (PropertyDescriptor pd : propertyDescriptors) {
// skip if the property type is unknown (this seems to be the case if the
// property descriptor is based on a setX() method that has two parameters,
// which is not a valid property)
if (pd.getPropertyType() == null)
continue;
// get the getter method
Method method = pd.getReadMethod();
MetaMethod getter;
if (method != null) {
CachedMethod cachedGetter = CachedMethod.find(method);
getter = cachedGetter == null ? null : findMethod(cachedGetter);
} else {
getter = null;
}
// get the setter method
MetaMethod setter;
method = pd.getWriteMethod();
if (method != null) {
CachedMethod cachedSetter = CachedMethod.find(method);
setter = cachedSetter == null ? null : findMethod(cachedSetter);
} else {
setter = null;
}
// now create the MetaProperty object
MetaBeanProperty mp = new MetaBeanProperty(pd.getName(), pd.getPropertyType(), getter, setter);
addMetaBeanProperty(mp);
}
}
/**
* Adds a new MetaBeanProperty to this MetaClass
*
* @param mp The MetaBeanProperty
*/
public void addMetaBeanProperty(MetaBeanProperty mp) {
MetaProperty staticProperty = establishStaticMetaProperty(mp);
if (staticProperty != null) {
staticPropertyIndex.put(mp.getName(), mp);
} else {
SingleKeyHashMap propertyMap = classPropertyIndex.getNotNull(theCachedClass);
//keep field
CachedField field;
MetaProperty old = (MetaProperty) propertyMap.get(mp.getName());
if (old != null) {
if (old instanceof MetaBeanProperty) {
field = ((MetaBeanProperty) old).getField();
} else {
field = (CachedField) old;
}
mp.setField(field);
}
// put it in the list
// this will overwrite a possible field property
propertyMap.put(mp.getName(), mp);
}
}
/**
* Sets the property value on an object
*/
public void setProperty(Class sender, Object object, String name, Object newValue, boolean useSuper, boolean fromInsideClass) {
checkInitalised();
//----------------------------------------------------------------------
// handling of static
//----------------------------------------------------------------------
boolean isStatic = theClass != Class.class && object instanceof Class;
if (isStatic && object != theClass) {
MetaClass mc = registry.getMetaClass((Class) object);
mc.getProperty(sender, object, name, useSuper, fromInsideClass);
return;
}
//----------------------------------------------------------------------
// Unwrap wrapped values fo now - the new MOP will handle them properly
//----------------------------------------------------------------------
if (newValue instanceof Wrapper) newValue = ((Wrapper) newValue).unwrap();
MetaMethod method = null;
Object[] arguments = null;
//----------------------------------------------------------------------
// setter
//----------------------------------------------------------------------
MetaProperty mp = getMetaProperty(sender, name, useSuper, isStatic);
MetaProperty field = null;
if (mp != null) {
if (mp instanceof MetaBeanProperty) {
MetaBeanProperty mbp = (MetaBeanProperty) mp;
method = mbp.getSetter();
MetaProperty f = mbp.getField();
if (method != null || (f != null && !Modifier.isFinal(f.getModifiers()))) {
arguments = new Object[]{newValue};
field = f;
}
} else {
field = mp;
}
}
// check for a category method named like a setter
if (!useSuper && !isStatic && GroovyCategorySupport.hasCategoryInCurrentThread()
&& name.length() > 0) {
String getterName = GroovyCategorySupport.getPropertyCategorySetterName(name);
if (getterName != null) {
MetaMethod categoryMethod = getCategoryMethodSetter(sender, getterName, false);
if (categoryMethod != null) {
method = categoryMethod;
arguments = new Object[]{newValue};
}
}
}
//----------------------------------------------------------------------
// listener method
//----------------------------------------------------------------------
boolean ambiguousListener = false;
if (method == null) {
method = (MetaMethod) listeners.get(name);
ambiguousListener = method == AMBIGUOUS_LISTENER_METHOD;
if (method != null &&
!ambiguousListener &&
newValue instanceof Closure) {
// let's create a dynamic proxy
Object proxy = Proxy.newProxyInstance(
theClass.getClassLoader(),
new Class[]{method.getParameterTypes()[0].getTheClass()},
new ConvertedClosure((Closure) newValue, name));
arguments = new Object[]{proxy};
newValue = proxy;
} else {
method = null;
}
}
//----------------------------------------------------------------------
// field
//----------------------------------------------------------------------
if (method == null && field != null) {
if (Modifier.isFinal(field.getModifiers())) {
throw new ReadOnlyPropertyException(name, theClass);
}
if(!(this.isMap && isPrivateOrPkgPrivate(field.getModifiers()))) {
field.setProperty(object, newValue);
return;
}
}
//----------------------------------------------------------------------
// generic set method
//----------------------------------------------------------------------
// check for a generic get method provided through a category
if (method == null && !useSuper && !isStatic && GroovyCategorySupport.hasCategoryInCurrentThread()) {
method = getCategoryMethodSetter(sender, "set", true);
if (method != null) arguments = new Object[]{name, newValue};
}
// the generic method is valid, if available (!=null), if static or
// if it is not static and we do no static access
if (method == null && genericSetMethod != null && !(!genericSetMethod.isStatic() && isStatic)) {
arguments = new Object[]{name, newValue};
method = genericSetMethod;
}
//----------------------------------------------------------------------
// executing the getter method
//----------------------------------------------------------------------
if (method != null) {
if (arguments.length == 1) {
newValue = DefaultTypeTransformation.castToType(
newValue,
method.getParameterTypes()[0].getTheClass());
arguments[0] = newValue;
} else {
newValue = DefaultTypeTransformation.castToType(
newValue,
method.getParameterTypes()[1].getTheClass());
arguments[1] = newValue;
}
method.doMethodInvoke(object, arguments);
return;
}
//----------------------------------------------------------------------
// turn setProperty on a Map to put on the Map itself
//----------------------------------------------------------------------
if (!isStatic && this.isMap) {
((Map) object).put(name, newValue);
return;
}
//----------------------------------------------------------------------
// error due to missing method/field
//----------------------------------------------------------------------
if (ambiguousListener) {
throw new GroovyRuntimeException("There are multiple listeners for the property " + name + ". Please do not use the bean short form to access this listener.");
}
if (mp != null) {
throw new ReadOnlyPropertyException(name, theClass);
}
invokeMissingProperty(object, name, newValue, false);
}
private boolean isPrivateOrPkgPrivate(int mod) {
return !Modifier.isProtected(mod) && !Modifier.isPublic(mod);
}
private MetaProperty getMetaProperty(Class _clazz, String name, boolean useSuper, boolean useStatic) {
if (_clazz == theClass)
return getMetaProperty(name, useStatic);
CachedClass clazz = ReflectionCache.getCachedClass(_clazz);
while (true) {
SingleKeyHashMap propertyMap;
if (useStatic) {
propertyMap = staticPropertyIndex;
} else if (useSuper) {
propertyMap = classPropertyIndexForSuper.getNullable(clazz);
} else {
propertyMap = classPropertyIndex.getNullable(clazz);
}
if (propertyMap == null) {
if (clazz != theCachedClass) {
clazz = theCachedClass;
continue;
} else {
return null;
}
}
return (MetaProperty) propertyMap.get(name);
}
}
private MetaProperty getMetaProperty(String name, boolean useStatic) {
CachedClass clazz = theCachedClass;
SingleKeyHashMap propertyMap;
if (useStatic) {
propertyMap = staticPropertyIndex;
} else {
propertyMap = classPropertyIndex.getNullable(clazz);
}
if (propertyMap == null) {
return null;
}
return (MetaProperty) propertyMap.get(name);
}
public Object getAttribute(Class sender, Object receiver, String messageName, boolean useSuper) {
return getAttribute(receiver, messageName);
}
/**
* Looks up the given attribute (field) on the given object
*/
public Object getAttribute(Class sender, Object object, String attribute, boolean useSuper, boolean fromInsideClass) {
checkInitalised();
boolean isStatic = theClass != Class.class && object instanceof Class;
if (isStatic && object != theClass) {
MetaClass mc = registry.getMetaClass((Class) object);
return mc.getAttribute(sender, object, attribute, useSuper);
}
MetaProperty mp = getMetaProperty(sender, attribute, useSuper, isStatic);
if (mp != null) {
if (mp instanceof MetaBeanProperty) {
MetaBeanProperty mbp = (MetaBeanProperty) mp;
mp = mbp.getField();
}
try {
// delegate the get operation to the metaproperty
if (mp != null) return mp.getProperty(object);
} catch (Exception e) {
throw new GroovyRuntimeException("Cannot read field: " + attribute, e);
}
}
throw new MissingFieldException(attribute, theClass);
}
/**
* Sets the given attribute (field) on the given object
*/
public void setAttribute(Class sender, Object object, String attribute, Object newValue, boolean useSuper, boolean fromInsideClass) {
checkInitalised();
boolean isStatic = theClass != Class.class && object instanceof Class;
if (isStatic && object != theClass) {
MetaClass mc = registry.getMetaClass((Class) object);
mc.setAttribute(sender, object, attribute, newValue, useSuper, fromInsideClass);
return;
}
MetaProperty mp = getMetaProperty(sender, attribute, useSuper, isStatic);
if (mp != null) {
if (mp instanceof MetaBeanProperty) {
MetaBeanProperty mbp = (MetaBeanProperty) mp;
mp = mbp.getField();
}
if (mp != null) {
mp.setProperty(object, newValue);
return;
}
}
throw new MissingFieldException(attribute, theClass);
}
public ClassNode getClassNode() {
if (classNode == null && GroovyObject.class.isAssignableFrom(theClass)) {
// let's try load it from the classpath
String groovyFile = theClass.getName();
int idx = groovyFile.indexOf('$');
if (idx > 0) {
groovyFile = groovyFile.substring(0, idx);
}
groovyFile = groovyFile.replace('.', '/') + ".groovy";
//System.out.println("Attempting to load: " + groovyFile);
URL url = theClass.getClassLoader().getResource(groovyFile);
if (url == null) {
url = Thread.currentThread().getContextClassLoader().getResource(groovyFile);
}
if (url != null) {
try {
/**
* todo there is no CompileUnit in scope so class name
* checking won't work but that mostly affects the bytecode
* generation rather than viewing the AST
*/
CompilationUnit.ClassgenCallback search = new CompilationUnit.ClassgenCallback() {
public void call(ClassVisitor writer, ClassNode node) {
if (node.getName().equals(theClass.getName())) {
MetaClassImpl.this.classNode = node;
}
}
};
final ClassLoader parent = theClass.getClassLoader();
CompilationUnit unit = new CompilationUnit();
unit.setClassgenCallback(search);
unit.addSource(url);
unit.compile(Phases.CLASS_GENERATION);
}
catch (Exception e) {
throw new GroovyRuntimeException("Exception thrown parsing: " + groovyFile + ". Reason: " + e, e);
}
}
}
return classNode;
}
public String toString() {
return super.toString() + "[" + theClass + "]";
}
// Implementation methods
//-------------------------------------------------------------------------
/**
* adds a MetaMethod to this class. WARNING: this method will not
* do the neccessary steps for multimethod logic and using this
* method doesn't mean, that a method added here is replacing another
* method from a parent class completely. These steps are usually done
* by initialize, which means if you need these steps, you have to add
* the method before running initialize the first time.
*
* @param method the MetaMethod
* @see #initialize()
*/
public void addMetaMethod(MetaMethod method) {
if (isInitialized()) {
throw new RuntimeException("Already initialized, cannot add new method: " + method);
}
final CachedClass declaringClass = method.getDeclaringClass();
addMetaMethodToIndex(method, metaMethodIndex.getHeader(declaringClass.getTheClass()));
}
protected void addMetaMethodToIndex(MetaMethod method, MetaMethodIndex.Header header) {
checkIfStdMethod(method);
String name = method.getName();
MetaMethodIndex.Entry e = metaMethodIndex.getOrPutMethods(name, header);
if (method.isStatic()) {
e.staticMethods = metaMethodIndex.addMethodToList(e.staticMethods, method);
}
e.methods = metaMethodIndex.addMethodToList(e.methods, method);
}
/**
* Checks if the metaMethod is a method from the GroovyObject interface such as setProperty, getProperty and invokeMethod
*
* @param metaMethod The metaMethod instance
* @see GroovyObject
*/
protected final void checkIfGroovyObjectMethod(MetaMethod metaMethod) {
if (metaMethod instanceof ClosureMetaMethod || metaMethod instanceof MixinInstanceMetaMethod) {
if(isGetPropertyMethod(metaMethod)) {
getPropertyMethod = metaMethod;
}
else if(isInvokeMethod(metaMethod)) {
invokeMethodMethod = metaMethod;
}
else if(isSetPropertyMethod(metaMethod)) {
setPropertyMethod = metaMethod;
}
}
}
private boolean isSetPropertyMethod(MetaMethod metaMethod) {
return SET_PROPERTY_METHOD.equals(metaMethod.getName()) && metaMethod.getParameterTypes().length == 2;
}
private boolean isGetPropertyMethod(MetaMethod metaMethod) {
return GET_PROPERTY_METHOD.equals(metaMethod.getName());
}
private boolean isInvokeMethod(MetaMethod metaMethod) {
return INVOKE_METHOD_METHOD.equals(metaMethod.getName()) && metaMethod.getParameterTypes().length == 2;
}
private void checkIfStdMethod(MetaMethod method) {
checkIfGroovyObjectMethod(method);
if (isGenericGetMethod(method) && genericGetMethod == null) {
genericGetMethod = method;
} else if (MetaClassHelper.isGenericSetMethod(method) && genericSetMethod == null) {
genericSetMethod = method;
}
if (method.getName().equals(PROPERTY_MISSING)) {
CachedClass[] parameterTypes = method.getParameterTypes();
if (parameterTypes.length == 1) {
propertyMissingGet = method;
}
}
if (propertyMissingSet == null && method.getName().equals(PROPERTY_MISSING)) {
CachedClass[] parameterTypes = method.getParameterTypes();
if (parameterTypes.length == 2) {
propertyMissingSet = method;
}
}
if (method.getName().equals(METHOD_MISSING)) {
CachedClass[] parameterTypes = method.getParameterTypes();
if (parameterTypes.length == 2
&& parameterTypes[0].getTheClass() == String.class
&& parameterTypes[1].getTheClass() == Object.class) {
methodMissing = method;
}
}
if (theCachedClass.isNumber) {
NumberMathModificationInfo.instance.checkIfStdMethod (method);
}
}
protected boolean isInitialized() {
return initialized;
}
/**
* return false: add method
* null: ignore method
* true: replace
*/
private Boolean getMatchKindForCategory(MetaMethod aMethod, MetaMethod categoryMethod) {
CachedClass[] params1 = aMethod.getParameterTypes();
CachedClass[] params2 = categoryMethod.getParameterTypes();
if (params1.length != params2.length) return Boolean.FALSE;
for (int i = 0; i < params1.length; i++) {
if (params1[i] != params2[i]) return Boolean.FALSE;
}
Class aMethodClass = aMethod.getDeclaringClass().getTheClass();
Class categoryMethodClass = categoryMethod.getDeclaringClass().getTheClass();
if (aMethodClass==categoryMethodClass) return Boolean.TRUE;
boolean match = aMethodClass.isAssignableFrom(categoryMethodClass);
if (match) return Boolean.TRUE;
return null;
}
private void filterMatchingMethodForCategory(FastArray list, MetaMethod method) {
int len = list.size();
if (len==0) {
list.add(method);
return;
}
Object data[] = list.getArray();
for (int j = 0; j != len; ++j) {
MetaMethod aMethod = (MetaMethod) data[j];
Boolean match = getMatchKindForCategory(aMethod, method);
// true == replace
if (match==Boolean.TRUE) {
list.set(j, method);
return;
// null == ignore (we have a better method already)
} else if (match==null) {
return;
}
}
// the casese true and null for a match are through, the
// remaining case is false and that means adding the method
// to our list
list.add(method);
}
private int findMatchingMethod(CachedMethod[] data, int from, int to, MetaMethod method) {
for (int j = from; j <= to; ++j) {
CachedMethod aMethod = data[j];
CachedClass[] params1 = aMethod.getParameterTypes();
CachedClass[] params2 = method.getParameterTypes();
if (params1.length == params2.length) {
boolean matches = true;
for (int i = 0; i < params1.length; i++) {
if (params1[i] != params2[i]) {
matches = false;
break;
}
}
if (matches) {
return j;
}
}
}
return -1;
}
/**
* @return the matching method which should be found
*/
private MetaMethod findMethod(CachedMethod aMethod) {
Object methods = getMethods(theClass, aMethod.getName(), false);
if (methods instanceof FastArray) {
FastArray m = (FastArray) methods;
final int len = m.size;
final Object data[] = m.getArray();
for (int i = 0; i != len; ++i) {
MetaMethod method = (MetaMethod) data[i];
if (method.isMethod(aMethod)) {
return method;
}
}
}
else {
MetaMethod method = (MetaMethod) methods;
if (method.getName().equals(aMethod.getName())
// TODO: should be better check for case when only diff in modifiers can be SYNTHETIC flag
// && method.getModifiers() == aMethod.getModifiers()
&& method.getReturnType().equals(aMethod.getReturnType())
&& MetaMethod.equal(method.getParameterTypes(), aMethod.getParameterTypes())) {
return method;
}
}
//log.warning("Creating reflection based dispatcher for: " + aMethod);
synchronized (aMethod.cachedClass) {
return aMethod;
}
}
/**
* Chooses the correct method to use from a list of methods which match by
* name.
*
* @param methodOrList the possible methods to choose from
* @param arguments
*/
protected Object chooseMethod(String methodName, Object methodOrList, Class[] arguments) {
Object method = chooseMethodInternal(methodName, methodOrList, arguments);
if (method instanceof GeneratedMetaMethod.Proxy)
return ((GeneratedMetaMethod.Proxy)method).proxy ();
return method;
}
private Object chooseMethodInternal(String methodName, Object methodOrList, Class[] arguments) {
if (methodOrList instanceof MetaMethod) {
if (((ParameterTypes) methodOrList).isValidMethod(arguments)) {
return methodOrList;
}
return null;
}
FastArray methods = (FastArray) methodOrList;
if (methods==null) return null;
int methodCount = methods.size();
if (methodCount <= 0) {
return null;
} else if (methodCount == 1) {
Object method = methods.get(0);
if (((ParameterTypes) method).isValidMethod(arguments)) {
return method;
}
return null;
}
Object answer;
if (arguments == null || arguments.length == 0) {
answer = MetaClassHelper.chooseEmptyMethodParams(methods);
} else if (arguments.length == 1 && arguments[0] == null) {
answer = MetaClassHelper.chooseMostGeneralMethodWith1NullParam(methods);
} else {
Object matchingMethods = null;
final int len = methods.size;
Object data[] = methods.getArray();
for (int i = 0; i != len; ++i) {
Object method = data[i];
// making this false helps find matches
if (((ParameterTypes) method).isValidMethod(arguments)) {
if (matchingMethods == null)
matchingMethods = method;
else
if (matchingMethods instanceof ArrayList)
((ArrayList)matchingMethods).add(method);
else {
ArrayList arr = new ArrayList(4);
arr.add(matchingMethods);
arr.add(method);
matchingMethods = arr;
}
}
}
if (matchingMethods == null) {
return null;
} else if (!(matchingMethods instanceof ArrayList)) {
return matchingMethods;
}
return chooseMostSpecificParams(methodName, (List) matchingMethods, arguments);
}
if (answer != null) {
return answer;
}
throw new MethodSelectionException(methodName, methods, arguments);
}
private Object chooseMostSpecificParams(String name, List matchingMethods, Class[] arguments) {
long matchesDistance = -1;
LinkedList matches = new LinkedList();
for (Iterator iter = matchingMethods.iterator(); iter.hasNext();) {
Object method = iter.next();
ParameterTypes paramTypes = (ParameterTypes) method;
long dist = MetaClassHelper.calculateParameterDistance(arguments, paramTypes);
if (dist == 0) return method;
if (matches.size() == 0) {
matches.add(method);
matchesDistance = dist;
} else if (dist < matchesDistance) {
matchesDistance = dist;
matches.clear();
matches.add(method);
} else if (dist == matchesDistance) {
matches.add(method);
}
}
if (matches.size() == 1) {
return matches.getFirst();
}
if (matches.size() == 0) {
return null;
}
//more than one matching method found --> ambiguous!
String msg = "Ambiguous method overloading for method ";
msg += theClass.getName() + "#" + name;
msg += ".\nCannot resolve which method to invoke for ";
msg += InvokerHelper.toString(arguments);
msg += " due to overlapping prototypes between:";
for (Iterator iter = matches.iterator(); iter.hasNext();) {
Class[] types = ((ParameterTypes) iter.next()).getNativeParameterTypes();
msg += "\n\t" + InvokerHelper.toString(types);
}
throw new GroovyRuntimeException(msg);
}
private boolean isGenericGetMethod(MetaMethod method) {
if (method.getName().equals("get")) {
CachedClass[] parameterTypes = method.getParameterTypes();
return parameterTypes.length == 1 && parameterTypes[0].getTheClass() == String.class;
}
return false;
}
public synchronized void initialize() {
if (!isInitialized()) {
fillMethodIndex();
addProperties();
initialized = true;
}
}
private void addProperties() {
BeanInfo info;
final Class stopClass;
// introspect
try {
if (isBeanDerivative(theClass)) {
info = (BeanInfo) AccessController.doPrivileged(new PrivilegedExceptionAction() {
public Object run() throws IntrospectionException {
return Introspector.getBeanInfo(theClass, Introspector.IGNORE_ALL_BEANINFO);
}
});
} else {
info = (BeanInfo) AccessController.doPrivileged(new PrivilegedExceptionAction() {
public Object run() throws IntrospectionException {
return Introspector.getBeanInfo(theClass);
}
});
}
} catch (PrivilegedActionException pae) {
throw new GroovyRuntimeException("exception during bean introspection", pae.getException());
}
PropertyDescriptor[] descriptors = info.getPropertyDescriptors();
// build up the metaproperties based on the public fields, property descriptors,
// and the getters and setters
setupProperties(descriptors);
EventSetDescriptor[] eventDescriptors = info.getEventSetDescriptors();
for (EventSetDescriptor descriptor : eventDescriptors) {
Method[] listenerMethods = descriptor.getListenerMethods();
for (Method listenerMethod : listenerMethods) {
final MetaMethod metaMethod = CachedMethod.find(descriptor.getAddListenerMethod());
// GROOVY-5202
// there might be a non public listener of some kind
// we skip that here
if (metaMethod==null) continue;
addToAllMethodsIfPublic(metaMethod);
String name = listenerMethod.getName();
if (listeners.containsKey(name)) {
listeners.put(name, AMBIGUOUS_LISTENER_METHOD);
} else {
listeners.put(name, metaMethod);
}
}
}
}
private boolean isBeanDerivative(Class theClass) {
Class next = theClass;
while (next != null) {
if (Arrays.asList(next.getInterfaces()).contains(BeanInfo.class)) return true;
next = next.getSuperclass();
}
return false;
}
private void addToAllMethodsIfPublic(MetaMethod metaMethod) {
if (Modifier.isPublic(metaMethod.getModifiers()))
allMethods.add(metaMethod);
}
public List getMethods() {
return allMethods;
}
public List getMetaMethods() {
return new ArrayList(newGroovyMethodsSet);
}
protected void dropStaticMethodCache(String name) {
metaMethodIndex.clearCaches(name);
}
protected void dropMethodCache(String name) {
metaMethodIndex.clearCaches(name);
}
public CallSite createPojoCallSite(CallSite site, Object receiver, Object[] args) {
if (!(this instanceof AdaptingMetaClass)) {
Class [] params = MetaClassHelper.convertToTypeArray(args);
MetaMethod metaMethod = getMethodWithCachingInternal(getTheClass(), site, params);
if (metaMethod != null)
return PojoMetaMethodSite.createPojoMetaMethodSite(site, this, metaMethod, params, receiver, args);
}
return new PojoMetaClassSite(site, this);
}
public CallSite createStaticSite(CallSite site, Object[] args) {
if (!(this instanceof AdaptingMetaClass)) {
Class [] params = MetaClassHelper.convertToTypeArray(args);
MetaMethod metaMethod = retrieveStaticMethod(site.getName(), args);
if (metaMethod != null)
return StaticMetaMethodSite.createStaticMetaMethodSite(site, this, metaMethod, params, args);
}
return new StaticMetaClassSite(site, this);
}
public CallSite createPogoCallSite(CallSite site, Object[] args) {
if (!GroovyCategorySupport.hasCategoryInCurrentThread() && !(this instanceof AdaptingMetaClass)) {
Class [] params = MetaClassHelper.convertToTypeArray(args);
CallSite tempSite = site;
if (site.getName().equals("call") && GeneratedClosure.class.isAssignableFrom(theClass)) {
// here, we want to point to a method named "doCall" instead of "call"
// but we don't want to replace the original call site name, otherwise
// we loose the fact that the original method name was "call" so instead
// we will point to a metamethod called "doCall"
// see GROOVY-5806 for details
tempSite = new AbstractCallSite(site.getArray(),site.getIndex(),"doCall");
}
MetaMethod metaMethod = getMethodWithCachingInternal(theClass, tempSite, params);
if (metaMethod != null)
return PogoMetaMethodSite.createPogoMetaMethodSite(site, this, metaMethod, params, args);
}
return new PogoMetaClassSite(site, this);
}
public CallSite createPogoCallCurrentSite(CallSite site, Class sender, Object[] args) {
if (!GroovyCategorySupport.hasCategoryInCurrentThread() && !(this instanceof AdaptingMetaClass)) {
Class [] params = MetaClassHelper.convertToTypeArray(args);
MetaMethod metaMethod = getMethodWithCachingInternal(sender, site, params);
if (metaMethod != null)
return PogoMetaMethodSite.createPogoMetaMethodSite(site, this, metaMethod, params, args);
}
return new PogoMetaClassSite(site, this);
}
public CallSite createConstructorSite(CallSite site, Object[] args) {
if (!(this instanceof AdaptingMetaClass)) {
Class[] params = MetaClassHelper.convertToTypeArray(args);
CachedConstructor constructor = (CachedConstructor) chooseMethod("", constructors, params);
if (constructor != null) {
return ConstructorSite.createConstructorSite(site, this,constructor,params, args);
}
else {
if (args.length == 1 && args[0] instanceof Map) {
constructor = (CachedConstructor) chooseMethod("", constructors, MetaClassHelper.EMPTY_TYPE_ARRAY);
if (constructor != null) {
return new ConstructorSite.NoParamSite(site, this,constructor,params);
}
} else if (args.length == 2 && theClass.getEnclosingClass() != null && args[1] instanceof Map) {
Class enclosingClass = theClass.getEnclosingClass();
String enclosingInstanceParamType = args[0] != null ? args[0].getClass().getName() : "";
if(enclosingClass.getName().equals(enclosingInstanceParamType)) {
constructor = (CachedConstructor) chooseMethod("", constructors, new Class[]{enclosingClass});
if (constructor != null) {
return new ConstructorSite.NoParamSiteInnerClass(site, this,constructor,params);
}
}
}
}
}
return new MetaClassConstructorSite(site, this);
}
public ClassInfo getClassInfo() {
return theCachedClass.classInfo;
}
public int getVersion() {
return theCachedClass.classInfo.getVersion();
}
public void incVersion() {
theCachedClass.classInfo.incVersion();
}
public MetaMethod[] getAdditionalMetaMethods() {
return additionalMetaMethods;
}
protected MetaBeanProperty findPropertyInClassHierarchy(String propertyName, CachedClass theClass) {
MetaBeanProperty property= null;
if (theClass == null)
return null;
final CachedClass superClass = theClass.getCachedSuperClass();
if (superClass == null)
return null;
MetaClass metaClass = this.registry.getMetaClass(superClass.getTheClass());
if(metaClass instanceof MutableMetaClass) {
property = getMetaPropertyFromMutableMetaClass(propertyName,metaClass);
if(property == null) {
if(superClass != ReflectionCache.OBJECT_CLASS) {
property = findPropertyInClassHierarchy(propertyName, superClass);
}
if(property == null) {
final Class[] interfaces = theClass.getTheClass().getInterfaces();
property = searchInterfacesForMetaProperty(propertyName, interfaces);
}
}
}
return property;
}
private MetaBeanProperty searchInterfacesForMetaProperty(String propertyName, Class[] interfaces) {
MetaBeanProperty property = null;
for (Class anInterface : interfaces) {
MetaClass metaClass = registry.getMetaClass(anInterface);
if (metaClass instanceof MutableMetaClass) {
property = getMetaPropertyFromMutableMetaClass(propertyName, metaClass);
if (property != null) break;
}
Class[] superInterfaces = anInterface.getInterfaces();
if (superInterfaces.length > 0) {
property = searchInterfacesForMetaProperty(propertyName, superInterfaces);
if (property != null) break;
}
}
return property;
}
private MetaBeanProperty getMetaPropertyFromMutableMetaClass(String propertyName, MetaClass metaClass) {
final boolean isModified = ((MutableMetaClass) metaClass).isModified();
if (isModified) {
final MetaProperty metaProperty = metaClass.getMetaProperty(propertyName);
if(metaProperty instanceof MetaBeanProperty)
return (MetaBeanProperty)metaProperty;
}
return null;
}
protected MetaMethod findMixinMethod(String methodName, Class[] arguments) {
return null;
}
protected static MetaMethod findMethodInClassHierarchy(Class instanceKlazz, String methodName, Class[] arguments, MetaClass metaClass) {
if (metaClass instanceof MetaClassImpl) {
boolean check = false;
for (ClassInfo ci : ((MetaClassImpl)metaClass).theCachedClass.getHierarchy ()) {
final MetaClass aClass = ci.getStrongMetaClass();
if (aClass instanceof MutableMetaClass && ((MutableMetaClass)aClass).isModified()) {
check = true;
break;
}
}
if (!check)
return null;
}
MetaMethod method = null;
Class superClass;
if (metaClass.getTheClass().isArray() && !metaClass.getTheClass().getComponentType().isPrimitive() && metaClass.getTheClass().getComponentType() != Object.class) {
superClass = Object[].class;
}
else {
superClass = metaClass.getTheClass().getSuperclass();
}
if (superClass != null) {
MetaClass superMetaClass = GroovySystem.getMetaClassRegistry().getMetaClass(superClass);
method = findMethodInClassHierarchy(instanceKlazz, methodName, arguments, superMetaClass);
}
else {
if (metaClass.getTheClass().isInterface()) {
MetaClass superMetaClass = GroovySystem.getMetaClassRegistry().getMetaClass(Object.class);
method = findMethodInClassHierarchy(instanceKlazz, methodName, arguments, superMetaClass);
}
}
method = findSubClassMethod(instanceKlazz, methodName, arguments, metaClass, method);
MetaMethod infMethod = searchInterfacesForMetaMethod(instanceKlazz, methodName, arguments, metaClass);
if (infMethod != null) {
if (method == null)
method = infMethod;
else
method = mostSpecific(method, infMethod, instanceKlazz);
}
method = findOwnMethod(instanceKlazz, methodName, arguments, metaClass, method);
return method;
}
private static MetaMethod findSubClassMethod(Class instanceKlazz, String methodName, Class[] arguments, MetaClass metaClass, MetaMethod method) {
if (metaClass instanceof MetaClassImpl) {
Object list = ((MetaClassImpl) metaClass).getSubclassMetaMethods(methodName);
if (list != null) {
if (list instanceof MetaMethod) {
MetaMethod m = (MetaMethod) list;
if (m.getDeclaringClass().getTheClass().isAssignableFrom(instanceKlazz)) {
if (m.isValidExactMethod(arguments)) {
if (method == null)
method = m;
else {
method = mostSpecific (method, m, instanceKlazz);
}
}
}
}
else {
FastArray arr = (FastArray) list;
for (int i = 0; i != arr.size(); ++i) {
MetaMethod m = (MetaMethod) arr.get(i);
if (m.getDeclaringClass().getTheClass().isAssignableFrom(instanceKlazz)) {
if (m.isValidExactMethod(arguments)) {
if (method == null)
method = m;
else {
method = mostSpecific (method, m, instanceKlazz);
}
}
}
}
}
}
}
return method;
}
private static MetaMethod mostSpecific(MetaMethod method, MetaMethod newMethod, Class instanceKlazz) {
Class newMethodC = newMethod.getDeclaringClass().getTheClass();
Class methodC = method.getDeclaringClass().getTheClass();
if (!newMethodC.isAssignableFrom(instanceKlazz))
return method;
if (newMethodC == methodC)
return newMethod;
if (newMethodC.isAssignableFrom(methodC)) {
return method;
}
if (methodC.isAssignableFrom(newMethodC)) {
return newMethod;
}
return newMethod;
}
private static MetaMethod searchInterfacesForMetaMethod(Class instanceKlazz, String methodName, Class[] arguments, MetaClass metaClass) {
Class[] interfaces = metaClass.getTheClass().getInterfaces();
MetaMethod method = null;
for (Class anInterface : interfaces) {
MetaClass infMetaClass = GroovySystem.getMetaClassRegistry().getMetaClass(anInterface);
MetaMethod infMethod = searchInterfacesForMetaMethod(instanceKlazz, methodName, arguments, infMetaClass);
if (infMethod != null) {
if (method == null)
method = infMethod;
else
method = mostSpecific(method, infMethod, instanceKlazz);
}
}
method = findSubClassMethod(instanceKlazz, methodName, arguments, metaClass, method);
method = findOwnMethod(instanceKlazz, methodName, arguments, metaClass, method);
return method;
}
protected static MetaMethod findOwnMethod(Class instanceKlazz, String methodName, Class[] arguments, MetaClass metaClass, MetaMethod method) {
// we trick ourselves here
if (instanceKlazz == metaClass.getTheClass())
return method;
MetaMethod ownMethod = metaClass.pickMethod(methodName, arguments);
if (ownMethod != null) {
if (method == null)
method = ownMethod;
else
method = mostSpecific(method, ownMethod, instanceKlazz);
}
return method;
}
protected Object getSubclassMetaMethods(String methodName) {
return null;
}
private abstract class MethodIndexAction {
public void iterate() {
final ComplexKeyHashMap.Entry[] table = metaMethodIndex.methodHeaders.getTable();
int len = table.length;
for (int i = 0; i != len; ++i) {
for (SingleKeyHashMap.Entry classEntry = (SingleKeyHashMap.Entry) table[i];
classEntry != null;
classEntry = (SingleKeyHashMap.Entry) classEntry.next) {
Class clazz = (Class) classEntry.getKey();
if (skipClass(clazz)) continue;
MetaMethodIndex.Header header = (MetaMethodIndex.Header) classEntry.getValue();
for (MetaMethodIndex.Entry nameEntry = header.head; nameEntry != null; nameEntry = nameEntry.nextClassEntry) {
methodNameAction(clazz, nameEntry);
}
}
}
}
public abstract void methodNameAction(Class clazz, MetaMethodIndex.Entry methods);
public boolean skipClass(Class clazz) {
return false;
}
}
public Object getProperty(Object object, String property) {
return getProperty(theClass, object, property, false, false);
}
public void setProperty(Object object, String property, Object newValue) {
setProperty(theClass, object, property, newValue, false, false);
}
public Object getAttribute(Object object, String attribute) {
return getAttribute(theClass, object, attribute, false, false);
}
public void setAttribute(Object object, String attribute, Object newValue) {
setAttribute(theClass, object, attribute, newValue, false, false);
}
public MetaMethod pickMethod(String methodName, Class[] arguments) {
return getMethodWithoutCaching(theClass, methodName, arguments, false);
}
/**
* remove all method call cache entries. This should be done if a
* method is added during runtime, but not by using a category.
*/
protected void clearInvocationCaches() {
metaMethodIndex.clearCaches ();
}
private static final SingleKeyHashMap.Copier NAME_INDEX_COPIER = new SingleKeyHashMap.Copier() {
public Object copy(Object value) {
if (value instanceof FastArray)
return ((FastArray) value).copy();
else
return value;
}
};
private static final SingleKeyHashMap.Copier METHOD_INDEX_COPIER = new SingleKeyHashMap.Copier() {
public Object copy(Object value) {
return SingleKeyHashMap.copy(new SingleKeyHashMap(false), (SingleKeyHashMap) value, NAME_INDEX_COPIER);
}
};
class MethodIndex extends Index {
public MethodIndex(boolean b) {
super(false);
}
public MethodIndex(int size) {
super(size);
}
public MethodIndex() {
super();
}
MethodIndex copy() {
return (MethodIndex) SingleKeyHashMap.copy(new MethodIndex(false), this, METHOD_INDEX_COPIER);
}
protected Object clone() throws CloneNotSupportedException {
return super.clone();
}
}
public static class Index extends SingleKeyHashMap {
public Index(int size) {
}
public Index() {
}
public Index(boolean size) {
super(false);
}
public SingleKeyHashMap getNotNull(CachedClass key) {
Entry res = getOrPut(key);
if (res.value == null) {
res.value = new SingleKeyHashMap();
}
return (SingleKeyHashMap) res.value;
}
public void put(CachedClass key, SingleKeyHashMap value) {
((Entry) getOrPut(key)).value = value;
}
public SingleKeyHashMap getNullable(CachedClass clazz) {
return (SingleKeyHashMap) get(clazz);
}
public boolean checkEquals(ComplexKeyHashMap.Entry e, Object key) {
return ((Entry) e).key.equals(key);
}
}
private static class DummyMetaMethod extends MetaMethod {
public int getModifiers() {
return 0;
}
public String getName() {
return null;
}
public Class getReturnType() {
return null;
}
public CachedClass getDeclaringClass() {
return null;
}
public ParameterTypes getParamTypes() {
return null;
}
public Object invoke(Object object, Object[] arguments) {
return null;
}
}
}
