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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.groovy.internal.util.UncheckedThrow;
import org.apache.groovy.util.BeanUtils;
import org.apache.groovy.util.SystemUtil;
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.CacheAccessControlException;
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.reflection.android.AndroidSupport;
import org.codehaus.groovy.runtime.ArrayTypeUtils;
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.GroovyCategorySupport.CategoryMethod;
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.MetaClassRegistryImpl;
import org.codehaus.groovy.runtime.metaclass.MetaMethodIndex;
import org.codehaus.groovy.runtime.metaclass.MethodMetaProperty.GetBeanMethodMetaProperty;
import org.codehaus.groovy.runtime.metaclass.MethodMetaProperty.GetMethodMetaProperty;
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.MultipleSetterProperty;
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.codehaus.groovy.vmplugin.VMPlugin;
import org.codehaus.groovy.vmplugin.VMPluginFactory;
import javax.annotation.Nullable;
import java.beans.BeanInfo;
import java.beans.EventSetDescriptor;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Array;
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.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.ListIterator;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import static java.lang.Character.isUpperCase;
import static org.apache.groovy.util.Arrays.concat;
import static org.codehaus.groovy.ast.tools.GeneralUtils.inSamePackage;
import static org.codehaus.groovy.reflection.ReflectionCache.isAssignableFrom;
/**
* Allows methods to be dynamically added to existing classes at runtime
*
* @see groovy.lang.MetaClass
*/
public class MetaClassImpl implements MetaClass, MutableMetaClass {
public static final Object[] EMPTY_ARGUMENTS = {};
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";
protected static final String INVOKE_METHOD_METHOD = "invokeMethod";
private static final String CLOSURE_CALL_METHOD = "call";
private static final String CLOSURE_DO_CALL_METHOD = "doCall";
private static final String GET_PROPERTY_METHOD = "getProperty";
private static final String SET_PROPERTY_METHOD = "setProperty";
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 MetaMethod AMBIGUOUS_LISTENER_METHOD = new DummyMetaMethod();
private static final Comparator CACHED_CLASS_NAME_COMPARATOR = Comparator.comparing(CachedClass::getName);
private static final boolean PERMISSIVE_PROPERTY_ACCESS = SystemUtil.getBooleanSafe("groovy.permissive.property.access");
private static final VMPlugin VM_PLUGIN = VMPluginFactory.getPlugin();
protected final Class theClass;
protected final CachedClass theCachedClass;
protected final boolean isGroovyObject;
protected final boolean isMap;
protected final MetaMethodIndex metaMethodIndex;
private final Map> classPropertyIndex = new LinkedHashMap<>();
private final Map staticPropertyIndex = new LinkedHashMap<>();
private final Map listeners = new LinkedHashMap<>();
private final List allMethods = new ArrayList<>();
// we only need one of these that can be reused over and over.
private final MetaProperty arrayLengthProperty = new MetaArrayLengthProperty();
private final Map> classPropertyIndexForSuper = new LinkedHashMap<>();
private final Set newGroovyMethodsSet = new LinkedHashSet<>();
private final MetaMethod[] myNewMetaMethods;
private final MetaMethod[] additionalMetaMethods;
protected MetaMethod getPropertyMethod;
protected MetaMethod invokeMethodMethod;
protected MetaMethod setPropertyMethod;
protected MetaClassRegistry registry;
private ClassNode classNode;
private FastArray constructors;
private volatile boolean initialized;
private MetaMethod genericGetMethod;
private MetaMethod genericSetMethod;
private MetaMethod propertyMissingGet;
private MetaMethod propertyMissingSet;
private MetaMethod methodMissing;
private MetaMethodIndex.Header mainClassMethodHeader;
private boolean permissivePropertyAccess = PERMISSIVE_PROPERTY_ACCESS;
/**
* Constructor
*
* @param theClass The class this is the metaclass dor
* @param add The methods for this class
*/
public MetaClassImpl(final Class theClass, final 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) {
myNewMetaMethods = concat(metaMethods, add);
additionalMetaMethods = metaMethods;
} else {
myNewMetaMethods = metaMethods;
additionalMetaMethods = MetaMethod.EMPTY_ARRAY;
}
}
/**
* Constructor that sets the methods to null
*
* @param theClass The class this is the metaclass dor
*/
public MetaClassImpl(final Class theClass) {
this(theClass, null);
}
/**
* Constructor with registry
*
* @param registry The metaclass registry for this MetaClass
* @param theClass The class
* @param add The methods
*/
public MetaClassImpl(final MetaClassRegistry registry, final Class theClass, final MetaMethod[] add) {
this(theClass, add);
this.registry = registry;
this.constructors = new FastArray(theCachedClass.getConstructors());
}
/**
* Constructor with registry setting methods to null
*
* @param registry The metaclass registry for this MetaClass
* @param theClass The class
*/
public MetaClassImpl(MetaClassRegistry registry, final Class theClass) {
this(registry, theClass, null);
}
/**
* Returns the cached class for this metaclass
*
* @return The cached class.
*/
public final CachedClass getTheCachedClass() {
return theCachedClass;
}
/**
* Returns the registry for this metaclass
*
* @return The resgistry
*/
public MetaClassRegistry getRegistry() {
return registry;
}
/**
* @see MetaObjectProtocol#respondsTo(Object, String, Object[])
*/
@Override
public List respondsTo(final Object obj, final String name, final Object[] argTypes) {
Class[] classes = MetaClassHelper.castArgumentsToClassArray(argTypes);
MetaMethod m = getMetaMethod(name, classes);
if (m != null) {
return Collections.singletonList(m);
}
return Collections.emptyList();
}
/**
* @see MetaObjectProtocol#respondsTo(Object, String)
*/
@Override
public List respondsTo(final Object obj, final String name) {
final Object o = getMethods(getTheClass(), name, false);
if (o instanceof FastArray) {
return ((FastArray) o).toList();
}
return Collections.singletonList(o);
}
/**
* @see MetaObjectProtocol#hasProperty(Object, String)
*/
@Override
public MetaProperty hasProperty(final Object obj, final String name) {
return getMetaProperty(name);
}
/**
* @see MetaObjectProtocol#getMetaProperty(String)
*/
@Override
public MetaProperty getMetaProperty(final String name) {
MetaProperty metaProperty = null;
LinkedHashMap propertyMap = classPropertyIndex.computeIfAbsent(theCachedClass, k -> new LinkedHashMap<>());
metaProperty = propertyMap.get(name);
if (metaProperty == null) {
metaProperty = staticPropertyIndex.get(name);
if (metaProperty == null) {
propertyMap = classPropertyIndexForSuper.computeIfAbsent(theCachedClass, k -> new LinkedHashMap<>());
metaProperty = propertyMap.get(name);
if (metaProperty == null) {
MetaBeanProperty property = findPropertyInClassHierarchy(name, theCachedClass);
if (property != null) {
onSuperPropertyFoundInHierarchy(property);
metaProperty = property;
}
}
}
}
return metaProperty;
}
/**
* @see MetaObjectProtocol#getStaticMetaMethod(String, Object[])
*/
@Override
public MetaMethod getStaticMetaMethod(final String name, final Object[] argTypes) {
Class[] classes = MetaClassHelper.castArgumentsToClassArray(argTypes);
return pickStaticMethod(name, classes);
}
/**
* @see MetaObjectProtocol#getMetaMethod(String, Object[])
*/
@Override
public MetaMethod getMetaMethod(final String name, final Object[] argTypes) {
Class[] classes = MetaClassHelper.castArgumentsToClassArray(argTypes);
return pickMethod(name, classes);
}
/**
* Returns the class this object this is the metaclass of.
*
* @return The class contained by this metaclass
*/
public Class getTheClass() {
return this.theClass;
}
/**
* Return whether the class represented by this metaclass instance is an instance of the GroovyObject class
*
* @return true if this is a groovy class, false otherwise.
*/
public boolean isGroovyObject() {
return isGroovyObject;
}
/**
* Fills the method index
*/
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(final List superClasses, final CachedClass firstGroovySuper) {
MetaMethodIndex.Header header = metaMethodIndex.getHeader(firstGroovySuper.getTheClass());
CachedClass c;
Iterator iter = superClasses.iterator();
while (iter.hasNext()) {
c = 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;
while (iter.hasNext()) {
c = 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(final CachedClass c) {
if (theCachedClass != c)
return c.getNewMetaMethods();
return myNewMetaMethods;
}
private void addInterfaceMethods(final Set interfaces) {
MetaMethodIndex.Header header = metaMethodIndex.getHeader(theClass);
for (CachedClass c : interfaces) {
for (CachedMethod m : c.getMethods()) {
addMetaMethodToIndex(m, 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() {
@Override
public boolean skipClass(final Class clazz) {
return clazz == theClass;
}
@Override
public void methodNameAction(final Class clazz, final 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;
@Override
public void methodNameAction(final Class clazz, final 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 matchingMethod = findMatchingMethod(method, mopName, index, mopMethods);
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.parseInt(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 matchingMethod = findMatchingMethod(method, fixedMopName, index, mopMethods);
if (matchingMethod != -1) {
e.methodsForSuper = mopMethods[matchingMethod];
distance = 0;
}
}
distance -= 1;
}
}
}
}
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(final FastArray methods) {
final int len = methods.size();
final Object[] data = methods.getArray();
for (int i = 0; i != len; i += 1) {
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 matchingMethod = findMatchingMethod(method, mopName, index, mopMethods);
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 int findMatchingMethod(final MetaMethod method, final String mopName, final int index, final CachedMethod[] mopMethods) {
int from = index;
while (from > 0 && mopMethods[from - 1].getName().equals(mopName))
from -= 1;
int to = index;
while (to < mopMethods.length - 1 && mopMethods[to + 1].getName().equals(mopName))
to += 1;
return findMatchingMethod(mopMethods, from, to, method);
}
private void inheritInterfaceNewMetaMethods(final Set interfaces) {
// add methods declared by DGM for interfaces
for (CachedClass face : interfaces) {
for (MetaMethod method : getNewMetaMethods(face)) {
boolean skip = false;
// skip DGM methods on an interface if the class already has the method
// but don't skip for GroovyObject-related methods as it breaks things :-(
if (method instanceof GeneratedMetaMethod && !isAssignableFrom(GroovyObject.class, method.getDeclaringClass().getTheClass())) {
for (Method m : theClass.getMethods()) {
if (method.getName().equals(m.getName())
// below not true for DGM#push and also co-variant return scenarios
//&& method.getReturnType().equals(m.getReturnType())
&& MetaMethod.equal(method.getParameterTypes(), m.getParameterTypes())) {
skip = true;
break;
}
}
}
if (!skip) {
newGroovyMethodsSet.add(method);
addMetaMethodToIndex(method, mainClassMethodHeader);
}
}
}
}
private void connectMultimethods(final List superClasses, final CachedClass firstGroovyClass) {
MetaMethodIndex.Header last = null;
for (ListIterator iter = superClasses.listIterator(superClasses.size()); iter.hasPrevious(); ) {
CachedClass c = iter.previous();
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(final List superClasses) {
if (theCachedClass.isInterface)
return ReflectionCache.OBJECT_CLASS;
CachedClass firstGroovy = null;
Iterator iter = superClasses.iterator();
while (iter.hasNext()) {
CachedClass c = 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 = iter.next();
if (firstGroovy.getTheClass() == Closure.class && iter.hasNext()) {
firstGroovy = iter.next();
}
}
return GroovyObject.class.isAssignableFrom(firstGroovy.getTheClass()) ? firstGroovy.getCachedSuperClass() : firstGroovy;
}
/**
* Gets all instance methods available on this class for the given name
*
* @return all the normal instance methods available on this class for the
* given name
*/
private Object getMethods(final Class sender, final String name, final 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 (CategoryMethod cm : used) {
if (!cm.getDeclaringClass().getTheClass().isAssignableFrom(sender))
continue;
filterMatchingMethodForCategory(arr, cm);
}
answer = arr;
}
}
return answer;
}
/**
* Returns all the normal static methods on this class for the given name
*
* @return all the normal static methods available on this class for the
* given name
*/
private Object getStaticMethods(final Class sender, final 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;
}
/**
* Returns whether this MetaClassImpl has been modified. Since MetaClassImpl
* is not designed for modification this method always returns false
*
* @return false
*/
@Override
public boolean isModified() {
return false; // MetaClassImpl not designed for modification, just return false
}
/**
* Adds an instance method to this metaclass.
*
* @param method The method to be added
*/
@Override
public void addNewInstanceMethod(final Method method) {
CachedMethod cachedMethod = CachedMethod.find(method);
NewInstanceMetaMethod newMethod = new NewInstanceMetaMethod(cachedMethod);
addNewInstanceMethodToIndex(newMethod, metaMethodIndex.getHeader(newMethod.getDeclaringClass().getTheClass()));
}
private void addNewInstanceMethodToIndex(final MetaMethod newMethod, final MetaMethodIndex.Header header) {
if (!newGroovyMethodsSet.contains(newMethod)) {
newGroovyMethodsSet.add(newMethod);
addMetaMethodToIndex(newMethod, header);
}
}
/**
* Adds a static method to this metaclass.
*
* @param method The method to be added
*/
@Override
public void addNewStaticMethod(final Method method) {
CachedMethod cachedMethod = CachedMethod.find(method);
NewStaticMetaMethod newMethod = new NewStaticMetaMethod(cachedMethod);
addNewStaticMethodToIndex(newMethod, metaMethodIndex.getHeader(newMethod.getDeclaringClass().getTheClass()));
}
private void addNewStaticMethodToIndex(final MetaMethod newMethod, final MetaMethodIndex.Header header) {
if (!newGroovyMethodsSet.contains(newMethod)) {
newGroovyMethodsSet.add(newMethod);
addMetaMethodToIndex(newMethod, header);
}
}
/**
* Invoke a method on the given object with the given arguments.
*
* @param object The object the method should be invoked on.
* @param methodName The name of the method to invoke.
* @param arguments The arguments to the invoked method as null, a Tuple, an array or a single argument of any type.
* @return The result of the method invocation.
*/
@Override
public Object invokeMethod(final Object object, final String methodName, final Object arguments) {
if (arguments == null) {
return invokeMethod(object, methodName, MetaClassHelper.EMPTY_ARRAY);
}
if (arguments instanceof Tuple) {
return invokeMethod(object, methodName, ((Tuple) arguments).toArray());
}
if (arguments instanceof Object[]) {
return invokeMethod(object, methodName, (Object[]) arguments);
}
return invokeMethod(object, methodName, new Object[]{arguments});
}
/**
* Invoke a missing method on the given object with the given arguments.
*
* @param instance The object the method should be invoked on.
* @param methodName The name of the method to invoke.
* @param arguments The arguments to the invoked method.
* @return The result of the method invocation.
*/
@Override
public Object invokeMissingMethod(final Object instance, final String methodName, final Object[] arguments) {
return invokeMissingMethod(instance, methodName, arguments, null, false);
}
/**
* Invoke a missing property on the given object with the given arguments.
*
* @param instance The object the method should be invoked on.
* @param propertyName The name of the property to invoke.
* @param optionalValue The (optional) new value for the property
* @param isGetter Whether the method is a getter
* @return The result of the method invocation.
*/
@Override
public Object invokeMissingProperty(final Object instance, final String propertyName, final Object optionalValue, final boolean isGetter) {
MetaBeanProperty property = findPropertyInClassHierarchy(propertyName, theCachedClass);
if (property != null) {
onSuperPropertyFoundInHierarchy(property);
if (!isGetter) {
property.setProperty(instance, optionalValue);
return null;
}
return property.getProperty(instance);
}
// 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 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 instanceof ClosureMetaMethod) {
onSetPropertyFoundInHierarchy(method);
return method.invoke(instance, new Object[]{propertyName, optionalValue});
}
}
try {
if (!(instance instanceof Class)) {
if (isGetter) {
if (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;
}
Class theClass = instance instanceof Class ? (Class) instance : instance.getClass();
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);
}
metaProperty.setProperty(instance, optionalValue);
return null;
}
}
throw new MissingPropertyExceptionNoStack(propertyName, theClass);
}
private Object invokeMissingMethod(final Object instance, final String methodName, final Object[] arguments, final RuntimeException original, final boolean isCallToSuper) {
if (isCallToSuper) {
MetaClass metaClass = InvokerHelper.getMetaClass(theClass.getSuperclass());
return metaClass.invokeMissingMethod(instance, methodName, arguments);
}
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 instanceof ClosureMetaMethod) {
onInvokeMethodFoundInHierarchy(method);
return method.invoke(instance, invokeMethodArgs);
}
// last resort look in the category
if (method == null && GroovyCategorySupport.hasCategoryInCurrentThread()) {
method = getCategoryMethodMissing(instanceKlazz);
if (method != null) {
return method.invoke(instance, new Object[]{methodName, arguments});
}
}
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 a method on the given receiver for the specified arguments.
* The MetaClass will attempt to establish the method to invoke based on the name and arguments provided.
*
* @param object The object which the method was invoked on
* @param methodName The name of the method
* @param originalArguments The arguments to the method
* @return The return value of the method
* @see MetaClass#invokeMethod(Class, Object, String, Object[], boolean, boolean)
*/
public Object invokeMethod(Object object, String methodName, Object[] originalArguments) {
return invokeMethod(theClass, object, methodName, originalArguments, false, false);
}
private Object invokeMethodClosure(Object object, Object[] arguments) {
final MethodClosure mc = (MethodClosure) object;
final Object owner = mc.getOwner();
String methodName = mc.getMethod();
final Class ownerClass = owner instanceof Class ? (Class) owner : owner.getClass();
final MetaClass ownerMetaClass = registry.getMetaClass(ownerClass);
// To conform to "Least Surprise" principle, try to invoke method with original arguments first, which can match most of use cases
try {
return ownerMetaClass.invokeMethod(ownerClass, owner, methodName, arguments, false, false);
} catch (MissingMethodExceptionNoStack | InvokerInvocationException e) {
// CONSTRUCTOR REFERENCE
if (owner instanceof Class && MethodClosure.NEW.equals(methodName)) {
if (ownerClass.isArray()) {
if (0 == arguments.length) {
throw new GroovyRuntimeException("The arguments(specifying size) are required to create array[" + ownerClass.getCanonicalName() + "]");
}
int arrayDimension = ArrayTypeUtils.dimension(ownerClass);
if (arguments.length > arrayDimension) {
throw new GroovyRuntimeException("The length[" + arguments.length + "] of arguments should not be greater than the dimensions[" + arrayDimension + "] of array[" + ownerClass.getCanonicalName() + "]");
}
int[] sizeArray = new int[arguments.length];
for (int i = 0, n = sizeArray.length; i < n; i++) {
Object argument = arguments[i];
if (argument instanceof Integer) {
sizeArray[i] = (Integer) argument;
} else {
sizeArray[i] = Integer.parseInt(String.valueOf(argument));
}
}
Class arrayType =
arguments.length == arrayDimension
? ArrayTypeUtils.elementType(ownerClass) // Just for better performance, though we can use reduceDimension only
: ArrayTypeUtils.elementType(ownerClass, (arrayDimension - arguments.length));
return Array.newInstance(arrayType, sizeArray);
}
return ownerMetaClass.invokeConstructor(arguments);
}
// METHOD REFERENCE
// if and only if the owner is a class and the method closure can be related to some instance methods,
// try to invoke method with adjusted arguments(first argument is the actual owner) again.
// otherwise throw the MissingMethodExceptionNoStack.
if (!(owner instanceof Class
&& (Boolean) mc.getProperty(MethodClosure.ANY_INSTANCE_METHOD_EXISTS))) {
throw e;
}
if (arguments.length <= 0 || !(arguments[0].getClass().equals(ownerClass))) {
return invokeMissingMethod(object, methodName, arguments);
}
Object newOwner = arguments[0];
Object[] newArguments = Arrays.copyOfRange(arguments, 1, arguments.length);
return ownerMetaClass.invokeMethod(ownerClass, newOwner, methodName, newArguments, false, false);
}
}
/**
* Invokes a method on the given receiver for the specified arguments. The sender is the class that invoked the method on the object.
* The MetaClass will attempt to establish the method to invoke based on the name and arguments provided.
*
*
The isCallToSuper and fromInsideClass help the Groovy runtime perform optimisations on the call to go directly
* to the super class if necessary
*
* @param sender The java.lang.Class instance that invoked the method
* @param object The object which the method was invoked on
* @param methodName The name of the method
* @param originalArguments The arguments to the method
* @param isCallToSuper Whether the method is a call to a super class method
* @param fromInsideClass Whether the call was invoked from the inside or the outside of the class
* @return The return value of the method
* @see MetaClass#invokeMethod(Class, Object, String, Object[], boolean, boolean)
*/
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 = getMetaMethod(sender, object, 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) {
return this.invokeMethodClosure(object, arguments);
} 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:
Tuple2 tuple = invokeMethod(method, delegate, closure, methodName, argClasses, originalArguments, owner);
Object result = tuple.getV1();
method = tuple.getV2();
if (InvokeMethodResult.NONE != result) {
return result;
}
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:
Tuple2 t = invokeMethod(method, delegate, closure, methodName, argClasses, originalArguments, owner);
Object r = t.getV1();
method = t.getV2();
if (InvokeMethodResult.NONE != r) {
return r;
}
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) {
MetaMethod transformedMetaMethod = VM_PLUGIN.transformMetaMethod(this, method);
return transformedMetaMethod.doMethodInvoke(object, arguments);
} else {
return invokePropertyOrMissing(object, methodName, originalArguments, fromInsideClass, isCallToSuper);
}
}
private MetaMethod getMetaMethod(Class sender, Object object, String methodName, boolean isCallToSuper, Object... 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);
return method;
}
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 = createTransformMetaMethod(getMethodWithCaching(sender, methodName, newArguments, isCallToSuper));
}
return method;
}
protected MetaMethod createTransformMetaMethod(MetaMethod method) {
if (method == null) {
return null;
}
return 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);
}
};
}
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 static 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);
}
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.getCachedConstructor();
}
constructor = (CachedConstructor) chooseMethod("", constructors, arguments);
if (constructor != null) {
return constructor.getCachedConstructor();
}
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;
}
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 = 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 static 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) {
if (numberOfConstructors == -1) {
return selectConstructorAndTransformArguments1(arguments);
}
// falling back to pre 2.1.9 selection algorithm
// in practice this branch will only be reached if the class calling this code is a Groovy class
// compiled with an earlier version of the Groovy compiler
return selectConstructorAndTransformArguments0(numberOfConstructors, arguments);
}
private int selectConstructorAndTransformArguments0(final 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());
}
CachedConstructor constructor = createCachedConstructor(arguments);
List l = new ArrayList(constructors.toList());
Comparator comp = (arg0, 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);
};
l.sort(comp);
int found = -1;
for (int i = 0, n = l.size(); i < n; i++) {
if (l.get(i) != constructor) continue;
found = i;
break;
}
// NOTE: must be changed to "1 |" if constructor was vargs
return (found << 8);
}
private CachedConstructor createCachedConstructor(Object[] arguments) {
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) + ")");
}
return constructor;
}
/**
* Constructor selection algorithm for Groovy 2.1.9+.
* This selection algorithm was introduced as a workaround for GROOVY-6080. Instead of generating an index between
* 0 and N where N is the number of super constructors at the time the class is compiled, this algorithm uses
* a hash of the constructor descriptor instead.
*
* This has the advantage of letting the super class add new constructors while being binary compatible. But there
* are still problems with this approach:
*
* - There's a risk of hash collision, even if it's very low (two constructors of the same class must have the same hash)
* - If the super class adds a new constructor which takes as an argument a superclass of an existing constructor parameter and
* that this new constructor is selected at runtime, it would not find it.
*
*
* Hopefully in the last case, the error message is much nicer now since it explains that it's a binary incompatible change.
*
* @param arguments the actual constructor call arguments
* @return a hash used to identify the constructor to be called
* @since 2.1.9
*/
private int selectConstructorAndTransformArguments1(Object[] arguments) {
CachedConstructor constructor = createCachedConstructor(arguments);
final String methodDescriptor = BytecodeHelper.getMethodDescriptor(Void.TYPE, constructor.getNativeParameterTypes());
// keeping 3 bits for additional information such as vargs
return BytecodeHelper.hashCode(methodDescriptor);
}
/**
* 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.
*
* @since Groovy 2.1.0
*/
public static final 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.
*
* @since Groovy 2.1.0
*/
public MetaMethod retrieveConstructor(Object[] arguments) {
checkInitalised();
if (arguments == null) arguments = EMPTY_ARGUMENTS;
Class[] argTypes = MetaClassHelper.convertToTypeArray(arguments);
MetaClassHelper.unwrap(arguments);
Object res = chooseMethod("", constructors, argTypes);
if (res instanceof MetaMethod) return (MetaMethod) res;
CachedConstructor constructor = (CachedConstructor) res;
if (constructor != null) return new MetaConstructor(constructor, false);
// handle named args on class or inner class (one level only for now)
if ((arguments.length == 1 && arguments[0] instanceof Map) ||
(arguments.length == 2 && arguments[1] instanceof Map &&
theClass.getEnclosingClass() != null &&
theClass.getEnclosingClass().isAssignableFrom(argTypes[0]))) {
res = retrieveNamedArgCompatibleConstructor(argTypes, arguments);
}
if (res instanceof MetaMethod) return (MetaMethod) res;
constructor = (CachedConstructor) res;
if (constructor != null) return new MetaConstructor(constructor, true);
return null;
}
private Object retrieveNamedArgCompatibleConstructor(Class[] origArgTypes, Object[] origArgs) {
// if we get here Map variant already not found so allow for no-arg plus setters
Class[] argTypes = Arrays.copyOf(origArgTypes, origArgTypes.length - 1);
Object[] args = Arrays.copyOf(origArgs, origArgs.length - 1);
Object res = chooseMethod("", constructors, argTypes);
// chooseMethod allows fuzzy matching implicit null case but we don't want that here
// code here handles inner class case but we currently don't do fuzzy matching for inner classes
if (res instanceof ParameterTypes && ((ParameterTypes) res).getParameterTypes().length == origArgTypes.length) {
String prettyOrigArgs = InvokerHelper.toTypeString(origArgs);
if (prettyOrigArgs.endsWith("LinkedHashMap")) {
prettyOrigArgs = prettyOrigArgs.replaceFirst("LinkedHashMap$", "Map");
}
throw new GroovyRuntimeException(
"Could not find named-arg compatible constructor. Expecting one of:\n"
+ theClass.getName() + "(" + prettyOrigArgs + ")\n"
+ theClass.getName() + "(" + InvokerHelper.toTypeString(args) + ")"
);
}
return res;
}
private Object invokeConstructor(Class at, Object[] arguments) {
checkInitalised();
if (arguments == null) arguments = EMPTY_ARGUMENTS;
Class[] argTypes = MetaClassHelper.convertToTypeArray(arguments);
MetaClassHelper.unwrap(arguments);
CachedConstructor constructor = (CachedConstructor) chooseMethod("", constructors, argTypes);
if (constructor != null) {
return constructor.doConstructorInvoke(arguments);
}
// handle named args on class or inner class (one level only for now)
if ((arguments.length == 1 && arguments[0] instanceof Map) ||
(arguments.length == 2 && arguments[1] instanceof Map &&
theClass.getEnclosingClass() != null &&
theClass.getEnclosingClass().isAssignableFrom(argTypes[0]))) {
constructor = (CachedConstructor) retrieveNamedArgCompatibleConstructor(argTypes, arguments);
if (constructor != null) {
Object[] args = Arrays.copyOf(arguments, arguments.length - 1);
Object bean = constructor.doConstructorInvoke(args);
setProperties(bean, ((Map) arguments[arguments.length - 1]));
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 (Object o : map.entrySet()) {
Map.Entry entry = (Map.Entry) o;
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);
}
Tuple2 methodAndProperty = createMetaMethodAndMetaProperty(sender, sender, name, useSuper, isStatic);
MetaMethod method = methodAndProperty.getV1();
//----------------------------------------------------------------------
// getter
//----------------------------------------------------------------------
MetaProperty mp = methodAndProperty.getV2();
//----------------------------------------------------------------------
// field
//----------------------------------------------------------------------
if (method == null && mp != null) {
try {
return mp.getProperty(object);
} catch (IllegalArgumentException | CacheAccessControlException e) {
// can't access the field directly but there may be a getter
mp = null;
}
}
// check for propertyMissing provided through a category
Object[] arguments = EMPTY_ARGUMENTS;
if (method == null && !useSuper && !isStatic && GroovyCategorySupport.hasCategoryInCurrentThread()) {
method = getCategoryMethodGetter(sender, "propertyMissing", true);
if (method != null) arguments = new Object[]{name};
}
//----------------------------------------------------------------------
// 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);
}
if (object instanceof Collection) {
return DefaultGroovyMethods.getAt((Collection) object, name);
}
if (object instanceof Object[]) {
return DefaultGroovyMethods.getAt(Arrays.asList((Object[]) object), name);
}
MetaMethod addListenerMethod = 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
//----------------------------------------------------------------------
MetaMethod transformedMetaMethod = VM_PLUGIN.transformMetaMethod(this, method);
return transformedMetaMethod.doMethodInvoke(object, arguments);
}
//----------------------------------------------------------------------
// error due to missing method/field
//----------------------------------------------------------------------
if (isStatic || object instanceof Class) {
return invokeStaticMissingProperty(object, name, null, true);
}
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();
}
};
}
Tuple2 methodAndProperty = createMetaMethodAndMetaProperty(sender, theClass, name, useSuper, isStatic);
MetaMethod method = methodAndProperty.getV1();
//----------------------------------------------------------------------
// getter
//----------------------------------------------------------------------
MetaProperty mp = methodAndProperty.getV2();
//----------------------------------------------------------------------
// field
//----------------------------------------------------------------------
if (method != null) {
MetaMethod transformedMetaMethod = VM_PLUGIN.transformMetaMethod(this, method);
return new GetBeanMethodMetaProperty(name, transformedMetaMethod);
}
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) {
MetaMethod transformedMetaMethod = VM_PLUGIN.transformMetaMethod(this, method);
return new GetMethodMetaProperty(name, transformedMetaMethod);
}
}
// 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;
MetaMethod transformedMetaMethod = VM_PLUGIN.transformMetaMethod(this, method);
return new GetMethodMetaProperty(name, transformedMetaMethod);
}
//----------------------------------------------------------------------
// 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();
}
};
}
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();
}
};
}
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();
}
};
}
MetaMethod addListenerMethod = 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();
}
};
}
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 Tuple2 createMetaMethodAndMetaProperty(final Class senderForMP, final Class senderForCMG, final String name, final boolean useSuper, final boolean isStatic) {
MetaMethod method = null;
MetaProperty mp = getMetaProperty(senderForMP, name, useSuper, isStatic);
if ((mp == null || mp instanceof CachedField) && isUpperCase(name.charAt(0)) && (name.length() < 2 || !isUpperCase(name.charAt(1))) && !"Class".equals(name)) {
// GROOVY-9618 adjust because capitalised properties aren't stored as meta bean props
MetaProperty saved = mp;
mp = getMetaProperty(senderForMP, BeanUtils.decapitalize(name), useSuper, isStatic);
if (mp == null || (saved != null && mp instanceof CachedField)) {
// restore if we didn't find something better
mp = saved;
}
}
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(senderForCMG, getterName, false);
if (categoryMethod != null)
method = categoryMethod;
}
}
return new Tuple2<>(method, mp);
}
private static MetaMethod getCategoryMethodMissing(Class sender) {
List possibleGenericMethods = GroovyCategorySupport.getCategoryMethods("methodMissing");
if (possibleGenericMethods != null) {
for (Object possibleGenericMethod : possibleGenericMethods) {
MetaMethod mmethod = (MetaMethod) possibleGenericMethod;
if (!mmethod.getDeclaringClass().getTheClass().isAssignableFrom(sender))
continue;
CachedClass[] paramTypes = mmethod.getParameterTypes();
if (paramTypes.length == 2 && paramTypes[0].getTheClass() == String.class) {
return mmethod;
}
}
}
return null;
}
private static MetaMethod getCategoryMethodGetter(Class sender, String name, boolean useLongVersion) {
List possibleGenericMethods = GroovyCategorySupport.getCategoryMethods(name);
if (possibleGenericMethods != null) {
for (Object possibleGenericMethod : possibleGenericMethods) {
MetaMethod mmethod = (MetaMethod) possibleGenericMethod;
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 static MetaMethod getCategoryMethodSetter(Class sender, String name, boolean useLongVersion) {
List possibleGenericMethods = GroovyCategorySupport.getCategoryMethods(name);
if (possibleGenericMethods != null) {
for (Object possibleGenericMethod : possibleGenericMethods) {
MetaMethod mmethod = (MetaMethod) possibleGenericMethod;
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();
LinkedHashMap propertyMap = classPropertyIndex.get(theCachedClass);
if (propertyMap == null) {
// GROOVY-6903: May happen in some special environment, like under Android, due
// to classloading issues
propertyMap = new LinkedHashMap<>();
}
// simply return the values of the metaproperty map as a List
List ret = new ArrayList<>(propertyMap.size());
for (Map.Entry stringMetaPropertyEntry : propertyMap.entrySet()) {
MetaProperty element = stringMetaPropertyEntry.getValue();
if (element instanceof CachedField) continue;
// filter out DGM beans
if (element instanceof MetaBeanProperty) {
MetaBeanProperty mp = (MetaBeanProperty) element;
boolean setter = true;
boolean getter = true;
MetaMethod getterMetaMethod = mp.getGetter();
if (getterMetaMethod == null || getterMetaMethod instanceof GeneratedMetaMethod || getterMetaMethod instanceof NewInstanceMetaMethod) {
getter = false;
}
MetaMethod setterMetaMethod = mp.getSetter();
if (setterMetaMethod == null || setterMetaMethod instanceof GeneratedMetaMethod || setterMetaMethod 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());
// }
}
if (!permissivePropertyAccess) {
if (element instanceof MetaBeanProperty) {
MetaBeanProperty mbp = (MetaBeanProperty) element;
boolean getterAccessible = canAccessLegally(mbp.getGetter());
boolean setterAccessible = canAccessLegally(mbp.getSetter());
if (!(getterAccessible && setterAccessible)) continue;
}
}
ret.add(element);
}
return ret;
}
private static boolean canAccessLegally(MetaMethod accessor) {
boolean accessible = true;
if (accessor instanceof CachedMethod) {
CachedMethod cm = (CachedMethod) accessor;
accessible = cm.canAccessLegally(MetaClassImpl.class);
}
return accessible;
}
/**
* return null if nothing valid has been found, a MetaMethod (for getter always the case if not null) or
* a LinkedList<MetaMethod> if there are multiple setter
*/
private static Object filterPropertyMethod(Object methodOrList, boolean isGetter, boolean booleanGetter) {
// Method has been optimized to reach a target of 325 bytecode size, making it JIT'able
Object ret = null;
if (methodOrList instanceof MetaMethod) {
MetaMethod element = (MetaMethod) methodOrList;
int parameterCount = element.getParameterTypes().length;
if (!isGetter &&
//(element.getReturnType() == Void.class || element.getReturnType() == Void.TYPE) &&
parameterCount == 1) {
ret = element;
}
Class returnType = element.getReturnType();
if (isGetter &&
!(returnType == Void.class || returnType == Void.TYPE) &&
(!booleanGetter || returnType == Boolean.class || returnType == Boolean.TYPE) &&
parameterCount == 0) {
ret = element;
}
}
if (methodOrList instanceof FastArray) {
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];
int parameterCount = element.getParameterTypes().length;
if (!isGetter &&
//(element.getReturnType() == Void.class || element.getReturnType() == Void.TYPE) &&
parameterCount == 1) {
ret = addElementToList(ret, element);
}
Class returnType = element.getReturnType();
if (isGetter &&
!(returnType == Void.class || returnType == Void.TYPE) &&
parameterCount == 0) {
ret = addElementToList(ret, element);
}
}
}
if (ret == null
|| (ret instanceof MetaMethod)
|| !isGetter) {
return 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 (final Object o : ((List) ret)) {
MetaMethod element = (MetaMethod) o;
int localDistance = distanceToObject(element.getReturnType());
//TODO: maybe implement the case localDistance==distance
if (distance == -1 || distance > localDistance) {
distance = localDistance;
method = element;
}
}
return method;
}
private static 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).
*
* @param propertyDescriptors the property descriptors
*/
private void setupProperties(PropertyDescriptor[] propertyDescriptors) {
if (theCachedClass.isInterface) {
LinkedList superClasses = new LinkedList<>();
superClasses.add(ReflectionCache.OBJECT_CLASS);
LinkedList superInterfaces = 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 (superInterfaces.size() > 1) {
superInterfaces.sort(CACHED_CLASS_NAME_COMPARATOR);
}
Map iPropertyIndex = classPropertyIndex.computeIfAbsent(theCachedClass, k -> new LinkedHashMap<>());
for (CachedClass iclass : superInterfaces) {
Map sPropertyIndex = classPropertyIndex.computeIfAbsent(iclass, k -> new LinkedHashMap<>());
copyNonPrivateFields(sPropertyIndex, iPropertyIndex, null);
addFields(iclass, iPropertyIndex);
}
addFields(theCachedClass, iPropertyIndex);
applyPropertyDescriptors(propertyDescriptors);
applyStrayPropertyMethods(superClasses, classPropertyIndex, true);
makeStaticPropertyIndex();
} else {
LinkedList superClasses = getSuperClasses();
LinkedList superInterfaces = 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 (superInterfaces.size() > 1) {
superInterfaces.sort(CACHED_CLASS_NAME_COMPARATOR);
}
// if this an Array, then add the special read-only "length" property
if (theCachedClass.isArray) {
LinkedHashMap map = new LinkedHashMap<>();
map.put("length", arrayLengthProperty);
classPropertyIndex.put(theCachedClass, map);
}
inheritStaticInterfaceFields(superClasses, new LinkedHashSet<>(superInterfaces));
inheritFields(superClasses);
applyPropertyDescriptors(propertyDescriptors);
applyStrayPropertyMethods(superClasses, classPropertyIndex, true);
applyStrayPropertyMethods(superClasses, classPropertyIndexForSuper, false);
copyClassPropertyIndexForSuper(classPropertyIndexForSuper);
makeStaticPropertyIndex();
}
}
private void makeStaticPropertyIndex() {
LinkedHashMap propertyMap = classPropertyIndex.computeIfAbsent(theCachedClass, k -> new LinkedHashMap<>());
for (Map.Entry entry : propertyMap.entrySet()) {
MetaProperty mp = 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 if (mp instanceof MultipleSetterProperty) {
MultipleSetterProperty msp = (MultipleSetterProperty) mp;
mp = msp.createStaticVersion();
} else {
continue; // ignore all other types
}
staticPropertyIndex.put(entry.getKey(), mp);
}
}
private static 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(Map> dest) {
for (Map.Entry> entry : classPropertyIndex.entrySet()) {
LinkedHashMap newVal = new LinkedHashMap<>();
dest.put(entry.getKey(), newVal);
}
}
private void inheritStaticInterfaceFields(List superClasses, Set interfaces) {
for (CachedClass iclass : interfaces) {
LinkedHashMap iPropertyIndex = classPropertyIndex.computeIfAbsent(iclass, k -> new LinkedHashMap<>());
addFields(iclass, iPropertyIndex);
for (CachedClass superClass : superClasses) {
if (!iclass.getTheClass().isAssignableFrom(superClass.getTheClass())) continue;
LinkedHashMap sPropertyIndex = classPropertyIndex.computeIfAbsent(superClass, k -> new LinkedHashMap<>());
copyNonPrivateFields(iPropertyIndex, sPropertyIndex, null);
}
}
}
private void inheritFields(LinkedList superClasses) {
LinkedHashMap last = null;
for (CachedClass klass : superClasses) {
LinkedHashMap propertyIndex = classPropertyIndex.computeIfAbsent(klass, k -> new LinkedHashMap<>());
if (last != null) {
copyNonPrivateFields(last, propertyIndex, klass);
}
last = propertyIndex;
addFields(klass, propertyIndex);
}
}
private static void addFields(CachedClass klass, Map propertyIndex) {
for (CachedField field : klass.getFields()) {
propertyIndex.put(field.getName(), field);
}
}
private static void copyNonPrivateFields(Map from, Map to, @Nullable CachedClass klass) {
for (Map.Entry entry : from.entrySet()) {
CachedField field = (CachedField) entry.getValue();
int modifiers = field.getModifiers();
if (Modifier.isPublic(modifiers) || Modifier.isProtected(modifiers) || (!Modifier.isPrivate(modifiers)
&& klass != null && inSamePackage(field.getDeclaringClass(), klass.getTheClass()))) {
to.put(entry.getKey(), field);
}
}
}
private void applyStrayPropertyMethods(LinkedList superClasses, Map> 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());
Map propertyIndex = classPropertyIndex.computeIfAbsent(klass, k -> new LinkedHashMap<>());
for (MetaMethodIndex.Entry e = header.head; e != null; e = e.nextClassEntry) {
String methodName = e.name;
// name too short?
final int methodNameLength = methodName.length();
if (methodNameLength < 3 ||
(methodNameLength < 4 && !methodName.startsWith("is"))) continue;
// possible getter/setter?
boolean isBooleanGetter = methodName.startsWith("is");
boolean isGetter = methodName.startsWith("get") || isBooleanGetter;
boolean isSetter = methodName.startsWith("set");
if (!isGetter && !isSetter) continue;
Object propertyMethods = filterPropertyMethod(isThis ? e.methods : e.methodsForSuper, isGetter, isBooleanGetter);
if (propertyMethods == null) continue;
String propName = getPropName(methodName);
if (propertyMethods instanceof MetaMethod) {
createMetaBeanProperty(propertyIndex, propName, isGetter, (MetaMethod) propertyMethods);
} else {
LinkedList methods = (LinkedList) propertyMethods;
for (MetaMethod m : methods) {
createMetaBeanProperty(propertyIndex, propName, isGetter, m);
}
}
}
}
}
private static final ConcurrentMap PROP_NAMES = new ConcurrentHashMap<>(1024);
private static String getPropName(String methodName) {
return PROP_NAMES.computeIfAbsent(methodName, k -> {
// assume "is" or "[gs]et"
return BeanUtils.decapitalize(methodName.startsWith("is")
? methodName.substring(2) : methodName.substring(3));
});
}
private static MetaProperty makeReplacementMetaProperty(MetaProperty mp, String propName, boolean isGetter, MetaMethod propertyMethod) {
if (mp == null) {
if (isGetter) {
return new MetaBeanProperty(propName,
propertyMethod.getReturnType(),
propertyMethod, null);
} else {
//isSetter
return new MetaBeanProperty(propName,
propertyMethod.getParameterTypes()[0].getTheClass(),
null, propertyMethod);
}
}
if (mp instanceof CachedField) {
CachedField mfp = (CachedField) mp;
MetaBeanProperty mbp = new MetaBeanProperty(propName, mfp.getType(),
isGetter ? propertyMethod : null,
isGetter ? null : propertyMethod);
mbp.setField(mfp);
return mbp;
} else if (mp instanceof MultipleSetterProperty) {
MultipleSetterProperty msp = (MultipleSetterProperty) mp;
if (isGetter) {
msp.setGetter(propertyMethod);
}
return msp;
} else if (mp instanceof MetaBeanProperty) {
MetaBeanProperty mbp = (MetaBeanProperty) mp;
if (isGetter) {
mbp.setGetter(propertyMethod);
return mbp;
} else if (mbp.getSetter() == null || mbp.getSetter() == propertyMethod) {
mbp.setSetter(propertyMethod);
return mbp;
} else {
MultipleSetterProperty msp = new MultipleSetterProperty(propName);
msp.setField(mbp.getField());
msp.setGetter(mbp.getGetter());
return msp;
}
} else {
throw new GroovyBugError("unknown MetaProperty class used. Class is " + mp.getClass());
}
}
private static void createMetaBeanProperty(Map propertyIndex, String propName, boolean isGetter, MetaMethod propertyMethod) {
// is this property already accounted for?
MetaProperty mp = propertyIndex.get(propName);
MetaProperty newMp = makeReplacementMetaProperty(mp, propName, isGetter, propertyMethod);
if (newMp != mp) {
propertyIndex.put(propName, newMp);
}
}
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 {
LinkedHashMap propertyMap = classPropertyIndex.computeIfAbsent(theCachedClass, k -> new LinkedHashMap<>());
//keep field
CachedField field;
MetaProperty old = propertyMap.get(mp.getName());
if (old != null) {
if (old instanceof MetaBeanProperty) {
field = ((MetaBeanProperty) old).getField();
} else if (old instanceof MultipleSetterProperty) {
field = ((MultipleSetterProperty) 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);
}
}
/**
* Retrieves a property on the given receiver for the specified arguments. The sender is the class that is requesting the property from the object.
* The MetaClass will attempt to establish the method to invoke based on the name and arguments provided.
*
*
The useSuper and fromInsideClass help the Groovy runtime perform optimisations on the call to go directly
* to the super class if necessary
*
* @param sender The java.lang.Class instance that is mutating the property
* @param object The Object which the property is being set on
* @param name The name of the property
* @param newValue The new value of the property to set
* @param useSuper Whether the call is to a super class property
* @param fromInsideClass Whether the call was invoked from the inside or the outside of the class.
*/
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 = 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) {
int modifiers = field.getModifiers();
if (Modifier.isFinal(modifiers)) {
// GROOVY-5985
if (!isStatic && this.isMap) {
((Map) object).put(name, newValue);
return;
}
throw new ReadOnlyPropertyException(name, theClass);
}
if (!this.isMap || Modifier.isPublic(modifiers) || Modifier.isProtected(modifiers)) {
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 setter 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;
}
MetaMethod transformedMetaMethod = VM_PLUGIN.transformMetaMethod(this, method);
transformedMetaMethod.doMethodInvoke(object, arguments);
return;
}
//----------------------------------------------------------------------
// turn setProperty on a Map to put on the Map itself
//----------------------------------------------------------------------
if (method == null && !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);
}
if ((isStatic || object instanceof Class) && !"metaClass".equals(name)) {
invokeStaticMissingProperty(object, name, newValue, false);
} else {
invokeMissingProperty(object, name, newValue, false);
}
}
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) {
Map propertyMap;
if (useStatic) {
propertyMap = staticPropertyIndex;
} else if (useSuper) {
propertyMap = classPropertyIndexForSuper.get(clazz);
} else {
propertyMap = classPropertyIndex.get(clazz);
}
if (propertyMap == null) {
if (clazz != theCachedClass) {
clazz = theCachedClass;
continue;
} else {
return null;
}
}
return propertyMap.get(name);
}
}
private MetaProperty getMetaProperty(String name, boolean useStatic) {
CachedClass clazz = theCachedClass;
Map propertyMap;
if (useStatic) {
propertyMap = staticPropertyIndex;
} else {
propertyMap = classPropertyIndex.get(clazz);
}
if (propertyMap == null) {
return null;
}
return propertyMap.get(name);
}
/**
* Retrieves the value of an attribute (field). This method is to support the Groovy runtime and not for general client API usage.
*
* @param sender The class of the object that requested the attribute
* @param object The instance
* @param attribute The name of the attribute
* @param useSuper Whether to look-up on the super class or not
* @return The attribute value
*/
public Object getAttribute(final Class sender, final Object object, final String attribute, final boolean useSuper) {
return getAttribute(sender, object, attribute, useSuper, false);
}
/**
* Retrieves the value of an attribute (field). This method is to support the Groovy runtime and not for general client API usage.
*
* @param sender The class of the object that requested the attribute
* @param object The instance the attribute is to be retrieved from
* @param attribute The name of the attribute
* @param useSuper Whether to look-up on the super class or not
* @param fromInsideClass Whether the call was invoked from the inside or the outside of the class.
* @return The attribute value
*/
public Object getAttribute(final Class sender, final Object object, final String attribute, final boolean useSuper, final 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, !useSuper ? theClass : theClass.getSuperclass());
}
/**
* Sets an attribute on the given receiver for the specified arguments. The sender is the class that is setting the attribute from the object.
* The MetaClass will attempt to establish the method to invoke based on the name and arguments provided.
*
*
The isCallToSuper and fromInsideClass help the Groovy runtime perform optimisations on the call to go directly
* to the super class if necessary
*
* @param sender The java.lang.Class instance that is mutating the property
* @param object The Object which the property is being set on
* @param attribute The name of the attribute,
* @param newValue The new value of the attribute to set
* @param useSuper Whether the call is to a super class property
* @param fromInsideClass Whether the call was invoked from the inside or the outside of the class
*/
public void setAttribute(final Class sender, final Object object, final String attribute, final Object newValue, final boolean useSuper, final 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, !useSuper ? theClass : theClass.getSuperclass());
}
/**
* Obtains a reference to the original AST for the MetaClass if it is available at runtime
*
* @return The original AST or null if it cannot be returned
*/
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 = (writer, node) -> {
if (node.getName().equals(theClass.getName())) {
MetaClassImpl.this.classNode = node;
}
};
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;
}
/**
* Returns a string representation of this metaclass
*/
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 static boolean isSetPropertyMethod(MetaMethod metaMethod) {
return SET_PROPERTY_METHOD.equals(metaMethod.getName()) && metaMethod.getParameterTypes().length == 2;
}
private static boolean isGetPropertyMethod(MetaMethod metaMethod) {
return GET_PROPERTY_METHOD.equals(metaMethod.getName());
}
private static 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;
}
protected void setInitialized(boolean initialized) {
this.initialized = initialized;
}
/**
* @return {@code false}: add method
* {@code null} : ignore method
* {@code true} : replace
*/
private static 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 static 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 (Boolean.TRUE.equals(match)) {
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;
}
}
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 the 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 {
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 {
List 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) {
return doChooseMostSpecificParams(theClass.getName(), name, matchingMethods, arguments, false);
}
protected static Object doChooseMostSpecificParams(String theClassName, String name, List matchingMethods, Class[] arguments, boolean checkParametersCompatible) {
long matchesDistance = -1;
LinkedList matches = new LinkedList();
for (Object method : matchingMethods) {
final ParameterTypes parameterTypes = (ParameterTypes) method;
if (checkParametersCompatible && !MetaClassHelper.parametersAreCompatible(arguments, parameterTypes.getNativeParameterTypes()))
continue;
long dist = MetaClassHelper.calculateParameterDistance(arguments, parameterTypes);
if (dist == 0) return method;
matchesDistance = handleMatches(matchesDistance, matches, method, dist);
}
int size = matches.size();
if (1 == size) {
return matches.getFirst();
}
if (0 == size) {
return null;
}
//more than one matching method found --> ambiguous!
throw new GroovyRuntimeException(createErrorMessageForAmbiguity(theClassName, name, arguments, matches));
}
protected static String createErrorMessageForAmbiguity(String theClassName, String name, Class[] arguments, LinkedList matches) {
StringBuilder msg = new StringBuilder("Ambiguous method overloading for method ");
msg.append(theClassName).append("#").append(name)
.append(".\nCannot resolve which method to invoke for ")
.append(InvokerHelper.toString(arguments))
.append(" due to overlapping prototypes between:");
for (final Object match : matches) {
CachedClass[] types = ((ParameterTypes) match).getParameterTypes();
msg.append("\n\t").append(InvokerHelper.toString(types));
}
return msg.toString();
}
protected static long handleMatches(long matchesDistance, LinkedList matches, Object method, long dist) {
if (matches.isEmpty()) {
matches.add(method);
matchesDistance = dist;
} else if (dist < matchesDistance) {
matchesDistance = dist;
matches.clear();
matches.add(method);
} else if (dist == matchesDistance) {
matches.add(method);
}
return matchesDistance;
}
private static boolean isGenericGetMethod(MetaMethod method) {
if (method.getName().equals("get")) {
CachedClass[] parameterTypes = method.getParameterTypes();
return parameterTypes.length == 1 && parameterTypes[0].getTheClass() == String.class;
}
return false;
}
/**
* Complete the initialisation process. After this method
* is called no methods should be added to the meta class.
* Invocation of methods or access to fields/properties is
* forbidden unless this method is called. This method
* should contain any initialisation code, taking a longer
* time to complete. An example is the creation of the
* Reflector. It is suggested to synchronize this
* method.
*/
public synchronized void initialize() {
if (!isInitialized()) {
fillMethodIndex();
try {
addProperties();
} catch (Throwable e) {
if (!AndroidSupport.isRunningAndroid()) {
UncheckedThrow.rethrow(e);
}
// Introspection failure...
// May happen in Android
}
setInitialized(true);
}
}
private void addProperties() {
BeanInfo info;
// introspect
try {
if (isBeanDerivative(theClass)) {
info = (BeanInfo) AccessController.doPrivileged((PrivilegedExceptionAction) () -> Introspector.getBeanInfo(theClass, Introspector.IGNORE_ALL_BEANINFO));
} else {
info = (BeanInfo) AccessController.doPrivileged((PrivilegedExceptionAction) () -> 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 static 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);
}
/**
* Retrieves the list of MetaMethods held by the class. This list does not include MetaMethods added by groovy.lang.ExpandoMetaClass.
*
* @return A list of MetaMethods
*/
public List getMethods() {
return allMethods;
}
/**
* Retrieves the list of MetaMethods held by this class. This list includes MetaMethods added by groovy.lang.ExpandoMetaClass.
*
* @return A list of MetaMethods
*/
public List getMetaMethods() {
return new ArrayList<>(newGroovyMethodsSet);
}
protected void dropStaticMethodCache(String name) {
metaMethodIndex.clearCaches(name);
}
protected void dropMethodCache(String name) {
metaMethodIndex.clearCaches(name);
}
/**
* Create a CallSite
*/
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);
}
/**
* Create a CallSite
*/
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);
}
/**
* Create a CallSite
*/
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);
}
/**
* Create a CallSite
*/
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);
}
/**
* Create a CallSite
*/
public CallSite createConstructorSite(CallSite site, Object[] args) {
if (!(this instanceof AdaptingMetaClass)) {
Class[] argTypes = MetaClassHelper.convertToTypeArray(args);
CachedConstructor constructor = (CachedConstructor) chooseMethod("", constructors, argTypes);
if (constructor != null) {
return ConstructorSite.createConstructorSite(site, this, constructor, argTypes, args);
}
if ((args.length == 1 && args[0] instanceof Map) ||
(args.length == 2 && args[1] instanceof Map &&
theClass.getEnclosingClass() != null &&
theClass.getEnclosingClass().isAssignableFrom(argTypes[0]))) {
constructor = (CachedConstructor) retrieveNamedArgCompatibleConstructor(argTypes, args);
if (constructor != null) {
return args.length == 1
? new ConstructorSite.NoParamSite(site, this, constructor, argTypes)
: new ConstructorSite.NoParamSiteInnerClass(site, this, constructor, argTypes);
}
}
}
return new MetaClassConstructorSite(site, this);
}
/**
* Returns the ClassInfo for the contained Class
*
* @return The ClassInfo for the contained class.
*/
public ClassInfo getClassInfo() {
return theCachedClass.classInfo;
}
/**
* Returns version of the contained Class
*
* @return The version of the contained class.
*/
public int getVersion() {
return theCachedClass.classInfo.getVersion();
}
/**
* Increments version of the contained Class
*/
public void incVersion() {
theCachedClass.classInfo.incVersion();
}
/**
* Retrieves a list of additional MetaMethods held by this class
*
* @return A list of MetaMethods
*/
public MetaMethod[] getAdditionalMetaMethods() {
return additionalMetaMethods;
}
protected MetaBeanProperty findPropertyInClassHierarchy(String propertyName, CachedClass theClass) {
if (theClass == null || theClass == ReflectionCache.OBJECT_CLASS)
return null;
final CachedClass superClass = theClass.getCachedSuperClass();
if (superClass == null)
return null;
MetaBeanProperty property = 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 static 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);
method = getMetaMethod(instanceKlazz, methodName, arguments, metaClass, method);
method = findOwnMethod(instanceKlazz, methodName, arguments, metaClass, method);
return method;
}
private static MetaMethod getMetaMethod(Class instanceKlazz, String methodName, Class[] arguments, MetaClass metaClass, MetaMethod method) {
MetaMethod infMethod = searchInterfacesForMetaMethod(instanceKlazz, methodName, arguments, metaClass);
if (infMethod != null) {
method = (method == null ? infMethod : mostSpecific(method, infMethod, instanceKlazz));
}
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;
method = findSubClassMethod(instanceKlazz, arguments, method, m);
} else {
FastArray arr = (FastArray) list;
for (int i = 0; i != arr.size(); ++i) {
MetaMethod m = (MetaMethod) arr.get(i);
method = findSubClassMethod(instanceKlazz, arguments, method, m);
}
}
}
}
return method;
}
private static MetaMethod findSubClassMethod(Class instanceKlazz, Class[] arguments, MetaMethod method, MetaMethod m) {
if (m.getDeclaringClass().getTheClass().isAssignableFrom(instanceKlazz) && m.isValidExactMethod(arguments)) {
method = (method == null ? m : 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);
method = getMetaMethod(instanceKlazz, methodName, arguments, infMetaClass, method);
}
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()) {
MetaMethod ownMethod = metaClass.pickMethod(methodName, arguments);
if (ownMethod != null) {
method = (method == null ? ownMethod : 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(final Class clazz) {
return false;
}
}
/**
* Retrieves a property on the given object for the specified arguments.
*
* @param object The Object which the property is being retrieved from
* @param property The name of the property
* @return The properties value
*/
public Object getProperty(Object object, String property) {
return getProperty(theClass, object, property, false, false);
}
/**
*
Sets a property on the given object for the specified arguments.
*
* @param object The Object which the property is being retrieved from
* @param property The name of the property
* @param newValue The new value
*/
public void setProperty(Object object, String property, Object newValue) {
setProperty(theClass, object, property, newValue, false, false);
}
/**
* Retrieves the value of an attribute (field). This method is to support the Groovy runtime and not for general client API usage.
*
* @param object The object to get the attribute from
* @param attribute The name of the attribute
* @return The attribute value
*/
public Object getAttribute(final Object object, final String attribute) {
return getAttribute(theClass, object, attribute, false, false);
}
/**
* Sets the value of an attribute (field). This method is to support the Groovy runtime and not for general client API usage.
*
* @param object The object to get the attribute from
* @param attribute The name of the attribute
* @param newValue The new value of the attribute
*/
public void setAttribute(final Object object, final String attribute, final Object newValue) {
setAttribute(theClass, object, attribute, newValue, false, false);
}
/**
* Selects a method by name and argument classes. This method
* does not search for an exact match, it searches for a compatible
* method. For this the method selection mechanism is used as provided
* by the implementation of this MetaClass. pickMethod may or may
* not be used during the method selection process when invoking a method.
* There is no warranty for that.
*
* @param methodName the name of the method to pick
* @param arguments the method arguments
* @return a matching MetaMethod or null
* @throws GroovyRuntimeException if there is more than one matching method
*/
public MetaMethod pickMethod(String methodName, Class[] arguments) {
return getMethodWithoutCaching(theClass, methodName, arguments, false);
}
/**
* indicates is the meta class method invocation for non-static methods is done
* through a custom invoker object.
*
* @return true - if the method invocation is not done by the meta class itself
*/
public boolean hasCustomInvokeMethod() {
return invokeMethodMethod != null;
}
/**
* indicates is the meta class method invocation for static methods is done
* through a custom invoker object.
*
* @return true - if the method invocation is not done by the meta class itself
*/
public boolean hasCustomStaticInvokeMethod() {
return 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();
}
@Deprecated
private static final SingleKeyHashMap.Copier NAME_INDEX_COPIER = value -> {
if (value instanceof FastArray) {
return ((FastArray) value).copy();
} else {
return value;
}
};
@Deprecated
private static final SingleKeyHashMap.Copier METHOD_INDEX_COPIER = value -> SingleKeyHashMap.copy(new SingleKeyHashMap(false), (SingleKeyHashMap) value, NAME_INDEX_COPIER);
/**
* @deprecated use {@link LinkedHashMap} instead
*/
@Deprecated
static 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();
}
}
/**
* @deprecated use {@link LinkedHashMap} instead
*/
@Deprecated
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) {
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;
}
}
private Tuple2 invokeMethod(MetaMethod method,
Object delegate,
Closure closure,
String methodName,
Class[] argClasses,
Object[] originalArguments,
Object owner) {
if (method == null && delegate != closure && delegate != null) {
MetaClass delegateMetaClass = lookupObjectMetaClass(delegate);
method = delegateMetaClass.pickMethod(methodName, argClasses);
if (method != null)
return new Tuple2<>(delegateMetaClass.invokeMethod(delegate, methodName, originalArguments), method);
}
if (method == null && owner != closure) {
MetaClass ownerMetaClass = lookupObjectMetaClass(owner);
method = ownerMetaClass.pickMethod(methodName, argClasses);
if (method != null)
return new Tuple2<>(ownerMetaClass.invokeMethod(owner, methodName, originalArguments), method);
}
return new Tuple2<>(InvokeMethodResult.NONE, method);
}
private enum InvokeMethodResult {
NONE
}
public boolean isPermissivePropertyAccess() {
return permissivePropertyAccess;
}
public void setPermissivePropertyAccess(boolean permissivePropertyAccess) {
this.permissivePropertyAccess = permissivePropertyAccess;
}
}