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/*
* Copyright 2010 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.gradle.api.internal;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Maps;
import groovy.lang.Closure;
import groovy.lang.GroovyObject;
import groovy.lang.GroovySystem;
import groovy.lang.MetaClass;
import groovy.lang.MetaClassRegistry;
import org.apache.commons.lang.StringUtils;
import org.gradle.api.Action;
import org.gradle.api.Transformer;
import org.gradle.api.internal.provider.PropertyInternal;
import org.gradle.api.plugins.Convention;
import org.gradle.api.plugins.ExtensionAware;
import org.gradle.internal.UncheckedException;
import org.gradle.internal.metaobject.AbstractDynamicObject;
import org.gradle.internal.metaobject.BeanDynamicObject;
import org.gradle.internal.metaobject.DynamicObject;
import org.gradle.internal.metaobject.PropertyAccess;
import org.gradle.internal.reflect.JavaReflectionUtil;
import org.gradle.internal.service.ServiceRegistry;
import org.gradle.model.internal.asm.AsmClassGenerator;
import org.gradle.util.CollectionUtils;
import org.gradle.util.ConfigureUtil;
import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.Type;
import javax.annotation.Nullable;
import java.lang.annotation.Annotation;
import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import static org.gradle.model.internal.asm.AsmClassGeneratorUtils.signature;
import static org.objectweb.asm.Opcodes.*;
import static org.objectweb.asm.Type.VOID_TYPE;
public class AsmBackedClassGenerator extends AbstractClassGenerator {
@Override
protected ClassBuilder start(Class type, ClassMetaData classMetaData) {
return new ClassBuilderImpl(type, classMetaData);
}
private static class ClassBuilderImpl implements ClassBuilder {
public static final int PV_FINAL_STATIC = Opcodes.ACC_PRIVATE | ACC_STATIC | Opcodes.ACC_FINAL | Opcodes.ACC_SYNTHETIC;
private static final Set> PRIMITIVE_TYPES = ImmutableSet.of(Byte.TYPE, Boolean.TYPE, Character.TYPE, Short.TYPE, Integer.TYPE, Long.TYPE, Float.TYPE, Double.TYPE);
private static final String DYNAMIC_OBJECT_HELPER_FIELD = "__dyn_obj__";
private static final String MAPPING_FIELD = "__mapping__";
private static final String META_CLASS_FIELD = "__meta_class__";
private static final String CONVENTION_MAPPING_FIELD_DESCRIPTOR = Type.getDescriptor(ConventionMapping.class);
private static final String META_CLASS_TYPE_DESCRIPTOR = Type.getDescriptor(MetaClass.class);
private final static Type META_CLASS_TYPE = Type.getType(MetaClass.class);
private final static Type GENERATED_SUBCLASS_TYPE = Type.getType(GeneratedSubclass.class);
private final static Type CONVENTION_AWARE_TYPE = Type.getType(IConventionAware.class);
private final static Type CONVENTION_AWARE_HELPER_TYPE = Type.getType(ConventionAwareHelper.class);
private final static Type DYNAMIC_OBJECT_AWARE_TYPE = Type.getType(DynamicObjectAware.class);
private final static Type EXTENSION_AWARE_TYPE = Type.getType(ExtensionAware.class);
private final static Type HAS_CONVENTION_TYPE = Type.getType(HasConvention.class);
private final static Type DYNAMIC_OBJECT_TYPE = Type.getType(DynamicObject.class);
private final static Type CONVENTION_MAPPING_TYPE = Type.getType(ConventionMapping.class);
private final static Type GROOVY_OBJECT_TYPE = Type.getType(GroovyObject.class);
private final static Type CONVENTION_TYPE = Type.getType(Convention.class);
private final static Type ABSTRACT_DYNAMIC_OBJECT_TYPE = Type.getType(AbstractDynamicObject.class);
private final static Type EXTENSIBLE_DYNAMIC_OBJECT_HELPER_TYPE = Type.getType(MixInExtensibleDynamicObject.class);
private final static Type NON_EXTENSIBLE_DYNAMIC_OBJECT_HELPER_TYPE = Type.getType(BeanDynamicObject.class);
private static final String JAVA_REFLECT_TYPE_DESCRIPTOR = Type.getDescriptor(java.lang.reflect.Type.class);
private static final Type CONFIGURE_UTIL_TYPE = Type.getType(ConfigureUtil.class);
private static final Type CLOSURE_TYPE = Type.getType(Closure.class);
private static final Type SERVICE_REGISTRY_TYPE = Type.getType(ServiceRegistry.class);
private static final String SERVICE_REGISTRY_METHOD_DESCRIPTOR = Type.getMethodDescriptor(SERVICE_REGISTRY_TYPE);
private static final Type JAVA_LANG_REFLECT_TYPE = Type.getType(java.lang.reflect.Type.class);
private static final Type OBJECT_TYPE = Type.getType(Object.class);
private static final Type CLASS_TYPE = Type.getType(Class.class);
private static final Type METHOD_TYPE = Type.getType(Method.class);
private static final Type STRING_TYPE = Type.getType(String.class);
private static final Type CLASS_ARRAY_TYPE = Type.getType(Class[].class);
private static final Type GROOVY_SYSTEM_TYPE = Type.getType(GroovySystem.class);
private static final Type META_CLASS_REGISTRY_TYPE = Type.getType(MetaClassRegistry.class);
private static final Type BOOLEAN_TYPE = Type.getType(Boolean.TYPE);
private static final Type OBJECT_ARRAY_TYPE = Type.getType(Object[].class);
private static final Type ACTION_TYPE = Type.getType(Action.class);
private static final Type WITH_SERVICE_REGISTRY = Type.getType(DependencyInjectingInstantiator.WithServiceRegistry.class);
private static final Type PROPERTY_INTERNAL_TYPE = Type.getType(PropertyInternal.class);
private static final String RETURN_VOID_FROM_OBJECT = Type.getMethodDescriptor(Type.VOID_TYPE, OBJECT_TYPE);
private static final String RETURN_VOID_FROM_OBJECT_CLASS_DYNAMIC_OBJECT = Type.getMethodDescriptor(Type.VOID_TYPE, OBJECT_TYPE, CLASS_TYPE, DYNAMIC_OBJECT_TYPE);
private static final String RETURN_CLASS = Type.getMethodDescriptor(CLASS_TYPE);
private static final String RETURN_VOID_FROM_CONVENTION_AWARE_CONVENTION = Type.getMethodDescriptor(Type.VOID_TYPE, CONVENTION_AWARE_TYPE, CONVENTION_TYPE);
private static final String RETURN_CONVENTION = Type.getMethodDescriptor(CONVENTION_TYPE);
private static final String RETURN_DYNAMIC_OBJECT = Type.getMethodDescriptor(DYNAMIC_OBJECT_TYPE);
private static final String RETURN_META_CLASS_FROM_CLASS = Type.getMethodDescriptor(Type.getType(MetaClass.class), CLASS_TYPE);
private static final String RETURN_BOOLEAN_FROM_STRING = Type.getMethodDescriptor(BOOLEAN_TYPE, STRING_TYPE);
private static final String RETURN_META_CLASS_REGISTRY = Type.getMethodDescriptor(Type.getType(MetaClassRegistry.class));
private static final String GET_DECLARED_METHOD_DESCRIPTOR = Type.getMethodDescriptor(METHOD_TYPE, STRING_TYPE, CLASS_ARRAY_TYPE);
private static final String GET_METHOD_DESCRIPTOR = Type.getMethodDescriptor(OBJECT_TYPE, JAVA_LANG_REFLECT_TYPE);
private static final String[] EMPTY_STRINGS = new String[0];
private static final Type[] EMPTY_TYPES = new Type[0];
private static final String SERVICES_FIELD = "_services";
private final ClassWriter visitor;
private final Class type;
private final Type generatedType;
private final Type superclassType;
private final Map genericReturnTypeConstantsIndex = Maps.newHashMap();
private final AsmClassGenerator classGenerator;
private boolean hasMappingField;
private final boolean conventionAware;
private final boolean extensible;
private final boolean providesOwnDynamicObject;
private ClassBuilderImpl(Class type, ClassMetaData classMetaData) {
this.type = type;
classGenerator = new AsmClassGenerator(type, "_Decorated");
visitor = classGenerator.getVisitor();
generatedType = classGenerator.getGeneratedType();
superclassType = Type.getType(type);
extensible = classMetaData.isExtensible();
conventionAware = classMetaData.isConventionAware();
providesOwnDynamicObject = classMetaData.providesDynamicObjectImplementation();
}
public void startClass(boolean shouldImplementWithServices) {
List interfaceTypes = new ArrayList();
interfaceTypes.add(GENERATED_SUBCLASS_TYPE.getInternalName());
if (conventionAware && extensible) {
interfaceTypes.add(CONVENTION_AWARE_TYPE.getInternalName());
}
if (extensible) {
interfaceTypes.add(EXTENSION_AWARE_TYPE.getInternalName());
interfaceTypes.add(HAS_CONVENTION_TYPE.getInternalName());
}
if (shouldImplementWithServices) {
interfaceTypes.add(WITH_SERVICE_REGISTRY.getInternalName());
}
interfaceTypes.add(DYNAMIC_OBJECT_AWARE_TYPE.getInternalName());
interfaceTypes.add(GROOVY_OBJECT_TYPE.getInternalName());
includeNotInheritedAnnotations();
visitor.visit(V1_5, ACC_PUBLIC | ACC_SYNTHETIC, generatedType.getInternalName(), null,
superclassType.getInternalName(), interfaceTypes.toArray(EMPTY_STRINGS));
}
public void addConstructor(Constructor constructor) throws Exception {
List paramTypes = new ArrayList();
for (Class paramType : constructor.getParameterTypes()) {
paramTypes.add(Type.getType(paramType));
}
String methodDescriptor = Type.getMethodDescriptor(VOID_TYPE, paramTypes.toArray(EMPTY_TYPES));
MethodVisitor methodVisitor = visitor.visitMethod(Opcodes.ACC_PUBLIC, "", methodDescriptor, signature(constructor), EMPTY_STRINGS);
for (Annotation annotation : constructor.getDeclaredAnnotations()) {
if (annotation.annotationType().getAnnotation(Inherited.class) != null) {
continue;
}
Retention retention = annotation.annotationType().getAnnotation(Retention.class);
AnnotationVisitor annotationVisitor = methodVisitor.visitAnnotation(Type.getType(annotation.annotationType()).getDescriptor(), retention != null && retention.value() == RetentionPolicy.RUNTIME);
annotationVisitor.visitEnd();
}
methodVisitor.visitCode();
// this.super(p0 .. pn)
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
for (int i = 0; i < constructor.getParameterTypes().length; i++) {
methodVisitor.visitVarInsn(Type.getType(constructor.getParameterTypes()[i]).getOpcode(Opcodes.ILOAD), i + 1);
}
methodVisitor.visitMethodInsn(Opcodes.INVOKESPECIAL, superclassType.getInternalName(), "", methodDescriptor, false);
methodVisitor.visitInsn(Opcodes.RETURN);
methodVisitor.visitMaxs(0, 0);
methodVisitor.visitEnd();
}
public void mixInDynamicAware() throws Exception {
// GENERATE private DynamicObject dynamicObjectHelper
final String fieldSignature = ABSTRACT_DYNAMIC_OBJECT_TYPE.getDescriptor();
visitor.visitField(Opcodes.ACC_PRIVATE, DYNAMIC_OBJECT_HELPER_FIELD, fieldSignature, null, null);
// END
final Method getAsDynamicObject = DynamicObjectAware.class.getDeclaredMethod("getAsDynamicObject");
if (extensible) {
// GENERATE public Convention getConvention() { return getAsDynamicObject().getConvention(); }
addGetter(HasConvention.class.getDeclaredMethod("getConvention"), new MethodCodeBody() {
public void add(MethodVisitor visitor) throws Exception {
// GENERATE ((MixInExtensibleDynamicObject)getAsDynamicObject()).getConvention()
visitor.visitVarInsn(Opcodes.ALOAD, 0);
visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, generatedType.getInternalName(), "getAsDynamicObject", Type.getMethodDescriptor(getAsDynamicObject), false);
visitor.visitTypeInsn(Opcodes.CHECKCAST, EXTENSIBLE_DYNAMIC_OBJECT_HELPER_TYPE.getInternalName());
visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, EXTENSIBLE_DYNAMIC_OBJECT_HELPER_TYPE.getInternalName(), "getConvention", RETURN_CONVENTION, false);
}
});
// END
// GENERATE public ExtensionContainer getExtensions() { return getConvention(); }
addGetter(ExtensionAware.class.getDeclaredMethod("getExtensions"), new MethodCodeBody() {
public void add(MethodVisitor visitor) throws Exception {
// GENERATE getConvention()
visitor.visitVarInsn(Opcodes.ALOAD, 0);
visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, generatedType.getInternalName(), "getConvention", RETURN_CONVENTION, false);
}
});
}
// END
// GENERATE public DynamicObject getAsDynamicObject() {
// if (dynamicObjectHelper == null) {
// dynamicObjectHelper =
// }
// return dynamicObjectHelper;
// }
addLazyGetter(getAsDynamicObject, DYNAMIC_OBJECT_HELPER_FIELD, ABSTRACT_DYNAMIC_OBJECT_TYPE, new MethodCodeBody() {
public void add(MethodVisitor visitor) {
generateCreateDynamicObject(visitor);
}
});
// END
}
private void generateCreateDynamicObject(MethodVisitor visitor) {
if (extensible) {
// GENERATE new MixInExtensibleDynamicObject(this, getClass().getSuperClass(), super.getAsDynamicObject())
visitor.visitTypeInsn(Opcodes.NEW, EXTENSIBLE_DYNAMIC_OBJECT_HELPER_TYPE.getInternalName());
visitor.visitInsn(Opcodes.DUP);
visitor.visitVarInsn(Opcodes.ALOAD, 0);
visitor.visitVarInsn(Opcodes.ALOAD, 0);
visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, generatedType.getInternalName(), "getClass", RETURN_CLASS, false);
visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, CLASS_TYPE.getInternalName(), "getSuperclass", RETURN_CLASS, false);
if (providesOwnDynamicObject) {
// GENERATE super.getAsDynamicObject()
visitor.visitVarInsn(Opcodes.ALOAD, 0);
visitor.visitMethodInsn(Opcodes.INVOKESPECIAL, Type.getType(type).getInternalName(),
"getAsDynamicObject", RETURN_DYNAMIC_OBJECT, false);
} else {
// GENERATE null
visitor.visitInsn(Opcodes.ACONST_NULL);
}
visitor.visitMethodInsn(Opcodes.INVOKESPECIAL, EXTENSIBLE_DYNAMIC_OBJECT_HELPER_TYPE.getInternalName(), "", RETURN_VOID_FROM_OBJECT_CLASS_DYNAMIC_OBJECT, false);
// END
} else {
// GENERATE new BeanDynamicObject(this)
visitor.visitTypeInsn(Opcodes.NEW, NON_EXTENSIBLE_DYNAMIC_OBJECT_HELPER_TYPE.getInternalName());
visitor.visitInsn(Opcodes.DUP);
visitor.visitVarInsn(Opcodes.ALOAD, 0);
visitor.visitMethodInsn(Opcodes.INVOKESPECIAL, NON_EXTENSIBLE_DYNAMIC_OBJECT_HELPER_TYPE.getInternalName(), "", RETURN_VOID_FROM_OBJECT, false);
// END
}
}
public void mixInConventionAware() throws Exception {
if (!extensible) {
return;
}
// GENERATE private ConventionMapping mapping
visitor.visitField(Opcodes.ACC_PRIVATE, MAPPING_FIELD, CONVENTION_MAPPING_FIELD_DESCRIPTOR, null, null);
hasMappingField = true;
// END
// GENERATE public ConventionMapping getConventionMapping() {
// if (mapping == null) {
// mapping = new ConventionAwareHelper(this, getConvention());
// }
// return mapping;
// }
final MethodCodeBody initConventionAwareHelper = new MethodCodeBody() {
public void add(MethodVisitor visitor) throws Exception {
// GENERATE new ConventionAwareHelper(this, getConvention())
visitor.visitTypeInsn(Opcodes.NEW, CONVENTION_AWARE_HELPER_TYPE.getInternalName());
visitor.visitInsn(Opcodes.DUP);
visitor.visitVarInsn(Opcodes.ALOAD, 0);
// GENERATE getConvention()
visitor.visitVarInsn(Opcodes.ALOAD, 0);
visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, generatedType.getInternalName(), "getConvention", RETURN_CONVENTION, false);
// END
visitor.visitMethodInsn(Opcodes.INVOKESPECIAL, CONVENTION_AWARE_HELPER_TYPE.getInternalName(), "", RETURN_VOID_FROM_CONVENTION_AWARE_CONVENTION, false);
// END
}
};
addLazyGetter(IConventionAware.class.getDeclaredMethod("getConventionMapping"), MAPPING_FIELD, CONVENTION_MAPPING_TYPE, initConventionAwareHelper);
// END
}
public void mixInGroovyObject() throws Exception {
// GENERATE private MetaClass metaClass = GroovySystem.getMetaClassRegistry().getMetaClass(getClass())
visitor.visitField(Opcodes.ACC_PRIVATE, META_CLASS_FIELD, META_CLASS_TYPE_DESCRIPTOR, null, null);
// GENERATE public MetaClass getMetaClass() {
// if (metaClass == null) {
// metaClass = GroovySystem.getMetaClassRegistry().getMetaClass(getClass());
// }
// return metaClass;
// }
final MethodCodeBody initMetaClass = new MethodCodeBody() {
public void add(MethodVisitor visitor) throws Exception {
// GroovySystem.getMetaClassRegistry()
visitor.visitMethodInsn(Opcodes.INVOKESTATIC, GROOVY_SYSTEM_TYPE.getInternalName(), "getMetaClassRegistry", RETURN_META_CLASS_REGISTRY, false);
// this.getClass()
visitor.visitVarInsn(Opcodes.ALOAD, 0);
visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, OBJECT_TYPE.getInternalName(), "getClass", RETURN_CLASS, false);
// getMetaClass(..)
visitor.visitMethodInsn(Opcodes.INVOKEINTERFACE, META_CLASS_REGISTRY_TYPE.getInternalName(), "getMetaClass", RETURN_META_CLASS_FROM_CLASS, true);
}
};
addLazyGetter(GroovyObject.class.getDeclaredMethod("getMetaClass"), META_CLASS_FIELD, META_CLASS_TYPE, initMetaClass);
// END
// GENERATE public void setMetaClass(MetaClass class) { this.metaClass = class; }
addSetter(GroovyObject.class.getDeclaredMethod("setMetaClass", MetaClass.class), new MethodCodeBody() {
public void add(MethodVisitor visitor) throws Exception {
visitor.visitVarInsn(Opcodes.ALOAD, 0);
visitor.visitVarInsn(Opcodes.ALOAD, 1);
visitor.visitFieldInsn(Opcodes.PUTFIELD, generatedType.getInternalName(), META_CLASS_FIELD, META_CLASS_TYPE_DESCRIPTOR);
}
});
}
private void addSetter(Method method, MethodCodeBody body) throws Exception {
String methodDescriptor = Type.getMethodDescriptor(method);
MethodVisitor methodVisitor = visitor.visitMethod(Opcodes.ACC_PUBLIC, method.getName(), methodDescriptor, null, EMPTY_STRINGS);
methodVisitor.visitCode();
body.add(methodVisitor);
methodVisitor.visitInsn(Opcodes.RETURN);
methodVisitor.visitMaxs(0, 0);
methodVisitor.visitEnd();
}
@Override
public void addPropertySetters(PropertyMetaData property, Method getter) throws Exception {
// GENERATE public void set(Object p) {
// ((PropertyInternal)()).setFromAnyValue(p);
// }
MethodVisitor methodVisitor = visitor.visitMethod(Opcodes.ACC_PUBLIC, "set" + StringUtils.capitalize(property.getName()), RETURN_VOID_FROM_OBJECT, null, EMPTY_STRINGS);
methodVisitor.visitCode();
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, generatedType.getInternalName(), getter.getName(), Type.getMethodDescriptor(getter), false);
methodVisitor.visitTypeInsn(Opcodes.CHECKCAST, PROPERTY_INTERNAL_TYPE.getInternalName());
methodVisitor.visitVarInsn(Opcodes.ALOAD, 1);
methodVisitor.visitMethodInsn(Opcodes.INVOKEINTERFACE, PROPERTY_INTERNAL_TYPE.getInternalName(), "setFromAnyValue", ClassBuilderImpl.RETURN_VOID_FROM_OBJECT, true);
methodVisitor.visitInsn(Opcodes.RETURN);
methodVisitor.visitMaxs(0, 0);
methodVisitor.visitEnd();
}
/**
* Adds a getter that returns the value of the given field, initializing it if null.
*/
private void addLazyGetter(Method method, final String fieldName, final Type fieldType, final MethodCodeBody initializer) throws Exception {
String methodDescriptor = Type.getMethodDescriptor(method);
String methodName = method.getName();
addGetter(methodName, methodDescriptor, new MethodCodeBody() {
@Override
public void add(MethodVisitor visitor) throws Exception {
visitor.visitVarInsn(Opcodes.ALOAD, 0);
visitor.visitFieldInsn(Opcodes.GETFIELD, generatedType.getInternalName(), fieldName, fieldType.getDescriptor());
visitor.visitVarInsn(Opcodes.ASTORE, 1);
visitor.visitVarInsn(Opcodes.ALOAD, 1);
Label returnValue = new Label();
visitor.visitJumpInsn(Opcodes.IFNONNULL, returnValue);
initializer.add(visitor);
visitor.visitVarInsn(Opcodes.ASTORE, 1);
visitor.visitVarInsn(Opcodes.ALOAD, 0);
visitor.visitVarInsn(Opcodes.ALOAD, 1);
visitor.visitFieldInsn(Opcodes.PUTFIELD, generatedType.getInternalName(), fieldName, fieldType.getDescriptor());
visitor.visitLabel(returnValue);
visitor.visitVarInsn(Opcodes.ALOAD, 1);
}
});
}
private void addGetter(Method method, MethodCodeBody body) throws Exception {
String methodDescriptor = Type.getMethodDescriptor(method);
String methodName = method.getName();
addGetter(methodName, methodDescriptor, body);
}
private void addGetter(String methodName, String methodDescriptor, MethodCodeBody body) throws Exception {
MethodVisitor methodVisitor = visitor.visitMethod(Opcodes.ACC_PUBLIC, methodName, methodDescriptor, null, EMPTY_STRINGS);
methodVisitor.visitCode();
body.add(methodVisitor);
methodVisitor.visitInsn(Opcodes.ARETURN);
methodVisitor.visitMaxs(0, 0);
methodVisitor.visitEnd();
}
public void addDynamicMethods() throws Exception {
// GENERATE public Object getProperty(String name) { return getAsDynamicObject().getProperty(name); }
addGetter(GroovyObject.class.getDeclaredMethod("getProperty", String.class), new MethodCodeBody() {
public void add(MethodVisitor methodVisitor) throws Exception {
// GENERATE getAsDynamicObject().getProperty(name);
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
String getAsDynamicObjectDesc = Type.getMethodDescriptor(DynamicObjectAware.class.getDeclaredMethod(
"getAsDynamicObject"));
methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, generatedType.getInternalName(), "getAsDynamicObject", getAsDynamicObjectDesc, false);
methodVisitor.visitVarInsn(Opcodes.ALOAD, 1);
String getPropertyDesc = Type.getMethodDescriptor(DynamicObject.class.getDeclaredMethod(
"getProperty", String.class));
methodVisitor.visitMethodInsn(Opcodes.INVOKEINTERFACE, DYNAMIC_OBJECT_TYPE.getInternalName(), "getProperty", getPropertyDesc, true);
// END
}
});
// GENERATE public boolean hasProperty(String name) { return getAsDynamicObject().hasProperty(name) }
MethodVisitor methodVisitor = visitor.visitMethod(Opcodes.ACC_PUBLIC, "hasProperty", RETURN_BOOLEAN_FROM_STRING, null, EMPTY_STRINGS);
methodVisitor.visitCode();
// GENERATE getAsDynamicObject().hasProperty(name);
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
String getAsDynamicObjectDesc = Type.getMethodDescriptor(DynamicObjectAware.class.getDeclaredMethod(
"getAsDynamicObject"));
methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, generatedType.getInternalName(), "getAsDynamicObject", getAsDynamicObjectDesc, false);
methodVisitor.visitVarInsn(Opcodes.ALOAD, 1);
String getPropertyDesc = Type.getMethodDescriptor(PropertyAccess.class.getDeclaredMethod("hasProperty", String.class));
methodVisitor.visitMethodInsn(Opcodes.INVOKEINTERFACE, DYNAMIC_OBJECT_TYPE.getInternalName(), "hasProperty", getPropertyDesc, true);
// END
methodVisitor.visitInsn(Opcodes.IRETURN);
methodVisitor.visitMaxs(0, 0);
methodVisitor.visitEnd();
// GENERATE public void setProperty(String name, Object value) { getAsDynamicObject().setProperty(name, value); }
addSetter(GroovyObject.class.getDeclaredMethod("setProperty", String.class, Object.class),
new MethodCodeBody() {
public void add(MethodVisitor methodVisitor) throws Exception {
// GENERATE getAsDynamicObject().setProperty(name, value)
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
String getAsDynamicObjectDesc = Type.getMethodDescriptor(
DynamicObjectAware.class.getDeclaredMethod("getAsDynamicObject"));
methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, generatedType.getInternalName(), "getAsDynamicObject", getAsDynamicObjectDesc, false);
methodVisitor.visitVarInsn(Opcodes.ALOAD, 1);
methodVisitor.visitVarInsn(Opcodes.ALOAD, 2);
String setPropertyDesc = Type.getMethodDescriptor(DynamicObject.class.getDeclaredMethod(
"setProperty", String.class, Object.class));
methodVisitor.visitMethodInsn(Opcodes.INVOKEINTERFACE, DYNAMIC_OBJECT_TYPE.getInternalName(), "setProperty", setPropertyDesc, true);
// END
}
});
// GENERATE public Object invokeMethod(String name, Object params) { return getAsDynamicObject().invokeMethod(name, (Object[])params); }
addGetter(GroovyObject.class.getDeclaredMethod("invokeMethod", String.class, Object.class),
new MethodCodeBody() {
public void add(MethodVisitor methodVisitor) throws Exception {
String invokeMethodDesc = Type.getMethodDescriptor(OBJECT_TYPE, STRING_TYPE, OBJECT_ARRAY_TYPE);
// GENERATE getAsDynamicObject().invokeMethod(name, (args instanceof Object[]) ? args : new Object[] { args })
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
String getAsDynamicObjectDesc = Type.getMethodDescriptor(
DynamicObjectAware.class.getDeclaredMethod("getAsDynamicObject"));
methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, generatedType.getInternalName(), "getAsDynamicObject", getAsDynamicObjectDesc, false);
methodVisitor.visitVarInsn(Opcodes.ALOAD, 1);
// GENERATE (args instanceof Object[]) ? args : new Object[] { args }
methodVisitor.visitVarInsn(Opcodes.ALOAD, 2);
methodVisitor.visitTypeInsn(Opcodes.INSTANCEOF, OBJECT_ARRAY_TYPE.getDescriptor());
Label end = new Label();
Label notArray = new Label();
methodVisitor.visitJumpInsn(Opcodes.IFEQ, notArray);
// Generate args
methodVisitor.visitVarInsn(Opcodes.ALOAD, 2);
methodVisitor.visitTypeInsn(Opcodes.CHECKCAST, OBJECT_ARRAY_TYPE.getDescriptor());
methodVisitor.visitJumpInsn(Opcodes.GOTO, end);
// Generate new Object[] { args }
methodVisitor.visitLabel(notArray);
methodVisitor.visitInsn(Opcodes.ICONST_1);
methodVisitor.visitTypeInsn(Opcodes.ANEWARRAY, OBJECT_TYPE.getInternalName());
methodVisitor.visitInsn(Opcodes.DUP);
methodVisitor.visitInsn(Opcodes.ICONST_0);
methodVisitor.visitVarInsn(Opcodes.ALOAD, 2);
methodVisitor.visitInsn(Opcodes.AASTORE);
methodVisitor.visitLabel(end);
methodVisitor.visitMethodInsn(Opcodes.INVOKEINTERFACE, DYNAMIC_OBJECT_TYPE.getInternalName(), "invokeMethod", invokeMethodDesc, true);
}
});
}
public void addInjectorProperty(PropertyMetaData property) {
// GENERATE private ;
String flagName = propFieldName(property);
visitor.visitField(Opcodes.ACC_PRIVATE, flagName, Type.getDescriptor(property.getType()), null, null);
}
private void generateServicesField() {
visitor.visitField(ACC_PRIVATE | ACC_SYNTHETIC, SERVICES_FIELD, SERVICE_REGISTRY_TYPE.getDescriptor(), null, null);
}
private void generateGetServices() {
MethodVisitor mv = visitor.visitMethod(ACC_PUBLIC | ACC_SYNTHETIC, "getServices", SERVICE_REGISTRY_METHOD_DESCRIPTOR, null, null);
mv.visitCode();
mv.visitVarInsn(Opcodes.ALOAD, 0);
mv.visitFieldInsn(GETFIELD, generatedType.getInternalName(), SERVICES_FIELD, SERVICE_REGISTRY_TYPE.getDescriptor());
mv.visitInsn(ARETURN);
mv.visitMaxs(0, 0);
mv.visitEnd();
}
private void generateSetServices() {
MethodVisitor mv = visitor.visitMethod(ACC_PUBLIC | ACC_SYNTHETIC, "setServices", "(" + SERVICE_REGISTRY_TYPE.getDescriptor() + ")V", null, null);
mv.visitCode();
mv.visitVarInsn(Opcodes.ALOAD, 0);
mv.visitVarInsn(Opcodes.ALOAD, 1);
mv.visitFieldInsn(PUTFIELD, generatedType.getInternalName(), SERVICES_FIELD, SERVICE_REGISTRY_TYPE.getDescriptor());
mv.visitInsn(RETURN);
mv.visitMaxs(0, 0);
mv.visitEnd();
}
public void applyServiceInjectionToGetter(PropertyMetaData property, Method getter) throws Exception {
// GENERATE public () { if ( == null) { = getServices().get(getClass().getDeclaredMethod().getGenericReturnType()); } return }
String getterName = getter.getName();
Type returnType = Type.getType(getter.getReturnType());
String methodDescriptor = Type.getMethodDescriptor(returnType);
Type serviceType = Type.getType(property.getType());
String propFieldName = propFieldName(property);
MethodVisitor methodVisitor = visitor.visitMethod(Opcodes.ACC_PUBLIC, getterName, methodDescriptor, signature(getter), EMPTY_STRINGS);
methodVisitor.visitCode();
// if (this. == null) { ... }
// this.field
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
methodVisitor.visitFieldInsn(Opcodes.GETFIELD, generatedType.getInternalName(), propFieldName, serviceType.getDescriptor());
Label alreadyLoaded = new Label();
methodVisitor.visitJumpInsn(Opcodes.IFNONNULL, alreadyLoaded);
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
// this.getServices()
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, generatedType.getInternalName(), "getServices", SERVICE_REGISTRY_METHOD_DESCRIPTOR, false);
java.lang.reflect.Type genericReturnType = getter.getGenericReturnType();
if (genericReturnType instanceof Class) {
// if the return type doesn't use generics, then it's faster to just rely on the type name directly
methodVisitor.visitLdcInsn(Type.getType((Class) genericReturnType));
} else {
// load the static type descriptor from class constants
String constantFieldName = getConstantNameForGenericReturnType(genericReturnType, getterName);
methodVisitor.visitFieldInsn(GETSTATIC, generatedType.getInternalName(), constantFieldName, JAVA_REFLECT_TYPE_DESCRIPTOR);
}
// get()
methodVisitor.visitMethodInsn(Opcodes.INVOKEINTERFACE, SERVICE_REGISTRY_TYPE.getInternalName(), "get", GET_METHOD_DESCRIPTOR, true);
// this.field = ()
methodVisitor.visitTypeInsn(Opcodes.CHECKCAST, serviceType.getInternalName());
methodVisitor.visitFieldInsn(Opcodes.PUTFIELD, generatedType.getInternalName(), propFieldName, serviceType.getDescriptor());
// this.field
methodVisitor.visitLabel(alreadyLoaded);
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
methodVisitor.visitFieldInsn(Opcodes.GETFIELD, generatedType.getInternalName(), propFieldName, serviceType.getDescriptor());
// return
methodVisitor.visitInsn(returnType.getOpcode(Opcodes.IRETURN));
methodVisitor.visitMaxs(0, 0);
methodVisitor.visitEnd();
}
private String getConstantNameForGenericReturnType(java.lang.reflect.Type genericReturnType, String getterName) {
ReturnTypeEntry entry = genericReturnTypeConstantsIndex.get(genericReturnType);
if (entry == null) {
String fieldName = "_GENERIC_RETURN_TYPE_" + genericReturnTypeConstantsIndex.size();
entry = new ReturnTypeEntry(fieldName, getterName);
genericReturnTypeConstantsIndex.put(genericReturnType, entry);
}
return entry.fieldName;
}
public void applyServiceInjectionToSetter(PropertyMetaData property, Method setter) throws Exception {
// GENERATE public void ( value) { == value }
String methodDescriptor = Type.getMethodDescriptor(setter);
Type serviceType = Type.getType(property.getType());
String propFieldName = propFieldName(property);
MethodVisitor methodVisitor = visitor.visitMethod(Opcodes.ACC_PUBLIC, setter.getName(), methodDescriptor, signature(setter), EMPTY_STRINGS);
methodVisitor.visitCode();
// this.field = value
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
methodVisitor.visitVarInsn(Opcodes.ALOAD, 1);
methodVisitor.visitFieldInsn(Opcodes.PUTFIELD, generatedType.getInternalName(), propFieldName, serviceType.getDescriptor());
// return
methodVisitor.visitInsn(Opcodes.RETURN);
methodVisitor.visitMaxs(0, 0);
methodVisitor.visitEnd();
}
public void addConventionProperty(PropertyMetaData property) throws Exception {
// GENERATE private boolean ;
String flagName = propFieldName(property);
visitor.visitField(Opcodes.ACC_PRIVATE, flagName, Type.BOOLEAN_TYPE.getDescriptor(), null, null);
}
private String propFieldName(PropertyMetaData property) {
return "__" + property.getName() + "__";
}
public void applyConventionMappingToGetter(PropertyMetaData property, Method getter) throws Exception {
// GENERATE public () { return ()getConventionMapping().getConventionValue(super.(), '', ____); }
String flagName = propFieldName(property);
String getterName = getter.getName();
Type returnType = Type.getType(getter.getReturnType());
String methodDescriptor = Type.getMethodDescriptor(returnType);
MethodVisitor methodVisitor = visitor.visitMethod(Opcodes.ACC_PUBLIC, getterName, methodDescriptor, null, EMPTY_STRINGS);
methodVisitor.visitCode();
if (hasMappingField) {
// if (conventionMapping == null) { return super.; }
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
methodVisitor.visitFieldInsn(Opcodes.GETFIELD, generatedType.getInternalName(), MAPPING_FIELD, CONVENTION_MAPPING_FIELD_DESCRIPTOR);
Label useConvention = new Label();
methodVisitor.visitJumpInsn(Opcodes.IFNONNULL, useConvention);
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
methodVisitor.visitMethodInsn(Opcodes.INVOKESPECIAL, superclassType.getInternalName(), getterName, methodDescriptor, false);
methodVisitor.visitInsn(returnType.getOpcode(Opcodes.IRETURN));
methodVisitor.visitLabel(useConvention);
}
// else { return ()getConventionMapping().getConventionValue(super.(), '', ____); }
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
methodVisitor.visitMethodInsn(Opcodes.INVOKEINTERFACE, CONVENTION_AWARE_TYPE.getInternalName(), "getConventionMapping", Type.getMethodDescriptor(CONVENTION_MAPPING_TYPE), true);
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
methodVisitor.visitMethodInsn(Opcodes.INVOKESPECIAL, superclassType.getInternalName(), getterName, methodDescriptor, false);
Type boxedType = null;
if (getter.getReturnType().isPrimitive()) {
// Box value
boxedType = Type.getType(JavaReflectionUtil.getWrapperTypeForPrimitiveType(getter.getReturnType()));
String valueOfMethodDescriptor = Type.getMethodDescriptor(boxedType, returnType);
methodVisitor.visitMethodInsn(Opcodes.INVOKESTATIC, boxedType.getInternalName(), "valueOf", valueOfMethodDescriptor, false);
}
methodVisitor.visitLdcInsn(property.getName());
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
methodVisitor.visitFieldInsn(Opcodes.GETFIELD, generatedType.getInternalName(), flagName,
Type.BOOLEAN_TYPE.getDescriptor());
String getConventionValueDesc = Type.getMethodDescriptor(ConventionMapping.class.getMethod(
"getConventionValue", Object.class, String.class, Boolean.TYPE));
methodVisitor.visitMethodInsn(Opcodes.INVOKEINTERFACE, CONVENTION_MAPPING_TYPE.getInternalName(), "getConventionValue", getConventionValueDesc, true);
if (getter.getReturnType().isPrimitive()) {
// Unbox value
methodVisitor.visitTypeInsn(Opcodes.CHECKCAST, boxedType.getInternalName());
String valueMethodDescriptor = Type.getMethodDescriptor(returnType);
methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, boxedType.getInternalName(), getter.getReturnType().getName() + "Value", valueMethodDescriptor, false);
} else {
// Cast to return type
methodVisitor.visitTypeInsn(Opcodes.CHECKCAST,
getter.getReturnType().isArray() ? "[" + returnType.getElementType().getDescriptor()
: returnType.getInternalName());
}
methodVisitor.visitInsn(returnType.getOpcode(Opcodes.IRETURN));
methodVisitor.visitMaxs(0, 0);
methodVisitor.visitEnd();
}
public void applyConventionMappingToSetter(PropertyMetaData property, Method setter) throws Exception {
// GENERATE public ( v) { v = super.(v); ____ = true; return v; }
Type paramType = Type.getType(setter.getParameterTypes()[0]);
Type returnType = Type.getType(setter.getReturnType());
String setterDescriptor = Type.getMethodDescriptor(returnType, paramType);
MethodVisitor methodVisitor = visitor.visitMethod(Opcodes.ACC_PUBLIC, setter.getName(), setterDescriptor, null, EMPTY_STRINGS);
methodVisitor.visitCode();
// GENERATE super.(v)
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
methodVisitor.visitVarInsn(paramType.getOpcode(Opcodes.ILOAD), 1);
methodVisitor.visitMethodInsn(Opcodes.INVOKESPECIAL, superclassType.getInternalName(), setter.getName(), setterDescriptor, false);
// END
// GENERATE ____ = true
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
methodVisitor.visitLdcInsn(true);
methodVisitor.visitFieldInsn(Opcodes.PUTFIELD, generatedType.getInternalName(), propFieldName(property), Type.BOOLEAN_TYPE.getDescriptor());
// END
methodVisitor.visitInsn(returnType.getOpcode(Opcodes.IRETURN));
methodVisitor.visitMaxs(0, 0);
methodVisitor.visitEnd();
}
public void addSetMethod(PropertyMetaData property, Method setter) throws Exception {
Type paramType = Type.getType(setter.getParameterTypes()[0]);
Type returnType = Type.getType(setter.getReturnType());
String setterDescriptor = Type.getMethodDescriptor(returnType, paramType);
// GENERATE public void ( v) { (v) }
String setMethodDescriptor = Type.getMethodDescriptor(Type.VOID_TYPE, paramType);
MethodVisitor methodVisitor = visitor.visitMethod(Opcodes.ACC_PUBLIC, property.getName(), setMethodDescriptor, null, EMPTY_STRINGS);
methodVisitor.visitCode();
// GENERATE (v)
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
methodVisitor.visitVarInsn(paramType.getOpcode(Opcodes.ILOAD), 1);
methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, generatedType.getInternalName(), setter.getName(), setterDescriptor, false);
// END
methodVisitor.visitInsn(Opcodes.RETURN);
methodVisitor.visitMaxs(0, 0);
methodVisitor.visitEnd();
}
public void applyConventionMappingToSetMethod(PropertyMetaData property, Method method) throws Exception {
Type paramType = Type.getType(method.getParameterTypes()[0]);
Type returnType = Type.getType(method.getReturnType());
String methodDescriptor = Type.getMethodDescriptor(returnType, paramType);
// GENERATE public ( v) { val = super.(v); ____ = true; return val; }
MethodVisitor methodVisitor = visitor.visitMethod(Opcodes.ACC_PUBLIC, method.getName(), methodDescriptor, null, EMPTY_STRINGS);
methodVisitor.visitCode();
// GENERATE super.(v)
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
methodVisitor.visitVarInsn(paramType.getOpcode(Opcodes.ILOAD), 1);
methodVisitor.visitMethodInsn(Opcodes.INVOKESPECIAL, superclassType.getInternalName(), method.getName(), methodDescriptor, false);
// GENERATE ____ = true
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
methodVisitor.visitLdcInsn(true);
methodVisitor.visitFieldInsn(Opcodes.PUTFIELD, generatedType.getInternalName(), propFieldName(property), Type.BOOLEAN_TYPE.getDescriptor());
// END
methodVisitor.visitInsn(returnType.getOpcode(Opcodes.IRETURN));
methodVisitor.visitMaxs(0, 0);
methodVisitor.visitEnd();
}
public void addActionMethod(Method method) throws Exception {
Type returnType = Type.getType(method.getReturnType());
Type[] originalParameterTypes = CollectionUtils.collectArray(method.getParameterTypes(), Type.class, new Transformer() {
public Type transform(Class clazz) {
return Type.getType(clazz);
}
});
int numParams = originalParameterTypes.length;
Type[] closurisedParameterTypes = new Type[numParams];
System.arraycopy(originalParameterTypes, 0, closurisedParameterTypes, 0, numParams);
closurisedParameterTypes[numParams - 1] = CLOSURE_TYPE;
String methodDescriptor = Type.getMethodDescriptor(returnType, closurisedParameterTypes);
// GENERATE public (Closure v) { return (…, ConfigureUtil.configureUsing(v)); }
MethodVisitor methodVisitor = visitor.visitMethod(Opcodes.ACC_PUBLIC, method.getName(), methodDescriptor, null, EMPTY_STRINGS);
methodVisitor.visitCode();
// GENERATE (…, ConfigureUtil.configureUsing(v));
methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
for (int stackVar = 1; stackVar < numParams; ++stackVar) {
methodVisitor.visitVarInsn(closurisedParameterTypes[stackVar - 1].getOpcode(Opcodes.ILOAD), stackVar);
}
// GENERATE ConfigureUtil.configureUsing(v);
methodVisitor.visitVarInsn(Opcodes.ALOAD, numParams);
methodDescriptor = Type.getMethodDescriptor(ACTION_TYPE, CLOSURE_TYPE);
methodVisitor.visitMethodInsn(Opcodes.INVOKESTATIC, CONFIGURE_UTIL_TYPE.getInternalName(), "configureUsing", methodDescriptor, false);
methodDescriptor = Type.getMethodDescriptor(Type.getType(method.getReturnType()), originalParameterTypes);
methodVisitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, generatedType.getInternalName(), method.getName(), methodDescriptor, false);
methodVisitor.visitInsn(returnType.getOpcode(Opcodes.IRETURN));
methodVisitor.visitMaxs(0, 0);
methodVisitor.visitEnd();
}
@Override
public void generateServiceRegistrySupportMethods() throws Exception {
generateServicesField();
generateGetServices();
generateSetServices();
}
private void includeNotInheritedAnnotations() {
for (Annotation annotation : type.getDeclaredAnnotations()) {
if (annotation.annotationType().getAnnotation(Inherited.class) != null) {
continue;
}
Retention retention = annotation.annotationType().getAnnotation(Retention.class);
boolean visible = retention != null && retention.value() == RetentionPolicy.RUNTIME;
AnnotationVisitor annotationVisitor = visitor.visitAnnotation(Type.getType(annotation.annotationType()).getDescriptor(), visible);
visitAnnotationValues(annotation, annotationVisitor);
annotationVisitor.visitEnd();
}
}
private void visitAnnotationValues(Annotation annotation, AnnotationVisitor annotationVisitor) {
for (Method method : annotation.annotationType().getDeclaredMethods()) {
String name = method.getName();
Class returnType = method.getReturnType();
if (returnType.isEnum()) {
annotationVisitor.visitEnum(name, Type.getType(returnType).getDescriptor(), getAnnotationParameterValue(annotation, method).toString());
} else if (returnType.isArray() && !PRIMITIVE_TYPES.contains(returnType.getComponentType())) {
AnnotationVisitor arrayVisitor = annotationVisitor.visitArray(name);
Object[] elements = (Object[]) getAnnotationParameterValue(annotation, method);
visitArrayElements(arrayVisitor, returnType.getComponentType(), elements);
arrayVisitor.visitEnd();
} else if (returnType.equals(Class.class)) {
Class clazz = (Class) getAnnotationParameterValue(annotation, method);
annotationVisitor.visit(name, Type.getType(clazz));
} else if (returnType.isAnnotation()) {
Annotation nestedAnnotation = (Annotation) getAnnotationParameterValue(annotation, method);
AnnotationVisitor nestedAnnotationVisitor = annotationVisitor.visitAnnotation(name, Type.getType(returnType).getDescriptor());
visitAnnotationValues(nestedAnnotation, nestedAnnotationVisitor);
nestedAnnotationVisitor.visitEnd();
} else {
annotationVisitor.visit(name, getAnnotationParameterValue(annotation, method));
}
}
}
private void visitArrayElements(AnnotationVisitor arrayVisitor, Class arrayElementType, Object[] arrayElements) {
if (arrayElementType.isEnum()) {
String enumDescriptor = Type.getType(arrayElementType).getDescriptor();
for (Object value : arrayElements) {
arrayVisitor.visitEnum(null, enumDescriptor, value.toString());
}
} else if (arrayElementType.equals(Class.class)) {
for (Object value : arrayElements) {
Class clazz = (Class) value;
arrayVisitor.visit(null, Type.getType(clazz));
}
} else if (arrayElementType.isAnnotation()) {
for (Object annotation : arrayElements) {
AnnotationVisitor nestedAnnotationVisitor = arrayVisitor.visitAnnotation(null, Type.getType(arrayElementType).getDescriptor());
visitAnnotationValues((Annotation) annotation, nestedAnnotationVisitor);
nestedAnnotationVisitor.visitEnd();
}
} else {
for (Object value : arrayElements) {
arrayVisitor.visit(null, value);
}
}
}
private Object getAnnotationParameterValue(Annotation annotation, Method method) {
try {
return method.invoke(annotation);
} catch (IllegalAccessException e) {
throw UncheckedException.throwAsUncheckedException(e);
} catch (InvocationTargetException e) {
throw UncheckedException.throwAsUncheckedException(e);
}
}
public Class generate() {
writeGenericReturnTypeFields();
visitor.visitEnd();
return classGenerator.define().asSubclass(type);
}
private void writeGenericReturnTypeFields() {
if (!genericReturnTypeConstantsIndex.isEmpty()) {
MethodVisitor mv = visitor.visitMethod(ACC_STATIC, "", "()V", null, null);
mv.visitCode();
for (Map.Entry entry : genericReturnTypeConstantsIndex.entrySet()) {
ReturnTypeEntry returnType = entry.getValue();
visitor.visitField(PV_FINAL_STATIC, returnType.fieldName, JAVA_REFLECT_TYPE_DESCRIPTOR, null, null);
writeGenericReturnTypeFieldInitializer(mv, returnType);
}
mv.visitInsn(RETURN);
mv.visitMaxs(1, 1);
mv.visitEnd();
}
}
private void writeGenericReturnTypeFieldInitializer(MethodVisitor mv, ReturnTypeEntry returnType) {
mv.visitLdcInsn(generatedType);
// .getDeclaredMethod()
mv.visitLdcInsn(returnType.getterName);
mv.visitInsn(Opcodes.ICONST_0);
mv.visitTypeInsn(Opcodes.ANEWARRAY, CLASS_TYPE.getInternalName());
mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, CLASS_TYPE.getInternalName(), "getDeclaredMethod", GET_DECLARED_METHOD_DESCRIPTOR, false);
// .getGenericReturnType()
mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, METHOD_TYPE.getInternalName(), "getGenericReturnType", Type.getMethodDescriptor(JAVA_LANG_REFLECT_TYPE), false);
mv.visitFieldInsn(PUTSTATIC, generatedType.getInternalName(), returnType.fieldName, JAVA_REFLECT_TYPE_DESCRIPTOR);
}
private final static class ReturnTypeEntry {
private final String fieldName;
private final String getterName;
private ReturnTypeEntry(String fieldName, String getterName) {
this.fieldName = fieldName;
this.getterName = getterName;
}
}
}
private interface MethodCodeBody {
void add(MethodVisitor visitor) throws Exception;
}
public static class MixInExtensibleDynamicObject extends ExtensibleDynamicObject {
public MixInExtensibleDynamicObject(Object decoratedObject, Class publicType, @Nullable DynamicObject selfProvidedDynamicObject) {
super(decoratedObject, wrap(decoratedObject, publicType, selfProvidedDynamicObject), ThreadGlobalInstantiator.getOrCreate());
}
private static AbstractDynamicObject wrap(Object delegateObject, Class publicType, DynamicObject dynamicObject) {
if (dynamicObject != null) {
return (AbstractDynamicObject) dynamicObject;
}
return new BeanDynamicObject(delegateObject, publicType);
}
}
}
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