Java tutorial
/* * The MIT License (MIT) * * Copyright (c) 2016. Diorite (by Bartomiej Mazur (aka GotoFinal)) * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package org.diorite.inject.asm; import javax.annotation.Nullable; import java.io.Serializable; import java.lang.annotation.Annotation; import java.lang.instrument.ClassFileTransformer; import java.util.Iterator; import org.objectweb.asm.AnnotationVisitor; import org.objectweb.asm.ClassVisitor; import org.objectweb.asm.ClassWriter; import org.objectweb.asm.FieldVisitor; import org.objectweb.asm.Handle; import org.objectweb.asm.Label; import org.objectweb.asm.MethodVisitor; import org.objectweb.asm.Opcodes; import org.objectweb.asm.Type; import org.diorite.inject.Qualifier; import org.diorite.inject.Qualifiers; import org.diorite.inject.Scope; import org.diorite.inject.utils.Constants; import org.diorite.unsafe.ByteBuddyUtils; import net.bytebuddy.ByteBuddy; import net.bytebuddy.ClassFileVersion; import net.bytebuddy.asm.AsmVisitorWrapper; import net.bytebuddy.description.method.MethodDescription.InDefinedShape; import net.bytebuddy.description.method.MethodList; import net.bytebuddy.description.type.TypeDescription; import net.bytebuddy.description.type.TypeDescription.ForLoadedType; import net.bytebuddy.dynamic.DynamicType.Loaded; import net.bytebuddy.dynamic.DynamicType.Unloaded; import net.bytebuddy.dynamic.loading.ClassLoadingStrategy.Default; import net.bytebuddy.dynamic.scaffold.subclass.ConstructorStrategy; import net.bytebuddy.implementation.Implementation.Context; import net.bytebuddy.pool.TypePool; public class QualifierAndScopeImplementationGenerator implements ClassFileTransformer, Opcodes { public static final String GENERATED_PREFIX = "org.diorite.di.generated.annotations"; public static final Object[] STACK = {}; public static final int HASHCODE_MULTI = 127; // // public QualifierAndScopeImplementationGenerator(DIController controller, Instrumentation instrumentation) // { // super(controller, instrumentation); // } // // @Override // public byte[] transform(DIController controller, Instrumentation instr, Module module, ClassLoader loader, String className, Class<?> clazz, // ProtectionDomain pd, byte[] bytes) throws IllegalClassFormatException // { // if (clazz == null) // { // return null; // } // ClassReader classReader = new ClassReader(bytes); // if ((classReader.getInterfaces().length != 1) || ! classReader.getInterfaces()[0].equals("java/lang/annotation/Annotation")) // { // return null; // } // try // { // TypePool pool = TypePool.Default.ofClassPath(); // TypeDescription description = pool.describe(className.replace('/', '.')).resolve(); // AnnotationList annotations = description.getInheritedAnnotations(); // if (! description.isAnnotation() || ! (annotations.isAnnotationPresent(Qualifier.class) || annotations.isAnnotationPresent(Scope.class))) // { // return null; // } // String name = GENERATED_PREFIX + "." + description.getName(); // Unloaded<Object> make = new ByteBuddy().subclass(Object.class, ConstructorStrategy.Default.NO_CONSTRUCTORS) // .implement(pool.describe(Serializable.class.getName()).resolve(), description).name(name) // .visit(new AnnotationImplementationVisitor(description)).make(); // Loaded<Object> load = make.load(ClassLoader.getSystemClassLoader(), Default.INJECTION); // return null; // } // catch (Throwable e) // { // e.printStackTrace(); // return null; // } // } @SuppressWarnings("unchecked") @Nullable public static <T extends Annotation> Class<? extends T> transform(Class<T> clazz) { if (!clazz.isAnnotation() || !(clazz.isAnnotationPresent(Qualifier.class) || clazz.isAnnotationPresent(Scope.class))) { return null; } try { String name = GENERATED_PREFIX + "." + clazz.getName(); Unloaded<Object> make = new ByteBuddy(ClassFileVersion.JAVA_V9) .subclass(Object.class, ConstructorStrategy.Default.NO_CONSTRUCTORS) .implement(Serializable.class, clazz).name(name) .visit(new AnnotationImplementationVisitor(new ForLoadedType(clazz))).make(); Loaded<Object> load = make.load(ClassLoader.getSystemClassLoader(), Default.INJECTION); return (Class<? extends T>) load.getLoaded(); } catch (Throwable e) { throw new RuntimeException(e); } } private static final class AnnotationImplementationVisitor implements AsmVisitorWrapper { private final TypeDescription clazz; private AnnotationImplementationVisitor(TypeDescription clazz) { this.clazz = clazz; } @Override public int mergeWriter(int flags) { return flags | ClassWriter.COMPUTE_MAXS; } @Override public int mergeReader(int flags) { return flags; } @Override public ClassVisitor wrap(TypeDescription typeDescription, ClassVisitor cv, Context context, TypePool typePool, int i, int i1) { cv.visit(ClassFileVersion.JAVA_V9.getMinorMajorVersion(), typeDescription.getModifiers(), typeDescription.getInternalName(), null, typeDescription.getSuperClass().asErasure().getInternalName(), typeDescription.getInterfaces().asErasures().toInternalNames()); TypeDescription clazz = this.clazz; String internalName = clazz.getInternalName(); String descriptor = clazz.getDescriptor(); MethodList<InDefinedShape> declaredMethods = clazz.getDeclaredMethods(); int methodsSize = declaredMethods.size(); String implName = GENERATED_PREFIX + "." + clazz.getName(); String internalImplName = GENERATED_PREFIX.replace('.', '/') + "/" + internalName; String descriptorImplName = "L" + GENERATED_PREFIX.replace('.', '/') + "/" + internalName + ";"; FieldVisitor fv; MethodVisitor mv; AnnotationVisitor av0; { fv = cv.visitField(ACC_PRIVATE + ACC_FINAL + ACC_STATIC, "serialVersionUID", "J", null, 0L); fv.visitEnd(); } if (methodsSize == 0) { { fv = cv.visitField(ACC_PRIVATE + ACC_FINAL, "$_hashcode", "I", null, null); fv.visitEnd(); } { fv = cv.visitField(ACC_PRIVATE + ACC_FINAL, "$_toString", "Ljava/lang/String;", null, null); fv.visitEnd(); } { mv = cv.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); Label l1 = new Label(); mv.visitLabel(l1); mv.visitVarInsn(ALOAD, 0); mv.visitInsn(ICONST_0); mv.visitFieldInsn(PUTFIELD, internalImplName, "$_hashcode", "I"); Label l2 = new Label(); mv.visitLabel(l2); mv.visitVarInsn(ALOAD, 0); mv.visitTypeInsn(NEW, "java/lang/StringBuilder"); mv.visitInsn(DUP); //noinspection MagicNumber mv.visitIntInsn(BIPUSH, 50); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(I)V", false); mv.visitIntInsn(BIPUSH, '@'); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(C)Ljava/lang/StringBuilder;", false); mv.visitLdcInsn(Type.getType(descriptor)); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getName", "()Ljava/lang/String;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false); mv.visitLdcInsn("()"); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false); mv.visitFieldInsn(PUTFIELD, internalImplName, "$_toString", "Ljava/lang/String;"); Label l3 = new Label(); mv.visitLabel(l3); mv.visitInsn(RETURN); Label l4 = new Label(); mv.visitLabel(l4); mv.visitLocalVariable("this", descriptorImplName, null, l0, l4, 0); mv.visitMaxs(4, 1); mv.visitEnd(); } { mv = cv.visitMethod(ACC_PUBLIC, "hashCode", "()I", null, null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, internalImplName, "$_hashcode", "I"); mv.visitInsn(IRETURN); Label l1 = new Label(); mv.visitLabel(l1); mv.visitLocalVariable("this", descriptorImplName, null, l0, l1, 0); mv.visitMaxs(1, 1); mv.visitEnd(); } { mv = cv.visitMethod(ACC_PUBLIC, "equals", "(Ljava/lang/Object;)Z", null, null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitVarInsn(ALOAD, 1); mv.visitTypeInsn(INSTANCEOF, internalName); mv.visitInsn(IRETURN); Label l1 = new Label(); mv.visitLabel(l1); mv.visitLocalVariable("this", descriptorImplName, null, l0, l1, 0); mv.visitLocalVariable("o", "Ljava/lang/Object;", null, l0, l1, 1); mv.visitMaxs(1, 2); mv.visitEnd(); } { mv = cv.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, internalImplName, "$_toString", "Ljava/lang/String;"); mv.visitInsn(ARETURN); Label l1 = new Label(); mv.visitLabel(l1); mv.visitLocalVariable("this", descriptorImplName, null, l0, l1, 0); mv.visitMaxs(1, 1); mv.visitEnd(); } { mv = cv.visitMethod(ACC_PUBLIC, "annotationType", "()Ljava/lang/Class;", "()Ljava/lang/Class<+Ljava/lang/annotation/Annotation;>;", null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitLdcInsn(Type.getType(descriptor)); mv.visitInsn(ARETURN); Label l1 = new Label(); mv.visitLabel(l1); mv.visitLocalVariable("this", descriptorImplName, null, l0, l1, 0); mv.visitMaxs(1, 1); mv.visitEnd(); } { mv = cv.visitMethod(ACC_STATIC, "<clinit>", "()V", null, null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitTypeInsn(NEW, internalImplName); mv.visitInsn(DUP); mv.visitMethodInsn(INVOKESPECIAL, internalImplName, "<init>", "()V", false); mv.visitVarInsn(ASTORE, 0); Label l1 = new Label(); mv.visitLabel(l1); mv.visitTypeInsn(NEW, Constants.INSTANCE_SUPPLIER.getInternalName()); mv.visitInsn(DUP); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKESPECIAL, Constants.INSTANCE_SUPPLIER.getInternalName(), "<init>", "(Ljava/lang/Object;)V", false); mv.visitVarInsn(ASTORE, 1); Label l2 = new Label(); mv.visitLabel(l2); mv.visitLdcInsn(Type.getType(descriptor)); mv.visitVarInsn(ALOAD, 1); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKESTATIC, Constants.QUALIFIERS.getInternalName(), "register", "(Ljava/lang/Class;Ljava/util/function/Function;Ljava/util/function/Function;)V", false); Label l3 = new Label(); mv.visitLabel(l3); mv.visitInsn(RETURN); mv.visitLocalVariable("inst", descriptorImplName, null, l1, l3, 0); mv.visitLocalVariable("supplier", Constants.INSTANCE_SUPPLIER.getDescriptor(), null, l2, l3, 1); mv.visitMaxs(3, 2); mv.visitEnd(); } cv.visitEnd(); return cv; } { fv = cv.visitField(ACC_PRIVATE + ACC_FINAL + ACC_STATIC, "DEFAULTS", "Ljava/util/Map;", "Ljava/util/Map<Ljava/lang/String;Ljava/lang/Object;>;", null); fv.visitEnd(); } for (InDefinedShape method : declaredMethods) { fv = cv.visitField(ACC_PRIVATE + ACC_FINAL, method.getName(), method.getReturnType().asErasure().getDescriptor(), null, null); fv.visitEnd(); } { fv = cv.visitField(ACC_PRIVATE + ACC_FINAL, "$_hashcode", "I", null, null); fv.visitEnd(); } { fv = cv.visitField(ACC_PRIVATE + ACC_FINAL, "$_toString", "Ljava/lang/String;", null, null); fv.visitEnd(); } { mv = cv.visitMethod(ACC_PUBLIC, "<init>", "(Ljava/util/Map;)V", "(Ljava/util/Map<Ljava/lang/String;*>;)V", null); mv.visitCode(); Label l0 = new Label(); Label l1 = new Label(); Label l2 = new Label(); mv.visitTryCatchBlock(l0, l1, l2, "java/lang/ClassCastException"); Label l3 = new Label(); mv.visitLabel(l3); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); mv.visitLabel(l0); for (InDefinedShape method : declaredMethods) { String methodName = method.getName(); TypeDescription returnType = method.getReturnType().asErasure(); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(ALOAD, 1); mv.visitLdcInsn(methodName); mv.visitMethodInsn(INVOKESTATIC, internalImplName, "$_get", "(Ljava/util/Map;Ljava/lang/String;)Ljava/lang/Object;", false); if (returnType.isPrimitive()) { String wrapperInternal = ByteBuddyUtils.getWrapperClass(returnType).getInternalName(); mv.visitTypeInsn(CHECKCAST, wrapperInternal); mv.visitMethodInsn(INVOKEVIRTUAL, wrapperInternal, returnType.getName() + "Value", "()" + returnType.getDescriptor(), false); } else { mv.visitTypeInsn(CHECKCAST, returnType.getInternalName()); } mv.visitFieldInsn(PUTFIELD, internalImplName, methodName, returnType.getDescriptor()); } mv.visitLabel(l1); Label l9 = new Label(); mv.visitJumpInsn(GOTO, l9); mv.visitLabel(l2); mv.visitFrame(F_FULL, 2, new Object[] { internalImplName, "java/util/Map" }, 1, new Object[] { "java/lang/ClassCastException" }); mv.visitVarInsn(ASTORE, 2); Label l10 = new Label(); mv.visitLabel(l10); mv.visitTypeInsn(NEW, "java/lang/IllegalArgumentException"); mv.visitInsn(DUP); mv.visitTypeInsn(NEW, "java/lang/StringBuilder"); mv.visitInsn(DUP); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "()V", false); mv.visitLdcInsn("Wrong argument type: "); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/Object;)Ljava/lang/StringBuilder;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false); mv.visitVarInsn(ALOAD, 2); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/IllegalArgumentException", "<init>", "(Ljava/lang/String;Ljava/lang/Throwable;)V", false); mv.visitInsn(ATHROW); mv.visitLabel(l9); mv.visitFrame(F_SAME, 0, null, 0, null); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKESPECIAL, internalImplName, "$_initHashCode", "()I", false); mv.visitFieldInsn(PUTFIELD, internalImplName, "$_hashcode", "I"); Label l11 = new Label(); mv.visitLabel(l11); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKESPECIAL, internalImplName, "$_initToString", "()Ljava/lang/String;", false); mv.visitFieldInsn(PUTFIELD, internalImplName, "$_toString", "Ljava/lang/String;"); Label l12 = new Label(); mv.visitLabel(l12); mv.visitInsn(RETURN); Label l13 = new Label(); mv.visitLabel(l13); mv.visitLocalVariable("e", "Ljava/lang/ClassCastException;", null, l10, l9, 2); mv.visitLocalVariable("this", descriptorImplName, null, l3, l13, 0); mv.visitLocalVariable("data", "Ljava/util/Map;", "Ljava/util/Map<Ljava/lang/String;*>;", l3, l13, 1); mv.visitMaxs(0, 0); mv.visitEnd(); } { mv = cv.visitMethod(ACC_PRIVATE + ACC_STATIC, "$_get", "(Ljava/util/Map;Ljava/lang/String;)Ljava/lang/Object;", "<T:Ljava/lang/Object;>(Ljava/util/Map<Ljava/lang/String;*>;Ljava/lang/String;)TT;", null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKEINTERFACE, "java/util/Map", "get", "(Ljava/lang/Object;)Ljava/lang/Object;", true); mv.visitVarInsn(ASTORE, 2); Label l1 = new Label(); mv.visitLabel(l1); mv.visitVarInsn(ALOAD, 2); Label l2 = new Label(); mv.visitJumpInsn(IFNONNULL, l2); Label l3 = new Label(); mv.visitLabel(l3); mv.visitFieldInsn(GETSTATIC, internalImplName, "DEFAULTS", "Ljava/util/Map;"); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKEINTERFACE, "java/util/Map", "get", "(Ljava/lang/Object;)Ljava/lang/Object;", true); mv.visitVarInsn(ASTORE, 2); Label l4 = new Label(); mv.visitLabel(l4); mv.visitVarInsn(ALOAD, 2); mv.visitJumpInsn(IFNONNULL, l2); Label l5 = new Label(); mv.visitLabel(l5); mv.visitTypeInsn(NEW, "java/lang/IllegalArgumentException"); mv.visitInsn(DUP); mv.visitTypeInsn(NEW, "java/lang/StringBuilder"); mv.visitInsn(DUP); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "()V", false); mv.visitLdcInsn("Missing required annotation value: "); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/IllegalArgumentException", "<init>", "(Ljava/lang/String;)V", false); mv.visitInsn(ATHROW); mv.visitLabel(l2); mv.visitFrame(F_APPEND, 1, new Object[] { "java/lang/Object" }, 0, null); mv.visitVarInsn(ALOAD, 2); mv.visitInsn(ARETURN); Label l6 = new Label(); mv.visitLabel(l6); mv.visitLocalVariable("data", "Ljava/util/Map;", "Ljava/util/Map<Ljava/lang/String;*>;", l0, l6, 0); mv.visitLocalVariable("field", "Ljava/lang/String;", null, l0, l6, 1); mv.visitLocalVariable("o", "Ljava/lang/Object;", null, l1, l6, 2); mv.visitMaxs(0, 0); mv.visitEnd(); } for (InDefinedShape method : declaredMethods) { String methodName = method.getName(); TypeDescription returnType = method.getReturnType().asErasure(); String returnTypeDescriptor = returnType.getDescriptor(); mv = cv.visitMethod(ACC_PUBLIC, methodName, "()" + returnTypeDescriptor, null, null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, internalImplName, methodName, returnTypeDescriptor); if (returnType.isArray()) // array must be cloned. { mv.visitMethodInsn(INVOKEVIRTUAL, returnTypeDescriptor, "clone", "()Ljava/lang/Object;", false); mv.visitTypeInsn(CHECKCAST, returnTypeDescriptor); } if (returnType.isPrimitive()) { if (returnType.getName().equals(float.class.getName())) { mv.visitInsn(FRETURN); } else if (returnType.getName().equals(double.class.getName())) { mv.visitInsn(DRETURN); } else if (returnType.getName().equals(long.class.getName())) { mv.visitInsn(LRETURN); } else { mv.visitInsn(IRETURN); } } else { mv.visitInsn(ARETURN); } Label l1 = new Label(); mv.visitLabel(l1); mv.visitLocalVariable("this", descriptorImplName, null, l0, l1, 0); mv.visitMaxs(0, 0); mv.visitEnd(); } { mv = cv.visitMethod(ACC_PUBLIC, "<init>", "(" + descriptor + ")V", null, null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); Label l1 = new Label(); mv.visitLabel(l1); for (InDefinedShape method : declaredMethods) { String methodName = method.getName(); TypeDescription returnType = method.getReturnType().asErasure(); String returnTypeDescriptor = returnType.getDescriptor(); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(ALOAD, 1); mv.visitMethodInsn(INVOKEINTERFACE, internalName, methodName, "()" + returnTypeDescriptor, true); mv.visitFieldInsn(PUTFIELD, internalImplName, methodName, returnTypeDescriptor); } mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKESPECIAL, internalImplName, "$_initHashCode", "()I", false); mv.visitFieldInsn(PUTFIELD, internalImplName, "$_hashcode", "I"); Label l8 = new Label(); mv.visitLabel(l8); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKESPECIAL, internalImplName, "$_initToString", "()Ljava/lang/String;", false); mv.visitFieldInsn(PUTFIELD, internalImplName, "$_toString", "Ljava/lang/String;"); Label l9 = new Label(); mv.visitLabel(l9); mv.visitInsn(RETURN); Label l10 = new Label(); mv.visitLabel(l10); mv.visitLocalVariable("this", descriptorImplName, null, l0, l10, 0); mv.visitLocalVariable("data", descriptor, null, l0, l10, 1); mv.visitMaxs(3, 2); mv.visitEnd(); } { mv = cv.visitMethod(ACC_PUBLIC + ACC_STATIC, "unproxy", "(" + descriptor + ")" + descriptorImplName, null, null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitVarInsn(ALOAD, 0); mv.visitTypeInsn(INSTANCEOF, internalImplName); Label l1 = new Label(); mv.visitJumpInsn(IFEQ, l1); Label l2 = new Label(); mv.visitLabel(l2); mv.visitVarInsn(ALOAD, 0); mv.visitTypeInsn(CHECKCAST, internalImplName); mv.visitInsn(ARETURN); mv.visitLabel(l1); mv.visitFrame(F_SAME, 0, null, 0, null); mv.visitTypeInsn(NEW, internalImplName); mv.visitInsn(DUP); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKESPECIAL, internalImplName, "<init>", "(" + descriptor + ")V", false); mv.visitInsn(ARETURN); Label l3 = new Label(); mv.visitLabel(l3); mv.visitLocalVariable("ann", descriptor, null, l0, l3, 0); mv.visitMaxs(3, 1); mv.visitEnd(); } { mv = cv.visitMethod(ACC_PRIVATE, "$_initHashCode", "()I", null, null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitInsn(ICONST_0); mv.visitVarInsn(ISTORE, 1); Label l1 = new Label(); for (InDefinedShape method : declaredMethods) { String methodName = method.getName(); TypeDescription returnType = method.getReturnType().asErasure(); String returnTypeDescriptor = returnType.getDescriptor(); Label labelX = new Label(); mv.visitLabel(labelX); mv.visitVarInsn(ILOAD, 1); mv.visitIntInsn(BIPUSH, HASHCODE_MULTI); mv.visitLdcInsn(methodName); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "hashCode", "()I", false); mv.visitInsn(IMUL); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, internalImplName, methodName, returnTypeDescriptor); if (returnType.isPrimitive()) { TypeDescription wrapperClass = ByteBuddyUtils.getWrapperClass(returnType); mv.visitMethodInsn(INVOKESTATIC, wrapperClass.getInternalName(), "valueOf", "(" + returnTypeDescriptor + ")" + wrapperClass.getDescriptor(), false); mv.visitMethodInsn(INVOKEVIRTUAL, wrapperClass.getInternalName(), "hashCode", "()I", false); } else if (returnType.isArray()) { if (returnType.getComponentType().isPrimitive()) { mv.visitMethodInsn(INVOKESTATIC, "java/util/Arrays", "hashCode", "(" + returnTypeDescriptor + ")I", false); } else { mv.visitMethodInsn(INVOKESTATIC, "java/util/Arrays", "hashCode", "([Ljava/lang/Object;)I", false); } } else { mv.visitMethodInsn(INVOKEVIRTUAL, returnType.getInternalName(), "hashCode", "()I", false); } mv.visitInsn(IXOR); mv.visitInsn(IADD); mv.visitVarInsn(ISTORE, 1); } mv.visitVarInsn(ILOAD, 1); mv.visitInsn(IRETURN); Label l7 = new Label(); mv.visitLabel(l7); mv.visitLocalVariable("this", descriptorImplName, null, l0, l7, 0); mv.visitLocalVariable("sum", "I", null, l1, l7, 1); mv.visitMaxs(0, 0); mv.visitEnd(); } { mv = cv.visitMethod(ACC_PUBLIC, "hashCode", "()I", null, null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, internalImplName, "$_hashcode", "I"); mv.visitInsn(IRETURN); Label l1 = new Label(); mv.visitLabel(l1); mv.visitLocalVariable("this", descriptorImplName, null, l0, l1, 0); mv.visitMaxs(0, 0); mv.visitEnd(); } { mv = cv.visitMethod(ACC_PUBLIC, "equals", "(Ljava/lang/Object;)Z", null, null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitVarInsn(ALOAD, 1); mv.visitTypeInsn(INSTANCEOF, internalName); Label l1 = new Label(); mv.visitJumpInsn(IFNE, l1); Label l2 = new Label(); mv.visitLabel(l2); mv.visitInsn(ICONST_0); mv.visitInsn(IRETURN); mv.visitLabel(l1); mv.visitFrame(F_SAME, 0, null, 0, null); mv.visitVarInsn(ALOAD, 1); mv.visitTypeInsn(CHECKCAST, internalName); mv.visitVarInsn(ASTORE, 2); Label l3 = new Label(); mv.visitLabel(l3); Label l4 = new Label(); for (InDefinedShape method : declaredMethods) { String methodName = method.getName(); TypeDescription returnType = method.getReturnType().asErasure(); String returnTypeDescriptor = returnType.getDescriptor(); boolean isPrimitive = returnType.isPrimitive(); boolean isFloat = isPrimitive && (returnType.getName().equals(float.class.getName()) || returnType.getName().equals(double.class.getName())); TypeDescription wrapperClass = ByteBuddyUtils.getWrapperClass(returnType); String wrapperClassInternalName = wrapperClass.getInternalName(); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, internalImplName, methodName, returnTypeDescriptor); if (isFloat) { mv.visitMethodInsn(INVOKESTATIC, wrapperClassInternalName, "valueOf", "(" + returnTypeDescriptor + ")" + wrapperClass.getDescriptor(), false); } mv.visitVarInsn(ALOAD, 2); mv.visitMethodInsn(INVOKEINTERFACE, internalName, methodName, "()" + returnTypeDescriptor, true); if (isPrimitive && !isFloat) { if (returnType.getName().equals(long.class.getName())) { mv.visitInsn(LCMP); mv.visitJumpInsn(IFNE, l4); } else { mv.visitJumpInsn(IF_ICMPNE, l4); } } else { if (isFloat) { mv.visitMethodInsn(INVOKESTATIC, wrapperClassInternalName, "valueOf", "(" + returnTypeDescriptor + ")" + wrapperClass.getDescriptor(), false); } if (returnType.isArray()) { TypeDescription componentType = returnType.getComponentType(); if (componentType.isPrimitive()) { mv.visitMethodInsn(INVOKESTATIC, "java/util/Arrays", "equals", "(" + returnType.getDescriptor() + "" + returnType.getDescriptor() + ")Z", false); } else { mv.visitMethodInsn(INVOKESTATIC, "java/util/Arrays", "equals", "([Ljava/lang/Object;[Ljava/lang/Object;)Z", false); } } else { mv.visitMethodInsn(INVOKEVIRTUAL, wrapperClassInternalName, "equals", "(Ljava/lang/Object;)Z", false); } mv.visitJumpInsn(IFEQ, l4); } } mv.visitInsn(ICONST_1); Label l6 = new Label(); mv.visitJumpInsn(GOTO, l6); mv.visitLabel(l4); mv.visitFrame(F_APPEND, 1, new Object[] { internalName }, 0, null); mv.visitInsn(ICONST_0); mv.visitLabel(l6); mv.visitFrame(F_SAME1, 0, null, 1, new Object[] { INTEGER }); mv.visitInsn(IRETURN); Label l7 = new Label(); mv.visitLabel(l7); mv.visitLocalVariable("this", descriptorImplName, null, l0, l7, 0); mv.visitLocalVariable("o", "Ljava/lang/Object;", null, l0, l7, 1); mv.visitLocalVariable("other", descriptor, null, l3, l7, 2); mv.visitMaxs(0, 0); mv.visitEnd(); } { mv = cv.visitMethod(ACC_PRIVATE, "$_initToString", "()Ljava/lang/String;", null, null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitTypeInsn(NEW, "java/lang/StringBuilder"); mv.visitInsn(DUP); //noinspection MagicNumber mv.visitIntInsn(SIPUSH, methodsSize * 30); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(I)V", false); mv.visitIntInsn(BIPUSH, '@'); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(C)Ljava/lang/StringBuilder;", false); mv.visitLdcInsn(Type.getType(descriptor)); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getName", "()Ljava/lang/String;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false); mv.visitIntInsn(BIPUSH, '('); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(C)Ljava/lang/StringBuilder;", false); for (Iterator<InDefinedShape> iterator = declaredMethods.iterator(); iterator.hasNext();) { InDefinedShape method = iterator.next(); String methodName = method.getName(); TypeDescription returnType = method.getReturnType().asErasure(); String returnTypeDescriptor = returnType.getDescriptor(); mv.visitLdcInsn(methodName); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false); mv.visitIntInsn(BIPUSH, '='); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(C)Ljava/lang/StringBuilder;", false); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, internalImplName, methodName, returnTypeDescriptor); if (returnType.isArray()) { TypeDescription componentType = returnType.getComponentType(); if (componentType.isPrimitive()) { mv.visitMethodInsn(INVOKESTATIC, "java/util/Arrays", "toString", "(" + returnTypeDescriptor + ")Ljava/lang/String;", false); } else { mv.visitMethodInsn(INVOKESTATIC, "java/util/Arrays", "toString", "([Ljava/lang/Object;)Ljava/lang/String;", false); } mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false); } else if (returnType.isPrimitive()) { String type = returnType.getName(); if (type.equals(double.class.getName()) || type.equals(long.class.getName()) || type.equals(float.class.getName()) || type.equals(boolean.class.getName()) || type.equals(char.class.getName())) { mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(" + returnTypeDescriptor + ")Ljava/lang/StringBuilder;", false); } else { mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(I)Ljava/lang/StringBuilder;", false); } } else { if (!returnType.equals(ForLoadedType.STRING)) { mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "toString", "()Ljava/lang/String;", false); } mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false); } if (iterator.hasNext()) { mv.visitLdcInsn(", "); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false); } } mv.visitIntInsn(BIPUSH, ')'); Label l3 = new Label(); mv.visitLabel(l3); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(C)Ljava/lang/StringBuilder;", false); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false); Label l4 = new Label(); mv.visitLabel(l4); mv.visitInsn(ARETURN); Label l5 = new Label(); mv.visitLabel(l5); mv.visitLocalVariable("this", descriptorImplName, null, l0, l5, 0); mv.visitMaxs(0, 0); mv.visitEnd(); } { mv = cv.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitVarInsn(ALOAD, 0); mv.visitFieldInsn(GETFIELD, internalImplName, "$_toString", "Ljava/lang/String;"); mv.visitInsn(ARETURN); Label l1 = new Label(); mv.visitLabel(l1); mv.visitLocalVariable("this", descriptorImplName, null, l0, l1, 0); mv.visitMaxs(0, 0); mv.visitEnd(); } { mv = cv.visitMethod(ACC_PUBLIC, "annotationType", "()Ljava/lang/Class;", "()Ljava/lang/Class<+Ljava/lang/annotation/Annotation;>;", null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitLdcInsn(Type.getType(descriptor)); mv.visitInsn(ARETURN); Label l1 = new Label(); mv.visitLabel(l1); mv.visitLocalVariable("this", descriptorImplName, null, l0, l1, 0); mv.visitMaxs(0, 0); mv.visitEnd(); } { mv = cv.visitMethod(ACC_STATIC, "<clinit>", "()V", null, null); mv.visitCode(); Label l0 = new Label(); mv.visitLabel(l0); mv.visitLdcInsn(Type.getType(descriptor)); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getDeclaredMethods", "()[Ljava/lang/reflect/Method;", false); mv.visitVarInsn(ASTORE, 0); Label l1 = new Label(); mv.visitLabel(l1); mv.visitTypeInsn(NEW, "java/util/HashMap"); mv.visitInsn(DUP); mv.visitVarInsn(ALOAD, 0); mv.visitInsn(ARRAYLENGTH); mv.visitMethodInsn(INVOKESPECIAL, "java/util/HashMap", "<init>", "(I)V", false); mv.visitFieldInsn(PUTSTATIC, internalImplName, "DEFAULTS", "Ljava/util/Map;"); Label l2 = new Label(); mv.visitLabel(l2); mv.visitVarInsn(ALOAD, 0); mv.visitVarInsn(ASTORE, 1); mv.visitVarInsn(ALOAD, 1); mv.visitInsn(ARRAYLENGTH); mv.visitVarInsn(ISTORE, 2); mv.visitInsn(ICONST_0); mv.visitVarInsn(ISTORE, 3); Label l3 = new Label(); mv.visitLabel(l3); mv.visitFrame(F_FULL, 4, new Object[] { "[Ljava/lang/reflect/Method;", "[Ljava/lang/reflect/Method;", INTEGER, INTEGER }, 0, STACK); mv.visitVarInsn(ILOAD, 3); mv.visitVarInsn(ILOAD, 2); Label l4 = new Label(); mv.visitJumpInsn(IF_ICMPGE, l4); mv.visitVarInsn(ALOAD, 1); mv.visitVarInsn(ILOAD, 3); mv.visitInsn(AALOAD); mv.visitVarInsn(ASTORE, 4); Label l5 = new Label(); mv.visitLabel(l5); mv.visitVarInsn(ALOAD, 4); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Method", "getDefaultValue", "()Ljava/lang/Object;", false); mv.visitVarInsn(ASTORE, 5); Label l6 = new Label(); mv.visitLabel(l6); mv.visitVarInsn(ALOAD, 5); Label l7 = new Label(); mv.visitJumpInsn(IFNULL, l7); Label l8 = new Label(); mv.visitLabel(l8); mv.visitFieldInsn(GETSTATIC, internalImplName, "DEFAULTS", "Ljava/util/Map;"); mv.visitVarInsn(ALOAD, 4); mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Method", "getName", "()Ljava/lang/String;", false); mv.visitVarInsn(ALOAD, 5); mv.visitMethodInsn(INVOKEINTERFACE, "java/util/Map", "put", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", true); mv.visitInsn(POP); mv.visitLabel(l7); mv.visitFrame(F_SAME, 0, null, 0, null); mv.visitIincInsn(3, 1); mv.visitJumpInsn(GOTO, l3); mv.visitLabel(l4); mv.visitFrame(F_CHOP, 3, null, 0, null); mv.visitLdcInsn(Type.getType(descriptor)); //noinspection deprecation mv.visitInvokeDynamicInsn("apply", "()Ljava/util/function/Function;", new Handle(H_INVOKESTATIC, "java/lang/invoke/LambdaMetafactory", "metafactory", "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;" + "Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)" + "Ljava/lang/invoke/CallSite;"), Type.getType("(Ljava/lang/Object;)Ljava/lang/Object;"), new Handle(H_NEWINVOKESPECIAL, internalImplName, "<init>", "(Ljava/util/Map;)V"), Type.getType("(Ljava/util/Map;)" + descriptor)); //noinspection deprecation mv.visitInvokeDynamicInsn("apply", "()Ljava/util/function/Function;", new Handle(H_INVOKESTATIC, "java/lang/invoke/LambdaMetafactory", "metafactory", "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;" + "Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)" + "Ljava/lang/invoke/CallSite;"), Type.getType("(Ljava/lang/Object;)Ljava/lang/Object;"), new Handle(H_INVOKESTATIC, internalImplName, "unproxy", "(" + descriptor + ")" + descriptorImplName), Type.getType("(" + descriptor + ")" + descriptor)); mv.visitMethodInsn(INVOKESTATIC, Type.getInternalName(Qualifiers.class), "register", "(Ljava/lang/Class;Ljava/util/function/Function;Ljava/util/function/Function;)V", false); Label l9 = new Label(); mv.visitLabel(l9); mv.visitInsn(RETURN); mv.visitLocalVariable("defaultValue", "Ljava/lang/Object;", null, l6, l7, 5); mv.visitLocalVariable("method", "Ljava/lang/reflect/Method;", null, l5, l7, 4); mv.visitLocalVariable("methods", "[Ljava/lang/reflect/Method;", null, l1, l9, 0); mv.visitMaxs(0, 0); mv.visitEnd(); } cv.visitEnd(); return cv; } } }