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// Copyright (c) 2003-present, Jodd Team (http://jodd.org)
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
package jodd.proxetta;
import jodd.asm.AsmUtil;
import jodd.asm7.MethodVisitor;
import jodd.asm7.Opcodes;
import jodd.asm7.Type;
import jodd.proxetta.asm.ProxettaAsmUtil;
import jodd.util.ClassLoaderUtil;
import java.lang.reflect.Array;
import java.lang.reflect.Method;
import static jodd.asm7.Opcodes.AASTORE;
import static jodd.asm7.Opcodes.ANEWARRAY;
import static jodd.asm7.Opcodes.DUP;
import static jodd.asm7.Opcodes.POP;
import static jodd.proxetta.asm.ProxettaAsmUtil.checkArgumentIndex;
import static jodd.proxetta.asm.ProxettaAsmUtil.loadMethodArgumentAsObject;
import static jodd.proxetta.asm.ProxettaAsmUtil.loadMethodArgumentClass;
import static jodd.proxetta.asm.ProxettaAsmUtil.pushInt;
/**
* Replacements methods for {@link jodd.proxetta.ProxyTarget} methods.
*/
public class ProxyTargetReplacement {
public static final String PROXY_TARGET_INFO = "jodd/proxetta/ProxyTargetInfo";
/**
* Visits replacement code for {@link ProxyTarget#argumentsCount()}.
*/
public static void argumentsCount(final MethodVisitor mv, final MethodInfo methodInfo) {
int argsCount = methodInfo.getArgumentsCount();
pushInt(mv, argsCount);
}
/**
* Visits replacement code for {@link ProxyTarget#argumentType(int)}.
*/
public static void argumentType(final MethodVisitor mv, final MethodInfo methodInfo, final int argIndex) {
checkArgumentIndex(methodInfo, argIndex);
mv.visitInsn(POP);
loadMethodArgumentClass(mv, methodInfo, argIndex);
}
/**
* Visits replacement code for {@link ProxyTarget#argument(int)}.
*/
public static void argument(final MethodVisitor mv, final MethodInfo methodInfo, final int argIndex) {
checkArgumentIndex(methodInfo, argIndex);
mv.visitInsn(POP);
loadMethodArgumentAsObject(mv, methodInfo, argIndex);
}
/**
* Visits replacement code for {@link ProxyTarget#createArgumentsArray()}.
*/
public static void createArgumentsArray(final MethodVisitor mv, final MethodInfo methodInfo) {
int argsCount = methodInfo.getArgumentsCount();
pushInt(mv, argsCount);
mv.visitTypeInsn(ANEWARRAY, AsmUtil.SIGNATURE_JAVA_LANG_OBJECT);
for (int i = 0; i < argsCount; i++) {
mv.visitInsn(DUP);
pushInt(mv, i);
loadMethodArgumentAsObject(mv, methodInfo, i + 1);
mv.visitInsn(AASTORE);
}
}
/**
* Visits replacement code for {@link ProxyTarget#createArgumentsClassArray()}.
*/
public static void createArgumentsClassArray(final MethodVisitor mv, final MethodInfo methodInfo) {
int argsCount = methodInfo.getArgumentsCount();
pushInt(mv, argsCount);
mv.visitTypeInsn(ANEWARRAY, AsmUtil.SIGNATURE_JAVA_LANG_CLASS);
for (int i = 0; i < argsCount; i++) {
mv.visitInsn(DUP);
pushInt(mv, i);
loadMethodArgumentClass(mv, methodInfo, i + 1);
mv.visitInsn(AASTORE);
}
}
/**
* Visits replacement code for {@link ProxyTarget#returnType()}.
*/
public static void returnType(final MethodVisitor mv, final MethodInfo methodInfo) {
ProxettaAsmUtil.loadClass(mv, methodInfo.getReturnType().getOpcode(), methodInfo.getReturnType().getName());
}
/**
* Visits replacement code for {@link ProxyTarget#targetMethodName()}.
*/
public static void targetMethodName(final MethodVisitor mv, final MethodInfo methodInfo) {
mv.visitLdcInsn(methodInfo.getMethodName());
}
/**
* Visits replacement code for {@link ProxyTarget#targetMethodSignature()}.
*/
public static void targetMethodSignature(final MethodVisitor mv, final MethodInfo methodInfo) {
mv.visitLdcInsn(methodInfo.getSignature());
}
/**
* Visits replacement code for {@link ProxyTarget#targetMethodDescription()}.
*/
public static void targetMethodDescription(final MethodVisitor mv, final MethodInfo methodInfo) {
mv.visitLdcInsn(methodInfo.getDescription());
}
/**
* Visits replacement code for {@link ProxyTarget#targetClass()}.
*/
public static void targetClass(final MethodVisitor mv, final MethodInfo methodInfo) {
ClassInfo classInfo = methodInfo.getClassInfo();
mv.visitLdcInsn(Type.getType('L' + classInfo.getReference() + ';'));
}
/**
* Visits replacement code for {@link ProxyTarget#info()}.
*/
public static void info(final MethodVisitor mv, final MethodInfo methodInfo, final int argsOff) {
mv.visitTypeInsn(Opcodes.NEW, PROXY_TARGET_INFO);
mv.visitInsn(DUP);
mv.visitMethodInsn(Opcodes.INVOKESPECIAL, PROXY_TARGET_INFO, "", "()V", false);
// int argsOff = methodInfo.getAllArgumentsSize();
// argsOff++;
mv.visitVarInsn(Opcodes.ASTORE, argsOff);
// argument count
mv.visitVarInsn(Opcodes.ALOAD, argsOff);
argumentsCount(mv, methodInfo);
mv.visitFieldInsn(Opcodes.PUTFIELD, PROXY_TARGET_INFO, "argumentCount", "I");
// arguments class
mv.visitVarInsn(Opcodes.ALOAD, argsOff);
createArgumentsClassArray(mv, methodInfo);
mv.visitFieldInsn(Opcodes.PUTFIELD, PROXY_TARGET_INFO, "argumentsClasses", "[Ljava/lang/Class;");
// arguments
mv.visitVarInsn(Opcodes.ALOAD, argsOff);
createArgumentsArray(mv, methodInfo);
mv.visitFieldInsn(Opcodes.PUTFIELD, PROXY_TARGET_INFO, "arguments", "[Ljava/lang/Object;");
// return type
mv.visitVarInsn(Opcodes.ALOAD, argsOff);
returnType(mv, methodInfo);
mv.visitFieldInsn(Opcodes.PUTFIELD, PROXY_TARGET_INFO, "returnType", AsmUtil.L_SIGNATURE_JAVA_LANG_CLASS);
// target method name
mv.visitVarInsn(Opcodes.ALOAD, argsOff);
targetMethodName(mv, methodInfo);
mv.visitFieldInsn(Opcodes.PUTFIELD, PROXY_TARGET_INFO, "targetMethodName", AsmUtil.L_SIGNATURE_JAVA_LANG_STRING);
// target method name
mv.visitVarInsn(Opcodes.ALOAD, argsOff);
targetMethodDescription(mv, methodInfo);
mv.visitFieldInsn(Opcodes.PUTFIELD, PROXY_TARGET_INFO, "targetMethodDescription", AsmUtil.L_SIGNATURE_JAVA_LANG_STRING);
// target method name
mv.visitVarInsn(Opcodes.ALOAD, argsOff);
targetMethodSignature(mv, methodInfo);
mv.visitFieldInsn(Opcodes.PUTFIELD, PROXY_TARGET_INFO, "targetMethodSignature", AsmUtil.L_SIGNATURE_JAVA_LANG_STRING);
// target class
mv.visitVarInsn(Opcodes.ALOAD, argsOff);
targetClass(mv, methodInfo);
mv.visitFieldInsn(Opcodes.PUTFIELD, PROXY_TARGET_INFO, "targetClass", AsmUtil.L_SIGNATURE_JAVA_LANG_CLASS);
// the end
mv.visitVarInsn(Opcodes.ALOAD, argsOff);
}
/**
* Visits replacement code for {@link ProxyTarget#targetMethodAnnotation(String, String)}.
*/
public static void targetMethodAnnotation(final MethodVisitor mv, final MethodInfo methodInfo, final String[] args) {
AnnotationInfo[] anns = methodInfo.getAnnotations();
if (anns != null) {
targetAnnotation(mv, anns, args);
}
}
/**
* Visits replacement code for {@link ProxyTarget#targetClassAnnotation(String, String)}.
*/
public static void targetClassAnnotation(final MethodVisitor mv, final ClassInfo classInfo, final String[] args) {
AnnotationInfo[] anns = classInfo.getAnnotations();
if (anns != null) {
targetAnnotation(mv, anns, args);
} else {
mv.visitInsn(Opcodes.ACONST_NULL);
}
}
private static void targetAnnotation(final MethodVisitor mv, final AnnotationInfo[] anns, final String[] args) {
for (AnnotationInfo ann : anns) {
String annotationSignature = ann.getAnnotationSignature();
Method annotationMethod = null;
if (annotationSignature.equals(args[0])) {
String elementName = args[1];
Object elementValue = ann.getElement(elementName);
if (elementValue == null) {
// read default annotation
String annotationClass = ann.getAnnotationClassname();
try {
Class annotation = ClassLoaderUtil.loadClass(annotationClass);
annotationMethod = annotation.getMethod(elementName);
elementValue = annotationMethod.getDefaultValue();
}
catch (Exception ignore) {
elementValue = null;
}
if (elementValue == null) {
mv.visitInsn(Opcodes.ACONST_NULL);
return;
}
}
Class elementValueClass = elementValue.getClass();
if (!elementValueClass.isArray()) {
// non-arrays
ProxettaAsmUtil.visitElementValue(mv, elementValue, true);
return;
}
else {
// arrays
Class componentType = elementValueClass.getComponentType();
String annotationClass = ann.getAnnotationClassname();
try {
if (annotationMethod == null) {
Class annotation = ClassLoaderUtil.loadClass(annotationClass);
annotationMethod = annotation.getMethod(elementName);
}
componentType = annotationMethod.getReturnType().getComponentType();
}
catch (Exception ignore) {
}
int size = Array.getLength(elementValue);
ProxettaAsmUtil.pushInt(mv, size);
ProxettaAsmUtil.newArray(mv, componentType);
for (int i = 0; i < size; i++) {
mv.visitInsn(DUP);
ProxettaAsmUtil.pushInt(mv, i);
Object value = Array.get(elementValue, i);
ProxettaAsmUtil.visitElementValue(mv, value, false);
ProxettaAsmUtil.storeIntoArray(mv, componentType);
}
return;
}
}
}
}
}