/**************************************************************************************
* Copyright (c) Jonas Bon�r, Alexandre Vasseur. All rights reserved. *
* http://aspectwerkz.codehaus.org *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the LGPL license *
* a copy of which has been included with this distribution in the license.txt file. *
**************************************************************************************/
package org.codehaus.aspectwerkz.transform.inlining.compiler;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.CodeVisitor;
import org.objectweb.asm.Constants;
import org.objectweb.asm.Label;
import org.objectweb.asm.Type;
import org.codehaus.aspectwerkz.DeploymentModel;
import org.codehaus.aspectwerkz.cflow.CflowCompiler;
import org.codehaus.aspectwerkz.reflect.ClassInfo;
import org.codehaus.aspectwerkz.reflect.ClassInfoHelper;
import org.codehaus.aspectwerkz.reflect.MethodInfo;
import org.codehaus.aspectwerkz.reflect.ReflectionInfo;
import org.codehaus.aspectwerkz.reflect.impl.asm.AsmClassInfo;
import org.codehaus.aspectwerkz.aspect.AdviceInfo;
import org.codehaus.aspectwerkz.exception.DefinitionException;
import org.codehaus.aspectwerkz.aspect.AdviceType;
import org.codehaus.aspectwerkz.definition.AspectDefinition;
import org.codehaus.aspectwerkz.transform.Compiler;
import org.codehaus.aspectwerkz.transform.TransformationConstants;
import org.codehaus.aspectwerkz.transform.inlining.EmittedJoinPoint;
import org.codehaus.aspectwerkz.transform.inlining.AsmHelper;
import org.codehaus.aspectwerkz.transform.inlining.AdviceMethodInfo;
import org.codehaus.aspectwerkz.transform.inlining.AspectInfo;
import org.codehaus.aspectwerkz.transform.inlining.AspectModelManager;
import org.codehaus.aspectwerkz.transform.inlining.spi.AspectModel;
import org.codehaus.aspectwerkz.joinpoint.management.JoinPointType;
import org.codehaus.aspectwerkz.joinpoint.management.AdviceInfoContainer;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Modifier;
import java.util.Iterator;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import java.util.HashSet;
import java.util.HashMap;
import java.util.Map;
/**
* Abstract base class for the different join point compiler implementations.
* <p/>
* Compiles/generates a class that represents a specific join point, a class which invokes the advices
* and the target join point statically.
* <p/>
* FIXME: depending on hotswap needs, remove the implements StaticJP or JP decision
* FIXME: remove isOptimizedJP and put it global
*
* @author <a href="mailto:jboner@codehaus.org">Jonas Bon�r </a>
* @author <a href="mailto:alex AT gnilux DOT com">Alexandre Vasseur </a>
* @author <a href="mailto:the_mindstorm@evolva.ro">Alex Popescu</a>
*/
public abstract class AbstractJoinPointCompiler implements Compiler, TransformationConstants {
protected static final String TARGET_CLASS_FIELD_NAME = "TARGET_CLASS";
protected static final String THIS_CLASS_FIELD_NAME = "THIS_CLASS";
// FIXME define these two using VM option - if dump dir specified then dump
public static final boolean DUMP_JIT_CLASSES = false;
protected static final String DUMP_DIR = "_dump";
protected final String m_callerClassName;
protected final String m_calleeClassName;
protected final String m_callerClassSignature;
protected final String m_calleeClassSignature;
protected final String m_joinPointClassName;
protected final int m_joinPointType;
protected final int m_joinPointHash;
protected final String m_callerMethodName;
protected final String m_callerMethodDesc;
protected final int m_callerMethodModifiers;
protected final String m_calleeMemberName;
protected final String m_calleeMemberDesc;
protected final int m_calleeMemberModifiers;
protected ClassWriter m_cw;
protected AspectInfo[] m_aspectInfos;
protected AspectModel[] m_aspectModels;
protected AdviceMethodInfo[] m_aroundAdviceMethodInfos;
protected AdviceMethodInfo[] m_beforeAdviceMethodInfos;
protected AdviceMethodInfo[] m_afterFinallyAdviceMethodInfos;
protected AdviceMethodInfo[] m_afterReturningAdviceMethodInfos;
protected AdviceMethodInfo[] m_afterThrowingAdviceMethodInfos;
protected final List m_customProceedMethodStructs = new ArrayList();
protected boolean m_hasAroundAdvices = false;
protected boolean m_requiresThisOrTarget = false;
protected boolean m_requiresJoinPoint = false;
protected String[] m_fieldNames;
protected Type[] m_argumentTypes;
protected Type m_returnType;
protected boolean m_isThisAdvisable = false;
/**
* Creates a new join point compiler instance.
*
* @param model the compilation model
*/
public AbstractJoinPointCompiler(final CompilationInfo.Model model) {
m_joinPointClassName = model.getJoinPointClassName();
final EmittedJoinPoint emittedJoinPoint = model.getEmittedJoinPoint();
m_joinPointHash = emittedJoinPoint.getJoinPointHash();
m_joinPointType = emittedJoinPoint.getJoinPointType();
m_callerMethodName = emittedJoinPoint.getCallerMethodName();
m_callerMethodDesc = emittedJoinPoint.getCallerMethodDesc();
m_callerMethodModifiers = emittedJoinPoint.getCallerMethodModifiers();
m_calleeMemberName = emittedJoinPoint.getCalleeMemberName();
m_calleeMemberDesc = emittedJoinPoint.getCalleeMemberDesc();
m_calleeMemberModifiers = emittedJoinPoint.getCalleeMemberModifiers();
// NOTE: internal compiler class name format is ALWAYS using '/'
m_callerClassName = emittedJoinPoint.getCallerClassName().replace('.', '/');
m_calleeClassName = emittedJoinPoint.getCalleeClassName().replace('.', '/');
m_callerClassSignature = L + emittedJoinPoint.getCallerClassName().replace('.', '/') + SEMICOLON;
m_calleeClassSignature = L + emittedJoinPoint.getCalleeClassName().replace('.', '/') + SEMICOLON;
m_argumentTypes = getJoinPointArgumentTypes();
m_returnType = getJoinPointReturnType();
initialize(model);
}
/**
* Initializes the the join point compiler.
*
* @param model the compilation model
*/
private synchronized void initialize(final CompilationInfo.Model model) {
// check if 'target' is Advisable, e.g. can handle runtime per instance deployment
checkIfThisIsAdvisable(model);
// create the aspect fields
final AdviceInfoContainer advices = model.getAdviceInfoContainer();
collectAdviceInfo(advices);
collectCustomProceedMethods(model, advices);
// compute the optimization we can use
m_hasAroundAdvices = m_aroundAdviceMethodInfos.length > 0;
m_requiresThisOrTarget = requiresThisOrTarget();
m_requiresJoinPoint = requiresJoinPoint();
// setup models at the end so that they can override m_requiresJoinPoint
setupReferencedAspectModels();
m_cw = AsmHelper.newClassWriter(true);
}
/**
* Collects the advice info.
*
* @param advices
*/
private void collectAdviceInfo(final AdviceInfoContainer advices) {
final List aspectQualifiedNames = new ArrayList();// in fact a Set but we need indexOf
final Set aspectInfos = new HashSet();
m_beforeAdviceMethodInfos = getAdviceMethodInfos(
aspectQualifiedNames, aspectInfos, advices.getBeforeAdviceInfos()
);
m_aroundAdviceMethodInfos = getAdviceMethodInfos(
aspectQualifiedNames, aspectInfos, advices.getAroundAdviceInfos()
);
m_afterReturningAdviceMethodInfos = getAdviceMethodInfos(
aspectQualifiedNames, aspectInfos, advices.getAfterReturningAdviceInfos()
);
m_afterFinallyAdviceMethodInfos = getAdviceMethodInfos(
aspectQualifiedNames, aspectInfos, advices.getAfterFinallyAdviceInfos()
);
m_afterThrowingAdviceMethodInfos = getAdviceMethodInfos(
aspectQualifiedNames, aspectInfos, advices.getAfterThrowingAdviceInfos()
);
m_aspectInfos = (AspectInfo[]) aspectInfos.toArray(new AspectInfo[aspectInfos.size()]);
}
/**
* Collects the custom proceed methods used in the advice specified.
*
* @param model
* @param advices
*/
private void collectCustomProceedMethods(final CompilationInfo.Model model,
final AdviceInfoContainer advices) {
ClassLoader loader = model.getThisClassInfo().getClassLoader();
final AdviceInfo[] beforeAdviceInfos = advices.getBeforeAdviceInfos();
for (int i = 0; i < beforeAdviceInfos.length; i++) {
collectCustomProceedMethods(beforeAdviceInfos[i], loader);
}
final AdviceInfo[] aroundAdviceInfos = advices.getAroundAdviceInfos();
for (int i = 0; i < aroundAdviceInfos.length; i++) {
collectCustomProceedMethods(aroundAdviceInfos[i], loader);
}
final AdviceInfo[] afterFinallyAdviceInfos = advices.getAfterFinallyAdviceInfos();
for (int i = 0; i < afterFinallyAdviceInfos.length; i++) {
collectCustomProceedMethods(afterFinallyAdviceInfos[i], loader);
}
final AdviceInfo[] afterReturningAdviceInfos = advices.getAfterReturningAdviceInfos();
for (int i = 0; i < afterReturningAdviceInfos.length; i++) {
collectCustomProceedMethods(afterReturningAdviceInfos[i], loader);
}
final AdviceInfo[] afterThrowingAdviceInfos = advices.getAfterThrowingAdviceInfos();
for (int i = 0; i < afterThrowingAdviceInfos.length; i++) {
collectCustomProceedMethods(afterThrowingAdviceInfos[i], loader);
}
}
/**
* Collects the custom proceed methods used in the advice specified.
*
* @param adviceInfo
* @param loader
*/
private void collectCustomProceedMethods(final AdviceInfo adviceInfo, final ClassLoader loader) {
final Type[] paramTypes = adviceInfo.getMethodParameterTypes();
if (paramTypes.length != 0) {
Type firstParam = paramTypes[0];
//TODO should we support JP at other positions or lock the other advice models then so that JP..
// ..is not there or first only ?
// check if first param is an object but not a JP or SJP
if (firstParam.getSort() == Type.OBJECT &&
!firstParam.getClassName().equals(JOIN_POINT_JAVA_CLASS_NAME) &&
!firstParam.getClassName().equals(STATIC_JOIN_POINT_JAVA_CLASS_NAME)) {
ClassInfo classInfo = AsmClassInfo.getClassInfo(firstParam.getClassName(), loader);
if (ClassInfoHelper.implementsInterface(classInfo, JOIN_POINT_JAVA_CLASS_NAME) ||
ClassInfoHelper.implementsInterface(classInfo, STATIC_JOIN_POINT_JAVA_CLASS_NAME)) {
// we have ourselves a custom joinpoint
MethodInfo[] methods = classInfo.getMethods();
for (int j = 0; j < methods.length; j++) {
MethodInfo method = methods[j];
if (method.getName().equals(PROCEED_METHOD_NAME)) {
// we inherit the binding from the advice that actually use us
// for now the first advice sets the rule
// it is up to the user to ensure consistency if the custom proceed
// is used more than once in different advices.
m_customProceedMethodStructs.add(new CustomProceedMethodStruct(
method,
adviceInfo.getMethodToArgIndexes()
));
}
}
}
}
}
}
/**
* Checks if the this class implements the Advisable interface.
*
* @param model
*/
private void checkIfThisIsAdvisable(final CompilationInfo.Model model) {
if (!Modifier.isStatic(m_callerMethodModifiers)) {
ClassInfo[] interfaces = model.getThisClassInfo().getInterfaces();
for (int i = 0; i < interfaces.length; i++) {
if (interfaces[i].getName().equals(ADVISABLE_CLASS_JAVA_NAME)) {
m_isThisAdvisable = true;
break;
}
}
}
}
/**
* Retrives and sets the aspect models that are referenced in this compilation phase.
*/
private void setupReferencedAspectModels() {
Map aspectModelMap = new HashMap();
for (int i = 0; i < m_aspectInfos.length; i++) {
AspectDefinition aspectDef = m_aspectInfos[i].getAspectDefinition();
if (aspectDef.isAspectWerkzAspect()) {
continue; // AW Aspect Model not managed by AspectModelManager
}
String type = aspectDef.getAspectModel();
AspectModel aspectModel = AspectModelManager.getModelFor(type);
aspectModelMap.put(type, aspectModel);
if (aspectModel.requiresReflectiveInfo()) {
m_requiresJoinPoint = true; // if at least one model requries RTTI then build it
}
}
m_aspectModels = (AspectModel[]) aspectModelMap.values().toArray(new AspectModel[aspectModelMap.size()]);
}
/**
* Returns the join point interface class name.
*
* @return
*/
private String getJoinPointInterface() {
String joinPointInterface;
if (requiresProceedMethod() || m_requiresJoinPoint) {
joinPointInterface = JOIN_POINT_CLASS_NAME;
} else {
joinPointInterface = STATIC_JOIN_POINT_CLASS_NAME;
}
return joinPointInterface;
}
/**
* Retrieves the advice method infos.
*
* @param aspectQualifiedNames
* @param aspectInfos
* @param adviceInfos
* @return
*/
protected AdviceMethodInfo[] getAdviceMethodInfos(final List aspectQualifiedNames,
final Set aspectInfos,
final AdviceInfo[] adviceInfos) {
List adviceMethodInfosSet = new ArrayList();
for (int i = 0; i < adviceInfos.length; i++) {
AdviceInfo adviceInfo = adviceInfos[i];
// if we have a perinstance deployed aspect and a static member CALLER -> skip and go on
DeploymentModel deploymentModel = adviceInfo.getAdviceDefinition().getAspectDefinition()
.getDeploymentModel();
if (deploymentModel.equals(DeploymentModel.PER_INSTANCE) &&
Modifier.isStatic(m_callerMethodModifiers)) {
continue;
}
final String aspectClassName = adviceInfo.getAspectClassName().replace('.', '/');
if (!aspectQualifiedNames.contains(adviceInfo.getAspectQualifiedName())) {
aspectQualifiedNames.add(adviceInfo.getAspectQualifiedName());
}
int aspectIndex = aspectQualifiedNames.indexOf(adviceInfo.getAspectQualifiedName());
AdviceMethodInfo adviceMethodInfo = new AdviceMethodInfo(
adviceInfo,
ASPECT_FIELD_PREFIX + aspectIndex,
aspectClassName,
L + aspectClassName + SEMICOLON,
m_callerClassSignature,
m_calleeClassSignature,
m_joinPointClassName,
m_calleeMemberDesc
);
adviceMethodInfosSet.add(adviceMethodInfo);
aspectInfos.add(adviceMethodInfo.getAspectInfo());
}
return (AdviceMethodInfo[]) adviceMethodInfosSet.toArray(new AdviceMethodInfo[adviceMethodInfosSet.size()]);
}
/**
* Creates join point specific fields.
*/
protected abstract void createJoinPointSpecificFields();
/**
* Creates the signature for the join point.
*
* @param cv
*/
protected abstract void createSignature(final CodeVisitor cv);
/**
* Optimized implementation that does not retrieve the parameters from the join point instance but is passed
* directly to the method from the input parameters in the 'invoke' method. Can only be used if no around advice
* exists.
*
* @param cv
* @param argStartIndex index on stack of first target method arg (0 or 1, depends of static target or not)
*/
protected abstract void createInlinedJoinPointInvocation(final CodeVisitor cv,
final boolean isOptimizedJoinPoint,
final int argStartIndex,
final int joinPointIndex);
/**
* Creates a call to the target join point, the parameter(s) to the join point are retrieved from the invocation
* local join point instance.
*
* @param cv
*/
protected abstract void createJoinPointInvocation(final CodeVisitor cv);
/**
* Returns the join points return type.
*
* @return
*/
protected abstract Type getJoinPointReturnType();
/**
* Returns the join points argument type(s).
*
* @return
*/
protected abstract Type[] getJoinPointArgumentTypes();
/**
* Creates the getRtti method
*/
protected abstract void createGetRttiMethod();
/**
* Creates the getSignature method
*/
protected abstract void createGetSignatureMethod();
/**
* Compiles a join point class, one specific class for each distinct join point. The compiled join point class
* inherits the base join point class.
*
* @return the generated, compiled and loaded join point class
*/
public byte[] compile() {
try {
// TODO: INNER CLASS OR NOT?
// flag it as a public static inner class
// Note: if <init> changes, we will need to pass the containing instance as arg0 and add a syntetic field
// int innerIndex = m_joinPointClassName.lastIndexOf('$');
// m_cw.visitInnerClass(m_joinPointClassName,
// m_joinPointClassName.substring(0, innerIndex),
// m_joinPointClassName.substring(innerIndex + 1, m_joinPointClassName.length()),
// ACC_PUBLIC + ACC_STATIC);
createClassHeader();
createMandatoryMethodInAspectModels();
createFieldsCommonToAllJoinPoints();
createJoinPointSpecificFields();
createStaticInitializer();
createClinit();
createInit();
createUtilityMethods();
createCopyMethod();
createGetSignatureMethod();
createInvokeMethod();
if (requiresProceedMethod()) {
createProceedMethod();
}
if (m_requiresJoinPoint) {
createGetRttiMethod();
}
createCustomProceedMethods();
m_cw.visitEnd();
if (DUMP_JIT_CLASSES) {
AsmHelper.dumpClass(DUMP_DIR, m_joinPointClassName, m_cw);
}
return m_cw.toByteArray();
} catch (Exception e) {
e.printStackTrace();
StringBuffer buf = new StringBuffer();
buf.append("could not compile join point instance for join point with hash [");
buf.append(m_joinPointHash);
buf.append("] and declaring class [");
buf.append(m_callerClassName);
buf.append("] due to: ");
if (e instanceof InvocationTargetException) {
buf.append(((InvocationTargetException) e).getTargetException().toString());
} else {
buf.append(e.toString());
}
throw new RuntimeException(buf.toString());
}
}
/**
* Creates join point specific fields.
*/
protected void createFieldsCommonToAllJoinPoints() {
if (m_returnType.getSort() != Type.VOID) {
m_cw.visitField(ACC_PRIVATE, RETURN_VALUE_FIELD_NAME, m_returnType.getDescriptor(), null, null);
}
m_cw.visitField(
ACC_PRIVATE + ACC_STATIC,
TARGET_CLASS_FIELD_NAME,
CLASS_CLASS_SIGNATURE,
null,
null
);
m_cw.visitField(
ACC_PRIVATE + ACC_STATIC + ACC_FINAL,
THIS_CLASS_FIELD_NAME,
CLASS_CLASS_SIGNATURE,
null,
null
);
m_cw.visitField(
ACC_PRIVATE + ACC_STATIC + ACC_FINAL,
ENCLOSING_SJP_FIELD_NAME,
ENCLOSING_SJP_FIELD_CLASS_SIGNATURE,
null,
null
);
m_cw.visitField(ACC_PRIVATE + ACC_STATIC, META_DATA_FIELD_NAME, MAP_CLASS_SIGNATURE, null, null);
m_cw.visitField(
ACC_PRIVATE + ACC_STATIC,
OPTIMIZED_JOIN_POINT_INSTANCE_FIELD_NAME,
L + m_joinPointClassName + SEMICOLON,
null, null
);
m_cw.visitField(ACC_PRIVATE, CALLEE_INSTANCE_FIELD_NAME, m_calleeClassSignature, null, null);
m_cw.visitField(ACC_PRIVATE, CALLER_INSTANCE_FIELD_NAME, m_callerClassSignature, null, null);
m_cw.visitField(ACC_PRIVATE, STACK_FRAME_COUNTER_FIELD_NAME, I, null, null);
if (m_isThisAdvisable) {
m_cw.visitField(ACC_PRIVATE, INTERCEPTOR_INDEX_FIELD_NAME, I, null, null);
m_cw.visitField(
ACC_PRIVATE, AROUND_INTERCEPTORS_FIELD_NAME,
AROUND_ADVICE_ARRAY_CLASS_SIGNATURE, null, null
);
m_cw.visitField(ACC_PRIVATE, NR_OF_AROUND_INTERCEPTORS_FIELD_NAME, I, null, null);
m_cw.visitField(
ACC_PRIVATE, BEFORE_INTERCEPTORS_FIELD_NAME,
BEFORE_ADVICE_ARRAY_CLASS_SIGNATURE, null, null
);
m_cw.visitField(ACC_PRIVATE, NR_OF_BEFORE_INTERCEPTORS_FIELD_NAME, I, null, null);
m_cw.visitField(
ACC_PRIVATE, AFTER_INTERCEPTORS_FIELD_NAME,
AFTER_ADVICE_ARRAY_CLASS_SIGNATURE, null, null
);
m_cw.visitField(ACC_PRIVATE, NR_OF_AFTER_INTERCEPTORS_FIELD_NAME, I, null, null);
m_cw.visitField(
ACC_PRIVATE, AFTER_RETURNING_INTERCEPTORS_FIELD_NAME,
AFTER_RETURNING_ADVICE_ARRAY_CLASS_SIGNATURE, null, null
);
m_cw.visitField(ACC_PRIVATE, NR_OF_AFTER_RETURNING_INTERCEPTORS_FIELD_NAME, I, null, null);
m_cw.visitField(
ACC_PRIVATE, AFTER_THROWING_INTERCEPTORS_FIELD_NAME,
AFTER_THROWING_ADVICE_ARRAY_CLASS_SIGNATURE, null, null
);
m_cw.visitField(ACC_PRIVATE, NR_OF_AFTER_THROWING_INTERCEPTORS_FIELD_NAME, I, null, null);
}
}
/**
* Creates the clinit method for the join point.
*/
protected void createClinit() {
CodeVisitor cv = m_cw.visitMethod(ACC_STATIC, CLINIT_METHOD_NAME, NO_PARAM_RETURN_VOID_SIGNATURE, null, null);
cv.visitMethodInsn(
INVOKESTATIC, m_joinPointClassName,
STATIC_INITIALIZATION_METHOD_NAME, NO_PARAM_RETURN_VOID_SIGNATURE
);
cv.visitInsn(RETURN);
cv.visitMaxs(0, 0);
}
/**
* Creates the init method for the join point.
*/
protected void createInit() {
CodeVisitor cv = m_cw.visitMethod(ACC_PRIVATE, INIT_METHOD_NAME, NO_PARAM_RETURN_VOID_SIGNATURE, null, null);
cv.visitVarInsn(ALOAD, 0);
boolean hasAroundClosureBaseClass = false;
AspectModel aspectModel = null;
for (int i = 0; i < m_aspectModels.length; i++) {
aspectModel = m_aspectModels[i];
if (aspectModel.getAroundClosureClassInfo().getSuperClassName() != null) {
hasAroundClosureBaseClass = true;
break;
}
}
if (hasAroundClosureBaseClass) {
// invoke the super class constructor
aspectModel.createInvocationOfAroundClosureSuperClass(cv);
} else {
// invoke the constructor of java.lang.Object
cv.visitMethodInsn(INVOKESPECIAL, OBJECT_CLASS_NAME, INIT_METHOD_NAME, NO_PARAM_RETURN_VOID_SIGNATURE);
}
resetStackFrameCounter(cv);
cv.visitInsn(RETURN);
cv.visitMaxs(0, 0);
}
/**
* Creates the class header for the join point.
*/
private void createClassHeader() {
Set interfaces = new HashSet();
String baseClass = OBJECT_CLASS_NAME;
// get the different aspect models required interfaces
for (int i = 0; i < m_aspectModels.length; i++) {
AspectModel aspectModel = m_aspectModels[i];
AspectModel.AroundClosureClassInfo closureClassInfo = aspectModel.getAroundClosureClassInfo();
final String superClassName = closureClassInfo.getSuperClassName();
final String[] interfaceNames = closureClassInfo.getInterfaceNames();
if (superClassName != null) {
if (!baseClass.equals(OBJECT_CLASS_NAME)) {
throw new RuntimeException(
"compiled join point can only subclass one around closure base class but more than registered aspect model requires a closure base class"
);
}
baseClass = superClassName;
}
if (interfaceNames.length != 0) {
for (int j = 0; j < interfaceNames.length; j++) {
interfaces.add(interfaceNames[j]);
}
}
}
// get the custom join point interfaces
for (Iterator it = m_customProceedMethodStructs.iterator(); it.hasNext();) {
MethodInfo methodInfo = ((CustomProceedMethodStruct) it.next()).customProceed;
interfaces.add(methodInfo.getDeclaringType().getName().replace('.', '/'));
}
int i = 1;
String[] interfaceArr = new String[interfaces.size() + 1];
interfaceArr[0] = getJoinPointInterface();
for (Iterator it = interfaces.iterator(); it.hasNext(); i++) {
interfaceArr[i] = (String) it.next();
}
m_cw.visit(
AsmHelper.JAVA_VERSION,
ACC_PUBLIC + ACC_SUPER,
m_joinPointClassName,
baseClass,
interfaceArr,
null
);
}
/**
* Creates the methods that are mandatory methods in the around closure in the different aspect models.
*/
private void createMandatoryMethodInAspectModels() {
for (int i = 0; i < m_aspectModels.length; i++) {
m_aspectModels[i].createMandatoryMethods(m_cw, m_joinPointClassName);
}
}
/**
* Creates the custom proceed methods.
*/
private void createCustomProceedMethods() {
Set addedMethodSignatures = new HashSet();
for (Iterator it = m_customProceedMethodStructs.iterator(); it.hasNext();) {
CustomProceedMethodStruct customProceedStruct = (CustomProceedMethodStruct) it.next();
MethodInfo methodInfo = customProceedStruct.customProceed;
final String desc = methodInfo.getSignature();
if (addedMethodSignatures.contains(desc)) {
continue;
}
addedMethodSignatures.add(desc);
CodeVisitor cv = m_cw.visitMethod(
ACC_PUBLIC | ACC_FINAL,
PROCEED_METHOD_NAME,
desc,
new String[]{
THROWABLE_CLASS_NAME
},
null
);
// update the joinpoint instance with the given values
// starts at 1 since first arg is the custom join point by convention
//TODO see JoinPointManage for this custom jp is first convention
int argStackIndex = 1;
for (int i = 1; i < customProceedStruct.adviceToTargetArgs.length; i++) {
int targetArg = customProceedStruct.adviceToTargetArgs[i];
if (targetArg >= 0) {
// regular arg
String fieldName = m_fieldNames[targetArg];
cv.visitVarInsn(ALOAD, 0);
Type type = m_argumentTypes[targetArg];
argStackIndex = AsmHelper.loadType(cv, argStackIndex, type);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, fieldName, type.getDescriptor());
} else if (targetArg == AdviceInfo.TARGET_ARG) {
cv.visitVarInsn(ALOAD, 0);
argStackIndex = AsmHelper.loadType(cv, argStackIndex, Type.getType(m_calleeClassSignature));
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, CALLEE_INSTANCE_FIELD_NAME, m_calleeClassSignature);
} else if (targetArg == AdviceInfo.THIS_ARG) {
cv.visitVarInsn(ALOAD, 0);
argStackIndex = AsmHelper.loadType(cv, argStackIndex, Type.getType(m_callerClassSignature));
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, CALLER_INSTANCE_FIELD_NAME, m_callerClassSignature);
} else {
;//skip it
}
}
// call proceed()
// and handles unwrapping for returning primitive
Type returnType = Type.getType(customProceedStruct.customProceed.getReturnType().getSignature());
if (AsmHelper.isPrimitive(returnType)) {
cv.visitVarInsn(ALOAD, 0);
cv.visitMethodInsn(
INVOKESPECIAL,
m_joinPointClassName,
PROCEED_METHOD_NAME,
PROCEED_METHOD_SIGNATURE
);
AsmHelper.unwrapType(cv, returnType);
} else {
cv.visitVarInsn(ALOAD, 0);
cv.visitMethodInsn(
INVOKESPECIAL,
m_joinPointClassName,
PROCEED_METHOD_NAME,
PROCEED_METHOD_SIGNATURE
);
if (!returnType.getClassName().equals(OBJECT_CLASS_SIGNATURE)) {
cv.visitTypeInsn(CHECKCAST, returnType.getInternalName());
}
}
AsmHelper.addReturnStatement(cv, returnType);
cv.visitMaxs(0, 0);
}
}
/**
* Creates the static initialization method (not clinit) for the join point.
*/
protected void createStaticInitializer() {
CodeVisitor cv = m_cw.visitMethod(
ACC_STATIC | ACC_PUBLIC,
STATIC_INITIALIZATION_METHOD_NAME,
NO_PARAM_RETURN_VOID_SIGNATURE,
null, null
);
Label tryLabel = new Label();
cv.visitLabel(tryLabel);
cv.visitLdcInsn(m_calleeClassName.replace('/', '.'));
cv.visitMethodInsn(INVOKESTATIC, CLASS_CLASS, FOR_NAME_METHOD_NAME, FOR_NAME_METHOD_SIGNATURE);
cv.visitFieldInsn(PUTSTATIC, m_joinPointClassName, TARGET_CLASS_FIELD_NAME, CLASS_CLASS_SIGNATURE);
cv.visitLdcInsn(m_callerClassName.replace('/', '.'));
cv.visitMethodInsn(INVOKESTATIC, CLASS_CLASS, FOR_NAME_METHOD_NAME, FOR_NAME_METHOD_SIGNATURE);
cv.visitFieldInsn(PUTSTATIC, m_joinPointClassName, THIS_CLASS_FIELD_NAME, CLASS_CLASS_SIGNATURE);
Label finallyLabel = new Label();
cv.visitLabel(finallyLabel);
Label gotoFinallyLabel = new Label();
cv.visitJumpInsn(GOTO, gotoFinallyLabel);
Label catchLabel = new Label();
cv.visitLabel(catchLabel);
cv.visitVarInsn(ASTORE, 0);
cv.visitVarInsn(ALOAD, 0);
cv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Throwable", "printStackTrace", "()V");
cv.visitTypeInsn(NEW, RUNTIME_EXCEPTION_CLASS_NAME);
cv.visitInsn(DUP);
cv.visitLdcInsn("could not load target class using Class.forName() in generated join point base class "
+ m_joinPointClassName);
cv.visitMethodInsn(
INVOKESPECIAL,
RUNTIME_EXCEPTION_CLASS_NAME,
INIT_METHOD_NAME,
RUNTIME_EXCEPTION_INIT_METHOD_SIGNATURE
);
cv.visitInsn(ATHROW);
cv.visitLabel(gotoFinallyLabel);
// create the enclosing static joinpoint
createEnclosingStaticJoinPoint(cv);
// create the metadata map
cv.visitTypeInsn(NEW, HASH_MAP_CLASS_NAME);
cv.visitInsn(DUP);
cv.visitMethodInsn(INVOKESPECIAL, HASH_MAP_CLASS_NAME, INIT_METHOD_NAME, NO_PARAM_RETURN_VOID_SIGNATURE);
cv.visitFieldInsn(PUTSTATIC, m_joinPointClassName, META_DATA_FIELD_NAME, MAP_CLASS_SIGNATURE);
// create the Signature instance
createSignature(cv);
// create the static JoinPoint instance
cv.visitTypeInsn(NEW, m_joinPointClassName);
cv.visitInsn(DUP);
cv.visitMethodInsn(INVOKESPECIAL, m_joinPointClassName, INIT_METHOD_NAME, NO_PARAM_RETURN_VOID_SIGNATURE);
cv.visitFieldInsn(
PUTSTATIC,
m_joinPointClassName,
OPTIMIZED_JOIN_POINT_INSTANCE_FIELD_NAME,
L + m_joinPointClassName + SEMICOLON
);
// create and initialize the aspect fields
for (int i = 0; i < m_aspectInfos.length; i++) {
createAndInitializeAspectField(m_aspectInfos[i], cv);
}
cv.visitInsn(RETURN);
cv.visitTryCatchBlock(tryLabel, finallyLabel, catchLabel, CLASS_NOT_FOUND_EXCEPTION_CLASS_NAME);
cv.visitMaxs(0, 0);
}
/**
* Add and initialize the static field for enclosing joint point static part
*
* @param cv
*/
protected void createEnclosingStaticJoinPoint(CodeVisitor cv) {
cv.visitFieldInsn(GETSTATIC,
m_joinPointClassName,
THIS_CLASS_FIELD_NAME,
CLASS_CLASS_SIGNATURE);
cv.visitLdcInsn(m_callerMethodName);
cv.visitLdcInsn(m_callerMethodDesc);
cv.visitMethodInsn(INVOKESTATIC,
SIGNATURE_FACTORY_CLASS,
NEW_ENCLOSING_SJP_METHOD_NAME,
NEW_ENCLOSING_SJP_METHOD_SIGNATURE);
cv.visitFieldInsn(
PUTSTATIC,
m_joinPointClassName,
ENCLOSING_SJP_FIELD_NAME,
ENCLOSING_SJP_FIELD_CLASS_SIGNATURE);
}
/**
* Create and initialize the aspect field for a specific aspect (qualified since it depends
* on the param, deployment model, container etc).
*
* @param aspectInfo
* @param cv
*/
protected boolean createAndInitializeAspectField(final AspectInfo aspectInfo, final CodeVisitor cv) {
if (aspectInfo.getAspectDefinition().isAspectWerkzAspect()) {
// AW aspect
// create the field to host the aspect and retrieve the aspect to set it to the field
createAspectReferenceField(m_cw, aspectInfo);
createAspectInstantiation(cv, aspectInfo, m_joinPointClassName);
} else {
// non-AW aspect
final String type = aspectInfo.getAspectDefinition().getAspectModel();
final AspectModel aspectModel = AspectModelManager.getModelFor(type);
aspectModel.createAspectReferenceField(m_cw, aspectInfo, m_joinPointClassName);
aspectModel.createAspectInstantiation(cv, aspectInfo, m_joinPointClassName);
}
return false;
}
/**
* Creates aspect reference field (static or non static field).
*
* @param cw
* @param aspectInfo
*/
public static void createAspectReferenceField(final ClassWriter cw,
final AspectInfo aspectInfo) {
String aspectClassSignature = aspectInfo.getAspectClassSignature();
// create a field depending on the aspect deployment model
DeploymentModel deploymentModel = aspectInfo.getDeploymentModel();
if (deploymentModel.equals(DeploymentModel.PER_JVM) ||
deploymentModel.equals(DeploymentModel.PER_CLASS)) {
// add the aspect static field
cw.visitField(ACC_PRIVATE + ACC_STATIC, aspectInfo.getAspectFieldName(), aspectClassSignature, null, null);
} else if (deploymentModel.equals(DeploymentModel.PER_INSTANCE)) {
// add the aspect field as a non static field
//TODO - may bee skip the aspect and all its advice is target is static, or ctor call
//that is no instance available
cw.visitField(ACC_PRIVATE, aspectInfo.getAspectFieldName(), aspectClassSignature, null, null);
} else {
throw new UnsupportedOperationException(
"unsupported deployment model - " +
aspectInfo.getAspectClassName() + " " +
deploymentModel
);
}
}
/**
* Creates instantiation of aspects using the Aspects.aspectOf() methods which uses the AspectContainer impls.
* We are using the THIS_CLASS classloader since the aspect can be visible from that one only f.e. for get/set/call
*
* @param cv
* @param aspectInfo
* @param joinPointClassName
*/
public static void createAspectInstantiation(final CodeVisitor cv,
final AspectInfo aspectInfo,
final String joinPointClassName) {
String aspectClassSignature = aspectInfo.getAspectClassSignature();
String aspectClassName = aspectInfo.getAspectClassName();
// retrieve the aspect set it to the field
DeploymentModel deploymentModel = aspectInfo.getDeploymentModel();
if (CflowCompiler.isCflowClass(aspectClassName)) {
// handle Cflow native aspectOf
cv.visitMethodInsn(
INVOKESTATIC,
aspectClassName,
CflowCompiler.CFLOW_ASPECTOF_METHOD_NAME,
"()"+aspectClassSignature
);
cv.visitFieldInsn(PUTSTATIC, joinPointClassName, aspectInfo.getAspectFieldName(), aspectClassSignature);
} else if (deploymentModel.equals(DeploymentModel.PER_JVM)) {
// AW-355, AW-415 we need a ClassLoader here
cv.visitFieldInsn(GETSTATIC, joinPointClassName, THIS_CLASS_FIELD_NAME, CLASS_CLASS_SIGNATURE);
cv.visitMethodInsn(
INVOKEVIRTUAL, CLASS_CLASS, GETCLASSLOADER_METHOD_NAME,
CLASS_CLASS_GETCLASSLOADER_METHOD_SIGNATURE
);
cv.visitLdcInsn(aspectInfo.getAspectQualifiedName());
cv.visitLdcInsn(aspectInfo.getAspectDefinition().getContainerClassName());
cv.visitMethodInsn(
INVOKESTATIC,
ASPECTS_CLASS_NAME,
ASPECT_OF_METHOD_NAME,
ASPECT_OF_PER_JVM_METHOD_SIGNATURE
);
cv.visitTypeInsn(CHECKCAST, aspectClassName);
cv.visitFieldInsn(PUTSTATIC, joinPointClassName, aspectInfo.getAspectFieldName(), aspectClassSignature);
} else if (deploymentModel.equals(DeploymentModel.PER_CLASS)) {
cv.visitLdcInsn(aspectInfo.getAspectQualifiedName());
cv.visitLdcInsn(aspectInfo.getAspectDefinition().getContainerClassName());
cv.visitFieldInsn(GETSTATIC, joinPointClassName, THIS_CLASS_FIELD_NAME, CLASS_CLASS_SIGNATURE);
cv.visitMethodInsn(
INVOKESTATIC,
ASPECTS_CLASS_NAME,
ASPECT_OF_METHOD_NAME,
ASPECT_OF_PER_CLASS_METHOD_SIGNATURE
);
cv.visitTypeInsn(CHECKCAST, aspectClassName);
cv.visitFieldInsn(PUTSTATIC, joinPointClassName, aspectInfo.getAspectFieldName(), aspectClassSignature);
} else if (deploymentModel.equals(DeploymentModel.PER_INSTANCE)) {
} else {
throw new UnsupportedOperationException(
"unsupported deployment model - " +
aspectInfo.getAspectClassName() + " " +
deploymentModel
);
}
}
/**
* Creates the 'invoke' method. If possible delegates to the target join point directly, e.g. does not invoke the
* 'proceed' method (Used when a join point has zero around advice).
*/
protected void createInvokeMethod() {
final String invokeDesc = buildInvokeMethodSignature();
// create the method
CodeVisitor cv = m_cw.visitMethod(
ACC_PUBLIC + ACC_FINAL + ACC_STATIC,
INVOKE_METHOD_NAME,
invokeDesc,
new String[]{
THROWABLE_CLASS_NAME
},
null
);
// compute the callee and caller index from the invoke(..) signature
int calleeIndex = INDEX_NOTAVAILABLE;
int argStartIndex = 0;
if (!Modifier.isStatic(m_calleeMemberModifiers) &&
m_joinPointType != JoinPointType.CONSTRUCTOR_CALL_INT &&
m_joinPointType != JoinPointType.HANDLER_INT) {
calleeIndex = 0;
argStartIndex++;
} else {
calleeIndex = INDEX_NOTAVAILABLE;// no callee in the invoke(..) parameters
}
int callerIndex = argStartIndex + AsmHelper.getRegisterDepth(m_argumentTypes);
// custom logic overrides for handler jp
if (m_joinPointType == JoinPointType.HANDLER_INT) {
calleeIndex = 0;
callerIndex = 2;
argStartIndex = 1;
}
// do we need to keep track of CALLEE, ARGS etc, if not then completely skip it
// and make use of the optimized join point instance
// while not using its fields (does not support reentrancy and thread safety)
final boolean isOptimizedJoinPoint = !m_requiresJoinPoint && !requiresProceedMethod();
int joinPointIndex = INDEX_NOTAVAILABLE;
if (!isOptimizedJoinPoint) {
// create a new JP and makes use of it
joinPointIndex = callerIndex + 1;
createInvocationLocalJoinPointInstance(cv, argStartIndex, joinPointIndex, callerIndex, calleeIndex);
}
// initialize the instance level aspects (perInstance)
initializeInstanceLevelAspects(cv, isOptimizedJoinPoint, joinPointIndex, callerIndex, calleeIndex);
// before advices
createBeforeAdviceInvocations(
cv, isOptimizedJoinPoint, argStartIndex, joinPointIndex, callerIndex, calleeIndex
);
// handle different combinations of after advice (finally/throwing/returning)
if (m_afterFinallyAdviceMethodInfos.length == 0 &&
m_afterThrowingAdviceMethodInfos.length == 0 &&
!m_isThisAdvisable) {
createPartOfInvokeMethodWithoutAfterFinallyAndAfterThrowingAdviceTypes(
cv, isOptimizedJoinPoint, joinPointIndex, argStartIndex, callerIndex, calleeIndex
);
} else if (m_afterThrowingAdviceMethodInfos.length == 0 &&
!m_isThisAdvisable) {
createPartOfInvokeMethodWithoutAfterThrowingAdviceTypes(
cv, isOptimizedJoinPoint, joinPointIndex, argStartIndex, callerIndex, calleeIndex
);
} else {
createPartOfInvokeMethodWithAllAdviceTypes(
cv, OPTIMIZED_JOIN_POINT, joinPointIndex, argStartIndex, callerIndex, calleeIndex
);
}
cv.visitMaxs(0, 0);
}
/**
* Initializes instance level aspects, retrieves them from the target instance through the
* <code>HasInstanceLevelAspect</code> interfaces.
* <p/>
* Use by 'perInstance', 'perThis' and 'perTarget' deployment models.
*
* @param cv
* @param isOptimizedJoinPoint
* @param joinPointIndex
* @param callerIndex
* @param calleeIndex
*/
protected void initializeInstanceLevelAspects(final CodeVisitor cv,
final boolean isOptimizedJoinPoint,
final int joinPointIndex,
final int callerIndex,
final int calleeIndex) {
for (int i = 0; i < m_aspectInfos.length; i++) {
AspectInfo aspectInfo = m_aspectInfos[i];
if (aspectInfo.getDeploymentModel() == DeploymentModel.PER_INSTANCE) {
// gen code: aspectField = (<TYPE>)((HasInstanceLocalAspect)CALLER).aw$getAspect(className, qualifiedName, containerClassName)
loadJoinPointInstance(cv, isOptimizedJoinPoint, joinPointIndex);
if (callerIndex >= 0) {
cv.visitVarInsn(ALOAD, callerIndex);
} else {
// caller instance not available - skipping
//TODO clean up should not occur
}
cv.visitLdcInsn(aspectInfo.getAspectClassName().replace('/', '.'));
cv.visitLdcInsn(aspectInfo.getAspectQualifiedName());
cv.visitLdcInsn(aspectInfo.getAspectDefinition().getContainerClassName());
cv.visitMethodInsn(
INVOKEINTERFACE,
HAS_INSTANCE_LEVEL_ASPECT_INTERFACE_NAME,
GET_INSTANCE_LEVEL_ASPECT_METHOD_NAME,
GET_INSTANCE_LEVEL_ASPECT_METHOD_SIGNATURE
);
cv.visitTypeInsn(CHECKCAST, aspectInfo.getAspectClassName());
cv.visitFieldInsn(
PUTFIELD,
m_joinPointClassName,
aspectInfo.getAspectFieldName(),
aspectInfo.getAspectClassSignature()
);
}
}
}
/**
* @param cv
* @param isOptimizedJoinPoint
* @param joinPointInstanceIndex
* @param argStartIndex
* @param callerIndex
* @param calleeIndex
*/
protected void createPartOfInvokeMethodWithAllAdviceTypes(final CodeVisitor cv,
final boolean isOptimizedJoinPoint,
final int joinPointInstanceIndex,
final int argStartIndex,
final int callerIndex,
final int calleeIndex) {
final int returnValueIndex = (joinPointInstanceIndex != INDEX_NOTAVAILABLE) ?
(joinPointInstanceIndex + 1) : callerIndex + 1;
final int exceptionIndex1 = returnValueIndex + 1;
final int exceptionIndex2 = returnValueIndex + 2;
cv.visitInsn(ACONST_NULL);
cv.visitVarInsn(ASTORE, returnValueIndex);
Label tryLabel = new Label();
cv.visitLabel(tryLabel);
if (!requiresProceedMethod()) {
// if no around advice then optimize by invoking the target JP directly and no call to proceed()
createInlinedJoinPointInvocation(cv, isOptimizedJoinPoint, argStartIndex, joinPointInstanceIndex);
int stackIndex = returnValueIndex;//use another int since storeType will update it
AsmHelper.storeType(cv, stackIndex, m_returnType);
addReturnedValueToJoinPoint(cv, returnValueIndex, joinPointInstanceIndex, false);
} else {
createInvocationToProceedMethod(cv, joinPointInstanceIndex, returnValueIndex);
}
createAfterReturningAdviceInvocations(
cv, isOptimizedJoinPoint, argStartIndex, joinPointInstanceIndex,
callerIndex, calleeIndex
);
Label finallyLabel1 = new Label();
cv.visitLabel(finallyLabel1);
if (m_isThisAdvisable) {
final int registerDepth = callerIndex + 2; // caller is using last register + possible return value
createAfterInterceptorInvocations(cv, joinPointInstanceIndex, registerDepth);
}
createAfterFinallyAdviceInvocations(
cv, isOptimizedJoinPoint, argStartIndex, joinPointInstanceIndex,
callerIndex, calleeIndex
);
Label gotoFinallyLabel = new Label();
cv.visitJumpInsn(GOTO, gotoFinallyLabel);
Label catchLabel = new Label();
cv.visitLabel(catchLabel);
// store the exception
cv.visitVarInsn(ASTORE, exceptionIndex1);
if (m_isThisAdvisable) {
createAfterThrowingInterceptorInvocations(cv, joinPointInstanceIndex, exceptionIndex1);
}
// loop over the after throwing advices
for (int i = m_afterThrowingAdviceMethodInfos.length - 1; i >= 0; i--) {
AdviceMethodInfo advice = m_afterThrowingAdviceMethodInfos[i];
// set the exception argument index
advice.setSpecialArgumentIndex(exceptionIndex1);
// if (e instanceof TYPE) {...}
cv.visitVarInsn(ALOAD, exceptionIndex1);
final String specialArgTypeName = advice.getSpecialArgumentTypeName();
if (specialArgTypeName != null) {
// after throwing <TYPE>
cv.visitTypeInsn(INSTANCEOF, specialArgTypeName);
Label ifInstanceOfLabel = new Label();
cv.visitJumpInsn(IFEQ, ifInstanceOfLabel);
// after throwing advice invocation
createAfterAdviceInvocation(
cv, isOptimizedJoinPoint, advice, joinPointInstanceIndex,
argStartIndex, callerIndex, calleeIndex, exceptionIndex1
);
cv.visitLabel(ifInstanceOfLabel);
} else {
// after throwing
createAfterAdviceInvocation(
cv, isOptimizedJoinPoint, advice, joinPointInstanceIndex,
argStartIndex, callerIndex, calleeIndex, INDEX_NOTAVAILABLE
);
}
}
// rethrow exception
cv.visitVarInsn(ALOAD, exceptionIndex1);
cv.visitInsn(ATHROW);
// store exception
Label exceptionLabel = new Label();
cv.visitLabel(exceptionLabel);
cv.visitVarInsn(ASTORE, exceptionIndex2);
// after finally advice invocation
Label finallyLabel2 = new Label();
cv.visitLabel(finallyLabel2);
if (m_isThisAdvisable) {
final int registerDepth = callerIndex + 2; // caller is using last register + possible return value
createAfterInterceptorInvocations(cv, joinPointInstanceIndex, registerDepth);
}
createAfterFinallyAdviceInvocations(
cv, isOptimizedJoinPoint, argStartIndex, joinPointInstanceIndex,
callerIndex, calleeIndex
);
// rethrow exception
cv.visitVarInsn(ALOAD, exceptionIndex2);
cv.visitInsn(ATHROW);
cv.visitLabel(gotoFinallyLabel);
// unwrap if around advice and return in all cases
if (m_returnType.getSort() != Type.VOID) {
if (requiresProceedMethod()) {
cv.visitVarInsn(ALOAD, returnValueIndex);
AsmHelper.unwrapType(cv, m_returnType);
} else {
AsmHelper.loadType(cv, returnValueIndex, m_returnType);
}
}
AsmHelper.addReturnStatement(cv, m_returnType);
// build up the exception table
cv.visitTryCatchBlock(tryLabel, finallyLabel1, catchLabel, THROWABLE_CLASS_NAME);
cv.visitTryCatchBlock(tryLabel, finallyLabel1, exceptionLabel, null);
cv.visitTryCatchBlock(catchLabel, finallyLabel2, exceptionLabel, null);
}
/**
* @param cv
* @param isOptimizedJoinPoint
* @param joinPointInstanceIndex
* @param argStartIndex
* @param callerIndex
* @param calleeIndex
*/
protected void createPartOfInvokeMethodWithoutAfterThrowingAdviceTypes(final CodeVisitor cv,
final boolean isOptimizedJoinPoint,
final int joinPointInstanceIndex,
final int argStartIndex,
final int callerIndex,
final int calleeIndex) {
final int returnValueIndex = (joinPointInstanceIndex != INDEX_NOTAVAILABLE) ?
(joinPointInstanceIndex + 1) : callerIndex + 1;
final int exceptionIndex = returnValueIndex + 1;
cv.visitInsn(ACONST_NULL);
cv.visitVarInsn(ASTORE, returnValueIndex);
Label tryLabel = new Label();
cv.visitLabel(tryLabel);
if (!requiresProceedMethod()) {
// if no around advice then optimize by invoking the target JP directly and no call to proceed()
createInlinedJoinPointInvocation(cv, isOptimizedJoinPoint, argStartIndex, joinPointInstanceIndex);
int stackIndex = returnValueIndex;//use another int since storeType will update it
AsmHelper.storeType(cv, stackIndex, m_returnType);
addReturnedValueToJoinPoint(cv, returnValueIndex, joinPointInstanceIndex, false);
} else {
createInvocationToProceedMethod(cv, joinPointInstanceIndex, returnValueIndex);
}
createAfterReturningAdviceInvocations(
cv, isOptimizedJoinPoint, argStartIndex, joinPointInstanceIndex,
callerIndex, calleeIndex
);
Label finallyLabel1 = new Label();
cv.visitLabel(finallyLabel1);
createAfterFinallyAdviceInvocations(
cv, isOptimizedJoinPoint, argStartIndex, joinPointInstanceIndex,
callerIndex, calleeIndex
);
Label gotoFinallyLabel = new Label();
cv.visitJumpInsn(GOTO, gotoFinallyLabel);
Label exceptionLabel = new Label();
cv.visitLabel(exceptionLabel);
cv.visitVarInsn(ASTORE, exceptionIndex);
Label finallyLabel2 = new Label();
cv.visitLabel(finallyLabel2);
createAfterFinallyAdviceInvocations(
cv, isOptimizedJoinPoint, argStartIndex, joinPointInstanceIndex,
callerIndex, calleeIndex
);
cv.visitVarInsn(ALOAD, exceptionIndex);
cv.visitInsn(ATHROW);
cv.visitLabel(gotoFinallyLabel);
// unwrap if around advice and return in all cases
if (m_returnType.getSort() != Type.VOID) {
if (requiresProceedMethod()) {
cv.visitVarInsn(ALOAD, returnValueIndex);
AsmHelper.unwrapType(cv, m_returnType);
} else {
AsmHelper.loadType(cv, returnValueIndex, m_returnType);
}
}
AsmHelper.addReturnStatement(cv, m_returnType);
cv.visitTryCatchBlock(tryLabel, finallyLabel1, exceptionLabel, null);
cv.visitTryCatchBlock(exceptionLabel, finallyLabel2, exceptionLabel, null);
}
/**
* @param cv
* @param isOptimizedJoinPoint
* @param joinPointInstanceIndex
* @param argStartIndex
* @param callerIndex
* @param calleeIndex
*/
protected void createPartOfInvokeMethodWithoutAfterFinallyAndAfterThrowingAdviceTypes(final CodeVisitor cv,
final boolean isOptimizedJoinPoint,
final int joinPointInstanceIndex,
final int argStartIndex,
final int callerIndex,
final int calleeIndex) {
final int returnValueIndex = (joinPointInstanceIndex != INDEX_NOTAVAILABLE) ?
(joinPointInstanceIndex + 1) : callerIndex + 1;
if (!requiresProceedMethod()) {
// if no around advice then optimize by invoking the target JP directly and no call to proceed()
createInlinedJoinPointInvocation(cv, isOptimizedJoinPoint, argStartIndex, joinPointInstanceIndex);
int stackIndex = returnValueIndex;//use another int since storeType will update it
AsmHelper.storeType(cv, stackIndex, m_returnType);
addReturnedValueToJoinPoint(cv, returnValueIndex, joinPointInstanceIndex, false);
} else {
createInvocationToProceedMethod(cv, joinPointInstanceIndex, returnValueIndex);
}
// after returning advice invocations
createAfterReturningAdviceInvocations(
cv, isOptimizedJoinPoint, argStartIndex, joinPointInstanceIndex,
callerIndex, calleeIndex
);
// unwrap if around advice and return in all cases
if (m_returnType.getSort() != Type.VOID) {
if (requiresProceedMethod()) {
cv.visitVarInsn(ALOAD, returnValueIndex);
AsmHelper.unwrapType(cv, m_returnType);
} else {
AsmHelper.loadType(cv, returnValueIndex, m_returnType);
}
}
AsmHelper.addReturnStatement(cv, m_returnType);
}
/**
* Creates an invocation to the proceed method.
*
* @param cv
* @param joinPointInstanceIndex
* @param returnValueIndex
*/
protected void createInvocationToProceedMethod(final CodeVisitor cv,
final int joinPointInstanceIndex,
final int returnValueIndex) {
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitMethodInsn(INVOKEVIRTUAL, m_joinPointClassName, PROCEED_METHOD_NAME, PROCEED_METHOD_SIGNATURE);
cv.visitVarInsn(ASTORE, returnValueIndex);
}
/**
* Creates an "invocation local" join point instance, e.g. one join point per invocation. Needed for thread-safety
* when invoking around advice.
*
* @param cv
* @param argStartIndex index on stack of first target method arg (0 or 1, depends of static target or
* not)
* @param joinPointInstanceIndex
* @param callerIndex
* @param calleeIndex
*/
protected void createInvocationLocalJoinPointInstance(final CodeVisitor cv,
final int argStartIndex,
final int joinPointInstanceIndex,
final int callerIndex,
final int calleeIndex) {
// create the join point instance
cv.visitTypeInsn(NEW, m_joinPointClassName);
cv.visitInsn(DUP);
cv.visitMethodInsn(INVOKESPECIAL, m_joinPointClassName, INIT_METHOD_NAME, NO_PARAM_RETURN_VOID_SIGNATURE);
// store the jp on the stack
cv.visitVarInsn(ASTORE, joinPointInstanceIndex);
// set the argument fields in the join point instance (jp.m_arg<i> = <arg_i>)
int argStackIndex = argStartIndex;
for (int i = 0; i < m_fieldNames.length; i++) {
String fieldName = m_fieldNames[i];
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
Type type = m_argumentTypes[i];
argStackIndex = AsmHelper.loadType(cv, argStackIndex, type);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, fieldName, type.getDescriptor());
}
// caller (can be assigned to null)
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitVarInsn(ALOAD, callerIndex);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, CALLER_INSTANCE_FIELD_NAME, m_callerClassSignature);
// callee (can be not available)
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
if (calleeIndex != INDEX_NOTAVAILABLE) {
cv.visitVarInsn(ALOAD, 0);
} else {
cv.visitInsn(ACONST_NULL);
}
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, CALLEE_INSTANCE_FIELD_NAME, m_calleeClassSignature);
if (m_isThisAdvisable) {
createInitializationForAdvisableManagement(cv, joinPointInstanceIndex, callerIndex);
}
}
/**
* Create the proceed() method.
*/
protected void createProceedMethod() {
CodeVisitor cv = m_cw.visitMethod(
ACC_PUBLIC | ACC_FINAL,
PROCEED_METHOD_NAME,
PROCEED_METHOD_SIGNATURE,
new String[]{
THROWABLE_CLASS_NAME
},
null
);
if (m_isThisAdvisable) {
createAroundInterceptorInvocations(cv);
}
incrementStackFrameCounter(cv);
// set up the labels
Label tryLabel = new Label();
Label defaultCaseLabel = new Label();
Label gotoLabel = new Label();
Label handlerLabel = new Label();
Label endLabel = new Label();
int nrOfCases = m_aroundAdviceMethodInfos.length;
if (m_isThisAdvisable) {
nrOfCases++;
}
Label[] caseLabels = new Label[nrOfCases];
Label[] returnLabels = new Label[nrOfCases];
int[] caseNumbers = new int[nrOfCases];
for (int i = 0; i < caseLabels.length; i++) {
caseLabels[i] = new Label();
caseNumbers[i] = i;
}
for (int i = 0; i < returnLabels.length; i++) {
returnLabels[i] = new Label();
}
// start try-catch block
cv.visitLabel(tryLabel);
// start the switch block and set the stackframe as the param to the switch
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, STACK_FRAME_COUNTER_FIELD_NAME, I);
cv.visitLookupSwitchInsn(defaultCaseLabel, caseNumbers, caseLabels);
// add one case for each around advice invocation
for (int i = 0; i < m_aroundAdviceMethodInfos.length; i++) {
cv.visitLabel(caseLabels[i]);
// gather advice info
AdviceMethodInfo adviceInfo = m_aroundAdviceMethodInfos[i];
Label endInstanceOflabel = beginRuntimeCheck(cv, false, 0, adviceInfo.getAdviceInfo(), -1);
// get the aspect instance
loadAspect(cv, NON_OPTIMIZED_JOIN_POINT, 0, adviceInfo.getAspectInfo());
// load the arguments to the advice from the join point instance plus build up the
// advice method signature
int[] argIndexes = adviceInfo.getAdviceMethodArgIndexes();
for (int j = 0; j < argIndexes.length; j++) {
int argIndex = argIndexes[j];
if (argIndex >= 0) {
Type argumentType = m_argumentTypes[argIndex];
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(
GETFIELD,
m_joinPointClassName,
ARGUMENT_FIELD + argIndex,
argumentType.getDescriptor()
);
} else if (argIndex == AdviceInfo.JOINPOINT_ARG ||
argIndex == AdviceInfo.STATIC_JOINPOINT_ARG ||
argIndex == AdviceInfo.VALID_NON_AW_AROUND_CLOSURE_TYPE ||
argIndex == AdviceInfo.CUSTOM_JOIN_POINT_ARG) {
cv.visitVarInsn(ALOAD, 0);
} else if (argIndex == AdviceInfo.TARGET_ARG) {
loadCallee(cv, NON_OPTIMIZED_JOIN_POINT, 0, INDEX_NOTAVAILABLE);
// add a cast if runtime check was used
if (adviceInfo.getAdviceInfo().hasTargetWithRuntimeCheck()) {
cv.visitTypeInsn(
CHECKCAST, adviceInfo.getAdviceInfo().getMethodParameterTypes()[j].getInternalName()
);
}
} else if (argIndex == AdviceInfo.THIS_ARG) {
loadCaller(cv, NON_OPTIMIZED_JOIN_POINT, 0, INDEX_NOTAVAILABLE);
} else {
throw new Error("advice method argument index type is not supported: " + argIndex);
}
}
// invoke the advice method
cv.visitMethodInsn(
INVOKEVIRTUAL,
adviceInfo.getAspectInfo().getAspectClassName(),
adviceInfo.getAdviceInfo().getMethodName(),
adviceInfo.getAdviceInfo().getMethodSignature()
);
cv.visitVarInsn(ASTORE, 1);
// we need to handle the case when the advice was skipped due to runtime check
// that is : if (runtimeCheck) { ret = advice() } else { ret = proceed() }
if (endInstanceOflabel != null) {
Label elseInstanceOfLabel = new Label();
cv.visitJumpInsn(GOTO, elseInstanceOfLabel);
endRuntimeCheck(cv, adviceInfo.getAdviceInfo(), endInstanceOflabel);
cv.visitVarInsn(ALOAD, 0);
cv.visitMethodInsn(INVOKESPECIAL, m_joinPointClassName, PROCEED_METHOD_NAME, PROCEED_METHOD_SIGNATURE);
cv.visitVarInsn(ASTORE, 1);
cv.visitLabel(elseInstanceOfLabel);
}
cv.visitLabel(returnLabels[i]);
cv.visitVarInsn(ALOAD, 1);
cv.visitInsn(ARETURN);
}
if (m_isThisAdvisable) {
int delegationCaseIndex = caseLabels.length - 1;
cv.visitLabel(caseLabels[delegationCaseIndex]);
cv.visitVarInsn(ALOAD, 0);
cv.visitInsn(ICONST_0);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, INTERCEPTOR_INDEX_FIELD_NAME, I);
cv.visitVarInsn(ALOAD, 0);
cv.visitMethodInsn(INVOKEVIRTUAL, m_joinPointClassName, PROCEED_METHOD_NAME, PROCEED_METHOD_SIGNATURE);
cv.visitLabel(returnLabels[delegationCaseIndex]);
cv.visitInsn(ARETURN);
}
// invoke the target join point in the default case
cv.visitLabel(defaultCaseLabel);
AsmHelper.prepareWrappingOfPrimitiveType(cv, Type.getReturnType(m_calleeMemberDesc));
createJoinPointInvocation(cv);
Type m_returnType = null;
if (m_joinPointType != JoinPointType.CONSTRUCTOR_CALL_INT) {
m_returnType = Type.getReturnType(m_calleeMemberDesc);
} else {
m_returnType = Type.getType(m_calleeClassSignature);
}
AsmHelper.wrapPrimitiveType(cv, m_returnType);
cv.visitVarInsn(ASTORE, 1);
// store it in Rtti return value
addReturnedValueToJoinPoint(cv, 1, 0, true);
// set it as the CALLEE instance for ctor call - TODO refactor somewhere else
if (m_joinPointType == JoinPointType.CONSTRUCTOR_CALL_INT) {
cv.visitVarInsn(ALOAD, 0);
cv.visitVarInsn(ALOAD, 1);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, CALLEE_INSTANCE_FIELD_NAME, m_calleeClassSignature);
}
cv.visitLabel(gotoLabel);
cv.visitVarInsn(ALOAD, 1);
cv.visitInsn(ARETURN);
// finally clause
cv.visitLabel(handlerLabel);
cv.visitVarInsn(ASTORE, 2);
cv.visitLabel(endLabel);
cv.visitVarInsn(ALOAD, 2);
cv.visitInsn(ATHROW);
// set up the label table
cv.visitTryCatchBlock(tryLabel, returnLabels[0], handlerLabel, null);
for (int i = 1; i < caseLabels.length; i++) {
Label caseLabel = caseLabels[i];
Label returnLabel = returnLabels[i];
cv.visitTryCatchBlock(caseLabel, returnLabel, handlerLabel, null);
}
cv.visitTryCatchBlock(defaultCaseLabel, gotoLabel, handlerLabel, null);
cv.visitTryCatchBlock(handlerLabel, endLabel, handlerLabel, null);
cv.visitMaxs(0, 0);
}
/**
* Adds before advice invocations.
*
* @param cv
* @param isOptimizedJoinPoint
* @param argStartIndex index on stack of first target method arg (0 or 1, depends of static target or
* not)
* @param joinPointInstanceIndex >= 0 if STATIC_JOIN_POINT is NOT to be used (around advice)
* @param callerIndex
* @param calleeIndex
*/
protected void createBeforeAdviceInvocations(final CodeVisitor cv,
final boolean isOptimizedJoinPoint,
final int argStartIndex,
final int joinPointInstanceIndex, //FIXME redundant -1 with isStaticJP
final int callerIndex,
final int calleeIndex) {
for (int i = 0; i < m_beforeAdviceMethodInfos.length; i++) {
AdviceMethodInfo adviceMethodInfo = m_beforeAdviceMethodInfos[i];
// runtime check for target() etc
Label endInstanceOflabel = beginRuntimeCheck(
cv, isOptimizedJoinPoint, joinPointInstanceIndex, adviceMethodInfo.getAdviceInfo(), calleeIndex
);
//get the aspect instance
loadAspect(cv, isOptimizedJoinPoint, joinPointInstanceIndex, adviceMethodInfo.getAspectInfo());
AspectDefinition aspectDef = adviceMethodInfo.getAdviceInfo().getAdviceDefinition().getAspectDefinition();
if (aspectDef.isAspectWerkzAspect()) {
// AW aspect
int[] argIndexes = adviceMethodInfo.getAdviceMethodArgIndexes();
// if empty, we consider for now that we have to push JoinPoint for old advice with JoinPoint as sole arg
for (int j = 0; j < argIndexes.length; j++) {
int argIndex = argIndexes[j];
if (argIndex >= 0) {
Type argumentType = m_argumentTypes[argIndex];
int argStackIndex = AsmHelper.getRegisterIndexOf(m_argumentTypes, argIndex) + argStartIndex;
AsmHelper.loadType(cv, argStackIndex, argumentType);
} else if (argIndex == AdviceInfo.JOINPOINT_ARG || argIndex == AdviceInfo.STATIC_JOINPOINT_ARG) {
loadJoinPointInstance(cv, isOptimizedJoinPoint, joinPointInstanceIndex);
} else if (argIndex == AdviceInfo.TARGET_ARG) {
loadCallee(cv, isOptimizedJoinPoint, joinPointInstanceIndex, calleeIndex);
// add a cast if runtime check was used
if (adviceMethodInfo.getAdviceInfo().hasTargetWithRuntimeCheck()) {
cv.visitTypeInsn(
CHECKCAST,
adviceMethodInfo.getAdviceInfo().getMethodParameterTypes()[j].getInternalName()
);
}
} else if (argIndex == AdviceInfo.THIS_ARG) {
loadCaller(cv, isOptimizedJoinPoint, joinPointInstanceIndex, callerIndex);
} else {
throw new Error("special argument index is not supported: " + argIndex);
}
}
} else {
// non-AW aspect
adviceMethodInfo.setJoinPointIndex(joinPointInstanceIndex);
for (int j = 0; j < m_aspectModels.length; j++) {
AspectModel aspectModel = m_aspectModels[j];
if (aspectDef.getAspectModel().equals(aspectModel.getAspectModelType())) {
aspectModel.createBeforeAdviceArgumentHandling(cv, adviceMethodInfo);
}
}
}
cv.visitMethodInsn(
INVOKEVIRTUAL,
adviceMethodInfo.getAspectInfo().getAspectClassName(),
adviceMethodInfo.getAdviceInfo().getMethodName(),
adviceMethodInfo.getAdviceInfo().getMethodSignature()
);
// end label of runtime checks
endRuntimeCheck(cv, adviceMethodInfo.getAdviceInfo(), endInstanceOflabel);
}
if (m_isThisAdvisable) {
createBeforeInterceptorInvocations(cv, joinPointInstanceIndex, callerIndex + 1);
}
}
/**
* Adds after advice invocations.
*
* @param cv
* @param isOptimizedJoinPoint
* @param argStartIndex index on stack of first target method arg (0 or 1, depends of static target or
* not)
* @param joinPointInstanceIndex >= 0 if STATIC_JOIN_POINT is NOT to be used (around advice)
* @param callerIndex
* @param calleeIndex
*/
protected void createAfterFinallyAdviceInvocations(final CodeVisitor cv,
final boolean isOptimizedJoinPoint,
final int argStartIndex,
final int joinPointInstanceIndex,
final int callerIndex,
final int calleeIndex) {
// add after advice in reverse order
for (int i = m_afterFinallyAdviceMethodInfos.length - 1; i >= 0; i--) {
AdviceMethodInfo advice = m_afterFinallyAdviceMethodInfos[i];
createAfterAdviceInvocation(
cv, isOptimizedJoinPoint, advice, joinPointInstanceIndex, argStartIndex,
callerIndex, calleeIndex, INDEX_NOTAVAILABLE
);
}
}
/**
* Adds after returning advice invocations.
*
* @param cv
* @param isOptimizedJoinPoint
* @param argStartIndex index on stack of first target method arg (0 or 1, depends of static target or
* not)
* @param joinPointInstanceIndex >= 0 if STATIC_JOIN_POINT is NOT to be used (around advice)
* @param callerIndex
* @param calleeIndex
*/
protected void createAfterReturningAdviceInvocations(final CodeVisitor cv,
final boolean isOptimizedJoinPoint,
final int argStartIndex,
final int joinPointInstanceIndex,
final int callerIndex,
final int calleeIndex) {
final int returnValueIndex = (joinPointInstanceIndex != INDEX_NOTAVAILABLE) ?
(joinPointInstanceIndex + 1) : callerIndex + 1;
if (m_isThisAdvisable) {
createAfterReturningInterceptorInvocations(cv, joinPointInstanceIndex, returnValueIndex);
}
boolean hasPoppedReturnValueFromStack = false;
for (int i = m_afterReturningAdviceMethodInfos.length - 1; i >= 0; i--) {
AdviceMethodInfo advice = m_afterReturningAdviceMethodInfos[i];
// set the return value index that will be used as arg to advice
advice.setSpecialArgumentIndex(returnValueIndex);
String specialArgDesc = advice.getSpecialArgumentTypeDesc();
if (specialArgDesc == null) {
// after returning
createAfterAdviceInvocation(
cv, isOptimizedJoinPoint, advice, joinPointInstanceIndex, argStartIndex,
callerIndex, calleeIndex, INDEX_NOTAVAILABLE
);
} else {
// after returning <TYPE>
if (AsmHelper.isPrimitive(m_returnType)) {
if (m_returnType.getDescriptor().equals(specialArgDesc)) {
createAfterAdviceInvocation(
cv, isOptimizedJoinPoint, advice, joinPointInstanceIndex, argStartIndex,
callerIndex, calleeIndex, returnValueIndex
);
}
} else {
cv.visitVarInsn(ALOAD, returnValueIndex);
cv.visitTypeInsn(INSTANCEOF, advice.getSpecialArgumentTypeName());
Label label = new Label();
cv.visitJumpInsn(IFEQ, label);
createAfterAdviceInvocation(
cv, isOptimizedJoinPoint, advice, joinPointInstanceIndex, argStartIndex,
callerIndex, calleeIndex, returnValueIndex
);
cv.visitLabel(label);
}
}
}
// need the return value in return operation
if (!requiresProceedMethod() && hasPoppedReturnValueFromStack) {
cv.visitVarInsn(ALOAD, returnValueIndex);
}
}
/**
* Adds a single generic after advice invocation.
*
* @param cv
* @param isOptimizedJoinPoint
* @param adviceMethodInfo
* @param joinPointInstanceIndex
* @param argStartIndex
* @param callerIndex
* @param calleeIndex
* @param specialArgIndex for afterReturning / Throwing when binding is used
*/
protected void createAfterAdviceInvocation(final CodeVisitor cv,
final boolean isOptimizedJoinPoint,
final AdviceMethodInfo adviceMethodInfo,
final int joinPointInstanceIndex,
final int argStartIndex,
final int callerIndex,
final int calleeIndex,
final int specialArgIndex) {
// runtime check for target() etc
Label endInstanceOflabel = beginRuntimeCheck(
cv, isOptimizedJoinPoint, joinPointInstanceIndex,
adviceMethodInfo.getAdviceInfo(), calleeIndex
);
// get the aspect instance
loadAspect(cv, isOptimizedJoinPoint, joinPointInstanceIndex, adviceMethodInfo.getAspectInfo());
AspectDefinition aspectDef = adviceMethodInfo.getAdviceInfo().getAdviceDefinition().getAspectDefinition();
if (aspectDef.isAspectWerkzAspect()) {
// AW aspect
// load the arguments that should be passed to the advice
int[] argIndexes = adviceMethodInfo.getAdviceMethodArgIndexes();
for (int j = 0; j < argIndexes.length; j++) {
int argIndex = argIndexes[j];
if (argIndex >= 0) {
Type argumentType = m_argumentTypes[argIndex];
int argStackIndex = AsmHelper.getRegisterIndexOf(m_argumentTypes, argIndex) + argStartIndex;
AsmHelper.loadType(cv, argStackIndex, argumentType);
} else if (argIndex == AdviceInfo.JOINPOINT_ARG || argIndex == AdviceInfo.STATIC_JOINPOINT_ARG) {
loadJoinPointInstance(cv, isOptimizedJoinPoint, joinPointInstanceIndex);
} else if (argIndex == AdviceInfo.TARGET_ARG) {
loadCallee(cv, isOptimizedJoinPoint, joinPointInstanceIndex, calleeIndex);
// add a cast if runtime check was used
if (adviceMethodInfo.getAdviceInfo().hasTargetWithRuntimeCheck()) {
cv.visitTypeInsn(
CHECKCAST,
adviceMethodInfo.getAdviceInfo().getMethodParameterTypes()[j].getInternalName()
);
}
} else if (argIndex == AdviceInfo.THIS_ARG) {
loadCaller(cv, isOptimizedJoinPoint, joinPointInstanceIndex, callerIndex);
} else if (argIndex == AdviceInfo.SPECIAL_ARGUMENT && specialArgIndex != INDEX_NOTAVAILABLE) {
Type argumentType = adviceMethodInfo.getAdviceInfo().getMethodParameterTypes()[j];
AsmHelper.loadType(cv, specialArgIndex, argumentType);
if (adviceMethodInfo.getAdviceInfo().getAdviceDefinition().getType().equals(
AdviceType.AFTER_THROWING
)) {
cv.visitTypeInsn(CHECKCAST, argumentType.getInternalName());
}
} else {
throw new Error("magic index is not supported: " + argIndex);
}
}
} else {
// non-AW aspect
adviceMethodInfo.setJoinPointIndex(joinPointInstanceIndex);
for (int i = 0; i < m_aspectModels.length; i++) {
AspectModel aspectModel = m_aspectModels[i];
if (aspectDef.getAspectModel().equals(aspectModel.getAspectModelType())) {
aspectModel.createAfterAdviceArgumentHandling(cv, adviceMethodInfo);
}
}
}
cv.visitMethodInsn(
INVOKEVIRTUAL,
adviceMethodInfo.getAspectInfo().getAspectClassName(),
adviceMethodInfo.getAdviceInfo().getMethodName(),
adviceMethodInfo.getAdviceInfo().getMethodSignature()
);
// end label of runtime checks
endRuntimeCheck(cv, adviceMethodInfo.getAdviceInfo(), endInstanceOflabel);
}
/**
* Adds the return value to the RETURNED field.
*
* @param cv
* @param returnValueIndex
* @param joinPointInstanceIndex
* @param unwrap set to true if already wrapped on the stack (within proceed() code)
*/
protected void addReturnedValueToJoinPoint(final CodeVisitor cv,
final int returnValueIndex,
final int joinPointInstanceIndex,
final boolean unwrap) {
if (m_requiresJoinPoint && m_returnType.getSort() != Type.VOID) {
if (m_joinPointType == JoinPointType.METHOD_EXECUTION_INT
|| m_joinPointType == JoinPointType.METHOD_CALL_INT
|| m_joinPointType == JoinPointType.CONSTRUCTOR_CALL_INT) {
//TODO should we do something for field get / set
loadJoinPointInstance(cv, NON_OPTIMIZED_JOIN_POINT, joinPointInstanceIndex);
if (unwrap && AsmHelper.isPrimitive(m_returnType)) {
cv.visitVarInsn(ALOAD, returnValueIndex);
AsmHelper.unwrapType(cv, m_returnType);
} else {
AsmHelper.loadType(cv, returnValueIndex, m_returnType);
}
cv.visitFieldInsn(
PUTFIELD, m_joinPointClassName,
RETURN_VALUE_FIELD_NAME, m_returnType.getDescriptor()
);
}
}
}
/**
* Loads the join point instance, takes static/non-static join point access into account.
*
* @param cv
* @param isOptimizedJoinPoint
* @param joinPointInstanceIndex
*/
protected void loadJoinPointInstance(final CodeVisitor cv,
final boolean isOptimizedJoinPoint,
final int joinPointInstanceIndex) {
if (isOptimizedJoinPoint) {
cv.visitFieldInsn(
GETSTATIC, m_joinPointClassName,
OPTIMIZED_JOIN_POINT_INSTANCE_FIELD_NAME,
L + m_joinPointClassName + SEMICOLON
);
} else {
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
}
}
/**
* Loads the argument member fields.
*
* @param cv
* @param argStartIndex
*/
protected void loadArgumentMemberFields(final CodeVisitor cv, final int argStartIndex) {
int argStackIndex = argStartIndex;
for (int index = 0; index < m_argumentTypes.length; index++) {
Type argumentType = m_argumentTypes[index];
argStackIndex = AsmHelper.loadType(cv, argStackIndex, argumentType);
}
}
/**
* Loads the arguments.
*
* @param cv
*/
protected void loadArguments(final CodeVisitor cv) {
for (int i = 0; i < m_fieldNames.length; i++) {
String fieldName = m_fieldNames[i];
Type argumentType = m_argumentTypes[i];
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, fieldName, argumentType.getDescriptor());
}
}
/**
* Resets the stack frame counter.
*
* @param cv
*/
protected void resetStackFrameCounter(final CodeVisitor cv) {
cv.visitVarInsn(ALOAD, 0);
cv.visitInsn(ICONST_M1);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, STACK_FRAME_COUNTER_FIELD_NAME, I);
}
/**
* Handles the incrementation of the stack frame.
*
* @param cv
*/
protected void incrementStackFrameCounter(final CodeVisitor cv) {
cv.visitVarInsn(ALOAD, 0);
cv.visitInsn(DUP);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, STACK_FRAME_COUNTER_FIELD_NAME, I);
cv.visitInsn(ICONST_1);
cv.visitInsn(IADD);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, STACK_FRAME_COUNTER_FIELD_NAME, I);
}
/**
* Create and load a structure (f.e. array of Object) where args are stored, before setting the Rtti
* with it (See addParametersToRttiInstance). The structure is stored at the given stackFreeIndex.
* <p/>
* We provide here a default implementation that is suitable for method and constructor call and execution.
* See createParameterWrappedAt for field get/set and handler compiler (no array of argument needed)
*
* @param cv
* @param stackFreeIndex
*/
protected final void createArgumentArrayAt(final CodeVisitor cv, final int stackFreeIndex) {
AsmHelper.loadIntegerConstant(cv, m_fieldNames.length);
cv.visitTypeInsn(ANEWARRAY, OBJECT_CLASS_NAME);
cv.visitVarInsn(ASTORE, stackFreeIndex);
for (int i = 0; i < m_argumentTypes.length; i++) {
cv.visitVarInsn(ALOAD, stackFreeIndex);
AsmHelper.loadIntegerConstant(cv, i);
AsmHelper.prepareWrappingOfPrimitiveType(cv, m_argumentTypes[i]);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, ARGUMENT_FIELD + i, m_argumentTypes[i].getDescriptor());
AsmHelper.wrapPrimitiveType(cv, m_argumentTypes[i]);
cv.visitInsn(AASTORE);
}
}
/**
* Creates utility methods for the join point (getter, setters etc.).
*/
protected void createUtilityMethods() {
CodeVisitor cv;
// addMetaData
{
cv = m_cw.visitMethod(ACC_PUBLIC, ADD_META_DATA_METHOD_NAME, ADD_META_DATA_METHOD_SIGNATURE, null, null);
cv.visitFieldInsn(GETSTATIC, m_joinPointClassName, META_DATA_FIELD_NAME, MAP_CLASS_SIGNATURE);
cv.visitVarInsn(ALOAD, 1);
cv.visitVarInsn(ALOAD, 2);
cv.visitMethodInsn(
INVOKEINTERFACE,
MAP_CLASS_NAME,
PUT_METHOD_NAME,
PUT_METHOD_SIGNATURE
);
cv.visitInsn(POP);
cv.visitInsn(RETURN);
cv.visitMaxs(0, 0);
}
// getMetaData
{
cv = m_cw.visitMethod(ACC_PUBLIC, GET_META_DATA_METHOD_NAME, GET_META_DATA_METHOD_SIGNATURE, null, null);
cv.visitFieldInsn(GETSTATIC, m_joinPointClassName, META_DATA_FIELD_NAME, MAP_CLASS_SIGNATURE);
cv.visitVarInsn(ALOAD, 1);
cv.visitMethodInsn(INVOKEINTERFACE, MAP_CLASS_NAME, GET_METHOD_NAME, GET_METHOD_SIGNATURE);
cv.visitInsn(ARETURN);
cv.visitMaxs(0, 0);
}
// getCallee
{
cv = m_cw.visitMethod(
ACC_PUBLIC,
GET_CALLEE_METHOD_NAME,
NO_PARAMS_SIGNATURE + OBJECT_CLASS_SIGNATURE,
null, null
);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, CALLEE_INSTANCE_FIELD_NAME, m_calleeClassSignature);
cv.visitInsn(ARETURN);
cv.visitMaxs(0, 0);
}
// getCaller
{
cv = m_cw.visitMethod(
ACC_PUBLIC,
GET_CALLER_METHOD_NAME,
NO_PARAMS_SIGNATURE + OBJECT_CLASS_SIGNATURE,
null, null
);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, CALLER_INSTANCE_FIELD_NAME, m_callerClassSignature);
cv.visitInsn(ARETURN);
cv.visitMaxs(0, 0);
}
// getTarget
{
cv = m_cw.visitMethod(
ACC_PUBLIC,
GET_TARGET_METHOD_NAME,
NO_PARAMS_SIGNATURE + OBJECT_CLASS_SIGNATURE,
null, null
);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, CALLEE_INSTANCE_FIELD_NAME, m_calleeClassSignature);
cv.visitInsn(ARETURN);
cv.visitMaxs(0, 0);
}
// getThis
{
cv = m_cw.visitMethod(
ACC_PUBLIC,
GET_THIS_METHOD_NAME,
NO_PARAMS_SIGNATURE + OBJECT_CLASS_SIGNATURE,
null, null
);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, CALLER_INSTANCE_FIELD_NAME, m_callerClassSignature);
cv.visitInsn(ARETURN);
cv.visitMaxs(0, 0);
}
// getCallerClass
{
cv =
m_cw.visitMethod(
ACC_PUBLIC,
GET_CALLER_CLASS_METHOD_NAME,
GET_CALLER_CLASS_METHOD_SIGNATURE,
null,
null
);
cv.visitFieldInsn(GETSTATIC, m_joinPointClassName, THIS_CLASS_FIELD_NAME, CLASS_CLASS_SIGNATURE);
cv.visitInsn(ARETURN);
cv.visitMaxs(0, 0);
}
// getCalleeClass
{
cv =
m_cw.visitMethod(
ACC_PUBLIC,
GET_CALLEE_CLASS_METHOD_NAME,
GET_CALLEE_CLASS_METHOD_SIGNATURE,
null,
null
);
cv.visitFieldInsn(GETSTATIC, m_joinPointClassName, TARGET_CLASS_FIELD_NAME, CLASS_CLASS_SIGNATURE);
cv.visitInsn(ARETURN);
cv.visitMaxs(0, 0);
}
// getTargetClass, deprecated but still there
{
cv =
m_cw.visitMethod(
ACC_PUBLIC,
GET_TARGET_CLASS_METHOD_NAME,
GET_TARGET_CLASS_METHOD_SIGNATURE,
null,
null
);
cv.visitFieldInsn(GETSTATIC, m_joinPointClassName, TARGET_CLASS_FIELD_NAME, CLASS_CLASS_SIGNATURE);
cv.visitInsn(ARETURN);
cv.visitMaxs(0, 0);
}
// getType
{
cv = m_cw.visitMethod(ACC_PUBLIC, GET_TYPE_METHOD_NAME, GET_TYPE_METHOD_SIGNATURE, null, null);
AsmHelper.loadIntegerConstant(cv, m_joinPointType);
cv.visitMethodInsn(
INVOKESTATIC, Type.getType(JoinPointType.class).getInternalName(), "fromInt",
"(I)" + Type.getType(JoinPointType.class).getDescriptor()
);
cv.visitInsn(ARETURN);
cv.visitMaxs(0, 0);
}
// getEnclosingStaticJoinPoint
{
cv = m_cw.visitMethod(
ACC_PUBLIC,
GET_ENCLOSING_SJP_METHOD_NAME,
GET_ENCLOSING_SJP_METHOD_SIGNATURE,
null,
null
);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETSTATIC,
m_joinPointClassName,
ENCLOSING_SJP_FIELD_NAME,
ENCLOSING_SJP_FIELD_CLASS_SIGNATURE
);
cv.visitInsn(ARETURN);
cv.visitMaxs(0, 0);
}
}
/**
* Creates the copy method.
* <p/>
* TODO refactor and put in subclasses
*/
protected void createCopyMethod() {
CodeVisitor cv = m_cw.visitMethod(ACC_PUBLIC, COPY_METHOD_NAME, COPY_METHOD_SIGNATURE, null, null);
// create a new join point instance
cv.visitTypeInsn(NEW, m_joinPointClassName);
cv.visitInsn(DUP);
int joinPointCloneIndex = 1;
cv.visitMethodInsn(INVOKESPECIAL, m_joinPointClassName, INIT_METHOD_NAME, NO_PARAM_RETURN_VOID_SIGNATURE);
cv.visitVarInsn(ASTORE, joinPointCloneIndex);
// set stack frame index
cv.visitVarInsn(ALOAD, joinPointCloneIndex);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, STACK_FRAME_COUNTER_FIELD_NAME, I);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, STACK_FRAME_COUNTER_FIELD_NAME, I);
if (m_isThisAdvisable) {
// set interceptor index
cv.visitVarInsn(ALOAD, joinPointCloneIndex);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, INTERCEPTOR_INDEX_FIELD_NAME, I);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, INTERCEPTOR_INDEX_FIELD_NAME, I);
// set array length fields
cv.visitVarInsn(ALOAD, joinPointCloneIndex);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, NR_OF_BEFORE_INTERCEPTORS_FIELD_NAME, I);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, NR_OF_BEFORE_INTERCEPTORS_FIELD_NAME, I);
cv.visitVarInsn(ALOAD, joinPointCloneIndex);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, NR_OF_AROUND_INTERCEPTORS_FIELD_NAME, I);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, NR_OF_AROUND_INTERCEPTORS_FIELD_NAME, I);
cv.visitVarInsn(ALOAD, joinPointCloneIndex);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, NR_OF_AFTER_INTERCEPTORS_FIELD_NAME, I);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, NR_OF_AFTER_INTERCEPTORS_FIELD_NAME, I);
cv.visitVarInsn(ALOAD, joinPointCloneIndex);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, NR_OF_AFTER_RETURNING_INTERCEPTORS_FIELD_NAME, I);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, NR_OF_AFTER_RETURNING_INTERCEPTORS_FIELD_NAME, I);
cv.visitVarInsn(ALOAD, joinPointCloneIndex);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, NR_OF_AFTER_THROWING_INTERCEPTORS_FIELD_NAME, I);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, NR_OF_AFTER_THROWING_INTERCEPTORS_FIELD_NAME, I);
// set arrays
cv.visitVarInsn(ALOAD, joinPointCloneIndex);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(
GETFIELD, m_joinPointClassName, BEFORE_INTERCEPTORS_FIELD_NAME,
BEFORE_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitFieldInsn(
PUTFIELD, m_joinPointClassName, BEFORE_INTERCEPTORS_FIELD_NAME,
BEFORE_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitVarInsn(ALOAD, joinPointCloneIndex);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(
GETFIELD, m_joinPointClassName, AROUND_INTERCEPTORS_FIELD_NAME,
AROUND_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitFieldInsn(
PUTFIELD, m_joinPointClassName, AROUND_INTERCEPTORS_FIELD_NAME,
AROUND_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitVarInsn(ALOAD, joinPointCloneIndex);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(
GETFIELD, m_joinPointClassName, AFTER_INTERCEPTORS_FIELD_NAME, AFTER_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitFieldInsn(
PUTFIELD, m_joinPointClassName, AFTER_INTERCEPTORS_FIELD_NAME, AFTER_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitVarInsn(ALOAD, joinPointCloneIndex);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(
GETFIELD, m_joinPointClassName, AFTER_RETURNING_INTERCEPTORS_FIELD_NAME,
AFTER_RETURNING_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitFieldInsn(
PUTFIELD, m_joinPointClassName, AFTER_RETURNING_INTERCEPTORS_FIELD_NAME,
AFTER_RETURNING_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitVarInsn(ALOAD, joinPointCloneIndex);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(
GETFIELD, m_joinPointClassName, AFTER_THROWING_INTERCEPTORS_FIELD_NAME,
AFTER_THROWING_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitFieldInsn(
PUTFIELD, m_joinPointClassName, AFTER_THROWING_INTERCEPTORS_FIELD_NAME,
AFTER_THROWING_ADVICE_ARRAY_CLASS_SIGNATURE
);
}
// set callee
cv.visitVarInsn(ALOAD, joinPointCloneIndex);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, CALLEE_INSTANCE_FIELD_NAME, m_calleeClassSignature);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, CALLEE_INSTANCE_FIELD_NAME, m_calleeClassSignature);
// set caller
cv.visitVarInsn(ALOAD, joinPointCloneIndex);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, CALLER_INSTANCE_FIELD_NAME, m_callerClassSignature);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, CALLER_INSTANCE_FIELD_NAME, m_callerClassSignature);
// set the arguments
for (int i = 0; i < m_fieldNames.length; i++) {
String fieldName = m_fieldNames[i];
cv.visitVarInsn(ALOAD, joinPointCloneIndex);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, fieldName, m_argumentTypes[i].getDescriptor());
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, fieldName, m_argumentTypes[i].getDescriptor());
}
// set the returned field if any
if (m_returnType.getSort() != Type.VOID) {
cv.visitVarInsn(ALOAD, joinPointCloneIndex);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, RETURN_VALUE_FIELD_NAME, m_returnType.getDescriptor());
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, RETURN_VALUE_FIELD_NAME, m_returnType.getDescriptor());
}
cv.visitVarInsn(ALOAD, joinPointCloneIndex);
cv.visitInsn(ARETURN);
cv.visitMaxs(0, 0);
}
/**
* Build up the signature of the 'invoke' methods.
*
* @return
*/
protected String buildInvokeMethodSignature() {
StringBuffer invokeDescBuf = new StringBuffer();
invokeDescBuf.append('(');
if (m_joinPointType != JoinPointType.CONSTRUCTOR_CALL_INT) {
if (!Modifier.isStatic(m_calleeMemberModifiers)) {
// callee
invokeDescBuf.append(m_calleeClassSignature);
}
}
// args
for (int i = 0; i < m_argumentTypes.length; i++) {
Type type = m_argumentTypes[i];
invokeDescBuf.append(type.getDescriptor());
}
// caller
invokeDescBuf.append(m_callerClassSignature);
invokeDescBuf.append(')');
invokeDescBuf.append(m_returnType.getDescriptor());
return invokeDescBuf.toString();
}
/**
* Return the number of argument the joinpoint has (excludes JoinPoint, Rtti, this / target) but is only
* the number of argument we will have in the rtti (advised method/ctor args or 1 for field / handler)
*
* @return
*/
protected final boolean hasArguments() {
return m_argumentTypes.length > 0;
}
/**
* Checks if at least one advice is using this or target (bounded or runtime check)
*
* @return true if so
*/
protected boolean requiresThisOrTarget() {
return m_isThisAdvisable ||
requiresThisOrTarget(m_aroundAdviceMethodInfos) ||
requiresThisOrTarget(m_beforeAdviceMethodInfos) ||
requiresThisOrTarget(m_afterFinallyAdviceMethodInfos) ||
requiresThisOrTarget(m_afterReturningAdviceMethodInfos) ||
requiresThisOrTarget(m_afterThrowingAdviceMethodInfos);
}
/**
* Checks if at least one advice is using the non static JoinPoint explicitly
*
* @return true if so
*/
protected boolean requiresJoinPoint() {
return m_isThisAdvisable ||
requiresJoinPoint(m_aroundAdviceMethodInfos) ||
requiresJoinPoint(m_beforeAdviceMethodInfos) ||
requiresJoinPoint(m_afterFinallyAdviceMethodInfos) ||
requiresJoinPoint(m_afterReturningAdviceMethodInfos) ||
requiresJoinPoint(m_afterThrowingAdviceMethodInfos);
}
/**
* Checks if at least one advice is using target or this (bounded or runtime check)
*
* @param adviceMethodInfos
* @return true if so
*/
protected boolean requiresThisOrTarget(final AdviceMethodInfo[] adviceMethodInfos) {
for (int i = 0; i < adviceMethodInfos.length; i++) {
if (adviceMethodInfos[i].requiresThisOrTarget()) {
return true;
}
}
return false;
}
/**
* Checks if at least one advice is using non static JoinPoint explicitly
*
* @param adviceMethodInfos
* @return true if so
*/
protected boolean requiresJoinPoint(final AdviceMethodInfo[] adviceMethodInfos) {
for (int i = 0; i < adviceMethodInfos.length; i++) {
if (adviceMethodInfos[i].requiresJoinPoint()) {
return true;
}
}
return false;
}
/**
* Handles the if case for runtime check (target instanceof, cflow)
*
* @param cv
* @param isOptimizedJoinPoint
* @param joinPointInstanceIndex
* @param adviceInfo
* @return the label for endIf or null if the adviceInfo did not required runtime check
*/
protected Label beginRuntimeCheck(final CodeVisitor cv,
final boolean isOptimizedJoinPoint,
final int joinPointInstanceIndex,
final AdviceInfo adviceInfo,
final int calleeIndex) {
Label endRuntimeCheckLabel = null;
if (adviceInfo.hasTargetWithRuntimeCheck() || adviceInfo.getAdviceDefinition().hasCflowOrCflowBelow()) {
endRuntimeCheckLabel = new Label();
// create a specific visitor everytime
RuntimeCheckVisitor runtimeCheckVisitor = new RuntimeCheckVisitor(
this, cv, adviceInfo.getExpressionInfo(), isOptimizedJoinPoint, joinPointInstanceIndex,
calleeIndex
);
runtimeCheckVisitor.pushCheckOnStack(adviceInfo.getExpressionContext());
cv.visitJumpInsn(IFEQ, endRuntimeCheckLabel);
}
return endRuntimeCheckLabel;
}
/**
* Ends the ifLabel of a runtime check
*
* @param cv
* @param adviceInfo
* @param label if null, then do nothing (means we did not had a runtime check)
*/
protected void endRuntimeCheck(final CodeVisitor cv, final AdviceInfo adviceInfo, final Label label) {
if (adviceInfo.hasTargetWithRuntimeCheck() || adviceInfo.getAdviceDefinition().hasCflowOrCflowBelow()) {
cv.visitLabel(label);
}
}
/**
* Helper method to load the callee on the stack
*
* @param cv
* @param isOptimizedJoinPoint
* @param joinPointIndex
* @param calleeIndex
*/
public void loadCallee(final CodeVisitor cv,
final boolean isOptimizedJoinPoint,
final int joinPointIndex,
final int calleeIndex) {
if (isOptimizedJoinPoint) {
// grab the callee from the invoke parameters directly
cv.visitVarInsn(ALOAD, calleeIndex);
} else {
loadJoinPointInstance(cv, isOptimizedJoinPoint, joinPointIndex);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, CALLEE_INSTANCE_FIELD_NAME, m_calleeClassSignature);
}
}
/**
* Helper method to load the caller on the stack
*
* @param cv
* @param isOptimizedJoinPoint
* @param joinPointIndex
* @param callerIndex
*/
protected void loadCaller(final CodeVisitor cv,
final boolean isOptimizedJoinPoint,
final int joinPointIndex,
final int callerIndex) {
if (isOptimizedJoinPoint) {
// grab the callee from the invoke parameters directly
cv.visitVarInsn(ALOAD, callerIndex);
} else {
loadJoinPointInstance(cv, isOptimizedJoinPoint, joinPointIndex);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, CALLER_INSTANCE_FIELD_NAME, m_callerClassSignature);
}
}
/**
* Loads the aspect instance.
*
* @param cv
* @param isOptimizedJoinPoint
* @param joinPointIndex
* @param aspectInfo
*/
protected void loadAspect(final CodeVisitor cv,
final boolean isOptimizedJoinPoint,
final int joinPointIndex,
final AspectInfo aspectInfo) {
DeploymentModel deploymentModel = aspectInfo.getDeploymentModel();
if (deploymentModel.equals(DeploymentModel.PER_JVM) ||
deploymentModel.equals(DeploymentModel.PER_CLASS)) {
cv.visitFieldInsn(
GETSTATIC, m_joinPointClassName, aspectInfo.getAspectFieldName(),
aspectInfo.getAspectClassSignature()
);
} else if (deploymentModel.equals(DeploymentModel.PER_INSTANCE)) {
loadJoinPointInstance(cv, isOptimizedJoinPoint, joinPointIndex);
cv.visitFieldInsn(
GETFIELD, m_joinPointClassName, aspectInfo.getAspectFieldName(),
aspectInfo.getAspectClassSignature()
);
} else {
throw new DefinitionException("deployment model [" + deploymentModel + "] is not supported");
}
}
/**
* Creates an invocation to Aspects.aspectOf(..).
*
* @param cv
* @param isOptimizedJoinPoint
* @param joinPointIndex
* @param callerIndex
* @param calleeIndex
* @param aspectInfo
*/
public void createInvocationToAspectOf(final CodeVisitor cv,
final boolean isOptimizedJoinPoint,
final int joinPointIndex,
final int callerIndex,
final int calleeIndex,
final AspectInfo aspectInfo) {
if (aspectInfo.getDeploymentModel() == DeploymentModel.PER_INSTANCE) {
//generates code: aspectField = (cast) Aspects.aspect$Of(aspectQN, containerClassName, callee)
loadJoinPointInstance(cv, isOptimizedJoinPoint, joinPointIndex);
cv.visitLdcInsn(aspectInfo.getAspectQualifiedName());
if (calleeIndex >= 0) {
cv.visitVarInsn(ALOAD, calleeIndex);
cv.visitLdcInsn(aspectInfo.getAspectDefinition().getContainerClassName());
cv.visitMethodInsn(
INVOKESTATIC,
ASPECTS_CLASS_NAME,
ASPECT_OF_METHOD_NAME,
ASPECT_OF_PER_INSTANCE_METHOD_SIGNATURE
);
} else {
// TODO: should this really happen? we are filtering at early stage now. - REMOVE CODE BLOCK
// fallback to perClass
//aspectField = (cast) Aspects.aspectOf(aspectQN, containerClass, calleeClass)
cv.visitFieldInsn(GETSTATIC, m_joinPointClassName, TARGET_CLASS_FIELD_NAME, CLASS_CLASS_SIGNATURE);
cv.visitLdcInsn(aspectInfo.getAspectDefinition().getContainerClassName());
cv.visitMethodInsn(
INVOKESTATIC,
ASPECTS_CLASS_NAME,
ASPECT_OF_METHOD_NAME,
ASPECT_OF_PER_CLASS_METHOD_SIGNATURE
);
}
cv.visitTypeInsn(CHECKCAST, aspectInfo.getAspectClassName());
cv.visitFieldInsn(
PUTFIELD, m_joinPointClassName, aspectInfo.getAspectFieldName(),
aspectInfo.getAspectClassSignature()
);
}
}
/**
* Generates code needed for handling Advisable management for the target class.
*
* @param cv
* @param joinPointInstanceIndex
* @param advisableIndex
*/
private void createInitializationForAdvisableManagement(final CodeVisitor cv,
final int joinPointInstanceIndex,
final int advisableIndex) {
// interceptor index
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitInsn(ICONST_M1);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, INTERCEPTOR_INDEX_FIELD_NAME, I);
initializeAroundInterceptors(cv, joinPointInstanceIndex, advisableIndex);
initializeBeforeInterceptors(cv, joinPointInstanceIndex, advisableIndex);
initializeAfterInterceptors(cv, joinPointInstanceIndex, advisableIndex);
initializeAfterReturningInterceptors(cv, joinPointInstanceIndex, advisableIndex);
initializeAfterThrowingInterceptors(cv, joinPointInstanceIndex, advisableIndex);
}
/**
* Handle the around interceptor init.
*
* @param cv
* @param joinPointInstanceIndex
* @param advisableIndex
*/
private void initializeAroundInterceptors(final CodeVisitor cv,
final int joinPointInstanceIndex,
final int advisableIndex) {
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitVarInsn(ALOAD, advisableIndex);
cv.visitTypeInsn(CHECKCAST, ADVISABLE_CLASS_NAME);
cv.visitLdcInsn(new Integer(m_joinPointClassName.hashCode()));
cv.visitMethodInsn(
INVOKEINTERFACE,
ADVISABLE_CLASS_NAME,
GET_AROUND_ADVICE_METHOD_NAME,
GET_AROUND_ADVICE_METHOD_SIGNATURE
);
cv.visitFieldInsn(
PUTFIELD,
m_joinPointClassName,
AROUND_INTERCEPTORS_FIELD_NAME,
AROUND_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitFieldInsn(
GETFIELD,
m_joinPointClassName,
AROUND_INTERCEPTORS_FIELD_NAME,
AROUND_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitInsn(ARRAYLENGTH);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, NR_OF_AROUND_INTERCEPTORS_FIELD_NAME, I);
}
/**
* Handle the before interceptor init.
*
* @param cv
* @param joinPointInstanceIndex
* @param advisableIndex
*/
private void initializeBeforeInterceptors(final CodeVisitor cv,
final int joinPointInstanceIndex,
final int advisableIndex) {
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitVarInsn(ALOAD, advisableIndex);
cv.visitTypeInsn(CHECKCAST, ADVISABLE_CLASS_NAME);
cv.visitLdcInsn(new Integer(m_joinPointClassName.hashCode()));
cv.visitMethodInsn(
INVOKEINTERFACE,
ADVISABLE_CLASS_NAME,
GET_BEFORE_ADVICE_METHOD_NAME,
GET_BEFORE_ADVICE_METHOD_SIGNATURE
);
cv.visitFieldInsn(
PUTFIELD,
m_joinPointClassName,
BEFORE_INTERCEPTORS_FIELD_NAME,
BEFORE_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitFieldInsn(
GETFIELD,
m_joinPointClassName,
BEFORE_INTERCEPTORS_FIELD_NAME,
BEFORE_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitInsn(ARRAYLENGTH);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, NR_OF_BEFORE_INTERCEPTORS_FIELD_NAME, I);
}
/**
* Handle the after finally interceptor init.
*
* @param cv
* @param joinPointInstanceIndex
* @param advisableIndex
*/
private void initializeAfterInterceptors(final CodeVisitor cv,
final int joinPointInstanceIndex,
final int advisableIndex) {
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitVarInsn(ALOAD, advisableIndex);
cv.visitTypeInsn(CHECKCAST, ADVISABLE_CLASS_NAME);
cv.visitLdcInsn(new Integer(m_joinPointClassName.hashCode()));
cv.visitMethodInsn(
INVOKEINTERFACE,
ADVISABLE_CLASS_NAME,
GET_AFTER_ADVICE_METHOD_NAME,
GET_AFTER_ADVICE_METHOD_SIGNATURE
);
cv.visitFieldInsn(
PUTFIELD,
m_joinPointClassName,
AFTER_INTERCEPTORS_FIELD_NAME,
AFTER_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitFieldInsn(
GETFIELD,
m_joinPointClassName,
AFTER_INTERCEPTORS_FIELD_NAME,
AFTER_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitInsn(ARRAYLENGTH);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, NR_OF_AFTER_INTERCEPTORS_FIELD_NAME, I);
}
/**
* Handle the after returning interceptor init.
*
* @param cv
* @param joinPointInstanceIndex
* @param advisableIndex
*/
private void initializeAfterReturningInterceptors(final CodeVisitor cv,
final int joinPointInstanceIndex,
final int advisableIndex) {
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitVarInsn(ALOAD, advisableIndex);
cv.visitTypeInsn(CHECKCAST, ADVISABLE_CLASS_NAME);
cv.visitLdcInsn(new Integer(m_joinPointClassName.hashCode()));
cv.visitMethodInsn(
INVOKEINTERFACE,
ADVISABLE_CLASS_NAME,
GET_AFTER_RETURNING_ADVICE_METHOD_NAME,
GET_AFTER_RETURNING_ADVICE_METHOD_SIGNATURE
);
cv.visitFieldInsn(
PUTFIELD,
m_joinPointClassName,
AFTER_RETURNING_INTERCEPTORS_FIELD_NAME,
AFTER_RETURNING_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitFieldInsn(
GETFIELD,
m_joinPointClassName,
AFTER_RETURNING_INTERCEPTORS_FIELD_NAME,
AFTER_RETURNING_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitInsn(ARRAYLENGTH);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, NR_OF_AFTER_RETURNING_INTERCEPTORS_FIELD_NAME, I);
}
/**
* Handle the after throwing interceptor init.
*
* @param cv
* @param joinPointInstanceIndex
* @param advisableIndex
*/
private void initializeAfterThrowingInterceptors(final CodeVisitor cv,
final int joinPointInstanceIndex,
final int advisableIndex) {
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitVarInsn(ALOAD, advisableIndex);
cv.visitTypeInsn(CHECKCAST, ADVISABLE_CLASS_NAME);
cv.visitLdcInsn(new Integer(m_joinPointClassName.hashCode()));
cv.visitMethodInsn(
INVOKEINTERFACE,
ADVISABLE_CLASS_NAME,
GET_AFTER_THROWING_ADVICE_METHOD_NAME,
GET_AFTER_THROWING_ADVICE_METHOD_SIGNATURE
);
cv.visitFieldInsn(
PUTFIELD,
m_joinPointClassName,
AFTER_THROWING_INTERCEPTORS_FIELD_NAME,
AFTER_THROWING_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitFieldInsn(
GETFIELD,
m_joinPointClassName,
AFTER_THROWING_INTERCEPTORS_FIELD_NAME,
AFTER_THROWING_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitInsn(ARRAYLENGTH);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, NR_OF_AFTER_THROWING_INTERCEPTORS_FIELD_NAME, I);
}
/**
* Handles the around interceptor invocations.
*
* @param cv
*/
private void createAroundInterceptorInvocations(final CodeVisitor cv) {
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, INTERCEPTOR_INDEX_FIELD_NAME, I);
cv.visitInsn(ICONST_M1);
Label ifStatementLabel = new Label();
cv.visitJumpInsn(IF_ICMPEQ, ifStatementLabel);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, INTERCEPTOR_INDEX_FIELD_NAME, I);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, NR_OF_AROUND_INTERCEPTORS_FIELD_NAME, I);
cv.visitJumpInsn(IF_ICMPGE, ifStatementLabel);
cv.visitVarInsn(ALOAD, 0);
cv.visitFieldInsn(
GETFIELD,
m_joinPointClassName,
AROUND_INTERCEPTORS_FIELD_NAME,
AROUND_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitVarInsn(ALOAD, 0);
cv.visitInsn(DUP);
cv.visitFieldInsn(GETFIELD, m_joinPointClassName, INTERCEPTOR_INDEX_FIELD_NAME, I);
cv.visitInsn(DUP_X1);
cv.visitInsn(ICONST_1);
cv.visitInsn(IADD);
cv.visitFieldInsn(PUTFIELD, m_joinPointClassName, INTERCEPTOR_INDEX_FIELD_NAME, I);
cv.visitInsn(AALOAD);
cv.visitVarInsn(ALOAD, 0);
cv.visitMethodInsn(
INVOKEINTERFACE,
AROUND_ADVICE_CLASS_NAME,
INTERCEPT_INVOKE_METHOD_NAME,
AROUND_ADVICE_INVOKE_METHOD_SIGNATURE
);
cv.visitInsn(ARETURN);
cv.visitLabel(ifStatementLabel);
}
/**
* Creates invocations fo the before interceptors.
*
* @param cv
* @param joinPointInstanceIndex
* @param registerDepth
*/
private void createBeforeInterceptorInvocations(final CodeVisitor cv,
final int joinPointInstanceIndex,
final int registerDepth) {
final int loopIndex = registerDepth + 1;
cv.visitInsn(ICONST_0);
cv.visitVarInsn(ISTORE, loopIndex);
Label loopStartLabel = new Label();
cv.visitLabel(loopStartLabel);
cv.visitVarInsn(ILOAD, loopIndex);
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitFieldInsn(
GETFIELD,
m_joinPointClassName,
NR_OF_BEFORE_INTERCEPTORS_FIELD_NAME,
I
);
Label loopCheckCondLabel = new Label();
cv.visitJumpInsn(IF_ICMPGE, loopCheckCondLabel);
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitFieldInsn(
GETFIELD,
m_joinPointClassName,
BEFORE_INTERCEPTORS_FIELD_NAME,
BEFORE_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitVarInsn(ILOAD, loopIndex);
cv.visitInsn(AALOAD);
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitMethodInsn(
INVOKEINTERFACE,
BEFORE_ADVICE_CLASS_NAME,
INTERCEPT_INVOKE_METHOD_NAME,
BEFORE_ADVICE_INVOKE_METHOD_SIGNATURE
);
cv.visitIincInsn(loopIndex, 1);
cv.visitJumpInsn(GOTO, loopStartLabel);
cv.visitLabel(loopCheckCondLabel);
}
/**
* Creates invocations fo the after finally interceptors.
*
* @param cv
* @param joinPointInstanceIndex
* @param registerDepth
*/
private void createAfterInterceptorInvocations(final CodeVisitor cv,
final int joinPointInstanceIndex,
final int registerDepth) {
final int loopIndex = registerDepth + 1;
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitFieldInsn(
GETFIELD,
m_joinPointClassName,
NR_OF_AFTER_INTERCEPTORS_FIELD_NAME,
I
);
cv.visitInsn(ICONST_1);
cv.visitInsn(ISUB);
cv.visitVarInsn(ISTORE, loopIndex);
Label loopLabel1 = new Label();
cv.visitLabel(loopLabel1);
cv.visitVarInsn(ILOAD, loopIndex);
Label loopLabel2 = new Label();
cv.visitJumpInsn(IFLT, loopLabel2);
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitFieldInsn(
GETFIELD,
m_joinPointClassName,
AFTER_INTERCEPTORS_FIELD_NAME,
AFTER_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitVarInsn(ILOAD, loopIndex);
cv.visitInsn(AALOAD);
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitMethodInsn(
INVOKEINTERFACE,
AFTER_ADVICE_CLASS_NAME,
INTERCEPT_INVOKE_METHOD_NAME,
AFTER_ADVICE_INVOKE_METHOD_SIGNATURE
);
cv.visitIincInsn(loopIndex, -1);
cv.visitJumpInsn(GOTO, loopLabel1);
cv.visitLabel(loopLabel2);
}
/**
* Creates invocations fo the after returning interceptors.
*
* @param cv
* @param joinPointInstanceIndex
* @param returnValueInstanceIndex
*/
private void createAfterReturningInterceptorInvocations(final CodeVisitor cv,
final int joinPointInstanceIndex,
final int returnValueInstanceIndex) {
final int loopIndex = returnValueInstanceIndex + 1;
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitFieldInsn(
GETFIELD,
m_joinPointClassName,
NR_OF_AFTER_RETURNING_INTERCEPTORS_FIELD_NAME,
I
);
cv.visitInsn(ICONST_1);
cv.visitInsn(ISUB);
cv.visitVarInsn(ISTORE, loopIndex);
Label loopLabel1 = new Label();
cv.visitLabel(loopLabel1);
cv.visitVarInsn(ILOAD, loopIndex);
Label loopLabel2 = new Label();
cv.visitJumpInsn(IFLT, loopLabel2);
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitFieldInsn(
GETFIELD,
m_joinPointClassName,
AFTER_RETURNING_INTERCEPTORS_FIELD_NAME,
AFTER_RETURNING_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitVarInsn(ILOAD, loopIndex);
cv.visitInsn(AALOAD);
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitVarInsn(ALOAD, returnValueInstanceIndex);
cv.visitMethodInsn(
INVOKEINTERFACE,
AFTER_RETURNING_ADVICE_CLASS_NAME,
INTERCEPT_INVOKE_METHOD_NAME,
AFTER_RETURNING_ADVICE_INVOKE_METHOD_SIGNATURE
);
cv.visitIincInsn(loopIndex, -1);
cv.visitJumpInsn(GOTO, loopLabel1);
cv.visitLabel(loopLabel2);
}
/**
* Creates invocations fo the after returning interceptors.
*
* @param cv
* @param joinPointInstanceIndex
* @param exceptionInstanceIndex
*/
private void createAfterThrowingInterceptorInvocations(final CodeVisitor cv,
final int joinPointInstanceIndex,
final int exceptionInstanceIndex) {
final int loopIndex = exceptionInstanceIndex + 1;
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitFieldInsn(
GETFIELD,
m_joinPointClassName,
NR_OF_AFTER_THROWING_INTERCEPTORS_FIELD_NAME,
I
);
cv.visitInsn(ICONST_1);
cv.visitInsn(ISUB);
cv.visitVarInsn(ISTORE, loopIndex);
Label loopLabel1 = new Label();
cv.visitLabel(loopLabel1);
cv.visitVarInsn(ILOAD, loopIndex);
Label loopLabel2 = new Label();
cv.visitJumpInsn(IFLT, loopLabel2);
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitFieldInsn(
GETFIELD,
m_joinPointClassName,
AFTER_THROWING_INTERCEPTORS_FIELD_NAME,
AFTER_THROWING_ADVICE_ARRAY_CLASS_SIGNATURE
);
cv.visitVarInsn(ILOAD, loopIndex);
cv.visitInsn(AALOAD);
cv.visitVarInsn(ALOAD, joinPointInstanceIndex);
cv.visitVarInsn(ALOAD, exceptionInstanceIndex);
cv.visitMethodInsn(
INVOKEINTERFACE,
AFTER_THROWING_ADVICE_CLASS_NAME,
INTERCEPT_INVOKE_METHOD_NAME,
AFTER_THROWING_ADVICE_INVOKE_METHOD_SIGNATURE
);
cv.visitIincInsn(loopIndex, -1);
cv.visitJumpInsn(GOTO, loopLabel1);
cv.visitLabel(loopLabel2);
}
/**
* Checks if the join point requires a proceed() method.
*
* @return
*/
protected boolean requiresProceedMethod() {
return m_hasAroundAdvices || m_isThisAdvisable;
}
private static class CustomProceedMethodStruct {
MethodInfo customProceed;
int[] adviceToTargetArgs;
public CustomProceedMethodStruct(MethodInfo customProceed, int[] adviceToTargetArgs) {
this.customProceed = customProceed;
this.adviceToTargetArgs = adviceToTargetArgs;
}
}
}