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AspectJ tools most notably contains the AspectJ compiler (AJC). AJC applies aspects to Java classes during
compilation, fully replacing Javac for plain Java classes and also compiling native AspectJ or annotation-based
@AspectJ syntax. Furthermore, AJC can weave aspects into existing class files in a post-compile binary weaving step.
This library is a superset of AspectJ weaver and hence also of AspectJ runtime.
/* *******************************************************************
* Copyright (c) 2002-2014 Palo Alto Research Center, Incorporated (PARC)
* and Contributors
* All rights reserved.
* This program and the accompanying materials are made available
* under the terms of the Eclipse Public License v 2.0
* which accompanies this distribution and is available at
* https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.txt
*
* Contributors:
* PARC initial implementation
* IBM ongoing maintenance
* ******************************************************************/
package org.aspectj.ajdt.internal.compiler.ast;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.CastExpression;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.Expression;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.MessageSend;
import org.aspectj.org.eclipse.jdt.internal.compiler.impl.Constant;
import org.aspectj.org.eclipse.jdt.internal.compiler.impl.ReferenceContext;
import org.aspectj.org.eclipse.jdt.internal.compiler.lookup.BlockScope;
import org.aspectj.org.eclipse.jdt.internal.compiler.lookup.ClassScope;
import org.aspectj.org.eclipse.jdt.internal.compiler.lookup.MethodScope;
import org.aspectj.org.eclipse.jdt.internal.compiler.lookup.Scope;
import org.aspectj.org.eclipse.jdt.internal.compiler.lookup.TypeBinding;
import org.aspectj.weaver.AdviceKind;
/**
* Used to represent any method call to a method named proceed. During
* resolvedType it will be determined if this is actually in the body
* of an around advice and has no receiver (must be a bare proceed call,
* see pr 53981), and if not this will be treated like any other
* MessageSend.
*
* @author Jim Hugunin
*/
public class Proceed extends MessageSend {
public boolean inInner = false;
public Proceed(MessageSend parent) {
super();
this.receiver = parent.receiver;
this.selector = parent.selector;
this.arguments = parent.arguments;
this.binding = parent.binding;
//this.codegenBinding = parent.codegenBinding;
this.syntheticAccessor = parent.syntheticAccessor;
this.expectedType = parent.expectedType;
this.nameSourcePosition = parent.nameSourcePosition;
this.actualReceiverType = parent.actualReceiverType;
//this.qualifyingType = parent.qualifyingType;
this.valueCast = parent.valueCast;
this.typeArguments = parent.typeArguments;
this.genericTypeArguments = parent.genericTypeArguments;
this.sourceStart = parent.sourceStart;
this.sourceEnd = parent.sourceEnd;
}
public TypeBinding resolveType(BlockScope scope) {
// find out if I'm really in an around body or not
//??? this could in theory be done by the parser, but that appears to be hard
AdviceDeclaration aroundDecl = findEnclosingAround(scope);
if (aroundDecl == null) {
return super.resolveType(scope);
}
constant = Constant.NotAConstant;
binding =/* codegenBinding = */aroundDecl.proceedMethodBinding;
this.actualReceiverType = binding.declaringClass;
int baseArgCount = 0;
if (arguments != null) {
baseArgCount = arguments.length;
Expression[] newArguments = new Expression[baseArgCount + 1];
System.arraycopy(arguments, 0, newArguments, 0, baseArgCount);
arguments = newArguments;
} else {
arguments = new Expression[1];
}
arguments[baseArgCount] = AstUtil.makeLocalVariableReference(aroundDecl.extraArgument.binding);
int declaredParameterCount = aroundDecl.getDeclaredParameterCount();
if (baseArgCount < declaredParameterCount) {
scope.problemReporter().signalError(this.sourceStart, this.sourceEnd,
"too few arguments to proceed, expected " + declaredParameterCount);
aroundDecl.ignoreFurtherInvestigation = true;
return null; //binding.returnType;
}
if (baseArgCount > declaredParameterCount) {
scope.problemReporter().signalError(this.sourceStart, this.sourceEnd,
"too many arguments to proceed, expected " + declaredParameterCount);
aroundDecl.ignoreFurtherInvestigation = true;
return null; //binding.returnType;
}
boolean argsContainCast = false;
for (Expression argument : arguments) {
if (argument instanceof CastExpression) argsContainCast = true;
// if (arguments[i].constant==null) arguments[i].constant=Constant.NotAConstant;
}
// TypeBinding[] argumentTypes = Binding.NO_PARAMETERS;
// if (this.arguments != null) {
// boolean argHasError = false; // typeChecks all arguments
// int length = this.arguments.length;
// argumentTypes = new TypeBinding[length];
// for (int i = 0; i < length; i++){
// Expression argument = this.arguments[i];
// if (argument instanceof CastExpression) {
// argument.bits |= ASTNode.DisableUnnecessaryCastCheck; // will check later on
// argsContainCast = true;
// }
// if ((argumentTypes[i] = argument.resolveType(scope)) == null){
// argHasError = true;
// }
// }
// if (argHasError) {
// if (this.actualReceiverType instanceof ReferenceBinding) {
// // record a best guess, for clients who need hint about possible method match
// TypeBinding[] pseudoArgs = new TypeBinding[length];
// for (int i = length; --i >= 0;)
// pseudoArgs[i] = argumentTypes[i] == null ? TypeBinding.NULL : argumentTypes[i]; // replace args with errors with null type
// this.binding =
// this.receiver.isImplicitThis()
// ? scope.getImplicitMethod(this.selector, pseudoArgs, this)
// : scope.findMethod((ReferenceBinding) this.actualReceiverType, this.selector, pseudoArgs, this);
// if (this.binding != null && !this.binding.isValidBinding()) {
// MethodBinding closestMatch = ((ProblemMethodBinding)this.binding).closestMatch;
// // record the closest match, for clients who may still need hint about possible method match
// if (closestMatch != null) {
// if (closestMatch.original().typeVariables != Binding.NO_TYPE_VARIABLES) { // generic method
// // shouldn't return generic method outside its context, rather convert it to raw method (175409)
// closestMatch = scope.environment().createParameterizedGenericMethod(closestMatch.original(), (RawTypeBinding)null);
// }
// this.binding = closestMatch;
// MethodBinding closestMatchOriginal = closestMatch.original();
// if ((closestMatchOriginal.isPrivate() || closestMatchOriginal.declaringClass.isLocalType()) && !scope.isDefinedInMethod(closestMatchOriginal)) {
// // ignore cases where method is used from within inside itself (e.g. direct recursions)
// closestMatchOriginal.modifiers |= ExtraCompilerModifiers.AccLocallyUsed;
// }
// }
// }
// }
// return null;
// }
// }
//
// checkInvocationArguments(scope, this.receiver, this.actualReceiverType, this.binding, this.arguments, argumentTypes, argsContainCast, this);
int len = arguments.length;
this.argumentTypes = (len == 0? TypeBinding.NO_TYPES:new TypeBinding[len]);
for (int i=0; i < len; i++) {
Expression arg = arguments[i];
argumentTypes[i] = arg.resolveType(scope);
if (argumentTypes[i] != null) {
TypeBinding paramType = binding.parameters[i];
if (!argumentTypes[i].isCompatibleWith(paramType)) {
scope.problemReporter().typeMismatchError(argumentTypes[i], paramType, arg, null);
}
}
}
checkInvocationArguments(scope,null,this.actualReceiverType,binding,
this.arguments,binding.parameters,argsContainCast,this);
this.resolvedType = binding.returnType;
return binding.returnType;
}
private AdviceDeclaration findEnclosingAround(Scope scope) {
if (scope == null) return null;
if (scope instanceof MethodScope) {
MethodScope methodScope = (MethodScope)scope;
ReferenceContext context = methodScope.referenceContext;
if (context instanceof AdviceDeclaration) {
AdviceDeclaration adviceDecl = (AdviceDeclaration)context;
if (adviceDecl.kind == AdviceKind.Around) {
// pr 53981 only match "bare" calls to proceed
if((receiver != null) && (!receiver.isThis())) { return null; }
adviceDecl.proceedCalls.add(this);
return adviceDecl;
} else {
return null;
}
}
} else if (scope instanceof ClassScope) {
inInner = true;
}
return findEnclosingAround(scope.parent);
}
}