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org.aspectj.ajdt.internal.compiler.ast.ValidateAtAspectJAnnotationsVisitor Maven / Gradle / Ivy
/* *******************************************************************
* Copyright (c) 2005 IBM Corporation Ltd
* All rights reserved.
* This program and the accompanying materials are made available
* under the terms of the Eclipse Public License v1.0
* which accompanies this distribution and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Adrian Colyer initial implementation
* ******************************************************************/
package org.aspectj.ajdt.internal.compiler.ast;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.List;
import java.util.Stack;
import org.aspectj.ajdt.internal.compiler.lookup.EclipseFactory;
import org.aspectj.ajdt.internal.compiler.lookup.EclipseScope;
import org.aspectj.ajdt.internal.core.builder.EclipseSourceContext;
import org.aspectj.bridge.context.CompilationAndWeavingContext;
import org.aspectj.bridge.context.ContextToken;
import org.aspectj.org.eclipse.jdt.core.compiler.CharOperation;
import org.aspectj.org.eclipse.jdt.internal.compiler.ASTVisitor;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.Annotation;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.Argument;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.FieldDeclaration;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.MemberValuePair;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.MethodDeclaration;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.NameReference;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.NormalAnnotation;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.SingleMemberAnnotation;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.SingleTypeReference;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.StringLiteral;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.TypeReference;
import org.aspectj.org.eclipse.jdt.internal.compiler.impl.Constant;
import org.aspectj.org.eclipse.jdt.internal.compiler.lookup.Binding;
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.CompilationUnitScope;
import org.aspectj.org.eclipse.jdt.internal.compiler.lookup.FieldBinding;
import org.aspectj.org.eclipse.jdt.internal.compiler.lookup.MethodScope;
import org.aspectj.org.eclipse.jdt.internal.compiler.lookup.SourceTypeBinding;
import org.aspectj.org.eclipse.jdt.internal.compiler.lookup.TypeBinding;
import org.aspectj.weaver.AdviceKind;
import org.aspectj.weaver.AjAttribute;
import org.aspectj.weaver.ISourceContext;
import org.aspectj.weaver.ResolvedPointcutDefinition;
import org.aspectj.weaver.UnresolvedType;
import org.aspectj.weaver.patterns.AbstractPatternNodeVisitor;
import org.aspectj.weaver.patterns.FormalBinding;
import org.aspectj.weaver.patterns.IfPointcut;
import org.aspectj.weaver.patterns.ParserException;
import org.aspectj.weaver.patterns.PatternParser;
import org.aspectj.weaver.patterns.Pointcut;
public class ValidateAtAspectJAnnotationsVisitor extends ASTVisitor {
private static final char[] beforeAdviceSig = "Lorg/aspectj/lang/annotation/Before;".toCharArray();
private static final char[] afterAdviceSig = "Lorg/aspectj/lang/annotation/After;".toCharArray();
private static final char[] afterReturningAdviceSig = "Lorg/aspectj/lang/annotation/AfterReturning;".toCharArray();
private static final char[] afterThrowingAdviceSig = "Lorg/aspectj/lang/annotation/AfterThrowing;".toCharArray();
private static final char[] aroundAdviceSig = "Lorg/aspectj/lang/annotation/Around;".toCharArray();
private static final char[] pointcutSig = "Lorg/aspectj/lang/annotation/Pointcut;".toCharArray();
private static final char[] aspectSig = "Lorg/aspectj/lang/annotation/Aspect;".toCharArray();
private static final char[] declareParentsSig = "Lorg/aspectj/lang/annotation/DeclareParents;".toCharArray();
private static final char[] adviceNameSig = "Lorg/aspectj/lang/annotation/AdviceName;".toCharArray();
// private static final char[] orgAspectJLangAnnotation =
// "org/aspectj/lang/annotation/".toCharArray();
private static final char[] voidType = "void".toCharArray();
private static final char[] booleanType = "boolean".toCharArray();
private static final char[] joinPoint = "Lorg/aspectj/lang/JoinPoint;".toCharArray();
private static final char[] joinPointStaticPart = "Lorg/aspectj/lang/JoinPoint$StaticPart;".toCharArray();
private static final char[] joinPointEnclosingStaticPart = "Lorg/aspectj/lang/JoinPoint$EnclosingStaticPart;".toCharArray();
private static final char[] proceedingJoinPoint = "Lorg/aspectj/lang/ProceedingJoinPoint;".toCharArray();
// private static final char[][] adviceSigs = new char[][] {
// beforeAdviceSig, afterAdviceSig, afterReturningAdviceSig,
// afterThrowingAdviceSig, aroundAdviceSig };
private final CompilationUnitDeclaration unit;
private final Stack typeStack = new Stack();
private AspectJAnnotations ajAnnotations;
public ValidateAtAspectJAnnotationsVisitor(CompilationUnitDeclaration unit) {
this.unit = unit;
}
public boolean visit(TypeDeclaration localTypeDeclaration, BlockScope scope) {
typeStack.push(localTypeDeclaration);
ajAnnotations = new AspectJAnnotations(localTypeDeclaration.annotations);
checkTypeDeclaration(localTypeDeclaration);
return true;
}
public void endVisit(TypeDeclaration localTypeDeclaration, BlockScope scope) {
typeStack.pop();
}
public boolean visit(TypeDeclaration memberTypeDeclaration, ClassScope scope) {
typeStack.push(memberTypeDeclaration);
ajAnnotations = new AspectJAnnotations(memberTypeDeclaration.annotations);
checkTypeDeclaration(memberTypeDeclaration);
return true;
}
public void endVisit(TypeDeclaration memberTypeDeclaration, ClassScope scope) {
typeStack.pop();
}
public boolean visit(TypeDeclaration typeDeclaration, CompilationUnitScope scope) {
typeStack.push(typeDeclaration);
ajAnnotations = new AspectJAnnotations(typeDeclaration.annotations);
checkTypeDeclaration(typeDeclaration);
return true;
}
public void endVisit(TypeDeclaration typeDeclaration, CompilationUnitScope scope) {
typeStack.pop();
}
private void checkTypeDeclaration(TypeDeclaration typeDecl) {
ContextToken tok = CompilationAndWeavingContext.enteringPhase(
CompilationAndWeavingContext.VALIDATING_AT_ASPECTJ_ANNOTATIONS, typeDecl.name);
if (!(typeDecl instanceof AspectDeclaration)) {
if (ajAnnotations.hasAspectAnnotation) {
validateAspectDeclaration(typeDecl);
} else {
// check that class doesn't extend aspect
TypeReference parentRef = typeDecl.superclass;
if (parentRef != null) {
TypeBinding parentBinding = parentRef.resolvedType;
if (parentBinding instanceof SourceTypeBinding) {
SourceTypeBinding parentSTB = (SourceTypeBinding) parentBinding;
if (parentSTB.scope != null) {
TypeDeclaration parentDecl = parentSTB.scope.referenceContext;
if (isAspect(parentDecl)) {
typeDecl.scope.problemReporter().signalError(typeDecl.sourceStart, typeDecl.sourceEnd,
"a class cannot extend an aspect");
}
}
}
}
}
} else {
// check that aspect doesn't have @Aspect annotation, we've already
// added on ourselves.
if (ajAnnotations.hasMultipleAspectAnnotations) {
typeDecl.scope.problemReporter().signalError(typeDecl.sourceStart, typeDecl.sourceEnd,
"aspects cannot have @Aspect annotation");
}
}
CompilationAndWeavingContext.leavingPhase(tok);
}
public boolean visit(FieldDeclaration fieldDeclaration, MethodScope scope) {
ajAnnotations = new AspectJAnnotations(fieldDeclaration.annotations);
if (ajAnnotations.hasDeclareParents && !insideAspect()) {
scope.problemReporter().signalError(fieldDeclaration.sourceStart, fieldDeclaration.sourceEnd,
"DeclareParents can only be used inside an aspect type");
}
return true;
}
public boolean visit(MethodDeclaration methodDeclaration, ClassScope scope) {
if (methodDeclaration.hasErrors()) {
return false;
}
ContextToken tok = CompilationAndWeavingContext.enteringPhase(
CompilationAndWeavingContext.VALIDATING_AT_ASPECTJ_ANNOTATIONS, methodDeclaration.selector);
ajAnnotations = new AspectJAnnotations(methodDeclaration.annotations);
if (!methodDeclaration.getClass().equals(AjMethodDeclaration.class)) {
// simply test for innapropriate use of annotations on code-style
// members
if (methodDeclaration instanceof PointcutDeclaration) {
if (ajAnnotations.hasMultiplePointcutAnnotations || ajAnnotations.hasAdviceAnnotation
|| ajAnnotations.hasAspectAnnotation || ajAnnotations.hasAdviceNameAnnotation) {
methodDeclaration.scope.problemReporter().signalError(methodDeclaration.sourceStart,
methodDeclaration.sourceEnd, "@AspectJ annotations cannot be declared on this aspect member");
}
} else if (methodDeclaration instanceof AdviceDeclaration) {
if (ajAnnotations.hasMultipleAdviceAnnotations || ajAnnotations.hasAspectAnnotation
|| ajAnnotations.hasPointcutAnnotation) {
methodDeclaration.scope.problemReporter().signalError(methodDeclaration.sourceStart,
methodDeclaration.sourceEnd, "Only @AdviceName AspectJ annotation allowed on advice");
}
} else {
if (ajAnnotations.hasAspectJAnnotations()) {
methodDeclaration.scope.problemReporter().signalError(methodDeclaration.sourceStart,
methodDeclaration.sourceEnd, "@AspectJ annotations cannot be declared on this aspect member");
}
}
CompilationAndWeavingContext.leavingPhase(tok);
return false;
}
if (ajAnnotations.hasAdviceAnnotation) {
validateAdvice(methodDeclaration);
} else if (ajAnnotations.hasPointcutAnnotation) {
convertToPointcutDeclaration(methodDeclaration, scope);
}
CompilationAndWeavingContext.leavingPhase(tok);
return false;
}
// private boolean isAspectJAnnotation(Annotation ann) {
// if (ann.resolvedType == null) return false;
// char[] sig = ann.resolvedType.signature();
// return CharOperation.contains(orgAspectJLangAnnotation, sig);
// }
private boolean insideAspect() {
if (typeStack.empty())
return false;
TypeDeclaration typeDecl = (TypeDeclaration) typeStack.peek();
return isAspect(typeDecl);
}
private boolean isAspect(TypeDeclaration typeDecl) {
if (typeDecl instanceof AspectDeclaration)
return true;
return new AspectJAnnotations(typeDecl.annotations).hasAspectAnnotation;
}
/**
* aspect must be public nested aspect must be static cannot extend a concrete aspect pointcut in perclause must be good.
*/
private void validateAspectDeclaration(TypeDeclaration typeDecl) {
if (typeStack.size() > 1) {
// it's a nested aspect
if (!Modifier.isStatic(typeDecl.modifiers)) {
typeDecl.scope.problemReporter().signalError(typeDecl.sourceStart, typeDecl.sourceEnd,
"inner aspects must be static");
return;
}
}
SourceTypeBinding binding = typeDecl.binding;
if (binding != null) {
if (binding.isEnum() || binding.isInterface() || binding.isAnnotationType()) {
typeDecl.scope.problemReporter().signalError(typeDecl.sourceStart, typeDecl.sourceEnd,
"only classes can have an @Aspect annotation");
}
}
// FIXME AV - do we really want that
// if (!Modifier.isPublic(typeDecl.modifiers)) {
// typeDecl.scope.problemReporter().signalError(typeDecl.sourceStart,
// typeDecl.sourceEnd,"@Aspect class must be public");
// }
TypeReference parentRef = typeDecl.superclass;
if (parentRef != null) {
TypeBinding parentBinding = parentRef.resolvedType;
if (parentBinding instanceof SourceTypeBinding) {
SourceTypeBinding parentSTB = (SourceTypeBinding) parentBinding;
if (parentSTB.scope != null) { // scope is null if its a
// binarytypebinding (in AJ
// world, thats a subclass of
// SourceTypeBinding)
TypeDeclaration parentDecl = parentSTB.scope.referenceContext;
if (isAspect(parentDecl) && !Modifier.isAbstract(parentDecl.modifiers)) {
typeDecl.scope.problemReporter().signalError(typeDecl.sourceStart, typeDecl.sourceEnd,
"cannot extend a concrete aspect");
}
}
}
}
Annotation aspectAnnotation = ajAnnotations.aspectAnnotation;
int[] pcLoc = new int[2];
String perClause = getStringLiteralFor("value", aspectAnnotation, pcLoc);
// AspectDeclaration aspectDecl = new
// AspectDeclaration(typeDecl.compilationResult);
try {
if (perClause != null && !perClause.equals("")) {
ISourceContext context = new EclipseSourceContext(unit.compilationResult, pcLoc[0]);
Pointcut pc = new PatternParser(perClause, context).maybeParsePerClause();
FormalBinding[] bindings = new FormalBinding[0];
if (pc != null)
pc.resolve(new EclipseScope(bindings, typeDecl.scope));
}
} catch (ParserException pEx) {
typeDecl.scope.problemReporter().parseError(pcLoc[0] + pEx.getLocation().getStart(),
pcLoc[0] + pEx.getLocation().getEnd(), -1, perClause.toCharArray(), perClause,
new String[] { pEx.getMessage() });
}
}
/**
* 1) Advice must be public 2) Advice must have a void return type if not around advice 3) Advice must not have any other @AspectJ
* annotations 4) After throwing advice must declare the thrown formal 5) After returning advice must declare the returning
* formal 6) Advice must not be static
*/
private void validateAdvice(MethodDeclaration methodDeclaration) {
if (!insideAspect()) {
methodDeclaration.scope.problemReporter().signalError(methodDeclaration.sourceStart, methodDeclaration.sourceEnd,
"Advice must be declared inside an aspect type");
}
if (!Modifier.isPublic(methodDeclaration.modifiers)) {
methodDeclaration.scope.problemReporter().signalError(methodDeclaration.sourceStart, methodDeclaration.sourceEnd,
"advice must be public");
}
if (Modifier.isStatic(methodDeclaration.modifiers)) {
methodDeclaration.scope.problemReporter().signalError(methodDeclaration.sourceStart, methodDeclaration.sourceEnd,
"advice can not be declared static");
}
if (ajAnnotations.hasMultipleAdviceAnnotations) {
methodDeclaration.scope.problemReporter().disallowedTargetForAnnotation(ajAnnotations.duplicateAdviceAnnotation);
}
if (ajAnnotations.hasPointcutAnnotation) {
methodDeclaration.scope.problemReporter().disallowedTargetForAnnotation(ajAnnotations.pointcutAnnotation);
}
if (ajAnnotations.hasAspectAnnotation) {
methodDeclaration.scope.problemReporter().disallowedTargetForAnnotation(ajAnnotations.aspectAnnotation);
}
if (ajAnnotations.hasAdviceNameAnnotation) {
methodDeclaration.scope.problemReporter().disallowedTargetForAnnotation(ajAnnotations.adviceNameAnnotation);
}
if (ajAnnotations.adviceKind != AdviceKind.Around) {
ensureVoidReturnType(methodDeclaration);
}
if (ajAnnotations.adviceKind == AdviceKind.AfterThrowing) {
int[] throwingLocation = new int[2];
String thrownFormal = getStringLiteralFor("throwing", ajAnnotations.adviceAnnotation, throwingLocation);
if (thrownFormal != null) {
// Argument[] arguments = methodDeclaration.arguments;
if (!toArgumentNames(methodDeclaration.arguments).contains(thrownFormal)) {
methodDeclaration.scope.problemReporter().signalError(methodDeclaration.sourceStart,
methodDeclaration.sourceEnd,
"throwing formal '" + thrownFormal + "' must be declared as a parameter in the advice signature");
}
}
}
if (ajAnnotations.adviceKind == AdviceKind.AfterReturning) {
int[] throwingLocation = new int[2];
String returningFormal = getStringLiteralFor("returning", ajAnnotations.adviceAnnotation, throwingLocation);
if (returningFormal != null) {
if (!toArgumentNames(methodDeclaration.arguments).contains(returningFormal)) {
methodDeclaration.scope.problemReporter().signalError(methodDeclaration.sourceStart,
methodDeclaration.sourceEnd,
"returning formal '" + returningFormal + "' must be declared as a parameter in the advice signature");
}
}
}
resolveAndSetPointcut(methodDeclaration, ajAnnotations.adviceAnnotation);
}
/**
* Get the argument names as a string list
*
* @param arguments
* @return argument names (possibly empty)
*/
private List toArgumentNames(Argument[] arguments) {
List names = new ArrayList();
if (arguments == null) {
return names;
} else {
for (int i = 0; i < arguments.length; i++) {
names.add(new String(arguments[i].name));
}
return names;
}
}
private void resolveAndSetPointcut(MethodDeclaration methodDeclaration, Annotation adviceAnn) {
int[] pcLocation = new int[2];
String pointcutExpression = getStringLiteralFor("pointcut", adviceAnn, pcLocation);
if (pointcutExpression == null)
pointcutExpression = getStringLiteralFor("value", adviceAnn, pcLocation);
try {
// +1 to give first char of pointcut string
ISourceContext context = new EclipseSourceContext(unit.compilationResult, pcLocation[0] + 1);
if (pointcutExpression == null) {
methodDeclaration.scope.problemReporter().signalError(methodDeclaration.sourceStart,
methodDeclaration.sourceEnd, "the advice annotation must specify a pointcut value");
return;
}
PatternParser pp = new PatternParser(pointcutExpression, context);
Pointcut pc = pp.parsePointcut();
pp.checkEof();
FormalBinding[] bindings = buildFormalAdviceBindingsFrom(methodDeclaration);
pc.resolve(new EclipseScope(bindings, methodDeclaration.scope));
EclipseFactory factory = EclipseFactory.fromScopeLookupEnvironment(methodDeclaration.scope);
// now create a ResolvedPointcutDefinition,make an attribute out of
// it, and add it to the method
UnresolvedType[] paramTypes = new UnresolvedType[bindings.length];
for (int i = 0; i < paramTypes.length; i++)
paramTypes[i] = bindings[i].getType();
ResolvedPointcutDefinition resPcutDef = new ResolvedPointcutDefinition(factory.fromBinding(((TypeDeclaration) typeStack
.peek()).binding), methodDeclaration.modifiers, "anonymous", paramTypes, pc);
AjAttribute attr = new AjAttribute.PointcutDeclarationAttribute(resPcutDef);
((AjMethodDeclaration) methodDeclaration).addAttribute(new EclipseAttributeAdapter(attr));
} catch (ParserException pEx) {
methodDeclaration.scope.problemReporter().parseError(pcLocation[0] + pEx.getLocation().getStart(),
pcLocation[0] + pEx.getLocation().getEnd(), -1, pointcutExpression.toCharArray(), pointcutExpression,
new String[] { pEx.getMessage() });
}
}
private void ensureVoidReturnType(MethodDeclaration methodDeclaration) {
boolean returnsVoid = true;
if ((methodDeclaration.returnType instanceof SingleTypeReference)) {
SingleTypeReference retType = (SingleTypeReference) methodDeclaration.returnType;
if (!CharOperation.equals(voidType, retType.token)) {
returnsVoid = false;
}
} else {
returnsVoid = false;
}
if (!returnsVoid) {
methodDeclaration.scope.problemReporter().signalError(methodDeclaration.returnType.sourceStart,
methodDeclaration.returnType.sourceEnd, "This advice must return void");
}
}
private FormalBinding[] buildFormalAdviceBindingsFrom(MethodDeclaration mDecl) {
if (mDecl.arguments == null)
return new FormalBinding[0];
if (mDecl.binding == null)
return new FormalBinding[0];
EclipseFactory factory = EclipseFactory.fromScopeLookupEnvironment(mDecl.scope);
String extraArgName = maybeGetExtraArgName();
if (extraArgName == null)
extraArgName = "";
FormalBinding[] ret = new FormalBinding[mDecl.arguments.length];
for (int i = 0; i < mDecl.arguments.length; i++) {
Argument arg = mDecl.arguments[i];
String name = new String(arg.name);
TypeBinding argTypeBinding = mDecl.binding.parameters[i];
UnresolvedType type = factory.fromBinding(argTypeBinding);
if (CharOperation.equals(joinPoint, argTypeBinding.signature())
|| CharOperation.equals(joinPointStaticPart, argTypeBinding.signature())
|| CharOperation.equals(joinPointEnclosingStaticPart, argTypeBinding.signature())
|| CharOperation.equals(proceedingJoinPoint, argTypeBinding.signature()) || name.equals(extraArgName)) {
ret[i] = new FormalBinding.ImplicitFormalBinding(type, name, i);
} else {
ret[i] = new FormalBinding(type, name, i, arg.sourceStart, arg.sourceEnd);
}
}
return ret;
}
private String maybeGetExtraArgName() {
String argName = null;
if (ajAnnotations.adviceKind == AdviceKind.AfterReturning) {
argName = getStringLiteralFor("returning", ajAnnotations.adviceAnnotation, new int[2]);
} else if (ajAnnotations.adviceKind == AdviceKind.AfterThrowing) {
argName = getStringLiteralFor("throwing", ajAnnotations.adviceAnnotation, new int[2]);
}
return argName;
}
private String getStringLiteralFor(String memberName, Annotation inAnnotation, int[] location) {
if (inAnnotation instanceof SingleMemberAnnotation && memberName.equals("value")) {
SingleMemberAnnotation sma = (SingleMemberAnnotation) inAnnotation;
if (sma.memberValue instanceof StringLiteral) {
StringLiteral sv = (StringLiteral) sma.memberValue;
location[0] = sv.sourceStart;
location[1] = sv.sourceEnd;
return new String(sv.source());
} else if (sma.memberValue instanceof NameReference
&& (((NameReference) sma.memberValue).binding instanceof FieldBinding)) {
Binding b = ((NameReference) sma.memberValue).binding;
Constant c = ((FieldBinding) b).constant();
return c.stringValue();
}
}
if (!(inAnnotation instanceof NormalAnnotation))
return null;
NormalAnnotation ann = (NormalAnnotation) inAnnotation;
MemberValuePair[] mvps = ann.memberValuePairs;
if (mvps == null)
return null;
for (int i = 0; i < mvps.length; i++) {
if (CharOperation.equals(memberName.toCharArray(), mvps[i].name)) {
if (mvps[i].value instanceof StringLiteral) {
StringLiteral sv = (StringLiteral) mvps[i].value;
location[0] = sv.sourceStart;
location[1] = sv.sourceEnd;
return new String(sv.source());
}
}
}
return null;
}
private void convertToPointcutDeclaration(MethodDeclaration methodDeclaration, ClassScope scope) {
TypeDeclaration typeDecl = (TypeDeclaration) typeStack.peek();
if (typeDecl.binding != null) {
if (!typeDecl.binding.isClass()) {
methodDeclaration.scope.problemReporter().signalError(methodDeclaration.sourceStart, methodDeclaration.sourceEnd,
"pointcuts can only be declared in a class or an aspect");
}
}
if (methodDeclaration.thrownExceptions != null && methodDeclaration.thrownExceptions.length > 0) {
methodDeclaration.scope.problemReporter().signalError(methodDeclaration.sourceStart, methodDeclaration.sourceEnd,
"pointcuts cannot throw exceptions!");
}
PointcutDeclaration pcDecl = new PointcutDeclaration(unit.compilationResult);
copyAllFields(methodDeclaration, pcDecl);
if (ajAnnotations.hasAdviceAnnotation) {
methodDeclaration.scope.problemReporter().disallowedTargetForAnnotation(ajAnnotations.adviceAnnotation);
}
if (ajAnnotations.hasAspectAnnotation) {
methodDeclaration.scope.problemReporter().disallowedTargetForAnnotation(ajAnnotations.aspectAnnotation);
}
if (ajAnnotations.hasAdviceNameAnnotation) {
methodDeclaration.scope.problemReporter().disallowedTargetForAnnotation(ajAnnotations.adviceNameAnnotation);
}
boolean noValueSupplied = true;
boolean containsIfPcd = false;
int[] pcLocation = new int[2];
String pointcutExpression = getStringLiteralFor("value", ajAnnotations.pointcutAnnotation, pcLocation);
try {
ISourceContext context = new EclipseSourceContext(unit.compilationResult, pcLocation[0]);
Pointcut pc = null;// abstract
if (pointcutExpression == null || pointcutExpression.length() == 0) {
noValueSupplied = true; // matches nothing pointcut
} else {
noValueSupplied = false;
pc = new PatternParser(pointcutExpression, context).parsePointcut();
}
pcDecl.pointcutDesignator = (pc == null) ? null : new PointcutDesignator(pc);
pcDecl.setGenerateSyntheticPointcutMethod();
TypeDeclaration onType = (TypeDeclaration) typeStack.peek();
pcDecl.postParse(onType);
// EclipseFactory factory =
// EclipseFactory.fromScopeLookupEnvironment
// (methodDeclaration.scope);
// int argsLength = methodDeclaration.arguments == null ? 0 :
// methodDeclaration.arguments.length;
FormalBinding[] bindings = buildFormalAdviceBindingsFrom(methodDeclaration);
// FormalBinding[] bindings = new FormalBinding[argsLength];
// for (int i = 0, len = bindings.length; i < len; i++) {
// Argument arg = methodDeclaration.arguments[i];
// String name = new String(arg.name);
// UnresolvedType type =
// factory.fromBinding(methodDeclaration.binding.parameters[i]);
// bindings[i] = new FormalBinding(type, name, i, arg.sourceStart,
// arg.sourceEnd, "unknown");
// }
swap(onType, methodDeclaration, pcDecl);
if (pc != null) {
// has an expression
EclipseScope eScope = new EclipseScope(bindings, methodDeclaration.scope);
char[] packageName = null;
if (typeDecl.binding != null && typeDecl.binding.getPackage() != null) {
packageName = typeDecl.binding.getPackage().readableName();
}
eScope.setLimitedImports(packageName);
pc.resolve(eScope);
HasIfPCDVisitor ifFinder = new HasIfPCDVisitor();
pc.traverse(ifFinder, null);
containsIfPcd = ifFinder.containsIfPcd;
}
} catch (ParserException pEx) {
methodDeclaration.scope.problemReporter().parseError(pcLocation[0] + pEx.getLocation().getStart(),
pcLocation[0] + pEx.getLocation().getEnd(), -1, pointcutExpression.toCharArray(), pointcutExpression,
new String[] { pEx.getMessage() });
}
boolean returnsVoid = false;
boolean returnsBoolean = false;
if ((methodDeclaration.returnType instanceof SingleTypeReference)) {
SingleTypeReference retType = (SingleTypeReference) methodDeclaration.returnType;
if (CharOperation.equals(voidType, retType.token))
returnsVoid = true;
if (CharOperation.equals(booleanType, retType.token))
returnsBoolean = true;
}
if (!returnsVoid && !containsIfPcd) {
methodDeclaration.scope.problemReporter().signalError(methodDeclaration.returnType.sourceStart,
methodDeclaration.returnType.sourceEnd,
"Methods annotated with @Pointcut must return void unless the pointcut contains an if() expression");
}
if (!returnsBoolean && containsIfPcd) {
methodDeclaration.scope.problemReporter().signalError(methodDeclaration.returnType.sourceStart,
methodDeclaration.returnType.sourceEnd,
"Methods annotated with @Pointcut must return boolean when the pointcut contains an if() expression");
}
if (methodDeclaration.statements != null && methodDeclaration.statements.length > 0 && !containsIfPcd) {
methodDeclaration.scope.problemReporter()
.signalError(methodDeclaration.returnType.sourceStart, methodDeclaration.returnType.sourceEnd,
"Pointcuts without an if() expression should have an empty method body");
}
if (pcDecl.pointcutDesignator == null) {
if (Modifier.isAbstract(methodDeclaration.modifiers) || noValueSupplied // this
// is
// a
// matches
// nothing
// pointcut
// those 2 checks makes sense for aop.xml concretization but NOT for
// regular abstraction of pointcut
// && returnsVoid
// && (methodDeclaration.arguments == null ||
// methodDeclaration.arguments.length == 0)) {
) {
// fine
} else {
methodDeclaration.scope.problemReporter().signalError(methodDeclaration.returnType.sourceStart,
methodDeclaration.returnType.sourceEnd,
"Method annotated with @Pointcut() for abstract pointcut must be abstract");
}
} else if (Modifier.isAbstract(methodDeclaration.modifiers)) {
methodDeclaration.scope.problemReporter().signalError(methodDeclaration.returnType.sourceStart,
methodDeclaration.returnType.sourceEnd,
"Method annotated with non abstract @Pointcut(\"" + pointcutExpression + "\") is abstract");
}
}
private void copyAllFields(MethodDeclaration from, MethodDeclaration to) {
to.annotations = from.annotations;
to.arguments = from.arguments;
to.binding = from.binding;
to.bits = from.bits;
to.bodyEnd = from.bodyEnd;
to.bodyStart = from.bodyStart;
to.declarationSourceEnd = from.declarationSourceEnd;
to.declarationSourceStart = from.declarationSourceStart;
to.explicitDeclarations = from.explicitDeclarations;
to.ignoreFurtherInvestigation = from.ignoreFurtherInvestigation;
to.javadoc = from.javadoc;
to.modifiers = from.modifiers;
to.modifiersSourceStart = from.modifiersSourceStart;
to.returnType = from.returnType;
to.scope = from.scope;
to.selector = from.selector;
to.sourceEnd = from.sourceEnd;
to.sourceStart = from.sourceStart;
to.statements = from.statements;
to.thrownExceptions = from.thrownExceptions;
to.typeParameters = from.typeParameters;
}
private void swap(TypeDeclaration inType, MethodDeclaration thisDeclaration, MethodDeclaration forThatDeclaration) {
for (int i = 0; i < inType.methods.length; i++) {
if (inType.methods[i] == thisDeclaration) {
inType.methods[i] = forThatDeclaration;
break;
}
}
}
private static class AspectJAnnotations {
boolean hasAdviceAnnotation = false;
boolean hasPointcutAnnotation = false;
boolean hasAspectAnnotation = false;
boolean hasAdviceNameAnnotation = false;
boolean hasDeclareParents = false;
boolean hasMultipleAdviceAnnotations = false;
boolean hasMultiplePointcutAnnotations = false;
boolean hasMultipleAspectAnnotations = false;
AdviceKind adviceKind = null;
Annotation adviceAnnotation = null;
Annotation pointcutAnnotation = null;
Annotation aspectAnnotation = null;
Annotation adviceNameAnnotation = null;
Annotation duplicateAdviceAnnotation = null;
Annotation duplicatePointcutAnnotation = null;
Annotation duplicateAspectAnnotation = null;
public AspectJAnnotations(Annotation[] annotations) {
if (annotations == null)
return;
for (int i = 0; i < annotations.length; i++) {
if (annotations[i].resolvedType == null)
continue; // user messed up annotation declaration
char[] sig = annotations[i].resolvedType.signature();
if (CharOperation.equals(afterAdviceSig, sig)) {
adviceKind = AdviceKind.After;
addAdviceAnnotation(annotations[i]);
} else if (CharOperation.equals(afterReturningAdviceSig, sig)) {
adviceKind = AdviceKind.AfterReturning;
addAdviceAnnotation(annotations[i]);
} else if (CharOperation.equals(afterThrowingAdviceSig, sig)) {
adviceKind = AdviceKind.AfterThrowing;
addAdviceAnnotation(annotations[i]);
} else if (CharOperation.equals(beforeAdviceSig, sig)) {
adviceKind = AdviceKind.Before;
addAdviceAnnotation(annotations[i]);
} else if (CharOperation.equals(aroundAdviceSig, sig)) {
adviceKind = AdviceKind.Around;
addAdviceAnnotation(annotations[i]);
} else if (CharOperation.equals(adviceNameSig, sig)) {
hasAdviceNameAnnotation = true;
adviceNameAnnotation = annotations[i];
} else if (CharOperation.equals(declareParentsSig, sig)) {
hasDeclareParents = true;
} else if (CharOperation.equals(aspectSig, sig)) {
if (hasAspectAnnotation) {
hasMultipleAspectAnnotations = true;
duplicateAspectAnnotation = annotations[i];
} else {
hasAspectAnnotation = true;
aspectAnnotation = annotations[i];
}
} else if (CharOperation.equals(pointcutSig, sig)) {
if (hasPointcutAnnotation) {
hasMultiplePointcutAnnotations = true;
duplicatePointcutAnnotation = annotations[i];
} else {
hasPointcutAnnotation = true;
pointcutAnnotation = annotations[i];
}
}
}
}
public boolean hasAspectJAnnotations() {
return hasAdviceAnnotation || hasPointcutAnnotation || hasAdviceNameAnnotation || hasAspectAnnotation;
}
private void addAdviceAnnotation(Annotation annotation) {
if (!hasAdviceAnnotation) {
hasAdviceAnnotation = true;
adviceAnnotation = annotation;
} else {
hasMultipleAdviceAnnotations = true;
duplicateAdviceAnnotation = annotation;
}
}
}
private static class HasIfPCDVisitor extends AbstractPatternNodeVisitor {
public boolean containsIfPcd = false;
public Object visit(IfPointcut node, Object data) {
containsIfPcd = true;
return data;
}
}
}
