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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 Palo Alto Research Center, Incorporated (PARC).
* 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
* ******************************************************************/
package org.aspectj.weaver.patterns;
import static org.aspectj.util.FuzzyBoolean.MAYBE;
import java.io.IOException;
import java.util.Iterator;
import java.util.Map;
import org.aspectj.bridge.ISourceLocation;
import org.aspectj.bridge.MessageUtil;
import org.aspectj.util.FuzzyBoolean;
import org.aspectj.weaver.Checker;
import org.aspectj.weaver.CompressingDataOutputStream;
import org.aspectj.weaver.ISourceContext;
import org.aspectj.weaver.IntMap;
import org.aspectj.weaver.Member;
import org.aspectj.weaver.ResolvedMember;
import org.aspectj.weaver.ResolvedType;
import org.aspectj.weaver.Shadow;
import org.aspectj.weaver.ShadowMunger;
import org.aspectj.weaver.UnresolvedType;
import org.aspectj.weaver.VersionedDataInputStream;
import org.aspectj.weaver.WeaverMessages;
import org.aspectj.weaver.World;
import org.aspectj.weaver.ast.Literal;
import org.aspectj.weaver.ast.Test;
public class KindedPointcut extends Pointcut {
Shadow.Kind kind;
private SignaturePattern signature;
private int matchKinds;
private ShadowMunger munger = null; // only set after concretization
public KindedPointcut(Shadow.Kind kind, SignaturePattern signature) {
this.kind = kind;
this.signature = signature;
this.pointcutKind = KINDED;
this.matchKinds = kind.bit;
}
public KindedPointcut(Shadow.Kind kind, SignaturePattern signature, ShadowMunger munger) {
this(kind, signature);
this.munger = munger;
}
public SignaturePattern getSignature() {
return signature;
}
@Override
public int couldMatchKinds() {
return matchKinds;
}
public boolean couldEverMatchSameJoinPointsAs(KindedPointcut other) {
if (this.kind != other.kind) {
return false;
}
String myName = signature.getName().maybeGetSimpleName();
String yourName = other.signature.getName().maybeGetSimpleName();
if (myName != null && yourName != null) {
if (!myName.equals(yourName)) {
return false;
}
}
if (signature.getParameterTypes().ellipsisCount == 0) {
if (other.signature.getParameterTypes().ellipsisCount == 0) {
if (signature.getParameterTypes().getTypePatterns().length != other.signature.getParameterTypes().getTypePatterns().length) {
return false;
}
}
}
return true;
}
@Override
public FuzzyBoolean fastMatch(FastMatchInfo info) {
// info.getKind()==null means all kinds
if (info.getKind() != null) {
if (info.getKind() != kind) {
return FuzzyBoolean.NO;
}
}
// KindedPointcut represents these join points:
// method-execution/ctor-execution/method-call/ctor-call/field-get/field-set/advice-execution/static-initialization
// initialization/pre-initialization
// Check if the global fastmatch flag is on - the flag can be removed (and this made default) once it proves stable!
if (info.world.optimizedMatching) {
// For now, just consider MethodExecution and Initialization
if ((kind == Shadow.MethodExecution || kind == Shadow.Initialization) && info.getKind() == null) {
boolean fastMatchingOnAspect = info.getType().isAspect();
// an Aspect may define ITDs, and although our signature declaring type pattern may not match on the
// aspect, the ITDs may have a different signature as we iterate through the members of the aspect. Let's not
// try and work through that here and just say MAYBE
if (fastMatchingOnAspect) {
return MAYBE;
}
// Aim here is to do the same test as is done for signature pattern declaring type pattern matching
if (this.getSignature().isExactDeclaringTypePattern()) {
ExactTypePattern typePattern = (ExactTypePattern) this.getSignature().getDeclaringType();
// Interface checks are more expensive, they could be anywhere...
ResolvedType patternExactType = typePattern.getResolvedExactType(info.world);
if (patternExactType.isInterface()) {
ResolvedType curr = info.getType();
Iterator hierarchyWalker = curr.getHierarchy(true, true);
boolean found = false;
while (hierarchyWalker.hasNext()) {
curr = hierarchyWalker.next();
if (typePattern.matchesStatically(curr)) {
found = true;
break;
}
}
if (!found) {
return FuzzyBoolean.NO;
}
} else if (patternExactType.isClass()) {
ResolvedType curr = info.getType();
do {
if (typePattern.matchesStatically(curr)) {
break;
}
curr = curr.getSuperclass();
} while (curr != null);
if (curr == null) {
return FuzzyBoolean.NO;
}
}
} else if (this.getSignature().getDeclaringType() instanceof AnyWithAnnotationTypePattern) {
// aim here is to say NO if the annotation is not possible in the hierarchy here
ResolvedType type = info.getType();
AnnotationTypePattern annotationTypePattern = ((AnyWithAnnotationTypePattern) getSignature().getDeclaringType())
.getAnnotationPattern();
if (annotationTypePattern instanceof ExactAnnotationTypePattern) {
ExactAnnotationTypePattern exactAnnotationTypePattern = (ExactAnnotationTypePattern) annotationTypePattern;
if (exactAnnotationTypePattern.getAnnotationValues() == null
|| exactAnnotationTypePattern.getAnnotationValues().size() == 0) {
ResolvedType annotationType = exactAnnotationTypePattern.getAnnotationType().resolve(info.world);
if (type.hasAnnotation(annotationType)) {
return FuzzyBoolean.MAYBE;
}
if (annotationType.isInheritedAnnotation()) {
// ok - we may be picking it up from further up the hierarchy (but only a super*class*)
ResolvedType toMatchAgainst = type.getSuperclass();
boolean found = false;
while (toMatchAgainst != null) {
if (toMatchAgainst.hasAnnotation(annotationType)) {
found = true;
break;
}
toMatchAgainst = toMatchAgainst.getSuperclass();
}
if (!found) {
return FuzzyBoolean.NO;
}
} else {
return FuzzyBoolean.NO;
}
}
}
// Optimization from 532033: passes AspectJ tests but breaks Spring Framework
// } else if (this.getSignature().getDeclaringType() instanceof WildTypePattern) {
// final WildTypePattern pattern = (WildTypePattern) this.getSignature().getDeclaringType();
// final ResolvedType type = info.getType();
// return pattern.matches(type, TypePattern.STATIC);
}
}
}
return FuzzyBoolean.MAYBE;
}
@Override
protected FuzzyBoolean matchInternal(Shadow shadow) {
if (shadow.getKind() != kind) {
return FuzzyBoolean.NO;
}
if (shadow.getKind() == Shadow.SynchronizationLock && kind == Shadow.SynchronizationLock) {
return FuzzyBoolean.YES;
}
if (shadow.getKind() == Shadow.SynchronizationUnlock && kind == Shadow.SynchronizationUnlock) {
return FuzzyBoolean.YES;
}
if (!signature.matches(shadow.getMatchingSignature(), shadow.getIWorld(), this.kind == Shadow.MethodCall)) {
if (kind == Shadow.MethodCall) {
warnOnConfusingSig(shadow);
// warnOnBridgeMethod(shadow);
}
return FuzzyBoolean.NO;
}
return FuzzyBoolean.YES;
}
// private void warnOnBridgeMethod(Shadow shadow) {
// if (shadow.getIWorld().getLint().noJoinpointsForBridgeMethods.isEnabled()) {
// ResolvedMember rm = shadow.getSignature().resolve(shadow.getIWorld());
// if (rm!=null) {
// int shadowModifiers = rm.getModifiers(); //shadow.getSignature().getModifiers(shadow.getIWorld());
// if (ResolvedType.hasBridgeModifier(shadowModifiers)) {
// shadow.getIWorld().getLint().noJoinpointsForBridgeMethods.signal(new String[]{},getSourceLocation(),
// new ISourceLocation[]{shadow.getSourceLocation()});
// }
// }
// }
// }
private void warnOnConfusingSig(Shadow shadow) {
// Don't do all this processing if we don't need to !
if (!shadow.getIWorld().getLint().unmatchedSuperTypeInCall.isEnabled()) {
return;
}
// no warnings for declare error/warning
if (munger instanceof Checker) {
return;
}
World world = shadow.getIWorld();
// warning never needed if the declaring type is any
UnresolvedType exactDeclaringType = signature.getDeclaringType().getExactType();
ResolvedType shadowDeclaringType = shadow.getSignature().getDeclaringType().resolve(world);
if (signature.getDeclaringType().isStar() || ResolvedType.isMissing(exactDeclaringType)
|| exactDeclaringType.resolve(world).isMissing()) {
return;
}
// warning not needed if match type couldn't ever be the declaring type
if (!shadowDeclaringType.isAssignableFrom(exactDeclaringType.resolve(world))) {
return;
}
// if the method in the declaring type is *not* visible to the
// exact declaring type then warning not needed.
ResolvedMember rm = shadow.getSignature().resolve(world);
// rm can be null in the case where we are binary weaving, and looking at a class with a call to a method in another class,
// but because of class incompatibilities, the method does not exist on the target class anymore.
// this will be reported elsewhere.
if (rm == null) {
return;
}
int shadowModifiers = rm.getModifiers();
if (!ResolvedType.isVisible(shadowModifiers, shadowDeclaringType, exactDeclaringType.resolve(world))) {
return;
}
if (!signature.getReturnType().matchesStatically(shadow.getSignature().getReturnType().resolve(world))) {
// Covariance issue...
// The reason we didn't match is that the type pattern for the pointcut (Car) doesn't match the
// return type for the specific declaration at the shadow. (FastCar Sub.getCar())
// XXX Put out another XLINT in this case?
return;
}
// PR60015 - Don't report the warning if the declaring type is object and 'this' is an interface
if (exactDeclaringType.resolve(world).isInterface() && shadowDeclaringType.equals(world.resolve("java.lang.Object"))) {
return;
}
SignaturePattern nonConfusingPattern = new SignaturePattern(signature.getKind(), signature.getModifiers(),
signature.getReturnType(), TypePattern.ANY, signature.getName(), signature.getParameterTypes(),
signature.getThrowsPattern(), signature.getAnnotationPattern());
if (nonConfusingPattern.matches(shadow.getSignature(), shadow.getIWorld(), true)) {
shadow.getIWorld().getLint().unmatchedSuperTypeInCall.signal(new String[] {
shadow.getSignature().getDeclaringType().toString(), signature.getDeclaringType().toString() },
this.getSourceLocation(), new ISourceLocation[] { shadow.getSourceLocation() });
}
}
@Override
public boolean equals(Object other) {
if (!(other instanceof KindedPointcut)) {
return false;
}
KindedPointcut o = (KindedPointcut) other;
return o.kind == this.kind && o.signature.equals(this.signature);
}
@Override
public int hashCode() {
int result = 17;
result = 37 * result + kind.hashCode();
result = 37 * result + signature.hashCode();
return result;
}
@Override
public String toString() {
StringBuilder buf = new StringBuilder();
buf.append(kind.getSimpleName());
buf.append("(");
buf.append(signature.toString());
buf.append(")");
return buf.toString();
}
@Override
public void postRead(ResolvedType enclosingType) {
signature.postRead(enclosingType);
}
@Override
public void write(CompressingDataOutputStream s) throws IOException {
s.writeByte(Pointcut.KINDED);
kind.write(s);
signature.write(s);
writeLocation(s);
}
public static Pointcut read(VersionedDataInputStream s, ISourceContext context) throws IOException {
Shadow.Kind kind = Shadow.Kind.read(s);
SignaturePattern sig = SignaturePattern.read(s, context);
KindedPointcut ret = new KindedPointcut(kind, sig);
ret.readLocation(context, s);
return ret;
}
// XXX note: there is no namebinding in any kinded pointcut.
// still might want to do something for better error messages
// We want to do something here to make sure we don't sidestep the parameter
// list in capturing type identifiers.
@Override
public void resolveBindings(IScope scope, Bindings bindings) {
if (kind == Shadow.Initialization) {
// scope.getMessageHandler().handleMessage(
// MessageUtil.error(
// "initialization unimplemented in 1.1beta1",
// this.getSourceLocation()));
}
signature = signature.resolveBindings(scope, bindings);
if (kind == Shadow.ConstructorExecution) { // Bug fix 60936
if (signature.getDeclaringType() != null) {
World world = scope.getWorld();
UnresolvedType exactType = signature.getDeclaringType().getExactType();
if (signature.getKind() == Member.CONSTRUCTOR && !ResolvedType.isMissing(exactType)
&& exactType.resolve(world).isInterface() && !signature.getDeclaringType().isIncludeSubtypes()) {
world.getLint().noInterfaceCtorJoinpoint.signal(exactType.toString(), getSourceLocation());
}
}
}
// no parameterized types
if (kind == Shadow.StaticInitialization) {
HasThisTypePatternTriedToSneakInSomeGenericOrParameterizedTypePatternMatchingStuffAnywhereVisitor visitor = new HasThisTypePatternTriedToSneakInSomeGenericOrParameterizedTypePatternMatchingStuffAnywhereVisitor();
signature.getDeclaringType().traverse(visitor, null);
if (visitor.wellHasItThen/* ? */()) {
scope.message(MessageUtil.error(WeaverMessages.format(WeaverMessages.NO_STATIC_INIT_JPS_FOR_PARAMETERIZED_TYPES),
getSourceLocation()));
}
}
// no parameterized types in declaring type position
if ((kind == Shadow.FieldGet) || (kind == Shadow.FieldSet)) {
HasThisTypePatternTriedToSneakInSomeGenericOrParameterizedTypePatternMatchingStuffAnywhereVisitor visitor = new HasThisTypePatternTriedToSneakInSomeGenericOrParameterizedTypePatternMatchingStuffAnywhereVisitor();
signature.getDeclaringType().traverse(visitor, null);
if (visitor.wellHasItThen/* ? */()) {
scope.message(MessageUtil.error(WeaverMessages.format(WeaverMessages.GET_AND_SET_DONT_SUPPORT_DEC_TYPE_PARAMETERS),
getSourceLocation()));
}
// fields can't have a void type!
UnresolvedType returnType = signature.getReturnType().getExactType();
if (returnType.equals(UnresolvedType.VOID)) {
scope.message(MessageUtil.error(WeaverMessages.format(WeaverMessages.FIELDS_CANT_HAVE_VOID_TYPE),
getSourceLocation()));
}
}
// no join points for initialization and preinitialization of parameterized types
// no throwable parameterized types
if ((kind == Shadow.Initialization) || (kind == Shadow.PreInitialization)) {
HasThisTypePatternTriedToSneakInSomeGenericOrParameterizedTypePatternMatchingStuffAnywhereVisitor visitor = new HasThisTypePatternTriedToSneakInSomeGenericOrParameterizedTypePatternMatchingStuffAnywhereVisitor();
signature.getDeclaringType().traverse(visitor, null);
if (visitor.wellHasItThen/* ? */()) {
scope.message(MessageUtil.error(WeaverMessages.format(WeaverMessages.NO_INIT_JPS_FOR_PARAMETERIZED_TYPES),
getSourceLocation()));
}
visitor = new HasThisTypePatternTriedToSneakInSomeGenericOrParameterizedTypePatternMatchingStuffAnywhereVisitor();
signature.getThrowsPattern().traverse(visitor, null);
if (visitor.wellHasItThen/* ? */()) {
scope.message(MessageUtil.error(WeaverMessages.format(WeaverMessages.NO_GENERIC_THROWABLES), getSourceLocation()));
}
}
// no parameterized types in declaring type position
// no throwable parameterized types
if ((kind == Shadow.MethodExecution) || (kind == Shadow.ConstructorExecution)) {
HasThisTypePatternTriedToSneakInSomeGenericOrParameterizedTypePatternMatchingStuffAnywhereVisitor visitor = new HasThisTypePatternTriedToSneakInSomeGenericOrParameterizedTypePatternMatchingStuffAnywhereVisitor();
signature.getDeclaringType().traverse(visitor, null);
if (visitor.wellHasItThen/* ? */()) {
scope.message(MessageUtil.error(
WeaverMessages.format(WeaverMessages.EXECUTION_DOESNT_SUPPORT_PARAMETERIZED_DECLARING_TYPES),
getSourceLocation()));
}
visitor = new HasThisTypePatternTriedToSneakInSomeGenericOrParameterizedTypePatternMatchingStuffAnywhereVisitor();
signature.getThrowsPattern().traverse(visitor, null);
if (visitor.wellHasItThen/* ? */()) {
scope.message(MessageUtil.error(WeaverMessages.format(WeaverMessages.NO_GENERIC_THROWABLES), getSourceLocation()));
}
}
// no parameterized types in declaring type position
// no throwable parameterized types
if ((kind == Shadow.MethodCall) || (kind == Shadow.ConstructorCall)) {
HasThisTypePatternTriedToSneakInSomeGenericOrParameterizedTypePatternMatchingStuffAnywhereVisitor visitor = new HasThisTypePatternTriedToSneakInSomeGenericOrParameterizedTypePatternMatchingStuffAnywhereVisitor();
signature.getDeclaringType().traverse(visitor, null);
if (visitor.wellHasItThen/* ? */()) {
scope.message(MessageUtil.error(
WeaverMessages.format(WeaverMessages.CALL_DOESNT_SUPPORT_PARAMETERIZED_DECLARING_TYPES),
getSourceLocation()));
}
visitor = new HasThisTypePatternTriedToSneakInSomeGenericOrParameterizedTypePatternMatchingStuffAnywhereVisitor();
signature.getThrowsPattern().traverse(visitor, null);
if (visitor.wellHasItThen/* ? */()) {
scope.message(MessageUtil.error(WeaverMessages.format(WeaverMessages.NO_GENERIC_THROWABLES), getSourceLocation()));
}
if (!scope.getWorld().isJoinpointArrayConstructionEnabled() && kind == Shadow.ConstructorCall
&& signature.getDeclaringType().isArray()) {
scope.message(MessageUtil.warn(WeaverMessages.format(WeaverMessages.NO_NEWARRAY_JOINPOINTS_BY_DEFAULT),
getSourceLocation()));
}
}
}
@Override
protected Test findResidueInternal(Shadow shadow, ExposedState state) {
return match(shadow).alwaysTrue() ? Literal.TRUE : Literal.FALSE;
}
@Override
public Pointcut concretize1(ResolvedType inAspect, ResolvedType declaringType, IntMap bindings) {
Pointcut ret = new KindedPointcut(kind, signature, bindings.getEnclosingAdvice());
ret.copyLocationFrom(this);
return ret;
}
@Override
public Pointcut parameterizeWith(Map typeVariableMap, World w) {
Pointcut ret = new KindedPointcut(kind, signature.parameterizeWith(typeVariableMap, w), munger);
ret.copyLocationFrom(this);
return ret;
}
public Shadow.Kind getKind() {
return kind;
}
@Override
public Object accept(PatternNodeVisitor visitor, Object data) {
return visitor.visit(this, data);
}
@Override
public Object traverse(PatternNodeVisitor visitor, Object data) {
Object ret = accept(visitor, data);
if (this.signature != null)
this.signature.traverse(visitor, ret);
return ret;
}
}