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- /* *******************************************************************
- * Copyright (c) 2004 IBM Corporation.
- * 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
- *
- * ******************************************************************/
- package org.aspectj.weaver.patterns;
-
- import java.io.IOException;
- import java.util.ArrayList;
- import java.util.Collections;
- import java.util.List;
- import java.util.Map;
-
- import org.aspectj.bridge.IMessage;
- import org.aspectj.bridge.MessageUtil;
- import org.aspectj.util.FuzzyBoolean;
- import org.aspectj.weaver.CompressingDataOutputStream;
- import org.aspectj.weaver.ISourceContext;
- import org.aspectj.weaver.IntMap;
- 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;
- import org.aspectj.weaver.ast.Var;
-
- /**
- * @author colyer
- *
- * TODO To change the template for this generated type comment go to Window - Preferences - Java - Code Style - Code
- * Templates
- */
- public class ThisOrTargetAnnotationPointcut extends NameBindingPointcut {
-
- private boolean isThis;
- private boolean alreadyWarnedAboutDEoW = false;
- private ExactAnnotationTypePattern annotationTypePattern;
- private String declarationText;
-
- private static final int thisKindSet;
- private static final int targetKindSet;
-
- static {
- int thisFlags = Shadow.ALL_SHADOW_KINDS_BITS;
- int targFlags = Shadow.ALL_SHADOW_KINDS_BITS;
- for (int i = 0; i < Shadow.SHADOW_KINDS.length; i++) {
- Shadow.Kind kind = Shadow.SHADOW_KINDS[i];
- if (kind.neverHasThis()) {
- thisFlags -= kind.bit;
- }
- if (kind.neverHasTarget()) {
- targFlags -= kind.bit;
- }
- }
- thisKindSet = thisFlags;
- targetKindSet = targFlags;
- }
-
- /**
- *
- */
- public ThisOrTargetAnnotationPointcut(boolean isThis, ExactAnnotationTypePattern type) {
- super();
- this.isThis = isThis;
- this.annotationTypePattern = type;
- this.pointcutKind = ATTHIS_OR_TARGET;
- buildDeclarationText();
- }
-
- public ThisOrTargetAnnotationPointcut(boolean isThis, ExactAnnotationTypePattern type, ShadowMunger munger) {
- this(isThis, type);
- }
-
- public ExactAnnotationTypePattern getAnnotationTypePattern() {
- return annotationTypePattern;
- }
-
- @Override
- public int couldMatchKinds() {
- return isThis ? thisKindSet : targetKindSet;
- }
-
- @Override
- public Pointcut parameterizeWith(Map<String,UnresolvedType> typeVariableMap, World w) {
- ExactAnnotationTypePattern newPattern = (ExactAnnotationTypePattern) this.annotationTypePattern.parameterizeWith(
- typeVariableMap, w);
- if (newPattern.getAnnotationType() instanceof ResolvedType) {
- verifyRuntimeRetention(newPattern.getResolvedAnnotationType());
- }
- ThisOrTargetAnnotationPointcut ret = new ThisOrTargetAnnotationPointcut(isThis,
- (ExactAnnotationTypePattern) annotationTypePattern.parameterizeWith(typeVariableMap, w));
- ret.copyLocationFrom(this);
- return ret;
- }
-
- /*
- * (non-Javadoc)
- *
- * @see org.aspectj.weaver.patterns.Pointcut#fastMatch(org.aspectj.weaver.patterns.FastMatchInfo)
- */
- @Override
- public FuzzyBoolean fastMatch(FastMatchInfo info) {
- return FuzzyBoolean.MAYBE;
- }
-
- /*
- * (non-Javadoc)
- *
- * @see org.aspectj.weaver.patterns.Pointcut#match(org.aspectj.weaver.Shadow)
- */
- @Override
- protected FuzzyBoolean matchInternal(Shadow shadow) {
- if (!couldMatch(shadow)) {
- return FuzzyBoolean.NO;
- }
- ResolvedType toMatchAgainst = (isThis ? shadow.getThisType() : shadow.getTargetType()).resolve(shadow.getIWorld());
- annotationTypePattern.resolve(shadow.getIWorld());
- if (annotationTypePattern.matchesRuntimeType(toMatchAgainst).alwaysTrue()) {
- return FuzzyBoolean.YES;
- } else {
- // a subtype may match at runtime
- return FuzzyBoolean.MAYBE;
- }
- }
-
- public boolean isThis() {
- return isThis;
- }
-
- /*
- * (non-Javadoc)
- *
- * @see org.aspectj.weaver.patterns.Pointcut#resolveBindings(org.aspectj.weaver.patterns.IScope,
- * org.aspectj.weaver.patterns.Bindings)
- */
- @Override
- protected void resolveBindings(IScope scope, Bindings bindings) {
- if (!scope.getWorld().isInJava5Mode()) {
- scope.message(MessageUtil.error(WeaverMessages.format(isThis ? WeaverMessages.ATTHIS_ONLY_SUPPORTED_AT_JAVA5_LEVEL
- : WeaverMessages.ATTARGET_ONLY_SUPPORTED_AT_JAVA5_LEVEL), getSourceLocation()));
- return;
- }
- annotationTypePattern = (ExactAnnotationTypePattern) annotationTypePattern.resolveBindings(scope, bindings, true);
- // must be either a Var, or an annotation type pattern
- // if annotationType does not have runtime retention, this is an error
- if (annotationTypePattern.annotationType == null) {
- // it's a formal with a binding error
- return;
- }
- ResolvedType rAnnotationType = (ResolvedType) annotationTypePattern.annotationType;
- if (rAnnotationType.isTypeVariableReference()) {
- return; // we'll deal with this next check when the type var is actually bound...
- }
- verifyRuntimeRetention(rAnnotationType);
-
- }
-
- private void verifyRuntimeRetention(ResolvedType rAnnotationType) {
- if (!(rAnnotationType.isAnnotationWithRuntimeRetention())) {
- IMessage m = MessageUtil.error(WeaverMessages.format(WeaverMessages.BINDING_NON_RUNTIME_RETENTION_ANNOTATION,
- rAnnotationType.getName()), getSourceLocation());
- rAnnotationType.getWorld().getMessageHandler().handleMessage(m);
- }
- }
-
- /*
- * (non-Javadoc)
- *
- * @see org.aspectj.weaver.patterns.Pointcut#concretize1(org.aspectj.weaver.ResolvedType, org.aspectj.weaver.IntMap)
- */
- @Override
- protected Pointcut concretize1(ResolvedType inAspect, ResolvedType declaringType, IntMap bindings) {
- if (isDeclare(bindings.getEnclosingAdvice())) {
- // Enforce rule about which designators are supported in declare
- if (!alreadyWarnedAboutDEoW) {
- inAspect.getWorld().showMessage(IMessage.ERROR,
- WeaverMessages.format(WeaverMessages.THIS_OR_TARGET_IN_DECLARE, isThis ? "this" : "target"),
- bindings.getEnclosingAdvice().getSourceLocation(), null);
- alreadyWarnedAboutDEoW = true;
- }
- return Pointcut.makeMatchesNothing(Pointcut.CONCRETE);
- }
-
- ExactAnnotationTypePattern newType = (ExactAnnotationTypePattern) annotationTypePattern.remapAdviceFormals(bindings);
- ThisOrTargetAnnotationPointcut ret = new ThisOrTargetAnnotationPointcut(isThis, newType, bindings.getEnclosingAdvice());
- ret.alreadyWarnedAboutDEoW = alreadyWarnedAboutDEoW;
- ret.copyLocationFrom(this);
- return ret;
- }
-
- /*
- * (non-Javadoc)
- *
- * @see org.aspectj.weaver.patterns.Pointcut#findResidue(org.aspectj.weaver.Shadow, org.aspectj.weaver.patterns.ExposedState)
- */
- /**
- * The guard here is going to be the hasAnnotation() test - if it gets through (which we cannot determine until runtime) then we
- * must have a TypeAnnotationAccessVar in place - this means we must *always* have one in place.
- */
- @Override
- protected Test findResidueInternal(Shadow shadow, ExposedState state) {
- if (!couldMatch(shadow)) {
- return Literal.FALSE;
- }
- boolean alwaysMatches = match(shadow).alwaysTrue();
- Var var = isThis ? shadow.getThisVar() : shadow.getTargetVar();
- Var annVar = null;
-
- // Are annotations being bound?
- UnresolvedType annotationType = annotationTypePattern.annotationType;
- if (annotationTypePattern instanceof BindingAnnotationTypePattern) {
- BindingAnnotationTypePattern btp = (BindingAnnotationTypePattern) annotationTypePattern;
- annotationType = btp.annotationType;
-
- annVar = isThis ? shadow.getThisAnnotationVar(annotationType) : shadow.getTargetAnnotationVar(annotationType);
- if (annVar == null) {
- throw new RuntimeException("Impossible!");
- }
-
- state.set(btp.getFormalIndex(), annVar);
- }
-
- if (alwaysMatches && (annVar == null)) {// change check to verify if its the 'generic' annVar that is being used
- return Literal.TRUE;
- } else {
- ResolvedType rType = annotationType.resolve(shadow.getIWorld());
- return Test.makeHasAnnotation(var, rType);
- }
- }
-
- private boolean couldMatch(Shadow shadow) {
- return isThis ? shadow.hasThis() : shadow.hasTarget();
- }
-
- /*
- * (non-Javadoc)
- *
- * @see org.aspectj.weaver.patterns.NameBindingPointcut#getBindingAnnotationTypePatterns()
- */
- @Override
- public List<BindingPattern> getBindingAnnotationTypePatterns() {
- if (annotationTypePattern instanceof BindingAnnotationTypePattern) {
- List<BindingPattern> l = new ArrayList<BindingPattern>();
- l.add((BindingPattern)annotationTypePattern);
- return l;
- } else {
- return Collections.emptyList();
- }
- }
-
- /*
- * (non-Javadoc)
- *
- * @see org.aspectj.weaver.patterns.NameBindingPointcut#getBindingTypePatterns()
- */
- @Override
- public List<BindingTypePattern> getBindingTypePatterns() {
- return Collections.emptyList();
- }
-
- /*
- * (non-Javadoc)
- *
- * @see org.aspectj.weaver.patterns.PatternNode#write(java.io.DataOutputStream)
- */
- @Override
- public void write(CompressingDataOutputStream s) throws IOException {
- s.writeByte(Pointcut.ATTHIS_OR_TARGET);
- s.writeBoolean(isThis);
- annotationTypePattern.write(s);
- writeLocation(s);
- }
-
- public static Pointcut read(VersionedDataInputStream s, ISourceContext context) throws IOException {
- boolean isThis = s.readBoolean();
- AnnotationTypePattern type = AnnotationTypePattern.read(s, context);
- ThisOrTargetAnnotationPointcut ret = new ThisOrTargetAnnotationPointcut(isThis, (ExactAnnotationTypePattern) type);
- ret.readLocation(context, s);
- return ret;
- }
-
- /*
- * (non-Javadoc)
- *
- * @see java.lang.Object#equals(java.lang.Object)
- */
- @Override
- public boolean equals(Object obj) {
- if (!(obj instanceof ThisOrTargetAnnotationPointcut)) {
- return false;
- }
- ThisOrTargetAnnotationPointcut other = (ThisOrTargetAnnotationPointcut) obj;
- return (other.annotationTypePattern.equals(this.annotationTypePattern) && (other.isThis == this.isThis));
- }
-
- /*
- * (non-Javadoc)
- *
- * @see java.lang.Object#hashCode()
- */
- @Override
- public int hashCode() {
- return 17 + 37 * annotationTypePattern.hashCode() + (isThis ? 49 : 13);
- }
-
- /*
- * (non-Javadoc)
- *
- * @see java.lang.Object#toString()
- */
- private void buildDeclarationText() {
- StringBuffer buf = new StringBuffer();
- buf.append(isThis ? "@this(" : "@target(");
- String annPatt = annotationTypePattern.toString();
- buf.append(annPatt.startsWith("@") ? annPatt.substring(1) : annPatt);
- buf.append(")");
- this.declarationText = buf.toString();
- }
-
- @Override
- public String toString() {
- return this.declarationText;
- }
-
- @Override
- public Object accept(PatternNodeVisitor visitor, Object data) {
- return visitor.visit(this, data);
- }
- }
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