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The AspectJ weaver introduces advices to java classes
/* *******************************************************************
* 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.MessageUtil;
import org.aspectj.util.FuzzyBoolean;
import org.aspectj.weaver.BCException;
import org.aspectj.weaver.CompressingDataOutputStream;
import org.aspectj.weaver.ISourceContext;
import org.aspectj.weaver.IntMap;
import org.aspectj.weaver.Member;
import org.aspectj.weaver.NameMangler;
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;
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 WithinCodeAnnotationPointcut extends NameBindingPointcut {
private ExactAnnotationTypePattern annotationTypePattern;
private String declarationText;
private static final int matchedShadowKinds;
static {
int flags = Shadow.ALL_SHADOW_KINDS_BITS;
for (int i = 0; i < Shadow.SHADOW_KINDS.length; i++) {
if (Shadow.SHADOW_KINDS[i].isEnclosingKind()) {
flags -= Shadow.SHADOW_KINDS[i].bit;
}
}
matchedShadowKinds = flags;
}
public WithinCodeAnnotationPointcut(ExactAnnotationTypePattern type) {
super();
this.annotationTypePattern = type;
this.pointcutKind = Pointcut.ATWITHINCODE;
buildDeclarationText();
}
public WithinCodeAnnotationPointcut(ExactAnnotationTypePattern type, ShadowMunger munger) {
this(type);
this.pointcutKind = Pointcut.ATWITHINCODE;
}
public ExactAnnotationTypePattern getAnnotationTypePattern() {
return annotationTypePattern;
}
public int couldMatchKinds() {
return matchedShadowKinds;
}
public Pointcut parameterizeWith(Map typeVariableMap, World w) {
WithinCodeAnnotationPointcut ret = new WithinCodeAnnotationPointcut((ExactAnnotationTypePattern) this.annotationTypePattern
.parameterizeWith(typeVariableMap, w));
ret.copyLocationFrom(this);
return ret;
}
/*
* (non-Javadoc)
*
* @see org.aspectj.weaver.patterns.Pointcut#fastMatch(org.aspectj.weaver.patterns.FastMatchInfo)
*/
public FuzzyBoolean fastMatch(FastMatchInfo info) {
return FuzzyBoolean.MAYBE;
}
/*
* (non-Javadoc)
*
* @see org.aspectj.weaver.patterns.Pointcut#match(org.aspectj.weaver.Shadow)
*/
protected FuzzyBoolean matchInternal(Shadow shadow) {
Member member = shadow.getEnclosingCodeSignature();
ResolvedMember rMember = member.resolve(shadow.getIWorld());
if (rMember == null) {
if (member.getName().startsWith(NameMangler.PREFIX)) {
return FuzzyBoolean.NO;
}
shadow.getIWorld().getLint().unresolvableMember.signal(member.toString(), getSourceLocation());
return FuzzyBoolean.NO;
}
annotationTypePattern.resolve(shadow.getIWorld());
return annotationTypePattern.matches(rMember);
}
/*
* (non-Javadoc)
*
* @see org.aspectj.weaver.patterns.Pointcut#resolveBindings(org.aspectj.weaver.patterns.IScope,
* org.aspectj.weaver.patterns.Bindings)
*/
protected void resolveBindings(IScope scope, Bindings bindings) {
if (!scope.getWorld().isInJava5Mode()) {
scope.message(MessageUtil.error(WeaverMessages.format(WeaverMessages.ATWITHINCODE_ONLY_SUPPORTED_AT_JAVA5_LEVEL),
getSourceLocation()));
return;
}
annotationTypePattern = (ExactAnnotationTypePattern) annotationTypePattern.resolveBindings(scope, bindings, true);
// must be either a Var, or an annotation type pattern
}
/*
* (non-Javadoc)
*
* @see org.aspectj.weaver.patterns.Pointcut#concretize1(org.aspectj.weaver.ResolvedType, org.aspectj.weaver.IntMap)
*/
protected Pointcut concretize1(ResolvedType inAspect, ResolvedType declaringType, IntMap bindings) {
ExactAnnotationTypePattern newType = (ExactAnnotationTypePattern) annotationTypePattern.remapAdviceFormals(bindings);
Pointcut ret = new WithinCodeAnnotationPointcut(newType, bindings.getEnclosingAdvice());
ret.copyLocationFrom(this);
return ret;
}
/*
* (non-Javadoc)
*
* @see org.aspectj.weaver.patterns.Pointcut#findResidue(org.aspectj.weaver.Shadow, org.aspectj.weaver.patterns.ExposedState)
*/
protected Test findResidueInternal(Shadow shadow, ExposedState state) {
if (annotationTypePattern instanceof BindingAnnotationTypePattern) {
BindingAnnotationTypePattern btp = (BindingAnnotationTypePattern) annotationTypePattern;
UnresolvedType annotationType = btp.annotationType;
Var var = shadow.getWithinCodeAnnotationVar(annotationType);
// This should not happen, we shouldn't have gotten this far
// if we weren't going to find the annotation
if (var == null) {
throw new BCException("Impossible! annotation=[" + annotationType + "] shadow=[" + shadow + " at "
+ shadow.getSourceLocation() + "] pointcut is at [" + getSourceLocation() + "]");
}
state.set(btp.getFormalIndex(), var);
}
if (matchInternal(shadow).alwaysTrue()) {
return Literal.TRUE;
} else {
return Literal.FALSE;
}
}
public List getBindingAnnotationTypePatterns() {
if (annotationTypePattern instanceof BindingAnnotationTypePattern) {
List l = new ArrayList();
l.add((BindingPattern)annotationTypePattern);
return l;
} else {
return Collections.emptyList();
}
}
public List getBindingTypePatterns() {
return Collections.emptyList();
}
public void write(CompressingDataOutputStream s) throws IOException {
s.writeByte(Pointcut.ATWITHINCODE);
annotationTypePattern.write(s);
writeLocation(s);
}
public static Pointcut read(VersionedDataInputStream s, ISourceContext context) throws IOException {
AnnotationTypePattern type = AnnotationTypePattern.read(s, context);
WithinCodeAnnotationPointcut ret = new WithinCodeAnnotationPointcut((ExactAnnotationTypePattern) type);
ret.readLocation(context, s);
return ret;
}
public boolean equals(Object other) {
if (!(other instanceof WithinCodeAnnotationPointcut)) {
return false;
}
WithinCodeAnnotationPointcut o = (WithinCodeAnnotationPointcut) other;
return o.annotationTypePattern.equals(this.annotationTypePattern);
}
public int hashCode() {
int result = 17;
result = 23 * result + annotationTypePattern.hashCode();
return result;
}
private void buildDeclarationText() {
StringBuffer buf = new StringBuffer();
buf.append("@withincode(");
String annPatt = annotationTypePattern.toString();
buf.append(annPatt.startsWith("@") ? annPatt.substring(1) : annPatt);
buf.append(")");
this.declarationText = buf.toString();
}
public String toString() {
return this.declarationText;
}
public Object accept(PatternNodeVisitor visitor, Object data) {
return visitor.visit(this, data);
}
}