All Downloads are FREE. Search and download functionalities are using the official Maven repository.
  • Log In
  • Register

    • org.aspectj.weaver.patterns.KindedPointcut Maven / Gradle / Ivy

    Go to download

    The AspectJ matcher can be used for matching pointcuts independently of any AspectJ compilation or weaving steps. Most notably, this can be used by frameworks such as Spring AOP which utilise the @AspectJ pointcut syntax but implement aspect weaving in a way independent of AspectJ, e.g. using dynamic proxies.

    There is a newer version: 1.9.22.1
    Show newest version
    /* *******************************************************************
 * 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;
	}
}




    © 2015 - 2024 Weber Informatics LLC | Privacy Policy