123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360 |
- /* *******************************************************************
- * Copyright (c) 2002, 2010 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
- * Nieraj Singh
- * ******************************************************************/
-
- package org.aspectj.weaver.patterns;
-
- import java.io.IOException;
- import java.util.Iterator;
- import java.util.Map;
-
- import org.aspectj.bridge.MessageUtil;
- import org.aspectj.util.FuzzyBoolean;
- import org.aspectj.weaver.BCException;
- import org.aspectj.weaver.ISourceContext;
- import org.aspectj.weaver.IntMap;
- import org.aspectj.weaver.ResolvedType;
- import org.aspectj.weaver.TypeVariableReference;
- import org.aspectj.weaver.UnresolvedType;
- import org.aspectj.weaver.VersionedDataInputStream;
- import org.aspectj.weaver.WeaverMessages;
- import org.aspectj.weaver.World;
-
- /**
- * On creation, type pattern only contains WildTypePattern nodes, not BindingType or ExactType.
- *
- * <p>
- * Then we call resolveBindings() during compilation During concretization of enclosing pointcuts, we call remapAdviceFormals
- *
- * @author Erik Hilsdale
- * @author Jim Hugunin
- */
- public abstract class TypePattern extends PatternNode {
- public static class MatchKind {
- private String name;
-
- public MatchKind(String name) {
- this.name = name;
- }
-
- @Override
- public String toString() {
- return name;
- }
- }
-
- public static final MatchKind STATIC = new MatchKind("STATIC");
- public static final MatchKind DYNAMIC = new MatchKind("DYNAMIC");
-
- public static final TypePattern ELLIPSIS = new EllipsisTypePattern();
- public static final TypePattern ANY = new AnyTypePattern();
- public static final TypePattern NO = new NoTypePattern();
-
- protected boolean includeSubtypes;
- protected boolean isVarArgs = false;
- protected AnnotationTypePattern annotationPattern = AnnotationTypePattern.ANY;
- protected TypePatternList typeParameters = TypePatternList.EMPTY;
-
- protected TypePattern(boolean includeSubtypes, boolean isVarArgs, TypePatternList typeParams) {
- this.includeSubtypes = includeSubtypes;
- this.isVarArgs = isVarArgs;
- this.typeParameters = (typeParams == null ? TypePatternList.EMPTY : typeParams);
- }
-
- protected TypePattern(boolean includeSubtypes, boolean isVarArgs) {
- this(includeSubtypes, isVarArgs, null);
- }
-
- public AnnotationTypePattern getAnnotationPattern() {
- return annotationPattern;
- }
-
- public boolean isVarArgs() {
- return isVarArgs;
- }
-
- public boolean isStarAnnotation() {
- return annotationPattern == AnnotationTypePattern.ANY;
- }
-
- public boolean isArray() {
- return false;
- }
-
- protected TypePattern(boolean includeSubtypes) {
- this(includeSubtypes, false);
- }
-
- public void setAnnotationTypePattern(AnnotationTypePattern annPatt) {
- this.annotationPattern = annPatt;
- }
-
- public void setTypeParameters(TypePatternList typeParams) {
- this.typeParameters = typeParams;
- }
-
- public TypePatternList getTypeParameters() {
- return this.typeParameters;
- }
-
- public void setIsVarArgs(boolean isVarArgs) {
- this.isVarArgs = isVarArgs;
- }
-
- // answer conservatively...
- protected boolean couldEverMatchSameTypesAs(TypePattern other) {
- if (this.includeSubtypes || other.includeSubtypes) {
- return true;
- }
- if (this.annotationPattern != AnnotationTypePattern.ANY) {
- return true;
- }
- if (other.annotationPattern != AnnotationTypePattern.ANY) {
- return true;
- }
- return false;
- }
-
- // XXX non-final for Not, && and ||
- public boolean matchesStatically(ResolvedType type) {
- if (includeSubtypes) {
- return matchesSubtypes(type);
- } else {
- return matchesExactly(type);
- }
- }
-
- public abstract FuzzyBoolean matchesInstanceof(ResolvedType type);
-
- public final FuzzyBoolean matches(ResolvedType type, MatchKind kind) {
- // FuzzyBoolean typeMatch = null;
- // ??? This is part of gracefully handling missing references
- if (type.isMissing()) {
- return FuzzyBoolean.NO;
- }
-
- if (kind == STATIC) {
- return FuzzyBoolean.fromBoolean(matchesStatically(type));
- } else if (kind == DYNAMIC) {
- // System.err.println("matching: " + this + " with " + type);
- // typeMatch = matchesInstanceof(type);
- // System.err.println(" got: " + ret);
- // return typeMatch.and(annotationPattern.matches(type));
- return matchesInstanceof(type);
- } else {
- throw new IllegalArgumentException("kind must be DYNAMIC or STATIC");
- }
- }
-
- protected abstract boolean matchesExactly(ResolvedType type);
-
- protected abstract boolean matchesExactly(ResolvedType type, ResolvedType annotatedType);
-
- protected boolean matchesSubtypes(ResolvedType type) {
- // System.out.println("matching: " + this + " to " + type);
- if (matchesExactly(type)) {
- return true;
- }
-
- // pr124808
- Iterator<ResolvedType> typesIterator = null;
- if (type.isTypeVariableReference()) {
- typesIterator = ((TypeVariableReference) type).getTypeVariable().getFirstBound().resolve(type.getWorld())
- .getDirectSupertypes();
- } else {
- // pr223605
- if (type.isRawType()) {
- type = type.getGenericType();
- }
- typesIterator = type.getDirectSupertypes();
- }
-
- for (Iterator<ResolvedType> i = typesIterator; i.hasNext();) {
- ResolvedType superType = i.next();
- if (matchesSubtypes(superType, type)) {
- return true;
- }
- }
- return false;
- }
-
- protected boolean matchesSubtypes(ResolvedType superType, ResolvedType annotatedType) {
- // System.out.println("matching2: " + this + " to " + superType);
- if (matchesExactly(superType, annotatedType)) {
- // System.out.println(" true");
- return true;
- }
- // If an ITD is applied, it will be put onto the generic type, not the parameterized or raw form
- if (superType.isParameterizedType() || superType.isRawType()) {
- superType = superType.getGenericType();
- }
- // FuzzyBoolean ret = FuzzyBoolean.NO; // ??? -eh
- for (Iterator<ResolvedType> i = superType.getDirectSupertypes(); i.hasNext();) {
- ResolvedType superSuperType = i.next();
- if (matchesSubtypes(superSuperType, annotatedType)) {
- return true;
- }
- }
- return false;
- }
-
- public UnresolvedType resolveExactType(IScope scope, Bindings bindings) {
- TypePattern p = resolveBindings(scope, bindings, false, true);
- if (!(p instanceof ExactTypePattern)) {
- return ResolvedType.MISSING;
- }
- return ((ExactTypePattern) p).getType();
- }
-
- public UnresolvedType getExactType() {
- if (this instanceof ExactTypePattern) {
- return ((ExactTypePattern) this).getType();
- } else {
- return ResolvedType.MISSING;
- }
- }
-
- protected TypePattern notExactType(IScope s) {
- s.getMessageHandler().handleMessage(
- MessageUtil.error(WeaverMessages.format(WeaverMessages.EXACT_TYPE_PATTERN_REQD), getSourceLocation()));
- return NO;
- }
-
- // public boolean assertExactType(IMessageHandler m) {
- // if (this instanceof ExactTypePattern) return true;
- //
- // //XXX should try harder to avoid multiple errors for one problem
- // m.handleMessage(MessageUtil.error("exact type pattern required", getSourceLocation()));
- // return false;
- // }
-
- /**
- * This can modify in place, or return a new TypePattern if the type changes.
- */
- public TypePattern resolveBindings(IScope scope, Bindings bindings, boolean allowBinding, boolean requireExactType) {
- annotationPattern = annotationPattern.resolveBindings(scope, bindings, allowBinding);
- return this;
- }
-
- public void resolve(World world) {
- annotationPattern.resolve(world);
- }
-
- /**
- * return a version of this type pattern in which all type variable references have been replaced by their corresponding entry
- * in the map.
- */
- public abstract TypePattern parameterizeWith(Map<String, UnresolvedType> typeVariableMap, World w);
-
- public void postRead(ResolvedType enclosingType) {
- }
-
- public boolean isEllipsis() {
- return false;
- }
-
- public boolean isStar() {
- return false;
- }
-
- /**
- * This is called during concretization of pointcuts, it is used by BindingTypePattern to return a new BindingTypePattern with a
- * formal index appropriate for the advice, rather than for the lexical declaration, i.e. this handles transformations through
- * named pointcuts.
- *
- * <pre>
- * pointcut foo(String name): args(name);
- * --> This makes a BindingTypePattern(0) pointing to the 0th formal
- *
- * before(Foo f, String n): this(f) && foo(n) { ... }
- * --> when resolveReferences is called on the args from the above, it
- * will return a BindingTypePattern(1)
- *
- * before(Foo f): this(f) && foo(*) { ... }
- * --> when resolveReferences is called on the args from the above, it
- * will return an ExactTypePattern(String)
- * </pre>
- */
- public TypePattern remapAdviceFormals(IntMap bindings) {
- return this;
- }
-
- public static final byte WILD = 1;
- public static final byte EXACT = 2;
- public static final byte BINDING = 3;
- public static final byte ELLIPSIS_KEY = 4;
- public static final byte ANY_KEY = 5;
- public static final byte NOT = 6;
- public static final byte OR = 7;
- public static final byte AND = 8;
- public static final byte NO_KEY = 9;
- public static final byte ANY_WITH_ANNO = 10;
- public static final byte HAS_MEMBER = 11;
- public static final byte TYPE_CATEGORY = 12;
-
- public static TypePattern read(VersionedDataInputStream s, ISourceContext context) throws IOException {
- byte key = s.readByte();
- switch (key) {
- case WILD:
- return WildTypePattern.read(s, context);
- case EXACT:
- return ExactTypePattern.read(s, context);
- case BINDING:
- return BindingTypePattern.read(s, context);
- case ELLIPSIS_KEY:
- return ELLIPSIS;
- case ANY_KEY:
- return ANY;
- case NO_KEY:
- return NO;
- case NOT:
- return NotTypePattern.read(s, context);
- case OR:
- return OrTypePattern.read(s, context);
- case AND:
- return AndTypePattern.read(s, context);
- case ANY_WITH_ANNO:
- return AnyWithAnnotationTypePattern.read(s, context);
- case HAS_MEMBER:
- return HasMemberTypePattern.read(s, context);
- case TYPE_CATEGORY:
- return TypeCategoryTypePattern.read(s, context);
- }
- throw new BCException("unknown TypePattern kind: " + key);
- }
-
- public boolean isIncludeSubtypes() {
- return includeSubtypes;
- }
-
- /**
- * For quickly recognizing the pattern '!void'
- */
- public boolean isBangVoid() {
- return false;
- }
-
- /**
- * for quickly recognizing the pattern 'void'
- */
- public boolean isVoid() {
- return false;
- }
-
- public boolean hasFailedResolution() {
- return false;
- }
-
- }
-
-
|