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- /* *******************************************************************
- * 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 v1.0
- * which accompanies this distribution and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors:
- * PARC initial implementation
- * ******************************************************************/
-
- package org.aspectj.weaver.patterns;
-
- import java.io.IOException;
- import java.util.Map;
-
- import org.aspectj.util.FuzzyBoolean;
- import org.aspectj.weaver.CompressingDataOutputStream;
- import org.aspectj.weaver.ISourceContext;
- import org.aspectj.weaver.ResolvedType;
- import org.aspectj.weaver.UnresolvedType;
- import org.aspectj.weaver.VersionedDataInputStream;
- import org.aspectj.weaver.World;
-
- /**
- * left && right
- *
- * <p>
- * any binding to formals is explicitly forbidden for any composite by the language
- *
- * @author Erik Hilsdale
- * @author Jim Hugunin
- */
- public class AndTypePattern extends TypePattern {
- private TypePattern left, right;
-
- public AndTypePattern(TypePattern left, TypePattern right) {
- super(false, false); // ?? we override all methods that care about includeSubtypes
- this.left = left;
- this.right = right;
- setLocation(left.getSourceContext(), left.getStart(), right.getEnd());
- }
-
- @Override
- protected boolean couldEverMatchSameTypesAs(TypePattern other) {
- return true; // don't dive into ands yet....
- }
-
- @Override
- public FuzzyBoolean matchesInstanceof(ResolvedType type) {
- return left.matchesInstanceof(type).and(right.matchesInstanceof(type));
- }
-
- @Override
- protected boolean matchesExactly(ResolvedType type) {
- // ??? if these had side-effects, this sort-circuit could be a mistake
- return left.matchesExactly(type) && right.matchesExactly(type);
- }
-
- @Override
- protected boolean matchesExactly(ResolvedType type, ResolvedType annotatedType) {
- return left.matchesExactly(type, annotatedType) && right.matchesExactly(type, annotatedType);
- }
-
- @Override
- public boolean matchesStatically(ResolvedType type) {
- return left.matchesStatically(type) && right.matchesStatically(type);
- }
-
- @Override
- public void setIsVarArgs(boolean isVarArgs) {
- this.isVarArgs = isVarArgs;
- left.setIsVarArgs(isVarArgs);
- right.setIsVarArgs(isVarArgs);
- }
-
- @Override
- public void setAnnotationTypePattern(AnnotationTypePattern annPatt) {
- if (annPatt == AnnotationTypePattern.ANY) {
- return;
- }
- if (left.annotationPattern == AnnotationTypePattern.ANY) {
- left.setAnnotationTypePattern(annPatt);
- } else {
- left.setAnnotationTypePattern(new AndAnnotationTypePattern(left.annotationPattern, annPatt));
- }
- if (right.annotationPattern == AnnotationTypePattern.ANY) {
- right.setAnnotationTypePattern(annPatt);
- } else {
- right.setAnnotationTypePattern(new AndAnnotationTypePattern(right.annotationPattern, annPatt));
- }
- }
-
- @Override
- public void write(CompressingDataOutputStream s) throws IOException {
- s.writeByte(TypePattern.AND);
- left.write(s);
- right.write(s);
- writeLocation(s);
- }
-
- public static TypePattern read(VersionedDataInputStream s, ISourceContext context) throws IOException {
- AndTypePattern ret = new AndTypePattern(TypePattern.read(s, context), TypePattern.read(s, context));
- ret.readLocation(context, s);
- if (ret.left.isVarArgs && ret.right.isVarArgs) {
- ret.isVarArgs = true;
- }
- return ret;
- }
-
- @Override
- public TypePattern resolveBindings(IScope scope, Bindings bindings, boolean allowBinding, boolean requireExactType) {
- if (requireExactType) {
- return notExactType(scope);
- }
- left = left.resolveBindings(scope, bindings, false, false);
- right = right.resolveBindings(scope, bindings, false, false);
- return this;
- }
-
- @Override
- public TypePattern parameterizeWith(Map<String,UnresolvedType> typeVariableMap, World w) {
- TypePattern newLeft = left.parameterizeWith(typeVariableMap, w);
- TypePattern newRight = right.parameterizeWith(typeVariableMap, w);
- AndTypePattern ret = new AndTypePattern(newLeft, newRight);
- ret.copyLocationFrom(this);
- return ret;
- }
-
- @Override
- public String toString() {
- StringBuffer buff = new StringBuffer();
- if (annotationPattern != AnnotationTypePattern.ANY) {
- buff.append('(');
- buff.append(annotationPattern.toString());
- buff.append(' ');
- }
- buff.append('(');
- buff.append(left.toString());
- buff.append(" && ");
- buff.append(right.toString());
- buff.append(')');
- if (annotationPattern != AnnotationTypePattern.ANY) {
- buff.append(')');
- }
- return buff.toString();
- }
-
- public TypePattern getLeft() {
- return left;
- }
-
- public TypePattern getRight() {
- return right;
- }
-
- @Override
- public boolean equals(Object obj) {
- if (!(obj instanceof AndTypePattern)) {
- return false;
- }
- AndTypePattern atp = (AndTypePattern) obj;
- return left.equals(atp.left) && right.equals(atp.right);
- }
-
- @Override
- public boolean isStarAnnotation() {
- return left.isStarAnnotation() && right.isStarAnnotation();
- }
-
- /*
- * (non-Javadoc)
- *
- * @see java.lang.Object#hashCode()
- */
- @Override
- public int hashCode() {
- int ret = 17;
- ret = ret + 37 * left.hashCode();
- ret = ret + 37 * right.hashCode();
- return ret;
- }
-
- @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);
- left.traverse(visitor, ret);
- right.traverse(visitor, ret);
- return ret;
- }
-
- }
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