/*******************************************************************************
* Copyright (c) 2004, 2012 IBM Corporation and others.
* 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.che.jdt.internal.core.search.matching;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.internal.compiler.ast.ASTNode;
import org.eclipse.jdt.internal.compiler.ast.LambdaExpression;
import org.eclipse.jdt.internal.compiler.ast.QualifiedTypeReference;
import org.eclipse.jdt.internal.compiler.ast.SingleTypeReference;
import org.eclipse.jdt.internal.compiler.ast.TypeReference;
import org.eclipse.jdt.internal.compiler.lookup.ArrayBinding;
import org.eclipse.jdt.internal.compiler.lookup.Binding;
import org.eclipse.jdt.internal.compiler.lookup.ProblemReferenceBinding;
import org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding;
import org.eclipse.jdt.internal.compiler.lookup.TypeBinding;
import org.eclipse.jdt.internal.core.search.indexing.IIndexConstants;
public class SuperTypeReferenceLocator extends PatternLocator {
protected SuperTypeReferencePattern pattern;
public SuperTypeReferenceLocator(SuperTypeReferencePattern pattern) {
super(pattern);
this.pattern = pattern;
}
//public int match(ASTNode node, MatchingNodeSet nodeSet) - SKIP IT
//public int match(ConstructorDeclaration node, MatchingNodeSet nodeSet) - SKIP IT
//public int match(Expression node, MatchingNodeSet nodeSet) - SKIP IT
//public int match(FieldDeclaration node, MatchingNodeSet nodeSet) - SKIP IT
public int match(LambdaExpression node, MatchingNodeSet nodeSet) {
if (this.pattern.superRefKind != SuperTypeReferencePattern.ONLY_SUPER_INTERFACES)
return IMPOSSIBLE_MATCH;
nodeSet.mustResolve = true;
return nodeSet.addMatch(node, POSSIBLE_MATCH);
}
//public int match(MethodDeclaration node, MatchingNodeSet nodeSet) - SKIP IT
//public int match(MessageSend node, MatchingNodeSet nodeSet) - SKIP IT
//public int match(Reference node, MatchingNodeSet nodeSet) - SKIP IT
//public int match(TypeDeclaration node, MatchingNodeSet nodeSet) - SKIP IT
public int match(TypeReference node, MatchingNodeSet nodeSet) {
if (this.flavors != SUPERTYPE_REF_FLAVOR) return IMPOSSIBLE_MATCH;
if (this.pattern.superSimpleName == null)
return nodeSet.addMatch(node, this.pattern.mustResolve ? POSSIBLE_MATCH : ACCURATE_MATCH);
char[] typeRefSimpleName = null;
if (node instanceof SingleTypeReference) {
typeRefSimpleName = ((SingleTypeReference)node).token;
} else { // QualifiedTypeReference
char[][] tokens = ((QualifiedTypeReference)node).tokens;
typeRefSimpleName = tokens[tokens.length - 1];
}
if (matchesName(this.pattern.superSimpleName, typeRefSimpleName))
return nodeSet.addMatch(node, this.pattern.mustResolve ? POSSIBLE_MATCH : ACCURATE_MATCH);
return IMPOSSIBLE_MATCH;
}
protected int matchContainer() {
return CLASS_CONTAINER;
}
/* (non-Javadoc)
* @see org.eclipse.jdt.internal.core.search.matching.PatternLocator#matchReportReference(org.eclipse.jdt.internal.compiler.ast.ASTNode,
* org.eclipse.jdt.core.IJavaElement, org.eclipse.jdt.internal.compiler.lookup.Binding, int, org.eclipse.jdt.internal.core.search
* .matching.MatchLocator)
*/
protected void matchReportReference(ASTNode reference, IJavaElement element, Binding elementBinding, int accuracy, MatchLocator locator)
throws CoreException {
if (elementBinding instanceof ReferenceBinding) {
ReferenceBinding referenceBinding = (ReferenceBinding)elementBinding;
if (referenceBinding.isClass() && this.pattern.typeSuffix == IIndexConstants.INTERFACE_SUFFIX) {
// do not report class if expected types are only interfaces
return;
}
if (referenceBinding.isInterface() && this.pattern.typeSuffix == IIndexConstants.CLASS_SUFFIX) {
// do not report interface if expected types are only classes
return;
}
}
super.matchReportReference(reference, element, elementBinding, accuracy, locator);
}
protected int referenceType() {
return IJavaElement.TYPE;
}
public int resolveLevel(ASTNode node) {
TypeBinding typeBinding = null;
if (node instanceof LambdaExpression) {
LambdaExpression lambda = (LambdaExpression)node;
typeBinding = lambda.resolvedType;
} else {
if (!(node instanceof TypeReference)) return IMPOSSIBLE_MATCH;
TypeReference typeRef = (TypeReference)node;
typeBinding = typeRef.resolvedType;
}
if (typeBinding instanceof ArrayBinding)
typeBinding = ((ArrayBinding)typeBinding).leafComponentType;
if (typeBinding instanceof ProblemReferenceBinding)
typeBinding = ((ProblemReferenceBinding)typeBinding).closestMatch();
if (typeBinding == null || !typeBinding.isValidBinding()) return INACCURATE_MATCH;
return resolveLevelForType(this.pattern.superSimpleName, this.pattern.superQualification, typeBinding);
}
public int resolveLevel(Binding binding) {
if (binding == null) return INACCURATE_MATCH;
if (!(binding instanceof ReferenceBinding)) return IMPOSSIBLE_MATCH;
ReferenceBinding type = (ReferenceBinding)binding;
int level = IMPOSSIBLE_MATCH;
if (this.pattern.superRefKind != SuperTypeReferencePattern.ONLY_SUPER_INTERFACES) {
level = resolveLevelForType(this.pattern.superSimpleName, this.pattern.superQualification, type.superclass());
if (level == ACCURATE_MATCH) return ACCURATE_MATCH;
}
if (this.pattern.superRefKind != SuperTypeReferencePattern.ONLY_SUPER_CLASSES) {
ReferenceBinding[] superInterfaces = type.superInterfaces();
for (int i = 0, max = superInterfaces.length; i < max; i++) {
int newLevel = resolveLevelForType(this.pattern.superSimpleName, this.pattern.superQualification, superInterfaces[i]);
if (newLevel > level) {
if (newLevel == ACCURATE_MATCH) return ACCURATE_MATCH;
level = newLevel;
}
}
}
return level;
}
public String toString() {
return "Locator for " + this.pattern.toString(); //$NON-NLS-1$
}
}