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/*******************************************************************************
* Copyright (c) 2000, 2010 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.core.search.matching;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.compiler.CharOperation;
import org.eclipse.jdt.core.search.IJavaSearchConstants;
import org.eclipse.jdt.core.search.SearchPattern;
import org.eclipse.jdt.internal.core.util.Util;
public class TypeReferencePattern extends IntersectingPattern {
protected char[] qualification;
protected char[] simpleName;
protected char[] currentCategory;
/* Optimization: case where simpleName == null */
public int segmentsSize;
protected char[][] segments;
protected int currentSegment;
private final static char[][]
CATEGORIES = { REF, ANNOTATION_REF },
CATEGORIES_ANNOT_REF = { ANNOTATION_REF };
private char[][] categories;
char typeSuffix = TYPE_SUFFIX;
public TypeReferencePattern(char[] qualification, char[] simpleName, int matchRule) {
this(matchRule);
this.qualification = this.isCaseSensitive ? qualification : CharOperation.toLowerCase(qualification);
this.simpleName = (this.isCaseSensitive || this.isCamelCase) ? simpleName : CharOperation.toLowerCase(simpleName);
if (simpleName == null)
this.segments = this.qualification == null ? ONE_STAR_CHAR : CharOperation.splitOn('.', this.qualification);
else
this.segments = null;
if (this.segments == null)
if (this.qualification == null)
this.segmentsSize = 0;
else
this.segmentsSize = CharOperation.occurencesOf('.', this.qualification) + 1;
else
this.segmentsSize = this.segments.length;
this.mustResolve = true; // always resolve (in case of a simple name reference being a potential match)
}
/*
* Instantiate a type reference pattern with additional information for generics search
*/
public TypeReferencePattern(char[] qualification, char[] simpleName, String typeSignature, int matchRule) {
this(qualification, simpleName, typeSignature, 0, TYPE_SUFFIX, matchRule);
}
/*
* Instantiate a type reference pattern with additional information for generics search and search elements nature
*/
public TypeReferencePattern(char[] qualification, char[] simpleName, String typeSignature, char typeSuffix, int matchRule) {
this(qualification, simpleName, typeSignature, 0, typeSuffix, matchRule);
}
/*
* Instanciate a type reference pattern with additional information for generics search, search elements nature and fine grain information
*/
public TypeReferencePattern(char[] qualification, char[] simpleName, String typeSignature, int limitTo, char typeSuffix, int matchRule) {
this(qualification, simpleName,matchRule);
this.typeSuffix = typeSuffix;
if (typeSignature != null) {
// store type signatures and arguments
this.typeSignatures = Util.splitTypeLevelsSignature(typeSignature);
setTypeArguments(Util.getAllTypeArguments(this.typeSignatures));
if (hasTypeArguments()) {
this.segmentsSize = getTypeArguments().length + CharOperation.occurencesOf('/', this.typeSignatures[0]) - 1;
}
}
this.fineGrain = limitTo & 0xFFFFFFF0;
if (this.fineGrain == IJavaSearchConstants.ANNOTATION_TYPE_REFERENCE) {
this.categories = CATEGORIES_ANNOT_REF;
}
}
/*
* Instantiate a type reference pattern with additional information for generics search
*/
public TypeReferencePattern(char[] qualification, char[] simpleName, IType type, int matchRule) {
this(qualification, simpleName, type, 0, matchRule);
}
/*
* Instanciate a type reference pattern with additional information for generics search
*/
public TypeReferencePattern(char[] qualification, char[] simpleName, IType type, int limitTo, int matchRule) {
this(qualification, simpleName,matchRule);
storeTypeSignaturesAndArguments(type);
this.fineGrain = limitTo & 0xFFFFFFF0;
}
TypeReferencePattern(int matchRule) {
super(TYPE_REF_PATTERN, matchRule);
this.categories = CATEGORIES;
}
@Override
public void decodeIndexKey(char[] key) {
this.simpleName = key;
}
@Override
public SearchPattern getBlankPattern() {
return new TypeReferencePattern(R_EXACT_MATCH | R_CASE_SENSITIVE);
}
@Override
public char[] getIndexKey() {
if (this.simpleName != null)
return this.simpleName;
// Optimization, e.g. type reference is 'org.eclipse.jdt.core.*'
if (this.currentSegment >= 0)
return this.segments[this.currentSegment];
return null;
}
@Override
public char[][] getIndexCategories() {
return this.categories;
}
@Override
protected boolean hasNextQuery() {
if (this.segments == null) return false;
// Optimization, e.g. type reference is 'org.eclipse.jdt.core.*'
// if package has at least 4 segments, don't look at the first 2 since they are mostly
// redundant (e.g. in 'org.eclipse.jdt.core.*' 'org.eclipse' is used all the time)
return --this.currentSegment >= (this.segments.length >= 4 ? 2 : 0);
}
@Override
public boolean matchesDecodedKey(SearchPattern decodedPattern) {
return true; // index key is not encoded so query results all match
}
@Override
protected void resetQuery() {
/* walk the segments from end to start as it will find less potential references using 'lang' than 'java' */
if (this.segments != null)
this.currentSegment = this.segments.length - 1;
}
@Override
protected StringBuffer print(StringBuffer output) {
String patternClassName = getClass().getName();
output.append(patternClassName.substring(patternClassName.lastIndexOf('.')+1));
output.append(": qualification<"); //$NON-NLS-1$
if (this.qualification != null)
output.append(this.qualification);
else
output.append("*"); //$NON-NLS-1$
output.append(">, type<"); //$NON-NLS-1$
if (this.simpleName != null)
output.append(this.simpleName);
else
output.append("*"); //$NON-NLS-1$
output.append(">"); //$NON-NLS-1$
return super.print(output);
}
}
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