Copyright (c) 2000, 2009 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
/*******************************************************************************
 * Copyright (c) 2000, 2009 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.compiler.CharOperation;
import org.eclipse.jdt.core.search.SearchPattern;

import org.eclipse.jdt.internal.core.util.Util;

public class FieldPattern extends VariablePattern {

// declaring type
protected char[] declaringQualification;
protected char[] declaringSimpleName;

// type
protected char[] typeQualification;
protected char[] typeSimpleName;

protected static char[][] REF_CATEGORIES = { REF };
protected static char[][] REF_AND_DECL_CATEGORIES = { REF, FIELD_DECL };
protected static char[][] DECL_CATEGORIES = { FIELD_DECL };

public static char[] createIndexKey(char[] fieldName) {
	return fieldName;
}

public FieldPattern(
	char[] name,
	char[] declaringQualification,
	char[] declaringSimpleName,
	char[] typeQualification,
	char[] typeSimpleName,
	int limitTo,
	int matchRule) {

	super(FIELD_PATTERN, name, limitTo, matchRule);

	this.declaringQualification = this.isCaseSensitive ? declaringQualification : CharOperation.toLowerCase(declaringQualification);
	this.declaringSimpleName = this.isCaseSensitive ? declaringSimpleName : CharOperation.toLowerCase(declaringSimpleName);
	this.typeQualification = this.isCaseSensitive ? typeQualification : CharOperation.toLowerCase(typeQualification);
	this.typeSimpleName = (this.isCaseSensitive || this.isCamelCase) ? typeSimpleName : CharOperation.toLowerCase(typeSimpleName);

	this.mustResolve = mustResolve();
}
/*
 * Instantiate a field pattern with additional information for generic search
 */
public FieldPattern(
	char[] name,
	char[] declaringQualification,
	char[] declaringSimpleName,
	char[] typeQualification,
	char[] typeSimpleName,
	String typeSignature,
	int limitTo,
	int matchRule) {

	this(name, declaringQualification, declaringSimpleName, typeQualification, typeSimpleName, limitTo, matchRule);

	// store type signatures and arguments
	if (typeSignature != null) {
		this.typeSignatures = Util.splitTypeLevelsSignature(typeSignature);
		setTypeArguments(Util.getAllTypeArguments(this.typeSignatures));
	}
}
@Override
public void decodeIndexKey(char[] key) {
	this.name = key;
}
@Override
public SearchPattern getBlankPattern() {
	return new FieldPattern(null, null, null, null, null, 0, R_EXACT_MATCH | R_CASE_SENSITIVE);
}
@Override
public char[] getIndexKey() {
	return this.name;
}
@Override
public char[][] getIndexCategories() {
	if (this.findReferences || this.fineGrain != 0)
		return this.findDeclarations || this.writeAccess ? REF_AND_DECL_CATEGORIES : REF_CATEGORIES;
	if (this.findDeclarations)
		return DECL_CATEGORIES;
	return CharOperation.NO_CHAR_CHAR;
}
@Override
public boolean matchesDecodedKey(SearchPattern decodedPattern) {
	return true; // index key is not encoded so query results all match
}
@Override
protected boolean mustResolve() {
	if (this.declaringSimpleName != null || this.declaringQualification != null) return true;
	if (this.typeSimpleName != null || this.typeQualification != null) return true;

	return super.mustResolve();
}
@Override
protected StringBuffer print(StringBuffer output) {
	if (this.findDeclarations) {
		output.append(this.findReferences
			? "FieldCombinedPattern: " //$NON-NLS-1$
			: "FieldDeclarationPattern: "); //$NON-NLS-1$
	} else {
		output.append("FieldReferencePattern: "); //$NON-NLS-1$
	}
	if (this.declaringQualification != null) output.append(this.declaringQualification).append('.');
	if (this.declaringSimpleName != null)
		output.append(this.declaringSimpleName).append('.');
	else if (this.declaringQualification != null) output.append("*."); //$NON-NLS-1$
	if (this.name == null) {
		output.append("*"); //$NON-NLS-1$
	} else {
		output.append(this.name);
	}
	if (this.typeQualification != null)
		output.append(" --> ").append(this.typeQualification).append('.'); //$NON-NLS-1$
	else if (this.typeSimpleName != null) output.append(" --> "); //$NON-NLS-1$
	if (this.typeSimpleName != null)
		output.append(this.typeSimpleName);
	else if (this.typeQualification != null) output.append("*"); //$NON-NLS-1$
	return super.print(output);
}
}