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/*******************************************************************************
* Copyright (c) 2006, 2012 Wind River Systems, Inc. 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:
* Markus Schorn - initial API and implementation
* Bryan Wilkinson (QNX)
* Andrew Ferguson (Symbian)
* Sergey Prigogin (Google)
* Jens Elmenthaler - http://bugs.eclipse.org/173458 (camel case completion)
*******************************************************************************/
package org.eclipse.cdt.internal.core.index;
import java.util.regex.Pattern;
import org.eclipse.cdt.core.dom.IName;
import org.eclipse.cdt.core.dom.ast.IBinding;
import org.eclipse.cdt.core.dom.ast.IScope;
import org.eclipse.cdt.core.index.IIndex;
import org.eclipse.cdt.core.index.IIndexBinding;
import org.eclipse.cdt.core.index.IIndexFile;
import org.eclipse.cdt.core.index.IIndexFileLocation;
import org.eclipse.cdt.core.index.IIndexFileSet;
import org.eclipse.cdt.core.index.IIndexInclude;
import org.eclipse.cdt.core.index.IIndexMacro;
import org.eclipse.cdt.core.index.IIndexName;
import org.eclipse.cdt.core.index.IndexFilter;
import org.eclipse.cdt.core.parser.ISignificantMacros;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
final public class EmptyCIndex implements IIndex {
public static IIndex INSTANCE= new EmptyCIndex();
private EmptyCIndex() {
}
@Override
public IIndexName[] findDeclarations(IBinding binding) {
return IIndexFragmentName.EMPTY_NAME_ARRAY;
}
@Override
public IIndexName[] findDefinitions(IBinding binding) {
return IIndexFragmentName.EMPTY_NAME_ARRAY;
}
@Override
public IIndexName[] findReferences(IBinding binding) {
return IIndexFragmentName.EMPTY_NAME_ARRAY;
}
@Override
public IIndexName[] findNames(IBinding binding, int flags) {
return IIndexFragmentName.EMPTY_NAME_ARRAY;
}
@Override
@Deprecated
public IIndexFile getFile(int linkageID, IIndexFileLocation location) {
return null;
}
@Override
public IIndexFile getFile(int linkageID, IIndexFileLocation location,
ISignificantMacros significantFiles) throws CoreException {
return null;
}
@Override
public IIndexFile[] getFiles(int linkageID, IIndexFileLocation location) throws CoreException {
return IIndexFile.EMPTY_FILE_ARRAY;
}
@Override
public IIndexFile[] getFiles(IIndexFileLocation location) {
return IIndexFile.EMPTY_FILE_ARRAY;
}
@Override
public IIndexFile resolveInclude(IIndexInclude include) {
return null;
}
@Override
public IIndexInclude[] findIncludedBy(IIndexFile file) {
return IIndexInclude.EMPTY_INCLUDES_ARRAY;
}
@Override
public IIndexInclude[] findIncludedBy(IIndexFile file, int depth) {
return IIndexInclude.EMPTY_INCLUDES_ARRAY;
}
@Override
public IIndexInclude[] findIncludes(IIndexFile file) {
return IIndexInclude.EMPTY_INCLUDES_ARRAY;
}
@Override
public IIndexInclude[] findIncludes(IIndexFile file, int depth) {
return IIndexInclude.EMPTY_INCLUDES_ARRAY;
}
@Override
public void acquireReadLock() {
}
@Override
public void releaseReadLock() {
}
@Override
public boolean hasWaitingReaders() {
return false;
}
@Override
public long getLastWriteAccess() {
return 0;
}
@Override
public IIndexBinding findBinding(IName name) {
return null;
}
@Override
public IIndexBinding[] findBindings(Pattern pattern, boolean isFullyQualified,
IndexFilter filter, IProgressMonitor monitor) {
return IIndexFragmentBinding.EMPTY_INDEX_BINDING_ARRAY;
}
@Override
public IIndexBinding[] findBindings(Pattern[] pattern, boolean isFullyQualified,
IndexFilter filter, IProgressMonitor monitor) throws CoreException {
return IIndexFragmentBinding.EMPTY_INDEX_BINDING_ARRAY;
}
@Override
public IIndexBinding adaptBinding(IBinding binding) {
return null;
}
@Override
public IIndexBinding[] findBindingsForPrefix(char[] prefix, boolean filescope,
IndexFilter filter, IProgressMonitor monitor) {
return IIndexBinding.EMPTY_INDEX_BINDING_ARRAY;
}
@Override
public IIndexBinding[] findBindingsForContentAssist(char[] prefix, boolean filescope,
IndexFilter filter, IProgressMonitor monitor) {
return IIndexBinding.EMPTY_INDEX_BINDING_ARRAY;
}
@Override
public IIndexBinding[] findBindings(char[][] names, IndexFilter filter,
IProgressMonitor monitor) {
return IIndexBinding.EMPTY_INDEX_BINDING_ARRAY;
}
@Override
public IIndexBinding[] findBindings(char[] names, IndexFilter filter,
IProgressMonitor monitor) {
return IIndexBinding.EMPTY_INDEX_BINDING_ARRAY;
}
@Override
public IIndexMacro[] findMacros(char[] name, IndexFilter filter, IProgressMonitor monitor) {
return IIndexMacro.EMPTY_INDEX_MACRO_ARRAY;
}
@Override
public IIndexMacro[] findMacrosForPrefix(char[] prefix, IndexFilter filter, IProgressMonitor monitor) {
return IIndexMacro.EMPTY_INDEX_MACRO_ARRAY;
}
@Override
public IIndexFileSet createFileSet() {
return new IndexFileSet();
}
@Override
public IIndexFile[] getAllFiles() {
return IIndexFile.EMPTY_FILE_ARRAY;
}
@Override
public IIndexFile[] getDefectiveFiles() {
return IIndexFile.EMPTY_FILE_ARRAY;
}
@Override
public IIndexFile[] getFilesWithUnresolvedIncludes() {
return IIndexFile.EMPTY_FILE_ARRAY;
}
@Override
public IIndexBinding[] findBindings(char[] name, boolean fileScopeOnly, IndexFilter filter, IProgressMonitor monitor) {
return IIndexBinding.EMPTY_INDEX_BINDING_ARRAY;
}
@Override
public IIndexBinding[] findMacroContainers(Pattern pattern, IndexFilter filter, IProgressMonitor monitor) {
return IIndexBinding.EMPTY_INDEX_BINDING_ARRAY;
}
@Override
public IScope[] getInlineNamespaces() {
return new IScope[0];
}
@Override
public boolean isFullyInitialized() {
return true;
}
}
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