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/*******************************************************************************
* Copyright (c) 2005 - 2007 committers of openArchitectureWare 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: committers of openArchitectureWare - initial API and
* implementation
******************************************************************************/
package org.eclipse.xtend.shared.ui.core.search;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.internal.xpand2.ast.Definition;
import org.eclipse.internal.xpand2.ast.ExpandStatement;
import org.eclipse.internal.xpand2.ast.Template;
import org.eclipse.internal.xpand2.model.XpandDefinition;
import org.eclipse.internal.xtend.expression.ast.Identifier;
import org.eclipse.internal.xtend.expression.ast.OperationCall;
import org.eclipse.internal.xtend.expression.ast.SyntaxElement;
import org.eclipse.internal.xtend.xtend.ast.AbstractExtension;
import org.eclipse.internal.xtend.xtend.ast.Extension;
import org.eclipse.internal.xtend.xtend.ast.ExtensionFile;
import org.eclipse.xtend.shared.ui.Activator;
import org.eclipse.xtend.shared.ui.core.IXtendXpandProject;
import org.eclipse.xtend.shared.ui.core.IXtendXpandResource;
import org.eclipse.xtend.shared.ui.internal.XtendLog;
/**
* Search engine for oAW.
*
* @author Sven Efftinge (http://www.efftinge.de)
* @author Peter Friese
*/
public class XtendXpandSearchEngine {
public static List<Definition> findAllDefines(IXtendXpandProject project) {
List<Definition> matches = new ArrayList<Definition>();
IXtendXpandResource[] resources = project.getRegisteredResources();
for (IXtendXpandResource res : resources) {
if (res.getExtXptResource() instanceof Template) {
Template tpl = (Template) res.getExtXptResource();
for (XpandDefinition xdef : tpl.getDefinitions()) {
if (xdef instanceof Definition) {
Definition def = (Definition) xdef;
matches.add(def);
}
}
}
}
return matches;
}
public static List<SearchMatch> findAllOccurrences(IXtendXpandProject project, String identifier) {
List<SearchMatch> matches = new ArrayList<SearchMatch>();
IXtendXpandResource[] resources = project.getRegisteredResources();
for (IXtendXpandResource res : resources) {
if (res.getExtXptResource() instanceof Template) {
Template tpl = (Template) res.getExtXptResource();
for (XpandDefinition xdef : tpl.getDefinitions()) {
if (xdef instanceof Definition) {
Definition def = (Definition) xdef;
if (def.getName().equals(identifier)) {
int startOfDefnitionName = def.getDefName().getStart() - 1;
int lengthOfDefinitionName = def.getDefName().getEnd() - def.getDefName().getStart();
matches.add(new SearchMatch(startOfDefnitionName, lengthOfDefinitionName, res
.getUnderlyingStorage()));
}
}
}
;
}
// there is no visitor api or something similar so far, so we have
// to use a reflective mechanism...
Set<ExpandStatement> ops = findRec(res.getExtXptResource(), ExpandStatement.class, new HashSet<Object>());
for (ExpandStatement expr : ops) {
Identifier definition = expr.getDefinition();
String definitionFQN = definition.getValue();
int lastIndexOf = definitionFQN.lastIndexOf(identifier);
if (lastIndexOf > -1) {
int startOfDefinition = definition.getStart() + lastIndexOf - 1;
int lengthOfDefinition = identifier.length();
matches.add(new SearchMatch(startOfDefinition, lengthOfDefinition, res.getUnderlyingStorage()));
}
}
}
for (IProject p : project.getProject().getProject().getReferencingProjects()) {
IXtendXpandProject oawp = Activator.getExtXptModelManager().findProject(p);
if (oawp != null) {
matches.addAll(findAllOccurrences(oawp, identifier));
}
}
return sort(matches);
}
/**
* finds all operation invocations for the given identifier. Ignores
* parameters and types as well as resource references (i.e. imports)
*/
public static List<SearchMatch> findReferences(IXtendXpandProject project, String identifier) {
List<SearchMatch> matches = new ArrayList<SearchMatch>();
IXtendXpandResource[] resources = project.getRegisteredResources();
for (IXtendXpandResource res : resources) {
// there is no visitor api or something similar so far, so we have
// to use a reflective mechanism...
Set<OperationCall> ops = findRec(res.getExtXptResource(), OperationCall.class, new HashSet<Object>());
for (OperationCall expr : ops) {
if (expr.getName().getValue().equals(identifier)) {
matches.add(new SearchMatch(expr.getName().getStart(), expr.getName().getEnd() - expr.getStart()
- 1, res.getUnderlyingStorage()));
}
}
}
for (IProject p : project.getProject().getProject().getReferencingProjects()) {
IXtendXpandProject oawp = Activator.getExtXptModelManager().findProject(p);
if (oawp != null) {
matches.addAll(findReferences(oawp, identifier));
}
}
return sort(matches);
}
/**
* finds all extension declarations for the given identifier. Ignores
* parameters and types as well as resource references (i.e. imports)
*/
public static List<SearchMatch> findDeclarations(IXtendXpandProject project, String identifier) {
List<SearchMatch> matches = new ArrayList<SearchMatch>();
IXtendXpandResource[] resources = project.getRegisteredResources();
for (IXtendXpandResource res : resources) {
if (res.getExtXptResource() instanceof ExtensionFile) {
ExtensionFile ef = (ExtensionFile) res.getExtXptResource();
for (Extension ext : ef.getExtensions()) {
if (ext instanceof AbstractExtension) {
AbstractExtension ae = (AbstractExtension) ext;
if (ext.getName().equals(identifier)) {
Identifier id = ae.getNameIdentifier();
matches.add(new SearchMatch(id.getStart(), id.getEnd() - id.getStart() + 1 /*
* sorry
* for
* the
* "+1"-hack
*/, res.getUnderlyingStorage()));
}
}
}
;
}
if (res.getExtXptResource() instanceof Template) {
Template tpl = (Template) res.getExtXptResource();
for (XpandDefinition xdef : tpl.getDefinitions()) {
if (xdef instanceof Definition) {
Definition def = (Definition) xdef;
if (def.getName().equals(identifier)) {
matches.add(new SearchMatch(def.getDefName().getStart(), def.getDefName().getEnd()
- def.getDefName().getStart(), res.getUnderlyingStorage()));
}
}
}
;
}
}
try {
for (IProject p : project.getProject().getProject().getReferencedProjects()) {
IXtendXpandProject oawp = Activator.getExtXptModelManager().findProject(p);
if (oawp != null) {
matches.addAll(findDeclarations(oawp, identifier));
}
}
} catch (CoreException e) {
XtendLog.logError(e);
}
return sort(matches);
}
private static List<SearchMatch> sort(List<SearchMatch> searchmatches) {
Collections.sort(searchmatches, new Comparator<SearchMatch>() {
public int compare(SearchMatch o1, SearchMatch o2) {
if (o1.getFile() == null) {
return -1;
}
if (o2.getFile() == null) {
return 1;
}
int fileCompare = o1.getFile().getName().compareTo(o2.getFile().getName());
if (fileCompare == 0) {
return ((Integer) o1.getOffSet()).compareTo(o2.getOffSet());
}
return fileCompare;
}
});
return searchmatches;
}
private static <T extends SyntaxElement> Set<T> findRec(Object res, Class<T> clazz, Set<Object> visitedNodes) {
if (visitedNodes.contains(res)) {
return Collections.emptySet();
}
visitedNodes.add(res);
Set<T> result = new HashSet<T>();
if (clazz.isInstance(res)) {
result.add((T) res);
}
Class instanceClass = res.getClass();
Method[] methods = instanceClass.getMethods();
for (Method method : methods) {
int mod = method.getModifiers();
if (Modifier.isPublic(mod) && !Modifier.isStatic(mod) && method.getName().startsWith("get")
&& method.getParameterTypes().length == 0) {
Class<?> pType = method.getReturnType();
// if it's a SyntaxElement navigate it
if (Collection.class.isAssignableFrom(pType) || SyntaxElement.class.isAssignableFrom(pType)) {
Object invRes;
try {
invRes = method.invoke(res, new Object[] {});
if (invRes instanceof Collection) {
for (Object o : (Collection<?>) invRes) {
result.addAll(findRec(o, clazz, visitedNodes));
}
} else if (invRes != null) {
result.addAll(findRec(invRes, clazz, visitedNodes));
}
} catch (Exception e) {
XtendLog.logError(e);
}
}
}
}
return result;
}
}
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