/*
* Copyright (c) 2014, the Dart project authors.
*
* Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.eclipse.org/legal/epl-v10.html
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.dart.engine.internal.index.file;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.google.dart.engine.context.AnalysisContext;
import com.google.dart.engine.element.Element;
import com.google.dart.engine.index.Location;
import com.google.dart.engine.index.Relationship;
import java.util.List;
import java.util.Map;
/**
* A single index file in-memory presentation.
*
* @coverage dart.engine.index
*/
public class IndexNode {
private final AnalysisContext context;
private final ElementCodec elementCodec;
private final RelationshipCodec relationshipCodec;
private final Map<RelationKeyData, List<LocationData>> relations = Maps.newHashMap();
public IndexNode(AnalysisContext context, ElementCodec elementCodec,
RelationshipCodec relationshipCodec) {
this.context = context;
this.elementCodec = elementCodec;
this.relationshipCodec = relationshipCodec;
}
/**
* Returns the {@link AnalysisContext} this node is created for.
*/
public AnalysisContext getContext() {
return context;
}
/**
* Returns number of locations in this node.
*/
public int getLocationCount() {
int locationCount = 0;
for (List<LocationData> locations : relations.values()) {
locationCount += locations.size();
}
return locationCount;
}
/**
* Returns the recorded relations.
*/
public Map<RelationKeyData, List<LocationData>> getRelations() {
return relations;
}
/**
* Return the locations of the elements that have the given relationship with the given element.
*
* @param element the the element that has the relationship with the locations to be returned
* @param relationship the {@link Relationship} between the given element and the locations to be
* returned
*/
public Location[] getRelationships(Element element, Relationship relationship) {
// prepare key
RelationKeyData key = new RelationKeyData(
elementCodec,
relationshipCodec,
element,
relationship);
// find LocationData(s)
List<LocationData> locationDatas = relations.get(key);
if (locationDatas == null) {
return Location.EMPTY_ARRAY;
}
// convert to Location(s)
List<Location> locations = Lists.newArrayList();
for (LocationData locationData : locationDatas) {
Location location = locationData.getLocation(context, elementCodec);
if (location != null) {
locations.add(location);
}
}
return locations.toArray(new Location[locations.size()]);
}
/**
* Records that the given element and location have the given relationship.
*
* @param element the element that is related to the location
* @param relationship the {@link Relationship} between the element and the location
* @param location the {@link Location} where relationship happens
*/
public void recordRelationship(Element element, Relationship relationship, Location location) {
RelationKeyData key = new RelationKeyData(
elementCodec,
relationshipCodec,
element,
relationship);
// prepare LocationData(s)
List<LocationData> locationDatas = relations.get(key);
if (locationDatas == null) {
locationDatas = Lists.newArrayList();
relations.put(key, locationDatas);
}
// add new LocationData
locationDatas.add(new LocationData(elementCodec, location));
}
/**
* Sets relations data. This method is used during loading data from a storage.
*/
public void setRelations(Map<RelationKeyData, List<LocationData>> relations) {
this.relations.clear();
this.relations.putAll(relations);
}
}