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/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* 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.intellij.lang.properties.psi.impl;
import com.intellij.extapi.psi.PsiFileBase;
import com.intellij.lang.ASTFactory;
import com.intellij.lang.ASTNode;
import com.intellij.lang.properties.*;
import com.intellij.lang.properties.ResourceBundle;
import com.intellij.lang.properties.parsing.PropertiesElementTypes;
import com.intellij.lang.properties.psi.PropertiesElementFactory;
import com.intellij.lang.properties.psi.PropertiesFile;
import com.intellij.lang.properties.psi.Property;
import com.intellij.openapi.fileTypes.FileType;
import com.intellij.psi.FileViewProvider;
import com.intellij.psi.PsiElement;
import com.intellij.psi.TokenType;
import com.intellij.psi.impl.source.tree.ChangeUtil;
import com.intellij.psi.impl.source.tree.TreeElement;
import com.intellij.psi.tree.TokenSet;
import com.intellij.util.ArrayUtil;
import com.intellij.util.IncorrectOperationException;
import com.intellij.util.containers.ContainerUtil;
import com.intellij.util.containers.MostlySingularMultiMap;
import gnu.trove.THashMap;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.*;
public class PropertiesFileImpl extends PsiFileBase implements PropertiesFile {
private static final TokenSet PROPERTIES_LIST_SET = TokenSet.create(PropertiesElementTypes.PROPERTIES_LIST);
private volatile MostlySingularMultiMap<String,IProperty> myPropertiesMap; //guarded by lock
private volatile List<IProperty> myProperties; //guarded by lock
private final Object lock = new Object();
public PropertiesFileImpl(FileViewProvider viewProvider) {
super(viewProvider, PropertiesLanguage.INSTANCE);
}
@Override
@NotNull
public FileType getFileType() {
return PropertiesFileType.INSTANCE;
}
@NonNls
public String toString() {
return "Properties file:" + getName();
}
@Override
@NotNull
public List<IProperty> getProperties() {
ensurePropertiesLoaded();
return myProperties;
}
private ASTNode getPropertiesList() {
return ArrayUtil.getFirstElement(getNode().getChildren(PROPERTIES_LIST_SET));
}
private void ensurePropertiesLoaded() {
if (myPropertiesMap != null) return;
final ASTNode[] props = getPropertiesList().getChildren(PropertiesElementTypes.PROPERTIES);
MostlySingularMultiMap<String, IProperty> propertiesMap = new MostlySingularMultiMap<String, IProperty>();
List<IProperty> properties = new ArrayList<IProperty>(props.length);
for (final ASTNode prop : props) {
final Property property = (Property)prop.getPsi();
String key = property.getUnescapedKey();
propertiesMap.add(key, property);
properties.add(property);
}
synchronized (lock) {
if (myPropertiesMap != null) return;
myProperties = properties;
myPropertiesMap = propertiesMap;
}
}
@Override
public IProperty findPropertyByKey(@NotNull String key) {
ensurePropertiesLoaded();
synchronized (lock) {
Iterator<IProperty> iterator = myPropertiesMap.get(key).iterator();
return iterator.hasNext() ? iterator.next() : null;
}
}
@Override
@NotNull
public List<IProperty> findPropertiesByKey(@NotNull String key) {
ensurePropertiesLoaded();
synchronized (lock) {
return ContainerUtil.collect(myPropertiesMap.get(key).iterator());
}
}
@Override
@NotNull
public ResourceBundle getResourceBundle() {
return PropertiesImplUtil.getResourceBundle(this);
}
@Override
@NotNull
public Locale getLocale() {
return PropertiesUtil.getLocale(getVirtualFile());
}
@Override
public PsiElement add(@NotNull PsiElement element) throws IncorrectOperationException {
if (element instanceof Property) {
throw new IncorrectOperationException("Use addProperty() instead");
}
return super.add(element);
}
@Override
@NotNull
public PsiElement addProperty(@NotNull IProperty property) throws IncorrectOperationException {
if (haveToAddNewLine()) {
insertLineBreakBefore(null);
}
final TreeElement copy = ChangeUtil.copyToElement(property.getPsiElement());
getPropertiesList().addChild(copy);
return copy.getPsi();
}
@Override
@NotNull
public PsiElement addPropertyAfter(@NotNull final Property property, @Nullable final Property anchor) throws IncorrectOperationException {
final TreeElement copy = ChangeUtil.copyToElement(property);
List<IProperty> properties = getProperties();
ASTNode anchorBefore = anchor == null ? properties.isEmpty() ? null : properties.get(0).getPsiElement().getNode()
: anchor.getNode().getTreeNext();
if (anchorBefore != null) {
if (anchorBefore.getElementType() == TokenType.WHITE_SPACE) {
anchorBefore = anchorBefore.getTreeNext();
}
}
if (anchorBefore == null && haveToAddNewLine()) {
insertLineBreakBefore(null);
}
getPropertiesList().addChild(copy, anchorBefore);
if (anchorBefore != null) {
insertLineBreakBefore(anchorBefore);
}
return copy.getPsi();
}
@Override
public IProperty addProperty(String key, String value) {
return (IProperty)addProperty(PropertiesElementFactory.createProperty(getProject(), key, value));
}
private void insertLineBreakBefore(final ASTNode anchorBefore) {
getPropertiesList().addChild(ASTFactory.whitespace("\n"), anchorBefore);
}
private boolean haveToAddNewLine() {
ASTNode lastChild = getPropertiesList().getLastChildNode();
return lastChild != null && !lastChild.getText().endsWith("\n");
}
@Override
@NotNull
public Map<String, String> getNamesMap() {
Map<String, String> result = new THashMap<String, String>();
for (IProperty property : getProperties()) {
result.put(property.getUnescapedKey(), property.getValue());
}
return result;
}
@Override
public void clearCaches() {
super.clearCaches();
synchronized (lock) {
myPropertiesMap = null;
myProperties = null;
}
}
}
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