| /* |
| * 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.psi; |
| |
| import com.intellij.lang.Language; |
| import com.intellij.openapi.application.ApplicationManager; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.extensions.AbstractExtensionPointBean; |
| import com.intellij.openapi.extensions.ExtensionPointName; |
| import com.intellij.patterns.ElementPattern; |
| import com.intellij.patterns.ElementPatternBean; |
| import com.intellij.patterns.StandardPatterns; |
| import com.intellij.util.KeyedLazyInstance; |
| import com.intellij.util.NullableFunction; |
| import com.intellij.util.containers.ContainerUtil; |
| import com.intellij.util.xmlb.annotations.AbstractCollection; |
| import com.intellij.util.xmlb.annotations.Attribute; |
| import com.intellij.util.xmlb.annotations.Property; |
| import com.intellij.util.xmlb.annotations.Tag; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.List; |
| |
| /** |
| * Registers a {@link PsiReferenceProvider} in plugin.xml |
| */ |
| public class PsiReferenceProviderBean extends AbstractExtensionPointBean implements KeyedLazyInstance<PsiReferenceProviderBean> { |
| |
| public static final ExtensionPointName<PsiReferenceProviderBean> EP_NAME = |
| new ExtensionPointName<PsiReferenceProviderBean>("com.intellij.psi.referenceProvider"); |
| |
| @Attribute("language") |
| public String language = Language.ANY.getID(); |
| |
| @Attribute("providerClass") |
| public String className; |
| |
| @Tag("description") |
| public String description; |
| |
| @Property(surroundWithTag = false) |
| @AbstractCollection(surroundWithTag = false) |
| public ElementPatternBean[] patterns; |
| |
| public String getDescription() { |
| return description; |
| } |
| |
| private static final Logger LOG = Logger.getInstance("#com.intellij.psi.PsiReferenceProviderBean"); |
| |
| public PsiReferenceProvider instantiate() { |
| try { |
| return (PsiReferenceProvider)instantiate(className, ApplicationManager.getApplication().getPicoContainer()); |
| } |
| catch (ClassNotFoundException e) { |
| LOG.error(e); |
| } |
| return null; |
| } |
| |
| private static final NullableFunction<ElementPatternBean,ElementPattern<? extends PsiElement>> PATTERN_NULLABLE_FUNCTION = new NullableFunction<ElementPatternBean, ElementPattern<? extends PsiElement>>() { |
| @Override |
| public ElementPattern<? extends PsiElement> fun(ElementPatternBean elementPatternBean) { |
| return elementPatternBean.compilePattern(); |
| } |
| }; |
| |
| @Nullable |
| public ElementPattern<PsiElement> createElementPattern() { |
| if (patterns.length > 1) { |
| List<ElementPattern<? extends PsiElement>> list = ContainerUtil.mapNotNull(patterns, PATTERN_NULLABLE_FUNCTION); |
| //noinspection unchecked |
| return StandardPatterns.or(list.toArray(new ElementPattern[list.size()])); |
| } |
| else if (patterns.length == 1) { |
| return patterns[0].compilePattern(); |
| } |
| else { |
| LOG.error("At least one pattern should be specified"); |
| return null; |
| } |
| } |
| |
| @Override |
| public String getKey() { |
| return language; |
| } |
| |
| @Override |
| public PsiReferenceProviderBean getInstance() { |
| return this; |
| } |
| } |