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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 org.intellij.plugins.intelliLang.inject.groovy;
import com.intellij.openapi.fileTypes.StdFileTypes;
import com.intellij.openapi.progress.EmptyProgressIndicator;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.Key;
import com.intellij.openapi.util.ModificationTracker;
import com.intellij.patterns.compiler.PatternClassBean;
import com.intellij.patterns.compiler.PatternCompilerFactory;
import com.intellij.psi.*;
import com.intellij.psi.impl.cache.CacheManager;
import com.intellij.psi.impl.search.LowLevelSearchUtil;
import com.intellij.psi.impl.source.resolve.FileContextUtil;
import com.intellij.psi.scope.PsiScopeProcessor;
import com.intellij.psi.search.GlobalSearchScope;
import com.intellij.psi.search.TextOccurenceProcessor;
import com.intellij.psi.search.UsageSearchContext;
import com.intellij.psi.util.CachedValue;
import com.intellij.psi.util.CachedValueProvider;
import com.intellij.psi.util.CachedValuesManager;
import com.intellij.psi.util.PsiTreeUtil;
import com.intellij.psi.xml.XmlTag;
import com.intellij.psi.xml.XmlText;
import com.intellij.util.Processor;
import com.intellij.util.containers.ContainerUtil;
import com.intellij.util.text.StringSearcher;
import org.intellij.plugins.intelliLang.inject.InjectorUtils;
import org.intellij.plugins.intelliLang.inject.config.BaseInjection;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.plugins.groovy.GroovyFileType;
import org.jetbrains.plugins.groovy.lang.resolve.NonCodeMembersContributor;
import java.util.Collections;
import java.util.List;
/**
* @author Gregory.Shrago
*/
public class PatternEditorContextMembersProvider extends NonCodeMembersContributor {
public static final Key<CachedValue<List<PsiElement>>> INJECTION_PARSED_CONTEXT = Key.create("INJECTION_PARSED_CONTEXT");
@Override
public void processDynamicElements(@NotNull PsiType qualifierType,
@NotNull PsiScopeProcessor processor,
@NotNull PsiElement place,
@NotNull ResolveState state) {
final PsiFile file = place.getContainingFile().getOriginalFile();
CachedValue<List<PsiElement>> value = file.getUserData(INJECTION_PARSED_CONTEXT);
if (value == null) {
final BaseInjection injection = file.getUserData(BaseInjection.INJECTION_KEY);
final CachedValueProvider<List<PsiElement>> provider;
if (injection == null) {
provider = createDevProvider(file);
}
else {
provider = createPatternProvider(injection, file);
}
if (provider == null) return;
file.putUserData(INJECTION_PARSED_CONTEXT,
value = CachedValuesManager.getManager(file.getProject()).createCachedValue(provider, false));
}
final List<PsiElement> roots = value.getValue();
for (PsiElement root : roots) {
if (!root.processDeclarations(processor, state, null, place)) return;
}
}
private static CachedValueProvider<List<PsiElement>> createPatternProvider(final BaseInjection injection, final PsiFile file) {
return new CachedValueProvider<List<PsiElement>>() {
@Override
public Result<List<PsiElement>> compute() {
return new Result<List<PsiElement>>(Collections.<PsiElement>singletonList(
getRootByClasses(InjectorUtils.getPatternClasses(injection.getSupportId()), file.getProject())),
ModificationTracker.NEVER_CHANGED);
}
};
}
private static PsiFile getRootByClasses(Class[] classes, Project project) {
final String text = PatternCompilerFactory.getFactory().getPatternCompiler(classes).dumpContextDeclarations();
return PsiFileFactory.getInstance(project).createFileFromText("context.groovy", GroovyFileType.GROOVY_FILE_TYPE, text);
}
@Nullable
private static CachedValueProvider<List<PsiElement>> createDevProvider(final PsiFile file) {
final XmlTag tag = getTagByInjectedFile(file);
final XmlTag parentTag = tag == null ? null : tag.getParentTag();
final String parentTagName = parentTag == null ? null : parentTag.getName();
final String name = tag == null ? null : tag.getName();
if ("place".equals(name) && "injection".equals(parentTagName) && parentTag != null) {
return new CachedValueProvider<List<PsiElement>>() {
@Override
public Result<List<PsiElement>> compute() {
final XmlTag tag = getTagByInjectedFile(file);
final XmlTag parentTag = tag == null ? null : tag.getParentTag();
if (parentTag == null) return Result.create(Collections.<PsiElement>emptyList(), file);
return new Result<List<PsiElement>>(getRootsByClassNames(file, parentTag.getAttributeValue("injector-id")), parentTag.getContainingFile());
}
};
}
else if ("pattern".equals(name) && parentTag != null) {
return new CachedValueProvider<List<PsiElement>>() {
@Override
public Result<List<PsiElement>> compute() {
final XmlTag tag = getTagByInjectedFile(file);
if (tag == null) return Result.create(Collections.<PsiElement>emptyList(), file);
return new Result<List<PsiElement>>(getRootsByClassNames(file, tag.getAttributeValue("type")), tag.getContainingFile());
}
};
}
else return null;
}
@Nullable
private static XmlTag getTagByInjectedFile(final PsiFile file) {
final SmartPsiElementPointer pointer = file.getUserData(FileContextUtil.INJECTED_IN_ELEMENT);
final PsiElement element = pointer == null? null : pointer.getElement();
return element instanceof XmlText ? ((XmlText)element).getParentTag() : null;
}
private static List<PsiElement> getRootsByClassNames(PsiFile file, String type) {
final List<PsiElement> roots = ContainerUtil.createLockFreeCopyOnWriteList();
final Project project = file.getProject();
final JavaPsiFacade psiFacade = JavaPsiFacade.getInstance(project);
final PsiClass beanClass = psiFacade.findClass(PatternClassBean.class.getName(), GlobalSearchScope.allScope(project));
if (beanClass != null) {
final GlobalSearchScope scope =
GlobalSearchScope.getScopeRestrictedByFileTypes(GlobalSearchScope.allScope(project), StdFileTypes.XML);
final TextOccurenceProcessor occurenceProcessor = new TextOccurenceProcessor() {
@Override
public boolean execute(@NotNull PsiElement element, int offsetInElement) {
final XmlTag tag = PsiTreeUtil.getParentOfType(element, XmlTag.class);
final String className = tag == null ? null : tag.getAttributeValue("className");
if (className != null && tag.getLocalName().endsWith("patternClass")) {
ContainerUtil.addIfNotNull(psiFacade.findClass(className, GlobalSearchScope.allScope(project)), roots);
}
return true;
}
};
final StringSearcher searcher = new StringSearcher("patternClass", true, true);
CacheManager.SERVICE.getInstance(beanClass.getProject()).processFilesWithWord(new Processor<PsiFile>() {
@Override
public boolean process(PsiFile psiFile) {
LowLevelSearchUtil
.processElementsContainingWordInElement(occurenceProcessor, psiFile, searcher, true, new EmptyProgressIndicator());
return true;
}
}, searcher.getPattern(), UsageSearchContext.IN_FOREIGN_LANGUAGES, scope, searcher.isCaseSensitive());
}
final Class[] classes = PatternCompilerFactory.getFactory().getPatternClasses(type);
if (classes.length != 0) {
roots.add(getRootByClasses(classes, project));
}
return roots;
}
}
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