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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.jetbrains.plugins.groovy.lang.completion;
import com.intellij.codeInsight.completion.InsertionContext;
import com.intellij.psi.*;
import com.intellij.psi.scope.BaseScopeProcessor;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.plugins.groovy.dsl.GroovyDslFileIndex;
import org.jetbrains.plugins.groovy.lang.completion.closureParameters.ClosureDescriptor;
import org.jetbrains.plugins.groovy.lang.completion.closureParameters.ClosureParameterInfo;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.blocks.GrClosableBlock;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrExpression;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrReferenceExpression;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.typedef.GrTypeDefinition;
import org.jetbrains.plugins.groovy.lang.psi.impl.statements.expressions.GrReferenceResolveUtil;
import org.jetbrains.plugins.groovy.lang.psi.impl.statements.expressions.TypesUtil;
import org.jetbrains.plugins.groovy.lang.psi.util.GroovyCommonClassNames;
import java.util.ArrayList;
import java.util.List;
/**
* @author Max Medvedev
*/
public class GdslClosureCompleter extends ClosureCompleter {
@Override
protected List<ClosureParameterInfo> getParameterInfos(InsertionContext context,
PsiMethod method,
PsiSubstitutor substitutor,
PsiElement place) {
final ArrayList<ClosureDescriptor> descriptors = new ArrayList<ClosureDescriptor>();
GrReferenceExpression ref = (GrReferenceExpression)place;
PsiType qtype = GrReferenceResolveUtil.getQualifierType(ref);
if (qtype == null) return null;
GrExpression qualifier = ref.getQualifier();
if (qualifier != null) {
PsiType type = qualifier.getType();
if (type == null) return null;
processExecutors(qtype, ref, descriptors);
}
else {
PsiElementFactory factory = JavaPsiFacade.getElementFactory(context.getProject());
for (PsiElement parent = ref.getParent(); parent != null; parent = parent.getParent()) {
if (parent instanceof GrClosableBlock) {
processExecutors(TypesUtil.createTypeByFQClassName(GroovyCommonClassNames.GROOVY_LANG_CLOSURE, ref), ref, descriptors);
}
else if (parent instanceof GrTypeDefinition) {
processExecutors(factory.createType(((GrTypeDefinition)parent), PsiType.EMPTY_ARRAY), ref, descriptors);
}
}
}
for (ClosureDescriptor descriptor : descriptors) {
if (descriptor.isMethodApplicable(method, ref)) {
return descriptor.getParameters();
}
}
return null;
}
private static void processExecutors(PsiType qtype, GrReferenceExpression ref, final ArrayList<ClosureDescriptor> descriptors) {
GroovyDslFileIndex.processExecutors(qtype, ref, new BaseScopeProcessor() {
@Override
public boolean execute(@NotNull PsiElement element, @NotNull ResolveState state) {
if (element instanceof ClosureDescriptor) {
descriptors.add((ClosureDescriptor)element);
}
return true;
}
}, ResolveState.initial());
}
}
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