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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.psi.impl.source.resolve;
import com.intellij.openapi.util.Key;
import com.intellij.pom.java.LanguageLevel;
import com.intellij.psi.*;
import com.intellij.psi.filters.ElementFilter;
import com.intellij.psi.infos.CandidateInfo;
import com.intellij.psi.scope.ElementClassFilter;
import com.intellij.psi.scope.ElementClassHint;
import com.intellij.psi.scope.JavaScopeProcessorEvent;
import com.intellij.psi.scope.PsiConflictResolver;
import com.intellij.psi.scope.PsiScopeProcessor;
import com.intellij.psi.scope.conflictResolvers.JavaVariableConflictResolver;
import com.intellij.psi.scope.processor.ConflictFilterProcessor;
import com.intellij.psi.util.PsiUtil;
import com.intellij.util.SmartList;
import org.jetbrains.annotations.NotNull;
/**
* @author ik, dsl
*/
public class VariableResolverProcessor extends ConflictFilterProcessor implements ElementClassHint {
private static final ElementFilter ourFilter = ElementClassFilter.VARIABLE;
private boolean myStaticScopeFlag = false;
private final PsiClass myAccessClass;
private PsiElement myCurrentFileContext = null;
public VariableResolverProcessor(@NotNull PsiJavaCodeReferenceElement place, @NotNull PsiFile placeFile) {
super(place.getText(), ourFilter, new PsiConflictResolver[]{new JavaVariableConflictResolver()}, new SmartList<CandidateInfo>(), place, placeFile);
PsiElement referenceName = place.getReferenceNameElement();
if (referenceName instanceof PsiIdentifier){
setName(referenceName.getText());
}
PsiClass access = null;
PsiElement qualifier = place.getQualifier();
if (qualifier instanceof PsiExpression) {
final JavaResolveResult accessClass = PsiUtil.getAccessObjectClass((PsiExpression)qualifier);
final PsiElement element = accessClass.getElement();
if (element instanceof PsiTypeParameter) {
PsiElementFactory factory = JavaPsiFacade.getInstance(placeFile.getProject()).getElementFactory();
final PsiClassType type = factory.createType((PsiTypeParameter)element);
final PsiType accessType = accessClass.getSubstitutor().substitute(type);
if (accessType instanceof PsiArrayType) {
LanguageLevel languageLevel = PsiUtil.getLanguageLevel(placeFile);
access = factory.getArrayClass(languageLevel);
}
else if (accessType instanceof PsiClassType) {
access = ((PsiClassType)accessType).resolve();
}
}
else if (element instanceof PsiClass) {
access = (PsiClass)element;
}
}
myAccessClass = access;
}
@Override
public final void handleEvent(@NotNull PsiScopeProcessor.Event event, Object associated) {
super.handleEvent(event, associated);
if(event == JavaScopeProcessorEvent.START_STATIC){
myStaticScopeFlag = true;
}
else if (JavaScopeProcessorEvent.SET_CURRENT_FILE_CONTEXT.equals(event)) {
myCurrentFileContext = (PsiElement)associated;
}
}
@Override
public void add(@NotNull PsiElement element, @NotNull PsiSubstitutor substitutor) {
final boolean staticProblem = myStaticScopeFlag && !((PsiModifierListOwner)element).hasModifierProperty(PsiModifier.STATIC);
add(new CandidateInfo(element, substitutor, myPlace, myAccessClass, staticProblem, myCurrentFileContext));
}
@Override
public boolean shouldProcess(DeclarationKind kind) {
return kind == DeclarationKind.VARIABLE || kind == DeclarationKind.FIELD || kind == DeclarationKind.ENUM_CONST;
}
@Override
public boolean execute(@NotNull PsiElement element, @NotNull ResolveState state) {
if (!(element instanceof PsiField) && (myName == null || PsiUtil.checkName(element, myName, myPlace))) {
super.execute(element, state);
return myResults.isEmpty();
}
return super.execute(element, state);
}
@Override
public <T> T getHint(@NotNull Key<T> hintKey) {
if (hintKey == ElementClassHint.KEY) {
return (T)this;
}
return super.getHint(hintKey);
}
}
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