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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.usages;
import com.intellij.codeInsight.highlighting.ReadWriteAccessDetector;
import com.intellij.openapi.extensions.Extensions;
import com.intellij.psi.PsiElement;
import com.intellij.psi.SmartPointerManager;
import com.intellij.psi.SmartPsiElementPointer;
import com.intellij.usageView.UsageInfo;
import com.intellij.util.Function;
import com.intellij.util.containers.ContainerUtil;
import org.jetbrains.annotations.NotNull;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* @author Eugene Zhuravlev
* Date: Jan 17, 2005
*/
public class UsageInfoToUsageConverter {
private UsageInfoToUsageConverter() {
}
public static class TargetElementsDescriptor {
private final List<SmartPsiElementPointer<PsiElement>> myPrimarySearchedElements;
private final List<SmartPsiElementPointer<PsiElement>> myAdditionalSearchedElements;
public TargetElementsDescriptor(@NotNull PsiElement element) {
this(new PsiElement[]{element});
}
public TargetElementsDescriptor(@NotNull PsiElement[] primarySearchedElements) {
this(primarySearchedElements, PsiElement.EMPTY_ARRAY);
}
public TargetElementsDescriptor(@NotNull PsiElement[] primarySearchedElements, @NotNull PsiElement[] additionalSearchedElements) {
myPrimarySearchedElements = convertToSmartPointers(primarySearchedElements);
myAdditionalSearchedElements = convertToSmartPointers(additionalSearchedElements);
}
private static final Function<SmartPsiElementPointer<PsiElement>,PsiElement> SMARTPOINTER_TO_ELEMENT_MAPPER = new Function<SmartPsiElementPointer<PsiElement>, PsiElement>() {
@Override
public PsiElement fun(final SmartPsiElementPointer<PsiElement> pointer) {
return pointer.getElement();
}
};
@NotNull
private static PsiElement[] convertToPsiElements(@NotNull List<SmartPsiElementPointer<PsiElement>> primary) {
return ContainerUtil.toArray(ContainerUtil.mapNotNull(primary, SMARTPOINTER_TO_ELEMENT_MAPPER), PsiElement.ARRAY_FACTORY);
}
@NotNull
private static List<SmartPsiElementPointer<PsiElement>> convertToSmartPointers(@NotNull PsiElement[] primaryElements) {
if (primaryElements.length == 0) return Collections.emptyList();
final SmartPointerManager smartPointerManager = SmartPointerManager.getInstance(primaryElements[0].getProject());
return ContainerUtil.mapNotNull(primaryElements, new Function<PsiElement, SmartPsiElementPointer<PsiElement>>() {
@Override
public SmartPsiElementPointer<PsiElement> fun(final PsiElement s) {
return smartPointerManager.createSmartPsiElementPointer(s);
}
});
}
/**
* A read-only attribute describing the target as a "primary" target.
* A primary target is a target that was the main purpose of the search.
* All usages of a non-primary target should be considered as a special case of usages of the corresponding primary target.
* Example: searching field and its getter and setter methods -
* the field searched is a primary target, and its accessor methods are non-primary targets, because
* for this particular search usages of getter/setter methods are to be considered as a usages of the corresponding field.
*/
@NotNull
public PsiElement[] getPrimaryElements() {
return convertToPsiElements(myPrimarySearchedElements);
}
@NotNull
public PsiElement[] getAdditionalElements() {
return convertToPsiElements(myAdditionalSearchedElements);
}
@NotNull
public List<PsiElement> getAllElements() {
List<PsiElement> result = new ArrayList<PsiElement>(myPrimarySearchedElements.size() + myAdditionalSearchedElements.size());
for (SmartPsiElementPointer pointer : myPrimarySearchedElements) {
PsiElement element = pointer.getElement();
if (element != null) {
result.add(element);
}
}
for (SmartPsiElementPointer pointer : myAdditionalSearchedElements) {
PsiElement element = pointer.getElement();
if (element != null) {
result.add(element);
}
}
return result;
}
@NotNull
public List<SmartPsiElementPointer<PsiElement>> getAllElementPointers() {
List<SmartPsiElementPointer<PsiElement>> result = new ArrayList<SmartPsiElementPointer<PsiElement>>(myPrimarySearchedElements.size() + myAdditionalSearchedElements.size());
result.addAll(myPrimarySearchedElements);
result.addAll(myAdditionalSearchedElements);
return result;
}
}
@NotNull
public static Usage convert(@NotNull TargetElementsDescriptor descriptor, @NotNull UsageInfo usageInfo) {
PsiElement[] primaryElements = descriptor.getPrimaryElements();
return convert(primaryElements, usageInfo);
}
@NotNull
public static Usage convert(@NotNull PsiElement[] primaryElements, @NotNull UsageInfo usageInfo) {
PsiElement usageElement = usageInfo.getElement();
for(ReadWriteAccessDetector detector: Extensions.getExtensions(ReadWriteAccessDetector.EP_NAME)) {
if (isReadWriteAccessibleElements(primaryElements, detector)) {
final ReadWriteAccessDetector.Access rwAccess = detector.getExpressionAccess(usageElement);
return new ReadWriteAccessUsageInfo2UsageAdapter(usageInfo,
rwAccess != ReadWriteAccessDetector.Access.Write,
rwAccess != ReadWriteAccessDetector.Access.Read);
}
}
return new UsageInfo2UsageAdapter(usageInfo);
}
@NotNull
public static Usage[] convert(@NotNull TargetElementsDescriptor descriptor, @NotNull UsageInfo[] usageInfos) {
Usage[] usages = new Usage[usageInfos.length];
for (int i = 0; i < usages.length; i++) {
usages[i] = convert(descriptor, usageInfos[i]);
}
return usages;
}
@NotNull
public static Usage[] convert(@NotNull final PsiElement[] primaryElements, @NotNull UsageInfo[] usageInfos) {
Usage[] usages = ContainerUtil.map(usageInfos, new Function<UsageInfo, Usage>() {
@Override
public Usage fun(UsageInfo info) {
return convert(primaryElements, info);
}
}, new Usage[usageInfos.length]);
return usages;
}
private static boolean isReadWriteAccessibleElements(@NotNull PsiElement[] elements, @NotNull ReadWriteAccessDetector detector) {
if (elements.length == 0) {
return false;
}
for (PsiElement element : elements) {
if (!detector.isReadWriteAccessible(element)) return false;
}
return true;
}
}
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