| /* |
| * Copyright 2000-2013 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.compiler.classFilesIndex.chainsSearch; |
| |
| import com.intellij.compiler.classFilesIndex.chainsSearch.context.ChainCompletionContext; |
| import com.intellij.compiler.classFilesIndex.chainsSearch.context.ContextRelevantStaticMethod; |
| import com.intellij.compiler.classFilesIndex.impl.MethodsUsageIndexReader; |
| import com.intellij.compiler.classFilesIndex.impl.UsageIndexValue; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.*; |
| import com.intellij.psi.search.GlobalSearchScope; |
| import com.intellij.util.SmartList; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| import com.intellij.compiler.classFilesIndex.impl.MethodIncompleteSignature; |
| |
| import java.util.*; |
| |
| /** |
| * @author Dmitry Batkovich |
| */ |
| public class CachedRelevantStaticMethodSearcher { |
| private final HashMap<MethodIncompleteSignature, PsiMethod> myCachedResolveResults = new HashMap<MethodIncompleteSignature, PsiMethod>(); |
| private final MethodsUsageIndexReader myIndexReader; |
| private final ChainCompletionContext myCompletionContext; |
| |
| public CachedRelevantStaticMethodSearcher(final ChainCompletionContext completionContext) { |
| myIndexReader = MethodsUsageIndexReader.getInstance(completionContext.getProject()); |
| myCompletionContext = completionContext; |
| } |
| |
| @NotNull |
| public List<ContextRelevantStaticMethod> getRelevantStaticMethods(final String resultQualifiedClassName, final int minOccurrence) { |
| if (resultQualifiedClassName == null || |
| ChainCompletionStringUtil.isPrimitiveOrArrayOfPrimitives(resultQualifiedClassName) || |
| myCompletionContext.getTarget().getClassQName().equals(resultQualifiedClassName)) { |
| return Collections.emptyList(); |
| } |
| final TreeSet<UsageIndexValue> indexValues = myIndexReader.getMethods(resultQualifiedClassName); |
| if (!indexValues.isEmpty()) { |
| int occurrences = 0; |
| final List<ContextRelevantStaticMethod> relevantMethods = new ArrayList<ContextRelevantStaticMethod>(); |
| for (final UsageIndexValue indexValue : extractStaticMethods(indexValues)) { |
| final MethodIncompleteSignature methodInvocation = indexValue.getMethodIncompleteSignature(); |
| final PsiMethod method; |
| if (myCachedResolveResults.containsKey(methodInvocation)) { |
| method = myCachedResolveResults.get(methodInvocation); |
| } |
| else { |
| final PsiMethod[] methods = myCompletionContext.resolveNotDeprecated(methodInvocation); |
| method = MethodChainsSearchUtil |
| .getMethodWithMinNotPrimitiveParameters(methods, Collections.singleton(myCompletionContext.getTarget().getClassQName())); |
| myCachedResolveResults.put(methodInvocation, method); |
| if (method == null) { |
| return Collections.emptyList(); |
| } |
| } |
| if (method == null) { |
| return Collections.emptyList(); |
| } |
| if (method.hasModifierProperty(PsiModifier.PUBLIC)) { |
| if (isMethodValid(method, myCompletionContext, resultQualifiedClassName)) { |
| occurrences += indexValue.getOccurrences(); |
| if (myCompletionContext.getResolveScope().contains(method.getContainingFile().getVirtualFile())) { |
| relevantMethods.add(new ContextRelevantStaticMethod(method, null)); |
| } |
| if (occurrences >= minOccurrence) { |
| return relevantMethods; |
| } |
| } |
| } |
| } |
| } |
| return Collections.emptyList(); |
| } |
| |
| private static List<UsageIndexValue> extractStaticMethods(final TreeSet<UsageIndexValue> indexValues) { |
| final List<UsageIndexValue> relevantStaticMethods = new SmartList<UsageIndexValue>(); |
| for (final UsageIndexValue indexValue : indexValues) { |
| if (indexValue.getMethodIncompleteSignature().isStatic()) { |
| relevantStaticMethods.add(indexValue); |
| } |
| } |
| return relevantStaticMethods; |
| } |
| |
| private static boolean isMethodValid(final @Nullable PsiMethod method, |
| final ChainCompletionContext completionContext, |
| final String targetTypeShortName) { |
| if (method == null) return false; |
| for (final PsiParameter parameter : method.getParameterList().getParameters()) { |
| final PsiType type = parameter.getType(); |
| final String shortClassName = typeAsShortString(type); |
| if (targetTypeShortName.equals(shortClassName)) return false; |
| if (!ChainCompletionStringUtil.isShortNamePrimitiveOrArrayOfPrimitives(shortClassName) && |
| !completionContext.contains(type.getCanonicalText())) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| @Nullable |
| public static String typeAsShortString(final PsiType type) { |
| if (type instanceof PsiClassType) |
| return ((PsiClassType) type).getClassName(); |
| else if (type instanceof PsiPrimitiveType) |
| return type.getCanonicalText(); |
| else if (type instanceof PsiArrayType) { |
| final String componentTypeAsString = typeAsShortString(((PsiArrayType)type).getComponentType()); |
| if (componentTypeAsString == null) return null; |
| return String.format("%s[]", componentTypeAsString); |
| } |
| return null; |
| } |
| } |