| /* |
| * Copyright 2003-2014 Dave Griffith, Bas Leijdekkers |
| * |
| * 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.siyeh.ig.performance; |
| |
| import com.intellij.psi.*; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| public class CollectionsMustHaveInitialCapacityInspection |
| extends BaseInspection { |
| |
| @NonNls |
| private static final Set<String> collectionClassesRequiringCapacity = new HashSet<String>(); |
| static { |
| collectionClassesRequiringCapacity.add("java.util.concurrent.ConcurrentHashMap"); |
| collectionClassesRequiringCapacity.add("java.util.concurrent.PriorityBlockingQueue"); |
| collectionClassesRequiringCapacity.add("java.util.ArrayDeque"); |
| collectionClassesRequiringCapacity.add("java.util.ArrayList"); |
| collectionClassesRequiringCapacity.add("java.util.BitSet"); |
| collectionClassesRequiringCapacity.add("java.util.HashMap"); |
| collectionClassesRequiringCapacity.add("java.util.Hashtable"); |
| collectionClassesRequiringCapacity.add("java.util.HashSet"); |
| collectionClassesRequiringCapacity.add("java.util.IdentityHashMap"); |
| collectionClassesRequiringCapacity.add("java.util.LinkedHashMap"); |
| collectionClassesRequiringCapacity.add("java.util.LinkedHashSet"); |
| collectionClassesRequiringCapacity.add("java.util.PriorityQueue"); |
| collectionClassesRequiringCapacity.add("java.util.Vector"); |
| collectionClassesRequiringCapacity.add("java.util.WeakHashMap"); |
| } |
| |
| @Override |
| @NotNull |
| public String getID() { |
| return "CollectionWithoutInitialCapacity"; |
| } |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message( |
| "collections.must.have.initial.capacity.display.name"); |
| } |
| |
| @Override |
| @NotNull |
| protected String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message( |
| "collections.must.have.initial.capacity.problem.descriptor"); |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new CollectionInitialCapacityVisitor(); |
| } |
| |
| private static class CollectionInitialCapacityVisitor |
| extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitNewExpression(@NotNull PsiNewExpression expression) { |
| super.visitNewExpression(expression); |
| final PsiType type = expression.getType(); |
| if (!isCollectionWithInitialCapacity(type)) { |
| return; |
| } |
| final PsiExpressionList argumentList = expression.getArgumentList(); |
| if (argumentList == null || argumentList.getExpressions().length != 0) { |
| return; |
| } |
| registerNewExpressionError(expression); |
| } |
| |
| public static boolean isCollectionWithInitialCapacity(@Nullable PsiType type) { |
| if (!(type instanceof PsiClassType)) { |
| return false; |
| } |
| final PsiClassType classType = (PsiClassType)type; |
| final PsiClass resolved = classType.resolve(); |
| if (resolved == null) { |
| return false; |
| } |
| final String className = resolved.getQualifiedName(); |
| return collectionClassesRequiringCapacity.contains(className); |
| } |
| } |
| } |