| /* |
| * Copyright 2006-2013 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.bugs; |
| |
| import com.intellij.psi.*; |
| import com.intellij.psi.util.PsiUtil; |
| import com.intellij.psi.util.TypeConversionUtil; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class PrimitiveArrayArgumentToVariableArgMethodInspection extends BaseInspection { |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message("primitive.array.argument.to.var.arg.method.display.name"); |
| } |
| |
| @Override |
| @NotNull |
| public String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message("primitive.array.argument.to.var.arg.method.problem.descriptor"); |
| } |
| |
| @Override |
| public boolean isEnabledByDefault() { |
| return true; |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new PrimitiveArrayArgumentToVariableArgVisitor(); |
| } |
| |
| private static class PrimitiveArrayArgumentToVariableArgVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitMethodCallExpression(@NotNull PsiMethodCallExpression call) { |
| super.visitMethodCallExpression(call); |
| if (!PsiUtil.isLanguageLevel5OrHigher(call)) { |
| return; |
| } |
| final PsiExpressionList argumentList = call.getArgumentList(); |
| final PsiExpression[] arguments = argumentList.getExpressions(); |
| if (arguments.length == 0) { |
| return; |
| } |
| final PsiExpression lastArgument = arguments[arguments.length - 1]; |
| final PsiType argumentType = lastArgument.getType(); |
| if (!isPrimitiveArrayType(argumentType)) { |
| return; |
| } |
| final JavaResolveResult result = call.resolveMethodGenerics(); |
| final PsiMethod method = (PsiMethod)result.getElement(); |
| if (method == null) { |
| return; |
| } |
| final PsiParameterList parameterList = method.getParameterList(); |
| if (parameterList.getParametersCount() != arguments.length) { |
| return; |
| } |
| final PsiParameter[] parameters = parameterList.getParameters(); |
| final PsiParameter lastParameter = parameters[parameters.length - 1]; |
| if (!lastParameter.isVarArgs()) { |
| return; |
| } |
| final PsiType parameterType = lastParameter.getType(); |
| if (isDeepPrimitiveArrayType(parameterType, result.getSubstitutor())) { |
| return; |
| } |
| registerError(lastArgument); |
| } |
| } |
| |
| private static boolean isPrimitiveArrayType(PsiType type) { |
| if (!(type instanceof PsiArrayType)) { |
| return false; |
| } |
| final PsiType componentType = ((PsiArrayType)type).getComponentType(); |
| return TypeConversionUtil.isPrimitiveAndNotNull(componentType); |
| } |
| |
| private static boolean isDeepPrimitiveArrayType(PsiType type, PsiSubstitutor substitutor) { |
| if (!(type instanceof PsiEllipsisType)) { |
| return false; |
| } |
| final PsiType componentType = type.getDeepComponentType(); |
| final PsiType substitute = substitutor.substitute(componentType); |
| return TypeConversionUtil.isPrimitiveAndNotNull(substitute.getDeepComponentType()); |
| } |
| } |