| /* |
| * 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 org.jetbrains.plugins.groovy.lang.psi.impl.statements.expressions.path; |
| |
| import com.intellij.psi.*; |
| import com.intellij.psi.util.PsiTypesUtil; |
| import com.intellij.psi.util.PsiUtil; |
| import com.intellij.util.containers.ContainerUtil; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrMethodCall; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrReferenceExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.typedef.members.GrGdkMethod; |
| import org.jetbrains.plugins.groovy.lang.psi.impl.GrTraitType; |
| import org.jetbrains.plugins.groovy.lang.psi.typeEnhancers.GrCallExpressionTypeCalculator; |
| import org.jetbrains.plugins.groovy.lang.psi.util.GrTraitUtil; |
| import org.jetbrains.plugins.groovy.lang.psi.util.GroovyCommonClassNames; |
| |
| import java.util.List; |
| |
| /** |
| * Created by Max Medvedev on 21/05/14 |
| */ |
| public class GrWithTraitTypeCalculator extends GrCallExpressionTypeCalculator { |
| @Nullable |
| @Override |
| protected PsiType calculateReturnType(@NotNull GrMethodCall callExpression, @NotNull PsiMethod resolvedMethod) { |
| if (!"withTraits".equals(resolvedMethod.getName())) return null; |
| |
| if (resolvedMethod instanceof GrGdkMethod) { |
| resolvedMethod = ((GrGdkMethod)resolvedMethod).getStaticMethod(); |
| } |
| |
| GrExpression invokedExpression = callExpression.getInvokedExpression(); |
| if (!(invokedExpression instanceof GrReferenceExpression)) return null; |
| GrExpression originalObject = ((GrReferenceExpression)invokedExpression).getQualifierExpression(); |
| if (originalObject == null) return null; |
| |
| PsiType invokedType = originalObject.getType(); |
| if (!(invokedType instanceof PsiClassType)) return null; |
| |
| PsiClass containingClass = resolvedMethod.getContainingClass(); |
| if (containingClass == null || !GroovyCommonClassNames.DEFAULT_GROOVY_METHODS.equals(containingClass.getQualifiedName())) return null; |
| |
| List<PsiClassType> traits = ContainerUtil.newArrayList(); |
| GrExpression[] args = callExpression.getArgumentList().getExpressionArguments(); |
| for (GrExpression arg : args) { |
| PsiType type = arg.getType(); |
| PsiType classItem = PsiUtil.substituteTypeParameter(type, CommonClassNames.JAVA_LANG_CLASS, 0, false); |
| PsiClass psiClass = PsiTypesUtil.getPsiClass(classItem); |
| if (GrTraitUtil.isTrait(psiClass)) { |
| traits.add((PsiClassType)classItem); |
| } |
| } |
| |
| return GrTraitType.createTraitClassType(callExpression, (PsiClassType)invokedType, traits, callExpression.getResolveScope()); |
| } |
| } |