| /* |
| * 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.psi.impl.source.resolve.graphInference.constraints; |
| |
| import com.intellij.codeInsight.ExceptionUtil; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.psi.*; |
| import com.intellij.psi.impl.source.resolve.graphInference.InferenceSession; |
| import com.intellij.psi.impl.source.resolve.graphInference.InferenceVariable; |
| import com.intellij.psi.impl.source.resolve.graphInference.PsiPolyExpressionUtil; |
| import com.intellij.psi.util.PsiUtil; |
| import com.intellij.psi.util.TypeConversionUtil; |
| import com.intellij.util.Function; |
| import com.intellij.util.containers.ContainerUtil; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Set; |
| |
| /** |
| * User: anna |
| */ |
| public class CheckedExceptionCompatibilityConstraint extends InputOutputConstraintFormula { |
| private static final Logger LOG = Logger.getInstance("#" + CheckedExceptionCompatibilityConstraint.class.getName()); |
| private final PsiExpression myExpression; |
| private PsiType myT; |
| |
| public CheckedExceptionCompatibilityConstraint(PsiExpression expression, PsiType t) { |
| myExpression = expression; |
| myT = t; |
| } |
| |
| @Override |
| public boolean reduce(InferenceSession session, List<ConstraintFormula> constraints) { |
| if (!PsiPolyExpressionUtil.isPolyExpression(myExpression) || |
| myExpression instanceof PsiCallExpression) { |
| return true; |
| } |
| if (myExpression instanceof PsiParenthesizedExpression) { |
| constraints.add(new CheckedExceptionCompatibilityConstraint(((PsiParenthesizedExpression)myExpression).getExpression(), myT)); |
| return true; |
| } |
| if (myExpression instanceof PsiConditionalExpression) { |
| final PsiExpression thenExpression = ((PsiConditionalExpression)myExpression).getThenExpression(); |
| if (thenExpression != null) { |
| constraints.add(new CheckedExceptionCompatibilityConstraint(thenExpression, myT)); |
| } |
| final PsiExpression elseExpression = ((PsiConditionalExpression)myExpression).getElseExpression(); |
| if (elseExpression != null) { |
| constraints.add(new CheckedExceptionCompatibilityConstraint(elseExpression, myT)); |
| } |
| return true; |
| } |
| if (myExpression instanceof PsiLambdaExpression || myExpression instanceof PsiMethodReferenceExpression) { |
| if (LambdaHighlightingUtil.checkInterfaceFunctional(myT) != null) { |
| return false; |
| } |
| final PsiMethod interfaceMethod = LambdaUtil.getFunctionalInterfaceMethod(myT); |
| if (interfaceMethod == null) { |
| return false; |
| } |
| |
| final PsiSubstitutor substitutor = LambdaUtil.getSubstitutor(interfaceMethod, PsiUtil.resolveGenericsClassInType(myT)); |
| for (PsiParameter parameter : interfaceMethod.getParameterList().getParameters()) { |
| if (!session.isProperType(substitutor.substitute(parameter.getType()))) return false; |
| } |
| final PsiType returnType = interfaceMethod.getReturnType(); |
| LOG.assertTrue(returnType != null, interfaceMethod); |
| if (!session.isProperType(substitutor.substitute(returnType))) return false; |
| |
| final List<PsiType> |
| expectedThrownTypes = ContainerUtil.map(interfaceMethod.getThrowsList().getReferencedTypes(), new Function<PsiType, PsiType>() { |
| @Override |
| public PsiType fun(PsiType type) { |
| return substitutor.substitute(type); |
| } |
| }); |
| final List<PsiType> expectedNonProperThrownTypes = new ArrayList<PsiType>(); |
| for (PsiType type : expectedThrownTypes) { |
| if (!session.isProperType(type)) { |
| expectedNonProperThrownTypes.add(type); |
| } |
| } |
| |
| final List<PsiType> thrownTypes = new ArrayList<PsiType>(); |
| if (myExpression instanceof PsiLambdaExpression) { |
| //todo |
| } else { |
| final PsiElement resolve = ((PsiMethodReferenceExpression)myExpression).resolve(); |
| if (resolve instanceof PsiMethod) { |
| for (PsiClassType type : ((PsiMethod)resolve).getThrowsList().getReferencedTypes()) { |
| if (!ExceptionUtil.isUncheckedException(type)) { |
| thrownTypes.add(type); |
| } |
| } |
| } |
| } |
| |
| if (expectedNonProperThrownTypes.isEmpty()) { |
| for (PsiType thrownType : thrownTypes) { |
| if (!isAddressed(expectedThrownTypes, thrownType)) return false; |
| } |
| } else { |
| final ArrayList<PsiType> expectedProperTypes = new ArrayList<PsiType>(expectedThrownTypes); |
| expectedProperTypes.retainAll(expectedNonProperThrownTypes); |
| for (PsiType thrownType : thrownTypes) { |
| if (!isAddressed(expectedProperTypes, thrownType)) { |
| for (PsiType expectedNonProperThrownType : expectedNonProperThrownTypes) { |
| constraints.add(new TypeCompatibilityConstraint(expectedNonProperThrownType, thrownType)); |
| } |
| } |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| private static boolean isAddressed(List<PsiType> expectedThrownTypes, PsiType thrownType) { |
| for (PsiType expectedThrownType : expectedThrownTypes) { |
| if (TypeConversionUtil.isAssignable(expectedThrownType, thrownType)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| @Override |
| protected PsiExpression getExpression() { |
| return myExpression; |
| } |
| |
| @Override |
| protected PsiType getT() { |
| return myT; |
| } |
| |
| @Override |
| protected void setT(PsiType t) { |
| myT = t; |
| } |
| |
| @Override |
| protected InputOutputConstraintFormula createSelfConstraint(PsiType type, PsiExpression expression) { |
| return new CheckedExceptionCompatibilityConstraint(expression, type); |
| } |
| |
| @Override |
| protected void collectReturnTypeVariables(InferenceSession session, |
| PsiExpression psiExpression, |
| PsiType returnType, |
| Set<InferenceVariable> result) { |
| session.collectDependencies(returnType, result, true); |
| } |
| } |