| /* |
| * 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 com.intellij.psi.controlFlow; |
| |
| import com.intellij.psi.*; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| public class LocalsControlFlowPolicy implements ControlFlowPolicy { |
| private final PsiElement myCodeFragment; |
| |
| public LocalsControlFlowPolicy(@NotNull PsiElement codeFragment) { |
| myCodeFragment = codeFragment; |
| } |
| |
| @Override |
| public PsiVariable getUsedVariable(@NotNull PsiReferenceExpression refExpr) { |
| if (refExpr.isQualified()) return null; |
| |
| PsiElement refElement = refExpr.resolve(); |
| return refElement instanceof PsiLocalVariable || refElement instanceof PsiParameter ? checkCodeFragment(refElement) : null; |
| } |
| |
| @Nullable |
| private PsiVariable checkCodeFragment(@NotNull PsiElement refElement) { |
| PsiElement codeFragment; |
| if (refElement instanceof PsiParameter) { |
| final PsiElement declarationScope = ((PsiParameter)refElement).getDeclarationScope(); |
| if (declarationScope instanceof PsiMethod) { |
| codeFragment = ((PsiMethod)declarationScope).getBody(); |
| } |
| else if (declarationScope instanceof PsiLambdaExpression) { |
| codeFragment = ((PsiLambdaExpression)declarationScope).getBody(); |
| } |
| else { |
| codeFragment = ControlFlowUtil.findCodeFragment(refElement); |
| } |
| } |
| else { |
| codeFragment = ControlFlowUtil.findCodeFragment(refElement); |
| } |
| if (codeFragment == null) return null; |
| if (myCodeFragment.getContainingFile() == codeFragment.getContainingFile() && // in order for jsp includes to work |
| !myCodeFragment.equals(codeFragment) && !(myCodeFragment.getParent() instanceof PsiLambdaExpression)) { |
| return null; |
| } |
| return (PsiVariable)refElement; |
| } |
| |
| @Override |
| public boolean isParameterAccepted(@NotNull PsiParameter psiParameter) { |
| return checkCodeFragment(psiParameter) != null; |
| } |
| |
| @Override |
| public boolean isLocalVariableAccepted(@NotNull PsiLocalVariable psiVariable) { |
| return checkCodeFragment(psiVariable) != null; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (o == null || getClass() != o.getClass()) return false; |
| |
| LocalsControlFlowPolicy policy = (LocalsControlFlowPolicy)o; |
| |
| return myCodeFragment.equals(policy.myCodeFragment); |
| } |
| |
| @Override |
| public int hashCode() { |
| return myCodeFragment.hashCode(); |
| } |
| } |