| /* |
| * Copyright 2000-2009 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. |
| */ |
| |
| /* |
| * Created by IntelliJ IDEA. |
| * User: max |
| * Date: Feb 7, 2002 |
| * Time: 1:11:08 PM |
| * To change template for new class use |
| * Code Style | Class Templates options (Tools | IDE Options). |
| */ |
| package com.intellij.codeInspection.dataFlow.instructions; |
| |
| import com.intellij.codeInspection.dataFlow.*; |
| import com.intellij.codeInspection.dataFlow.value.DfaValue; |
| import com.intellij.codeInspection.dataFlow.value.DfaValueFactory; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.*; |
| import com.intellij.psi.search.GlobalSearchScope; |
| import com.intellij.psi.tree.IElementType; |
| import com.intellij.psi.tree.TokenSet; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import static com.intellij.psi.JavaTokenType.*; |
| |
| public class BinopInstruction extends BranchingInstruction { |
| private static final TokenSet ourSignificantOperations = TokenSet.create(EQEQ, NE, LT, GT, LE, GE, INSTANCEOF_KEYWORD, PLUS); |
| private final IElementType myOperationSign; |
| private final Project myProject; |
| |
| public BinopInstruction(IElementType opSign, @Nullable PsiElement psiAnchor, @NotNull Project project) { |
| super(psiAnchor); |
| myProject = project; |
| myOperationSign = ourSignificantOperations.contains(opSign) ? opSign : null; |
| } |
| |
| @Override |
| public DfaInstructionState[] accept(DataFlowRunner runner, DfaMemoryState stateBefore, InstructionVisitor visitor) { |
| return visitor.visitBinop(this, runner, stateBefore); |
| } |
| |
| public DfaValue getNonNullStringValue(final DfaValueFactory factory) { |
| PsiElement anchor = getPsiAnchor(); |
| Project project = myProject; |
| PsiClassType string = PsiType.getJavaLangString(PsiManager.getInstance(project), anchor == null ? GlobalSearchScope.allScope(project) : anchor.getResolveScope()); |
| return factory.createTypeValue(string, Nullness.NOT_NULL); |
| } |
| |
| public String toString() { |
| return "BINOP " + myOperationSign; |
| } |
| |
| public IElementType getOperationSign() { |
| return myOperationSign; |
| } |
| } |