| /* |
| * 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. |
| */ |
| package com.intellij.psi.impl.source.tree.java; |
| |
| import com.intellij.lang.ASTNode; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.psi.*; |
| import com.intellij.psi.impl.source.resolve.JavaResolveCache; |
| import com.intellij.psi.impl.source.tree.ChildRole; |
| import com.intellij.psi.impl.source.tree.ElementType; |
| import com.intellij.psi.impl.source.tree.JavaElementType; |
| import com.intellij.psi.tree.ChildRoleBase; |
| import com.intellij.psi.tree.IElementType; |
| import com.intellij.psi.tree.TokenSet; |
| import com.intellij.psi.util.TypeConversionUtil; |
| import com.intellij.util.Function; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class PsiBinaryExpressionImpl extends ExpressionPsiElement implements PsiBinaryExpression { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.psi.impl.source.tree.java.PsiBinaryExpressionImpl"); |
| |
| /** used via reflection in {@link com.intellij.psi.impl.source.tree.JavaElementType.JavaCompositeElementType#JavaCompositeElementType(java.lang.String, java.lang.Class)} */ |
| @SuppressWarnings("UnusedDeclaration") |
| public PsiBinaryExpressionImpl() { |
| this(JavaElementType.BINARY_EXPRESSION); |
| } |
| protected PsiBinaryExpressionImpl(@NotNull IElementType elementType) { |
| super(elementType); |
| } |
| |
| @Override |
| @NotNull |
| public PsiExpression getLOperand() { |
| return (PsiExpression)findChildByRoleAsPsiElement(ChildRole.LOPERAND); |
| } |
| |
| @Override |
| public PsiExpression getROperand() { |
| return (PsiExpression)findChildByRoleAsPsiElement(ChildRole.ROPERAND); |
| } |
| |
| @Override |
| @NotNull |
| public PsiJavaToken getOperationSign() { |
| return (PsiJavaToken)findChildByRoleAsPsiElement(ChildRole.OPERATION_SIGN); |
| } |
| |
| @Override |
| @NotNull |
| public IElementType getOperationTokenType() { |
| return getOperationSign().getTokenType(); |
| } |
| |
| @Override |
| public PsiJavaToken getTokenBeforeOperand(@NotNull PsiExpression operand) { |
| if (operand != getROperand()) return null; |
| return getOperationSign(); |
| } |
| |
| private static PsiType doGetType(PsiBinaryExpressionImpl param) { |
| PsiExpression lOperand = param.getLOperand(); |
| PsiExpression rOperand = param.getROperand(); |
| if (rOperand == null) return null; |
| PsiType rType = rOperand.getType(); |
| IElementType sign = param.getOperationTokenType(); |
| // optimization: if we can calculate type based on right type only |
| PsiType type = TypeConversionUtil.calcTypeForBinaryExpression(null, rType, sign, false); |
| if (type != TypeConversionUtil.NULL_TYPE) return type; |
| |
| PsiType lType = lOperand.getType(); |
| return TypeConversionUtil.calcTypeForBinaryExpression(lType, rType, sign, true); |
| } |
| |
| private static final Function<PsiBinaryExpressionImpl,PsiType> MY_TYPE_EVALUATOR = new Function<PsiBinaryExpressionImpl, PsiType>() { |
| @Override |
| public PsiType fun(PsiBinaryExpressionImpl expression) { |
| return doGetType(expression); |
| } |
| }; |
| @Override |
| public PsiType getType() { |
| return JavaResolveCache.getInstance(getProject()).getType(this, MY_TYPE_EVALUATOR); |
| } |
| |
| @Override |
| public ASTNode findChildByRole(int role) { |
| LOG.assertTrue(ChildRole.isUnique(role)); |
| switch (role) { |
| default: |
| return null; |
| |
| case ChildRole.LOPERAND: |
| return getFirstChildNode(); |
| |
| case ChildRole.ROPERAND: |
| return ElementType.EXPRESSION_BIT_SET.contains(getLastChildNode().getElementType()) ? getLastChildNode() : null; |
| |
| case ChildRole.OPERATION_SIGN: |
| return findChildByType(OUR_OPERATIONS_BIT_SET); |
| } |
| } |
| |
| @Override |
| public int getChildRole(ASTNode child) { |
| LOG.assertTrue(child.getTreeParent() == this); |
| if (ElementType.EXPRESSION_BIT_SET.contains(child.getElementType())) { |
| if (child == getFirstChildNode()) return ChildRole.LOPERAND; |
| if (child == getLastChildNode()) return ChildRole.ROPERAND; |
| return ChildRoleBase.NONE; |
| } |
| if (OUR_OPERATIONS_BIT_SET.contains(child.getElementType())) { |
| return ChildRole.OPERATION_SIGN; |
| } |
| return ChildRoleBase.NONE; |
| } |
| |
| private static final TokenSet OUR_OPERATIONS_BIT_SET = |
| TokenSet.create(JavaTokenType.OROR, JavaTokenType.ANDAND, JavaTokenType.OR, JavaTokenType.XOR, JavaTokenType.AND, JavaTokenType.EQEQ, |
| JavaTokenType.NE, JavaTokenType.LT, JavaTokenType.GT, JavaTokenType.LE, JavaTokenType.GE, JavaTokenType.LTLT, |
| JavaTokenType.GTGT, JavaTokenType.GTGTGT, JavaTokenType.PLUS, JavaTokenType.MINUS, JavaTokenType.ASTERISK, JavaTokenType.DIV, |
| JavaTokenType.PERC); |
| |
| @Override |
| public void accept(@NotNull PsiElementVisitor visitor) { |
| if (visitor instanceof JavaElementVisitor) { |
| ((JavaElementVisitor)visitor).visitBinaryExpression(this); |
| } |
| else { |
| visitor.visitElement(this); |
| } |
| } |
| |
| public String toString() { |
| return "PsiBinaryExpression:" + getText(); |
| } |
| |
| @NotNull |
| @Override |
| public PsiExpression[] getOperands() { |
| PsiExpression rOperand = getROperand(); |
| return rOperand == null ? new PsiExpression[]{getLOperand()} : new PsiExpression[]{getLOperand(), rOperand}; |
| } |
| } |
| |