| /* |
| * 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; |
| |
| import com.intellij.lang.ASTNode; |
| import com.intellij.openapi.util.TextRange; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiReference; |
| import com.intellij.psi.PsiType; |
| import com.intellij.psi.impl.source.resolve.ResolveCache; |
| import com.intellij.psi.tree.IElementType; |
| import com.intellij.util.ArrayUtil; |
| import com.intellij.util.Function; |
| import com.intellij.util.IncorrectOperationException; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| import org.jetbrains.plugins.groovy.lang.lexer.GroovyTokenTypes; |
| import org.jetbrains.plugins.groovy.lang.lexer.TokenSets; |
| import org.jetbrains.plugins.groovy.lang.psi.GroovyElementVisitor; |
| import org.jetbrains.plugins.groovy.lang.psi.api.GroovyResolveResult; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrAssignmentExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.path.GrIndexProperty; |
| import org.jetbrains.plugins.groovy.lang.psi.dataFlow.types.TypeInferenceHelper; |
| import org.jetbrains.plugins.groovy.lang.psi.impl.PsiImplUtil; |
| import org.jetbrains.plugins.groovy.lang.psi.impl.statements.expressions.binaryCalculators.GrBinaryExpressionTypeCalculators; |
| import org.jetbrains.plugins.groovy.lang.psi.impl.statements.expressions.binaryCalculators.GrBinaryExpressionUtil; |
| import org.jetbrains.plugins.groovy.lang.psi.impl.statements.expressions.binaryCalculators.GrBinaryFacade; |
| |
| /** |
| * @author ilyas |
| */ |
| public class GrAssignmentExpressionImpl extends GrExpressionImpl implements GrAssignmentExpression { |
| |
| private GrBinaryFacade getFacade() { |
| return myFacade; |
| } |
| |
| public GrAssignmentExpressionImpl(@NotNull ASTNode node) { |
| super(node); |
| } |
| |
| public String toString() { |
| return "Assignment expression"; |
| } |
| |
| @Override |
| @NotNull |
| public GrExpression getLValue() { |
| return findExpressionChild(this); |
| } |
| |
| @Override |
| @Nullable |
| public GrExpression getRValue() { |
| GrExpression[] exprs = findChildrenByClass(GrExpression.class); |
| if (exprs.length > 1) { |
| return exprs[1]; |
| } |
| return null; |
| } |
| |
| @Override |
| @NotNull |
| public IElementType getOperationTokenType() { |
| return getOperationToken().getNode().getElementType(); |
| } |
| |
| @Override |
| @NotNull |
| public PsiElement getOperationToken() { |
| return findNotNullChildByType(TokenSets.ASSIGN_OP_SET); |
| } |
| |
| @Override |
| public PsiType getType() { |
| return TypeInferenceHelper.getCurrentContext().getExpressionType(this, TYPE_CALCULATOR); |
| } |
| |
| @Override |
| public void accept(GroovyElementVisitor visitor) { |
| visitor.visitAssignmentExpression(this); |
| } |
| |
| @NotNull |
| @Override |
| public GroovyResolveResult[] multiResolve(boolean incompleteCode) { |
| return TypeInferenceHelper.getCurrentContext().multiResolve(this, incompleteCode, RESOLVER); |
| } |
| |
| @Override |
| public PsiElement getElement() { |
| return this; |
| } |
| |
| @Override |
| public TextRange getRangeInElement() { |
| final PsiElement token = getOperationToken(); |
| final int offset = token.getStartOffsetInParent(); |
| return new TextRange(offset, offset + token.getTextLength()); |
| } |
| |
| @Override |
| public PsiElement resolve() { |
| return PsiImplUtil.extractUniqueElement(multiResolve(false)); |
| } |
| |
| @NotNull |
| @Override |
| public String getCanonicalText() { |
| return getText(); |
| } |
| |
| @Override |
| public PsiElement handleElementRename(String newElementName) throws IncorrectOperationException { |
| throw new IncorrectOperationException("assignment expression cannot be renamed"); |
| } |
| |
| @Override |
| public PsiElement bindToElement(@NotNull PsiElement element) throws IncorrectOperationException { |
| throw new IncorrectOperationException("assignment expression cannot be bound to anything"); |
| } |
| |
| @Override |
| public boolean isReferenceTo(PsiElement element) { |
| return getManager().areElementsEquivalent(resolve(), element); |
| } |
| |
| @NotNull |
| @Override |
| public Object[] getVariants() { |
| return ArrayUtil.EMPTY_OBJECT_ARRAY; |
| } |
| |
| @Override |
| public boolean isSoft() { |
| return false; |
| } |
| |
| @Override |
| public PsiReference getReference() { |
| final IElementType operationToken = getOperationTokenType(); |
| if (operationToken == GroovyTokenTypes.mASSIGN) return null; |
| |
| return this; |
| } |
| |
| private final GrBinaryFacade myFacade = new GrBinaryFacade() { |
| @NotNull |
| @Override |
| public GrExpression getLeftOperand() { |
| return getLValue(); |
| } |
| |
| @Nullable |
| @Override |
| public GrExpression getRightOperand() { |
| return getRValue(); |
| } |
| |
| @NotNull |
| @Override |
| public IElementType getOperationTokenType() { |
| return GrAssignmentExpressionImpl.this.getOperationTokenType(); |
| } |
| |
| @NotNull |
| @Override |
| public PsiElement getOperationToken() { |
| return GrAssignmentExpressionImpl.this.getOperationToken(); |
| } |
| |
| @NotNull |
| @Override |
| public GroovyResolveResult[] multiResolve(boolean incompleteCode) { |
| return GrAssignmentExpressionImpl.this.multiResolve(false); |
| } |
| |
| @NotNull |
| @Override |
| public GrExpression getPsiElement() { |
| return GrAssignmentExpressionImpl.this; |
| } |
| }; |
| |
| |
| private static final ResolveCache.PolyVariantResolver<GrAssignmentExpressionImpl> RESOLVER = new ResolveCache.PolyVariantResolver<GrAssignmentExpressionImpl>() { |
| @NotNull |
| @Override |
| public GroovyResolveResult[] resolve(@NotNull GrAssignmentExpressionImpl assignmentExpression, boolean incompleteCode) { |
| final IElementType opType = assignmentExpression.getOperationTokenType(); |
| if (opType == GroovyTokenTypes.mASSIGN) return GroovyResolveResult.EMPTY_ARRAY; |
| |
| final GrExpression lValue = assignmentExpression.getLValue(); |
| final PsiType lType; |
| if (lValue instanceof GrIndexProperty) { |
| /* |
| now we have something like map[i] += 2. It equals to map.putAt(i, map.getAt(i).plus(2)) |
| by default map[i] resolves to putAt, but we need getAt(). so this hack is for it =) |
| */ |
| lType = ((GrIndexProperty)lValue).getGetterType(); |
| } |
| else { |
| lType = lValue.getType(); |
| } |
| if (lType == null) return GroovyResolveResult.EMPTY_ARRAY; |
| |
| PsiType rType = GrBinaryExpressionUtil.getRightType(assignmentExpression.getFacade()); |
| |
| final IElementType operatorToken = TokenSets.ASSIGNMENTS_TO_OPERATORS.get(opType); |
| return TypesUtil.getOverloadedOperatorCandidates(lType, operatorToken, lValue, new PsiType[]{rType}); |
| } |
| }; |
| |
| private static final Function<GrAssignmentExpressionImpl, PsiType> TYPE_CALCULATOR = new Function<GrAssignmentExpressionImpl, PsiType>() { |
| @Override |
| public PsiType fun(GrAssignmentExpressionImpl expression) { |
| final Function<GrBinaryFacade, PsiType> calculator = GrBinaryExpressionTypeCalculators.getTypeCalculator(expression.getFacade()); |
| return calculator.fun(expression.getFacade()); |
| } |
| }; |
| } |