GrOperatorExpressionImpl.java

/*
 * Copyright 2000-2016 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;

import com.intellij.lang.ASTNode;
import com.intellij.openapi.util.TextRange;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiType;
import com.intellij.psi.tree.IElementType;
import com.intellij.util.ArrayUtil;
import com.intellij.util.IncorrectOperationException;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrOperatorExpression;
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.GrExpressionImpl;
import org.jetbrains.plugins.groovy.lang.psi.impl.statements.expressions.binaryCalculators.GrBinaryExpressionTypeCalculators;

abstract public class GrOperatorExpressionImpl extends GrExpressionImpl implements GrOperatorExpression {

  protected GrOperatorExpressionImpl(@NotNull ASTNode node) {
    super(node);
  }

  @Nullable
  @Override
  public PsiType getType() {
    return TypeInferenceHelper.getCurrentContext().getExpressionType(this, GrBinaryExpressionTypeCalculators::computeType);
  }

  @Override
  @NotNull
  public IElementType getOperationTokenType() {
    return getOperationToken().getNode().getElementType();
  }

  @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));
  }

  @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;
  }

  @NotNull
  @Override
  public String getCanonicalText() {
    return getText();
  }
}