/*
* Copyright 2013-2017 consulo.io
*
* 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 consulo.csharp.ide.highlight.check.impl;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import consulo.annotations.RequiredReadAction;
import consulo.csharp.ide.highlight.CSharpHighlightContext;
import consulo.csharp.ide.highlight.check.CompilerCheck;
import consulo.csharp.lang.psi.CSharpModifier;
import consulo.csharp.lang.psi.CSharpReferenceExpression;
import consulo.csharp.lang.psi.impl.source.CSharpIndexAccessExpressionImpl;
import consulo.csharp.lang.psi.impl.source.CSharpOutRefWrapExpressionImpl;
import consulo.csharp.module.extension.CSharpLanguageVersion;
import consulo.dotnet.psi.DotNetExpression;
import consulo.dotnet.psi.DotNetVariable;
import com.intellij.psi.PsiElement;
/**
* @author VISTALL
* @since 13-May-16
*
* @see CS0206
*/
public class CS1510 extends CompilerCheck<CSharpOutRefWrapExpressionImpl>
{
@RequiredReadAction
@Nullable
@Override
public HighlightInfoFactory checkImpl(@NotNull CSharpLanguageVersion languageVersion, @NotNull CSharpHighlightContext highlightContext, @NotNull CSharpOutRefWrapExpressionImpl element)
{
DotNetExpression innerExpression = element.getInnerExpression();
if(innerExpression == null || innerExpression instanceof CSharpIndexAccessExpressionImpl) // ignore index access see CS0206
{
return null;
}
if(!(innerExpression instanceof CSharpReferenceExpression))
{
return newBuilder(innerExpression);
}
PsiElement psiElement = ((CSharpReferenceExpression) innerExpression).resolve();
// reference already highlighted by error
if(psiElement == null)
{
return null;
}
if(!(psiElement instanceof DotNetVariable) || ((DotNetVariable) psiElement).isConstant() || ((DotNetVariable) psiElement).hasModifier(CSharpModifier.READONLY))
{
return newBuilder(innerExpression);
}
return null;
}
}