/*
* 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.lang.psi.impl.source;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import consulo.annotations.RequiredReadAction;
import consulo.csharp.lang.psi.CSharpElementVisitor;
import consulo.csharp.lang.psi.impl.CSharpNullableTypeUtil;
import consulo.dotnet.psi.DotNetExpression;
import consulo.dotnet.resolve.DotNetTypeRef;
import com.intellij.lang.ASTNode;
import com.intellij.psi.PsiElement;
/**
* @author VISTALL
* @since 04.01.14.
*/
public class CSharpNullCoalescingExpressionImpl extends CSharpExpressionImpl implements DotNetExpression
{
public CSharpNullCoalescingExpressionImpl(@NotNull ASTNode node)
{
super(node);
}
@Override
public void accept(@NotNull CSharpElementVisitor visitor)
{
visitor.visitNullCoalescingExpression(this);
}
@NotNull
@RequiredReadAction
public DotNetExpression getCondition()
{
return (DotNetExpression) getFirstChild();
}
@Nullable
@RequiredReadAction
public DotNetExpression getResult()
{
PsiElement[] children = getChildren();
for(PsiElement child : children)
{
if(child == getCondition())
{
continue;
}
if(child instanceof DotNetExpression)
{
return (DotNetExpression) child;
}
}
return null;
}
@NotNull
@Override
@RequiredReadAction
public DotNetTypeRef toTypeRefImpl(boolean resolveFromParent)
{
DotNetExpression condition = getCondition();
DotNetTypeRef typeRef = condition.toTypeRef(resolveFromParent);
return CSharpNullableTypeUtil.unbox(typeRef);
}
}