private static async Task ComputeRefactoringAsync(RefactoringContext context, LocalDeclarationStatementSyntax localDeclaration, ConditionalExpressionSyntax conditionalExpression)
{
if (localDeclaration?.IsParentKind(SyntaxKind.Block, SyntaxKind.SwitchSection) == true)
{
TypeSyntax type = localDeclaration.Declaration.Type;
if (type != null)
{
bool success = true;
if (type.IsVar)
{
SemanticModel semanticModel = await context.GetSemanticModelAsync().ConfigureAwait(false);
ITypeSymbol typeSymbol = semanticModel.GetTypeSymbol(type, context.CancellationToken);
success = typeSymbol?.SupportsExplicitDeclaration() == true;
}
if (success)
{
context.RegisterRefactoring(
"Replace ?: with if-else",
cancellationToken => RefactorAsync(context.Document, localDeclaration, conditionalExpression, cancellationToken));
}
}
}
}
public static void ComputeRefactoring(RefactoringContext context, ConditionalExpressionSyntax expression)
{
SyntaxNode parent = expression.Parent;
if (parent != null && context.Span.IsBetweenSpans(expression))
{
SyntaxKind kind = parent.Kind();
if (kind == SyntaxKind.ReturnStatement)
{
context.RegisterRefactoring(
Title,
cancellationToken => RefactorAsync(context.Document, expression, (ReturnStatementSyntax)parent, cancellationToken));
}
else if (kind == SyntaxKind.YieldReturnStatement)
{
context.RegisterRefactoring(
Title,
cancellationToken => RefactorAsync(context.Document, expression, (YieldStatementSyntax)parent, cancellationToken));
}
else if (kind == SyntaxKind.SimpleAssignmentExpression)
{
parent = parent.Parent;
if (parent?.IsKind(SyntaxKind.ExpressionStatement) == true)
{
context.RegisterRefactoring(
Title,
cancellationToken => RefactorAsync(context.Document, expression, (ExpressionStatementSyntax)parent, cancellationToken));
}
}
else
{
LocalDeclarationStatementSyntax localDeclaration = GetLocalDeclaration(expression);
if (localDeclaration?.IsParentKind(SyntaxKind.Block, SyntaxKind.SwitchSection) == true)
{
context.RegisterRefactoring(
Title,
cancellationToken => RefactorAsync(context.Document, expression, localDeclaration, cancellationToken));
}
}
}
}
