/// <summary>
/// Returns 'true' if a multi-line conditional was created, and thus should be
/// formatted specially.
/// </summary>
protected override async Task FixOneAsync(
Document document, Diagnostic diagnostic,
SyntaxEditor editor, CancellationToken cancellationToken)
{
var syntaxFacts = document.GetLanguageService <ISyntaxFactsService>();
var ifStatement = diagnostic.AdditionalLocations[0].FindNode(cancellationToken);
var semanticModel = await document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
var ifOperation = (IConditionalOperation)semanticModel.GetOperation(ifStatement);
if (!UseConditionalExpressionForAssignmentHelpers.TryMatchPattern(
syntaxFacts, ifOperation,
out var trueAssignment, out var falseAssignment))
{
return;
}
var conditionalExpression = await CreateConditionalExpressionAsync(
document, ifOperation, trueAssignment.Parent, falseAssignment.Parent,
trueAssignment.Value, falseAssignment.Value,
trueAssignment.IsRef, cancellationToken).ConfigureAwait(false);
// See if we're assigning to a variable declared directly above the if statement. If so,
// try to inline the conditional directly into the initializer for that variable.
if (!TryConvertWhenAssignmentToLocalDeclaredImmediateAbove(
syntaxFacts, editor, ifOperation,
trueAssignment, falseAssignment, conditionalExpression))
{
// If not, just replace the if-statement with a single assignment of the new
// conditional.
ConvertOnlyIfToConditionalExpression(
editor, ifOperation, trueAssignment, falseAssignment, conditionalExpression);
}
}
protected override bool TryMatchPattern(IConditionalOperation ifOperation)
=> UseConditionalExpressionForAssignmentHelpers.TryMatchPattern(
GetSyntaxFactsService(), ifOperation, out _, out _);
