private bool TryComputeRefactoring(
CodeRefactoringContext context, SyntaxNode root, SyntaxNode declaration,
OptionSet optionSet, UseExpressionBodyHelper helper)
{
var document = context.Document;
var succeeded = false;
if (helper.CanOfferUseExpressionBody(optionSet, declaration, forAnalyzer: false))
{
context.RegisterRefactoring(new MyCodeAction(
helper.UseExpressionBodyTitle.ToString(),
c => UpdateDocumentAsync(
document, root, declaration, helper,
useExpressionBody: true, cancellationToken: c)),
declaration.Span);
succeeded = true;
}
var(canOffer, _) = helper.CanOfferUseBlockBody(optionSet, declaration, forAnalyzer: false);
if (canOffer)
{
context.RegisterRefactoring(
new MyCodeAction(
helper.UseBlockBodyTitle.ToString(),
c => UpdateDocumentAsync(
document, root, declaration, helper,
useExpressionBody: false, cancellationToken: c)),
declaration.Span);
succeeded = true;
}
return(succeeded);
}
private Diagnostic AnalyzeSyntax(
OptionSet optionSet, SyntaxNode declaration, UseExpressionBodyHelper helper)
{
var preferExpressionBodiedOption = optionSet.GetOption(helper.Option);
var severity = preferExpressionBodiedOption.Notification.Value;
if (helper.CanOfferUseExpressionBody(optionSet, declaration, forAnalyzer: true))
{
var location = severity == DiagnosticSeverity.Hidden
? declaration.GetLocation()
: helper.GetDiagnosticLocation(declaration);
var additionalLocations = ImmutableArray.Create(declaration.GetLocation());
var properties = ImmutableDictionary <string, string> .Empty.Add(nameof(UseExpressionBody), "");
return(Diagnostic.Create(
CreateDescriptorWithId(helper.DiagnosticId, helper.UseExpressionBodyTitle, helper.UseExpressionBodyTitle, severity, GetCustomTags(severity)),
location, additionalLocations: additionalLocations, properties: properties));
}
var(canOffer, fixesError) = helper.CanOfferUseBlockBody(optionSet, declaration, forAnalyzer: true);
if (canOffer)
{
// They have an expression body. Create a diagnostic to convert it to a block
// if they don't want expression bodies for this member.
var location = severity == DiagnosticSeverity.Hidden
? declaration.GetLocation()
: helper.GetExpressionBody(declaration).GetLocation();
var properties = ImmutableDictionary <string, string> .Empty;
if (fixesError)
{
properties = properties.Add(FixesError, "");
}
var additionalLocations = ImmutableArray.Create(declaration.GetLocation());
return(Diagnostic.Create(
CreateDescriptorWithId(helper.DiagnosticId, helper.UseBlockBodyTitle, helper.UseBlockBodyTitle, severity, GetCustomTags(severity)),
location, additionalLocations: additionalLocations, properties: properties));
}
return(null);
}
private static Diagnostic?AnalyzeSyntax(
OptionSet optionSet, SyntaxNode declaration, UseExpressionBodyHelper helper)
{
var preferExpressionBodiedOption = optionSet.GetOption(helper.Option);
var severity = preferExpressionBodiedOption.Notification.Severity;
if (helper.CanOfferUseExpressionBody(optionSet, declaration, forAnalyzer: true))
{
var location = severity.WithDefaultSeverity(DiagnosticSeverity.Hidden) == ReportDiagnostic.Hidden
? declaration.GetLocation()
: helper.GetDiagnosticLocation(declaration);
var additionalLocations = ImmutableArray.Create(declaration.GetLocation());
var properties = ImmutableDictionary <string, string?> .Empty.Add(nameof(UseExpressionBody), "");
return(DiagnosticHelper.Create(
CreateDescriptorWithId(helper.DiagnosticId, helper.EnforceOnBuild, helper.UseExpressionBodyTitle, helper.UseExpressionBodyTitle),
location, severity, additionalLocations: additionalLocations, properties: properties));
}
if (helper.CanOfferUseBlockBody(optionSet, declaration, forAnalyzer: true, out var fixesError, out var expressionBody))
{
// They have an expression body. Create a diagnostic to convert it to a block
// if they don't want expression bodies for this member.
var location = severity.WithDefaultSeverity(DiagnosticSeverity.Hidden) == ReportDiagnostic.Hidden
? declaration.GetLocation()
: expressionBody.GetLocation();
var properties = ImmutableDictionary <string, string?> .Empty;
if (fixesError)
{
properties = properties.Add(FixesError, "");
}
var additionalLocations = ImmutableArray.Create(declaration.GetLocation());
return(DiagnosticHelper.Create(
CreateDescriptorWithId(helper.DiagnosticId, helper.EnforceOnBuild, helper.UseBlockBodyTitle, helper.UseBlockBodyTitle),
location, severity, additionalLocations: additionalLocations, properties: properties));
}
return(null);
}