public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
SyntaxNode root = await context.GetSyntaxRootAsync().ConfigureAwait(false);
if (!TryFindFirstAncestorOrSelf(root, context.Span, out AssignmentExpressionSyntax assignment))
{
return;
}
foreach (Diagnostic diagnostic in context.Diagnostics)
{
switch (diagnostic.Id)
{
case DiagnosticIdentifiers.UseCompoundAssignment:
{
var binaryExpression = (BinaryExpressionSyntax)assignment.Right;
string operatorText = UseCompoundAssignmentRefactoring.GetCompoundOperatorText(binaryExpression);
CodeAction codeAction = CodeAction.Create(
$"Use {operatorText} operator",
cancellationToken => UseCompoundAssignmentRefactoring.RefactorAsync(context.Document, assignment, cancellationToken),
GetEquivalenceKey(diagnostic));
context.RegisterCodeFix(codeAction, diagnostic);
break;
}
case DiagnosticIdentifiers.UsePostfixUnaryOperatorInsteadOfAssignment:
{
string operatorText = UsePostfixUnaryOperatorInsteadOfAssignmentRefactoring.GetOperatorText(assignment);
CodeAction codeAction = CodeAction.Create(
$"Use {operatorText} operator",
c => UsePostfixUnaryOperatorInsteadOfAssignmentRefactoring.RefactorAsync(context.Document, assignment, c),
GetEquivalenceKey(diagnostic));
context.RegisterCodeFix(codeAction, diagnostic);
break;
}
case DiagnosticIdentifiers.RemoveRedundantDelegateCreation:
{
CodeAction codeAction = CodeAction.Create(
"Remove redundant delegate creation",
cancellationToken =>
{
return(RemoveRedundantDelegateCreationRefactoring.RefactorAsync(
context.Document,
(ObjectCreationExpressionSyntax)assignment.Right,
cancellationToken));
},
GetEquivalenceKey(diagnostic));
context.RegisterCodeFix(codeAction, diagnostic);
break;
}
}
}
}
private void AnalyzeSimpleAssignment(SyntaxNodeAnalysisContext context)
{
var assignment = (AssignmentExpressionSyntax)context.Node;
if (UseCompoundAssignmentRefactoring.CanRefactor(assignment))
{
var binaryExpression = (BinaryExpressionSyntax)assignment.Right;
context.ReportDiagnostic(DiagnosticDescriptors.UseCompoundAssignment, assignment, UseCompoundAssignmentRefactoring.GetCompoundOperatorText(binaryExpression));
context.ReportNode(DiagnosticDescriptors.UseCompoundAssignmentFadeOut, binaryExpression.Left);
}
}
public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
SyntaxNode root = await context.Document.GetSyntaxRootAsync(context.CancellationToken).ConfigureAwait(false);
AssignmentExpressionSyntax assignment = root
.FindNode(context.Span, getInnermostNodeForTie: true)?
.FirstAncestorOrSelf <AssignmentExpressionSyntax>();
if (assignment == null)
{
return;
}
foreach (Diagnostic diagnostic in context.Diagnostics)
{
switch (diagnostic.Id)
{
case DiagnosticIdentifiers.UseCompoundAssignment:
{
var binaryExpression = (BinaryExpressionSyntax)assignment.Right;
string operatorText = UseCompoundAssignmentRefactoring.GetCompoundOperatorText(binaryExpression);
CodeAction codeAction = CodeAction.Create(
$"Use {operatorText} operator",
cancellationToken => UseCompoundAssignmentRefactoring.RefactorAsync(context.Document, assignment, cancellationToken),
diagnostic.Id + EquivalenceKeySuffix);
context.RegisterCodeFix(codeAction, diagnostic);
break;
}
case DiagnosticIdentifiers.UsePostfixUnaryOperatorInsteadOfAssignment:
{
SyntaxKind kind = UsePostfixUnaryOperatorInsteadOfAssignmentRefactoring.GetPostfixUnaryOperatorKind(assignment);
string operatorText = UsePostfixUnaryOperatorInsteadOfAssignmentRefactoring.GetOperatorText(kind);
CodeAction codeAction = CodeAction.Create(
$"Use {operatorText} operator",
c => UsePostfixUnaryOperatorInsteadOfAssignmentRefactoring.RefactorAsync(context.Document, assignment, kind, c),
diagnostic.Id + EquivalenceKeySuffix);
context.RegisterCodeFix(codeAction, diagnostic);
break;
}
case DiagnosticIdentifiers.RemoveRedundantDelegateCreation:
{
CodeAction codeAction = CodeAction.Create(
"Remove redundant delegate creation",
cancellationToken =>
{
return(RemoveRedundantDelegateCreationRefactoring.RefactorAsync(
context.Document,
(ObjectCreationExpressionSyntax)assignment.Right,
cancellationToken));
},
diagnostic.Id + EquivalenceKeySuffix);
context.RegisterCodeFix(codeAction, diagnostic);
break;
}
}
}
}
