public override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
SyntaxNode root = await context.GetSyntaxRootAsync().ConfigureAwait(false);
if (!TryFindFirstAncestorOrSelf(root, context.Span, out SyntaxNode node, predicate: f => f is AssignmentExpressionSyntax || f.IsKind(SyntaxKind.CoalesceExpression)))
{
return;
}
Document document = context.Document;
Diagnostic diagnostic = context.Diagnostics[0];
if (node is AssignmentExpressionSyntax assignment)
{
var binaryExpression = (BinaryExpressionSyntax)assignment.Right.WalkDownParentheses();
string operatorText = UseCompoundAssignmentAnalyzer.GetCompoundAssignmentOperatorText(binaryExpression);
CodeAction codeAction = CodeAction.Create(
Title,
ct => UseCompoundAssignmentAsync(document, assignment, ct),
GetEquivalenceKey(diagnostic));
context.RegisterCodeFix(codeAction, diagnostic);
}
else
{
var coalesceExpression = (BinaryExpressionSyntax)node;
CodeAction codeAction = CodeAction.Create(
Title,
ct => ConvertLazyInitializationToCompoundAssignmentAsync(document, coalesceExpression, ct),
GetEquivalenceKey(diagnostic));
context.RegisterCodeFix(codeAction, diagnostic);
}
}
public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
SyntaxNode root = await context.GetSyntaxRootAsync().ConfigureAwait(false);
if (!TryFindFirstAncestorOrSelf(root, context.Span, out AssignmentExpressionSyntax assignment))
{
return;
}
Document document = context.Document;
foreach (Diagnostic diagnostic in context.Diagnostics)
{
switch (diagnostic.Id)
{
case DiagnosticIdentifiers.UseCompoundAssignment:
{
var binaryExpression = (BinaryExpressionSyntax)assignment.Right.WalkDownParentheses();
string operatorText = UseCompoundAssignmentAnalyzer.GetCompoundAssignmentOperatorText(binaryExpression);
CodeAction codeAction = CodeAction.Create(
$"Use {operatorText} operator",
cancellationToken => UseCompoundAssignmentRefactoring.RefactorAsync(document, assignment, cancellationToken),
GetEquivalenceKey(diagnostic));
context.RegisterCodeFix(codeAction, diagnostic);
break;
}
case DiagnosticIdentifiers.UseUnaryOperatorInsteadOfAssignment:
{
string operatorText = UseUnaryOperatorInsteadOfAssignmentAnalyzer.GetOperatorText(assignment);
CodeAction codeAction = CodeAction.Create(
$"Use {operatorText} operator",
ct => UseUnaryOperatorInsteadOfAssignmentAsync(document, assignment, ct),
GetEquivalenceKey(diagnostic));
context.RegisterCodeFix(codeAction, diagnostic);
break;
}
case DiagnosticIdentifiers.RemoveRedundantDelegateCreation:
{
CodeAction codeAction = CodeAction.Create(
"Remove redundant delegate creation",
cancellationToken =>
{
return(RemoveRedundantDelegateCreationRefactoring.RefactorAsync(
document,
(ObjectCreationExpressionSyntax)assignment.Right,
cancellationToken));
},
GetEquivalenceKey(diagnostic));
context.RegisterCodeFix(codeAction, diagnostic);
break;
}
case DiagnosticIdentifiers.RemoveRedundantAssignment:
{
CodeAction codeAction = CodeAction.Create(
"Remove redundant assignment",
cancellationToken =>
{
return(RemoveRedundantAssignmentRefactoring.RefactorAsync(
document,
assignment,
cancellationToken));
},
GetEquivalenceKey(diagnostic));
context.RegisterCodeFix(codeAction, diagnostic);
break;
}
}
}
}
