public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
SyntaxNode root = await context.Document.GetSyntaxRootAsync(context.CancellationToken).ConfigureAwait(false);
IfStatementSyntax ifStatement = root
.FindNode(context.Span, getInnermostNodeForTie: true)?
.FirstAncestorOrSelf <IfStatementSyntax>();
if (ifStatement == null)
{
return;
}
foreach (Diagnostic diagnostic in context.Diagnostics)
{
switch (diagnostic.Id)
{
case DiagnosticIdentifiers.MergeIfStatementWithNestedIfStatement:
{
CodeAction codeAction = CodeAction.Create(
"Merge if with nested if",
cancellationToken =>
{
return(MergeIfStatementWithNestedIfStatementAsync(
context.Document,
ifStatement,
cancellationToken));
},
diagnostic.Id + EquivalenceKeySuffix);
context.RegisterCodeFix(codeAction, diagnostic);
break;
}
case DiagnosticIdentifiers.SimplifyIfElseStatement:
{
CodeAction codeAction = CodeAction.Create(
"Simplify if-else",
cancellationToken =>
{
return(SimplifyIfElseStatementRefactoring.RefactorAsync(
context.Document,
ifStatement,
cancellationToken));
},
diagnostic.Id + EquivalenceKeySuffix);
context.RegisterCodeFix(codeAction, diagnostic);
break;
}
}
}
}
private void AnalyzeIfStatement(SyntaxNodeAnalysisContext context)
{
if (GeneratedCodeAnalyzer?.IsGeneratedCode(context) == true)
{
return;
}
if (context.Node.Parent?.IsKind(SyntaxKind.ElseClause) == true)
{
return;
}
var ifStatement = (IfStatementSyntax)context.Node;
if (ifStatement.Else != null)
{
var result = new IfElseAnalysisResult(ifStatement);
if (result.AddBraces)
{
context.ReportDiagnostic(
DiagnosticDescriptors.AddBracesToIfElse,
ifStatement.GetLocation());
}
if (result.RemoveBraces)
{
context.ReportDiagnostic(
DiagnosticDescriptors.RemoveBracesFromIfElse,
ifStatement.GetLocation());
RemoveBracesFromIfElseFadeOut(context, ifStatement);
}
}
MergeIfStatementWithNestedIfStatementAnalyzer.Analyze(context, ifStatement);
SimplifyIfStatementToReturnStatementAnalyzer.Analyze(context);
if (SimplifyIfElseStatementRefactoring.CanRefactor(ifStatement, context.SemanticModel, context.CancellationToken) &&
!ifStatement.SpanContainsDirectives())
{
context.ReportDiagnostic(
DiagnosticDescriptors.SimplifyIfElseStatement,
ifStatement.GetLocation());
}
}
