public override Location VisitSingleValueCaseClause([NotNull] ISingleValueCaseClauseOperation operation,
[CanBeNull] object argument)
{
var syntax = (SwitchLabelSyntax)operation.Syntax;
return(syntax.Keyword.GetLocation());
}
private bool ProcessAsField([NotNull] ISingleValueCaseClauseOperation caseClause)
{
if (caseClause.Value is IFieldReferenceOperation enumField)
{
caseClauseValues.Add(enumField.Field);
return(true);
}
return(false);
}
private bool ProcessAsLiteralSyntax([NotNull] SwitchAnalysisContext analysisContext,
[NotNull] ISingleValueCaseClauseOperation caseClause)
{
if (caseClause.Value.Syntax is LiteralExpressionSyntax literalSyntax)
{
if (ProcessLiteralSyntaxAsTrueKeyword(analysisContext, literalSyntax) ||
ProcessLiteralSyntaxAsFalseKeyword(analysisContext, literalSyntax) ||
ProcessLiteralSyntaxAsNullKeyword(literalSyntax))
{
return(true);
}
}
return(false);
}
private bool ProcessAsConversion([NotNull] SwitchAnalysisContext analysisContext,
[NotNull] ISingleValueCaseClauseOperation caseClause)
{
var conversion = caseClause.Value as IConversionOperation;
var memberSyntax = conversion?.Syntax as MemberAccessExpressionSyntax;
IFieldSymbol field = analysisContext.GetFieldOrNull(memberSyntax);
if (field != null)
{
caseClauseValues.Add(field);
return(true);
}
return(false);
}
public override void VisitSingleValueCaseClause(ISingleValueCaseClauseOperation operation)
{
Assert.Equal(OperationKind.CaseClause, operation.Kind);
Assert.Equal(CaseKind.SingleValue, operation.CaseKind);
// It is unexpected to have null operation.Value. The conditional logic is added
// as a work around for https://github.com/dotnet/roslyn/issues/23795 and should be removed
// once the issue is fixed
if (operation.Value == null)
{
Assert.Equal(LanguageNames.VisualBasic, operation.Language);
Assert.Empty(operation.Children);
}
else
{
AssertEx.Equal(new[] { operation.Value }, operation.Children);
}
}
public override IOperation VisitSingleValueCaseClause(ISingleValueCaseClauseOperation operation, object argument)
{
return(new SingleValueCaseClause(operation.Label, Visit(operation.Value), ((Operation)operation).SemanticModel, operation.Syntax, operation.Type, operation.ConstantValue, operation.IsImplicit));
}
public virtual void VisitSingleValueCaseClause(ISingleValueCaseClauseOperation operation)
{
DefaultVisit(operation);
}
public override void VisitSingleValueCaseClause([NotNull] ISingleValueCaseClauseOperation operation)
{
base.VisitSingleValueCaseClause(operation);
}
public override void VisitSingleValueCaseClause(ISingleValueCaseClauseOperation operation)
{
var caseKind = operation.CaseKind;
base.VisitSingleValueCaseClause(operation);
}
public override bool VisitSingleValueCaseClause([NotNull] ISingleValueCaseClauseOperation operation1,
[CanBeNull] IOperation argument)
{
return(argument is ISingleValueCaseClauseOperation operation2 && AreBaseOperationsEqual(operation1, operation2) &&
operation1.CaseKind == operation2.CaseKind);
}
public override void VisitSingleValueCaseClause(ISingleValueCaseClauseOperation operation)
{
VisitCaseClauseOperation(operation);
Assert.Equal(CaseKind.SingleValue, operation.CaseKind);
AssertEx.Equal(new[] { operation.Value }, operation.Children);
}