/// <remarks>
/// Used to determine whether it would be appropriate to use the binder for the statement (if any).
/// Not used to determine whether the position is syntactically within the statement.
/// </remarks>
internal static bool IsInCatchFilterScope(
int position,
CatchFilterClauseSyntax filterClause
)
{
Debug.Assert(filterClause != null);
return(IsBetweenTokens(
position,
filterClause.OpenParenToken,
filterClause.CloseParenToken
));
}
public override void VisitCatchFilterClause(CatchFilterClauseSyntax node)
{
// No variables can be defined in a filter atm.
// Note - this needs to be updated when declaration expressions are implemented.
}
private BoundExpression BindCatchFilter(CatchFilterClauseSyntax filter, DiagnosticBag diagnostics)
{
BoundExpression boundFilter = this.BindBooleanExpression(filter.FilterExpression, diagnostics);
if (boundFilter.ConstantValue != ConstantValue.NotAvailable)
{
Error(diagnostics, ErrorCode.WRN_FilterIsConstant, filter.FilterExpression);
}
boundFilter = new BoundSequencePointExpression(filter, boundFilter, boundFilter.Type);
return boundFilter;
}
public override void VisitCatchFilterClause(CatchFilterClauseSyntax node)
{
Visit(node.FilterExpression);
}
private IEnumerable<ITypeSymbol> InferTypeInCatchFilterClause(CatchFilterClauseSyntax catchFilterClause, SyntaxToken? previousToken = null)
{
// If we have a position, it has to be after "if ("
if (previousToken.HasValue && previousToken.Value != catchFilterClause.OpenParenToken)
{
return SpecializedCollections.EmptyEnumerable<ITypeSymbol>();
}
return SpecializedCollections.SingletonEnumerable(this.Compilation.GetSpecialType(SpecialType.System_Boolean));
}
/// <remarks>
/// Used to determine whether it would be appropriate to use the binder for the statement (if any).
/// Not used to determine whether the position is syntactically within the statement.
/// </remarks>
internal static bool IsInCatchFilterScope(int position, CatchFilterClauseSyntax filterClause)
{
Debug.Assert(filterClause != null);
return IsBetweenTokens(position, filterClause.OpenParenToken, filterClause.CloseParenToken);
}
/// <summary>
///
/// </summary>
/// <param name="node"></param>
public override sealed void VisitCatchFilterClause(CatchFilterClauseSyntax node)
{
this.OnNodeVisited(node, this.type.IsInstanceOfType(node));
base.VisitCatchFilterClause(node);
}
/// <summary>
///
/// </summary>
/// <param name="node"></param>
public override sealed void VisitCatchFilterClause(CatchFilterClauseSyntax node)
{
this.OnNodeVisited(node);
if (!this.traverseRootOnly) base.VisitCatchFilterClause(node);
}
// // Summary: // Called when the visitor visits a CatchFilterClauseSyntax node. public virtual void VisitCatchFilterClause(CatchFilterClauseSyntax node);
