/// <summary>
/// Adds a diagnostic indicating that a directive was encountered at an invalid position
/// to the specified collection of diagnostics.
/// </summary>
/// <param name="collection">The collection to which to add the diagnostic.</param>
/// <param name="node">The syntax node which is associated with the diagnostic.</param>
internal static void ReportDirectiveMustBeFirstNonWhiteSpaceOnLine(ref ICollection<DiagnosticInfo> collection,
UvssDirectiveSyntax node)
{
Contract.Require(node, nameof(node));
var span = new TextSpan(0, node.Width);
var diagnostic = new DiagnosticInfo(node, DiagnosticID.DirectiveMustBeFirstNonWhiteSpaceOnLine,
DiagnosticSeverity.Error, span, $"Directive must appear as the first non-whitespace character on a line");
Report(ref collection, diagnostic);
}
/// <summary>
/// Adds a diagnostic indicating that a directive is not recognized
/// to the specified collection of diagnostics.
/// </summary>
/// <param name="collection">The collection to which to add the diagnostic.</param>
/// <param name="node">The syntax node which is associated with the diagnostic.</param>
internal static void ReportUnknownDirective(ref ICollection<DiagnosticInfo> collection,
UvssDirectiveSyntax node)
{
Contract.Require(node, nameof(node));
var span = new TextSpan(0, node.Width);
var diagnostic = new DiagnosticInfo(node, DiagnosticID.UnknownDirective,
DiagnosticSeverity.Error, span, $"Unrecognized directive");
Report(ref collection, diagnostic);
}
/// <summary>
/// Adds a diagnostic indicating that a directive was encountered at an invalid position
/// to the specified collection of diagnostics.
/// </summary>
/// <param name="collection">The collection to which to add the diagnostic.</param>
/// <param name="node">The syntax node which is associated with the diagnostic.</param>
internal static void ReportDirectiveAtInvalidPosition(ref ICollection<DiagnosticInfo> collection,
UvssDirectiveSyntax node)
{
Contract.Require(node, nameof(node));
var span = new TextSpan(0, node.Width);
var diagnostic = new DiagnosticInfo(node, DiagnosticID.DirectiveAtInvalidPosition,
DiagnosticSeverity.Error, span, $"Directives are only valid at the start of a document");
Report(ref collection, diagnostic);
}