private void VisitDirectives(IHasDirectives hasDirectives)
{
foreach (DirectiveType type in hasDirectives.Directives.Select(t => t.Type))
{
Visit(type);
}
}
public static string DeprecationReason(this IHasDirectives syntaxNode)
{
DirectiveNode directive = syntaxNode.Directives
.FirstOrDefault(t => t.Name.Value == _deprecated);
if (directive == null)
{
return(null);
}
ArgumentNode argument = directive.Arguments
.FirstOrDefault(t => t.Name.Value == _deprecationReason);
if (argument == null)
{
return(null);
}
if (argument.Value is StringValueNode s)
{
return(s.Value);
}
return(null);
}
public static bool TryGetSourceDirective(
this IHasDirectives hasDirectives,
NameString schemaName,
out SourceDirective sourceDirective)
{
sourceDirective = hasDirectives.Directives[DirectiveNames.Source]
.Select(t => t.ToObject <SourceDirective>())
.FirstOrDefault(t => schemaName.Equals(t.Schema));
return(sourceDirective != null);
}
public static T?GetFirstDirective <T>(
this IHasDirectives hasDirectives,
string name,
T?defaultValue = default)
{
IDirective?directive = hasDirectives.Directives[name].FirstOrDefault();
if (directive is null)
{
return(defaultValue);
}
return(directive.ToObject <T>());
}
public static bool TryGetSourceName(
this IHasDirectives hasDirectives,
NameString schemaName,
[NotNullWhen(true)] out NameString?sourceName)
{
if (TryGetSourceDirective(hasDirectives, schemaName, out SourceDirective? sd))
{
sourceName = sd.Name;
return(true);
}
sourceName = null;
return(false);
}