public override object VisitArguments(GraphQLParser.ArgumentsContext context)
{
var arguments = new Arguments();
foreach (var arg in context.argument())
{
arguments.Add((Argument)Visit(arg));
}
return(arguments);
}
void ValidateArguments(__Field field, GraphQLParser.ArgumentsContext arguments)
{
if (arguments.argument().Select(x => x.NAME().GetText()).Distinct().Count() != arguments.argument().Count())
{
Error($"argument names are not unique", arguments);
}
foreach (var c in arguments.argument().Select(x => new { text = x.NAME().GetText(), ctx = x }))
{
var inputValue = field.GetInputValue(c.text);
if (inputValue == null)
{
Error($"Received a named argument - {c.text} that is not expected for field {field.name}", c.ctx);
}
var valueOrVariable = c.ctx.valueOrVariable();
if (valueOrVariable.value() != null)
{
ValidateArgumentType(valueOrVariable.value(), inputValue.type);
}
}
foreach (var q in field.args)
{
if (q.type.kind == __TypeKind.NON_NULL)
{
var argument = arguments.argument().FirstOrDefault(x => x.NAME().GetText() != q.name);
if (argument == null)
{
Error($"A required field - {q.name} is missing", arguments);
return;
}
if (argument.valueOrVariable().value().ToString() == "null")
{
Error($"A non-null field - {q.name} is called with null argument", arguments);
}
}
}
}
/// <summary>
/// Exit a parse tree produced by <see cref="GraphQLParser.arguments"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitArguments([NotNull] GraphQLParser.ArgumentsContext context)
{
}
