public INodeVisitor Validate(ValidationContext context)
{
return(new EnterLeaveListener(_ =>
{
_.Match <Argument>(node =>
{
var ancestors = context.TypeInfo.GetAncestors();
var argumentOf = ancestors[ancestors.Length - 2];
if (argumentOf is Field)
{
var fieldDef = context.TypeInfo.GetFieldDef();
if (fieldDef != null)
{
var fieldArgDef = fieldDef.Arguments?.Find(node.Name);
if (fieldArgDef == null)
{
var parentType = context.TypeInfo.GetParentType();
Invariant.Check(parentType != null, "Parent type must not be null.");
context.ReportError(new ValidationError(
context.OriginalQuery,
"5.3.1",
UnknownArgMessage(
node.Name,
fieldDef.Name,
context.Print(parentType),
StringUtils.SuggestionList(node.Name, fieldDef.Arguments?.Select(q => q.Name))),
node)
{
Path = context.TypeInfo.GetPath()
});
}
}
}
else if (argumentOf is Directive)
{
var directive = context.TypeInfo.GetDirective();
if (directive != null)
{
var directiveArgDef = directive.Arguments?.Find(node.Name);
if (directiveArgDef == null)
{
context.ReportError(new ValidationError(
context.OriginalQuery,
"5.3.1",
UnknownDirectiveArgMessage(
node.Name,
directive.Name,
StringUtils.SuggestionList(node.Name, directive.Arguments?.Select(q => q.Name))),
node)
{
Path = context.TypeInfo.GetPath()
});
}
}
}
});
}));
}
public void ReportError(ValidationError error)
{
Invariant.Check(error != null, "Must provide a validation error.");
_errors.Add(error);
}
