/// <summary>
/// Parses a field.
/// <see cref="FieldNode" />:
/// Alias? : Name Arguments? Directives? SelectionSet?
/// </summary>
/// <param name="context">The parser context.</param>
private static FieldNode ParseField(ParserContext context)
{
SyntaxToken start = context.Current;
var hasAlias = context.Peek(TokenKind.Colon);
NameNode alias = null;
NameNode name = null;
if (hasAlias)
{
alias = ParseName(context);
context.ExpectColon();
name = ParseName(context);
}
else
{
name = ParseName(context);
}
List <ArgumentNode> arguments = ParseArguments(context, false);
List <DirectiveNode> directives = ParseDirectives(context, false);
SelectionSetNode selectionSet = context.Current.IsLeftBrace()
? ParseSelectionSet(context)
: null;
Location location = context.CreateLocation(start);
return(new FieldNode
(
location,
name,
alias,
directives,
arguments,
selectionSet
));
}
