/// <summary>
/// Parses a schema definition.
/// <see cref="SchemaDefinitionNode" />:
/// schema Directives[isConstant:true]? { OperationTypeDefinition+ }
/// </summary>
/// <param name="context">The parser context.</param>
private SchemaDefinitionNode ParseSchemaDefinition(
ParserContext context)
{
SyntaxToken start = context.Current;
context.SkipDescription();
context.ExpectSchemaKeyword();
List <DirectiveNode> directives =
ParseDirectives(context, true);
List <OperationTypeDefinitionNode> operationTypeDefinitions =
ParseMany(context,
TokenKind.LeftBrace,
ParseOperationTypeDefinition,
TokenKind.RightBrace);
Location location = context.CreateLocation(start);
return(new SchemaDefinitionNode
(
location,
directives,
operationTypeDefinitions
));
}
/// <summary>
/// Parse schema definition extension.
/// <see cref="SchemaExtensionNode" />:
/// * - extend schema Directives[Const]? { OperationTypeDefinition+ }
/// * - extend schema Directives[Const]
/// </summary>
/// <param name="context">The parser context.</param>
private SchemaExtensionNode ParseSchemaExtension(ParserContext context)
{
SyntaxToken start = context.Current;
context.ExpectExtendKeyword();
context.ExpectSchemaKeyword();
List <DirectiveNode> directives =
ParseDirectives(context, true);
List <OperationTypeDefinitionNode> operationTypeDefinitions =
ParseOperationTypeDefinitions(context);
if (directives.Count == 0 && operationTypeDefinitions.Count == 0)
{
throw context.Unexpected(start);
}
Location location = context.CreateLocation(start);
return(new SchemaExtensionNode
(
location,
directives,
operationTypeDefinitions
));
}