convertType method

GraphQLType convertType(TypeContext ctx, { bool usePolymorphicName = false, GraphQLObjectType? parent, })

Implementation

GraphQLType convertType(TypeContext ctx,
    {bool usePolymorphicName = false, GraphQLObjectType? parent}) {
  var listType = ctx.listType;
  var typeName = ctx.typeName;
  if (listType != null) {
    var convert = convertType(listType.innerType);
    return GraphQLListType(convert);
  } else if (typeName != null) {
    final name = typeName.name;

    switch (name) {
      case 'Int':
        return graphQLInt;
      case 'Float':
        return graphQLFloat;
      case 'String':
        return graphQLString;
      case 'Boolean':
        return graphQLBoolean;
      case 'ID':
        return graphQLId;
      case 'Date':
      case 'DateTime':
        return graphQLDate;
      default:
        usePolymorphicName = usePolymorphicName && parent != null;

        if (usePolymorphicName) {
          final ret = customTypes.firstWhereOrNull((t) {
            return t is GraphQLObjectType &&
                t.polymorphicName == name &&
                parent.possibleTypes.contains(t);
          });

          if (ret != null) {
            return ret;
          }
        }

        return customTypes.firstWhere((t) {
          return t.name == name;
        },
            orElse: () =>
                throw ArgumentError('Unknown GraphQL type: "$name"'));
    }
  } else {
    throw ArgumentError('Invalid GraphQL type: "${ctx.span.text}"');
  }
}