private static bool TryCreateNativeTypeParserDeserializer(
Action <SchemaError> reportError,
InputObjectType inputObjectType,
Type nativeType,
out Func <ObjectValueNode, object> deserializer)
{
if (nativeType.IsDefined(typeof(GraphQLLiteralParserAttribute)))
{
Type parserType = nativeType
.GetCustomAttribute <GraphQLLiteralParserAttribute>().Type;
if (typeof(ILiteralParser).IsAssignableFrom(parserType))
{
ILiteralParser parser = (ILiteralParser)Activator
.CreateInstance(parserType);
deserializer = literal => parser.ParseLiteral(literal);
return(true);
}
else
{
reportError(new SchemaError(
"A literal parser has to implement `ILiteralParser`.",
inputObjectType));
}
}
deserializer = null;
return(false);
}
/// <summary>
/// Initializes a new instance of the <see cref="PatternParser" /> class.
/// </summary>
/// <param name="literalParser">
/// The literal parser.
/// </param>
public PatternParser(ILiteralParser literalParser)
{
if (literalParser == null)
{
throw new ArgumentNullException("literalParser");
}
this.literalParser = literalParser;
}
/// <summary>
/// Initializes a new instance of the <see cref="PatternParser" /> class.
/// </summary>
/// <param name="literalParser">
/// The literal parser.
/// </param>
public PatternParser(ILiteralParser literalParser)
{
if (literalParser == null)
{
throw new ArgumentNullException("literalParser");
}
this.literalParser = literalParser;
}
public virtual void Reset(IListSource <Token> tokens, ISourceFile file, IParsingOptions parsingOptions)
{
CheckParam.IsNotNull("tokens", tokens);
CheckParam.IsNotNull("file", file);
_tokensRoot = _tokens = tokens;
_sourceFile = file;
_literalParser = parsingOptions?.LiteralParser ?? EcsLiteralHandlers.Value;
F = new LNodeFactory(file);
InputPosition = 0; // reads LT(0)
_tentativeErrors = new TentativeState(false);
}
public void Reset(IList <Token> list, ISourceFile file, IParsingOptions options, int startIndex = 0)
{
Reset(list, default(Token), file, startIndex);
_literalParser = options?.LiteralParser ?? StandardLiteralHandlers.Value;
}
public Les3Parser(IList <Token> list, ISourceFile file, IMessageSink sink, IParsingOptions options, int startIndex = 0)
: base(list, prev => new Token((int)TokenType.EOF, prev.EndIndex, 0, null), (int)TokenType.EOF, file, startIndex)
{
_literalParser = options?.LiteralParser ?? StandardLiteralHandlers.Value;
ErrorSink = sink;
}
public static bool IsUnknown <T>(ILiteralParser <T> parser)
{
return(parser is UnknownLiteralParser <T>);
}
