/// <summary>
/// Processes the stream as far as it needs to to generate a fully qualiffied
/// <see cref="SyntaxNode" /> based on its internal ruleset. All implementations
/// are expected to validate the stream is at a location which it can consume
/// and throw an <see cref="GraphQLSyntaxException" /> as appropriate and consume
/// the last character in their phrase, leaving the stream primed for the next
/// maker in the series.
/// </summary>
/// <param name="tokenStream">The token stream.</param>
/// <returns>LexicalToken.</returns>
public SyntaxNode MakeNode(TokenStream tokenStream)
{
SyntaxNode node = null;
if (tokenStream.Match <NullToken>())
{
node = new ScalarValueNode(
tokenStream.Location,
ScalarValueType.Boolean,
ParserConstants.Keywords.Null);
}
else
{
tokenStream.MatchOrThrow <NameToken>();
if (tokenStream.Match(ParserConstants.Keywords.True, ParserConstants.Keywords.False))
{
node = new ScalarValueNode(
tokenStream.Location,
ScalarValueType.Boolean,
tokenStream.ActiveToken.Text);
}
else
{
GraphQLSyntaxException.ThrowFromExpectation(
tokenStream.Location,
"{true|false}",
tokenStream.ActiveToken.Text.ToString());
}
}
tokenStream.Next();
return(node);
}
/// <summary>
/// Processes the queue as far as it needs to to generate a fully qualiffied
/// <see cref="SyntaxNode" /> based on its ruleset.
/// </summary>
/// <param name="tokenStream">The token stream.</param>
/// <returns>LexicalToken.</returns>
public SyntaxNode MakeNode(TokenStream tokenStream)
{
SyntaxNode node;
if (tokenStream.Match <NullToken>())
{
node = new ScalarValueNode(
tokenStream.Location,
ScalarValueType.String,
tokenStream.ActiveToken.Text);
}
else
{
tokenStream.MatchOrThrow <StringToken>();
node = new ScalarValueNode(tokenStream.Location, ScalarValueType.String, tokenStream.ActiveToken.Text);
}
tokenStream.Next();
return(node);
}
/// <summary>
/// Initializes a new instance of the <see cref="QueryScalarInputValue" /> class.
/// </summary>
/// <param name="value">The value parsed from a query document.</param>
public QueryScalarInputValue(ScalarValueNode value)
: base(value)
{
this.ValueType = value.ValueType;
this.Value = value.Value;
}
