/// <summary>
///
/// </summary>
/// <param name="stream"></param>
/// <returns></returns>
/// <remarks>
///
/// See http://www.dmtf.org/sites/default/files/standards/documents/DSP0221_3.0.0a.pdf
/// A.1 Value definitions
///
/// literalValue = integerValue / realValue /
/// stringValue / octetStringValue
/// booleanValue /
/// nullValue /
/// dateTimeValue
///
/// </remarks>
internal new static LiteralValueAst Parse(ParserStream stream)
{
//Note: This is a good candidate for the strategy pattern
var peek = stream.Peek();
if (peek is IntegerLiteralToken)
{
// integerValue
return(IntegerValueAst.Parse(stream));
}
else if (peek is RealLiteralToken)
{
// doubleValue
return(RealValueAst.Parse(stream));
}
else if (peek is StringLiteralToken)
{
// stringValue
return(StringValueAst.Parse(stream));
}
else if (peek is BooleanLiteralToken)
{
// booleanValue
return(BooleanValueAst.Parse(stream));
}
else if (peek is NullLiteralToken)
{
// nullValue
return(NullValueAst.Parse(stream));
}
else
{
throw new UnexpectedTokenException(peek);
}
}
private CompilerDirectiveAst(PragmaToken pragmaKeyword, IdentifierToken pragmaName, StringValueAst pragmaParameter)
{
this.PragmaKeyword = pragmaKeyword ?? throw new ArgumentNullException(nameof(pragmaKeyword));
this.PragmaName = pragmaName ?? throw new ArgumentNullException(nameof(pragmaName));
this.PragmaParameter = pragmaParameter ?? throw new ArgumentNullException(nameof(pragmaParameter));
}
