private bool Expect(TokenType pSymbol)
{
if (!_stream.EOF && Current.Type == pSymbol)
{
_stream.MoveNext();
return(true);
}
else
{
Compiler.ReportError(CompilerErrorType.InvalidSyntax, PeekSpan(), pSymbol.ToString(), Current.Type.ToString());
return(false);
}
}
public Expression?Parse(ITokenStream tokens)
{
if (!tokens.MoveNext())
{
return(null);
}
if (tokens.Current is IEvaluatable valueToken)
{
tokens.MoveNext();
return(valueToken.GetValue());
}
else
{
return(null);
}
}
private bool MatchesOperation(ITokenStream tokens)
{
if (!tokens.MoveNext())
{
return(false);
}
if (tokens.Current is DelimiterToken delimiterToken)
{
if (delimiterToken.Content == OperatorDelimiter)
{
return(true);
}
}
return(false);
}