On 03 Mar 2014, at 21:44, Hans-Peter Diettrich wrote: > Ewald schrieb: >> On 03 Mar 2014, at 12:49, Hans-Peter Diettrich wrote: > >>> How (which data type) does *your* parser store untyped numerical >>> constants? >> Roughly like this (syntax may be a bit awry, but you get the point): >> TIntegerNumber = Record Case SignedNess: TSignedNess of snPositive: >> UValue: QWord; snNegative: SValue: Int64; End; >> The parser detects wether there is a `-` in front of the constant and >> stores the right sign in the SignedNess field. > > A parser doesn't work like that - too many possible cases with unary minus.
Perhaps yours doesn't, I didn't say what kind of syntax `my parser` parses... Quite frankly I don't care how my parser, your parser or fpc's parser work in detail, as long as something gets parsed. Hey, that's the purpose of a parser after all ;-) > If you need an datatype for integers with more bits than provided by the > compiler, you must roll your own datatype. Of coure. But nobody stipulated that I can't use native pascal types (like qword, int64, byte, ...) for storing this. -- Ewald _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel
