> On 1 Dec 2024, at 19:08, Maury Markowitz wrote:
>
>> This will probably require you to take into account the current context; see
>> Hans's reply.
>
> Yeah, I am completely new to that side of things. I'm in the bison dox now
> and I can't say I'm understanding much yet.
Check the Flex ma
> On Nov 30, 2024, at 8:42 PM, James K. Lowden wrote:
> I'm just a bit skeptical. If the rule is that
>
>> DATA 10,20,"HELLO,WORLD!"
> and
>> DATA 10,20,HELLO,WORLD!
> Or is it the case that the quoted equivalent would be
>
>> DATA 10,20,"HELLO","WORLD!"
This. It's basically CSV, and given
> On Dec 1, 2024, at 12:31 PM, EML wrote:
>
> This matches, among other things, a string which starts with a double quote,
> terminated by a newline, with no closing quote. Not even Basic can be that
> bad.
Sorry to be the bearer of bad news, but BASIC is precisely that bad. Since many
PRINTs
> On 1 Dec 2024, at 16:07, Maury Markowitz wrote:
>
> But many dialects allow strings to be unquoted as long as they do not contain
> a line end, colon or comma:
>
> DATA 10,20,HELLO,WORLD!
One way is to use context switches; see the Flex and Bison manuals.
In the .l file one has say:
%x D
Basic... wow. Start by fixing your regexes:
[0-9]*[0-9.][0-9]*([Ee][-+]?[0-9]+)? {
yylval.d = strtod(yytext, NULL);
return NUMBER;
}
This matches a single '.', '.E0', and so on. Presumably you want
something which looks more like
dec_digit [0-9]
suffix
On Sun, 1 Dec 2024 10:07:45 -0500
Maury Markowitz wrote:
> DATA 10,20,HELLO,WORLD!
>
> I am looking for ways to attack this.
To add to what Hans said, you want to extend what the scanner accepts
in a DATA statement. In your case, DATA has a slightly more expansive
view of what an expression is
I seem to have programmed myself into a corner, and I'm hoping someone can
offer some suggestions.
Source code here: https://github.com/maurymarkowitz/RetroBASIC/tree/master/src
The BASIC language has two constant types, numbers and strings. The ~300 line
scanner is basically a list of the keyw
