> On 3 Dec 2024, at 17:44, Maury Markowitz <maury.markow...@gmail.com> wrote: > >> On Dec 1, 2024, at 2:07 PM, James K. Lowden <jklow...@schemamania.org> wrote: >> >> require some real thinking, never easy. For example, is >> >> 10100 DATA "one",2B,"three" >> >> valid? If it is, you'll need one pattern for "leading alpha" that might >> be just one character, and another for "leading digit" that requires > > On further reflection, it seems it is much easier to parse everything in the > data section as a string, and then turn it into a string or number at runtime > based on the variable that's reading it. That's how INPUT works, so I can > re-use that code.
It might be easier to first write a rule for unquoted strings, and then add a start condition when the quote arrives. This parallels the example with any_identifier that I gave. In general, one tries to exploit tokens to do special things, which is also useful in a Bison parser when adding mid-rule actions.
