> On 18 Feb 2019, at 06:44, Akim Demaille <a...@lrde.epita.fr> wrote: > >> Le 18 févr. 2019 à 00:10, Hans Åberg <haber...@telia.com> a écrit : >> >>> On 17 Feb 2019, at 23:10, Peng Yu <pengyu...@gmail.com> wrote: >>> >>> This lexical tie-in creates feedback from the parser to the lexer. So >>> the lexer cannot be tested standalone. >>> >>> But the principle of separating lexer and parser is to make parser >>> builtin on top of the parser. Is there something that can avoid the >>> feedback yet still allow context-dependent parsing? Alternatively, how >>> to just testing the lexer without having to get the parser involved? >> >> The LARL(1) that Bison uses is for context free grammars only, so contexts >> must involve switches somehow. > > I don't think Peng was referring to context-sensitivity here in the > technical sense. He just means "lexical context depending on the > current state of the parser", which is still CFG. Let's not confuse > people by referring to something unrelated.
Subsequent discussions might clarify that. _______________________________________________ help-bison@gnu.org https://lists.gnu.org/mailman/listinfo/help-bison
