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| author | Kaz Kylheku <kaz@kylheku.com> | 2015-08-10 22:31:01 -0700 |
|---|---|---|
| committer | Kaz Kylheku <kaz@kylheku.com> | 2015-08-10 22:31:01 -0700 |
| commit | f9c0def5b6049bc600051b928910f724e14af4f5 (patch) | |
| tree | 03fd27d1f4392d2b04c651646d6d3bec80cbeabe /parser.h | |
| parent | d36002e99bd8c844a0f1abdc26e66be7f94409b4 (diff) | |
| download | txr-f9c0def5b6049bc600051b928910f724e14af4f5.tar.gz txr-f9c0def5b6049bc600051b928910f724e14af4f5.tar.bz2 txr-f9c0def5b6049bc600051b928910f724e14af4f5.zip | |
Dot with no whitespace generates qref syntax.
a.b.(expr ...).c -> (qref a b (expr ...) c)
Consing dot requires whitespace.
* eval.c (qref_s): New symbol global variable.
(eval_init): Initialize qref_s.
* eval.h (qref_s): Declared.
* parser.l (REQWS): New pattern definition, required whitespace.
(grammar): New rules to scan CONSDOT (space required on both
sides) and LAMBDOT (space required after).
* parser.y (CONSDOT, LAMBDOT): New token types.
(list): (. n_expr) rule replaced with LAMBDOT and CONSDOT.
(r_exprs): r_exprs . n_expr consing dot rule replaced with CONSDOT.
(n_expr): New n_expr . n_expr rule introduced here for producing
qref expressions.
(yybadtoken): Handle CONSDOT and LAMBDOT.
* txr.1: Documented qref dot.
Diffstat (limited to 'parser.h')
0 files changed, 0 insertions, 0 deletions