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Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 24 |
1 files changed, 24 insertions, 0 deletions
@@ -1,5 +1,29 @@ 2015-05-12 Kaz Kylheku <kaz@kylheku.com> + DWIM places must use Lisp-1 semantics. + + This really only affects code which does something like + (set [f x] y) and f resolves as a function. (The TXR Program + bent over backwards to install a mutable object into a function + binding.) In this situation, we need to update the function binding + f, rather than some variable f. + + * eval.c (op_lisp1_setq, op_lisp1_value): New static functions. + (eval_init): Register sys:lisp1-setq and sys:lisp1-value + special forms. + + * place.tl (sys:*lisp1*): New special variable. + (sys:l1-setq, sys:l1-val): New macros, optimizing + versions of sys:lisp1-setq and sys:lisp1-value special operators. + (sys:sym-place-update-expander, sys:sym-place-clobber-expander): + React to sys:*lisp1* variable by doing symbol access using Lisp-1 + semantics, with help of newly introduced macros and special forms. + (dwim): Bind sys:*lisp1* to true, if main argument is a symbolic place, + so that the update is done using Lisp-1 semantics. Use the + sys:l1-val operator when evaluating arguments. + +2015-05-12 Kaz Kylheku <kaz@kylheku.com> + * eval.c (lookup_var_l): Gut this function of its silly reimplementation of lookup_var. (op_setq): Use lookup_var instead of lookup_var_l. |