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| author | Kaz Kylheku <kaz@kylheku.com> | 2014-02-15 17:41:30 -0800 |
|---|---|---|
| committer | Kaz Kylheku <kaz@kylheku.com> | 2014-02-15 17:41:30 -0800 |
| commit | 53fa77578bcc3cebf491656d3c2e7d07c7493674 (patch) | |
| tree | 429937531a09627b9eafa0a4cbd20aa3eb25bdcb /ChangeLog | |
| parent | 5e89795f66750094ccac9d13a1f2001dde3d1226 (diff) | |
| download | txr-53fa77578bcc3cebf491656d3c2e7d07c7493674.tar.gz txr-53fa77578bcc3cebf491656d3c2e7d07c7493674.tar.bz2 txr-53fa77578bcc3cebf491656d3c2e7d07c7493674.zip | |
First cut at implementation of macros.
* eval.c (top_mb, defmacro_s, macro_time_s, whole_k, env_k): New global
variables.
(expand_params): Recurse to handle macro parameter lists too.
(bind_macro_params, op_defmacro, expand_macro): New static functions.
(expand): Evaluate defmacro forms and macro-time forms at expansion
time. Recognize and expand macros (albeit not yet with proper lexical
scoping: local bindings are not able to shadow a macro).
(eval_init): Protect top_mb from GC and initialize it.
Intern new symbols defmacro, macro-time, and :whole.
Register defmacro operator in op_table.
* match.h (env_k): Added declaration for existing external variable.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 17 |
1 files changed, 17 insertions, 0 deletions
@@ -1,5 +1,22 @@ 2014-02-15 Kaz Kylheku <kaz@kylheku.com> + First cut at implementation of macros. + + * eval.c (top_mb, defmacro_s, macro_time_s, whole_k, env_k): New global + variables. + (expand_params): Recurse to handle macro parameter lists too. + (bind_macro_params, op_defmacro, expand_macro): New static functions. + (expand): Evaluate defmacro forms and macro-time forms at expansion + time. Recognize and expand macros (albeit not yet with proper lexical + scoping: local bindings are not able to shadow a macro). + (eval_init): Protect top_mb from GC and initialize it. + Intern new symbols defmacro, macro-time, and :whole. + Register defmacro operator in op_table. + + * match.h (env_k): Added declaration for existing external variable. + +2014-02-15 Kaz Kylheku <kaz@kylheku.com> + Bugfix: parameters of defun were not being treated by expander. They need to be since they can contain evaluable initforms for default arguments. Ditto with lambda; lambda parameters were being treated |