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deprecate scm_sym2var

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* libguile/deprecated.h:
* libguile/deprecated.c (scm_sym2var): Deprecate this function.

* libguile/modules.h:
* libguile/modules.c (scm_module_ensure_local_variable): New public
  function, replacing scm_sym2var with a true definep, without going
  through eval closures (which are deprecated).
  (scm_current_module): Rework to do something sensible before modules
  are booted.
  (scm_module_lookup, scm_lookup): Refactor to use scm_module_variable.
  (scm_module_define, scm_define): Refactor to use
  scm_module_ensure_local_variable.

* libguile/vm-i-system.c (define!): Use scm_define.

* libguile/vm.c (resolve_variable): Use scm_module_lookup.

* libguile/macros.c (scm_make_syntax_transformer): Use
  scm_module_variable.

* libguile/gdbint.c (gdb_binding): Use scm_define.

* doc/ref/api-modules.texi (Accessing Modules from C): Add docs for
  scm_module_ensure_local_variable.
This commit is contained in:
Andy Wingo 2012-05-23 11:46:30 +02:00
parent 15bb587f45
commit 62e15979b5
9 changed files with 132 additions and 97 deletions
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11
doc/ref/api-modules.texi
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@ -1008,6 +1008,17 @@ Like @code{scm_c_define} and @code{scm_define}, but the specified
module is used instead of the current one.
@end deftypefn
In some rare cases, you may need to access the variable that
@code{scm_module_define} would have accessed, without changing the
binding of the existing variable, if one is present. In that case, use
@code{scm_module_ensure_local_variable}:
@deftypefn {C Function} SCM scm_module_ensure_local_variable (SCM @var{module}, SCM @var{sym})
Like @code{scm_module_define}, but if the @var{sym} is already locally
bound in that module, the variable's existing binding is not reset.
Returns a variable.
@end deftypefn
@deftypefn {C Function} SCM scm_module_reverse_lookup (SCM @var{module}, SCM @var{variable})
Find the symbol that is bound to @var{variable} in @var{module}. When no such binding is found, return @code{#f}.
@end deftypefn