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Merge remote-tracking branch 'origin/stable-2.0'

This commit removes code that was newly deprecated in stable-2.0.

Conflicts:
	libguile/deprecated.c
	libguile/deprecated.h
	libguile/modules.c
	module/ice-9/boot-9.scm
	module/ice-9/deprecated.scm
This commit is contained in:
Andy Wingo 2012-05-23 12:38:56 +02:00
commit 747747ee06
14 changed files with 81 additions and 302 deletions

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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. module is used instead of the current one.
@end deftypefn @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}) @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}. Find the symbol that is bound to @var{variable} in @var{module}. When no such binding is found, return @code{#f}.
@end deftypefn @end deftypefn

View file

@ -2,7 +2,7 @@
deprecate something, move it here when that is feasible. deprecate something, move it here when that is feasible.
*/ */
/* Copyright (C) 2003, 2004, 2006, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. /* Copyright (C) 2003, 2004, 2006, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License * modify it under the terms of the GNU Lesser General Public License
@ -78,6 +78,7 @@ scm_immutable_double_cell (scm_t_bits car, scm_t_bits cbr,
void void
scm_i_init_deprecated () scm_i_init_deprecated ()
{ {

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@ -5,7 +5,7 @@
#ifndef SCM_DEPRECATED_H #ifndef SCM_DEPRECATED_H
#define SCM_DEPRECATED_H #define SCM_DEPRECATED_H
/* Copyright (C) 2003,2004, 2005, 2006, 2007, 2009, 2010, 2011 Free Software Foundation, Inc. /* Copyright (C) 2003,2004, 2005, 2006, 2007, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License * modify it under the terms of the GNU Lesser General Public License

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@ -3,7 +3,7 @@
#ifndef SCM_EVAL_H #ifndef SCM_EVAL_H
#define SCM_EVAL_H #define SCM_EVAL_H
/* Copyright (C) 1995,1996,1998,1999,2000,2001,2002,2003,2004,2008,2009,2010,2011 /* Copyright (C) 1995,1996,1998,1999,2000,2001,2002,2003,2004,2008,2009,2010,2011,2012
* Free Software Foundation, Inc. * Free Software Foundation, Inc.
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
@ -57,10 +57,6 @@ typedef SCM (*scm_t_trampoline_2) (SCM proc, SCM arg1, SCM arg2);
#define SCM_EXTEND_ENV scm_acons #define SCM_EXTEND_ENV scm_acons
/*fixme* This should probably be removed throught the code. */
#define SCM_TOP_LEVEL_LOOKUP_CLOSURE (scm_current_module_lookup_closure())
SCM_API SCM scm_call_0 (SCM proc); SCM_API SCM scm_call_0 (SCM proc);

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@ -1,5 +1,5 @@
/* GDB interface for Guile /* GDB interface for Guile
* Copyright (C) 1996,1997,1999,2000,2001,2002,2004,2009,2011 * Copyright (C) 1996,1997,1999,2000,2001,2002,2004,2009,2011,2012
* Free Software Foundation, Inc. * Free Software Foundation, Inc.
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
@ -234,8 +234,7 @@ gdb_binding (SCM name, SCM value)
} }
SCM_BEGIN_FOREIGN_BLOCK; SCM_BEGIN_FOREIGN_BLOCK;
{ {
SCM var = scm_sym2var (name, SCM_TOP_LEVEL_LOOKUP_CLOSURE, SCM_BOOL_T); scm_define (name, value);
SCM_VARIABLE_SET (var, value);
} }
SCM_END_FOREIGN_BLOCK; SCM_END_FOREIGN_BLOCK;
return 0; return 0;

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@ -1,4 +1,4 @@
/* Copyright (C) 1998,1999,2000,2001,2002,2003,2004,2008,2009,2010,2011 /* Copyright (C) 1998,1999,2000,2001,2002,2003,2004,2008,2009,2010,2011,2012
* Free Software Foundation, Inc. * Free Software Foundation, Inc.
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
@ -2750,13 +2750,21 @@ SCM_KEYWORD (k_getter, "getter");
SCM SCM
scm_ensure_accessor (SCM name) scm_ensure_accessor (SCM name)
{ {
SCM gf = scm_call_2 (SCM_TOP_LEVEL_LOOKUP_CLOSURE, name, SCM_BOOL_F); SCM var, gf;
var = scm_module_variable (scm_current_module (), name);
if (SCM_VARIABLEP (var) && !SCM_UNBNDP (SCM_VARIABLE_REF (var)))
gf = SCM_VARIABLE_REF (var);
else
gf = SCM_BOOL_F;
if (!SCM_IS_A_P (gf, scm_class_accessor)) if (!SCM_IS_A_P (gf, scm_class_accessor))
{ {
gf = scm_make (scm_list_3 (scm_class_generic, k_name, name)); gf = scm_make (scm_list_3 (scm_class_generic, k_name, name));
gf = scm_make (scm_list_5 (scm_class_accessor, gf = scm_make (scm_list_5 (scm_class_accessor,
k_name, name, k_setter, gf)); k_name, name, k_setter, gf));
} }
return gf; return gf;
} }

View file

@ -1,4 +1,4 @@
/* Copyright (C) 1995,1996,1997,1998,2000,2001,2002,2003, 2006, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. /* Copyright (C) 1995,1996,1997,1998,2000,2001,2002,2003, 2006, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License * modify it under the terms of the GNU Lesser General Public License
@ -92,8 +92,8 @@ SCM_DEFINE (scm_make_syntax_transformer, "make-syntax-transformer", 3, 0, 0,
SCM existing_var; SCM existing_var;
SCM_VALIDATE_SYMBOL (1, name); SCM_VALIDATE_SYMBOL (1, name);
existing_var = scm_sym2var (name, scm_current_module_lookup_closure (),
SCM_BOOL_F); existing_var = scm_module_variable (scm_current_module (), name);
if (scm_is_true (existing_var) if (scm_is_true (existing_var)
&& scm_is_true (scm_variable_bound_p (existing_var)) && scm_is_true (scm_variable_bound_p (existing_var))
&& SCM_MACROP (SCM_VARIABLE_REF (existing_var))) && SCM_MACROP (SCM_VARIABLE_REF (existing_var)))

View file

@ -80,9 +80,10 @@ SCM_DEFINE (scm_current_module, "current-module", 0, 0, 0,
"Return the current module.") "Return the current module.")
#define FUNC_NAME s_scm_current_module #define FUNC_NAME s_scm_current_module
{ {
SCM curr = scm_fluid_ref (the_module); if (scm_module_system_booted_p)
return scm_fluid_ref (the_module);
return scm_is_true (curr) ? curr : scm_the_root_module (); else
return SCM_BOOL_F;
} }
#undef FUNC_NAME #undef FUNC_NAME
@ -235,38 +236,6 @@ scm_c_export (const char *name, ...)
} }
/* Environments */
SCM_SYMBOL (sym_module, "module");
SCM
scm_lookup_closure_module (SCM proc)
{
if (scm_is_false (proc))
return scm_the_root_module ();
else if (SCM_EVAL_CLOSURE_P (proc))
return SCM_PACK (SCM_SMOB_DATA (proc));
else
{
SCM mod;
/* FIXME: The `module' property is no longer set on eval closures, as it
introduced a circular reference that precludes garbage collection of
modules with the current weak hash table semantics (see
http://lists.gnu.org/archive/html/guile-devel/2009-01/msg00102.html and
http://thread.gmane.org/gmane.comp.programming.garbage-collection.boehmgc/2465
for details). Since it doesn't appear to be used (only in this
function, which has 1 caller), we no longer extend
`set-module-eval-closure!' to set the `module' property. */
abort ();
mod = scm_procedure_property (proc, sym_module);
if (scm_is_false (mod))
mod = scm_the_root_module ();
return mod;
}
}
/* /*
* C level implementation of the standard eval closure * C level implementation of the standard eval closure
* *
@ -519,84 +488,37 @@ SCM_DEFINE (scm_module_variable, "module-variable", 2, 0, 0,
} }
#undef FUNC_NAME #undef FUNC_NAME
scm_t_bits scm_tc16_eval_closure;
#define SCM_F_EVAL_CLOSURE_INTERFACE (1<<0)
#define SCM_EVAL_CLOSURE_INTERFACE_P(e) \
(SCM_SMOB_FLAGS (e) & SCM_F_EVAL_CLOSURE_INTERFACE)
/* NOTE: This function may be called by a smob application
or from another C function directly. */
SCM SCM
scm_eval_closure_lookup (SCM eclo, SCM sym, SCM definep) scm_module_ensure_local_variable (SCM module, SCM sym)
#define FUNC_NAME "module-ensure-local-variable"
{ {
SCM module = SCM_PACK (SCM_SMOB_DATA (eclo)); if (SCM_LIKELY (scm_module_system_booted_p))
if (scm_is_true (definep))
{ {
if (SCM_EVAL_CLOSURE_INTERFACE_P (eclo)) SCM_VALIDATE_MODULE (1, module);
return SCM_BOOL_F; SCM_VALIDATE_SYMBOL (2, sym);
return scm_call_2 (SCM_VARIABLE_REF (module_make_local_var_x_var), return scm_call_2 (SCM_VARIABLE_REF (module_make_local_var_x_var),
module, sym); module, sym);
} }
else
return scm_module_variable (module, sym);
}
SCM_DEFINE (scm_standard_eval_closure, "standard-eval-closure", 1, 0, 0, {
(SCM module), SCM handle, var;
"Return an eval closure for the module @var{module}.")
#define FUNC_NAME s_scm_standard_eval_closure handle = scm_hashq_create_handle_x (scm_pre_modules_obarray,
{ sym, SCM_BOOL_F);
SCM_RETURN_NEWSMOB (scm_tc16_eval_closure, SCM_UNPACK (module)); var = SCM_CDR (handle);
if (scm_is_false (var))
{
var = scm_make_variable (SCM_UNDEFINED);
SCM_SETCDR (handle, var);
}
return var;
}
} }
#undef FUNC_NAME #undef FUNC_NAME
SCM_DEFINE (scm_standard_interface_eval_closure,
"standard-interface-eval-closure", 1, 0, 0,
(SCM module),
"Return a interface eval closure for the module @var{module}. "
"Such a closure does not allow new bindings to be added.")
#define FUNC_NAME s_scm_standard_interface_eval_closure
{
SCM_RETURN_NEWSMOB (scm_tc16_eval_closure | (SCM_F_EVAL_CLOSURE_INTERFACE<<16),
SCM_UNPACK (module));
}
#undef FUNC_NAME
SCM_DEFINE (scm_eval_closure_module,
"eval-closure-module", 1, 0, 0,
(SCM eval_closure),
"Return the module associated with this eval closure.")
/* the idea is that eval closures are really not the way to do things, they're
superfluous given our module system. this function lets mmacros migrate away
from eval closures. */
#define FUNC_NAME s_scm_eval_closure_module
{
SCM_MAKE_VALIDATE_MSG (SCM_ARG1, eval_closure, EVAL_CLOSURE_P,
"eval-closure");
return SCM_SMOB_OBJECT (eval_closure);
}
#undef FUNC_NAME
SCM
scm_module_lookup_closure (SCM module)
{
if (scm_is_false (module))
return SCM_BOOL_F;
else
return SCM_MODULE_EVAL_CLOSURE (module);
}
SCM
scm_current_module_lookup_closure ()
{
if (scm_module_system_booted_p)
return scm_module_lookup_closure (scm_current_module ());
else
return SCM_BOOL_F;
}
SCM_SYMBOL (sym_macroexpand, "macroexpand"); SCM_SYMBOL (sym_macroexpand, "macroexpand");
SCM_DEFINE (scm_module_transformer, "module-transformer", 1, 0, 0, SCM_DEFINE (scm_module_transformer, "module-transformer", 1, 0, 0,
@ -676,61 +598,6 @@ scm_module_public_interface (SCM module)
return scm_call_1 (SCM_VARIABLE_REF (module_public_interface_var), module); return scm_call_1 (SCM_VARIABLE_REF (module_public_interface_var), module);
} }
/* scm_sym2var
*
* looks up the variable bound to SYM according to PROC. PROC should be
* a `eval closure' of some module.
*
* When no binding exists, and DEFINEP is true, create a new binding
* with a initial value of SCM_UNDEFINED. Return `#f' when DEFINEP as
* false and no binding exists.
*
* When PROC is `#f', it is ignored and the binding is searched for in
* the scm_pre_modules_obarray (a `eq' hash table).
*/
SCM
scm_sym2var (SCM sym, SCM proc, SCM definep)
#define FUNC_NAME "scm_sym2var"
{
SCM var;
if (SCM_HEAP_OBJECT_P (proc))
{
if (SCM_EVAL_CLOSURE_P (proc))
{
/* Bypass evaluator in the standard case. */
var = scm_eval_closure_lookup (proc, sym, definep);
}
else
var = scm_call_2 (proc, sym, definep);
}
else
{
SCM handle;
if (scm_is_false (definep))
var = scm_hashq_ref (scm_pre_modules_obarray, sym, SCM_BOOL_F);
else
{
handle = scm_hashq_create_handle_x (scm_pre_modules_obarray,
sym, SCM_BOOL_F);
var = SCM_CDR (handle);
if (scm_is_false (var))
{
var = scm_make_variable (SCM_UNDEFINED);
SCM_SETCDR (handle, var);
}
}
}
if (scm_is_true (var) && !SCM_VARIABLEP (var))
SCM_MISC_ERROR ("~S is not bound to a variable", scm_list_1 (sym));
return var;
}
#undef FUNC_NAME
SCM SCM
scm_c_module_lookup (SCM module, const char *name) scm_c_module_lookup (SCM module, const char *name)
{ {
@ -742,9 +609,7 @@ scm_module_lookup (SCM module, SCM sym)
#define FUNC_NAME "module-lookup" #define FUNC_NAME "module-lookup"
{ {
SCM var; SCM var;
SCM_VALIDATE_MODULE (1, module); var = scm_module_variable (module, sym);
var = scm_sym2var (sym, scm_module_lookup_closure (module), SCM_BOOL_F);
if (scm_is_false (var)) if (scm_is_false (var))
unbound_variable (FUNC_NAME, sym); unbound_variable (FUNC_NAME, sym);
return var; return var;
@ -760,11 +625,7 @@ scm_c_lookup (const char *name)
SCM SCM
scm_lookup (SCM sym) scm_lookup (SCM sym)
{ {
SCM var = return scm_module_lookup (scm_current_module (), sym);
scm_sym2var (sym, scm_current_module_lookup_closure (), SCM_BOOL_F);
if (scm_is_false (var))
unbound_variable (NULL, sym);
return var;
} }
SCM SCM
@ -896,10 +757,10 @@ scm_module_define (SCM module, SCM sym, SCM value)
#define FUNC_NAME "module-define" #define FUNC_NAME "module-define"
{ {
SCM var; SCM var;
SCM_VALIDATE_MODULE (1, module);
var = scm_sym2var (sym, scm_module_lookup_closure (module), SCM_BOOL_T); var = scm_module_ensure_local_variable (module, sym);
SCM_VARIABLE_SET (var, value); SCM_VARIABLE_SET (var, value);
return var; return var;
} }
#undef FUNC_NAME #undef FUNC_NAME
@ -917,11 +778,9 @@ SCM_DEFINE (scm_define, "define!", 2, 0, 0,
"not a macro.") "not a macro.")
#define FUNC_NAME s_scm_define #define FUNC_NAME s_scm_define
{ {
SCM var;
SCM_VALIDATE_SYMBOL (SCM_ARG1, sym); SCM_VALIDATE_SYMBOL (SCM_ARG1, sym);
var = scm_sym2var (sym, scm_current_module_lookup_closure (), SCM_BOOL_T);
SCM_VARIABLE_SET (var, value); return scm_module_define (scm_current_module (), sym, value);
return var;
} }
#undef FUNC_NAME #undef FUNC_NAME
@ -1009,9 +868,6 @@ scm_init_modules ()
#include "libguile/modules.x" #include "libguile/modules.x"
module_make_local_var_x_var = scm_c_define ("module-make-local-var!", module_make_local_var_x_var = scm_c_define ("module-make-local-var!",
SCM_UNDEFINED); SCM_UNDEFINED);
scm_tc16_eval_closure = scm_make_smob_type ("eval-closure", 0);
scm_set_smob_apply (scm_tc16_eval_closure, scm_eval_closure_lookup, 2, 0, 0);
the_module = scm_make_fluid (); the_module = scm_make_fluid ();
} }

View file

@ -3,7 +3,7 @@
#ifndef SCM_MODULES_H #ifndef SCM_MODULES_H
#define SCM_MODULES_H #define SCM_MODULES_H
/* Copyright (C) 1998, 2000, 2001, 2002, 2003, 2006, 2007, 2008, 2011 Free Software Foundation, Inc. /* Copyright (C) 1998, 2000, 2001, 2002, 2003, 2006, 2007, 2008, 2011, 2012 Free Software Foundation, Inc.
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License * modify it under the terms of the GNU Lesser General Public License
@ -64,16 +64,10 @@ SCM_API scm_t_bits scm_module_tag;
#define SCM_MODULE_IMPORT_OBARRAY(module) \ #define SCM_MODULE_IMPORT_OBARRAY(module) \
SCM_PACK (SCM_STRUCT_DATA (module)[scm_module_index_import_obarray]) SCM_PACK (SCM_STRUCT_DATA (module)[scm_module_index_import_obarray])
SCM_API scm_t_bits scm_tc16_eval_closure;
#define SCM_EVAL_CLOSURE_P(x) SCM_TYP16_PREDICATE (scm_tc16_eval_closure, x)
SCM_API SCM scm_current_module (void); SCM_API SCM scm_current_module (void);
SCM_API SCM scm_the_root_module (void); SCM_API SCM scm_the_root_module (void);
SCM_API SCM scm_module_variable (SCM module, SCM sym);
SCM_API SCM scm_module_local_variable (SCM module, SCM sym);
SCM_API SCM scm_interaction_environment (void); SCM_API SCM scm_interaction_environment (void);
SCM_API SCM scm_set_current_module (SCM module); SCM_API SCM scm_set_current_module (SCM module);
@ -81,6 +75,10 @@ SCM_API SCM scm_c_call_with_current_module (SCM module,
SCM (*func)(void *), void *data); SCM (*func)(void *), void *data);
SCM_API void scm_dynwind_current_module (SCM module); SCM_API void scm_dynwind_current_module (SCM module);
SCM_API SCM scm_module_variable (SCM module, SCM sym);
SCM_API SCM scm_module_local_variable (SCM module, SCM sym);
SCM_API SCM scm_module_ensure_local_variable (SCM module, SCM sym);
SCM_API SCM scm_c_lookup (const char *name); SCM_API SCM scm_c_lookup (const char *name);
SCM_API SCM scm_c_define (const char *name, SCM val); SCM_API SCM scm_c_define (const char *name, SCM val);
SCM_API SCM scm_lookup (SCM symbol); SCM_API SCM scm_lookup (SCM symbol);
@ -115,20 +113,11 @@ SCM_API SCM scm_c_define_module (const char *name,
SCM_API void scm_c_use_module (const char *name); SCM_API void scm_c_use_module (const char *name);
SCM_API void scm_c_export (const char *name, ...); SCM_API void scm_c_export (const char *name, ...);
SCM_API SCM scm_sym2var (SCM sym, SCM thunk, SCM definep);
SCM_API SCM scm_module_public_interface (SCM module); SCM_API SCM scm_module_public_interface (SCM module);
SCM_API SCM scm_module_import_interface (SCM module, SCM sym); SCM_API SCM scm_module_import_interface (SCM module, SCM sym);
SCM_API SCM scm_module_lookup_closure (SCM module);
SCM_API SCM scm_module_transformer (SCM module); SCM_API SCM scm_module_transformer (SCM module);
SCM_API SCM scm_current_module_lookup_closure (void);
SCM_API SCM scm_current_module_transformer (void); SCM_API SCM scm_current_module_transformer (void);
SCM_API SCM scm_eval_closure_lookup (SCM eclo, SCM sym, SCM definep);
SCM_API SCM scm_standard_eval_closure (SCM module);
SCM_API SCM scm_standard_interface_eval_closure (SCM module);
SCM_API SCM scm_eval_closure_module (SCM eval_closure); /* deprecated already */
SCM_API SCM scm_get_pre_modules_obarray (void); SCM_API SCM scm_get_pre_modules_obarray (void);
SCM_API SCM scm_lookup_closure_module (SCM proc);
SCM_INTERNAL void scm_modules_prehistory (void); SCM_INTERNAL void scm_modules_prehistory (void);
SCM_INTERNAL void scm_init_modules (void); SCM_INTERNAL void scm_init_modules (void);

View file

@ -1412,9 +1412,7 @@ VM_DEFINE_INSTRUCTION (84, define, "define", 0, 0, 2)
SCM sym, val; SCM sym, val;
POP2 (sym, val); POP2 (sym, val);
SYNC_REGISTER (); SYNC_REGISTER ();
VARIABLE_SET (scm_sym2var (sym, scm_current_module_lookup_closure (), scm_define (sym, val);
SCM_BOOL_T),
val);
NEXT; NEXT;
} }

View file

@ -611,17 +611,10 @@ resolve_variable (SCM what, SCM program_module)
{ {
if (SCM_LIKELY (scm_is_symbol (what))) if (SCM_LIKELY (scm_is_symbol (what)))
{ {
if (SCM_LIKELY (scm_is_true (program_module))) if (scm_is_true (program_module))
/* might longjmp */
return scm_module_lookup (program_module, what); return scm_module_lookup (program_module, what);
else else
{ return scm_module_lookup (scm_the_root_module (), what);
SCM v = scm_sym2var (what, SCM_BOOL_F, SCM_BOOL_F);
if (scm_is_false (v))
scm_misc_error (NULL, "unbound variable: ~S", scm_list_1 (what));
else
return v;
}
} }
else else
{ {

View file

@ -1839,55 +1839,7 @@ written into the port is returned."
;;; Every module object is of the type 'module-type', which is a record ;;; Every module object is of the type 'module-type', which is a record
;;; consisting of the following members: ;;; consisting of the following members:
;;; ;;;
;;; - eval-closure: the function that defines for its module the strategy that ;;; - eval-closure: A deprecated field, to be removed in Guile 2.2.
;;; shall be followed when looking up symbols in the module.
;;;
;;; An eval-closure is a function taking two arguments: the symbol to be
;;; looked up and a boolean value telling whether a binding for the symbol
;;; should be created if it does not exist yet. If the symbol lookup
;;; succeeded (either because an existing binding was found or because a new
;;; binding was created), a variable object representing the binding is
;;; returned. Otherwise, the value #f is returned. Note that the eval
;;; closure does not take the module to be searched as an argument: During
;;; construction of the eval-closure, the eval-closure has to store the
;;; module it belongs to in its environment. This means, that any
;;; eval-closure can belong to only one module.
;;;
;;; The eval-closure of a module can be defined arbitrarily. However, three
;;; special cases of eval-closures are to be distinguished: During startup
;;; the module system is not yet activated. In this phase, no modules are
;;; defined and all bindings are automatically stored by the system in the
;;; pre-modules-obarray. Since no eval-closures exist at this time, the
;;; functions which require an eval-closure as their argument need to be
;;; passed the value #f.
;;;
;;; The other two special cases of eval-closures are the
;;; standard-eval-closure and the standard-interface-eval-closure. Both
;;; behave equally for the case that no new binding is to be created. The
;;; difference between the two comes in, when the boolean argument to the
;;; eval-closure indicates that a new binding shall be created if it is not
;;; found.
;;;
;;; Given that no new binding shall be created, both standard eval-closures
;;; define the following standard strategy of searching bindings in the
;;; module: First, the module's obarray is searched for the symbol. Second,
;;; if no binding for the symbol was found in the module's obarray, the
;;; module's binder procedure is exececuted. If this procedure did not
;;; return a binding for the symbol, the modules referenced in the module's
;;; uses list are recursively searched for a binding of the symbol. If the
;;; binding can not be found in these modules also, the symbol lookup has
;;; failed.
;;;
;;; If a new binding shall be created, the standard-interface-eval-closure
;;; immediately returns indicating failure. That is, it does not even try
;;; to look up the symbol. In contrast, the standard-eval-closure would
;;; first search the obarray, and if no binding was found there, would
;;; create a new binding in the obarray, therefore not calling the binder
;;; procedure or searching the modules in the uses list.
;;;
;;; The explanation of the following members obarray, binder and uses
;;; assumes that the symbol lookup follows the strategy that is defined in
;;; the standard-eval-closure and the standard-interface-eval-closure.
;;; ;;;
;;; - obarray: a hash table that maps symbols to variable objects. In this ;;; - obarray: a hash table that maps symbols to variable objects. In this
;;; hash table, the definitions are found that are local to the module (that ;;; hash table, the definitions are found that are local to the module (that
@ -2095,7 +2047,6 @@ written into the port is returned."
;; NOTE: If you change the set of fields or their order, you also need to ;; NOTE: If you change the set of fields or their order, you also need to
;; change the constants in libguile/modules.h. ;; change the constants in libguile/modules.h.
;; ;;
;; NOTE: The getter `module-eval-closure' is used in libguile/modules.c.
;; NOTE: The getter `module-transfomer' is defined libguile/modules.c. ;; NOTE: The getter `module-transfomer' is defined libguile/modules.c.
;; NOTE: The getter `module-name' is defined later, due to boot reasons. ;; NOTE: The getter `module-name' is defined later, due to boot reasons.
;; NOTE: The getter `module-public-interface' is used in libguile/modules.c. ;; NOTE: The getter `module-public-interface' is used in libguile/modules.c.
@ -2135,20 +2086,13 @@ written into the port is returned."
(error (error
"Lazy-binder expected to be a procedure or #f." binder)) "Lazy-binder expected to be a procedure or #f." binder))
(let ((module (module-constructor (make-hash-table size) (module-constructor (make-hash-table size)
uses binder #f macroexpand uses binder #f macroexpand
#f #f #f #f #f #f
(make-hash-table) (make-hash-table)
'() '()
(make-weak-key-hash-table 31) #f (make-weak-key-hash-table 31) #f
(make-hash-table 7) #f #f #f))) (make-hash-table 7) #f #f #f))
;; We can't pass this as an argument to module-constructor,
;; because we need it to close over a pointer to the module
;; itself.
(set-module-eval-closure! module (standard-eval-closure module))
module))
@ -2715,9 +2659,6 @@ written into the port is returned."
;;; better thought of as a root. ;;; better thought of as a root.
;;; ;;;
(define (set-system-module! m s)
(set-procedure-property! (module-eval-closure m) 'system-module s))
;; The root module uses the pre-modules-obarray as its obarray. This ;; The root module uses the pre-modules-obarray as its obarray. This
;; special obarray accumulates all bindings that have been established ;; special obarray accumulates all bindings that have been established
;; before the module system is fully booted. ;; before the module system is fully booted.
@ -2729,7 +2670,6 @@ written into the port is returned."
(let ((m (make-module 0))) (let ((m (make-module 0)))
(set-module-obarray! m (%get-pre-modules-obarray)) (set-module-obarray! m (%get-pre-modules-obarray))
(set-module-name! m '(guile)) (set-module-name! m '(guile))
(set-system-module! m #t)
m)) m))
;; The root interface is a module that uses the same obarray as the ;; The root interface is a module that uses the same obarray as the
@ -2738,10 +2678,8 @@ written into the port is returned."
(define the-scm-module (define the-scm-module
(let ((m (make-module 0))) (let ((m (make-module 0)))
(set-module-obarray! m (%get-pre-modules-obarray)) (set-module-obarray! m (%get-pre-modules-obarray))
(set-module-eval-closure! m (standard-interface-eval-closure m))
(set-module-name! m '(guile)) (set-module-name! m '(guile))
(set-module-kind! m 'interface) (set-module-kind! m 'interface)
(set-system-module! m #t)
;; In Guile 1.8 and earlier M was its own public interface. ;; In Guile 1.8 and earlier M was its own public interface.
(set-module-public-interface! m m) (set-module-public-interface! m m)

View file

@ -1,4 +1,4 @@
;;;; Copyright (C) 2003, 2005, 2006, 2009, 2010, 2011 Free Software Foundation, Inc. ;;;; Copyright (C) 2003, 2005, 2006, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
;;;; ;;;;
;;;; This library is free software; you can redistribute it and/or ;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public ;;;; modify it under the terms of the GNU Lesser General Public

View file

@ -1,4 +1,4 @@
;;;; Copyright (C) 1999, 2000, 2001, 2003, 2006, 2008 Free Software Foundation, Inc. ;;;; Copyright (C) 1999, 2000, 2001, 2003, 2006, 2008, 2012 Free Software Foundation, Inc.
;;;; ;;;;
;;;; This library is free software; you can redistribute it and/or ;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public ;;;; modify it under the terms of the GNU Lesser General Public
@ -17,7 +17,7 @@
(define-module (oop goops util) (define-module (oop goops util)
:export (mapappend find-duplicate top-level-env top-level-env? :export (mapappend find-duplicate
map* for-each* length* improper->proper) map* for-each* length* improper->proper)
:use-module (srfi srfi-1) :use-module (srfi srfi-1)
:re-export (any every) :re-export (any every)
@ -37,16 +37,6 @@
((memv (car l) (cdr l)) (car l)) ((memv (car l) (cdr l)) (car l))
(else (find-duplicate (cdr l))))) (else (find-duplicate (cdr l)))))
(define (top-level-env)
(let ((mod (current-module)))
(if mod
(module-eval-closure mod)
'())))
(define (top-level-env? env)
(or (null? env)
(procedure? (car env))))
(define (map* fn . l) ; A map which accepts dotted lists (arg lists (define (map* fn . l) ; A map which accepts dotted lists (arg lists
(cond ; must be "isomorph" (cond ; must be "isomorph"
((null? (car l)) '()) ((null? (car l)) '())