-/* Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+/* Copyright (C) 1999,2000,2001, 2003 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#include "libguile/eval.h"
#include "libguile/gh.h"
#include "libguile/hash.h"
+#include "libguile/list.h"
#include "libguile/ports.h"
#include "libguile/smob.h"
#include "libguile/symbols.h"
\f
-long scm_tc16_environment;
-long scm_tc16_observer;
+scm_t_bits scm_tc16_environment;
+scm_t_bits scm_tc16_observer;
+#define DEFAULT_OBARRAY_SIZE 31
+
+SCM scm_system_environment;
\f
SCM
scm_make_environment (void *type)
{
- SCM env;
-
- SCM_NEWCELL (env);
- SCM_SET_CELL_WORD_1 (env, type);
- SCM_SET_CELL_TYPE (env, scm_tc16_environment);
-
- return env;
+ return scm_cell (scm_tc16_environment, (scm_t_bits) type);
}
SCM_DEFINE (scm_environment_p, "environment?", 1, 0, 0,
(SCM obj),
- "Return #t if OBJ is an environment, or #f otherwise.")
+ "Return @code{#t} if @var{obj} is an environment, or @code{#f}\n"
+ "otherwise.")
#define FUNC_NAME s_scm_environment_p
{
return SCM_BOOL (SCM_ENVIRONMENT_P (obj));
SCM_DEFINE (scm_environment_bound_p, "environment-bound?", 2, 0, 0,
(SCM env, SCM sym),
- "Return #t if SYM is bound in ENV, or #f otherwise.")
+ "Return @code{#t} if @var{sym} is bound in @var{env}, or\n"
+ "@code{#f} otherwise.")
#define FUNC_NAME s_scm_environment_bound_p
{
SCM_ASSERT (SCM_ENVIRONMENT_P (env), env, SCM_ARG1, FUNC_NAME);
SCM_DEFINE (scm_environment_ref, "environment-ref", 2, 0, 0,
(SCM env, SCM sym),
- "Return the value of the location bound to SYM in ENV.\n"
- "If SYM is unbound in ENV, signal an environment:unbound\n"
- "error.")
+ "Return the value of the location bound to @var{sym} in\n"
+ "@var{env}. If @var{sym} is unbound in @var{env}, signal an\n"
+ "@code{environment:unbound} error.")
#define FUNC_NAME s_scm_environment_ref
{
SCM val;
SCM_DEFINE (scm_environment_fold, "environment-fold", 3, 0, 0,
(SCM env, SCM proc, SCM init),
- "Iterate over all the bindings in ENV, accumulating some value.\n"
- "For each binding in ENV, apply PROC to the symbol bound, its\n"
- "value, and the result from the previous application of PROC.\n"
- "Use INIT as PROC's third argument the first time PROC is\n"
- "applied.\n"
- "If ENV contains no bindings, this function simply returns INIT.\n"
- "If ENV binds the symbol sym1 to the value val1, sym2 to val2,\n"
- "and so on, then this procedure computes:\n"
+ "Iterate over all the bindings in @var{env}, accumulating some\n"
+ "value.\n"
+ "For each binding in @var{env}, apply @var{proc} to the symbol\n"
+ "bound, its value, and the result from the previous application\n"
+ "of @var{proc}.\n"
+ "Use @var{init} as @var{proc}'s third argument the first time\n"
+ "@var{proc} is applied.\n"
+ "If @var{env} contains no bindings, this function simply returns\n"
+ "@var{init}.\n"
+ "If @var{env} binds the symbol sym1 to the value val1, sym2 to\n"
+ "val2, and so on, then this procedure computes:\n"
+ "@lisp\n"
" (proc sym1 val1\n"
" (proc sym2 val2\n"
" ...\n"
" (proc symn valn\n"
" init)))\n"
- "Each binding in ENV will be processed exactly once.\n"
- "environment-fold makes no guarantees about the order in which\n"
- "the bindings are processed.\n"
+ "@end lisp\n"
+ "Each binding in @var{env} will be processed exactly once.\n"
+ "@code{environment-fold} makes no guarantees about the order in\n"
+ "which the bindings are processed.\n"
"Here is a function which, given an environment, constructs an\n"
"association list representing that environment's bindings,\n"
"using environment-fold:\n"
+ "@lisp\n"
" (define (environment->alist env)\n"
" (environment-fold env\n"
" (lambda (sym val tail)\n"
" (cons (cons sym val) tail))\n"
- " '()))")
+ " '()))\n"
+ "@end lisp")
#define FUNC_NAME s_scm_environment_fold
{
SCM_ASSERT (SCM_ENVIRONMENT_P (env), env, SCM_ARG1, FUNC_NAME);
SCM_DEFINE (scm_environment_define, "environment-define", 3, 0, 0,
(SCM env, SCM sym, SCM val),
- "Bind SYM to a new location containing VAL in ENV. If SYM is\n"
- "already bound to another location in ENV and the binding is\n"
- "mutable, that binding is replaced. The new binding and\n"
- "location are both mutable. The return value is unspecified.\n"
- "If SYM is already bound in ENV, and the binding is immutable,\n"
- "signal an environment:immutable-binding error.")
+ "Bind @var{sym} to a new location containing @var{val} in\n"
+ "@var{env}. If @var{sym} is already bound to another location\n"
+ "in @var{env} and the binding is mutable, that binding is\n"
+ "replaced. The new binding and location are both mutable. The\n"
+ "return value is unspecified.\n"
+ "If @var{sym} is already bound in @var{env}, and the binding is\n"
+ "immutable, signal an @code{environment:immutable-binding} error.")
#define FUNC_NAME s_scm_environment_define
{
SCM status;
SCM_DEFINE (scm_environment_undefine, "environment-undefine", 2, 0, 0,
(SCM env, SCM sym),
- "Remove any binding for SYM from ENV. If SYM is unbound in ENV,\n"
- "do nothing. The return value is unspecified.\n"
- "If SYM is already bound in ENV, and the binding is immutable,\n"
- "signal an environment:immutable-binding error.")
+ "Remove any binding for @var{sym} from @var{env}. If @var{sym}\n"
+ "is unbound in @var{env}, do nothing. The return value is\n"
+ "unspecified.\n"
+ "If @var{sym} is already bound in @var{env}, and the binding is\n"
+ "immutable, signal an @code{environment:immutable-binding} error.")
#define FUNC_NAME s_scm_environment_undefine
{
SCM status;
SCM_DEFINE (scm_environment_set_x, "environment-set!", 3, 0, 0,
(SCM env, SCM sym, SCM val),
- "If ENV binds SYM to some location, change that location's\n"
- "value to VAL. The return value is unspecified.\n"
- "If SYM is not bound in ENV, signal an environment:unbound\n"
- "error. If ENV binds SYM to an immutable location, signal an\n"
- "environment:immutable-location error.")
+ "If @var{env} binds @var{sym} to some location, change that\n"
+ "location's value to @var{val}. The return value is\n"
+ "unspecified.\n"
+ "If @var{sym} is not bound in @var{env}, signal an\n"
+ "@code{environment:unbound} error. If @var{env} binds @var{sym}\n"
+ "to an immutable location, signal an\n"
+ "@code{environment:immutable-location} error.")
#define FUNC_NAME s_scm_environment_set_x
{
SCM status;
SCM_DEFINE (scm_environment_cell, "environment-cell", 3, 0, 0,
(SCM env, SCM sym, SCM for_write),
- "Return the value cell which ENV binds to SYM, or #f if the\n"
- "binding does not live in a value cell.\n"
- "The argument FOR-WRITE indicates whether the caller intends\n"
- "to modify the variable's value by mutating the value cell. If\n"
- "the variable is immutable, then environment-cell signals an\n"
- "environment:immutable-location error.\n"
- "If SYM is unbound in ENV, signal an environment:unbound error.\n"
+ "Return the value cell which @var{env} binds to @var{sym}, or\n"
+ "@code{#f} if the binding does not live in a value cell.\n"
+ "The argument @var{for-write} indicates whether the caller\n"
+ "intends to modify the variable's value by mutating the value\n"
+ "cell. If the variable is immutable, then\n"
+ "@code{environment-cell} signals an\n"
+ "@code{environment:immutable-location} error.\n"
+ "If @var{sym} is unbound in @var{env}, signal an\n"
+ "@code{environment:unbound} error.\n"
"If you use this function, you should consider using\n"
- "environment-observe, to be notified when SYM gets re-bound to\n"
- "a new value cell, or becomes undefined.")
+ "@code{environment-observe}, to be notified when @var{sym} gets\n"
+ "re-bound to a new value cell, or becomes undefined.")
#define FUNC_NAME s_scm_environment_cell
{
SCM location;
SCM_DEFINE (scm_environment_observe, "environment-observe", 2, 0, 0,
(SCM env, SCM proc),
- "Whenever ENV's bindings change, apply PROC to ENV.\n"
+ "Whenever @var{env}'s bindings change, apply @var{proc} to\n"
+ "@var{env}.\n"
"This function returns an object, token, which you can pass to\n"
- "environment-unobserve to remove PROC from the set of\n"
- "procedures observing ENV. The type and value of token is\n"
- "unspecified.")
+ "@code{environment-unobserve} to remove @var{proc} from the set\n"
+ "of procedures observing @var{env}. The type and value of\n"
+ "token is unspecified.")
#define FUNC_NAME s_scm_environment_observe
{
SCM_ASSERT (SCM_ENVIRONMENT_P (env), env, SCM_ARG1, FUNC_NAME);
SCM_DEFINE (scm_environment_observe_weak, "environment-observe-weak", 2, 0, 0,
(SCM env, SCM proc),
"This function is the same as environment-observe, except that\n"
- "the reference ENV retains to PROC is a weak reference. This\n"
- "means that, if there are no other live, non-weak references\n"
- "to PROC, it will be garbage-collected, and dropped from ENV's\n"
+ "the reference @var{env} retains to @var{proc} is a weak\n"
+ "reference. This means that, if there are no other live,\n"
+ "non-weak references to @var{proc}, it will be\n"
+ "garbage-collected, and dropped from @var{env}'s\n"
"list of observing procedures.")
#define FUNC_NAME s_scm_environment_observe_weak
{
SCM_DEFINE (scm_environment_unobserve, "environment-unobserve", 1, 0, 0,
(SCM token),
"Cancel the observation request which returned the value\n"
- "TOKEN. The return value is unspecified.\n"
- "If a call (environment-observe env proc) returns token, then\n"
- "the call (environment-unobserve token) will cause proc to no\n"
- "longer be called when env's bindings change.")
+ "@var{token}. The return value is unspecified.\n"
+ "If a call @code{(environment-observe env proc)} returns\n"
+ "@var{token}, then the call @code{(environment-unobserve token)}\n"
+ "will cause @var{proc} to no longer be called when @var{env}'s\n"
+ "bindings change.")
#define FUNC_NAME s_scm_environment_unobserve
{
SCM env;
static SCM
-mark_environment (SCM env)
+environment_mark (SCM env)
{
return (*(SCM_ENVIRONMENT_FUNCS (env)->mark)) (env);
}
-static scm_sizet
-free_environment (SCM env)
+static size_t
+environment_free (SCM env)
{
- return (*(SCM_ENVIRONMENT_FUNCS (env)->free)) (env);
+ (*(SCM_ENVIRONMENT_FUNCS (env)->free)) (env);
+ return 0;
}
static int
-print_environment (SCM env, SCM port, scm_print_state *pstate)
+environment_print (SCM env, SCM port, scm_print_state *pstate)
{
return (*(SCM_ENVIRONMENT_FUNCS (env)->print)) (env, port, pstate);
}
/* observers */
static SCM
-mark_observer (SCM observer)
+observer_mark (SCM observer)
{
scm_gc_mark (SCM_OBSERVER_ENVIRONMENT (observer));
scm_gc_mark (SCM_OBSERVER_DATA (observer));
}
-static scm_sizet
-free_observer (SCM observer_smob)
-{
- return 0;
-}
-
-
static int
-print_observer (SCM type, SCM port, scm_print_state *pstate)
+observer_print (SCM type, SCM port, scm_print_state *pstate SCM_UNUSED)
{
SCM address = scm_ulong2num (SCM_UNPACK (type));
SCM base16 = scm_number_to_string (address, SCM_MAKINUM (16));
static SCM
obarray_enter (SCM obarray, SCM symbol, SCM data)
{
- scm_sizet hash = SCM_SYMBOL_HASH (symbol) % SCM_VECTOR_LENGTH (obarray);
+ size_t hash = SCM_SYMBOL_HASH (symbol) % SCM_HASHTABLE_N_BUCKETS (obarray);
SCM entry = scm_cons (symbol, data);
- SCM slot = scm_cons (entry, SCM_VELTS (obarray)[hash]);
- SCM_VELTS (obarray)[hash] = slot;
+ SCM slot = scm_cons (entry, SCM_HASHTABLE_BUCKETS (obarray)[hash]);
+ SCM_SET_HASHTABLE_BUCKET (obarray, hash, slot);
+ if (SCM_HASHTABLE_N_ITEMS (obarray) > SCM_HASHTABLE_UPPER (obarray))
+ scm_i_rehash (obarray, scm_i_hash_symbol, 0, "obarray_enter");
return entry;
}
static SCM
obarray_replace (SCM obarray, SCM symbol, SCM data)
{
- scm_sizet hash = SCM_SYMBOL_HASH (symbol) % SCM_VECTOR_LENGTH (obarray);
+ size_t hash = SCM_SYMBOL_HASH (symbol) % SCM_HASHTABLE_N_BUCKETS (obarray);
SCM new_entry = scm_cons (symbol, data);
SCM lsym;
SCM slot;
- for (lsym = SCM_VELTS (obarray)[hash]; !SCM_NULLP (lsym); lsym = SCM_CDR (lsym))
+ for (lsym = SCM_HASHTABLE_BUCKETS (obarray)[hash];
+ !SCM_NULLP (lsym);
+ lsym = SCM_CDR (lsym))
{
SCM old_entry = SCM_CAR (lsym);
if (SCM_EQ_P (SCM_CAR (old_entry), symbol))
}
}
- slot = scm_cons (new_entry, SCM_VELTS (obarray)[hash]);
- SCM_VELTS (obarray)[hash] = slot;
+ slot = scm_cons (new_entry, SCM_HASHTABLE_BUCKETS (obarray)[hash]);
+ SCM_SET_HASHTABLE_BUCKET (obarray, hash, slot);
+ if (SCM_HASHTABLE_N_ITEMS (obarray) > SCM_HASHTABLE_UPPER (obarray))
+ scm_i_rehash (obarray, scm_i_hash_symbol, 0, "obarray_replace");
return SCM_BOOL_F;
}
static SCM
obarray_retrieve (SCM obarray, SCM sym)
{
- scm_sizet hash = SCM_SYMBOL_HASH (sym) % SCM_VECTOR_LENGTH (obarray);
+ size_t hash = SCM_SYMBOL_HASH (sym) % SCM_HASHTABLE_N_BUCKETS (obarray);
SCM lsym;
- for (lsym = SCM_VELTS (obarray)[hash]; !SCM_NULLP (lsym); lsym = SCM_CDR (lsym))
+ for (lsym = SCM_HASHTABLE_BUCKETS (obarray)[hash];
+ !SCM_NULLP (lsym);
+ lsym = SCM_CDR (lsym))
{
SCM entry = SCM_CAR (lsym);
if (SCM_EQ_P (SCM_CAR (entry), sym))
static SCM
obarray_remove (SCM obarray, SCM sym)
{
- scm_sizet hash = SCM_SYMBOL_HASH (sym) % SCM_VECTOR_LENGTH (obarray);
- SCM lsym;
- SCM *lsymp;
+ size_t hash = SCM_SYMBOL_HASH (sym) % SCM_HASHTABLE_N_BUCKETS (obarray);
+ SCM table_entry = SCM_HASHTABLE_BUCKETS (obarray)[hash];
+ SCM handle = scm_sloppy_assq (sym, table_entry);
- /* Dirk:FIXME:: gc problem due to use of &SCM_VELTS[hash] */
- for (lsym = *(lsymp = &SCM_VELTS (obarray)[hash]);
- !SCM_NULLP (lsym);
- lsym = *(lsymp = SCM_CDRLOC (lsym)))
+ if (SCM_CONSP (handle))
{
- SCM entry = SCM_CAR (lsym);
- if (SCM_EQ_P (SCM_CAR (entry), sym))
- {
- *lsymp = SCM_CDR (lsym);
- return entry;
- }
+ SCM new_table_entry = scm_delq1_x (handle, table_entry);
+ SCM_SET_HASHTABLE_BUCKET (obarray, hash, new_table_entry);
+ SCM_HASHTABLE_DECREMENT (obarray);
}
- return SCM_BOOL_F;
+
+ return handle;
}
static void
obarray_remove_all (SCM obarray)
{
- scm_sizet size = SCM_VECTOR_LENGTH (obarray);
- scm_sizet i;
+ size_t size = SCM_HASHTABLE_N_BUCKETS (obarray);
+ size_t i;
for (i = 0; i < size; i++)
{
- SCM_VELTS (obarray)[i] = SCM_EOL;
+ SCM_SET_HASHTABLE_BUCKET (obarray, i, SCM_EOL);
}
+ SCM_SET_HASHTABLE_N_ITEMS (obarray, 0);
}
\f
#define CORE_ENVIRONMENT_WEAK_OBSERVERS(env) \
(SCM_VELTS (CORE_ENVIRONMENT_WEAK_OBSERVER_VECTOR (env)) [0])
#define SCM_SET_CORE_ENVIRONMENT_WEAK_OBSERVERS(env, v) \
- (SCM_VELTS (CORE_ENVIRONMENT_WEAK_OBSERVER_VECTOR (env)) [0] = (v))
+ (SCM_VECTOR_SET (CORE_ENVIRONMENT_WEAK_OBSERVER_VECTOR (env), 0, (v)))
\f
static SCM
core_environments_observe (SCM env, scm_environment_observer proc, SCM data, int weak_p)
{
- SCM observer;
-
- SCM_NEWCELL2 (observer);
- SCM_SET_CELL_OBJECT_1 (observer, env);
- SCM_SET_CELL_OBJECT_2 (observer, data);
- SCM_SET_CELL_WORD_3 (observer, proc);
- SCM_SET_CELL_TYPE (observer, scm_tc16_observer);
+ SCM observer = scm_double_cell (scm_tc16_observer,
+ SCM_UNPACK (env),
+ SCM_UNPACK (data),
+ (scm_t_bits) proc);
if (!weak_p)
{
static void
-core_environments_finalize (SCM env)
+core_environments_finalize (SCM env SCM_UNUSED)
{
}
{
body->funcs = funcs;
body->observers = SCM_EOL;
- body->weak_observers = scm_make_weak_value_hash_table (SCM_MAKINUM (1));
+ body->weak_observers = scm_make_weak_value_alist_vector (SCM_MAKINUM (1));
}
SCM observer = data->observer;
SCM message = scm_makfrom0str ("Observer `~A' signals `~A' error: ~S");
- return scm_cons (message, scm_listify (observer, tag, args, SCM_UNDEFINED));
+ return scm_cons (message, scm_list_3 (observer, tag, args));
}
static SCM
leaf_environment_fold (SCM env, scm_environment_folder proc, SCM data, SCM init)
{
- scm_sizet i;
+ size_t i;
SCM result = init;
SCM obarray = LEAF_ENVIRONMENT (env)->obarray;
- for (i = 0; i < SCM_VECTOR_LENGTH (obarray); i++)
+ for (i = 0; i < SCM_HASHTABLE_N_BUCKETS (obarray); i++)
{
SCM l;
- for (l = SCM_VELTS (obarray)[i]; !SCM_NULLP (l); l = SCM_CDR (l))
+ for (l = SCM_HASHTABLE_BUCKETS (obarray)[i];
+ !SCM_NULLP (l);
+ l = SCM_CDR (l))
{
SCM binding = SCM_CAR (l);
SCM symbol = SCM_CAR (binding);
static SCM
-leaf_environment_cell(SCM env, SCM sym, int for_write)
+leaf_environment_cell (SCM env, SCM sym, int for_write SCM_UNUSED)
{
SCM obarray = LEAF_ENVIRONMENT (env)->obarray;
SCM binding = obarray_retrieve (obarray, sym);
static SCM
-mark_leaf_environment (SCM env)
+leaf_environment_mark (SCM env)
{
scm_gc_mark (LEAF_ENVIRONMENT (env)->obarray);
return core_environments_mark (env);
}
-static scm_sizet
-free_leaf_environment (SCM env)
+static void
+leaf_environment_free (SCM env)
{
core_environments_finalize (env);
-
- free (LEAF_ENVIRONMENT (env));
- return sizeof (struct leaf_environment);
+ scm_gc_free (LEAF_ENVIRONMENT (env), sizeof (struct leaf_environment),
+ "leaf environment");
}
static int
-print_leaf_environment (SCM type, SCM port, scm_print_state *pstate)
+leaf_environment_print (SCM type, SCM port, scm_print_state *pstate SCM_UNUSED)
{
SCM address = scm_ulong2num (SCM_UNPACK (type));
SCM base16 = scm_number_to_string (address, SCM_MAKINUM (16));
leaf_environment_cell,
core_environments_observe,
core_environments_unobserve,
- mark_leaf_environment,
- free_leaf_environment,
- print_leaf_environment
+ leaf_environment_mark,
+ leaf_environment_free,
+ leaf_environment_print
};
"will be mutable.")
#define FUNC_NAME s_scm_make_leaf_environment
{
- scm_sizet size = sizeof (struct leaf_environment);
- struct leaf_environment *body = scm_must_malloc (size, FUNC_NAME);
+ size_t size = sizeof (struct leaf_environment);
+ struct leaf_environment *body = scm_gc_malloc (size, "leaf environment");
SCM env;
core_environments_preinit (&body->base);
env = scm_make_environment (body);
core_environments_init (&body->base, &leaf_environment_funcs);
- body->obarray = scm_make_vector (SCM_MAKINUM (scm_symhash_dim), SCM_EOL);
+ body->obarray = scm_c_make_hash_table (DEFAULT_OBARRAY_SIZE);
return env;
}
SCM_DEFINE (scm_leaf_environment_p, "leaf-environment?", 1, 0, 0,
(SCM object),
- "Return #t if object is a leaf environment, or #f otherwise.")
+ "Return @code{#t} if object is a leaf environment, or @code{#f}\n"
+ "otherwise.")
#define FUNC_NAME s_scm_leaf_environment_p
{
return SCM_BOOL (SCM_LEAF_ENVIRONMENT_P (object));
if (!SCM_ENVIRONMENT_BOUND_P (local, symbol))
{
SCM proc_as_nr = SCM_CADR (extended_data);
- unsigned long int proc_as_ul = scm_num2ulong (proc_as_nr, NULL, NULL);
+ unsigned long int proc_as_ul = scm_num2ulong (proc_as_nr, 0, NULL);
scm_environment_folder proc = (scm_environment_folder) proc_as_ul;
SCM data = SCM_CDDR (extended_data);
static SCM
-mark_eval_environment (SCM env)
+eval_environment_mark (SCM env)
{
struct eval_environment *body = EVAL_ENVIRONMENT (env);
}
-static scm_sizet
-free_eval_environment (SCM env)
+static void
+eval_environment_free (SCM env)
{
core_environments_finalize (env);
-
- free (EVAL_ENVIRONMENT (env));
- return sizeof (struct eval_environment);
+ scm_gc_free (EVAL_ENVIRONMENT (env), sizeof (struct eval_environment),
+ "eval environment");
}
static int
-print_eval_environment (SCM type, SCM port, scm_print_state *pstate)
+eval_environment_print (SCM type, SCM port, scm_print_state *pstate SCM_UNUSED)
{
SCM address = scm_ulong2num (SCM_UNPACK (type));
SCM base16 = scm_number_to_string (address, SCM_MAKINUM (16));
eval_environment_cell,
core_environments_observe,
core_environments_unobserve,
- mark_eval_environment,
- free_eval_environment,
- print_eval_environment
+ eval_environment_mark,
+ eval_environment_free,
+ eval_environment_print
};
static void
-eval_environment_observer (SCM caller, SCM eval_env)
+eval_environment_observer (SCM caller SCM_UNUSED, SCM eval_env)
{
SCM obarray = EVAL_ENVIRONMENT (eval_env)->obarray;
SCM_DEFINE (scm_make_eval_environment, "make-eval-environment", 2, 0, 0,
(SCM local, SCM imported),
"Return a new environment object eval whose bindings are the\n"
- "union of the bindings in the environments local and imported,\n"
- "with bindings from local taking precedence. Definitions made\n"
- "in eval are placed in local.\n"
- "Applying environment-define or environment-undefine to eval\n"
- "has the same effect as applying the procedure to local.\n"
- "Note that eval incorporates local and imported by reference:\n"
+ "union of the bindings in the environments @var{local} and\n"
+ "@var{imported}, with bindings from @var{local} taking\n"
+ "precedence. Definitions made in eval are placed in @var{local}.\n"
+ "Applying @code{environment-define} or\n"
+ "@code{environment-undefine} to eval has the same effect as\n"
+ "applying the procedure to @var{local}.\n"
+ "Note that eval incorporates @var{local} and @var{imported} by\n"
+ "reference:\n"
"If, after creating eval, the program changes the bindings of\n"
- "local or imported, those changes will be visible in eval.\n"
+ "@var{local} or @var{imported}, those changes will be visible\n"
+ "in eval.\n"
"Since most Scheme evaluation takes place in eval environments,\n"
- "they transparenty cache the bindings received from local and\n"
- "imported. Thus, the first time the program looks up a symbol\n"
- "in eval, eval may make calls to local or imported to find\n"
- "their bindings, but subsequent references to that symbol will\n"
- "be as fast as references to bindings in finite environments.\n"
- "In typical use, local will be a finite environment, and\n"
- "imported will be an import environment")
+ "they transparently cache the bindings received from @var{local}\n"
+ "and @var{imported}. Thus, the first time the program looks up\n"
+ "a symbol in eval, eval may make calls to @var{local} or\n"
+ "@var{imported} to find their bindings, but subsequent\n"
+ "references to that symbol will be as fast as references to\n"
+ "bindings in finite environments.\n"
+ "In typical use, @var{local} will be a finite environment, and\n"
+ "@var{imported} will be an import environment")
#define FUNC_NAME s_scm_make_eval_environment
{
SCM env;
SCM_ASSERT (SCM_ENVIRONMENT_P (local), local, SCM_ARG1, FUNC_NAME);
SCM_ASSERT (SCM_ENVIRONMENT_P (imported), imported, SCM_ARG2, FUNC_NAME);
- body = scm_must_malloc (sizeof (struct eval_environment), FUNC_NAME);
+ body = scm_gc_malloc (sizeof (struct eval_environment), "eval environment");
core_environments_preinit (&body->base);
body->obarray = SCM_BOOL_F;
env = scm_make_environment (body);
core_environments_init (&body->base, &eval_environment_funcs);
- body->obarray = scm_make_vector (SCM_MAKINUM (scm_symhash_dim), SCM_EOL);
+ body->obarray = scm_c_make_hash_table (DEFAULT_OBARRAY_SIZE);
body->imported = imported;
body->imported_observer
= SCM_ENVIRONMENT_OBSERVE (imported, eval_environment_observer, env, 1);
SCM_DEFINE (scm_eval_environment_p, "eval-environment?", 1, 0, 0,
(SCM object),
- "Return #t if object is an eval environment, or #f otherwise.")
+ "Return @code{#t} if object is an eval environment, or @code{#f}\n"
+ "otherwise.")
#define FUNC_NAME s_scm_eval_environment_p
{
return SCM_BOOL (SCM_EVAL_ENVIRONMENT_P (object));
SCM_DEFINE (scm_eval_environment_local, "eval-environment-local", 1, 0, 0,
(SCM env),
- "Return the local environment of eval environment env.")
+ "Return the local environment of eval environment @var{env}.")
#define FUNC_NAME s_scm_eval_environment_local
{
SCM_ASSERT (SCM_EVAL_ENVIRONMENT_P (env), env, SCM_ARG1, FUNC_NAME);
SCM_DEFINE (scm_eval_environment_set_local_x, "eval-environment-set-local!", 2, 0, 0,
(SCM env, SCM local),
- "Change env's local environment to LOCAL.")
+ "Change @var{env}'s local environment to @var{local}.")
#define FUNC_NAME s_scm_eval_environment_set_local_x
{
struct eval_environment *body;
SCM_DEFINE (scm_eval_environment_imported, "eval-environment-imported", 1, 0, 0,
(SCM env),
- "Return the imported environment of eval environment env.")
+ "Return the imported environment of eval environment @var{env}.")
#define FUNC_NAME s_scm_eval_environment_imported
{
SCM_ASSERT (SCM_EVAL_ENVIRONMENT_P (env), env, SCM_ARG1, FUNC_NAME);
SCM_DEFINE (scm_eval_environment_set_imported_x, "eval-environment-set-imported!", 2, 0, 0,
(SCM env, SCM imported),
- "Change env's imported environment to IMPORTED.")
+ "Change @var{env}'s imported environment to @var{imported}.")
#define FUNC_NAME s_scm_eval_environment_set_imported_x
{
struct eval_environment *body;
SCM conflict_proc = IMPORT_ENVIRONMENT (env)->conflict_proc;
SCM args = scm_cons2 (env, sym, scm_cons (imports, SCM_EOL));
- return scm_apply (conflict_proc, args, SCM_EOL);
+ return scm_apply_0 (conflict_proc, args);
}
SCM imported_env = SCM_CADR (extended_data);
SCM owner = import_environment_lookup (import_env, symbol);
SCM proc_as_nr = SCM_CADDR (extended_data);
- unsigned long int proc_as_ul = scm_num2ulong (proc_as_nr, NULL, NULL);
+ unsigned long int proc_as_ul = scm_num2ulong (proc_as_nr, 0, NULL);
scm_environment_folder proc = (scm_environment_folder) proc_as_ul;
SCM data = SCM_CDDDR (extended_data);
static SCM
-import_environment_define (SCM env, SCM sym, SCM val)
+import_environment_define (SCM env SCM_UNUSED,
+ SCM sym SCM_UNUSED,
+ SCM val SCM_UNUSED)
#define FUNC_NAME "import_environment_define"
{
return SCM_ENVIRONMENT_BINDING_IMMUTABLE;
static SCM
-import_environment_undefine (SCM env, SCM sym)
+import_environment_undefine (SCM env SCM_UNUSED,
+ SCM sym SCM_UNUSED)
#define FUNC_NAME "import_environment_undefine"
{
return SCM_ENVIRONMENT_BINDING_IMMUTABLE;
static SCM
-mark_import_environment (SCM env)
+import_environment_mark (SCM env)
{
scm_gc_mark (IMPORT_ENVIRONMENT (env)->imports);
scm_gc_mark (IMPORT_ENVIRONMENT (env)->import_observers);
}
-static scm_sizet
-free_import_environment (SCM env)
+static void
+import_environment_free (SCM env)
{
core_environments_finalize (env);
-
- free (IMPORT_ENVIRONMENT (env));
- return sizeof (struct import_environment);
+ scm_gc_free (IMPORT_ENVIRONMENT (env), sizeof (struct import_environment),
+ "import environment");
}
static int
-print_import_environment (SCM type, SCM port, scm_print_state *pstate)
+import_environment_print (SCM type, SCM port,
+ scm_print_state *pstate SCM_UNUSED)
{
SCM address = scm_ulong2num (SCM_UNPACK (type));
SCM base16 = scm_number_to_string (address, SCM_MAKINUM (16));
import_environment_cell,
core_environments_observe,
core_environments_unobserve,
- mark_import_environment,
- free_import_environment,
- print_import_environment
+ import_environment_mark,
+ import_environment_free,
+ import_environment_print
};
static void
-import_environment_observer (SCM caller, SCM import_env)
+import_environment_observer (SCM caller SCM_UNUSED, SCM import_env)
{
core_environments_broadcast (import_env);
}
SCM_DEFINE (scm_make_import_environment, "make-import-environment", 2, 0, 0,
(SCM imports, SCM conflict_proc),
- "Return a new environment imp whose bindings are the union of\n"
- "the bindings from the environments in imports; imports must\n"
- "be a list of environments. That is, imp binds symbol to\n"
- "location when some element of imports does.\n"
- "If two different elements of imports have a binding for the\n"
- "same symbol, the conflict-proc is called with the following\n"
- "parameters: the import environment, the symbol and the list\n"
- "of the imported environments that bind the symbol. If the\n"
- "conflict-proc returns an environment env, the conflict is\n"
- "considered as resolved and the binding from env is used. If\n"
- "the conflict-proc returns some non-environment object, the\n"
- "conflict is considered unresolved and the symbol is treated\n"
- "as unspecified in the import environment.\n"
- "The checking for conflicts may be performed lazily, i. e. at\m"
+ "Return a new environment @var{imp} whose bindings are the union\n"
+ "of the bindings from the environments in @var{imports};\n"
+ "@var{imports} must be a list of environments. That is,\n"
+ "@var{imp} binds a symbol to a location when some element of\n"
+ "@var{imports} does.\n"
+ "If two different elements of @var{imports} have a binding for\n"
+ "the same symbol, the @var{conflict-proc} is called with the\n"
+ "following parameters: the import environment, the symbol and\n"
+ "the list of the imported environments that bind the symbol.\n"
+ "If the @var{conflict-proc} returns an environment @var{env},\n"
+ "the conflict is considered as resolved and the binding from\n"
+ "@var{env} is used. If the @var{conflict-proc} returns some\n"
+ "non-environment object, the conflict is considered unresolved\n"
+ "and the symbol is treated as unspecified in the import\n"
+ "environment.\n"
+ "The checking for conflicts may be performed lazily, i. e. at\n"
"the moment when a value or binding for a certain symbol is\n"
"requested instead of the moment when the environment is\n"
"created or the bindings of the imports change.\n"
- "All bindings in imp are immutable. If you apply\n"
- "environment-define or environment-undefine to imp, Guile\n"
- "will signal an environment:immutable-binding error. However,\n"
- "notice that the set of bindings in imp may still change, if\n"
- "one of its imported environments changes.")
+ "All bindings in @var{imp} are immutable. If you apply\n"
+ "@code{environment-define} or @code{environment-undefine} to\n"
+ "@var{imp}, Guile will signal an\n"
+ " @code{environment:immutable-binding} error. However,\n"
+ "notice that the set of bindings in @var{imp} may still change,\n"
+ "if one of its imported environments changes.")
#define FUNC_NAME s_scm_make_import_environment
{
- scm_sizet size = sizeof (struct import_environment);
- struct import_environment *body = scm_must_malloc (size, FUNC_NAME);
+ size_t size = sizeof (struct import_environment);
+ struct import_environment *body = scm_gc_malloc (size, "import environment");
SCM env;
core_environments_preinit (&body->base);
SCM_DEFINE (scm_import_environment_p, "import-environment?", 1, 0, 0,
(SCM object),
- "Return #t if object is an import environment, or #f otherwise.")
+ "Return @code{#t} if object is an import environment, or\n"
+ "@code{#f} otherwise.")
#define FUNC_NAME s_scm_import_environment_p
{
return SCM_BOOL (SCM_IMPORT_ENVIRONMENT_P (object));
SCM_DEFINE (scm_import_environment_imports, "import-environment-imports", 1, 0, 0,
(SCM env),
- "Return the list of environments imported by the import environment env.")
+ "Return the list of environments imported by the import\n"
+ "environment @var{env}.")
#define FUNC_NAME s_scm_import_environment_imports
{
SCM_ASSERT (SCM_IMPORT_ENVIRONMENT_P (env), env, SCM_ARG1, FUNC_NAME);
SCM_DEFINE (scm_import_environment_set_imports_x, "import-environment-set-imports!", 2, 0, 0,
(SCM env, SCM imports),
- "Change env's list of imported environments to imports, and check for conflicts.")
+ "Change @var{env}'s list of imported environments to\n"
+ "@var{imports}, and check for conflicts.")
#define FUNC_NAME s_scm_import_environment_set_imports_x
{
struct import_environment *body = IMPORT_ENVIRONMENT (env);
for (l = imports; SCM_CONSP (l); l = SCM_CDR (l))
{
SCM obj = SCM_CAR (l);
- SCM_ASSERT (SCM_ENVIRONMENT_P (obj), imports, SCM_ARG1, FUNC_NAME);
+ SCM_ASSERT (SCM_ENVIRONMENT_P (obj), imports, SCM_ARG2, FUNC_NAME);
}
- SCM_ASSERT (SCM_NULLP (l), imports, SCM_ARG1, FUNC_NAME);
+ SCM_ASSERT (SCM_NULLP (l), imports, SCM_ARG2, FUNC_NAME);
for (l = body->import_observers; !SCM_NULLP (l); l = SCM_CDR (l))
{
static SCM
-export_environment_define (SCM env, SCM sym, SCM val)
+export_environment_define (SCM env SCM_UNUSED,
+ SCM sym SCM_UNUSED,
+ SCM val SCM_UNUSED)
#define FUNC_NAME "export_environment_define"
{
return SCM_ENVIRONMENT_BINDING_IMMUTABLE;
static SCM
-export_environment_undefine (SCM env, SCM sym)
+export_environment_undefine (SCM env SCM_UNUSED, SCM sym SCM_UNUSED)
#define FUNC_NAME "export_environment_undefine"
{
return SCM_ENVIRONMENT_BINDING_IMMUTABLE;
static SCM
-mark_export_environment (SCM env)
+export_environment_mark (SCM env)
{
struct export_environment *body = EXPORT_ENVIRONMENT (env);
}
-static scm_sizet
-free_export_environment (SCM env)
+static void
+export_environment_free (SCM env)
{
core_environments_finalize (env);
-
- free (EXPORT_ENVIRONMENT (env));
- return sizeof (struct export_environment);
+ scm_gc_free (EXPORT_ENVIRONMENT (env), sizeof (struct export_environment),
+ "export environment");
}
static int
-print_export_environment (SCM type, SCM port, scm_print_state *pstate)
+export_environment_print (SCM type, SCM port,
+ scm_print_state *pstate SCM_UNUSED)
{
SCM address = scm_ulong2num (SCM_UNPACK (type));
SCM base16 = scm_number_to_string (address, SCM_MAKINUM (16));
export_environment_cell,
core_environments_observe,
core_environments_unobserve,
- mark_export_environment,
- free_export_environment,
- print_export_environment
+ export_environment_mark,
+ export_environment_free,
+ export_environment_print
};
static void
-export_environment_observer (SCM caller, SCM export_env)
+export_environment_observer (SCM caller SCM_UNUSED, SCM export_env)
{
core_environments_broadcast (export_env);
}
SCM_DEFINE (scm_make_export_environment, "make-export-environment", 2, 0, 0,
(SCM private, SCM signature),
- "Return a new environment exp containing only those bindings\n"
- "in private whose symbols are present in signature. The\n"
- "private argument must be an environment.\n\n"
- "The environment exp binds symbol to location when env does,\n"
- "and symbol is exported by signature.\n\n"
- "Signature is a list specifying which of the bindings in\n"
- "private should be visible in exp. Each element of signature\n"
- "should be a list of the form:\n"
+ "Return a new environment @var{exp} containing only those\n"
+ "bindings in private whose symbols are present in\n"
+ "@var{signature}. The @var{private} argument must be an\n"
+ "environment.\n\n"
+ "The environment @var{exp} binds symbol to location when\n"
+ "@var{env} does, and symbol is exported by @var{signature}.\n\n"
+ "@var{signature} is a list specifying which of the bindings in\n"
+ "@var{private} should be visible in @var{exp}. Each element of\n"
+ "@var{signature} should be a list of the form:\n"
" (symbol attribute ...)\n"
"where each attribute is one of the following:\n"
- "* the symbol mutable-location exp should treat the location\n"
- " bound to symbol as mutable. That is, exp will pass calls\n"
- " to env-set! or environment-cell directly through to\n"
- " private.\n"
- "* the symbol immutable-location exp should treat the\n"
- " location bound to symbol as immutable. If the program\n"
- " applies environment-set! to exp and symbol, or calls\n"
- " environment-cell to obtain a writable value cell,\n"
- " environment-set! will signal an\n"
- " environment:immutable-location error. Note that, even if\n"
- " an export environment treats a location as immutable, the\n"
+ "@table @asis\n"
+ "@item the symbol @code{mutable-location}\n"
+ " @var{exp} should treat the\n"
+ " location bound to symbol as mutable. That is, @var{exp}\n"
+ " will pass calls to @code{environment-set!} or\n"
+ " @code{environment-cell} directly through to private.\n"
+ "@item the symbol @code{immutable-location}\n"
+ " @var{exp} should treat\n"
+ " the location bound to symbol as immutable. If the program\n"
+ " applies @code{environment-set!} to @var{exp} and symbol, or\n"
+ " calls @code{environment-cell} to obtain a writable value\n"
+ " cell, @code{environment-set!} will signal an\n"
+ " @code{environment:immutable-location} error. Note that, even\n"
+ " if an export environment treats a location as immutable, the\n"
" underlying environment may treat it as mutable, so its\n"
" value may change.\n"
+ "@end table\n"
"It is an error for an element of signature to specify both\n"
- "mutable-location and immutable-location. If neither is\n"
- "specified, immutable-location is assumed.\n\n"
+ "@code{mutable-location} and @code{immutable-location}. If\n"
+ "neither is specified, @code{immutable-location} is assumed.\n\n"
"As a special case, if an element of signature is a lone\n"
- "symbol sym, it is equivalent to an element of the form\n"
- "(sym).\n\n"
- "All bindings in exp are immutable. If you apply\n"
- "environment-define or environment-undefine to exp, Guile\n"
- "will signal an environment:immutable-binding error. However,\n"
- "notice that the set of bindings in exp may still change, if\n"
- "the bindings in private change.")
+ "symbol @var{sym}, it is equivalent to an element of the form\n"
+ "@code{(sym)}.\n\n"
+ "All bindings in @var{exp} are immutable. If you apply\n"
+ "@code{environment-define} or @code{environment-undefine} to\n"
+ "@var{exp}, Guile will signal an\n"
+ "@code{environment:immutable-binding} error. However,\n"
+ "notice that the set of bindings in @var{exp} may still change,\n"
+ "if the bindings in private change.")
#define FUNC_NAME s_scm_make_export_environment
{
- scm_sizet size;
+ size_t size;
struct export_environment *body;
SCM env;
SCM_ASSERT (SCM_ENVIRONMENT_P (private), private, SCM_ARG1, FUNC_NAME);
size = sizeof (struct export_environment);
- body = scm_must_malloc (size, FUNC_NAME);
+ body = scm_gc_malloc (size, "export environment");
core_environments_preinit (&body->base);
body->private = SCM_BOOL_F;
SCM_DEFINE (scm_export_environment_p, "export-environment?", 1, 0, 0,
(SCM object),
- "Return #t if object is an export environment, or #f otherwise.")
+ "Return @code{#t} if object is an export environment, or\n"
+ "@code{#f} otherwise.")
#define FUNC_NAME s_scm_export_environment_p
{
return SCM_BOOL (SCM_EXPORT_ENVIRONMENT_P (object));
SCM_DEFINE (scm_export_environment_private, "export-environment-private", 1, 0, 0,
(SCM env),
- "Return the private environment of export environment env.")
+ "Return the private environment of export environment @var{env}.")
#define FUNC_NAME s_scm_export_environment_private
{
SCM_ASSERT (SCM_EXPORT_ENVIRONMENT_P (env), env, SCM_ARG1, FUNC_NAME);
SCM_DEFINE (scm_export_environment_set_private_x, "export-environment-set-private!", 2, 0, 0,
(SCM env, SCM private),
- "Change the private environment of export environment env.")
+ "Change the private environment of export environment @var{env}.")
#define FUNC_NAME s_scm_export_environment_set_private_x
{
struct export_environment *body;
SCM_DEFINE (scm_export_environment_signature, "export-environment-signature", 1, 0, 0,
(SCM env),
- "Return the signature of export environment env.")
+ "Return the signature of export environment @var{env}.")
#define FUNC_NAME s_scm_export_environment_signature
{
SCM_ASSERT (SCM_EXPORT_ENVIRONMENT_P (env), env, SCM_ARG1, FUNC_NAME);
SCM_DEFINE (scm_export_environment_set_signature_x, "export-environment-set-signature!", 2, 0, 0,
(SCM env, SCM signature),
- "Change the signature of export environment env.")
+ "Change the signature of export environment @var{env}.")
#define FUNC_NAME s_scm_export_environment_set_signature_x
{
SCM parsed_sig;
{
/* create environment smob */
scm_tc16_environment = scm_make_smob_type ("environment", 0);
- scm_set_smob_mark (scm_tc16_environment, mark_environment);
- scm_set_smob_free (scm_tc16_environment, free_environment);
- scm_set_smob_print (scm_tc16_environment, print_environment);
+ scm_set_smob_mark (scm_tc16_environment, environment_mark);
+ scm_set_smob_free (scm_tc16_environment, environment_free);
+ scm_set_smob_print (scm_tc16_environment, environment_print);
/* create observer smob */
scm_tc16_observer = scm_make_smob_type ("observer", 0);
- scm_set_smob_mark (scm_tc16_observer, mark_observer);
- scm_set_smob_free (scm_tc16_observer, free_observer);
- scm_set_smob_print (scm_tc16_observer, print_observer);
+ scm_set_smob_mark (scm_tc16_observer, observer_mark);
+ scm_set_smob_print (scm_tc16_observer, observer_print);
+
+ /* create system environment */
+ scm_system_environment = scm_make_leaf_environment ();
+ scm_permanent_object (scm_system_environment);
}
HCoop / bpt / guile.git / blobdiff