-/* Copyright (C) 1995, 1996, 1999, 2000 Free Software Foundation, Inc.
+/* Copyright (C) 1995,1996,1999,2000,2001 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
SCM scm_no_applicable_method;
-SCM (*scm_make_extended_class) (char *type_name);
-void (*scm_make_port_classes) (int ptobnum, char *type_name);
-void (*scm_change_object_class) (SCM, SCM, SCM);
-
/* This function is used for efficient type dispatch. */
-SCM
-scm_class_of (SCM x)
+SCM_DEFINE (scm_class_of, "class-of", 1, 0, 0,
+ (SCM x),
+ "Return the class of @var{x}.")
+#define FUNC_NAME s_scm_class_of
{
switch (SCM_ITAG3 (x))
{
return scm_class_pair;
case scm_tcs_closures:
return scm_class_procedure;
- case scm_tcs_symbols:
+ case scm_tc7_symbol:
return scm_class_symbol;
case scm_tc7_vector:
case scm_tc7_wvect:
case scm_tc7_smob:
{
- long type = SCM_TYP16 (x);
+ scm_t_bits type = SCM_TYP16 (x);
if (type != scm_tc16_port_with_ps)
return scm_smob_class[SCM_TC2SMOBNUM (type)];
x = SCM_PORT_WITH_PS_PORT (x);
{
/* ordinary struct */
SCM handle = scm_struct_create_handle (SCM_STRUCT_VTABLE (x));
- if (SCM_NFALSEP (SCM_STRUCT_TABLE_CLASS (SCM_CDR (handle))))
+ if (!SCM_FALSEP (SCM_STRUCT_TABLE_CLASS (SCM_CDR (handle))))
return SCM_STRUCT_TABLE_CLASS (SCM_CDR (handle));
else
{
SCM name = SCM_STRUCT_TABLE_NAME (SCM_CDR (handle));
- SCM class = scm_make_extended_class (SCM_NFALSEP (name)
- ? SCM_ROCHARS (name)
+ SCM class = scm_make_extended_class (!SCM_FALSEP (name)
+ ? SCM_SYMBOL_CHARS (name)
: 0);
SCM_SET_STRUCT_TABLE_CLASS (SCM_CDR (handle), class);
return class;
}
return scm_class_unknown;
}
+#undef FUNC_NAME
-/* (SCM_IM_DISPATCH ARGS N-SPECIALIZED
+/* The cache argument for scm_mcache_lookup_cmethod has one of two possible
+ * formats:
+ *
+ * Format #1:
+ * (SCM_IM_DISPATCH ARGS N-SPECIALIZED
* #((TYPE1 ... ENV FORMALS FORM ...) ...)
* GF)
*
+ * Format #2:
* (SCM_IM_HASH_DISPATCH ARGS N-SPECIALIZED HASHSET MASK
* #((TYPE1 ... ENV FORMALS FORM ...) ...)
* GF)
SCM
scm_mcache_lookup_cmethod (SCM cache, SCM args)
{
- int i, n, end, mask;
+ long i, n, end, mask;
SCM ls, methods, z = SCM_CDDR (cache);
n = SCM_INUM (SCM_CAR (z)); /* maximum number of specializers */
methods = SCM_CADR (z);
- if (SCM_NIMP (methods))
+ if (SCM_INUMP (methods))
{
- /* Prepare for linear search */
- mask = -1;
- i = 0;
- end = SCM_LENGTH (methods);
- }
- else
- {
- /* Compute a hash value */
- int hashset = SCM_INUM (methods);
- int j = n;
- mask = SCM_INUM (SCM_CAR (z = SCM_CDDR (z)));
+ /* cache format #2: compute a hash value */
+ long hashset = SCM_INUM (methods);
+ long j = n;
+ z = SCM_CDDR (z);
+ mask = SCM_INUM (SCM_CAR (z));
methods = SCM_CADR (z);
i = 0;
ls = args;
- if (SCM_NIMP (ls))
+ if (!SCM_NULLP (ls))
do
{
i += SCM_STRUCT_DATA (scm_class_of (SCM_CAR (ls)))
[scm_si_hashsets + hashset];
ls = SCM_CDR (ls);
}
- while (--j && SCM_NIMP (ls));
+ while (j-- && !SCM_NULLP (ls));
i &= mask;
end = i;
}
+ else /* SCM_VECTORP (methods) */
+ {
+ /* cache format #1: prepare for linear search */
+ mask = -1;
+ i = 0;
+ end = SCM_VECTOR_LENGTH (methods);
+ }
/* Search for match */
do
{
- int j = n;
+ long j = n;
z = SCM_VELTS (methods)[i];
ls = args; /* list of arguments */
- if (SCM_NIMP (ls))
+ if (!SCM_NULLP (ls))
do
{
/* More arguments than specifiers => CLASS != ENV */
ls = SCM_CDR (ls);
z = SCM_CDR (z);
}
- while (--j && SCM_NIMP (ls));
+ while (j-- && !SCM_NULLP (ls));
/* Fewer arguments than specifiers => CAR != ENV */
- if (!(SCM_IMP (SCM_CAR (z)) || SCM_CONSP (SCM_CAR (z))))
- goto next_method;
- return z;
+ if (SCM_NULLP (SCM_CAR (z)) || SCM_CONSP (SCM_CAR (z)))
+ return z;
next_method:
i = (i + 1) & mask;
} while (i != end);
scm_mcache_compute_cmethod (SCM cache, SCM args)
{
SCM cmethod = scm_mcache_lookup_cmethod (cache, args);
- if (SCM_IMP (cmethod))
+ if (SCM_FALSEP (cmethod))
/* No match - memoize */
return scm_memoize_method (cache, args);
return cmethod;
SCM_DEFINE (scm_entity_p, "entity?", 1, 0, 0,
(SCM obj),
-"")
+ "Return @code{#t} if @var{obj} is an entity.")
#define FUNC_NAME s_scm_entity_p
{
return SCM_BOOL(SCM_STRUCTP (obj) && SCM_I_ENTITYP (obj));
SCM_DEFINE (scm_operator_p, "operator?", 1, 0, 0,
(SCM obj),
-"")
+ "Return @code{#t} if @var{obj} is an operator.")
#define FUNC_NAME s_scm_operator_p
{
return SCM_BOOL(SCM_STRUCTP (obj)
}
#undef FUNC_NAME
+/* XXX - What code requires the object procedure to be only of certain
+ types? */
+
+SCM_DEFINE (scm_valid_object_procedure_p, "valid-object-procedure?", 1, 0, 0,
+ (SCM proc),
+ "Return @code{#t} iff @var{proc} is a procedure that can be used "
+ "with @code{set-object-procedure}. It is always valid to use "
+ "a closure constructed by @code{lambda}.")
+#define FUNC_NAME s_scm_valid_object_procedure_p
+{
+ if (SCM_IMP (proc))
+ return SCM_BOOL_F;
+ switch (SCM_TYP7 (proc))
+ {
+ default:
+ return SCM_BOOL_F;
+ case scm_tcs_closures:
+ case scm_tc7_subr_1:
+ case scm_tc7_subr_2:
+ case scm_tc7_subr_3:
+ case scm_tc7_lsubr_2:
+ return SCM_BOOL_T;
+ }
+}
+#undef FUNC_NAME
+
SCM_DEFINE (scm_set_object_procedure_x, "set-object-procedure!", 2, 0, 0,
(SCM obj, SCM proc),
-"")
+ "Set the object procedure of @var{obj} to @var{proc}.\n"
+ "@var{obj} must be either an entity or an operator.")
#define FUNC_NAME s_scm_set_object_procedure_x
{
SCM_ASSERT (SCM_STRUCTP (obj)
obj,
SCM_ARG1,
FUNC_NAME);
- SCM_VALIDATE_PROC (2,proc);
+ SCM_ASSERT (scm_valid_object_procedure_p (proc), proc, SCM_ARG2, FUNC_NAME);
if (SCM_I_ENTITYP (obj))
SCM_SET_ENTITY_PROCEDURE (obj, proc);
else
#ifdef GUILE_DEBUG
SCM_DEFINE (scm_object_procedure, "object-procedure", 1, 0, 0,
(SCM obj),
-"")
+ "Return the object procedure of @var{obj}. @var{obj} must be\n"
+ "an entity or an operator.")
#define FUNC_NAME s_scm_object_procedure
{
SCM_ASSERT (SCM_STRUCTP (obj)
SCM_DEFINE (scm_make_class_object, "make-class-object", 2, 0, 0,
(SCM metaclass, SCM layout),
-"")
+ "Create a new class object of class @var{metaclass}, with the\n"
+ "slot layout specified by @var{layout}.")
#define FUNC_NAME s_scm_make_class_object
{
unsigned long flags = 0;
SCM_DEFINE (scm_make_subclass_object, "make-subclass-object", 2, 0, 0,
(SCM class, SCM layout),
-"")
+ "Create a subclass object of @var{class}, with the slot layout\n"
+ "specified by @var{layout}.")
#define FUNC_NAME s_scm_make_subclass_object
{
SCM pl;
SCM_VALIDATE_STRING (2,layout);
pl = SCM_PACK (SCM_STRUCT_DATA (class) [scm_vtable_index_layout]);
/* Convert symbol->string */
- pl = scm_makfromstr (SCM_CHARS (pl), (scm_sizet) SCM_LENGTH (pl), 0);
+ pl = scm_mem2string (SCM_SYMBOL_CHARS (pl), SCM_SYMBOL_LENGTH (pl));
return scm_i_make_class_object (SCM_STRUCT_VTABLE (class),
scm_string_append (SCM_LIST2 (pl, layout)),
SCM_CLASS_FLAGS (class));
scm_init_objects ()
{
SCM ms = scm_makfrom0str (SCM_METACLASS_STANDARD_LAYOUT);
- SCM ml = scm_make_struct_layout (ms);
- SCM mt = scm_make_vtable_vtable (ml, SCM_INUM0,
+ SCM mt = scm_make_vtable_vtable (ms, SCM_INUM0,
SCM_LIST3 (SCM_BOOL_F, SCM_EOL, SCM_EOL));
SCM os = scm_makfrom0str (SCM_METACLASS_OPERATOR_LAYOUT);
- SCM ol = scm_make_struct_layout (os);
- SCM ot = scm_make_vtable_vtable (ol, SCM_INUM0,
+ SCM ot = scm_make_vtable_vtable (os, SCM_INUM0,
SCM_LIST3 (SCM_BOOL_F, SCM_EOL, SCM_EOL));
SCM es = scm_makfrom0str (SCM_ENTITY_LAYOUT);
SCM et = scm_make_struct (mt, SCM_INUM0,
SCM_LIST4 (el, SCM_BOOL_F, SCM_EOL, SCM_EOL));
- scm_sysintern ("<class>", mt);
+ scm_c_define ("<class>", mt);
scm_metaclass_standard = mt;
- scm_sysintern ("<operator-class>", ot);
+ scm_c_define ("<operator-class>", ot);
scm_metaclass_operator = ot;
SCM_SET_CLASS_FLAGS (et, SCM_CLASSF_OPERATOR | SCM_CLASSF_ENTITY);
SCM_SET_CLASS_DESTRUCTOR (et, scm_struct_free_entity);
- scm_sysintern ("<entity>", et);
+ scm_c_define ("<entity>", et);
+#ifndef SCM_MAGIC_SNARFER
#include "libguile/objects.x"
+#endif
}
/*
HCoop / bpt / guile.git / blobdiff