-/* Copyright (C) 1995,1996,1997,1999,2000,2001, 2006, 2008 Free Software Foundation, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-
-\f
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include "libguile/_scm.h"
-
-#include "libguile/objects.h"
-#include "libguile/strings.h"
-#include "libguile/vectors.h"
-#include "libguile/smob.h"
-#include "libguile/deprecation.h"
-
-#include "libguile/validate.h"
-#include "libguile/procs.h"
-#include "libguile/procprop.h"
-#include "libguile/objcodes.h"
-#include "libguile/programs.h"
-\f
-
-
-/* {Procedures}
- */
-
-scm_t_subr_entry *scm_subr_table;
-
-/* libguile contained approx. 700 primitive procedures on 24 Aug 1999. */
-
-/* Increased to 800 on 2001-05-07 -- Guile now has 779 primitives on
- startup, 786 with guile-readline. 'martin */
-
-static unsigned long scm_subr_table_size = 0;
-static unsigned long scm_subr_table_room = 800;
-
-SCM
-scm_c_make_subr (const char *name, long type, SCM (*fcn) ())
-{
- register SCM z;
- unsigned long entry;
-
- if (scm_subr_table_size == scm_subr_table_room)
- {
- long new_size = scm_subr_table_room * 3 / 2;
- void *new_table
- = scm_realloc ((char *) scm_subr_table,
- sizeof (scm_t_subr_entry) * new_size);
- scm_subr_table = new_table;
- scm_subr_table_room = new_size;
- }
-
- entry = scm_subr_table_size;
- z = scm_cell ((entry << 8) + type, (scm_t_bits) fcn);
- scm_subr_table[entry].handle = z;
- scm_subr_table[entry].name = scm_from_locale_symbol (name);
- scm_subr_table[entry].generic = 0;
- scm_subr_table[entry].properties = SCM_EOL;
- scm_subr_table_size++;
-
- return z;
-}
-
-SCM
-scm_c_define_subr (const char *name, long type, SCM (*fcn) ())
-{
- SCM subr = scm_c_make_subr (name, type, fcn);
- scm_define (SCM_SUBR_ENTRY(subr).name, subr);
- return subr;
-}
-
-/* This function isn't currently used since subrs are never freed. */
-/* *fixme* Need mutex here. */
-void
-scm_free_subr_entry (SCM subr)
-{
- long entry = SCM_SUBRNUM (subr);
- /* Move last entry in table to the free position */
- scm_subr_table[entry] = scm_subr_table[scm_subr_table_size - 1];
- SCM_SET_SUBRNUM (scm_subr_table[entry].handle, entry);
- scm_subr_table_size--;
-}
-
-SCM
-scm_c_make_subr_with_generic (const char *name,
- long type, SCM (*fcn) (), SCM *gf)
-{
- SCM subr = scm_c_make_subr (name, type, fcn);
- SCM_SUBR_ENTRY(subr).generic = gf;
- return subr;
-}
-
-SCM
-scm_c_define_subr_with_generic (const char *name,
- long type, SCM (*fcn) (), SCM *gf)
-{
- SCM subr = scm_c_make_subr_with_generic (name, type, fcn, gf);
- scm_define (SCM_SUBR_ENTRY(subr).name, subr);
- return subr;
-}
-
-void
-scm_mark_subr_table ()
-{
- long i;
- for (i = 0; i < scm_subr_table_size; ++i)
- {
- scm_gc_mark (scm_subr_table[i].name);
- if (scm_subr_table[i].generic && *scm_subr_table[i].generic)
- scm_gc_mark (*scm_subr_table[i].generic);
- if (SCM_NIMP (scm_subr_table[i].properties))
- scm_gc_mark (scm_subr_table[i].properties);
- }
-}
-
-
-#ifdef CCLO
-SCM
-scm_makcclo (SCM proc, size_t len)
-{
- scm_t_bits *base = scm_gc_malloc (len * sizeof (scm_t_bits),
- "compiled closure");
- unsigned long i;
- SCM s;
-
- for (i = 0; i < len; ++i)
- base [i] = SCM_UNPACK (SCM_UNSPECIFIED);
-
- s = scm_cell (SCM_MAKE_CCLO_TAG (len), (scm_t_bits) base);
- SCM_SET_CCLO_SUBR (s, proc);
- return s;
-}
-
-/* Undocumented debugging procedure */
-#ifdef GUILE_DEBUG
-SCM_DEFINE (scm_make_cclo, "make-cclo", 2, 0, 0,
- (SCM proc, SCM len),
- "Create a compiled closure for @var{proc}, which reserves\n"
- "@var{len} objects for its usage.")
-#define FUNC_NAME s_scm_make_cclo
-{
- return scm_makcclo (proc, scm_to_size_t (len));
-}
-#undef FUNC_NAME
-#endif
-#endif
-
-
-
-SCM_DEFINE (scm_procedure_p, "procedure?", 1, 0, 0,
- (SCM obj),
- "Return @code{#t} if @var{obj} is a procedure.")
-#define FUNC_NAME s_scm_procedure_p
-{
- if (SCM_NIMP (obj))
- switch (SCM_TYP7 (obj))
- {
- case scm_tcs_struct:
- if (!SCM_I_OPERATORP (obj))
- break;
- case scm_tcs_closures:
- case scm_tcs_subrs:
-#ifdef CCLO
- case scm_tc7_cclo:
-#endif
- case scm_tc7_pws:
- return SCM_BOOL_T;
- case scm_tc7_smob:
- return scm_from_bool (SCM_SMOB_DESCRIPTOR (obj).apply);
- default:
- return SCM_BOOL_F;
- }
- return SCM_BOOL_F;
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_closure_p, "closure?", 1, 0, 0,
- (SCM obj),
- "Return @code{#t} if @var{obj} is a closure.")
-#define FUNC_NAME s_scm_closure_p
-{
- return scm_from_bool (SCM_CLOSUREP (obj));
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_thunk_p, "thunk?", 1, 0, 0,
- (SCM obj),
- "Return @code{#t} if @var{obj} is a thunk.")
-#define FUNC_NAME s_scm_thunk_p
-{
- if (SCM_NIMP (obj))
- {
- again:
- switch (SCM_TYP7 (obj))
- {
- case scm_tcs_closures:
- return scm_from_bool (!scm_is_pair (SCM_CLOSURE_FORMALS (obj)));
- case scm_tc7_subr_0:
- case scm_tc7_subr_1o:
- case scm_tc7_lsubr:
- case scm_tc7_rpsubr:
- case scm_tc7_asubr:
-#ifdef CCLO
- case scm_tc7_cclo:
-#endif
- return SCM_BOOL_T;
- case scm_tc7_pws:
- obj = SCM_PROCEDURE (obj);
- goto again;
- default:
- if (SCM_PROGRAM_P (obj) && SCM_PROGRAM_DATA (obj)->nargs == 0)
- return SCM_BOOL_T;
- /* otherwise fall through */
- }
- }
- return SCM_BOOL_F;
-}
-#undef FUNC_NAME
-
-/* Only used internally. */
-int
-scm_subr_p (SCM obj)
-{
- if (SCM_NIMP (obj))
- switch (SCM_TYP7 (obj))
- {
- case scm_tcs_subrs:
- return 1;
- default:
- ;
- }
- return 0;
-}
-
-SCM_DEFINE (scm_procedure_documentation, "procedure-documentation", 1, 0, 0,
- (SCM proc),
- "Return the documentation string associated with @code{proc}. By\n"
- "convention, if a procedure contains more than one expression and the\n"
- "first expression is a string constant, that string is assumed to contain\n"
- "documentation for that procedure.")
-#define FUNC_NAME s_scm_procedure_documentation
-{
- SCM code;
- SCM_ASSERT (scm_is_true (scm_procedure_p (proc)),
- proc, SCM_ARG1, FUNC_NAME);
- switch (SCM_TYP7 (proc))
- {
- case scm_tcs_closures:
- code = SCM_CLOSURE_BODY (proc);
- if (scm_is_null (SCM_CDR (code)))
- return SCM_BOOL_F;
- code = SCM_CAR (code);
- if (scm_is_string (code))
- return code;
- else
- return SCM_BOOL_F;
- default:
- return SCM_BOOL_F;
-/*
- case scm_tcs_subrs:
-#ifdef CCLO
- case scm_tc7_cclo:
-#endif
-*/
- }
-}
-#undef FUNC_NAME
-
-
-/* Procedure-with-setter
- */
-
-SCM_DEFINE (scm_procedure_with_setter_p, "procedure-with-setter?", 1, 0, 0,
- (SCM obj),
- "Return @code{#t} if @var{obj} is a procedure with an\n"
- "associated setter procedure.")
-#define FUNC_NAME s_scm_procedure_with_setter_p
-{
- return scm_from_bool(SCM_PROCEDURE_WITH_SETTER_P (obj));
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_make_procedure_with_setter, "make-procedure-with-setter", 2, 0, 0,
- (SCM procedure, SCM setter),
- "Create a new procedure which behaves like @var{procedure}, but\n"
- "with the associated setter @var{setter}.")
-#define FUNC_NAME s_scm_make_procedure_with_setter
-{
- SCM name, ret;
- SCM_VALIDATE_PROC (1, procedure);
- SCM_VALIDATE_PROC (2, setter);
- ret = scm_double_cell (scm_tc7_pws,
- SCM_UNPACK (procedure),
- SCM_UNPACK (setter), 0);
- /* don't use procedure_name, because don't care enough to do a reverse
- lookup */
- switch (SCM_TYP7 (procedure)) {
- case scm_tcs_subrs:
- name = SCM_SNAME (procedure);
- break;
- default:
- name = scm_procedure_property (procedure, scm_sym_name);
- break;
- }
- if (scm_is_true (name))
- scm_set_procedure_property_x (ret, scm_sym_name, name);
- return ret;
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_procedure, "procedure", 1, 0, 0,
- (SCM proc),
- "Return the procedure of @var{proc}, which must be either a\n"
- "procedure with setter, or an operator struct.")
-#define FUNC_NAME s_scm_procedure
-{
- SCM_VALIDATE_NIM (1, proc);
- if (SCM_PROCEDURE_WITH_SETTER_P (proc))
- return SCM_PROCEDURE (proc);
- else if (SCM_STRUCTP (proc))
- {
- SCM_ASSERT (SCM_I_OPERATORP (proc), proc, SCM_ARG1, FUNC_NAME);
- return proc;
- }
- SCM_WRONG_TYPE_ARG (1, proc);
- return SCM_BOOL_F; /* not reached */
-}
-#undef FUNC_NAME
-
-SCM_GPROC (s_setter, "setter", 1, 0, 0, scm_setter, g_setter);
-
-SCM
-scm_setter (SCM proc)
-{
- SCM_GASSERT1 (SCM_NIMP (proc), g_setter, proc, SCM_ARG1, s_setter);
- if (SCM_PROCEDURE_WITH_SETTER_P (proc))
- return SCM_SETTER (proc);
- else if (SCM_STRUCTP (proc))
- {
- SCM setter;
- SCM_GASSERT1 (SCM_I_OPERATORP (proc),
- g_setter, proc, SCM_ARG1, s_setter);
- setter = (SCM_I_ENTITYP (proc)
- ? SCM_ENTITY_SETTER (proc)
- : SCM_OPERATOR_SETTER (proc));
- if (SCM_NIMP (setter))
- return setter;
- /* fall through */
- }
- SCM_WTA_DISPATCH_1 (g_setter, proc, SCM_ARG1, s_setter);
- return SCM_BOOL_F; /* not reached */
-}
-
-
-void
-scm_init_subr_table ()
-{
- scm_subr_table
- = ((scm_t_subr_entry *)
- scm_malloc (sizeof (scm_t_subr_entry) * scm_subr_table_room));
-}
-
-void
-scm_init_procs ()
-{
-#include "libguile/procs.x"
-}
-
-/*
- Local Variables:
- c-file-style: "gnu"
- End:
-*/
+/* Copyright (C) 1995,1996,1997,1999,2000,2001, 2006, 2008, 2009, 2010 Free Software Foundation, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+
+\f
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "libguile/_scm.h"
+
+#include "libguile/strings.h"
+#include "libguile/vectors.h"
+#include "libguile/smob.h"
+#include "libguile/deprecation.h"
+
+#include "libguile/validate.h"
+#include "libguile/procs.h"
+#include "libguile/procprop.h"
+#include "libguile/objcodes.h"
+#include "libguile/programs.h"
+\f
+
+
+/* {Procedures}
+ */
+
+
+SCM_DEFINE (scm_procedure_p, "procedure?", 1, 0, 0,
+ (SCM obj),
+ "Return @code{#t} if @var{obj} is a procedure.")
+#define FUNC_NAME s_scm_procedure_p
+{
+ if (SCM_NIMP (obj))
+ switch (SCM_TYP7 (obj))
+ {
+ case scm_tcs_struct:
+ if (!((SCM_OBJ_CLASS_FLAGS (obj) & SCM_CLASSF_PURE_GENERIC)
+ || SCM_STRUCT_APPLICABLE_P (obj)))
+ break;
+ case scm_tc7_program:
+ return SCM_BOOL_T;
+ case scm_tc7_smob:
+ return scm_from_bool (SCM_SMOB_DESCRIPTOR (obj).apply);
+ default:
+ return SCM_BOOL_F;
+ }
+ return SCM_BOOL_F;
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_thunk_p, "thunk?", 1, 0, 0,
+ (SCM obj),
+ "Return @code{#t} if @var{obj} is a thunk.")
+#define FUNC_NAME s_scm_thunk_p
+{
+ int req, opt, rest;
+ return scm_from_bool (scm_i_procedure_arity (obj, &req, &opt, &rest)
+ && req == 0);
+}
+#undef FUNC_NAME
+
+SCM_SYMBOL (sym_documentation, "documentation");
+
+SCM_DEFINE (scm_procedure_documentation, "procedure-documentation", 1, 0, 0,
+ (SCM proc),
+ "Return the documentation string associated with @code{proc}. By\n"
+ "convention, if a procedure contains more than one expression and the\n"
+ "first expression is a string constant, that string is assumed to contain\n"
+ "documentation for that procedure.")
+#define FUNC_NAME s_scm_procedure_documentation
+{
+ SCM_VALIDATE_PROC (SCM_ARG1, proc);
+ return scm_procedure_property (proc, sym_documentation);
+}
+#undef FUNC_NAME
+
+
+/* Procedure-with-setter
+ */
+
+static SCM pws_vtable;
+
+
+SCM_DEFINE (scm_procedure_with_setter_p, "procedure-with-setter?", 1, 0, 0,
+ (SCM obj),
+ "Return @code{#t} if @var{obj} is a procedure with an\n"
+ "associated setter procedure.")
+#define FUNC_NAME s_scm_procedure_with_setter_p
+{
+ return scm_from_bool (SCM_STRUCTP (obj) && SCM_STRUCT_SETTER_P (obj));
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_make_procedure_with_setter, "make-procedure-with-setter", 2, 0, 0,
+ (SCM procedure, SCM setter),
+ "Create a new procedure which behaves like @var{procedure}, but\n"
+ "with the associated setter @var{setter}.")
+#define FUNC_NAME s_scm_make_procedure_with_setter
+{
+ SCM name, ret;
+ SCM_VALIDATE_PROC (1, procedure);
+ SCM_VALIDATE_PROC (2, setter);
+ ret = scm_make_struct (pws_vtable, SCM_INUM0,
+ scm_list_2 (procedure, setter));
+
+ /* don't use procedure_name, because don't care enough to do a reverse
+ lookup */
+ name = scm_procedure_property (procedure, scm_sym_name);
+ if (scm_is_true (name))
+ scm_set_procedure_property_x (ret, scm_sym_name, name);
+ return ret;
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_procedure, "procedure", 1, 0, 0,
+ (SCM proc),
+ "Return the procedure of @var{proc}, which must be an\n"
+ "applicable struct.")
+#define FUNC_NAME s_scm_procedure
+{
+ SCM_VALIDATE_NIM (1, proc);
+ SCM_ASSERT (SCM_STRUCT_APPLICABLE_P (proc), proc, SCM_ARG1, FUNC_NAME);
+ return SCM_STRUCT_PROCEDURE (proc);
+}
+#undef FUNC_NAME
+
+SCM_PRIMITIVE_GENERIC (scm_setter, "setter", 1, 0, 0,
+ (SCM proc),
+ "Return the setter of @var{proc}, which must be an\n"
+ "applicable struct with a setter.")
+#define FUNC_NAME s_scm_setter
+{
+ SCM_GASSERT1 (SCM_STRUCTP (proc), g_scm_setter, proc, SCM_ARG1, FUNC_NAME);
+ if (SCM_STRUCT_SETTER_P (proc))
+ return SCM_STRUCT_SETTER (proc);
+ if (SCM_PUREGENERICP (proc))
+ /* FIXME: might not be an accessor */
+ return SCM_GENERIC_SETTER (proc);
+ SCM_WTA_DISPATCH_1 (g_scm_setter, proc, SCM_ARG1, FUNC_NAME);
+ return SCM_BOOL_F; /* not reached */
+}
+#undef FUNC_NAME
+
+\f
+void
+scm_init_procs ()
+{
+ pws_vtable =
+ scm_c_make_struct (scm_applicable_struct_with_setter_vtable_vtable,
+ 0,
+ 1,
+ SCM_UNPACK (scm_from_locale_symbol ("pwpw")));
+
+#include "libguile/procs.x"
+}
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/
HCoop / bpt / guile.git / blobdiff