-/* Copyright (C) 1995, 1996, 1997, 1999 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
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this software; see the file COPYING. If not, write to
- * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
- * Boston, MA 02111-1307 USA
- *
- * As a special exception, the Free Software Foundation gives permission
- * for additional uses of the text contained in its release of GUILE.
- *
- * The exception is that, if you link the GUILE library with other files
- * to produce an executable, this does not by itself cause the
- * resulting executable to be covered by the GNU General Public License.
- * Your use of that executable is in no way restricted on account of
- * linking the GUILE library code into it.
- *
- * This exception does not however invalidate any other reasons why
- * the executable file might be covered by the GNU General Public License.
- *
- * This exception applies only to the code released by the
- * Free Software Foundation under the name GUILE. If you copy
- * code from other Free Software Foundation releases into a copy of
- * GUILE, as the General Public License permits, the exception does
- * not apply to the code that you add in this way. To avoid misleading
- * anyone as to the status of such modified files, you must delete
- * this exception notice from them.
- *
- * If you write modifications of your own for GUILE, it is your choice
- * whether to permit this exception to apply to your modifications.
- * If you do not wish that, delete this exception notice. */
-
-/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
- gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
-
-\f
-
-#include <stdio.h>
-#include "_scm.h"
-
-#include "objects.h"
-
-#include "scm_validate.h"
-#include "procs.h"
-\f
-
-
-/* {Procedures}
- */
-
-scm_subr_entry *scm_subr_table;
-
-/* libguile contained approx. 700 primitive procedures on 24 Aug 1999. */
-
-int scm_subr_table_size = 0;
-int scm_subr_table_room = 750;
-
-SCM
-scm_make_subr_opt (const char *name, int type, SCM (*fcn) (), int set)
-{
- SCM symcell;
- register SCM z;
- int entry;
-
- if (scm_subr_table_size == scm_subr_table_room)
- {
- scm_sizet new_size = scm_subr_table_room * 3 / 2;
- void *new_table
- = scm_must_realloc ((char *) scm_subr_table,
- sizeof (scm_subr_entry) * scm_subr_table_room,
- sizeof (scm_subr_entry) * new_size,
- "scm_make_subr_opt");
- scm_subr_table = new_table;
- scm_subr_table_room = new_size;
- }
-
- SCM_NEWCELL (z);
- symcell = set ? scm_sysintern0 (name) : scm_intern0 (name);
-
- entry = scm_subr_table_size;
- scm_subr_table[entry].handle = z;
- scm_subr_table[entry].name = SCM_CAR (symcell);
- scm_subr_table[entry].generic = 0;
- scm_subr_table[entry].properties = SCM_EOL;
- scm_subr_table[entry].documentation = SCM_BOOL_F;
-
- SCM_SUBRF (z) = fcn;
- SCM_SETCAR (z, (entry << 8) + type);
- scm_subr_table_size++;
-
- if (set)
- SCM_SETCDR (symcell, z);
-
- return z;
-}
-
-/* This function isn't currently used since subrs are never freed. */
-/* *fixme* Need mutex here. */
-void
-scm_free_subr_entry (SCM subr)
-{
- int 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_make_subr (const char *name, int type, SCM (*fcn) ())
-{
- return scm_make_subr_opt (name, type, fcn, 1);
-}
-
-SCM
-scm_make_subr_with_generic (const char *name, int type, SCM (*fcn) (), SCM *gf)
-{
- SCM subr = scm_make_subr_opt (name, type, fcn, 1);
- scm_subr_table[scm_subr_table_size - 1].generic = gf;
- return subr;
-}
-
-void
-scm_mark_subr_table ()
-{
- int i;
- for (i = 0; i < scm_subr_table_size; ++i)
- {
- SCM_SETGC8MARK (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);
- if (SCM_NIMP (scm_subr_table[i].documentation))
- scm_gc_mark (scm_subr_table[i].documentation);
- }
-}
-
-
-#ifdef CCLO
-SCM
-scm_makcclo (SCM proc, long len)
-{
- SCM s;
- SCM_NEWCELL (s);
- SCM_DEFER_INTS;
- SCM_SETCHARS (s, scm_must_malloc (len * sizeof (SCM), "compiled-closure"));
- SCM_SETLENGTH (s, len, scm_tc7_cclo);
- while (--len)
- SCM_VELTS (s)[len] = SCM_UNSPECIFIED;
- SCM_CCLO_SUBR (s) = proc;
- SCM_ALLOW_INTS;
- return s;
-}
-
-/* Undocumented debugging procedure */
-#ifdef GUILE_DEBUG
-GUILE_PROC (scm_make_cclo, "make-cclo", 2, 0, 0,
- (SCM proc, SCM len),
-"")
-#define FUNC_NAME s_scm_make_cclo
-{
- return scm_makcclo (proc, SCM_INUM (len));
-}
-#undef FUNC_NAME
-#endif
-#endif
-
-
-
-GUILE_PROC(scm_procedure_p, "procedure?", 1, 0, 0,
- (SCM obj),
-"")
-#define FUNC_NAME s_scm_procedure_p
-{
- if (SCM_NIMP (obj))
- switch (SCM_TYP7 (obj))
- {
- case scm_tcs_cons_gloc:
- if (!SCM_I_OPERATORP (obj))
- break;
- case scm_tcs_closures:
- case scm_tc7_contin:
- case scm_tcs_subrs:
-#ifdef CCLO
- case scm_tc7_cclo:
-#endif
- case scm_tc7_pws:
- return SCM_BOOL_T;
- default:
- return SCM_BOOL_F;
- }
- return SCM_BOOL_F;
-}
-#undef FUNC_NAME
-
-GUILE_PROC(scm_closure_p, "closure?", 1, 0, 0,
- (SCM obj),
-"")
-#define FUNC_NAME s_scm_closure_p
-{
- return SCM_BOOL(SCM_NIMP (obj) && SCM_CLOSUREP (obj));
-}
-#undef FUNC_NAME
-
-GUILE_PROC(scm_thunk_p, "thunk?", 1, 0, 0,
- (SCM obj),
-"")
-#define FUNC_NAME s_scm_thunk_p
-{
- if (SCM_NIMP (obj))
- {
- again:
- switch (SCM_TYP7 (obj))
- {
- case scm_tcs_closures:
- if (SCM_NULLP (SCM_CAR (SCM_CODE (obj))))
- return SCM_BOOL_T;
- 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:
- ;
- }
- }
- 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;
-}
-
-GUILE_PROC(scm_procedure_documentation, "procedure-documentation", 1, 0, 0,
- (SCM proc),
-"")
-#define FUNC_NAME s_scm_procedure_documentation
-{
- SCM code;
- SCM_ASSERT (SCM_BOOL_T == scm_procedure_p (proc) && SCM_NIMP (proc) && SCM_TYP7 (proc) != scm_tc7_contin,
- proc, SCM_ARG1, FUNC_NAME);
- switch (SCM_TYP7 (proc))
- {
- case scm_tcs_closures:
- code = SCM_CDR (SCM_CODE (proc));
- if (SCM_IMP (SCM_CDR (code)))
- return SCM_BOOL_F;
- code = SCM_CAR (code);
- if (SCM_IMP (code))
- return SCM_BOOL_F;
- if (SCM_STRINGP (code))
- return code;
- default:
- return SCM_BOOL_F;
-/*
- case scm_tcs_subrs:
-#ifdef CCLO
- case scm_tc7_cclo:
-#endif
-*/
- }
-}
-#undef FUNC_NAME
-
-
-/* Procedure-with-setter
- */
-
-GUILE_PROC (scm_procedure_with_setter_p, "procedure-with-setter?", 1, 0, 0,
- (SCM obj),
-"")
-#define FUNC_NAME s_scm_procedure_with_setter_p
-{
- return SCM_BOOL(SCM_NIMP (obj) && SCM_PROCEDURE_WITH_SETTER_P (obj));
-}
-#undef FUNC_NAME
-
-GUILE_PROC (scm_make_procedure_with_setter, "make-procedure-with-setter", 2, 0, 0,
- (SCM procedure, SCM setter),
-"")
-#define FUNC_NAME s_scm_make_procedure_with_setter
-{
- SCM z;
- SCM_VALIDATE_PROC(1,procedure);
- SCM_VALIDATE_PROC(2,setter);
- SCM_NEWCELL (z);
- SCM_ENTER_A_SECTION;
- SCM_SETCDR (z, scm_cons (procedure, setter));
- SCM_SETCAR (z, scm_tc7_pws);
- SCM_EXIT_A_SECTION;
- return z;
-}
-#undef FUNC_NAME
-
-GUILE_PROC (scm_procedure, "procedure", 1, 0, 0,
- (SCM proc),
-"")
-#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 0; /* 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 0;
-}
-
-
-void
-scm_init_iprocs(const scm_iproc *subra, int type)
-{
- for(;subra->scm_string; subra++)
- scm_make_subr(subra->scm_string,
- type,
- subra->cproc);
-}
-
-
-void
-scm_init_subr_table ()
-{
- scm_subr_table
- = ((scm_subr_entry *)
- scm_must_malloc (sizeof (scm_subr_entry) * scm_subr_table_room,
- "scm_subr_table"));
-}
-
-void
-scm_init_procs ()
-{
-#include "procs.x"
-}
+/* Copyright (C) 1995,1996,1997,1999,2000,2001, 2006, 2008, 2009 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
+scm_c_make_subr (const char *name, long type, SCM (*fcn) ())
+{
+ register SCM z;
+ SCM *meta_info;
+
+ meta_info = scm_gc_malloc (2 * sizeof (*meta_info), "subr meta-info");
+ meta_info[0] = scm_from_locale_symbol (name);
+ meta_info[1] = SCM_EOL; /* properties */
+
+ z = scm_double_cell ((scm_t_bits) type, (scm_t_bits) fcn,
+ 0 /* generic */, (scm_t_bits) meta_info);
+
+ 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_SNAME (subr), 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)
+{
+ scm_gc_free (SCM_SUBR_META_INFO (subr), 2 * sizeof (SCM),
+ "subr meta-info");
+}
+
+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_SET_SUBR_GENERIC_LOC (subr, 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_SNAME (subr), subr);
+ return subr;
+}
+
+
+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:
+ 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:
+ return SCM_BOOL_T;
+ case scm_tc7_gsubr:
+ return scm_from_bool (SCM_GSUBR_REQ (SCM_GSUBR_TYPE (obj)) == 0);
+ 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;
+ }
+}
+#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 */
+}
+
+\f
+void
+scm_init_procs ()
+{
+#include "libguile/procs.x"
+}
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/
HCoop / bpt / guile.git / blobdiff