--- /dev/null
+/* 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"
+\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 */
+
+long scm_subr_table_size = 0;
+long scm_subr_table_room = 800;
+
+SCM
+scm_c_make_subr (const char *name, long type, SCM (*fcn) ())
+{
+ register SCM z;
+ 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:
+ ;
+ }
+ }
+ 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_VALIDATE_PROC (1, procedure);
+ SCM_VALIDATE_PROC (2, setter);
+ return scm_double_cell (scm_tc7_pws,
+ SCM_UNPACK (procedure),
+ SCM_UNPACK (setter), 0);
+}
+#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:
+*/
projects / lilypond.git / blobdiff