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author | Jim Blandy <jimb@red-bean.com> | 1996-07-25 22:56:11 +0000 |
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committer | Jim Blandy <jimb@red-bean.com> | 1996-07-25 22:56:11 +0000 |
commit | 0f2d19dd46f83f41177f61d585732b32a866d613 (patch) | |
tree | 86bf67b8c05d36d8181d393e7d706785a74ee777 /libguile/weaks.c | |
download | guile-0f2d19dd46f83f41177f61d585732b32a866d613.tar.gz |
maintainer changed: was lord, now jimb; first import
Diffstat (limited to 'libguile/weaks.c')
-rw-r--r-- | libguile/weaks.c | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/libguile/weaks.c b/libguile/weaks.c new file mode 100644 index 000000000..8479d76f5 --- /dev/null +++ b/libguile/weaks.c @@ -0,0 +1,242 @@ +/* Copyright (C) 1995,1996 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, 675 Mass Ave, Cambridge, MA 02139, USA. + * + * As a special exception, Free Software Foundation gives permission + * for additional uses of the text contained in its release of this library. + * + * The exception is that, if you link this 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 this 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 + * Free Software Foundation as part of this library. If you copy + * code from other releases distributed under the terms of the GPL into a copy of + * this library, 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 such code. + * + * If you write modifications of your own for this library, it is your choice + * whether to permit this exception to apply to your modifications. + * If you do not wish that, delete this exception notice. + */ + +#include <stdio.h> +#include "_scm.h" + + + + +/* {Weak Vectors} + */ + + +SCM_PROC(s_make_weak_vector, "make-weak-vector", 1, 1, 0, scm_make_weak_vector); +#ifdef __STDC__ +SCM +scm_make_weak_vector (SCM k, SCM fill) +#else +SCM +scm_make_weak_vector (k, fill) + SCM k; + SCM fill; +#endif +{ + SCM v; + v = scm_make_vector (scm_sum (k, SCM_MAKINUM (1)), fill, SCM_UNDEFINED); + SCM_DEFER_INTS; + SCM_SETLENGTH(v, SCM_INUM (k), scm_tc7_wvect); + SCM_VELTS(v)[0] = (SCM)0; + SCM_SETVELTS(v, SCM_VELTS(v) + 1); + SCM_ALLOW_INTS; + return v; +} + + +SCM_PROC(s_weak_vector, "weak-vector", 0, 0, 1, scm_weak_vector); +SCM_PROC(s_list_to_weak_vector, "list->weak-vector", 1, 0, 0, scm_weak_vector); +#ifdef __STDC__ +SCM +scm_weak_vector (SCM l) +#else +SCM +scm_weak_vector (l) + SCM l; +#endif +{ + SCM res; + register SCM *data; + long i; + + i = scm_ilength (l); + SCM_ASSERT (i >= 0, l, SCM_ARG1, s_weak_vector); + res = scm_make_weak_vector (SCM_MAKINUM (i), SCM_UNSPECIFIED); + data = SCM_VELTS (res); + for (; + i && SCM_NIMP (l) && SCM_CONSP (l); + --i, l = SCM_CDR (l)) + *data++ = SCM_CAR (l); + return res; +} + + +SCM_PROC(s_weak_vector_p, "weak-vector?", 1, 0, 0, scm_weak_vector_p); +#ifdef __STDC__ +SCM +scm_weak_vector_p (SCM x) +#else +SCM +scm_weak_vector_p (x) + SCM x; +#endif +{ + return ((SCM_NIMP (x) && SCM_WVECTP (x) && !SCM_IS_WHVEC (x)) + ? SCM_BOOL_T + : SCM_BOOL_F); +} + + + + + + + +SCM_PROC(s_make_weak_hash_table, "make-weak-hash-table", 1, 0, 0, scm_make_weak_hash_table); +#ifdef __STDC__ +SCM +scm_make_weak_hash_table (SCM k) +#else +SCM +scm_make_weak_hash_table (k) + SCM k; +#endif +{ + SCM v; + SCM_ASSERT (SCM_INUMP (k), k, SCM_ARG1, s_make_weak_hash_table); + v = scm_make_weak_vector (k, SCM_EOL); + SCM_ALLOW_INTS; + SCM_VELTS (v)[-1] = 1; + SCM_ALLOW_INTS; + return v; +} + + +SCM_PROC (s_make_weak_value_hash_table, "make-weak-value-hash-table", 1, 0, 0, scm_make_weak_value_hash_table); +#ifdef __STDC__ +SCM +scm_make_weak_value_hash_table (SCM k) +#else +SCM +scm_make_weak_value_hash_table (k) + SCM k; +#endif +{ + SCM v; + SCM_ASSERT (SCM_INUMP (k), k, SCM_ARG1, s_make_weak_value_hash_table); + v = scm_make_weak_vector (k, SCM_EOL); + SCM_ALLOW_INTS; + SCM_VELTS (v)[-1] = 2; + SCM_ALLOW_INTS; + return v; +} + + + +SCM_PROC (s_make_doubly_weak_hash_table, "make-doubly-weak-hash-table", 1, 0, 0, scm_make_doubly_weak_hash_table); +#ifdef __STDC__ +SCM +scm_make_doubly_weak_hash_table (SCM k) +#else +SCM +scm_make_doubly_weak_hash_table (k) + SCM k; +#endif +{ + SCM v; + SCM_ASSERT (SCM_INUMP (k), k, SCM_ARG1, s_make_weak_value_hash_table); + v = scm_make_weak_vector (k, SCM_EOL); + SCM_ALLOW_INTS; + SCM_VELTS (v)[-1] = 3; + SCM_ALLOW_INTS; + return v; +} + +SCM_PROC(s_weak_hash_table_p, "weak-hash-table?", 1, 0, 0, scm_weak_hash_table_p); +#ifdef __STDC__ +SCM +scm_weak_hash_table_p (SCM x) +#else +SCM +scm_weak_hash_table_p (x) + SCM x; +#endif +{ + return ((SCM_NIMP (x) && SCM_WVECTP (x) && SCM_IS_WHVEC(x)) + ? SCM_BOOL_T + : SCM_BOOL_F); +} + + +SCM_PROC (s_weak_value_hash_table_p, "weak-value-hash-table?", 1, 0, 0, scm_weak_value_hash_table_p); +#ifdef __STDC__ +SCM +scm_weak_value_hash_table_p (SCM x) +#else +SCM +scm_weak_value_hash_table_p (x) + SCM x; +#endif +{ + return ((SCM_NIMP (x) && SCM_WVECTP (x) && SCM_IS_WHVEC_V(x)) + ? SCM_BOOL_T + : SCM_BOOL_F); +} + + +SCM_PROC (s_doubly_weak_hash_table_p, "doubly-weak-hash-table?", 1, 0, 0, scm_doubly_weak_hash_table_p); +#ifdef __STDC__ +SCM +scm_doubly_weak_hash_table_p (SCM x) +#else +SCM +scm_doubly_weak_hash_table_p (x) + SCM x; +#endif +{ + return ((SCM_NIMP (x) && SCM_WVECTP (x) && SCM_IS_WHVEC_B (x)) + ? SCM_BOOL_T + : SCM_BOOL_F); +} + + + + +#ifdef __STDC__ +void +scm_init_weaks (void) +#else +void +scm_init_weaks () +#endif +{ +#include "weaks.x" +} + |