mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-30 20:00:19 +02:00
341 lines
9.8 KiB
C
341 lines
9.8 KiB
C
/* Copyright (C) 1995,1996,1998,1999,2000,2001 Free Software Foundation, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "libguile/_scm.h"
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#include "libguile/eq.h"
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#include "libguile/root.h"
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#include "libguile/strings.h"
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#include "libguile/lang.h"
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#include "libguile/validate.h"
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#include "libguile/vectors.h"
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#include "libguile/unif.h"
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SCM_DEFINE (scm_vector_p, "vector?", 1, 0, 0,
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(SCM obj),
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"Return @code{#t} if @var{obj} is a vector, otherwise return\n"
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"@code{#f}.")
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#define FUNC_NAME s_scm_vector_p
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{
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return SCM_BOOL (SCM_VECTORP (obj));
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}
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#undef FUNC_NAME
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SCM_GPROC (s_vector_length, "vector-length", 1, 0, 0, scm_vector_length, g_vector_length);
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/* Returns the number of elements in @var{vector} as an exact integer. */
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SCM
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scm_vector_length (SCM v)
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{
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SCM_GASSERT1 (SCM_VECTORP(v),
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g_vector_length, v, SCM_ARG1, s_vector_length);
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return SCM_MAKINUM (SCM_VECTOR_LENGTH (v));
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}
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SCM_REGISTER_PROC (s_list_to_vector, "list->vector", 1, 0, 0, scm_vector);
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/*
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"Return a newly created vector initialized to the elements of"
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"the list @var{list}.\n\n"
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"@lisp\n"
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"(vector->list '#(dah dah didah)) @result{} (dah dah didah)\n"
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"(list->vector '(dididit dah)) @result{} #(dididit dah)\n"
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"@end lisp")
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*/
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SCM_DEFINE (scm_vector, "vector", 0, 0, 1,
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(SCM l),
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"@deffnx {Scheme Procedure} list->vector l\n"
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"Return a newly allocated vector composed of the\n"
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"given arguments. Analogous to @code{list}.\n"
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"\n"
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"@lisp\n"
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"(vector 'a 'b 'c) @result{} #(a b c)\n"
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"@end lisp")
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#define FUNC_NAME s_scm_vector
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{
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SCM res;
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SCM *data;
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long i;
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/* Dirk:FIXME:: In case of multiple threads, the list might get corrupted
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while the vector is being created. */
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SCM_VALIDATE_LIST_COPYLEN (1, l, i);
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res = scm_c_make_vector (i, SCM_UNSPECIFIED);
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/*
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this code doesn't alloc. -- accessing RES is safe.
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*/
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data = SCM_WRITABLE_VELTS (res);
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while (!SCM_NULL_OR_NIL_P (l))
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{
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*data++ = SCM_CAR (l);
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l = SCM_CDR (l);
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}
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return res;
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}
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#undef FUNC_NAME
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SCM_GPROC (s_vector_ref, "vector-ref", 2, 0, 0, scm_vector_ref, g_vector_ref);
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/*
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"@var{k} must be a valid index of @var{vector}.\n"
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"@samp{Vector-ref} returns the contents of element @var{k} of\n"
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"@var{vector}.\n\n"
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"@lisp\n"
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"(vector-ref '#(1 1 2 3 5 8 13 21) 5) @result{} 8\n"
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"(vector-ref '#(1 1 2 3 5 8 13 21)\n"
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" (let ((i (round (* 2 (acos -1)))))\n"
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" (if (inexact? i)\n"
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" (inexact->exact i)\n"
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" i))) @result{} 13\n"
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"@end lisp"
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*/
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SCM
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scm_vector_ref (SCM v, SCM k)
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#define FUNC_NAME s_vector_ref
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{
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SCM_GASSERT2 (SCM_VECTORP (v),
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g_vector_ref, v, k, SCM_ARG1, s_vector_ref);
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SCM_GASSERT2 (SCM_INUMP (k),
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g_vector_ref, v, k, SCM_ARG2, s_vector_ref);
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SCM_ASSERT_RANGE (2, k, SCM_INUM (k) < SCM_VECTOR_LENGTH (v) && SCM_INUM (k) >= 0);
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return SCM_VELTS (v)[(long) SCM_INUM (k)];
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}
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#undef FUNC_NAME
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SCM_GPROC (s_vector_set_x, "vector-set!", 3, 0, 0, scm_vector_set_x, g_vector_set_x);
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/* "@var{k} must be a valid index of @var{vector}.\n"
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"@code{Vector-set!} stores @var{obj} in element @var{k} of @var{vector}.\n"
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"The value returned by @samp{vector-set!} is unspecified.\n"
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"@lisp\n"
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"(let ((vec (vector 0 '(2 2 2 2) "Anna")))\n"
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" (vector-set! vec 1 '("Sue" "Sue"))\n"
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" vec) @result{} #(0 ("Sue" "Sue") "Anna")\n"
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"(vector-set! '#(0 1 2) 1 "doe") @result{} @emph{error} ; constant vector\n"
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"@end lisp"
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*/
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SCM
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scm_vector_set_x (SCM v, SCM k, SCM obj)
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#define FUNC_NAME s_vector_set_x
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{
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SCM_GASSERTn (SCM_VECTORP (v),
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g_vector_set_x, scm_list_3 (v, k, obj),
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SCM_ARG1, s_vector_set_x);
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SCM_GASSERTn (SCM_INUMP (k),
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g_vector_set_x, scm_list_3 (v, k, obj),
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SCM_ARG2, s_vector_set_x);
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SCM_ASSERT_RANGE (2, k, SCM_INUM (k) < SCM_VECTOR_LENGTH (v) && SCM_INUM (k) >= 0);
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SCM_VECTOR_SET (v, (long) SCM_INUM(k), obj);
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return SCM_UNSPECIFIED;
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}
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#undef FUNC_NAME
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SCM_DEFINE (scm_make_vector, "make-vector", 1, 1, 0,
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(SCM k, SCM fill),
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"Return a newly allocated vector of @var{k} elements. If a\n"
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"second argument is given, then each position is initialized to\n"
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"@var{fill}. Otherwise the initial contents of each position is\n"
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"unspecified.")
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#define FUNC_NAME s_scm_make_vector
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{
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if (SCM_UNBNDP (fill))
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fill = SCM_UNSPECIFIED;
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if (SCM_INUMP (k))
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{
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SCM_ASSERT_RANGE (1, k, SCM_INUM (k) >= 0);
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return scm_c_make_vector (SCM_INUM (k), fill);
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}
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else if (SCM_BIGP (k))
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SCM_OUT_OF_RANGE (1, k);
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else
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SCM_WRONG_TYPE_ARG (1, k);
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}
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#undef FUNC_NAME
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SCM
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scm_c_make_vector (unsigned long int k, SCM fill)
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#define FUNC_NAME s_scm_make_vector
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{
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SCM v;
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scm_t_bits *base;
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if (k > 0)
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{
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unsigned long int j;
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SCM_ASSERT_RANGE (1, scm_ulong2num (k), k <= SCM_VECTOR_MAX_LENGTH);
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base = scm_gc_malloc (k * sizeof (scm_t_bits), "vector");
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for (j = 0; j != k; ++j)
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base[j] = SCM_UNPACK (fill);
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}
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else
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base = NULL;
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v = scm_cell (SCM_MAKE_VECTOR_TAG (k, scm_tc7_vector), (scm_t_bits) base);
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scm_remember_upto_here_1 (fill);
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return v;
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}
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#undef FUNC_NAME
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SCM_DEFINE (scm_vector_to_list, "vector->list", 1, 0, 0,
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(SCM v),
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"Return a newly allocated list composed of the elements of @var{v}.\n"
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"\n"
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"@lisp\n"
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"(vector->list '#(dah dah didah)) @result{} (dah dah didah)\n"
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"(list->vector '(dididit dah)) @result{} #(dididit dah)\n"
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"@end lisp")
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#define FUNC_NAME s_scm_vector_to_list
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{
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SCM res = SCM_EOL;
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long i;
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SCM const *data;
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SCM_VALIDATE_VECTOR (1, v);
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data = SCM_VELTS(v);
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for(i = SCM_VECTOR_LENGTH(v)-1;i >= 0;i--) res = scm_cons(data[i], res);
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return res;
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}
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#undef FUNC_NAME
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SCM_DEFINE (scm_vector_fill_x, "vector-fill!", 2, 0, 0,
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(SCM v, SCM fill),
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"Store @var{fill} in every position of @var{vector}. The value\n"
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"returned by @code{vector-fill!} is unspecified.")
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#define FUNC_NAME s_scm_vector_fill_x
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{
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register long i;
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SCM_VALIDATE_VECTOR (1, v);
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for(i = SCM_VECTOR_LENGTH (v) - 1; i >= 0; i--)
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SCM_VECTOR_SET(v, i, fill);
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return SCM_UNSPECIFIED;
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}
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#undef FUNC_NAME
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SCM
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scm_vector_equal_p(SCM x, SCM y)
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{
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long i;
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for(i = SCM_VECTOR_LENGTH (x) - 1; i >= 0; i--)
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if (SCM_FALSEP (scm_equal_p (SCM_VELTS (x)[i], SCM_VELTS (y)[i])))
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return SCM_BOOL_F;
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return SCM_BOOL_T;
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}
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SCM_DEFINE (scm_vector_move_left_x, "vector-move-left!", 5, 0, 0,
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(SCM vec1, SCM start1, SCM end1, SCM vec2, SCM start2),
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"Copy elements from @var{vec1}, positions @var{start1} to @var{end1},\n"
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"to @var{vec2} starting at position @var{start2}. @var{start1} and\n"
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"@var{start2} are inclusive indices; @var{end1} is exclusive.\n\n"
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"@code{vector-move-left!} copies elements in leftmost order.\n"
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"Therefore, in the case where @var{vec1} and @var{vec2} refer to the\n"
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"same vector, @code{vector-move-left!} is usually appropriate when\n"
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"@var{start1} is greater than @var{start2}.")
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#define FUNC_NAME s_scm_vector_move_left_x
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{
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long i;
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long j;
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long e;
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SCM_VALIDATE_VECTOR (1, vec1);
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SCM_VALIDATE_INUM_COPY (2, start1, i);
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SCM_VALIDATE_INUM_COPY (3, end1, e);
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SCM_VALIDATE_VECTOR (4, vec2);
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SCM_VALIDATE_INUM_COPY (5, start2, j);
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SCM_ASSERT_RANGE (2, start1, i <= SCM_VECTOR_LENGTH (vec1) && i >= 0);
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SCM_ASSERT_RANGE (5, start2, j <= SCM_VECTOR_LENGTH (vec2) && j >= 0);
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SCM_ASSERT_RANGE (3, end1, e <= SCM_VECTOR_LENGTH (vec1) && e >= 0);
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SCM_ASSERT_RANGE (5, start2, e-i+j <= SCM_VECTOR_LENGTH (vec2));
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while (i<e)
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{
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SCM_VECTOR_SET (vec2, j, SCM_VELTS (vec1)[i]);
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i++;
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j++;
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}
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return SCM_UNSPECIFIED;
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}
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#undef FUNC_NAME
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SCM_DEFINE (scm_vector_move_right_x, "vector-move-right!", 5, 0, 0,
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(SCM vec1, SCM start1, SCM end1, SCM vec2, SCM start2),
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"Copy elements from @var{vec1}, positions @var{start1} to @var{end1},\n"
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"to @var{vec2} starting at position @var{start2}. @var{start1} and\n"
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"@var{start2} are inclusive indices; @var{end1} is exclusive.\n\n"
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"@code{vector-move-right!} copies elements in rightmost order.\n"
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"Therefore, in the case where @var{vec1} and @var{vec2} refer to the\n"
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"same vector, @code{vector-move-right!} is usually appropriate when\n"
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"@var{start1} is less than @var{start2}.")
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#define FUNC_NAME s_scm_vector_move_right_x
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{
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long i;
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long j;
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long e;
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SCM_VALIDATE_VECTOR (1, vec1);
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SCM_VALIDATE_INUM_COPY (2, start1, i);
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SCM_VALIDATE_INUM_COPY (3, end1, e);
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SCM_VALIDATE_VECTOR (4, vec2);
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SCM_VALIDATE_INUM_COPY (5, start2, j);
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SCM_ASSERT_RANGE (2, start1, i <= SCM_VECTOR_LENGTH (vec1) && i >= 0);
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SCM_ASSERT_RANGE (5, start2, j <= SCM_VECTOR_LENGTH (vec2) && j >= 0);
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SCM_ASSERT_RANGE (3, end1, e <= SCM_VECTOR_LENGTH (vec1) && e >= 0);
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j = e - i + j;
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SCM_ASSERT_RANGE (5, start2, j <= SCM_VECTOR_LENGTH (vec2));
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while (i < e)
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{
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j--;
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e--;
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SCM_VECTOR_SET (vec2, j, SCM_VELTS (vec1)[e]);
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}
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return SCM_UNSPECIFIED;
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}
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#undef FUNC_NAME
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void
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scm_init_vectors ()
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{
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scm_nullvect = scm_c_make_vector (0, SCM_UNDEFINED);
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#include "libguile/vectors.x"
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}
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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