/* This file is part of GNU epsilon, a functional language implementation

Copyright (C) 2002 Luca Saiu

GNU epsilon 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.

GNU epsilon 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 epsilon; see the file COPYING.  If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */


/* Code for the s_fttoba instruction */

const word_t* old_array = (word_t*)UNDERUNDERTOP;
const integer_t from = (integer_t)UNDERTOP;
const integer_t to = (integer_t)top;
const integer_t new_array_size = to - from + 1;
const integer_t old_array_size = ((integer_t*)old_array)[0];
word_t* new_array;

/* Check of out-of-bounds condition: */
if((to < from) || (from <= 0) || (to > old_array_size)) // fixed a bug in 2003
  THROW(out_of_bounds_exception, NULL);

/* Allocate array: */
ASSIGN_CREATE_ARRAY(new_array, new_array_size + 1);

/* Store array size: */
new_array[0] = (word_t)new_array_size;

/* Store array content: */
memcpy(new_array + 1,
       old_array + from,
       new_array_size * sizeof(word_t));

/* Emulate pop, pop, pop, push(new_array): */
top = (word_t)new_array;
undertop_stack_pointer -= 2;
