libgo/runtime/go-string-to-int-array.c

   1 /* go-string-to-int-array.c -- convert a string to an array of ints in Go.
   2
   3    Copyright 2010 The Go Authors. All rights reserved.
   4    Use of this source code is governed by a BSD-style
   5    license that can be found in the LICENSE file.  */
   6
   7 #include "go-alloc.h"
   8 #include "go-string.h"
   9 #include "array.h"
  10 #include "runtime.h"
  11 #include "malloc.h"
  12
  13 struct __go_open_array
  14 __go_string_to_int_array (struct __go_string str)
  15 {
  16   size_t c;
  17   const unsigned char *p;
  18   const unsigned char *pend;
  19   uint32_t *data;
  20   uint32_t *pd;
  21   struct __go_open_array ret;
  22
  23   c = 0;
  24   p = str.__data;
  25   pend = p + str.__length;
  26   while (p < pend)
  27     {
  28       int rune;
  29
  30       ++c;
  31       p += __go_get_rune (p, pend - p, &rune);
  32     }
  33
  34   data = (uint32_t *) runtime_mallocgc (c * sizeof (uint32_t), FlagNoPointers,
  35                                         1, 0);
  36   p = str.__data;
  37   pd = data;
  38   while (p < pend)
  39     {
  40       int rune;
  41
  42       p += __go_get_rune (p, pend - p, &rune);
  43       *pd++ = rune;
  44     }
  45
  46   ret.__values = (void *) data;
  47   ret.__count = c;
  48   ret.__capacity = c;
  49   return ret;
  50 }