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 "runtime.h"
   8 #include "go-alloc.h"
   9 #include "go-string.h"
  10 #include "array.h"
  11 #include "arch.h"
  12 #include "malloc.h"
  13
  14 struct __go_open_array
  15 __go_string_to_int_array (String str)
  16 {
  17   size_t c;
  18   const unsigned char *p;
  19   const unsigned char *pend;
  20   uint32_t *data;
  21   uint32_t *pd;
  22   struct __go_open_array ret;
  23
  24   c = 0;
  25   p = str.str;
  26   pend = p + str.len;
  27   while (p < pend)
  28     {
  29       int rune;
  30
  31       ++c;
  32       p += __go_get_rune (p, pend - p, &rune);
  33     }
  34
  35   data = (uint32_t *) runtime_mallocgc (c * sizeof (uint32_t), 0,
  36                                         FlagNoScan | FlagNoZero);
  37   p = str.str;
  38   pd = data;
  39   while (p < pend)
  40     {
  41       int rune;
  42
  43       p += __go_get_rune (p, pend - p, &rune);
  44       *pd++ = rune;
  45     }
  46
  47   ret.__values = (void *) data;
  48   ret.__count = c;
  49   ret.__capacity = c;
  50   return ret;
  51 }