libgo/runtime/go-construct-map.c

   1 /* go-construct-map.c -- construct a map from an initializer.
   2
   3    Copyright 2009 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 <stddef.h>
   8 #include <stdlib.h>
   9
  10 #include "map.h"
  11
  12 struct __go_map *
  13 __go_construct_map (const struct __go_map_descriptor *descriptor,
  14                     size_t count, size_t entry_size, size_t val_offset,
  15                     size_t val_size, const void *ventries)
  16 {
  17   struct __go_map *ret;
  18   const unsigned char *entries;
  19   size_t i;
  20
  21   ret = __go_new_map (descriptor, count);
  22
  23   entries = (const unsigned char *) ventries;
  24   for (i = 0; i < count; ++i)
  25     {
  26       void *val = __go_map_index (ret, entries, 1);
  27       __builtin_memcpy (val, entries + val_offset, val_size);
  28       entries += entry_size;
  29     }
  30
  31   return ret;
  32 }