70 lines
1.5 KiB
Plaintext
70 lines
1.5 KiB
Plaintext
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// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package runtime
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#include "map.h"
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#define nil NULL
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typedef unsigned char byte;
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typedef _Bool bool;
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typedef struct __go_map hmap;
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typedef struct __go_hash_iter hiter;
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/* Access a value in a map, returning a value and a presence indicator. */
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func mapaccess2(h *hmap, key *byte, val *byte) (present bool) {
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byte *mapval;
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size_t valsize;
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mapval = __go_map_index(h, key, 0);
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valsize = h->__descriptor->__map_descriptor->__val_type->__size;
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if (mapval == nil) {
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__builtin_memset(val, 0, valsize);
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present = 0;
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} else {
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__builtin_memcpy(val, mapval, valsize);
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present = 1;
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}
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}
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/* Optionally assign a value to a map (m[k] = v, p). */
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func mapassign2(h *hmap, key *byte, val *byte, p bool) {
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if (!p) {
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__go_map_delete(h, key);
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} else {
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byte *mapval;
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size_t valsize;
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mapval = __go_map_index(h, key, 1);
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valsize = h->__descriptor->__map_descriptor->__val_type->__size;
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__builtin_memcpy(mapval, val, valsize);
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}
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}
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/* Initialize a range over a map. */
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func mapiterinit(h *hmap, it *hiter) {
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__go_mapiterinit(h, it);
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}
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/* Move to the next iteration, updating *HITER. */
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func mapiternext(it *hiter) {
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__go_mapiternext(it);
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}
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/* Get the key of the current iteration. */
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func mapiter1(it *hiter, key *byte) {
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__go_mapiter1(it, key);
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}
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/* Get the key and value of the current iteration. */
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func mapiter2(it *hiter, key *byte, val *byte) {
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__go_mapiter2(it, key, val);
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}
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