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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "mojo/public/c/bindings/map.h" | |
| 6 | |
| 7 struct MojomMapLayout { | |
| 8 struct MojomStructHeader header_; | |
| 9 union MojomArrayHeaderPtr keys; | |
| 10 union MojomArrayHeaderPtr values; | |
| 11 }; | |
| 12 MOJO_STATIC_ASSERT(sizeof(struct MojomMapLayout) == 24u, | |
| 13 "MojomMapLayout is an invalid size."); | |
| 14 | |
| 15 MojomValidationResult MojomMap_Validate( | |
| 16 const struct MojomTypeDescriptorStruct* in_type_desc, | |
| 17 const struct MojomStructHeader* in_struct, | |
| 18 uint32_t in_buf_size, | |
| 19 uint32_t in_num_handles, | |
| 20 struct MojomValidationContext* inout_context) { | |
| 21 // A mojom map consists of 2 arrays (pointers), both of equal size. | |
| 22 const struct MojomMapLayout* map = (const struct MojomMapLayout*)in_struct; | |
| 23 struct MojomArrayHeader* keys_arr = | |
| 24 (struct MojomArrayHeader*)((char*)map + | |
| 25 (offsetof(struct MojomMapLayout, keys) + | |
| 26 map->keys.offset)); | |
| 27 struct MojomArrayHeader* values_arr = | |
| 28 (struct MojomArrayHeader*)((char*)map + | |
| 29 (offsetof(struct MojomMapLayout, values) + | |
| 30 map->values.offset)); | |
| 31 | |
| 32 if (keys_arr->num_elements != values_arr->num_elements) | |
| 33 return MOJOM_VALIDATION_DIFFERENT_SIZED_ARRAYS_IN_MAP; | |
| 34 | |
| 35 return MOJOM_VALIDATION_ERROR_NONE; | |
| 36 } | |
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