| /* |
| * Copyright (c) 2020 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef PAS_PTR_HASH_MAP_H |
| #define PAS_PTR_HASH_MAP_H |
| |
| #include "pas_hashtable.h" |
| |
| PAS_BEGIN_EXTERN_C; |
| |
| struct pas_ptr_hash_map_entry; |
| typedef struct pas_ptr_hash_map_entry pas_ptr_hash_map_entry; |
| |
| struct pas_ptr_hash_map_entry { |
| void* key; |
| void* value; |
| }; |
| |
| typedef void* pas_ptr_hash_map_key; |
| |
| static inline pas_ptr_hash_map_entry pas_ptr_hash_map_entry_create_empty(void) |
| { |
| pas_ptr_hash_map_entry result; |
| result.key = (void*)UINTPTR_MAX; |
| result.value = NULL; |
| return result; |
| } |
| |
| static inline pas_ptr_hash_map_entry pas_ptr_hash_map_entry_create_deleted(void) |
| { |
| pas_ptr_hash_map_entry result; |
| result.key = (void*)UINTPTR_MAX; |
| result.value = (void*)(uintptr_t)1; |
| return result; |
| } |
| |
| static inline bool pas_ptr_hash_map_entry_is_empty_or_deleted(pas_ptr_hash_map_entry entry) |
| { |
| if (entry.key == (void*)UINTPTR_MAX) { |
| PAS_TESTING_ASSERT(entry.value <= (void*)(uintptr_t)1); |
| return true; |
| } |
| return false; |
| } |
| |
| static inline bool pas_ptr_hash_map_entry_is_empty(pas_ptr_hash_map_entry entry) |
| { |
| return entry.key == (void*)UINTPTR_MAX |
| && !entry.value; |
| } |
| |
| static inline bool pas_ptr_hash_map_entry_is_deleted(pas_ptr_hash_map_entry entry) |
| { |
| return entry.key == (void*)UINTPTR_MAX |
| && entry.value == (void*)(uintptr_t)1; |
| } |
| |
| static inline void* pas_ptr_hash_map_entry_get_key(pas_ptr_hash_map_entry entry) |
| { |
| return entry.key; |
| } |
| |
| static inline unsigned pas_ptr_hash_map_key_get_hash(pas_ptr_hash_map_key key) |
| { |
| return pas_hash_ptr(key); |
| } |
| |
| static inline bool pas_ptr_hash_map_key_is_equal(pas_ptr_hash_map_key a, |
| pas_ptr_hash_map_key b) |
| { |
| return a == b; |
| } |
| |
| PAS_CREATE_HASHTABLE(pas_ptr_hash_map, |
| pas_ptr_hash_map_entry, |
| pas_ptr_hash_map_key); |
| |
| PAS_END_EXTERN_C; |
| |
| #endif /* PAS_PTR_HASH_MAP_H */ |
| |