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rmc_list_template.h
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// Copyright (C) 2018, Jaguar Land Rover
// This program is licensed under the terms and conditions of the
// Mozilla Public License, version 2.0. The full text of the
// Mozilla Public License is at https://www.mozilla.org/MPL/2.0/
//
// Author: Magnus Feuer ([email protected])
// Trivial double linked list.
#include <assert.h>
#include <stdlib.h>
#define RMC_LIST_IMPL(LISTTYPE, NODETYPE, DATATYPE) \
static inline NODETYPE* NODETYPE##_rmc_alloc_node(void* user_data) \
{ \
NODETYPE* res = (NODETYPE*) malloc(sizeof(NODETYPE)); \
assert(res); \
return res; \
} \
\
static inline void NODETYPE##_rmc_free_node(NODETYPE* node, void* user_data) \
{ \
assert(node); \
free((void*) node); \
} \
\
void LISTTYPE##_init(LISTTYPE* list, \
void* user_data, \
NODETYPE* (*alloc_node)(void* user_data), \
void (*free_node)(NODETYPE* node, void* user_data)) \
{ \
list->head = 0; \
list->tail = 0; \
list->elem_count = 0; \
list->user_data = user_data; \
list->alloc_node = alloc_node?alloc_node:NODETYPE##_rmc_alloc_node; \
list->free_node = free_node?free_node:NODETYPE##_rmc_free_node; \
} \
\
inline NODETYPE* LISTTYPE##_head(LISTTYPE* list) \
{ \
assert(list); \
\
return list->head; \
} \
\
inline NODETYPE* LISTTYPE##_tail(LISTTYPE* list) \
{ \
assert(list); \
\
return list->tail; \
} \
\
inline NODETYPE* LISTTYPE##_prev(NODETYPE* node) \
{ \
if (node) \
return node->prev; \
\
return 0; \
} \
\
inline NODETYPE* LISTTYPE##_next(NODETYPE* node) \
{ \
if (node) \
return node->next; \
\
return 0; \
} \
\
\
inline uint32_t LISTTYPE##_size(LISTTYPE* list) \
{ \
assert(list); \
\
return list->elem_count; \
} \
\
\
inline NODETYPE* LISTTYPE##_push_head_node(LISTTYPE* owner, NODETYPE* node) \
{ \
assert(owner); \
assert(node); \
\
node->next = owner->head; \
node->prev = 0; \
node->owner = owner; \
\
if (owner->head) \
owner->head->prev = node; \
\
owner->head = node; \
\
if (owner->tail == 0) \
owner->tail = node; \
\
owner->elem_count++; \
return node; \
} \
\
NODETYPE* LISTTYPE##_push_head(LISTTYPE* list, DATATYPE data) \
{ \
NODETYPE* node = (*list->alloc_node)(list->user_data); \
\
assert(node); \
node->data = data; \
return LISTTYPE##_push_head_node(list, node); \
} \
\
inline NODETYPE* LISTTYPE##_push_tail_node(LISTTYPE* owner, NODETYPE* node) \
{ \
assert(owner); \
if (!node) \
assert(node); \
\
node->next = 0; \
node->prev = owner->tail; \
node->owner = owner; \
\
if (owner->tail != 0) \
owner->tail->next = node; \
\
\
owner->tail = node; \
\
if (owner->head == 0) \
owner->head = node; \
\
owner->elem_count++; \
return node; \
} \
\
NODETYPE* LISTTYPE##_push_tail(LISTTYPE* list, DATATYPE data) \
{ \
NODETYPE* node = (*list->alloc_node)(list->user_data); \
\
assert(node); \
node->data = data; \
return LISTTYPE##_push_tail_node(list, node); \
} \
\
inline NODETYPE* LISTTYPE##_insert_before_node(NODETYPE* next, NODETYPE* node) \
{ \
assert(node); \
assert(next != 0); \
assert(next->owner !=0); \
\
if (next == LISTTYPE##_head(next->owner)) \
return LISTTYPE##_push_head_node(next->owner, node); \
\
\
node->owner = next->owner; \
node->prev = next->prev; \
\
node->prev->next = node; \
\
next->prev = node; \
node->next = next; \
\
node->owner->elem_count++; \
return node; \
} \
\
NODETYPE* LISTTYPE##_insert_before(NODETYPE* next, DATATYPE data) \
{ \
NODETYPE* node = (*next->owner->alloc_node)(next->owner->user_data); \
assert(node); \
node->data = data; \
return LISTTYPE##_insert_before_node(next, node); \
} \
\
inline NODETYPE* LISTTYPE##_insert_after_node(NODETYPE* prev, NODETYPE* node) \
{ \
assert(prev != 0); \
assert(prev->owner != 0); \
\
if (prev == LISTTYPE##_tail(prev->owner)) \
return LISTTYPE##_push_tail_node(prev->owner, node); \
\
node->owner = prev->owner; \
node->next = prev->next; \
\
node->next->prev = node; \
\
prev->next = node; \
node->prev = prev; \
\
node->owner->elem_count++; \
return node; \
} \
\
NODETYPE* LISTTYPE##_insert_after(NODETYPE* next, DATATYPE data) \
{ \
NODETYPE* node = (*next->owner->alloc_node)(next->owner->user_data); \
assert(node); \
node->data = data; \
return LISTTYPE##_insert_after_node(next, node); \
} \
\
\
inline NODETYPE* LISTTYPE##_unlink(NODETYPE* node) \
{ \
assert(node); \
assert(node->owner); \
\
if (node->prev) \
node->prev->next = node->next; \
\
if (node->next) \
node->next->prev = node->prev; \
\
if (node->owner->head == node) \
node->owner->head = node->next; \
\
if (node->owner->tail == node) \
node->owner->tail = node->prev; \
\
node->owner->elem_count--; \
node->owner = 0; \
return node; \
} \
\
\
void LISTTYPE##_delete(NODETYPE* node) \
{ \
LISTTYPE* owner = node->owner; \
LISTTYPE##_unlink(node); \
(*owner->free_node)(node, owner->user_data); \
} \
\
\
inline NODETYPE* LISTTYPE##_pop_head_node(LISTTYPE* list) \
{ \
assert(list); \
\
if (!list->head) \
return 0; \
\
return LISTTYPE##_unlink(list->head); \
} \
\
inline int LISTTYPE##_pop_head(LISTTYPE* list, DATATYPE* data) \
{ \
assert(list); \
assert(data); \
\
if (!list->head) \
return 0; \
\
*data = list->head->data; \
\
LISTTYPE##_delete(list->head); \
return 1; \
} \
\
\
inline int LISTTYPE##_pop_tail(LISTTYPE* list, DATATYPE* data) \
{ \
assert(list); \
\
if (!list->tail) \
return 0; \
\
*data = list->tail->data; \
\
LISTTYPE##_delete(list->tail); \
return 1; \
} \
\
inline NODETYPE* LISTTYPE##_pop_tail_node(LISTTYPE* list) \
{ \
assert(list); \
\
if (!list->tail) \
return 0; \
\
\
return LISTTYPE##_unlink(list->tail); \
} \
\
\
void LISTTYPE##_for_each(LISTTYPE* list, \
uint8_t (*func)(NODETYPE* node, void* user_data), \
void* user_data) \
{ \
NODETYPE* node = 0; \
assert(list); \
\
node = list->head; \
while(node && (*func)(node, user_data)) \
node = node->next; \
} \
\
\
void LISTTYPE##_for_each_rev(LISTTYPE* list, \
uint8_t (*func)(NODETYPE* node, void* user_data), \
void* user_data) \
{ \
NODETYPE* node = 0; \
assert(list); \
\
node = list->tail; \
while(node && (*func)(node, user_data)) \
node = node->prev; \
} \
\
\
NODETYPE* LISTTYPE##_find_node(LISTTYPE* list, \
DATATYPE data, \
int (*compare_func)(DATATYPE needle, \
DATATYPE haystack, \
void* user_data), \
void* user_data) \
{ \
NODETYPE* node = 0; \
\
assert(list); \
node = LISTTYPE##_head(list); \
\
while(node) { \
int res = (*compare_func)(data, node->data, user_data); \
\
if (res == -1) \
return 0; \
\
if (res != 0) \
return node; \
\
node = node->next; \
} \
return (NODETYPE*) 0; \
} \
\
NODETYPE* LISTTYPE##_find_node_rev(LISTTYPE* list, \
DATATYPE data, \
int (*compare_func)(DATATYPE needle, \
DATATYPE haystack, \
void* user_data), \
void* user_data) \
{ \
NODETYPE* node = 0; \
\
assert(list); \
node = LISTTYPE##_tail(list); \
\
while(node) { \
int res = (*compare_func)(data, node->data, user_data); \
\
if (res == -1) \
return 0; \
\
if (res != 0) \
return node; \
\
node = node->prev; \
} \
return (NODETYPE*) 0; \
} \
\
\
NODETYPE* LISTTYPE##_insert_sorted_node(LISTTYPE* list, \
NODETYPE* new_node, \
int (*compare_func)(DATATYPE new_elem, \
DATATYPE existing_elem, \
void* user_data), \
void* user_data) \
{ \
NODETYPE* node = 0; \
\
assert(list); \
node = LISTTYPE##_head(list); \
\
while(node) { \
if ((*compare_func)(new_node->data, node->data, user_data) >= 0) { \
return LISTTYPE##_insert_before_node(node, new_node); \
} \
node = LISTTYPE##_next(node); \
} \
\
return LISTTYPE##_push_tail_node(list, new_node); \
} \
\
NODETYPE* LISTTYPE##_insert_sorted_node_rev(LISTTYPE* list, \
NODETYPE* new_node, \
int (*compare_func)(DATATYPE new_elem, \
DATATYPE existing_elem, \
void* user_data), \
void* user_data) \
{ \
NODETYPE* node = 0; \
\
assert(list); \
node = LISTTYPE##_tail(list); \
\
while(node) { \
if ((*compare_func)(new_node->data, node->data, user_data) >= 0) { \
return LISTTYPE##_insert_after_node(node, new_node); \
} \
node = LISTTYPE##_prev(node); \
} \
\
return LISTTYPE##_push_head_node(list, new_node); \
} \
\
\
NODETYPE* LISTTYPE##_insert_sorted(LISTTYPE* list, \
DATATYPE new_elem, \
int (*compare_func)(DATATYPE new_elem, \
DATATYPE existing_elem, \
void* user_data), \
void* user_data) \
{ \
NODETYPE* new_node = 0; \
\
assert(list); \
\
new_node = (*list->alloc_node)(list->user_data); \
assert(new_node); \
\
new_node->data = new_elem; \
return LISTTYPE##_insert_sorted_node(list, new_node, compare_func, user_data); \
} \
\
NODETYPE* LISTTYPE##_insert_sorted_rev(LISTTYPE* list, \
DATATYPE new_elem, \
int (*compare_func)(DATATYPE new_elem, \
DATATYPE existing_elem, \
void* user_data), \
void* user_data) \
{ \
NODETYPE* new_node = 0; \
assert(list); \
\
new_node = (*list->alloc_node)(list->user_data); \
assert(new_node); \
\
new_node->data = new_elem; \
return LISTTYPE##_insert_sorted_node_rev(list, new_node, compare_func, user_data); \
} \
\
inline void LISTTYPE##_empty(LISTTYPE* list) \
{ \
assert(list); \
\
while(LISTTYPE##_size(list)) \
LISTTYPE##_delete(list->head); \
}