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Add container insert

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doylet
2025-07-16 19:34:28 +10:00
parent 93e54a6e32
commit 6f67864d10
5 changed files with 187 additions and 110 deletions
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Source/Base/dn_base_containers.cpp
+64 -43
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@@ -2,6 +2,70 @@
#include "../dn_base_inc.h"
DN_API void *DN_CArray2_InsertArray(void *data, DN_USize *size, DN_USize max, DN_USize elem_size, DN_USize index, void const *items, DN_USize count)
{
void *result = nullptr;
if (!data || !size || !items || count <= 0 || ((*size + count) > max))
return result;
DN_USize clamped_index = DN_Min(index, *size);
if (clamped_index != *size) {
char const *src = DN_CAST(char *)data + (clamped_index * elem_size);
char const *dest = DN_CAST(char *)data + ((clamped_index + count) * elem_size);
char const *end = DN_CAST(char *)data + (size[0] * elem_size);
DN_USize bytes_to_move = end - src;
DN_Memmove(DN_CAST(void *) dest, src, bytes_to_move);
}
result = DN_CAST(char *)data + (clamped_index * elem_size);
DN_Memcpy(result, items, elem_size * count);
*size += count;
return result;
}
DN_API DN_ArrayEraseResult DN_CArray2_EraseRange(void *data, DN_USize *size, DN_USize elem_size, DN_USize begin_index, DN_ISize count, DN_ArrayErase erase)
{
DN_ArrayEraseResult result = {};
if (!data || !size || *size == 0 || count == 0)
return result;
// Compute the range to erase
DN_USize start = 0, end = 0;
if (count < 0) {
DN_USize abs_count = DN_Abs(count);
start = begin_index >= abs_count ? begin_index - abs_count + 1 : 0;
end = begin_index >= abs_count ? begin_index + 1 : 0;
} else {
start = begin_index;
end = begin_index + count;
}
// Clamp indices to valid bounds
start = DN_Min(start, *size);
end = DN_Min(end, *size);
// Erase the range [start, end)
DN_USize erase_count = end > start ? end - start : 0;
if (erase_count) {
char *dest = (char *)data + (elem_size * start);
char *array_end = (char *)data + (elem_size * *size);
char *src = dest + (elem_size * erase_count);
if (erase == DN_ArrayErase_Stable) {
DN_USize move_size = array_end - src;
DN_Memmove(dest, src, move_size);
} else {
char *unstable_src = array_end - (elem_size * erase_count);
DN_USize move_size = array_end - unstable_src;
DN_Memcpy(dest, unstable_src, move_size);
}
*size -= erase_count;
}
result.items_erased = erase_count;
result.it_index = start;
return result;
}
DN_API void *DN_CArray2_MakeArray(void *data, DN_USize *size, DN_USize max, DN_USize data_size, DN_USize make_size, DN_ZeroMem zero_mem)
{
void *result = nullptr;
@@ -53,49 +117,6 @@ DN_API bool DN_CArray2_GrowIfNeededFromPool(void **data, DN_USize size, DN_USize
return result;
}
DN_API DN_ArrayEraseResult DN_CArray2_EraseRange(void *data, DN_USize *size, DN_USize elem_size, DN_USize begin_index, DN_ISize count, DN_ArrayErase erase)
{
DN_ArrayEraseResult result = {};
if (!data || !size || *size == 0 || count == 0)
return result;
// Compute the range to erase
DN_USize start = 0, end = 0;
if (count < 0) {
DN_USize abs_count = DN_Abs(count);
start = begin_index >= abs_count ? begin_index - abs_count + 1 : 0;
end = begin_index >= abs_count ? begin_index + 1 : 0;
} else {
start = begin_index;
end = begin_index + count;
}
// Clamp indices to valid bounds
start = DN_Min(start, *size);
end = DN_Min(end, *size);
// Erase the range [start, end)
DN_USize erase_count = end > start ? end - start : 0;
if (erase_count) {
char *dest = (char *)data + (elem_size * start);
char *array_end = (char *)data + (elem_size * *size);
char *src = dest + (elem_size * erase_count);
if (erase == DN_ArrayErase_Stable) {
DN_USize move_size = array_end - src;
DN_Memmove(dest, src, move_size);
} else {
char *unstable_src = array_end - (elem_size * erase_count);
DN_USize move_size = array_end - unstable_src;
DN_Memcpy(dest, unstable_src, move_size);
}
*size -= erase_count;
}
result.items_erased = erase_count;
result.it_index = start;
return result;
}
DN_API void *DN_CSLList_Detach(void **link, void **next)
{
void *result = *link;