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/* SPDX-License-Identifier: GPL-2.0-or-later */
#pragma once
/** \file
* \ingroup bli
*/
#include "BLI_compiler_attrs.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct BLI_Stack BLI_Stack;
BLI_Stack *BLI_stack_new_ex(size_t elem_size,
const char *description,
size_t chunk_size) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL();
/**
* Create a new homogeneous stack with elements of 'elem_size' bytes.
*/
BLI_Stack *BLI_stack_new(size_t elem_size, const char *description) ATTR_WARN_UNUSED_RESULT
ATTR_NONNULL();
/**
* Free the stack's data and the stack itself
*/
void BLI_stack_free(BLI_Stack *stack) ATTR_NONNULL();
/**
* Push a new item onto the stack.
*
* \return a pointer #BLI_Stack.elem_size
* bytes of uninitialized memory (caller must fill in).
*/
void *BLI_stack_push_r(BLI_Stack *stack) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL();
/**
* Copies the source value onto the stack
*
* \note This copies #BLI_Stack.elem_size bytes from \a src,
* (the pointer itself is not stored).
*
* \param src: source data to be copied to the stack.
*/
void BLI_stack_push(BLI_Stack *stack, const void *src) ATTR_NONNULL();
/**
* A version of #BLI_stack_pop which fills in an array.
*
* \param dst: The destination array,
* must be at least (#BLI_Stack.elem_size * \a n) bytes long.
* \param n: The number of items to pop.
*
* \note The first item in the array will be last item added to the stack.
*/
void BLI_stack_pop_n(BLI_Stack *stack, void *dst, unsigned int n) ATTR_NONNULL();
/**
* A version of #BLI_stack_pop_n which fills in an array (in the reverse order).
*
* \note The first item in the array will be first item added to the stack.
*/
void BLI_stack_pop_n_reverse(BLI_Stack *stack, void *dst, unsigned int n) ATTR_NONNULL();
/**
* Retrieves and removes the top element from the stack.
* The value is copies to \a dst, which must be at least \a elem_size bytes.
*
* Does not reduce amount of allocated memory.
*/
void BLI_stack_pop(BLI_Stack *stack, void *dst) ATTR_NONNULL();
void *BLI_stack_peek(BLI_Stack *stack) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL();
/**
* Removes the top element from the stack.
*/
void BLI_stack_discard(BLI_Stack *stack) ATTR_NONNULL();
/**
* Discards all elements without freeing.
*/
void BLI_stack_clear(BLI_Stack *stack) ATTR_NONNULL();
size_t BLI_stack_count(const BLI_Stack *stack) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL();
/**
* Returns true if the stack is empty, false otherwise
*/
bool BLI_stack_is_empty(const BLI_Stack *stack) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL();
#ifdef __cplusplus
}
#endif
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