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Rename: read_ptr -> idx

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Imbus 2025-08-23 21:06:16 +02:00
parent e07d355da4
commit 12590533a7
1 changed files with 16 additions and 16 deletions
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32
stack.c
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@ -16,10 +16,10 @@
#endif #endif
typedef struct { typedef struct {
uint8_t *buf; //!< Pointer to the internal buffer uint8_t *buf; //!< Pointer to the internal buffer
size_t buf_sz; //!< The length of the allocated buffer, in bytes size_t buf_sz; //!< The length of the allocated buffer, in bytes
size_t read_ptr; //!< Indicates where to read/write size_t idx; //!< Indicates where to read/write
size_t item_sz; //!< The size of the contained item, in bytes size_t item_sz; //!< The size of the contained item, in bytes
} Stack; } Stack;
typedef enum { typedef enum {
@ -38,7 +38,7 @@ MUST_CHECK StackResult stack_push(Stack *stack, const void *value);
MUST_CHECK StackResult stack_pop(Stack *stack, void *dest); MUST_CHECK StackResult stack_pop(Stack *stack, void *dest);
static inline size_t stack_length(Stack *stack) { static inline size_t stack_length(Stack *stack) {
return (stack->read_ptr / stack->item_sz); return (stack->idx / stack->item_sz);
} }
static inline size_t stack_capacity(Stack *stack) { static inline size_t stack_capacity(Stack *stack) {
@ -46,11 +46,11 @@ static inline size_t stack_capacity(Stack *stack) {
} }
static inline bool stack_full(Stack *stack) { static inline bool stack_full(Stack *stack) {
return (stack->buf_sz == stack->read_ptr); return (stack->buf_sz == stack->idx);
} }
static inline bool stack_empty(Stack *stack) { static inline bool stack_empty(Stack *stack) {
return (stack->read_ptr < stack->item_sz); return (stack->idx < stack->item_sz);
} }
#endif // STACK_H #endif // STACK_H
@ -73,7 +73,7 @@ StackResult stack_init_raw(Stack *stack, uint8_t *buf, size_t buf_sz, size_t ite
stack->buf_sz = buf_sz; stack->buf_sz = buf_sz;
stack->item_sz = item_sz; stack->item_sz = item_sz;
stack->read_ptr = 0; stack->idx = 0;
memset(stack->buf, 0, buf_sz); memset(stack->buf, 0, buf_sz);
@ -90,7 +90,7 @@ StackResult stack_resize(Stack *stack, size_t capacity) {
} }
uint8_t *stack_resize_raw(Stack *stack, uint8_t *new_buf, size_t buf_sz) { uint8_t *stack_resize_raw(Stack *stack, uint8_t *new_buf, size_t buf_sz) {
if (stack->read_ptr > buf_sz) if (stack->idx > buf_sz)
return NULL; return NULL;
uint8_t *old_buf = stack->buf; uint8_t *old_buf = stack->buf;
@ -103,21 +103,21 @@ uint8_t *stack_resize_raw(Stack *stack, uint8_t *new_buf, size_t buf_sz) {
} }
StackResult stack_push(Stack *stack, const void *value) { StackResult stack_push(Stack *stack, const void *value) {
if (stack->read_ptr + stack->item_sz > stack->buf_sz) if (stack->idx + stack->item_sz > stack->buf_sz)
return StackFull; return StackFull;
memcpy((char *)stack->buf + stack->read_ptr, value, stack->item_sz); memcpy((char *)stack->buf + stack->idx, value, stack->item_sz);
stack->read_ptr += stack->item_sz; stack->idx += stack->item_sz;
return Ok; return Ok;
} }
StackResult stack_pop(Stack *stack, void *dest) { StackResult stack_pop(Stack *stack, void *dest) {
if (stack->read_ptr < stack->item_sz) if (stack->idx < stack->item_sz)
return StackEmpty; return StackEmpty;
stack->read_ptr -= stack->item_sz; stack->idx -= stack->item_sz;
memcpy(dest, (char *)stack->buf + stack->read_ptr, stack->item_sz); memcpy(dest, (char *)stack->buf + stack->idx, stack->item_sz);
return Ok; return Ok;
} }
@ -128,7 +128,7 @@ StackResult stack_destroy(Stack *stack) {
stack->buf = NULL; stack->buf = NULL;
stack->buf_sz = 0; stack->buf_sz = 0;
stack->item_sz = 0; stack->item_sz = 0;
stack->read_ptr = 0; stack->idx = 0;
return Ok; return Ok;
} }