hashmap.h extension

Our extension of the hashmap module. More...

Data Structures
struct	map_tuple
	A struct to store a key-value pair. More...

Functions
int	hashmap_put_tuple (struct hashmap_s *const m, const char *const key, const hashmap_uint32_t len, PyObject *py_key, PyObject *value)
	Put a key-value pair into the hashmap.
struct map_tuple *	hashmap_pop_tuple (struct hashmap_s *const m, const char *const key, const hashmap_uint32_t len)
	Remove a value from the hashmap.
void	hashmap_destroy_tuple (struct hashmap_s *m)
	Destroy a hashmap, assuming the values are map_tuples.
void	hashmap_destroy_py (struct hashmap_s *m)
	Destroy a hashmap, assuming the values are PyObjects.

Detailed Description

Our extension of the hashmap module.

Since the Python dict object proved far too hermetic for our shenanigans we had to use a third-part hashmap library. We settled on https://github.com/sheredom/hashmap.h, and this module extends that library

Function Documentation

hashmap_destroy_py()

void hashmap_destroy_py

(

struct hashmap_s *

m

)

Destroy a hashmap, assuming the values are PyObjects.

Parameters

m	the hashmap to destroy

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hashmap_destroy_tuple()

void hashmap_destroy_tuple

(

struct hashmap_s *

m

)

Destroy a hashmap, assuming the values are map_tuples.

Parameters

m	the hashmap to destroy

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hashmap_pop_tuple()

struct map_tuple * hashmap_pop_tuple	(	struct hashmap_s *const	m,
		const char *const	key,
		const hashmap_uint32_t	len
	)

Remove a value from the hashmap.

Parameters

m	the hashmap to remove the value from
key	the key to remove the value for
len	the length of the key

Returns

the removed value or NULL if not found

Warning

You must free the returned value, and decrement the reference count of the key and value

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hashmap_put_tuple()

int hashmap_put_tuple	(	struct hashmap_s *const	m,
		const char *const	key,
		const hashmap_uint32_t	len,
		PyObject *	py_key,
		PyObject *	value
	)

Put a key-value pair into the hashmap.

Parameters

m	the hashmap to put the pair into
key	the key to put
len	the length of the key
py_key	the Python key object
value	the value to put

Returns

0 on success, 1 on failure

Note

This funciton will increment the reference count of the key and value