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gh-132983: Simplify _zstd_exec() #133775

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Merged
AA-Turner merged 6 commits into from
May 9, 2025
Merged

gh-132983: Simplify _zstd_exec() #133775

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fa9b12b
Replace add_type_to_module with ADD_TYPE
AA-Turner May 9, 2025
daf2e31
Remove unused variables from module state
AA-Turner May 9, 2025
55f876a
Add constants to ZstdCompressor in Python
AA-Turner May 9, 2025
6a3a135
Merge add_vars_to_module into _zstd_exec
AA-Turner May 9, 2025
d5ff6d3
PEP 7
AA-Turner May 9, 2025
9f402d7
Add constants to ZstdCompressor in C
AA-Turner May 9, 2025
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Replace add_type_to_module with ADD_TYPE
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@AA-Turner
AA-Turner committed May 9, 2025
commit fa9b12b6edee0a0a33f2d33741a4a3a272ddbe32
72 changes: 24 additions & 48 deletions Modules/_zstd/_zstdmodule.c
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Expand Up @@ -642,22 +642,6 @@ add_vars_to_module(PyObject *m)
} \
} while(0)

static inline int
add_type_to_module(PyObject *module, const char *name,
PyType_Spec *type_spec, PyTypeObject **dest)
{
PyObject *temp = PyType_FromModuleAndSpec(module, type_spec, NULL);

if (PyModule_AddObjectRef(module, name, temp) < 0) {
Py_XDECREF(temp);
return -1;
}

*dest = (PyTypeObject*) temp;

return 0;
}

static inline int
add_constant_to_type(PyTypeObject *type, const char *name, long value)
{
Expand All @@ -673,8 +657,20 @@ add_constant_to_type(PyTypeObject *type, const char *name, long value)
return rc;
}

static int _zstd_exec(PyObject *module) {
_zstd_state* const mod_state = get_zstd_state(module);
static int _zstd_exec(PyObject *m)
{
#define ADD_TYPE(TYPE, SPEC) \
do { \
TYPE = (PyTypeObject *)PyType_FromModuleAndSpec(m, &(SPEC), NULL); \
if (TYPE == NULL) { \
return -1; \
} \
if (PyModule_AddType(m, TYPE) < 0) { \
return -1; \
} \
} while (0)

_zstd_state* const mod_state = get_zstd_state(m);

/* Reusable objects & variables */
mod_state->empty_bytes = PyBytes_FromStringAndSize(NULL, 0);
Expand All @@ -698,40 +694,26 @@ static int _zstd_exec(PyObject *module) {
mod_state->DParameter_type = NULL;

/* Add variables to module */
if (add_vars_to_module(module) < 0) {
if (add_vars_to_module(m) < 0) {
return -1;
}

/* ZstdError */
/* Create and add heap types */
ADD_TYPE(mod_state->ZstdDict_type, zstd_dict_type_spec);
ADD_TYPE(mod_state->ZstdCompressor_type, zstd_compressor_type_spec);
ADD_TYPE(mod_state->ZstdDecompressor_type, zstd_decompressor_type_spec);
mod_state->ZstdError = PyErr_NewExceptionWithDoc(
"_zstd.ZstdError",
"Call to the underlying zstd library failed.",
NULL, NULL);
"_zstd.ZstdError",
"An error occurred in the zstd library.",
NULL, NULL);
if (mod_state->ZstdError == NULL) {
return -1;
}

if (PyModule_AddObjectRef(module, "ZstdError", mod_state->ZstdError) < 0) {
if (PyModule_AddType(m, (PyTypeObject *)mod_state->ZstdError) < 0) {
Py_DECREF(mod_state->ZstdError);
return -1;
}

/* ZstdDict */
if (add_type_to_module(module,
"ZstdDict",
&zstddict_type_spec,
&mod_state->ZstdDict_type) < 0) {
return -1;
}

// ZstdCompressor
if (add_type_to_module(module,
"ZstdCompressor",
&zstdcompressor_type_spec,
&mod_state->ZstdCompressor_type) < 0) {
return -1;
}

// Add EndDirective enum to ZstdCompressor
if (add_constant_to_type(mod_state->ZstdCompressor_type,
"CONTINUE",
Expand All @@ -751,13 +733,7 @@ static int _zstd_exec(PyObject *module) {
return -1;
}

// ZstdDecompressor
if (add_type_to_module(module,
"ZstdDecompressor",
&zstddecompressor_type_spec,
&mod_state->ZstdDecompressor_type) < 0) {
return -1;
}
#undef ADD_TYPE

return 0;
}
Expand Down
6 changes: 3 additions & 3 deletions Modules/_zstd/_zstdmodule.h
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Expand Up @@ -30,9 +30,9 @@ get_zstd_state_from_type(PyTypeObject *type) {
return (_zstd_state *)state;
}

extern PyType_Spec zstddict_type_spec;
extern PyType_Spec zstdcompressor_type_spec;
extern PyType_Spec zstddecompressor_type_spec;
extern PyType_Spec zstd_dict_type_spec;
extern PyType_Spec zstd_compressor_type_spec;
extern PyType_Spec zstd_decompressor_type_spec;

struct _zstd_state {
PyObject *empty_bytes;
Expand Down
2 changes: 1 addition & 1 deletion Modules/_zstd/compressor.c
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Expand Up @@ -699,7 +699,7 @@ static PyType_Slot zstdcompressor_slots[] = {
{0}
};

PyType_Spec zstdcompressor_type_spec = {
PyType_Spec zstd_compressor_type_spec = {
.name = "_zstd.ZstdCompressor",
.basicsize = sizeof(ZstdCompressor),
.flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,
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AA-Turner marked this conversation as resolved.
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2 changes: 1 addition & 1 deletion Modules/_zstd/decompressor.c
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Expand Up @@ -883,7 +883,7 @@ static PyType_Slot ZstdDecompressor_slots[] = {
{0}
};

PyType_Spec zstddecompressor_type_spec = {
PyType_Spec zstd_decompressor_type_spec = {
.name = "_zstd.ZstdDecompressor",
.basicsize = sizeof(ZstdDecompressor),
.flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,
Expand Down
2 changes: 1 addition & 1 deletion Modules/_zstd/zstddict.c
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Expand Up @@ -278,7 +278,7 @@ static PyType_Slot zstddict_slots[] = {
{0}
};

PyType_Spec zstddict_type_spec = {
PyType_Spec zstd_dict_type_spec = {
.name = "_zstd.ZstdDict",
.basicsize = sizeof(ZstdDict),
.flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,
Expand Down