8000 gh-106320: Remove private _Py_Identifier API · python/cpython@7ccbf0b · GitHub
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gh-106320: Remove private _Py_Identifier API
Remove the private _Py_Identifier type and related private functions from the public C API: * _PyObject_GetAttrId() * _PyObject_LookupSpecialId() * _PyObject_SetAttrId() * _PyType_LookupId() * _Py_IDENTIFIER() * _Py_static_string() * _Py_static_string_init() Move them to the internal C API: add a new pycore_identifier.h header file. No longer export these functions.
1 parent 5c68cba commit 7ccbf0b

8 files changed

+66
-46
lines changed

‎Include/cpython/object.h

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@@ -19,43 +19,6 @@ PyAPI_FUNC(Py_ssize_t) _PyInterpreterState_GetRefTotal(PyInterpreterState *);
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#endif
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/********************* String Literals ****************************************/
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/* This structure helps managing static strings. The basic usage goes like this:
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Instead of doing
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r = PyObject_CallMethod(o, "foo", "args", ...);
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do
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_Py_IDENTIFIER(foo);
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...
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r = _PyObject_CallMethodId(o, &PyId_foo, "args", ...);
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PyId_foo is a static variable, either on block level or file level. On first
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usage, the string "foo" is interned, and the structures are linked. On interpreter
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shutdown, all strings are released.
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Alternatively, _Py_static_string allows choosing the variable name.
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_PyUnicode_FromId returns a borrowed reference to the interned string.
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_PyObject_{Get,Set,Has}AttrId are __getattr__ versions using _Py_Identifier*.
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*/
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typedef struct _Py_Identifier {
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const char* string;
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// Index in PyInterpreterState.unicode.ids.array. It is process-wide
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// unique and must be initialized to -1.
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Py_ssize_t index;
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} _Py_Identifier;
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#ifndef Py_BUILD_CORE
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// For now we are keeping _Py_IDENTIFIER for continued use
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// in non-builtin extensions (and naughty PyPI modules).
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#define _Py_static_string_init(value) { .string = (value), .index = -1 }
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#define _Py_static_string(varname, value) static _Py_Identifier varname = _Py_static_string_init(value)
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#define _Py_IDENTIFIER(varname) _Py_static_string(PyId_##varname, #varname)
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#endif /* !Py_BUILD_CORE */
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typedef struct {
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/* Number implementations must check *both*
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arguments for proper type and implement the necessary conversions
@@ -273,18 +236,13 @@ typedef struct _heaptypeobject {
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PyAPI_FUNC(const char *) _PyType_Name(PyTypeObject *);
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PyAPI_FUNC(PyObject *) _PyType_Lookup(PyTypeObject *, PyObject *);
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PyAPI_FUNC(PyObject *) _PyType_LookupId(PyTypeObject *, _Py_Identifier *);
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PyAPI_FUNC(PyObject *) _PyObject_LookupSpecialId(PyObject *, _Py_Identifier *);
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PyAPI_FUNC(PyObject *) PyType_GetModuleByDef(PyTypeObject *, PyModuleDef *);
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PyAPI_FUNC(PyObject *) PyType_GetDict(PyTypeObject *);
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PyAPI_FUNC(int) PyObject_Print(PyObject *, FILE *, int);
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PyAPI_FUNC(void) _Py_BreakPoint(void);
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PyAPI_FUNC(void) _PyObject_Dump(PyObject *);
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PyAPI_FUNC(PyObject *) _PyObject_GetAttrId(PyObject *, _Py_Identifier *);
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PyAPI_FUNC(int) _PyObject_SetAttrId(PyObject *, _Py_Identifier *, PyObject *);
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PyAPI_FUNC(PyObject **) _PyObject_GetDictPtr(PyObject *);
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PyAPI_FUNC(void) PyObject_CallFinalizer(PyObject *);
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PyAPI_FUNC(int) PyObject_CallFinalizerFromDealloc(PyObject *);

‎Include/internal/pycore_call.h

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@@ -8,6 +8,7 @@ extern "C" {
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# error "this header requires Py_BUILD_CORE define"
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#endif
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#include "pycore_identifier.h" // _Py_Identifier
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#include "pycore_pystate.h" // _PyThreadState_GET()
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/* Suggested size (number of positional arguments) for arrays of PyObject*

‎Include/internal/pycore_dict.h

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@@ -9,6 +9,7 @@ extern "C" {
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# error "this header requires Py_BUILD_CORE define"
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#endif
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#include "pycore_identifier.h" // _Py_Identifier
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#include "pycore_object.h" // PyDictOrValues
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// Unsafe flavor of PyDict_GetItemWithError(): no error checking

‎Include/internal/pycore_identifier.h

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@@ -0,0 +1,54 @@
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/* String Literals: _Py_Identifier API */
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#ifndef Py_INTERNAL_IDENTIFIER_H
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#define Py_INTERNAL_IDENTIFIER_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef Py_BUILD_CORE
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# error "this header requires Py_BUILD_CORE define"
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#endif
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/* This structure helps managing static strings. The basic usage goes like this:
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Instead of doing
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r = PyObject_CallMethod(o, "foo", "args", ...);
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do
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_Py_IDENTIFIER(foo);
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...
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r = _PyObject_CallMethodId(o, &PyId_foo, "args", ...);
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PyId_foo is a static variable, either on block level or file level. On first
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usage, the string "foo" is interned, and the structures are linked. On interpreter
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shutdown, all strings are released.
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Alternatively, _Py_static_string allows choosing the variable name.
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_PyUnicode_FromId returns a borrowed reference to the interned string.
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_PyObject_{Get,Set,Has}AttrId are __getattr__ versions using _Py_Identifier*.
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*/
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typedef struct _Py_Identifier {
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const char* string;
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// Index in PyInterpreterState.unicode.ids.array. It is process-wide
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// unique and must be initialized to -1.
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Py_ssize_t index;
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} _Py_Identifier;
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// For now we are keeping _Py_IDENTIFIER for continued use
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// in non-builtin extensions (and naughty PyPI modules).
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#define _Py_static_string_init(value) { .string = (value), .index = -1 }
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#define _Py_static_string(varname, value) static _Py_Identifier varname = _Py_static_string_init(value)
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#define _Py_IDENTIFIER(varname) _Py_static_string(PyId_##varname, #varname)
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extern PyObject* _PyType_LookupId(PyTypeObject *, _Py_Identifier *);
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extern PyObject* _PyObject_LookupSpecialId(PyObject *, _Py_Identifier *);
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extern PyObject* _PyObject_GetAttrId(PyObject *, _Py_Identifier *);
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extern int _PyObject_SetAttrId(PyObject *, _Py_Identifier *, PyObject *);
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#ifdef __cplusplus
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}
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#endif
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#endif // !Py_INTERNAL_IDENTIFIER_H

‎Include/internal/pycore_unicodeobject.h

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@@ -9,6 +9,7 @@ extern "C" {
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#endif
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#include "pycore_fileutils.h" // _Py_error_handler
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#include "pycore_identifier.h" // _Py_Identifier
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#include "pycore_ucnhash.h" // _PyUnicode_Name_CAPI
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/* --- Characters Type APIs ----------------------------------------------- */

‎Makefile.pre.in

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@@ -1769,6 +1769,7 @@ PYTHON_HEADERS= \
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$(srcdir)/Include/internal/pycore_global_objects_fini_generated.h \
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$(srcdir)/Include/internal/pycore_hamt.h \
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$(srcdir)/Include/internal/pycore_hashtable.h \
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$(srcdir)/Include/internal/pycore_identifier.h \
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$(srcdir)/Include/internal/pycore_import.h \
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$(srcdir)/Include/internal/pycore_initconfig.h \
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$(srcdir)/Include/internal/pycore_interp.h \

‎PCbuild/pythoncore.vcxproj

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@@ -235,6 +235,7 @@
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<ClInclude Include="..\Include\internal\pycore_global_objects_fini_generated.h" />
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<ClInclude Include="..\Include\internal\pycore_hamt.h" />
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<ClInclude Include="..\Include\internal\pycore_hashtable.h" />
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<ClInclude Include="..\Include\internal\pycore_identifier.h" />
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<ClInclude Include="..\Include\internal\pycore_import.h" />
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<ClInclude Include="..\Include\internal\pycore_initconfig.h" />
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<ClInclude Include="..\Include\internal\pycore_interp.h" />
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<ClInclude Include="..\Include\internal\pycore_object_state.h" />
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<ClInclude Include="..\Include\internal\pycore_obmalloc.h" />
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<ClInclude Include="..\Include\internal\pycore_obmalloc_init.h" />
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<ClInclude Include="..\Include\internal\pycore_optimizer.h" />
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<ClInclude Include="..\Include\internal\pycore_optimizer.h" />
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<ClInclude Include="..\Include\internal\pycore_pathconfig.h" />
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<ClInclude Include="..\Include\internal\pycore_pyarena.h" />
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<ClInclude Include="..\Include\internal\pycore_pyerrors.h" />
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<ClInclude Include="..\Include\internal\pycore_unionobject.h" />
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<ClInclude Include="..\Include\internal\pycore_unicodeobject.h" />
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<ClInclude Include="..\Include\internal\pycore_unicodeobject_generated.h" />
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<ClInclude Include="..\Include\internal\pycore_uops.h" />
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<ClInclude Include="..\Include\internal\pycore_uops.h" />
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<ClInclude Include="..\Include\internal\pycore_warnings.h" />
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<ClInclude Include="..\Include\internal\pycore_weakref.h" />
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<ClInclude Include="..\Include\interpreteridobject.h" />

‎PCbuild/pythoncore.vcxproj.filters

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@@ -609,6 +609,9 @@
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<ClInclude Include="..\Include\internal\pycore_hashtable.h">
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<Filter>Include\internal</Filter>
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</ClInclude>
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<ClInclude Include="..\Include\internal\pycore_identifier.h">
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<Filter>Include\internal</Filter>
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</ClInclude>
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<ClInclude Include="..\Include\internal\pycore_import.h">
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<Filter>Include\internal</Filter>
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</ClInclude>
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</ClInclude>
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<ClInclude Include="..\Include\internal\pycore_optimizer.h">
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<Filter>Include\internal</Filter>
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</ClInclude>
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</ClInclude>
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<ClInclude Include="..\Include\internal\pycore_pathconfig.h">
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<Filter>Include\internal</Filter>
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</ClInclude>
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</ClInclude>
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<ClInclude Include="..\Include\internal\pycore_uops.h">
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<Filter>Include\internal</Filter>
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</ClInclude>
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</ClInclude>
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<ClInclude Include="$(zlibDir)\crc32.h">
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<Filter>Modules\zlib</Filter>
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</ClInclude>

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