/usr/lib/python2.7/dist-packages/traits/py2to3.h is in python-traits 4.5.0-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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This header contains version specific implementations of certain
often used tasks, behind a version agnostic API.
*/
#include "Python.h"
/* Attribute names
*/
#if PY_MAJOR_VERSION < 3
PyObject *Py2to3_NormaliseAttrName(PyObject *name) {
if( PyString_Check(name) ){
return name;
#ifdef Py_USING_UNICODE
} else if ( PyUnicode_Check( name ) ) {
return PyUnicode_AsEncodedString( name, NULL, NULL );
#endif // #ifdef Py_USING_UNICODE
}
return NULL;
}
void Py2to3_FinishNormaliseAttrName(PyObject *name,PyObject *nname){
if(nname != name){
Py_DECREF(nname);
}
}
PyObject *Py2to3_AttrNameCStr(PyObject *name) {
return name;
}
#define Py2to3_AttrName_AS_STRING(name) PyString_AS_STRING(name)
void Py2to3_FinishAttrNameCStr(PyObject *nname){
};
#else
PyObject *Py2to3_NormaliseAttrName(PyObject *name) {
if( PyUnicode_Check(name) ){
return name;
}
return NULL;
}
void Py2to3_FinishNormaliseAttrName(PyObject *name,PyObject *nname){
}
PyObject *Py2to3_AttrNameCStr(PyObject *name) {
return PyUnicode_AsUTF8String(name);
}
#define Py2to3_AttrName_AS_STRING(name) PyBytes_AS_STRING(name)
void Py2to3_FinishAttrNameCStr(PyObject *nname){
Py_DECREF(nname);
};
#endif
/*
Simple strings for PyErr formatting:
* Python 2:
- Attributes are ASCII
- PyErr_Format uses PyString_FromFormat
* Python 3:
- Attributes are Unicode
- PyErr_Format uses PyUnicode_FromFormat
Thus SimpleString == PyString if Python < 3 else PyUnicode
*/
#if PY_MAJOR_VERSION >= 3
#define Py2to3_SimpleString_Check(name) PyUnicode_Check(name)
#define Py2to3_SimpleString_GET_SIZE(name) PyUnicode_GET_SIZE(name)
#define Py2to3_SimpleString_Type PyUnicode_Type
#define Py2to3_PYERR_SIMPLE_STRING_FMTCHR "U"
#define Py2to3_PYERR_PREPARE_SIMPLE_STRING(name) name
#define Py2to3_SimpleString_FromString(string) PyUnicode_FromString(string)
#else
#define Py2to3_SimpleString_Check(name) PyString_Check(name)
#define Py2to3_SimpleString_GET_SIZE(name) PyString_GET_SIZE(name)
#define Py2to3_SimpleString_Type PyString_Type
#define Py2to3_PYERR_SIMPLE_STRING_FMTCHR "s"
#define Py2to3_PYERR_PREPARE_SIMPLE_STRING(name) PyString_AS_STRING(name)
#define Py2to3_SimpleString_FromString(string) PyString_FromString(string)
#endif
/* The following macro is defined from Python 2.6 and differently in Python 3 */
#ifndef Py_TYPE
#define Py_TYPE(ob) (((PyObject*)(ob))->ob_type)
#endif
/* In Python 3, all ints are longs */
#if PY_MAJOR_VERSION >= 3
#define Py2to3_PyNum_Check PyLong_Check
#define Py2to3_PyNum_FromLong PyLong_FromLong
#define Py2to3_PyNum_AsLong PyLong_AsLong
#else
#define Py2to3_PyNum_Check PyInt_Check
#define Py2to3_PyNum_FromLong PyInt_FromLong
#define Py2to3_PyNum_AsLong PyInt_AsLong
#endif
/* Get hash of an object, using cached value for attribute names
*/
#ifndef Py_hash_t
#define Py_hash_t long
#endif
#if PY_MAJOR_VERSION < 3
long Py2to3_GetHash_wCache(PyObject *obj){
long hash;
if ( PyString_CheckExact( obj ) &&
((hash = ((PyStringObject *) obj)->ob_shash) != -1) ) {
return hash;
}
return PyObject_Hash( obj );
}
#else
Py_hash_t Py2to3_GetHash_wCache(PyObject *obj){
#ifndef Py_LIMITED_API
Py_hash_t hash = -1;
if ( PyUnicode_CheckExact( obj ) ) {
#if PY_MAJOR_VERSION < 3 || PY_MINOR_VERSION < 3
hash = ((PyUnicodeObject *) obj)->hash;
#else
hash = ((PyUnicodeObject *) obj)->_base._base.hash;
#endif
// } else if ( PyBytes_CheckExact( key )) {
// hash = ((PyBytesObject *) key)->ob_shash;
}
if (hash == -1) {
hash = PyObject_Hash( obj );
}
return hash;
#else
return PyObject_Hash( obj );
#endif // #ifndef Py_LIMITED_API
}
#endif // #if PY_MAJOR_VERION < 3
/* Get a value from a dict whose keys are attribute names.
If *name* is of a type unfitting for an attribute name,
*bad_attr* is returned.
Does use the hash cache where possible.
Precondition: *dict* is a valid PyDictObject
*/
#if PY_MAJOR_VERSION < 3
#ifdef Py_USING_UNICODE
#define Py2to3_AttrNameCheck(name) (PyString_Check(name) || PyUnicode_Check(name))
#else
#define Py2to3_AttrNameCheck(name) (PyString_Check(name))
#endif
PyObject *Py2to3_GetAttrDictValue(PyDictObject * dict, PyObject *name, PyObject *bad_attr) {
long hash;
PyObject *nname;
PyObject *value;
if ( PyString_CheckExact( name ) ) {
if ( (hash = ((PyStringObject *) name)->ob_shash) == -1 )
hash = PyObject_Hash( name );
return (dict->ma_lookup)( dict, name, hash )->me_value;
}
nname = Py2to3_NormaliseAttrName(name);
if( nname == NULL ){
PyErr_Clear();
return bad_attr;
}
hash = PyObject_Hash( nname );
if( hash == -1 ){
Py2to3_FinishNormaliseAttrName(name,nname);
PyErr_Clear();
return NULL;
}
value = (dict->ma_lookup)( dict, nname, hash )->me_value;
Py2to3_FinishNormaliseAttrName(name,nname);
return value;
}
#else // #if PY_MAJOR_VERSION < 3
#define Py2to3_AttrNameCheck(name) (PyUnicode_Check(name))
PyObject *Py2to3_GetAttrDictValue(PyDictObject * dict, PyObject *name, PyObject *bad_attr) {
#if !defined(Py_LIMITED_API) && (PY_MAJOR_VERSION < 3 || PY_MINOR_VERSION < 3) && 0 // this does not work as intended! don't use it!
Py_hash_t hash;
if( PyUnicode_CheckExact( name ) ) {
#if PY_MINOR_VERSION < 3
hash = ((PyUnicodeObject *) dict)->hash;
#else
// currently not usable, as dict->ma_lookup does not exist either
hash = ((PyUnicodeObject *) dict)->_base._base.hash;
#endif
if( hash == -1)
hash = PyObject_Hash( name );
return (dict->ma_lookup)( dict, name, hash )->me_value;
}
#endif // #ifndef Py_LIMITED_API
if( !PyUnicode_Check(name) )
return bad_attr;
return PyDict_GetItem((PyObject *)dict, name);
}
#endif // #if PY_MAJOR_VERSION < 3
/*
*/
double Py2to3_PyNum_AsDouble(PyObject *value) {
#if PY_MAJOR_VERSION < 3
if ( PyInt_Check( value ) ) {
return (double) PyInt_AS_LONG( value );
} else if( !PyLong_Check(value) ){
#else
if ( !PyLong_Check( value ) ) {
#endif // #if PY_MAJOR_VERSION < 3
PyErr_SetNone( PyExc_TypeError );
return -1.;
}
return PyLong_AsDouble( value );
}
#ifndef PyVarObject_HEAD_INIT
#define PyVarObject_HEAD_INIT(type, size) \
PyObject_HEAD_INIT(type) size,
#endif
#if PY_MAJOR_VERSION >= 3
#define Py2to3_MOD_ERROR_VAL NULL
#define Py2to3_MOD_SUCCESS_VAL(val) val
#define Py2to3_MOD_INIT(name) PyMODINIT_FUNC PyInit_##name(void)
#define Py2to3_MOD_DEF(ob, name, doc, methods) \
static struct PyModuleDef moduledef = { \
PyModuleDef_HEAD_INIT, name, doc, -1, methods, }; \
ob = PyModule_Create(&moduledef);
#else
#define Py2to3_MOD_ERROR_VAL
#define Py2to3_MOD_SUCCESS_VAL(val)
#define Py2to3_MOD_INIT(name) void init##name(void)
#define Py2to3_MOD_DEF(ob, name, doc, methods) \
ob = Py_InitModule3(name, methods, doc);
#endif
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