1 /*-------------------------------------------------------------------------
3 * plpython.h - Python as a procedural language for PostgreSQL
5 * Portions Copyright (c) 1996-2015, PostgreSQL Global Development Group
6 * Portions Copyright (c) 1994, Regents of the University of California
8 * src/pl/plpython/plpython.h
10 *-------------------------------------------------------------------------
16 * Include order should be: postgres.h, other postgres headers, plpython.h,
17 * other plpython headers
20 #error postgres.h must be included before plpython.h
24 * Undefine some things that get (re)defined in the Python headers. They aren't
25 * used by the PL/Python code, and all PostgreSQL headers should be included
26 * earlier, so this should be pretty safe.
28 #undef _POSIX_C_SOURCE
34 * Sometimes python carefully scribbles on our *printf macros.
35 * So we undefine them here and redefine them after it's done its dirty deed.
41 #if defined(_MSC_VER) && defined(_DEBUG)
42 /* Python uses #pragma to bring in a non-default libpython on VC++ if
43 * _DEBUG is defined */
45 /* Also hide away errcode, since we load Python.h before postgres.h */
46 #define errcode __msvc_errcode
50 #elif defined (_MSC_VER)
51 #define errcode __msvc_errcode
59 * Py_ssize_t compat for Python <= 2.4
61 #if PY_VERSION_HEX < 0x02050000 && !defined(PY_SSIZE_T_MIN)
62 typedef int Py_ssize_t;
64 #define PY_SSIZE_T_MAX INT_MAX
65 #define PY_SSIZE_T_MIN INT_MIN
69 * Python 2/3 strings/unicode/bytes handling. Python 2 has strings
70 * and unicode, Python 3 has strings, which are unicode on the C
71 * level, and bytes. The porting convention, which is similarly used
72 * in Python 2.6, is that "Unicode" is always unicode, and "Bytes" are
73 * bytes in Python 3 and strings in Python 2. Since we keep
74 * supporting Python 2 and its usual strings, we provide a
75 * compatibility layer for Python 3 that when asked to convert a C
76 * string to a Python string it converts the C string from the
77 * PostgreSQL server encoding to a Python Unicode object.
80 #if PY_VERSION_HEX < 0x02060000
81 /* This is exactly the compatibility layer that Python 2.6 uses. */
82 #define PyBytes_AsString PyString_AsString
83 #define PyBytes_FromStringAndSize PyString_FromStringAndSize
84 #define PyBytes_Size PyString_Size
85 #define PyObject_Bytes PyObject_Str
88 #if PY_MAJOR_VERSION >= 3
89 #define PyString_Check(x) 0
90 #define PyString_AsString(x) PLyUnicode_AsString(x)
91 #define PyString_FromString(x) PLyUnicode_FromString(x)
92 #define PyString_FromStringAndSize(x, size) PLyUnicode_FromStringAndSize(x, size)
96 * Python 3 only has long.
98 #if PY_MAJOR_VERSION >= 3
99 #define PyInt_FromLong(x) PyLong_FromLong(x)
100 #define PyInt_AsLong(x) PyLong_AsLong(x)
104 * PyVarObject_HEAD_INIT was added in Python 2.6. Its use is
105 * necessary to handle both Python 2 and 3. This replacement
106 * definition is for Python <=2.5
108 #ifndef PyVarObject_HEAD_INIT
109 #define PyVarObject_HEAD_INIT(type, size) \
110 PyObject_HEAD_INIT(type) size,
113 /* Python 3 removed the Py_TPFLAGS_HAVE_ITER flag */
114 #if PY_MAJOR_VERSION >= 3
115 #define Py_TPFLAGS_HAVE_ITER 0
118 /* define our text domain for translations */
120 #define TEXTDOMAIN PG_TEXTDOMAIN("plpython")
125 /* put back our snprintf and vsnprintf */
133 #define vsnprintf(...) vsnprintf_throw_on_fail(__VA_ARGS__)
134 #define snprintf(...) snprintf_throw_on_fail(__VA_ARGS__)
136 #define vsnprintf vsnprintf_throw_on_fail
137 #define snprintf snprintf_throw_on_fail
138 #endif /* __GNUC__ */
141 * Used throughout, and also by the Python 2/3 porting layer, so it's easier to
142 * just include it everywhere.
144 #include "plpy_util.h"
146 #endif /* PLPYTHON_H */