1 /*-------------------------------------------------------------------------
3 * plpython.h - Python as a procedural language for PostgreSQL
5 * Portions Copyright (c) 1996-2019, 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. (In practice, other plpython headers will also
18 * include this file, so that they can compile standalone.)
21 #error postgres.h must be included before plpython.h
25 * Undefine some things that get (re)defined in the Python headers. They aren't
26 * used by the PL/Python code, and all PostgreSQL headers should be included
27 * earlier, so this should be pretty safe.
29 #undef _POSIX_C_SOURCE
33 * Sometimes python carefully scribbles on our *printf macros.
34 * So we undefine them here and redefine them after it's done its dirty deed.
45 #if defined(_MSC_VER) && defined(_DEBUG)
46 /* Python uses #pragma to bring in a non-default libpython on VC++ if
47 * _DEBUG is defined */
49 /* Also hide away errcode, since we load Python.h before postgres.h */
50 #define errcode __msvc_errcode
54 #elif defined (_MSC_VER)
55 #define errcode __msvc_errcode
63 * Py_ssize_t compat for Python <= 2.4
65 #if PY_VERSION_HEX < 0x02050000 && !defined(PY_SSIZE_T_MIN)
66 typedef int Py_ssize_t;
68 #define PY_SSIZE_T_MAX INT_MAX
69 #define PY_SSIZE_T_MIN INT_MIN
73 * Python 2/3 strings/unicode/bytes handling. Python 2 has strings
74 * and unicode, Python 3 has strings, which are unicode on the C
75 * level, and bytes. The porting convention, which is similarly used
76 * in Python 2.6, is that "Unicode" is always unicode, and "Bytes" are
77 * bytes in Python 3 and strings in Python 2. Since we keep
78 * supporting Python 2 and its usual strings, we provide a
79 * compatibility layer for Python 3 that when asked to convert a C
80 * string to a Python string it converts the C string from the
81 * PostgreSQL server encoding to a Python Unicode object.
84 #if PY_VERSION_HEX < 0x02060000
85 /* This is exactly the compatibility layer that Python 2.6 uses. */
86 #define PyBytes_AsString PyString_AsString
87 #define PyBytes_FromStringAndSize PyString_FromStringAndSize
88 #define PyBytes_Size PyString_Size
89 #define PyObject_Bytes PyObject_Str
92 #if PY_MAJOR_VERSION >= 3
93 #define PyString_Check(x) 0
94 #define PyString_AsString(x) PLyUnicode_AsString(x)
95 #define PyString_FromString(x) PLyUnicode_FromString(x)
96 #define PyString_FromStringAndSize(x, size) PLyUnicode_FromStringAndSize(x, size)
100 * Python 3 only has long.
102 #if PY_MAJOR_VERSION >= 3
103 #define PyInt_FromLong(x) PyLong_FromLong(x)
104 #define PyInt_AsLong(x) PyLong_AsLong(x)
108 * PyVarObject_HEAD_INIT was added in Python 2.6. Its use is
109 * necessary to handle both Python 2 and 3. This replacement
110 * definition is for Python <=2.5
112 #ifndef PyVarObject_HEAD_INIT
113 #define PyVarObject_HEAD_INIT(type, size) \
114 PyObject_HEAD_INIT(type) size,
117 /* Python 3 removed the Py_TPFLAGS_HAVE_ITER flag */
118 #if PY_MAJOR_VERSION >= 3
119 #define Py_TPFLAGS_HAVE_ITER 0
122 /* define our text domain for translations */
124 #define TEXTDOMAIN PG_TEXTDOMAIN("plpython")
129 /* put back our *printf macros ... this must match src/include/port.h */
155 #define vsnprintf pg_vsnprintf
156 #define snprintf pg_snprintf
157 #define vsprintf pg_vsprintf
158 #define sprintf pg_sprintf
159 #define vfprintf pg_vfprintf
160 #define fprintf pg_fprintf
161 #define vprintf pg_vprintf
162 #define printf(...) pg_printf(__VA_ARGS__)
165 * Used throughout, and also by the Python 2/3 porting layer, so it's easier to
166 * just include it everywhere.
168 #include "plpy_util.h"
170 #endif /* PLPYTHON_H */