1 /*------------------------------------------------------------------------- 2 * 3 * plpython.h - Python as a procedural language for PostgreSQL 4 * 5 * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group 6 * Portions Copyright (c) 1994, Regents of the University of California 7 * 8 * src/pl/plpython/plpython.h 9 * 10 *------------------------------------------------------------------------- 11 */ 12 #ifndef PLPYTHON_H 13 #define PLPYTHON_H 14 15 /* 16 * Include order should be: postgres.h, other postgres headers, plpython.h, 17 * other plpython headers 18 */ 19 #ifndef POSTGRES_H 20 #error postgres.h must be included before plpython.h 21 #endif 22 23 /* 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. 27 */ 28 #undef _POSIX_C_SOURCE 29 #undef _XOPEN_SOURCE 30 #undef HAVE_STRERROR 31 #undef HAVE_TZNAME 32 33 /* 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. 36 */ 37 38 #ifdef USE_REPL_SNPRINTF 39 #undef snprintf 40 #undef vsnprintf 41 #endif 42 43 #if defined(_MSC_VER) && defined(_DEBUG) 44 /* Python uses #pragma to bring in a non-default libpython on VC++ if 45 * _DEBUG is defined */ 46 #undef _DEBUG 47 /* Also hide away errcode, since we load Python.h before postgres.h */ 48 #define errcode __msvc_errcode 49 #include <Python.h> 50 #undef errcode 51 #define _DEBUG 52 #elif defined (_MSC_VER) 53 #define errcode __msvc_errcode 54 #include <Python.h> 55 #undef errcode 56 #else 57 #include <Python.h> 58 #endif 59 60 /* 61 * Py_ssize_t compat for Python <= 2.4 62 */ 63 #if PY_VERSION_HEX < 0x02050000 && !defined(PY_SSIZE_T_MIN) 64 typedef int Py_ssize_t; 65 66 #define PY_SSIZE_T_MAX INT_MAX 67 #define PY_SSIZE_T_MIN INT_MIN 68 #endif 69 70 /* 71 * Python 2/3 strings/unicode/bytes handling. Python 2 has strings 72 * and unicode, Python 3 has strings, which are unicode on the C 73 * level, and bytes. The porting convention, which is similarly used 74 * in Python 2.6, is that "Unicode" is always unicode, and "Bytes" are 75 * bytes in Python 3 and strings in Python 2. Since we keep 76 * supporting Python 2 and its usual strings, we provide a 77 * compatibility layer for Python 3 that when asked to convert a C 78 * string to a Python string it converts the C string from the 79 * PostgreSQL server encoding to a Python Unicode object. 80 */ 81 82 #if PY_VERSION_HEX < 0x02060000 83 /* This is exactly the compatibility layer that Python 2.6 uses. */ 84 #define PyBytes_AsString PyString_AsString 85 #define PyBytes_FromStringAndSize PyString_FromStringAndSize 86 #define PyBytes_Size PyString_Size 87 #define PyObject_Bytes PyObject_Str 88 #endif 89 90 #if PY_MAJOR_VERSION >= 3 91 #define PyString_Check(x) 0 92 #define PyString_AsString(x) PLyUnicode_AsString(x) 93 #define PyString_FromString(x) PLyUnicode_FromString(x) 94 #define PyString_FromStringAndSize(x, size) PLyUnicode_FromStringAndSize(x, size) 95 #endif 96 97 /* 98 * Python 3 only has long. 99 */ 100 #if PY_MAJOR_VERSION >= 3 101 #define PyInt_FromLong(x) PyLong_FromLong(x) 102 #define PyInt_AsLong(x) PyLong_AsLong(x) 103 #endif 104 105 /* 106 * PyVarObject_HEAD_INIT was added in Python 2.6. Its use is 107 * necessary to handle both Python 2 and 3. This replacement 108 * definition is for Python <=2.5 109 */ 110 #ifndef PyVarObject_HEAD_INIT 111 #define PyVarObject_HEAD_INIT(type, size) \ 112 PyObject_HEAD_INIT(type) size, 113 #endif 114 115 /* Python 3 removed the Py_TPFLAGS_HAVE_ITER flag */ 116 #if PY_MAJOR_VERSION >= 3 117 #define Py_TPFLAGS_HAVE_ITER 0 118 #endif 119 120 /* define our text domain for translations */ 121 #undef TEXTDOMAIN 122 #define TEXTDOMAIN PG_TEXTDOMAIN("plpython") 123 124 #include <compile.h> 125 #include <eval.h> 126 127 /* put back our snprintf and vsnprintf */ 128 #ifdef USE_REPL_SNPRINTF 129 #ifdef snprintf 130 #undef snprintf 131 #endif 132 #ifdef vsnprintf 133 #undef vsnprintf 134 #endif 135 #ifdef __GNUC__ 136 #define vsnprintf(...) pg_vsnprintf(__VA_ARGS__) 137 #define snprintf(...) pg_snprintf(__VA_ARGS__) 138 #else 139 #define vsnprintf pg_vsnprintf 140 #define snprintf pg_snprintf 141 #endif /* __GNUC__ */ 142 #endif /* USE_REPL_SNPRINTF */ 143 144 /* 145 * Used throughout, and also by the Python 2/3 porting layer, so it's easier to 146 * just include it everywhere. 147 */ 148 #include "plpy_util.h" 149 150 #endif /* PLPYTHON_H */ 151