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Diffstat (limited to 'src/pl/plpython/plpython.h')
| -rw-r--r-- | src/pl/plpython/plpython.h | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/pl/plpython/plpython.h b/src/pl/plpython/plpython.h new file mode 100644 index 00000000000..ab2983c16db --- /dev/null +++ b/src/pl/plpython/plpython.h @@ -0,0 +1,156 @@ +/*------------------------------------------------------------------------- + * + * plpython.h - Python as a procedural language for PostgreSQL + * + * Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/pl/plpython/plpython.h + * + *------------------------------------------------------------------------- + */ +#ifndef PLPYTHON_H +#define PLPYTHON_H + +/* + * Include order should be: postgres.h, other postgres headers, plpython.h, + * other plpython headers + */ +#ifndef POSTGRES_H +#error postgres.h must be included before plpython.h +#endif + +/* + * Undefine some things that get (re)defined in the Python headers. They aren't + * used by the PL/Python code, and all PostgreSQL headers should be included + * earlier, so this should be pretty safe. + */ +#undef _POSIX_C_SOURCE +#undef _XOPEN_SOURCE +#undef HAVE_STRERROR +#undef HAVE_TZNAME + +/* + * Sometimes python carefully scribbles on our *printf macros. + * So we undefine them here and redefine them after it's done its dirty deed. + */ + +#ifdef USE_REPL_SNPRINTF +#undef snprintf +#undef vsnprintf +#endif + +#if defined(_MSC_VER) && defined(_DEBUG) +/* Python uses #pragma to bring in a non-default libpython on VC++ if + * _DEBUG is defined */ +#undef _DEBUG +/* Also hide away errcode, since we load Python.h before postgres.h */ +#define errcode __msvc_errcode +#include <Python.h> +#undef errcode +#define _DEBUG +#elif defined (_MSC_VER) +#define errcode __msvc_errcode +#include <Python.h> +#undef errcode +#else +#include <Python.h> +#endif + +/* + * Py_ssize_t compat for Python <= 2.4 + */ +#if PY_VERSION_HEX < 0x02050000 && !defined(PY_SSIZE_T_MIN) +typedef int Py_ssize_t; + +#define PY_SSIZE_T_MAX INT_MAX +#define PY_SSIZE_T_MIN INT_MIN +#endif + +/* + * PyBool_FromLong is supported from 2.3. + */ +#if PY_VERSION_HEX < 0x02030000 +#define PyBool_FromLong(x) PyInt_FromLong(x) +#endif + +/* + * Python 2/3 strings/unicode/bytes handling. Python 2 has strings + * and unicode, Python 3 has strings, which are unicode on the C + * level, and bytes. The porting convention, which is similarly used + * in Python 2.6, is that "Unicode" is always unicode, and "Bytes" are + * bytes in Python 3 and strings in Python 2. Since we keep + * supporting Python 2 and its usual strings, we provide a + * compatibility layer for Python 3 that when asked to convert a C + * string to a Python string it converts the C string from the + * PostgreSQL server encoding to a Python Unicode object. + */ + +#if PY_VERSION_HEX < 0x02060000 +/* This is exactly the compatibility layer that Python 2.6 uses. */ +#define PyBytes_AsString PyString_AsString +#define PyBytes_FromStringAndSize PyString_FromStringAndSize +#define PyBytes_Size PyString_Size +#define PyObject_Bytes PyObject_Str +#endif + +#if PY_MAJOR_VERSION >= 3 +#define PyString_Check(x) 0 +#define PyString_AsString(x) PLyUnicode_AsString(x) +#define PyString_FromString(x) PLyUnicode_FromString(x) +#endif + +/* + * Python 3 only has long. + */ +#if PY_MAJOR_VERSION >= 3 +#define PyInt_FromLong(x) PyLong_FromLong(x) +#define PyInt_AsLong(x) PyLong_AsLong(x) +#endif + +/* + * PyVarObject_HEAD_INIT was added in Python 2.6. Its use is + * necessary to handle both Python 2 and 3. This replacement + * definition is for Python <=2.5 + */ +#ifndef PyVarObject_HEAD_INIT +#define PyVarObject_HEAD_INIT(type, size) \ + PyObject_HEAD_INIT(type) size, +#endif + +/* Python 3 removed the Py_TPFLAGS_HAVE_ITER flag */ +#if PY_MAJOR_VERSION >= 3 +#define Py_TPFLAGS_HAVE_ITER 0 +#endif + +/* define our text domain for translations */ +#undef TEXTDOMAIN +#define TEXTDOMAIN PG_TEXTDOMAIN("plpython") + +#include <compile.h> +#include <eval.h> + +/* put back our snprintf and vsnprintf */ +#ifdef USE_REPL_SNPRINTF +#ifdef snprintf +#undef snprintf +#endif +#ifdef vsnprintf +#undef vsnprintf +#endif +#ifdef __GNUC__ +#define vsnprintf(...) pg_vsnprintf(__VA_ARGS__) +#define snprintf(...) pg_snprintf(__VA_ARGS__) +#else +#define vsnprintf pg_vsnprintf +#define snprintf pg_snprintf +#endif /* __GNUC__ */ +#endif /* USE_REPL_SNPRINTF */ + +/* + * Used throughout, and also by the Python 2/3 porting layer, so it's easier to + * just include it everywhere. + */ +#include "plpy_util.h" + +#endif /* PLPYTHON_H */ |