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Avoid direct cross-module links in hstore_plperl and ltree_plpython, too.

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Just turning the crank on the project started in commit d51924be8.
These cases turn out to be exact subsets of the boilerplate needed
for hstore_plpython.

Discussion: <2652.1475512158@sss.pgh.pa.us>
This commit is contained in:
Tom Lane
2016-10-04 17:49:07 -04:00
parent fc76259f5b
commit eda04886c1
10 changed files with 102 additions and 44 deletions
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29
contrib/ltree_plpython/ltree_plpython.c
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@ -1,10 +1,39 @@
#include "postgres.h"
#include "fmgr.h"
#include "plpython.h"
#include "ltree.h"
PG_MODULE_MAGIC;
extern void _PG_init(void);
/* Linkage to functions in plpython module */
#if PY_MAJOR_VERSION >= 3
typedef PyObject *(*PLyUnicode_FromStringAndSize_t) (const char *s, Py_ssize_t size);
static PLyUnicode_FromStringAndSize_t PLyUnicode_FromStringAndSize_p;
#endif
/*
* Module initialize function: fetch function pointers for cross-module calls.
*/
void
_PG_init(void)
{
/* Asserts verify that typedefs above match original declarations */
#if PY_MAJOR_VERSION >= 3
AssertVariableIsOfType(&PLyUnicode_FromStringAndSize, PLyUnicode_FromStringAndSize_t);
PLyUnicode_FromStringAndSize_p = (PLyUnicode_FromStringAndSize_t)
load_external_function("$libdir/" PLPYTHON_LIBNAME, "PLyUnicode_FromStringAndSize",
true, NULL);
#endif
}
/* These defines must be after the module init function */
#define PLyUnicode_FromStringAndSize PLyUnicode_FromStringAndSize_p
PG_FUNCTION_INFO_V1(ltree_to_plpython);