Function PLy_global_args_push

src/pl/plpython/plpy_exec.c:616–636

* Save away any existing arguments for the given procedure, so that we can * install new values for a recursive call. This should be invoked before * doing PLy_function_build_args() or PLy_trigger_build_args(). * * NB: callers must ensure that PLy_global_args_pop gets invoked once, and * only once, per successful completion of PLy_global_args_push. Otherwise * we'll end up out-of-sync betw

 * of proc->argstack.
 */
static void
PLy_global_args_push(PLyProcedure *proc)
{
	/* We only need to push if we are already inside some active call */
	if (proc->calldepth > 0)
	{
		PLySavedArgs *node;

		/* Build a struct containing current argument values */
		node = PLy_function_save_args(proc);

		/*
		 * Push the saved argument values into the procedure's stack.  Once we
		 * modify either proc->argstack or proc->calldepth, we had better
		 * return without the possibility of error.
		 */
		node->next = proc->argstack;
		proc->argstack = node;
	}
	proc->calldepth++;
}

/*
 * Pop old arguments when exiting a recursive call.