Function py_obj_to_variant

libsigrokdecode4DSL/util.c:574–617

* Convert a Python scalar object to a GLib variant. * Supported variant types are string, int64 and double. * * @param[in] py_obj The Python object. Must not be NULL. * @return A floating reference to a new variant, or NULL on failure. * * @private */

 * @private
 */
SRD_PRIV GVariant *py_obj_to_variant(PyObject *py_obj)
{
	GVariant *var = NULL;
	PyGILState_STATE gstate;

	gstate = PyGILState_Ensure();

	if (PyUnicode_Check(py_obj)) { /* string */
		PyObject *py_bytes;
		const char *str;

		py_bytes = PyUnicode_AsUTF8String(py_obj);
		if (py_bytes) {
			str = PyBytes_AsString(py_bytes);
			if (str)
				var = g_variant_new_string(str);
			Py_DECREF(py_bytes);
		}
		if (!var)
            srd_exception_catch(NULL, "Failed to extract string value");
	} else if (PyLong_Check(py_obj)) { /* integer */
		int64_t val;

		val = PyLong_AsLongLong(py_obj);
		if (!PyErr_Occurred())
			var = g_variant_new_int64(val);
		else
            srd_exception_catch(NULL, "Failed to extract integer value");
	} else if (PyFloat_Check(py_obj)) { /* float */
		double val;

		val = PyFloat_AsDouble(py_obj);
		if (!PyErr_Occurred())
			var = g_variant_new_double(val);
		else
            srd_exception_catch(NULL, "Failed to extract float value");
	} else {
		srd_err("Failed to extract value of unsupported type.");
	}

	PyGILState_Release(gstate);

	return var;
}