Fallback to encode vars(obj)
diff --git a/src/_encoder.pyx b/src/_encoder.pyx
index 80dd2c4..82a6186 100644
--- a/src/_encoder.pyx
+++ b/src/_encoder.pyx
@@ -349,11 +349,23 @@
cdef int _encode_unstringifiable(WriterRef writer, object data) except -1:
- if expect(not data, True):
+ if not data:
writer.append_s(writer, b'none', 4)
- else:
- _raise_unstringifiable(data)
- return True
+ return True
+
+ Py_EnterRecursiveCall(' while encoding JSON5 object with vars(obj) fallback')
+ try:
+ try:
+ data = PyObject_GenericGetDict(data, NULL)
+ except:
+ pass
+ else:
+ if _encode_mapping(writer, data):
+ return True
+ finally:
+ Py_LeaveRecursiveCall()
+
+ _raise_unstringifiable(data)
cdef int _encode_other(WriterRef writer, object data):
diff --git a/src/_imports.pyx b/src/_imports.pyx
index 7af9493..c4f39ed 100644
--- a/src/_imports.pyx
+++ b/src/_imports.pyx
@@ -197,6 +197,7 @@
void ObjectFree 'PyObject_Free'(void *p)
object ObjectInit 'PyObject_INIT'(PyObject *obj, type cls)
PyVarObject *ObjectInitVar 'PyObject_InitVar'(PyVarObject *obj, type cls, Py_ssize_t size)
+ object PyObject_GenericGetDict(object o, void *context)
object PyLong_FromString(const char *str, char **pend, int base)
