| cdef struct ReaderCallbackBase: |
| Py_ssize_t position |
| Py_ssize_t maxdepth |
| |
| |
| cdef struct ReaderCallback: |
| ReaderCallbackBase base |
| PyObject *callback |
| PyObject *args |
| int32_t lookahead |
| |
| ctypedef ReaderCallback &ReaderCallbackRef |
| |
| |
| cdef inline uint32_t _reader_Callback_get(ReaderCallbackRef self): |
| cdef int32_t c = self.lookahead |
| |
| self.lookahead = -1 |
| self.base.position += 1 |
| |
| return cast_to_uint32(c) |
| |
| |
| cdef int32_t _reader_Callback_good(ReaderCallbackRef self) except -1: |
| cdef Py_ssize_t c = -1 |
| |
| if self.lookahead >= 0: |
| return True |
| |
| cdef object value = CallObject(self.callback, self.args) |
| if (value is None) or (value is False): |
| return False |
| |
| if isinstance(value, int): |
| c = value |
| elif isinstance(value, ORD_CLASSES): |
| if not value: |
| return False |
| c = ord(value) |
| else: |
| _raise_not_ord(value, self.base.position) |
| |
| if c < 0: |
| return False |
| elif c > 0x10ffff: |
| _raise_not_ord(value, self.base.position) |
| |
| self.lookahead = c |
| |
| return True |
