diff options
Diffstat (limited to '')
| -rw-r--r-- | third_party/rust/uniffi_bindgen/src/bindings/python/templates/Helpers.py | 36 |
1 files changed, 25 insertions, 11 deletions
diff --git a/third_party/rust/uniffi_bindgen/src/bindings/python/templates/Helpers.py b/third_party/rust/uniffi_bindgen/src/bindings/python/templates/Helpers.py index dca962f176..5d4bcbba89 100644 --- a/third_party/rust/uniffi_bindgen/src/bindings/python/templates/Helpers.py +++ b/third_party/rust/uniffi_bindgen/src/bindings/python/templates/Helpers.py @@ -16,15 +16,19 @@ class _UniffiRustCallStatus(ctypes.Structure): # These match the values from the uniffi::rustcalls module CALL_SUCCESS = 0 CALL_ERROR = 1 - CALL_PANIC = 2 + CALL_UNEXPECTED_ERROR = 2 + + @staticmethod + def default(): + return _UniffiRustCallStatus(code=_UniffiRustCallStatus.CALL_SUCCESS, error_buf=_UniffiRustBuffer.default()) def __str__(self): if self.code == _UniffiRustCallStatus.CALL_SUCCESS: return "_UniffiRustCallStatus(CALL_SUCCESS)" elif self.code == _UniffiRustCallStatus.CALL_ERROR: return "_UniffiRustCallStatus(CALL_ERROR)" - elif self.code == _UniffiRustCallStatus.CALL_PANIC: - return "_UniffiRustCallStatus(CALL_PANIC)" + elif self.code == _UniffiRustCallStatus.CALL_UNEXPECTED_ERROR: + return "_UniffiRustCallStatus(CALL_UNEXPECTED_ERROR)" else: return "_UniffiRustCallStatus(<invalid code>)" @@ -37,7 +41,7 @@ def _rust_call_with_error(error_ffi_converter, fn, *args): # # This function is used for rust calls that return Result<> and therefore can set the CALL_ERROR status code. # error_ffi_converter must be set to the _UniffiConverter for the error class that corresponds to the result. - call_status = _UniffiRustCallStatus(code=_UniffiRustCallStatus.CALL_SUCCESS, error_buf=_UniffiRustBuffer(0, 0, None)) + call_status = _UniffiRustCallStatus.default() args_with_error = args + (ctypes.byref(call_status),) result = fn(*args_with_error) @@ -53,7 +57,7 @@ def _uniffi_check_call_status(error_ffi_converter, call_status): raise InternalError("_rust_call_with_error: CALL_ERROR, but error_ffi_converter is None") else: raise error_ffi_converter.lift(call_status.error_buf) - elif call_status.code == _UniffiRustCallStatus.CALL_PANIC: + elif call_status.code == _UniffiRustCallStatus.CALL_UNEXPECTED_ERROR: # When the rust code sees a panic, it tries to construct a _UniffiRustBuffer # with the message. But if that code panics, then it just sends back # an empty buffer. @@ -66,10 +70,20 @@ def _uniffi_check_call_status(error_ffi_converter, call_status): raise InternalError("Invalid _UniffiRustCallStatus code: {}".format( call_status.code)) -# A function pointer for a callback as defined by UniFFI. -# Rust definition `fn(handle: u64, method: u32, args: _UniffiRustBuffer, buf_ptr: *mut _UniffiRustBuffer) -> int` -_UNIFFI_FOREIGN_CALLBACK_T = ctypes.CFUNCTYPE(ctypes.c_int, ctypes.c_ulonglong, ctypes.c_ulong, ctypes.POINTER(ctypes.c_char), ctypes.c_int, ctypes.POINTER(_UniffiRustBuffer)) - -# UniFFI future continuation -_UNIFFI_FUTURE_CONTINUATION_T = ctypes.CFUNCTYPE(None, ctypes.c_size_t, ctypes.c_int8) +def _uniffi_trait_interface_call(call_status, make_call, write_return_value): + try: + return write_return_value(make_call()) + except Exception as e: + call_status.code = _UniffiRustCallStatus.CALL_UNEXPECTED_ERROR + call_status.error_buf = {{ Type::String.borrow()|lower_fn }}(repr(e)) +def _uniffi_trait_interface_call_with_error(call_status, make_call, write_return_value, error_type, lower_error): + try: + try: + return write_return_value(make_call()) + except error_type as e: + call_status.code = _UniffiRustCallStatus.CALL_ERROR + call_status.error_buf = lower_error(e) + except Exception as e: + call_status.code = _UniffiRustCallStatus.CALL_UNEXPECTED_ERROR + call_status.error_buf = {{ Type::String.borrow()|lower_fn }}(repr(e)) |