unicorn/qemu/qapi/common.json
Eric Blake 1bda2b186b
qapi: Add alias for ErrorClass
The qapi enum ErrorClass is unusual that it uses 'CamelCase' names,
contrary to our documented convention of preferring 'lower-case'.
However, this enum is entrenched in the API; we cannot change
what strings QMP outputs. Meanwhile, we want to simplify how
c_enum_const() is used to generate enum constants, by moving away
from the heuristics of camel_to_upper() to a more straightforward
c_name(N).upper() - but doing so will rename all of the ErrorClass
constants and cause churn to all client files, where the new names
are aesthetically less pleasing (ERROR_CLASS_DEVICENOTFOUND looks
like we can't make up our minds on whether to break between words).

So as always in computer science, solve the problem by some more
indirection: rename the qapi type to QapiErrorClass, and add a
new enum ErrorClass in error.h whose members are aliases of the
qapi type, but with the spelling expected elsewhere in the tree.
Then, when c_enum_const() changes the munging, we only have to
adjust the one alias spot.

Backports commit f22a28b898322c01b0463a8b7ec551d72bc61a5b from qemu
2018-02-19 20:38:51 -05:00

31 lines
916 B
Python

# -*- Mode: Python -*-
#
# QAPI common definitions
##
# @QapiErrorClass
#
# QEMU error classes
#
# @GenericError: this is used for errors that don't require a specific error
# class. This should be the default case for most errors
#
# @CommandNotFound: the requested command has not been found
#
# @DeviceEncrypted: the requested operation can't be fulfilled because the
# selected device is encrypted
#
# @DeviceNotActive: a device has failed to be become active
#
# @DeviceNotFound: the requested device has not been found
#
# @KVMMissingCap: the requested operation can't be fulfilled because a
# required KVM capability is missing
#
# Since: 1.2
##
{ 'enum': 'QapiErrorClass',
# Keep this in sync with ErrorClass in error.h
'data': [ 'GenericError', 'CommandNotFound', 'DeviceEncrypted',
'DeviceNotActive', 'DeviceNotFound', 'KVMMissingCap' ] }