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# Copyright 2020 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import wayland_protocol_data_classes
# Short aliases for typing
Message = wayland_protocol_data_classes.Message
MessageArg = wayland_protocol_data_classes.MessageArg
MessageArgType = wayland_protocol_data_classes.MessageArgType
def get_c_argument_type(arg_type: MessageArgType) -> str:
"""Maps a protocol argument type to a C type."""
# Note: This should match what the core scanner.c does
return {
MessageArgType.INT.value: 'int32_t',
MessageArgType.UINT.value: 'uint32_t',
MessageArgType.FIXED.value: 'wl_fixed_t',
MessageArgType.STRING.value: 'const char*',
MessageArgType.FD.value: 'int32_t',
MessageArgType.ARRAY.value: 'struct wl_array *',
MessageArgType.NEW_ID.value: 'uint32_t',
}[arg_type]
def get_c_arg_for_server_request_arg(arg: MessageArg) -> str:
"""Maps a protocol argument to C argument(s) for server-side requests."""
# Note: This should match what the core scanner.c does
if arg.type == MessageArgType.NEW_ID.value and not arg.interface:
return f', const char *interface, uint32_t version, uint32_t {arg.name}'
elif arg.type == MessageArgType.NEW_ID.value:
return f', uint32_t {arg.name}'
elif arg.type == MessageArgType.OBJECT.value:
return f', struct {arg.interface} *{arg.name}'
else:
return f', {get_c_argument_type(arg.type)} {arg.name}'
def get_c_arg_for_server_event_arg(arg: MessageArg) -> str:
"""Maps a protocol argument to C argument(s) for server-side events."""
# Note: This should match what the core scanner.c does
if arg.type == MessageArgType.NEW_ID.value:
return f', struct wl_resource* {arg.name}'
else:
return f', {get_c_argument_type(arg.type)} {arg.name}'
def get_c_return_type_for_client_request(message: Message) -> str:
"""Determines the C return type for client-side requests."""
# Note: This should match what the core scanner.c does
for arg in message.args:
if arg.type == MessageArgType.NEW_ID.value:
if arg.interface is None:
return 'void *'
else:
return f'struct {arg.interface}'
return 'void'
def get_c_arg_for_client_request_arg(arg: MessageArg) -> str:
"""Maps a protocol argument to C argument(s) for client-side requeuests."""
# Note: This should match what the core scanner.c does
if arg.type == MessageArgType.NEW_ID.value and not arg.interface:
return ', const struct wl_interface *interface, uint32_t version'
elif arg.type == MessageArgType.NEW_ID.value:
return ''
else:
return f', {get_c_argument_type(arg.type)} {arg.name}'
def get_c_arg_for_client_event_arg(arg: MessageArg) -> str:
"""Maps a protocol argument to C argument(s) for client-side events."""
if arg.type == MessageArgType.OBJECT.value and arg.interface is None:
return f', void * {arg.name}'
elif arg.type == MessageArgType.NEW_ID.value:
return f', struct {arg.interface} *{arg.name}'
elif arg.type == MessageArgType.OBJECT.value:
return f', struct {arg.interface} *{arg.name}'
else:
return f', {get_c_argument_type(arg.type)} {arg.name}'
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