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# Copyright 2022 Mark Bolhuis <mark@bolhuis.dev>
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import annotations
import os
import typing as T
from . import ExtensionModule, ModuleReturnValue, ModuleInfo
from ..build import CustomTarget
from ..interpreter.type_checking import NoneType, in_set_validator
from ..interpreterbase import typed_pos_args, typed_kwargs, KwargInfo
from ..mesonlib import File, MesonException
if T.TYPE_CHECKING:
from typing_extensions import Literal, TypedDict
from . import ModuleState
from ..build import Executable
from ..dependencies import Dependency
from ..interpreter import Interpreter
from ..programs import ExternalProgram
from ..mesonlib import FileOrString
class ScanXML(TypedDict):
public: bool
client: bool
server: bool
core_only: bool
class FindProtocol(TypedDict):
state: Literal['stable', 'staging', 'unstable']
version: T.Optional[int]
class WaylandModule(ExtensionModule):
INFO = ModuleInfo('wayland', '0.62.0', unstable=True)
def __init__(self, interpreter: Interpreter) -> None:
super().__init__(interpreter)
self.protocols_dep: T.Optional[Dependency] = None
self.pkgdatadir: T.Optional[str] = None
self.scanner_bin: T.Optional[T.Union[ExternalProgram, Executable]] = None
self.methods.update({
'scan_xml': self.scan_xml,
'find_protocol': self.find_protocol,
})
@typed_pos_args('wayland.scan_xml', varargs=(str, File), min_varargs=1)
@typed_kwargs(
'wayland.scan_xml',
KwargInfo('public', bool, default=False),
KwargInfo('client', bool, default=True),
KwargInfo('server', bool, default=False),
KwargInfo('core_only', bool, default=False, since='0.64.0'),
)
def scan_xml(self, state: ModuleState, args: T.Tuple[T.List[FileOrString]], kwargs: ScanXML) -> ModuleReturnValue:
if self.scanner_bin is None:
# wayland-scanner from BUILD machine must have same version as wayland
# libraries from HOST machine.
dep = state.dependency('wayland-client')
self.scanner_bin = state.find_tool('wayland-scanner', 'wayland-scanner', 'wayland_scanner',
wanted=dep.version)
scope = 'public' if kwargs['public'] else 'private'
# We have to cast because mypy can't deduce these are literals
sides = [i for i in T.cast("T.List[Literal['client', 'server']]", ['client', 'server']) if kwargs[i]]
if not sides:
raise MesonException('At least one of client or server keyword argument must be set to true.')
xml_files = self.interpreter.source_strings_to_files(args[0])
targets: T.List[CustomTarget] = []
for xml_file in xml_files:
name = os.path.splitext(os.path.basename(xml_file.fname))[0]
code = CustomTarget(
f'{name}-protocol',
state.subdir,
state.subproject,
state.environment,
[self.scanner_bin, f'{scope}-code', '@INPUT@', '@OUTPUT@'],
[xml_file],
[f'{name}-protocol.c'],
backend=state.backend,
)
targets.append(code)
for side in sides:
command = [self.scanner_bin, f'{side}-header', '@INPUT@', '@OUTPUT@']
if kwargs['core_only']:
command.append('--include-core-only')
header = CustomTarget(
f'{name}-{side}-protocol',
state.subdir,
state.subproject,
state.environment,
command,
[xml_file],
[f'{name}-{side}-protocol.h'],
backend=state.backend,
)
targets.append(header)
return ModuleReturnValue(targets, targets)
@typed_pos_args('wayland.find_protocol', str)
@typed_kwargs(
'wayland.find_protocol',
KwargInfo('state', str, default='stable', validator=in_set_validator({'stable', 'staging', 'unstable'})),
KwargInfo('version', (int, NoneType)),
)
def find_protocol(self, state: ModuleState, args: T.Tuple[str], kwargs: FindProtocol) -> File:
base_name = args[0]
xml_state = kwargs['state']
version = kwargs['version']
if xml_state != 'stable' and version is None:
raise MesonException(f'{xml_state} protocols require a version number.')
if xml_state == 'stable' and version is not None:
raise MesonException('stable protocols do not require a version number.')
if self.protocols_dep is None:
self.protocols_dep = state.dependency('wayland-protocols')
if self.pkgdatadir is None:
self.pkgdatadir = self.protocols_dep.get_variable(pkgconfig='pkgdatadir', internal='pkgdatadir')
if xml_state == 'stable':
xml_name = f'{base_name}.xml'
elif xml_state == 'staging':
xml_name = f'{base_name}-v{version}.xml'
else:
xml_name = f'{base_name}-unstable-v{version}.xml'
path = os.path.join(self.pkgdatadir, xml_state, base_name, xml_name)
if not os.path.exists(path):
raise MesonException(f'The file {path} does not exist.')
return File.from_absolute_file(path)
def initialize(interpreter: Interpreter) -> WaylandModule:
return WaylandModule(interpreter)
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