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# Copyright 2019 The Meson development team
# 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.
# This file contains the base representation for import('modname')
from __future__ import annotations
import typing as T
from .. import mesonlib
from ..mesonlib import relpath, HoldableObject, MachineChoice
from ..interpreterbase.decorators import noKwargs, noPosargs
from ..programs import ExternalProgram
if T.TYPE_CHECKING:
from ..interpreter import Interpreter
from ..interpreter.interpreterobjects import MachineHolder
from ..interpreterbase import TYPE_var, TYPE_kwargs
from ..programs import OverrideProgram
from ..wrap import WrapMode
from ..build import EnvironmentVariables, Executable
from ..dependencies import Dependency
class ModuleState:
"""Object passed to all module methods.
This is a WIP API provided to modules, it should be extended to have everything
needed so modules does not touch any other part of Meson internal APIs.
"""
def __init__(self, interpreter: 'Interpreter') -> None:
# Keep it private, it should be accessed only through methods.
self._interpreter = interpreter
self.source_root = interpreter.environment.get_source_dir()
self.build_to_src = relpath(interpreter.environment.get_source_dir(),
interpreter.environment.get_build_dir())
self.subproject = interpreter.subproject
self.subdir = interpreter.subdir
self.current_lineno = interpreter.current_lineno
self.environment = interpreter.environment
self.project_name = interpreter.build.project_name
self.project_version = interpreter.build.dep_manifest[interpreter.active_projectname].version
# The backend object is under-used right now, but we will need it:
# https://github.com/mesonbuild/meson/issues/1419
self.backend = interpreter.backend
self.targets = interpreter.build.targets
self.data = interpreter.build.data
self.headers = interpreter.build.get_headers()
self.man = interpreter.build.get_man()
self.global_args = interpreter.build.global_args.host
self.project_args = interpreter.build.projects_args.host.get(interpreter.subproject, {})
self.build_machine = T.cast('MachineHolder', interpreter.builtin['build_machine']).held_object
self.host_machine = T.cast('MachineHolder', interpreter.builtin['host_machine']).held_object
self.target_machine = T.cast('MachineHolder', interpreter.builtin['target_machine']).held_object
self.current_node = interpreter.current_node
def get_include_args(self, include_dirs: T.Iterable[T.Union[str, build.IncludeDirs]], prefix: str = '-I') -> T.List[str]:
if not include_dirs:
return []
srcdir = self.environment.get_source_dir()
builddir = self.environment.get_build_dir()
dirs_str: T.List[str] = []
for dirs in include_dirs:
if isinstance(dirs, str):
dirs_str += [f'{prefix}{dirs}']
else:
dirs_str.extend([f'{prefix}{i}' for i in dirs.to_string_list(srcdir, builddir)])
dirs_str.extend([f'{prefix}{i}' for i in dirs.get_extra_build_dirs()])
return dirs_str
def find_program(self, prog: T.Union[str, T.List[str]], required: bool = True,
version_func: T.Optional[T.Callable[['ExternalProgram'], str]] = None,
wanted: T.Optional[str] = None, silent: bool = False,
for_machine: MachineChoice = MachineChoice.HOST) -> 'ExternalProgram':
return self._interpreter.find_program_impl(prog, required=required, version_func=version_func,
wanted=wanted, silent=silent, for_machine=for_machine)
def find_tool(self, name: str, depname: str, varname: str, required: bool = True,
wanted: T.Optional[str] = None) -> T.Union['Executable', ExternalProgram, 'OverrideProgram']:
# Look in overrides in case it's built as subproject
progobj = self._interpreter.program_from_overrides([name], [])
if progobj is not None:
return progobj
# Look in machine file
prog_list = self.environment.lookup_binary_entry(MachineChoice.HOST, name)
if prog_list is not None:
return ExternalProgram.from_entry(name, prog_list)
# Check if pkgconfig has a variable
dep = self.dependency(depname, native=True, required=False, wanted=wanted)
if dep.found() and dep.type_name == 'pkgconfig':
value = dep.get_variable(pkgconfig=varname)
if value:
return ExternalProgram(name, [value])
# Normal program lookup
return self.find_program(name, required=required, wanted=wanted)
def dependency(self, depname: str, native: bool = False, required: bool = True,
wanted: T.Optional[str] = None) -> 'Dependency':
kwargs = {'native': native, 'required': required}
if wanted:
kwargs['version'] = wanted
# FIXME: Even if we fix the function, mypy still can't figure out what's
# going on here. And we really dont want to call interpreter
# implementations of meson functions anyway.
return self._interpreter.func_dependency(self.current_node, [depname], kwargs) # type: ignore
def test(self, args: T.Tuple[str, T.Union[build.Executable, build.Jar, 'ExternalProgram', mesonlib.File]],
workdir: T.Optional[str] = None,
env: T.Union[T.List[str], T.Dict[str, str], str] = None,
depends: T.List[T.Union[build.CustomTarget, build.BuildTarget]] = None) -> None:
kwargs = {'workdir': workdir,
'env': env,
'depends': depends,
}
# typed_* takes a list, and gives a tuple to func_test. Violating that constraint
# makes the universe (or at least use of this function) implode
real_args = list(args)
# TODO: Use interpreter internal API, but we need to go through @typed_kwargs
self._interpreter.func_test(self.current_node, real_args, kwargs)
def get_option(self, name: str, subproject: str = '',
machine: MachineChoice = MachineChoice.HOST,
lang: T.Optional[str] = None,
module: T.Optional[str] = None) -> T.Union[str, int, bool, 'WrapMode']:
return self.environment.coredata.get_option(mesonlib.OptionKey(name, subproject, machine, lang, module))
def is_user_defined_option(self, name: str, subproject: str = '',
machine: MachineChoice = MachineChoice.HOST,
lang: T.Optional[str] = None,
module: T.Optional[str] = None) -> bool:
key = mesonlib.OptionKey(name, subproject, machine, lang, module)
return key in self._interpreter.user_defined_options.cmd_line_options
class ModuleObject(HoldableObject):
"""Base class for all objects returned by modules
"""
def __init__(self) -> None:
self.methods: T.Dict[
str,
T.Callable[[ModuleState, T.List['TYPE_var'], 'TYPE_kwargs'], T.Union[ModuleReturnValue, 'TYPE_var']]
] = {}
class MutableModuleObject(ModuleObject):
pass
class NewExtensionModule(ModuleObject):
"""Class for modern modules
provides the found method.
"""
def __init__(self) -> None:
super().__init__()
self.methods.update({
'found': self.found_method,
})
@noPosargs
@noKwargs
def found_method(self, state: 'ModuleState', args: T.List['TYPE_var'], kwargs: 'TYPE_kwargs') -> bool:
return self.found()
@staticmethod
def found() -> bool:
return True
def get_devenv(self) -> T.Optional['EnvironmentVariables']:
return None
# FIXME: Port all modules to stop using self.interpreter and use API on
# ModuleState instead. Modules should stop using this class and instead use
# ModuleObject base class.
class ExtensionModule(NewExtensionModule):
def __init__(self, interpreter: 'Interpreter') -> None:
super().__init__()
self.interpreter = interpreter
class NotFoundExtensionModule(NewExtensionModule):
"""Class for modern modules
provides the found method.
"""
@staticmethod
def found() -> bool:
return False
def is_module_library(fname):
'''
Check if the file is a library-like file generated by a module-specific
target, such as GirTarget or TypelibTarget
'''
if hasattr(fname, 'fname'):
fname = fname.fname
suffix = fname.split('.')[-1]
return suffix in ('gir', 'typelib')
class ModuleReturnValue:
def __init__(self, return_value: T.Optional['TYPE_var'],
new_objects: T.Sequence[T.Union['TYPE_var', 'build.ExecutableSerialisation']]) -> None:
self.return_value = return_value
assert isinstance(new_objects, list)
self.new_objects: T.List[T.Union['TYPE_var', 'build.ExecutableSerialisation']] = new_objects