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# SPDX-License-Identifier: Apache-2.0
# Copyright © 2020-2024 Intel Corporation
from __future__ import annotations
import itertools
import os
import typing as T
from mesonbuild.interpreterbase.decorators import FeatureNew
from . import ExtensionModule, ModuleReturnValue, ModuleInfo
from .. import mesonlib, mlog
from ..build import (BothLibraries, BuildTarget, CustomTargetIndex, Executable, ExtractedObjects, GeneratedList,
CustomTarget, InvalidArguments, Jar, StructuredSources, SharedLibrary)
from ..compilers.compilers import are_asserts_disabled, lang_suffixes
from ..interpreter.type_checking import (
DEPENDENCIES_KW, LINK_WITH_KW, SHARED_LIB_KWS, TEST_KWS, OUTPUT_KW,
INCLUDE_DIRECTORIES, SOURCES_VARARGS, NoneType, in_set_validator
)
from ..interpreterbase import ContainerTypeInfo, InterpreterException, KwargInfo, typed_kwargs, typed_pos_args, noPosargs, permittedKwargs
from ..mesonlib import File
from ..programs import ExternalProgram
if T.TYPE_CHECKING:
from . import ModuleState
from ..build import IncludeDirs, LibTypes
from ..dependencies import Dependency, ExternalLibrary
from ..interpreter import Interpreter
from ..interpreter import kwargs as _kwargs
from ..interpreter.interpreter import SourceInputs, SourceOutputs
from ..programs import OverrideProgram
from ..interpreter.type_checking import SourcesVarargsType
from typing_extensions import TypedDict, Literal
class FuncTest(_kwargs.BaseTest):
dependencies: T.List[T.Union[Dependency, ExternalLibrary]]
is_parallel: bool
link_with: T.List[LibTypes]
rust_args: T.List[str]
class FuncBindgen(TypedDict):
args: T.List[str]
c_args: T.List[str]
include_directories: T.List[IncludeDirs]
input: T.List[SourceInputs]
output: str
output_inline_wrapper: str
dependencies: T.List[T.Union[Dependency, ExternalLibrary]]
language: T.Optional[Literal['c', 'cpp']]
bindgen_version: T.List[str]
class RustModule(ExtensionModule):
"""A module that holds helper functions for rust."""
INFO = ModuleInfo('rust', '0.57.0', stabilized='1.0.0')
def __init__(self, interpreter: Interpreter) -> None:
super().__init__(interpreter)
self._bindgen_bin: T.Optional[T.Union[ExternalProgram, Executable, OverrideProgram]] = None
self.methods.update({
'test': self.test,
'bindgen': self.bindgen,
'proc_macro': self.proc_macro,
})
@typed_pos_args('rust.test', str, BuildTarget)
@typed_kwargs(
'rust.test',
*TEST_KWS,
DEPENDENCIES_KW,
LINK_WITH_KW.evolve(since='1.2.0'),
KwargInfo(
'rust_args',
ContainerTypeInfo(list, str),
listify=True,
default=[],
since='1.2.0',
),
KwargInfo('is_parallel', bool, default=False),
)
def test(self, state: ModuleState, args: T.Tuple[str, BuildTarget], kwargs: FuncTest) -> ModuleReturnValue:
"""Generate a rust test target from a given rust target.
Rust puts it's unitests inside it's main source files, unlike most
languages that put them in external files. This means that normally
you have to define two separate targets with basically the same
arguments to get tests:
```meson
rust_lib_sources = [...]
rust_lib = static_library(
'rust_lib',
rust_lib_sources,
)
rust_lib_test = executable(
'rust_lib_test',
rust_lib_sources,
rust_args : ['--test'],
)
test(
'rust_lib_test',
rust_lib_test,
protocol : 'rust',
)
```
This is all fine, but not very DRY. This method makes it much easier
to define rust tests:
```meson
rust = import('unstable-rust')
rust_lib = static_library(
'rust_lib',
[sources],
)
rust.test('rust_lib_test', rust_lib)
```
"""
if any(isinstance(t, Jar) for t in kwargs.get('link_with', [])):
raise InvalidArguments('Rust tests cannot link with Jar targets')
name = args[0]
base_target: BuildTarget = args[1]
if not base_target.uses_rust():
raise InterpreterException('Second positional argument to rustmod.test() must be a rust based target')
extra_args = kwargs['args']
# Delete any arguments we don't want passed
if '--test' in extra_args:
mlog.warning('Do not add --test to rustmod.test arguments')
extra_args.remove('--test')
if '--format' in extra_args:
mlog.warning('Do not add --format to rustmod.test arguments')
i = extra_args.index('--format')
# Also delete the argument to --format
del extra_args[i + 1]
del extra_args[i]
for i, a in enumerate(extra_args):
if isinstance(a, str) and a.startswith('--format='):
del extra_args[i]
break
# We need to cast here, as currently these don't have protocol in them, but test itself does.
tkwargs = T.cast('_kwargs.FuncTest', kwargs.copy())
tkwargs['args'] = extra_args + ['--test', '--format', 'pretty']
tkwargs['protocol'] = 'rust'
new_target_kwargs = base_target.original_kwargs.copy()
# Don't mutate the shallow copied list, instead replace it with a new
# one
new_target_kwargs['install'] = False
new_target_kwargs['dependencies'] = new_target_kwargs.get('dependencies', []) + kwargs['dependencies']
new_target_kwargs['link_with'] = new_target_kwargs.get('link_with', []) + kwargs['link_with']
del new_target_kwargs['rust_crate_type']
lang_args = base_target.extra_args.copy()
lang_args['rust'] = base_target.extra_args['rust'] + kwargs['rust_args'] + ['--test']
new_target_kwargs['language_args'] = lang_args
sources = T.cast('T.List[SourceOutputs]', base_target.sources.copy())
sources.extend(base_target.generated)
new_target = Executable(
name, base_target.subdir, state.subproject, base_target.for_machine,
sources, base_target.structured_sources,
base_target.objects, base_target.environment, base_target.compilers,
new_target_kwargs
)
test = self.interpreter.make_test(
self.interpreter.current_node, (name, new_target), tkwargs)
return ModuleReturnValue(None, [new_target, test])
@noPosargs
@typed_kwargs(
'rust.bindgen',
KwargInfo('c_args', ContainerTypeInfo(list, str), default=[], listify=True),
KwargInfo('args', ContainerTypeInfo(list, str), default=[], listify=True),
KwargInfo(
'input',
ContainerTypeInfo(list, (File, GeneratedList, BuildTarget, BothLibraries, ExtractedObjects, CustomTargetIndex, CustomTarget, str), allow_empty=False),
default=[],
listify=True,
required=True,
),
KwargInfo('language', (str, NoneType), since='1.4.0', validator=in_set_validator({'c', 'cpp'})),
KwargInfo('bindgen_version', ContainerTypeInfo(list, str), default=[], listify=True, since='1.4.0'),
INCLUDE_DIRECTORIES.evolve(since_values={ContainerTypeInfo(list, str): '1.0.0'}),
OUTPUT_KW,
KwargInfo(
'output_inline_wrapper',
str,
default='',
since='1.4.0',
),
DEPENDENCIES_KW.evolve(since='1.0.0'),
)
def bindgen(self, state: ModuleState, args: T.List, kwargs: FuncBindgen) -> ModuleReturnValue:
"""Wrapper around bindgen to simplify it's use.
The main thing this simplifies is the use of `include_directory`
objects, instead of having to pass a plethora of `-I` arguments.
"""
header, *_deps = self.interpreter.source_strings_to_files(kwargs['input'])
# Split File and Target dependencies to add pass to CustomTarget
depends: T.List[SourceOutputs] = []
depend_files: T.List[File] = []
for d in _deps:
if isinstance(d, File):
depend_files.append(d)
else:
depends.append(d)
# Copy to avoid subsequent calls mutating the original
# TODO: if we want this to be per-machine we'll need a native kwarg
clang_args = state.environment.properties.host.get_bindgen_clang_args().copy()
for i in state.process_include_dirs(kwargs['include_directories']):
# bindgen always uses clang, so it's safe to hardcode -I here
clang_args.extend([f'-I{x}' for x in i.to_string_list(
state.environment.get_source_dir(), state.environment.get_build_dir())])
if are_asserts_disabled(state.environment.coredata.options):
clang_args.append('-DNDEBUG')
for de in kwargs['dependencies']:
for i in de.get_include_dirs():
clang_args.extend([f'-I{x}' for x in i.to_string_list(
state.environment.get_source_dir(), state.environment.get_build_dir())])
clang_args.extend(de.get_all_compile_args())
for s in de.get_sources():
if isinstance(s, File):
depend_files.append(s)
elif isinstance(s, CustomTarget):
depends.append(s)
if self._bindgen_bin is None:
self._bindgen_bin = state.find_program('bindgen', wanted=kwargs['bindgen_version'])
name: str
if isinstance(header, File):
name = header.fname
elif isinstance(header, (BuildTarget, BothLibraries, ExtractedObjects, StructuredSources)):
raise InterpreterException('bindgen source file must be a C header, not an object or build target')
else:
name = header.get_outputs()[0]
# bindgen assumes that C++ headers will be called .hpp. We want to
# ensure that anything Meson considers a C++ header is treated as one.
language = kwargs['language']
if language is None:
ext = os.path.splitext(name)[1][1:]
if ext in lang_suffixes['cpp']:
language = 'cpp'
elif ext == 'h':
language = 'c'
else:
raise InterpreterException(f'Unknown file type extension for: {name}')
# We only want include directories and defines, other things may not be valid
cargs = state.get_option('args', state.subproject, lang=language)
assert isinstance(cargs, list), 'for mypy'
for a in itertools.chain(state.global_args.get(language, []), state.project_args.get(language, []), cargs):
if a.startswith(('-I', '/I', '-D', '/D', '-U', '/U')):
clang_args.append(a)
if language == 'cpp':
clang_args.extend(['-x', 'c++'])
# Add the C++ standard to the clang arguments. Attempt to translate VS
# extension versions into the nearest standard version
std = state.get_option('std', lang=language)
assert isinstance(std, str), 'for mypy'
if std.startswith('vc++'):
if std.endswith('latest'):
mlog.warning('Attempting to translate vc++latest into a clang compatible version.',
'Currently this is hardcoded for c++20', once=True, fatal=False)
std = 'c++20'
else:
mlog.debug('The current C++ standard is a Visual Studio extension version.',
'bindgen will use a the nearest C++ standard instead')
std = std[1:]
if std != 'none':
clang_args.append(f'-std={std}')
inline_wrapper_args: T.List[str] = []
outputs = [kwargs['output']]
if kwargs['output_inline_wrapper']:
# Todo drop this isinstance once Executable supports version_compare
if isinstance(self._bindgen_bin, ExternalProgram):
if mesonlib.version_compare(self._bindgen_bin.get_version(), '< 0.65'):
raise InterpreterException('\'output_inline_wrapper\' parameter of rust.bindgen requires bindgen-0.65 or newer')
outputs.append(kwargs['output_inline_wrapper'])
inline_wrapper_args = [
'--experimental', '--wrap-static-fns',
'--wrap-static-fns-path', os.path.join(state.environment.build_dir, '@OUTPUT1@')
]
cmd = self._bindgen_bin.get_command() + \
[
'@INPUT@', '--output',
os.path.join(state.environment.build_dir, '@OUTPUT0@')
] + \
kwargs['args'] + inline_wrapper_args + ['--'] + \
kwargs['c_args'] + clang_args + \
['-MD', '-MQ', '@INPUT@', '-MF', '@DEPFILE@']
target = CustomTarget(
f'rustmod-bindgen-{name}'.replace('/', '_'),
state.subdir,
state.subproject,
state.environment,
cmd,
[header],
outputs,
depfile='@PLAINNAME@.d',
extra_depends=depends,
depend_files=depend_files,
backend=state.backend,
description='Generating bindings for Rust {}',
)
return ModuleReturnValue(target, [target])
# Allow a limited set of kwargs, but still use the full set of typed_kwargs()
# because it could be setting required default values.
@FeatureNew('rust.proc_macro', '1.3.0')
@permittedKwargs({'rust_args', 'rust_dependency_map', 'sources', 'dependencies', 'extra_files',
'link_args', 'link_depends', 'link_with', 'override_options'})
@typed_pos_args('rust.proc_macro', str, varargs=SOURCES_VARARGS)
@typed_kwargs('rust.proc_macro', *SHARED_LIB_KWS, allow_unknown=True)
def proc_macro(self, state: ModuleState, args: T.Tuple[str, SourcesVarargsType], kwargs: _kwargs.SharedLibrary) -> SharedLibrary:
kwargs['native'] = True # type: ignore
kwargs['rust_crate_type'] = 'proc-macro' # type: ignore
kwargs['rust_args'] = kwargs['rust_args'] + ['--extern', 'proc_macro']
target = state._interpreter.build_target(state.current_node, args, kwargs, SharedLibrary)
return target
def initialize(interp: Interpreter) -> RustModule:
return RustModule(interp)