# 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 its unitests inside its 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 its 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.optstore): 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(f'{language}_args', state.subproject) 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(f'{language}_std') 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)