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# Copyright 2021 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.
from __future__ import annotations
import os
import pathlib
import typing as T
from mesonbuild import mesonlib
from mesonbuild.build import CustomTarget, CustomTargetIndex, GeneratedList, Target
from mesonbuild.compilers import detect_compiler_for
from mesonbuild.interpreterbase.decorators import ContainerTypeInfo, FeatureDeprecated, FeatureNew, KwargInfo, typed_pos_args, typed_kwargs
from mesonbuild.mesonlib import version_compare, MachineChoice
from . import NewExtensionModule, ModuleReturnValue
if T.TYPE_CHECKING:
from . import ModuleState
from ..compilers import Compiler
from ..interpreter import Interpreter
class JavaModule(NewExtensionModule):
@FeatureNew('Java Module', '0.60.0')
def __init__(self, interpreter: Interpreter):
super().__init__()
self.methods.update({
'generate_native_header': self.generate_native_header,
'generate_native_headers': self.generate_native_headers,
})
def __get_java_compiler(self, state: ModuleState) -> Compiler:
if 'java' not in state.environment.coredata.compilers[MachineChoice.BUILD]:
detect_compiler_for(state.environment, 'java', MachineChoice.BUILD)
return state.environment.coredata.compilers[MachineChoice.BUILD]['java']
@FeatureDeprecated('java.generate_native_header', '0.62.0', 'Use java.generate_native_headers instead')
@typed_pos_args('java.generate_native_header', (str, mesonlib.File))
@typed_kwargs('java.generate_native_header', KwargInfo('package', str, default=None))
def generate_native_header(self, state: ModuleState, args: T.Tuple[T.Union[str, mesonlib.File]],
kwargs: T.Dict[str, T.Optional[str]]) -> ModuleReturnValue:
package = kwargs.get('package')
if isinstance(args[0], mesonlib.File):
file = args[0]
else:
file = mesonlib.File.from_source_file(state.source_root, state.subdir, args[0])
if package:
header = f'{package.replace(".", "_")}_{pathlib.Path(file.fname).stem}.h'
else:
header = f'{pathlib.Path(file.fname).stem}.h'
javac = self.__get_java_compiler(state)
target = CustomTarget(
os.path.basename(header),
state.subdir,
state.subproject,
state.environment,
mesonlib.listify([
javac.exelist,
'-d',
'@PRIVATE_DIR@',
'-h',
state.subdir,
'@INPUT@',
]),
[file],
[header],
backend=state.backend,
)
# It is only known that 1.8.0 won't pre-create the directory. 11 and 16
# do not exhibit this behavior.
if version_compare(javac.version, '1.8.0'):
pathlib.Path(state.backend.get_target_private_dir_abs(target)).mkdir(parents=True, exist_ok=True)
return ModuleReturnValue(target, [target])
@FeatureNew('java.generate_native_headers', '0.62.0')
@typed_pos_args('java.generate_native_headers',
varargs=(str, mesonlib.File, Target, CustomTargetIndex, GeneratedList))
@typed_kwargs('java.generate_native_headers',
KwargInfo('classes', ContainerTypeInfo(list, str), default=[], listify=True,
required=True),
KwargInfo('package', str, default=None))
def generate_native_headers(self, state: ModuleState, args: T.Tuple[T.List[mesonlib.FileOrString]],
kwargs: T.Dict[str, T.Optional[str]]) -> ModuleReturnValue:
classes = T.cast('T.List[str]', kwargs.get('classes'))
package = kwargs.get('package')
headers: T.List[str] = []
for clazz in classes:
underscore_clazz = clazz.replace(".", "_")
if package:
headers.append(f'{package.replace(".", "_")}_{underscore_clazz}.h')
else:
headers.append(f'{underscore_clazz}.h')
javac = self.__get_java_compiler(state)
command = mesonlib.listify([
javac.exelist,
'-d',
'@PRIVATE_DIR@',
'-h',
state.subdir,
'@INPUT@',
])
prefix = classes[0] if not package else package
target = CustomTarget(f'{prefix}-native-headers',
state.subdir,
state.subproject,
state.environment,
command,
sources=args[0], outputs=headers, backend=state.backend)
# It is only known that 1.8.0 won't pre-create the directory. 11 and 16
# do not exhibit this behavior.
if version_compare(javac.version, '1.8.0'):
pathlib.Path(state.backend.get_target_private_dir_abs(target)).mkdir(parents=True, exist_ok=True)
return ModuleReturnValue(target, [target])
def initialize(*args: T.Any, **kwargs: T.Any) -> JavaModule:
return JavaModule(*args, **kwargs)
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