text: # Copyright 2012-2021 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 .. import mparser
  from .. import environment
  from .. import coredata
  from .. import dependencies
  from .. import mlog
  from .. import build
  from .. import optinterpreter
  from .. import compilers
  from .. import envconfig
  from ..wrap import wrap, WrapMode
  from .. import mesonlib
  from ..mesonlib import MesonBugException, HoldableObject, FileMode, MachineChoice, OptionKey, listify, extract_as_list, has_path_sep
  from ..programs import ExternalProgram, NonExistingExternalProgram
  from ..dependencies import Dependency
  from ..depfile import DepFile
  from ..interpreterbase import ContainerTypeInfo, InterpreterBase, KwargInfo, typed_kwargs, typed_pos_args
  from ..interpreterbase import noPosargs, noKwargs, permittedKwargs, noArgsFlattening, noSecondLevelHolderResolving, unholder_return
  from ..interpreterbase import InterpreterException, InvalidArguments, InvalidCode, SubdirDoneRequest
  from ..interpreterbase import Disabler, disablerIfNotFound
  from ..interpreterbase import FeatureNew, FeatureDeprecated, FeatureNewKwargs, FeatureDeprecatedKwargs
  from ..interpreterbase import ObjectHolder
  from ..interpreterbase.baseobjects import TYPE_nkwargs, TYPE_nvar, TYPE_var, TYPE_kwargs
  from ..modules import ExtensionModule, ModuleObject, MutableModuleObject, NewExtensionModule, NotFoundExtensionModule
  from ..cmake import CMakeInterpreter
  from ..backend.backends import Backend, ExecutableSerialisation
  
  from . import interpreterobjects as OBJ
  from . import compiler as compilerOBJ
  from .mesonmain import MesonMain
  from .dependencyfallbacks import DependencyFallbacksHolder
  from .interpreterobjects import (
      SubprojectHolder,
      ConfigurationDataObject,
      Test,
      RunProcess,
      extract_required_kwarg,
      extract_search_dirs,
      NullSubprojectInterpreter,
  )
  from .type_checking import (
      COMMAND_KW,
      CT_BUILD_BY_DEFAULT,
      CT_INPUT_KW,
      CT_INSTALL_DIR_KW,
      CT_OUTPUT_KW,
      DEPENDS_KW,
      DEPEND_FILES_KW,
      DEPFILE_KW,
      ENV_KW,
      INSTALL_KW,
      INSTALL_MODE_KW,
      CT_INSTALL_TAG_KW,
      LANGUAGE_KW,
      NATIVE_KW, OVERRIDE_OPTIONS_KW,
      REQUIRED_KW,
      NoneType,
      in_set_validator,
  )
  from . import primitives as P_OBJ
  
  from pathlib import Path
  import os
  import shutil
  import uuid
  import re
  import stat
  import collections
  import typing as T
  import textwrap
  import importlib
  
  if T.TYPE_CHECKING:
      import argparse
  
      from . import kwargs
      from ..programs import OverrideProgram
  
      # Input source types passed to Targets
      SourceInputs = T.Union[mesonlib.File, build.GeneratedList, build.BuildTarget, build.BothLibraries,
                             build.CustomTargetIndex, build.CustomTarget, build.GeneratedList, str]
      # Input source types passed to the build.Target5 classes
      SourceOutputs = T.Union[mesonlib.File, build.GeneratedList,
                              build.BuildTarget, build.CustomTargetIndex, build.CustomTarget,
                              build.GeneratedList]
  
  
  def stringifyUserArguments(args, quote=False):
      if isinstance(args, list):
          return '[%s]' % ', '.join([stringifyUserArguments(x, True) for x in args])
      elif isinstance(args, dict):
          return '{%s}' % ', '.join(['{} : {}'.format(stringifyUserArguments(k, True), stringifyUserArguments(v, True)) for k, v in args.items()])
      elif isinstance(args, bool):
          return 'true' if args else 'false'
      elif isinstance(args, int):
          return str(args)
      elif isinstance(args, str):
          return f"'{args}'" if quote else args
      raise InvalidArguments('Function accepts only strings, integers, bools, lists, dictionaries and lists thereof.')
  
  class Summary:
      def __init__(self, project_name, project_version):
          self.project_name = project_name
          self.project_version = project_version
          self.sections = collections.defaultdict(dict)
          self.max_key_len = 0
  
      def add_section(self, section, values, kwargs, subproject):
          bool_yn = kwargs.get('bool_yn', False)
          if not isinstance(bool_yn, bool):
              raise InterpreterException('bool_yn keyword argument must be boolean')
          list_sep = kwargs.get('list_sep')
          if list_sep is not None and not isinstance(list_sep, str):
              raise InterpreterException('list_sep keyword argument must be string')
          for k, v in values.items():
              if k in self.sections[section]:
                  raise InterpreterException(f'Summary section {section!r} already have key {k!r}')
              formatted_values = []
              for i in listify(v):
                  if isinstance(i, bool) and bool_yn:
                      formatted_values.append(mlog.green('YES') if i else mlog.red('NO'))
                  elif isinstance(i, (str, int, bool)):
                      formatted_values.append(str(i))
                  elif isinstance(i, (ExternalProgram, Dependency)):
                      FeatureNew.single_use('dependency or external program in summary', '0.57.0', subproject)
                      formatted_values.append(i.summary_value())
                  elif isinstance(i, coredata.UserOption):
                      FeatureNew.single_use('feature option in summary', '0.58.0', subproject)
                      formatted_values.append(i.printable_value())
                  else:
                      m = 'Summary value in section {!r}, key {!r}, must be string, integer, boolean, dependency or external program'
                      raise InterpreterException(m.format(section, k))
              self.sections[section][k] = (formatted_values, list_sep)
              self.max_key_len = max(self.max_key_len, len(k))
  
      def dump(self):
          mlog.log(self.project_name, mlog.normal_cyan(self.project_version))
          for section, values in self.sections.items():
              mlog.log('')  # newline
              if section:
                  mlog.log(' ', mlog.bold(section))
              for k, v in values.items():
                  v, list_sep = v
                  padding = self.max_key_len - len(k)
                  end = ' ' if v else ''
                  mlog.log(' ' * 3, k + ' ' * padding + ':', end=end)
                  indent = self.max_key_len + 6
                  self.dump_value(v, list_sep, indent)
          mlog.log('')  # newline
  
      def dump_value(self, arr, list_sep, indent):
          lines_sep = '\n' + ' ' * indent
          if list_sep is None:
              mlog.log(*arr, sep=lines_sep)
              return
          max_len = shutil.get_terminal_size().columns
          line = []
          line_len = indent
          lines_sep = list_sep.rstrip() + lines_sep
          for v in arr:
              v_len = len(v) + len(list_sep)
              if line and line_len + v_len > max_len:
                  mlog.log(*line, sep=list_sep, end=lines_sep)
                  line_len = indent
                  line = []
              line.append(v)
              line_len += v_len
          mlog.log(*line, sep=list_sep)
  
  known_library_kwargs = (
      build.known_shlib_kwargs |
      build.known_stlib_kwargs
  )
  
  known_build_target_kwargs = (
      known_library_kwargs |
      build.known_exe_kwargs |
      build.known_jar_kwargs |
      {'target_type'}
  )
  
  TEST_KWARGS: T.List[KwargInfo] = [
      KwargInfo('args', ContainerTypeInfo(list, (str, mesonlib.File, build.BuildTarget, build.CustomTarget)),
                listify=True, default=[]),
      KwargInfo('should_fail', bool, default=False),
      KwargInfo('timeout', int, default=30),
      KwargInfo('workdir', (str, NoneType), default=None,
                validator=lambda x: 'must be an absolute path' if not os.path.isabs(x) else None),
      KwargInfo('protocol', str,
                default='exitcode',
                validator=in_set_validator({'exitcode', 'tap', 'gtest', 'rust'}),
                since_values={'gtest': '0.55.0', 'rust': '0.57.0'}),
      KwargInfo('depends', ContainerTypeInfo(list, (build.CustomTarget, build.BuildTarget)),
                listify=True, default=[], since='0.46.0'),
      KwargInfo('priority', int, default=0, since='0.52.0'),
      # TODO: env needs reworks of the way the environment variable holder itself works probably
      ENV_KW,
      KwargInfo('suite', ContainerTypeInfo(list, str), listify=True, default=['']),  # yes, a list of empty string
  ]
  
  permitted_dependency_kwargs = {
      'allow_fallback',
      'cmake_args',
      'cmake_module_path',
      'cmake_package_version',
      'components',
      'default_options',
      'fallback',
      'include_type',
      'language',
      'main',
      'method',
      'modules',
      'native',
      'not_found_message',
      'optional_modules',
      'private_headers',
      'required',
      'static',
      'version',
  }
  
  implicit_check_false_warning = """You should add the boolean check kwarg to the run_command call.
           It currently defaults to false,
           but it will default to true in future releases of meson.
           See also: https://github.com/mesonbuild/meson/issues/9300"""
  class Interpreter(InterpreterBase, HoldableObject):
  
      def __init__(
                  self,
                  _build: build.Build,
                  backend: T.Optional[Backend] = None,
                  subproject: str = '',
                  subdir: str = '',
                  subproject_dir: str = 'subprojects',
                  default_project_options: T.Optional[T.Dict[str, str]] = None,
                  mock: bool = False,
                  ast: T.Optional[mparser.CodeBlockNode] = None,
                  is_translated: bool = False,
                  user_defined_options: T.Optional['argparse.Namespace'] = None,
              ) -> None:
          super().__init__(_build.environment.get_source_dir(), subdir, subproject)
          self.active_projectname = ''
          self.build = _build
          self.environment = self.build.environment
          self.coredata = self.environment.get_coredata()
          self.backend = backend
          self.summary = {}
          self.modules = {}
          # Subproject directory is usually the name of the subproject, but can
          # be different for dependencies provided by wrap files.
          self.subproject_directory_name = subdir.split(os.path.sep)[-1]
          self.subproject_dir = subproject_dir
          self.option_file = os.path.join(self.source_root, self.subdir, 'meson_options.txt')
          if not mock and ast is None:
              self.load_root_meson_file()
              self.sanity_check_ast()
          elif ast is not None:
              self.ast = ast
              self.sanity_check_ast()
          self.builtin.update({'meson': MesonMain(self.build, self)})
          self.generators: T.List[build.Generator] = []
          self.processed_buildfiles = set() # type: T.Set[str]
          self.project_args_frozen = False
          self.global_args_frozen = False  # implies self.project_args_frozen
          self.subprojects: T.Dict[str, SubprojectHolder] = {}
          self.subproject_stack = []
          self.configure_file_outputs = {}
          # Passed from the outside, only used in subprojects.
          if default_project_options:
              self.default_project_options = default_project_options.copy()
          else:
              self.default_project_options = {}
          self.project_default_options = {}
          self.build_func_dict()
          self.build_holder_map()
          self.user_defined_options = user_defined_options
  
          # build_def_files needs to be defined before parse_project is called
          #
          # For non-meson subprojects, we'll be using the ast. Even if it does
          # exist we don't want to add a dependency on it, it's autogenerated
          # from the actual build files, and is just for reference.
          self.build_def_files = []
          build_filename = os.path.join(self.subdir, environment.build_filename)
          if not is_translated:
              self.build_def_files.append(build_filename)
          if not mock:
              self.parse_project()
          self._redetect_machines()
  
      def __getnewargs_ex__(self) -> T.Tuple[T.Tuple[object], T.Dict[str, object]]:
          raise MesonBugException('This class is unpicklable')
  
      def _redetect_machines(self):
          # Re-initialize machine descriptions. We can do a better job now because we
          # have the compilers needed to gain more knowledge, so wipe out old
          # inference and start over.
          machines = self.build.environment.machines.miss_defaulting()
          machines.build = environment.detect_machine_info(self.coredata.compilers.build)
          self.build.environment.machines = machines.default_missing()
          assert self.build.environment.machines.build.cpu is not None
          assert self.build.environment.machines.host.cpu is not None
          assert self.build.environment.machines.target.cpu is not None
  
          self.builtin['build_machine'] = \
              OBJ.MachineHolder(self.build.environment.machines.build, self)
          self.builtin['host_machine'] = \
              OBJ.MachineHolder(self.build.environment.machines.host, self)
          self.builtin['target_machine'] = \
              OBJ.MachineHolder(self.build.environment.machines.target, self)
  
      def build_func_dict(self):
          self.funcs.update({'add_global_arguments': self.func_add_global_arguments,
                             'add_project_arguments': self.func_add_project_arguments,
                             'add_global_link_arguments': self.func_add_global_link_arguments,
                             'add_project_link_arguments': self.func_add_project_link_arguments,
                             'add_test_setup': self.func_add_test_setup,
                             'add_languages': self.func_add_languages,
                             'alias_target': self.func_alias_target,
                             'assert': self.func_assert,
                             'benchmark': self.func_benchmark,
                             'build_target': self.func_build_target,
                             'configuration_data': self.func_configuration_data,
                             'configure_file': self.func_configure_file,
                             'custom_target': self.func_custom_target,
                             'declare_dependency': self.func_declare_dependency,
                             'dependency': self.func_dependency,
                             'disabler': self.func_disabler,
                             'environment': self.func_environment,
                             'error': self.func_error,
                             'executable': self.func_executable,
                             'generator': self.func_generator,
                             'gettext': self.func_gettext,
                             'get_option': self.func_get_option,
                             'get_variable': self.func_get_variable,
                             'files': self.func_files,
                             'find_library': self.func_find_library,
                             'find_program': self.func_find_program,
                             'include_directories': self.func_include_directories,
                             'import': self.func_import,
                             'install_data': self.func_install_data,
                             'install_headers': self.func_install_headers,
                             'install_man': self.func_install_man,
                             'install_emptydir': self.func_install_emptydir,
                             'install_subdir': self.func_install_subdir,
                             'is_disabler': self.func_is_disabler,
                             'is_variable': self.func_is_variable,
                             'jar': self.func_jar,
                             'join_paths': self.func_join_paths,
                             'library': self.func_library,
                             'message': self.func_message,
                             'warning': self.func_warning,
                             'option': self.func_option,
                             'project': self.func_project,
                             'run_target': self.func_run_target,
                             'run_command': self.func_run_command,
                             'set_variable': self.func_set_variable,
                             'subdir': self.func_subdir,
                             'subdir_done': self.func_subdir_done,
                             'subproject': self.func_subproject,
                             'summary': self.func_summary,
                             'shared_library': self.func_shared_lib,
                             'shared_module': self.func_shared_module,
                             'static_library': self.func_static_lib,
                             'both_libraries': self.func_both_lib,
                             'test': self.func_test,
                             'unset_variable': self.func_unset_variable,
                             'vcs_tag': self.func_vcs_tag,
                             'range': self.func_range,
                             })
          if 'MESON_UNIT_TEST' in os.environ:
              self.funcs.update({'exception': self.func_exception})
  
      def build_holder_map(self) -> None:
          '''
              Build a mapping of `HoldableObject` types to their corresponding
              `ObjectHolder`s. This mapping is used in `InterpreterBase` to automatically
              holderify all returned values from methods and functions.
          '''
          self.holder_map.update({
              # Primitives
              list: P_OBJ.ArrayHolder,
              dict: P_OBJ.DictHolder,
              int: P_OBJ.IntegerHolder,
              bool: P_OBJ.BooleanHolder,
              str: P_OBJ.StringHolder,
              P_OBJ.MesonVersionString: P_OBJ.MesonVersionStringHolder,
  
              # Meson types
              mesonlib.File: OBJ.FileHolder,
              build.SharedLibrary: OBJ.SharedLibraryHolder,
              build.StaticLibrary: OBJ.StaticLibraryHolder,
              build.BothLibraries: OBJ.BothLibrariesHolder,
              build.SharedModule: OBJ.SharedModuleHolder,
              build.Executable: OBJ.ExecutableHolder,
              build.Jar: OBJ.JarHolder,
              build.CustomTarget: OBJ.CustomTargetHolder,
              build.CustomTargetIndex: OBJ.CustomTargetIndexHolder,
              build.Generator: OBJ.GeneratorHolder,
              build.GeneratedList: OBJ.GeneratedListHolder,
              build.ExtractedObjects: OBJ.GeneratedObjectsHolder,
              build.RunTarget: OBJ.RunTargetHolder,
              build.AliasTarget: OBJ.AliasTargetHolder,
              build.Headers: OBJ.HeadersHolder,
              build.Man: OBJ.ManHolder,
              build.EmptyDir: OBJ.EmptyDirHolder,
              build.Data: OBJ.DataHolder,
              build.InstallDir: OBJ.InstallDirHolder,
              build.IncludeDirs: OBJ.IncludeDirsHolder,
              build.EnvironmentVariables: OBJ.EnvironmentVariablesHolder,
              compilers.RunResult: compilerOBJ.TryRunResultHolder,
              dependencies.ExternalLibrary: OBJ.ExternalLibraryHolder,
              coredata.UserFeatureOption: OBJ.FeatureOptionHolder,
              envconfig.MachineInfo: OBJ.MachineHolder,
          })
  
          '''
              Build a mapping of `HoldableObject` base classes to their
              corresponding `ObjectHolder`s. The difference to `self.holder_map`
              is that the keys here define an upper bound instead of requiring an
              exact match.
  
              The mappings defined here are only used when there was no direct hit
              found in `self.holder_map`.
          '''
          self.bound_holder_map.update({
              dependencies.Dependency: OBJ.DependencyHolder,
              ExternalProgram: OBJ.ExternalProgramHolder,
              compilers.Compiler: compilerOBJ.CompilerHolder,
              ModuleObject: OBJ.ModuleObjectHolder,
              MutableModuleObject: OBJ.MutableModuleObjectHolder,
          })
  
      def append_holder_map(self, held_type: T.Type[mesonlib.HoldableObject], holder_type: T.Type[ObjectHolder]) -> None:
          '''
              Adds one additional mapping to the `holder_map`.
  
              The intended use for this function is in the `initialize` method of
              modules to register custom object holders.
          '''
          self.holder_map.update({
              held_type: holder_type
          })
  
      def process_new_values(self, invalues: T.List[T.Union[TYPE_var, ExecutableSerialisation]]) -> None:
          invalues = listify(invalues)
          for v in invalues:
              if isinstance(v, ObjectHolder):
                  raise InterpreterException('Modules must not return ObjectHolders')
              if isinstance(v, (build.BuildTarget, build.CustomTarget, build.RunTarget)):
                  self.add_target(v.name, v)
              elif isinstance(v, list):
                  self.process_new_values(v)
              elif isinstance(v, ExecutableSerialisation):
                  v.subproject = self.subproject
                  self.build.install_scripts.append(v)
              elif isinstance(v, build.Data):
                  self.build.data.append(v)
              elif isinstance(v, dependencies.InternalDependency):
                  # FIXME: This is special cased and not ideal:
                  # The first source is our new VapiTarget, the rest are deps
                  self.process_new_values(v.sources[0])
              elif isinstance(v, build.InstallDir):
                  self.build.install_dirs.append(v)
              elif isinstance(v, Test):
                  self.build.tests.append(v)
              elif isinstance(v, (int, str, bool, Disabler, ObjectHolder, build.GeneratedList,
                                  ExternalProgram)):
                  pass
              else:
                  raise InterpreterException(f'Module returned a value of unknown type {v!r}.')
  
      def get_build_def_files(self) -> T.List[str]:
          return self.build_def_files
  
      def add_build_def_file(self, f: mesonlib.FileOrString) -> None:
          # Use relative path for files within source directory, and absolute path
          # for system files. Skip files within build directory. Also skip not regular
          # files (e.g. /dev/stdout) Normalize the path to avoid duplicates, this
          # is especially important to convert '/' to '\' on Windows.
          if isinstance(f, mesonlib.File):
              if f.is_built:
                  return
              f = os.path.normpath(f.relative_name())
          elif os.path.isfile(f) and not f.startswith('/dev'):
              srcdir = Path(self.environment.get_source_dir())
              builddir = Path(self.environment.get_build_dir())
              try:
                  f = Path(f).resolve()
              except OSError:
                  f = Path(f)
                  s = f.stat()
                  if (hasattr(s, 'st_file_attributes') and
                          s.st_file_attributes & stat.FILE_ATTRIBUTE_REPARSE_POINT != 0 and
                          s.st_reparse_tag == stat.IO_REPARSE_TAG_APPEXECLINK):
                      # This is a Windows Store link which we can't
                      # resolve, so just do our best otherwise.
                      f = f.parent.resolve() / f.name
                  else:
                      raise
              if builddir in f.parents:
                  return
              if srcdir in f.parents:
                  f = f.relative_to(srcdir)
              f = str(f)
          else:
              return
          if f not in self.build_def_files:
              self.build_def_files.append(f)
  
      def get_variables(self):
          return self.variables
  
      def check_stdlibs(self):
          machine_choices = [MachineChoice.HOST]
          if self.coredata.is_cross_build():
              machine_choices.append(MachineChoice.BUILD)
          for for_machine in machine_choices:
              props = self.build.environment.properties[for_machine]
              for l in self.coredata.compilers[for_machine].keys():
                  try:
                      di = mesonlib.stringlistify(props.get_stdlib(l))
                  except KeyError:
                      continue
                  if len(di) == 1:
                      FeatureNew.single_use('stdlib without variable name', '0.56.0', self.subproject)
                  kwargs = {'native': for_machine is MachineChoice.BUILD,
                            }
                  name = l + '_stdlib'
                  df = DependencyFallbacksHolder(self, [name])
                  df.set_fallback(di)
                  dep = df.lookup(kwargs, force_fallback=True)
                  self.build.stdlibs[for_machine][l] = dep
  
      def _import_module(self, modname: str, required: bool) -> T.Union[ExtensionModule, NewExtensionModule, NotFoundExtensionModule]:
          if modname in self.modules:
              return self.modules[modname]
          try:
              module = importlib.import_module('mesonbuild.modules.' + modname)
          except ImportError:
              if required:
                  raise InvalidArguments(f'Module "{modname}" does not exist')
              ext_module = NotFoundExtensionModule()
          else:
              ext_module = module.initialize(self)
              assert isinstance(ext_module, (ExtensionModule, NewExtensionModule))
              self.build.modules.append(modname)
          self.modules[modname] = ext_module
          return ext_module
  
      @typed_pos_args('import', str)
      @typed_kwargs(
          'import',
          REQUIRED_KW.evolve(since='0.59.0'),
          KwargInfo('disabler', bool, default=False, since='0.59.0'),
      )
      @disablerIfNotFound
      def func_import(self, node: mparser.BaseNode, args: T.Tuple[str],
                      kwargs: 'kwargs.FuncImportModule') -> T.Union[ExtensionModule, NewExtensionModule, NotFoundExtensionModule]:
          modname = args[0]
          disabled, required, _ = extract_required_kwarg(kwargs, self.subproject)
          if disabled:
              return NotFoundExtensionModule()
  
          if modname.startswith('unstable-'):
              plainname = modname.split('-', 1)[1]
              try:
                  # check if stable module exists
                  mod = self._import_module(plainname, required)
                  # XXX: this is actually not helpful, since it doesn't do a version check
                  mlog.warning(f'Module {modname} is now stable, please use the {plainname} module instead.')
                  return mod
              except InvalidArguments:
                  mlog.warning(f'Module {modname} has no backwards or forwards compatibility and might not exist in future releases.', location=node)
                  modname = 'unstable_' + plainname
          return self._import_module(modname, required)
  
      @typed_pos_args('files', varargs=str)
      @noKwargs
      def func_files(self, node: mparser.FunctionNode, args: T.Tuple[T.List[str]], kwargs: 'TYPE_kwargs') -> T.List[mesonlib.File]:
          return [mesonlib.File.from_source_file(self.environment.source_dir, self.subdir, fname) for fname in args[0]]
  
      # Used by declare_dependency() and pkgconfig.generate()
      def extract_variables(self, kwargs, argname='variables', list_new=False, dict_new=False):
          variables = kwargs.get(argname, {})
          if isinstance(variables, dict):
              if dict_new and variables:
                  FeatureNew.single_use('variables as dictionary', '0.56.0', self.subproject)
          else:
              varlist = mesonlib.stringlistify(variables)
              if list_new:
                  FeatureNew.single_use('variables as list of strings', '0.56.0', self.subproject)
              variables = collections.OrderedDict()
              for v in varlist:
                  try:
                      (key, value) = v.split('=', 1)
                  except ValueError:
                      raise InterpreterException(f'Variable {v!r} must have a value separated by equals sign.')
                  variables[key.strip()] = value.strip()
          for k, v in variables.items():
              if not k or not v:
                  raise InterpreterException('Empty variable name or value')
              if any(c.isspace() for c in k):
                  raise InterpreterException(f'Invalid whitespace in variable name "{k}"')
              if not isinstance(v, str):
                  raise InterpreterException('variables values must be strings.')
          return variables
  
      @FeatureNewKwargs('declare_dependency', '0.46.0', ['link_whole'])
      @FeatureNewKwargs('declare_dependency', '0.54.0', ['variables'])
      @permittedKwargs({'include_directories', 'link_with', 'sources', 'dependencies',
                        'compile_args', 'link_args', 'link_whole', 'version',
                        'variables'})
      @noPosargs
      def func_declare_dependency(self, node, args, kwargs):
          version = kwargs.get('version', self.project_version)
          if not isinstance(version, str):
              raise InterpreterException('Version must be a string.')
          incs = self.extract_incdirs(kwargs)
          libs = extract_as_list(kwargs, 'link_with')
          libs_whole = extract_as_list(kwargs, 'link_whole')
          sources = extract_as_list(kwargs, 'sources')
          sources = listify(self.source_strings_to_files(sources))
          deps = extract_as_list(kwargs, 'dependencies')
          compile_args = mesonlib.stringlistify(kwargs.get('compile_args', []))
          link_args = mesonlib.stringlistify(kwargs.get('link_args', []))
          variables = self.extract_variables(kwargs, list_new=True)
          final_deps = []
          for d in deps:
              if not isinstance(d, (dependencies.Dependency, dependencies.ExternalLibrary, dependencies.InternalDependency)):
                  raise InterpreterException('Dependencies must be external deps')
              final_deps.append(d)
          for l in libs:
              if isinstance(l, dependencies.Dependency):
                  raise InterpreterException('''Entries in "link_with" may only be self-built targets,
  external dependencies (including libraries) must go to "dependencies".''')
          dep = dependencies.InternalDependency(version, incs, compile_args,
                                                link_args, libs, libs_whole, sources, final_deps,
                                                variables)
          return dep
  
      @typed_pos_args('assert', bool, optargs=[str])
      @noKwargs
      def func_assert(self, node: mparser.FunctionNode, args: T.Tuple[bool, T.Optional[str]],
                      kwargs: 'TYPE_kwargs') -> None:
          value, message = args
          if message is None:
              FeatureNew.single_use('assert function without message argument', '0.53.0', self.subproject)
  
          if not value:
              if message is None:
                  from ..ast import AstPrinter
                  printer = AstPrinter()
                  node.args.arguments[0].accept(printer)
                  message = printer.result
              raise InterpreterException('Assert failed: ' + message)
  
      def validate_arguments(self, args, argcount, arg_types):
          if argcount is not None:
              if argcount != len(args):
                  raise InvalidArguments(f'Expected {argcount} arguments, got {len(args)}.')
          for actual, wanted in zip(args, arg_types):
              if wanted is not None:
                  if not isinstance(actual, wanted):
                      raise InvalidArguments('Incorrect argument type.')
  
      @FeatureNewKwargs('run_command', '0.50.0', ['env'])
      @FeatureNewKwargs('run_command', '0.47.0', ['check', 'capture'])
      @permittedKwargs({'check', 'capture', 'env'})
      def func_run_command(self, node, args, kwargs):
          return self.run_command_impl(node, args, kwargs)
  
      def run_command_impl(self,
                           node: mparser.BaseNode,
                           args: T.Sequence[TYPE_nvar],
                           kwargs: TYPE_nkwargs,
                           in_builddir: bool = False) -> RunProcess:
          if len(args) < 1:
              raise InterpreterException('Not enough arguments')
          cmd, *cargs = args
          capture = kwargs.get('capture', True)
          srcdir = self.environment.get_source_dir()
          builddir = self.environment.get_build_dir()
  
          check = kwargs.get('check')
          if check is None:
              mlog.warning(implicit_check_false_warning, once=True)
              check = False
  
          if not isinstance(check, bool):
              raise InterpreterException('Check must be boolean.')
  
          env = self.unpack_env_kwarg(kwargs)
  
          m = 'must be a string, or the output of find_program(), files() '\
              'or configure_file(), or a compiler object; not {!r}'
          expanded_args = []
          if isinstance(cmd, build.Executable):
              progname = node.args.arguments[0].value
              msg = 'Program {!r} was overridden with the compiled executable {!r}'\
                      ' and therefore cannot be used during configuration'
              raise InterpreterException(msg.format(progname, cmd.description()))
          if isinstance(cmd, ExternalProgram):
              if not cmd.found():
                  raise InterpreterException(f'command {cmd.get_name()!r} not found or not executable')
          elif isinstance(cmd, compilers.Compiler):
              exelist = cmd.get_exelist()
              cmd = exelist[0]
              prog = ExternalProgram(cmd, silent=True)
              if not prog.found():
                  raise InterpreterException(f'Program {cmd!r} not found or not executable')
              cmd = prog
              expanded_args = exelist[1:]
          else:
              if isinstance(cmd, mesonlib.File):
                  cmd = cmd.absolute_path(srcdir, builddir)
              elif not isinstance(cmd, str):
                  raise InterpreterException('First argument ' + m.format(cmd))
              # Prefer scripts in the current source directory
              search_dir = os.path.join(srcdir, self.subdir)
              prog = ExternalProgram(cmd, silent=True, search_dir=search_dir)
              if not prog.found():
                  raise InterpreterException(f'Program or command {cmd!r} not found or not executable')
              cmd = prog
          for a in listify(cargs):
              if isinstance(a, str):
                  expanded_args.append(a)
              elif isinstance(a, mesonlib.File):
                  expanded_args.append(a.absolute_path(srcdir, builddir))
              elif isinstance(a, ExternalProgram):
                  expanded_args.append(a.get_path())
              else:
                  raise InterpreterException('Arguments ' + m.format(a))
          # If any file that was used as an argument to the command
          # changes, we must re-run the configuration step.
          self.add_build_def_file(cmd.get_path())
          for a in expanded_args:
              if not os.path.isabs(a):
                  a = os.path.join(builddir if in_builddir else srcdir, self.subdir, a)
              self.add_build_def_file(a)
          return RunProcess(cmd, expanded_args, env, srcdir, builddir, self.subdir,
                            self.environment.get_build_command() + ['introspect'],
                            in_builddir=in_builddir, check=check, capture=capture)
  
      def func_gettext(self, nodes, args, kwargs):
          raise InterpreterException('Gettext() function has been moved to module i18n. Import it and use i18n.gettext() instead')
  
      def func_option(self, nodes, args, kwargs):
          raise InterpreterException('Tried to call option() in build description file. All options must be in the option file.')
  
      @FeatureNewKwargs('subproject', '0.38.0', ['default_options'])
      @permittedKwargs({'version', 'default_options', 'required'})
      @typed_pos_args('subproject', str)
      def func_subproject(self, nodes: mparser.BaseNode, args: T.Tuple[str], kwargs: 'TYPE_kwargs') -> SubprojectHolder:
          return self.do_subproject(args[0], 'meson', kwargs)
  
      def disabled_subproject(self, subp_name, disabled_feature=None, exception=None):
          sub = SubprojectHolder(NullSubprojectInterpreter(), os.path.join(self.subproject_dir, subp_name),
                                 disabled_feature=disabled_feature, exception=exception)
          self.subprojects[subp_name] = sub
          self.coredata.initialized_subprojects.add(subp_name)
          return sub
  
      def do_subproject(self, subp_name: str, method: str, kwargs):
          disabled, required, feature = extract_required_kwarg(kwargs, self.subproject)
          if disabled:
              mlog.log('Subproject', mlog.bold(subp_name), ':', 'skipped: feature', mlog.bold(feature), 'disabled')
              return self.disabled_subproject(subp_name, disabled_feature=feature)
  
          default_options = mesonlib.stringlistify(kwargs.get('default_options', []))
          default_options = coredata.create_options_dict(default_options, subp_name)
  
          if subp_name == '':
              raise InterpreterException('Subproject name must not be empty.')
          if subp_name[0] == '.':
              raise InterpreterException('Subproject name must not start with a period.')
          if '..' in subp_name:
              raise InterpreterException('Subproject name must not contain a ".." path segment.')
          if os.path.isabs(subp_name):
              raise InterpreterException('Subproject name must not be an absolute path.')
          if has_path_sep(subp_name):
              mlog.warning('Subproject name has a path separator. This may cause unexpected behaviour.',
                           location=self.current_node)
          if subp_name in self.subproject_stack:
              fullstack = self.subproject_stack + [subp_name]
              incpath = ' => '.join(fullstack)
              raise InvalidCode(f'Recursive include of subprojects: {incpath}.')
          if subp_name in self.subprojects:
              subproject = self.subprojects[subp_name]
              if required and not subproject.found():
                  raise InterpreterException(f'Subproject "{subproject.subdir}" required but not found.')
              return subproject
  
          r = self.environment.wrap_resolver
          try:
              subdir = r.resolve(subp_name, method)
          except wrap.WrapException as e:
              if not required:
                  mlog.log(e)
                  mlog.log('Subproject ', mlog.bold(subp_name), 'is buildable:', mlog.red('NO'), '(disabling)')
                  return self.disabled_subproject(subp_name, exception=e)
              raise e
  
          subdir_abs = os.path.join(self.environment.get_source_dir(), subdir)
          os.makedirs(os.path.join(self.build.environment.get_build_dir(), subdir), exist_ok=True)
          self.global_args_frozen = True
  
          stack = ':'.join(self.subproject_stack + [subp_name])
          m = ['\nExecuting subproject', mlog.bold(stack)]
          if method != 'meson':
              m += ['method', mlog.bold(method)]
          mlog.log(*m, '\n', nested=False)
  
          try:
              if method == 'meson':
                  return self._do_subproject_meson(subp_name, subdir, default_options, kwargs)
              elif method == 'cmake':
                  return self._do_subproject_cmake(subp_name, subdir, subdir_abs, default_options, kwargs)
              else:
                  raise mesonlib.MesonBugException(f'The method {method} is invalid for the subproject {subp_name}')
          # Invalid code is always an error
          except InvalidCode:
              raise
          except Exception as e:
              if not required:
                  with mlog.nested(subp_name):
                      # Suppress the 'ERROR:' prefix because this exception is not
                      # fatal and VS CI treat any logs with "ERROR:" as fatal.
                      mlog.exception(e, prefix=mlog.yellow('Exception:'))
                  mlog.log('\nSubproject', mlog.bold(subdir), 'is buildable:', mlog.red('NO'), '(disabling)')
                  return self.disabled_subproject(subp_name, exception=e)
              raise e
  
      def _do_subproject_meson(self, subp_name: str, subdir: str, default_options, kwargs,
                               ast: T.Optional[mparser.CodeBlockNode] = None,
                               build_def_files: T.Optional[T.List[str]] = None,
                               is_translated: bool = False) -> SubprojectHolder:
          with mlog.nested(subp_name):
              new_build = self.build.copy()
              subi = Interpreter(new_build, self.backend, subp_name, subdir, self.subproject_dir,
                                 default_options, ast=ast, is_translated=is_translated)
              # Those lists are shared by all interpreters. That means that
              # even if the subproject fails, any modification that the subproject
              # made to those lists will affect the parent project.
              subi.subprojects = self.subprojects
              subi.modules = self.modules
              subi.holder_map = self.holder_map
              subi.bound_holder_map = self.bound_holder_map
              subi.summary = self.summary
  
              subi.subproject_stack = self.subproject_stack + [subp_name]
              current_active = self.active_projectname
              current_warnings_counter = mlog.log_warnings_counter
              mlog.log_warnings_counter = 0
              subi.run()
              subi_warnings = mlog.log_warnings_counter
              mlog.log_warnings_counter = current_warnings_counter
  
              mlog.log('Subproject', mlog.bold(subp_name), 'finished.')
  
          mlog.log()
  
          if 'version' in kwargs:
              pv = subi.project_version
              wanted = kwargs['version']
              if pv == 'undefined' or not mesonlib.version_compare_many(pv, wanted)[0]:
                  raise InterpreterException(f'Subproject {subp_name} version is {pv} but {wanted} required.')
          self.active_projectname = current_active
          self.subprojects.update(subi.subprojects)
          self.subprojects[subp_name] = SubprojectHolder(subi, subdir, warnings=subi_warnings)
          # Duplicates are possible when subproject uses files from project root
          if build_def_files:
              self.build_def_files = list(set(self.build_def_files + build_def_files))
          # We always need the subi.build_def_files, to propgate sub-sub-projects
          self.build_def_files = list(set(self.build_def_files + subi.build_def_files))
          self.build.merge(subi.build)
          self.build.subprojects[subp_name] = subi.project_version
          self.coredata.initialized_subprojects.add(subp_name)
          return self.subprojects[subp_name]
  
      def _do_subproject_cmake(self, subp_name, subdir, subdir_abs, default_options, kwargs):
          with mlog.nested(subp_name):
              new_build = self.build.copy()
              prefix = self.coredata.options[OptionKey('prefix')].value
  
              from ..modules.cmake import CMakeSubprojectOptions
              options = kwargs.get('options', CMakeSubprojectOptions())
              if not isinstance(options, CMakeSubprojectOptions):
                  raise InterpreterException('"options" kwarg must be CMakeSubprojectOptions'
                                             ' object (created by cmake.subproject_options())')
  
              cmake_options = mesonlib.stringlistify(kwargs.get('cmake_options', []))
              cmake_options += options.cmake_options
              cm_int = CMakeInterpreter(new_build, Path(subdir), Path(subdir_abs), Path(prefix), new_build.environment, self.backend)
              cm_int.initialise(cmake_options)
              cm_int.analyse()
  
              # Generate a meson ast and execute it with the normal do_subproject_meson
              ast = cm_int.pretend_to_be_meson(options.target_options)
  
              mlog.log()
              with mlog.nested('cmake-ast'):
                  mlog.log('Processing generated meson AST')
  
                  # Debug print the generated meson file
                  from ..ast import AstIndentationGenerator, AstPrinter
                  printer = AstPrinter()
                  ast.accept(AstIndentationGenerator())
                  ast.accept(printer)
                  printer.post_process()
                  meson_filename = os.path.join(self.build.environment.get_build_dir(), subdir, 'meson.build')
                  with open(meson_filename, "w", encoding='utf-8') as f:
                      f.write(printer.result)
  
                  mlog.log('Build file:', meson_filename)
                  mlog.cmd_ci_include(meson_filename)
                  mlog.log()
  
              result = self._do_subproject_meson(subp_name, subdir, default_options, kwargs, ast, cm_int.bs_files, is_translated=True)
              result.cm_interpreter = cm_int
  
          mlog.log()
          return result
  
      def get_option_internal(self, optname: str):
          key = OptionKey.from_string(optname).evolve(subproject=self.subproject)
  
          if not key.is_project():
              for opts in [self.coredata.options, compilers.base_options]:
                  v = opts.get(key)
                  if v is None or v.yielding:
                      v = opts.get(key.as_root())
                  if v is not None:
                      return v
  
          try:
              opt = self.coredata.options[key]
              if opt.yielding and key.subproject and key.as_root() in self.coredata.options:
                  popt = self.coredata.options[key.as_root()]
                  if type(opt) is type(popt):
                      opt = popt
                  else:
                      # Get class name, then option type as a string
                      opt_type = opt.__class__.__name__[4:][:-6].lower()
                      popt_type = popt.__class__.__name__[4:][:-6].lower()
                      # This is not a hard error to avoid dependency hell, the workaround
                      # when this happens is to simply set the subproject's option directly.
                      mlog.warning('Option {0!r} of type {1!r} in subproject {2!r} cannot yield '
                                   'to parent option of type {3!r}, ignoring parent value. '
                                   'Use -D{2}:{0}=value to set the value for this option manually'
                                   '.'.format(optname, opt_type, self.subproject, popt_type),
                                   location=self.current_node)
              return opt
          except KeyError:
              pass
  
          raise InterpreterException(f'Tried to access unknown option {optname!r}.')
  
      @typed_pos_args('get_option', str)
      @noKwargs
      def func_get_option(self, nodes: mparser.BaseNode, args: T.Tuple[str],
                          kwargs: 'TYPE_kwargs') -> T.Union[coredata.UserOption, 'TYPE_var']:
          optname = args[0]
          if ':' in optname:
              raise InterpreterException('Having a colon in option name is forbidden, '
                                         'projects are not allowed to directly access '
                                         'options of other subprojects.')
          opt = self.get_option_internal(optname)
          if isinstance(opt, coredata.UserFeatureOption):
              opt.name = optname
              return opt
          elif isinstance(opt, coredata.UserOption):
              return opt.value
          return opt
  
      @typed_pos_args('configuration_data', optargs=[dict])
      @noKwargs
      def func_configuration_data(self, node: mparser.BaseNode, args: T.Optional[dict], kwargs: 'TYPE_kwargs') -> ConfigurationDataObject:
          initial_values = args[0]
          if initial_values is not None:
              FeatureNew.single_use('configuration_data dictionary', '0.49.0', self.subproject)
          else:
              initial_values = {}
          return ConfigurationDataObject(self.subproject, initial_values)
  
      def set_backend(self):
          # The backend is already set when parsing subprojects
          if self.backend is not None:
              return
          backend = self.coredata.get_option(OptionKey('backend'))
          from ..backend import backends
          self.backend = backends.get_backend_from_name(backend, self.build, self)
  
          if self.backend is None:
              raise InterpreterException(f'Unknown backend "{backend}".')
          if backend != self.backend.name:
              if self.backend.name.startswith('vs'):
                  mlog.log('Auto detected Visual Studio backend:', mlog.bold(self.backend.name))
              self.coredata.set_option(OptionKey('backend'), self.backend.name)
  
          # Only init backend options on first invocation otherwise it would
          # override values previously set from command line.
          if self.environment.first_invocation:
              self.coredata.init_backend_options(backend)
  
          options = {k: v for k, v in self.environment.options.items() if k.is_backend()}
          self.coredata.set_options(options)
  
      @permittedKwargs({'version', 'meson_version', 'default_options', 'license', 'subproject_dir'})
      @typed_pos_args('project', str, varargs=str)
      def func_project(self, node: mparser.FunctionNode, args: T.Tuple[str, T.List[str]], kwargs: 'TYPE_kwargs') -> None:
          proj_name, proj_langs = args
          if ':' in proj_name:
              raise InvalidArguments(f"Project name {proj_name!r} must not contain ':'")
  
          # This needs to be evaluated as early as possible, as meson uses this
          # for things like deprecation testing.
          if 'meson_version' in kwargs:
              cv = coredata.version
              pv = kwargs['meson_version']
              if not mesonlib.version_compare(cv, pv):
                  raise InterpreterException(f'Meson version is {cv} but project requires {pv}')
              mesonlib.project_meson_versions[self.subproject] = kwargs['meson_version']
  
          if os.path.exists(self.option_file):
              oi = optinterpreter.OptionInterpreter(self.subproject)
              oi.process(self.option_file)
              self.coredata.update_project_options(oi.options)
              self.add_build_def_file(self.option_file)
  
          # Do not set default_options on reconfigure otherwise it would override
          # values previously set from command line. That means that changing
          # default_options in a project will trigger a reconfigure but won't
          # have any effect.
          self.project_default_options = mesonlib.stringlistify(kwargs.get('default_options', []))
          self.project_default_options = coredata.create_options_dict(self.project_default_options, self.subproject)
  
          # If this is the first invocation we always need to initialize
          # builtins, if this is a subproject that is new in a re-invocation we
          # need to initialize builtins for that
          if self.environment.first_invocation or (self.subproject != '' and self.subproject not in self.coredata.initialized_subprojects):
              default_options = self.project_default_options.copy()
              default_options.update(self.default_project_options)
              self.coredata.init_builtins(self.subproject)
          else:
              default_options = {}
          self.coredata.set_default_options(default_options, self.subproject, self.environment)
  
          if not self.is_subproject():
              self.build.project_name = proj_name
          self.active_projectname = proj_name
          version = kwargs.get('version', 'undefined')
          if isinstance(version, list):
              if len(version) != 1:
                  raise InvalidCode('Version argument is an array with more than one entry.')
              version = version[0]
          if isinstance(version, mesonlib.File):
              FeatureNew.single_use('version from file', '0.57.0', self.subproject)
              self.add_build_def_file(version)
              ifname = version.absolute_path(self.environment.source_dir,
                                             self.environment.build_dir)
              try:
                  ver_data = Path(ifname).read_text(encoding='utf-8').split('\n')
              except FileNotFoundError:
                  raise InterpreterException('Version file not found.')
              if len(ver_data) == 2 and ver_data[1] == '':
                  ver_data = ver_data[0:1]
              if len(ver_data) != 1:
                  raise InterpreterException('Version file must contain exactly one line of text.')
              self.project_version = ver_data[0]
          elif isinstance(version, str):
              self.project_version = version
          else:
              raise InvalidCode('The version keyword argument must be a string or a file.')
          if self.build.project_version is None:
              self.build.project_version = self.project_version
          proj_license = mesonlib.stringlistify(kwargs.get('license', 'unknown'))
          self.build.dep_manifest[proj_name] = build.DepManifest(self.project_version, proj_license)
          if self.subproject in self.build.projects:
              raise InvalidCode('Second call to project().')
  
          # spdirname is the subproject_dir for this project, relative to self.subdir.
          # self.subproject_dir is the subproject_dir for the main project, relative to top source dir.
          spdirname = kwargs.get('subproject_dir')
          if spdirname:
              if not isinstance(spdirname, str):
                  raise InterpreterException('Subproject_dir must be a string')
              if os.path.isabs(spdirname):
                  raise InterpreterException('Subproject_dir must not be an absolute path.')
              if spdirname.startswith('.'):
                  raise InterpreterException('Subproject_dir must not begin with a period.')
              if '..' in spdirname:
                  raise InterpreterException('Subproject_dir must not contain a ".." segment.')
              if not self.is_subproject():
                  self.subproject_dir = spdirname
          else:
              spdirname = 'subprojects'
          self.build.subproject_dir = self.subproject_dir
  
          # Load wrap files from this (sub)project.
          wrap_mode = self.coredata.get_option(OptionKey('wrap_mode'))
          if not self.is_subproject() or wrap_mode != WrapMode.nopromote:
              subdir = os.path.join(self.subdir, spdirname)
              r = wrap.Resolver(self.environment.get_source_dir(), subdir, self.subproject, wrap_mode)
              if self.is_subproject():
                  self.environment.wrap_resolver.merge_wraps(r)
              else:
                  self.environment.wrap_resolver = r
  
          self.build.projects[self.subproject] = proj_name
          mlog.log('Project name:', mlog.bold(proj_name))
          mlog.log('Project version:', mlog.bold(self.project_version))
  
          if not self.is_subproject():
              # We have to activate VS before adding languages and before calling
              # self.set_backend() otherwise it wouldn't be able to detect which
              # vs backend version we need. But after setting default_options in case
              # the project sets vs backend by default.
              backend = self.coredata.get_option(OptionKey('backend'))
              force_vsenv = self.user_defined_options.vsenv or backend.startswith('vs')
              if mesonlib.setup_vsenv(force_vsenv):
                  self.build.need_vsenv = True
  
          self.add_languages(proj_langs, True, MachineChoice.HOST)
          self.add_languages(proj_langs, False, MachineChoice.BUILD)
  
          self.set_backend()
          if not self.is_subproject():
              self.check_stdlibs()
  
      @typed_kwargs('add_languages', KwargInfo('native', (bool, NoneType), since='0.54.0'), REQUIRED_KW)
      @typed_pos_args('add_languages', varargs=str)
      def func_add_languages(self, node: mparser.FunctionNode, args: T.Tuple[T.List[str]], kwargs: 'kwargs.FuncAddLanguages') -> bool:
          langs = args[0]
          disabled, required, feature = extract_required_kwarg(kwargs, self.subproject)
          native = kwargs['native']
  
          if disabled:
              for lang in sorted(langs, key=compilers.sort_clink):
                  mlog.log('Compiler for language', mlog.bold(lang), 'skipped: feature', mlog.bold(feature), 'disabled')
              return False
          if native is not None:
              return self.add_languages(langs, required, self.machine_from_native_kwarg(kwargs))
          else:
              # absent 'native' means 'both' for backwards compatibility
              tv = FeatureNew.get_target_version(self.subproject)
              if FeatureNew.check_version(tv, '0.54.0'):
                  mlog.warning('add_languages is missing native:, assuming languages are wanted for both host and build.',
                               location=self.current_node)
  
              success = self.add_languages(langs, False, MachineChoice.BUILD)
              success &= self.add_languages(langs, required, MachineChoice.HOST)
              return success
  
      @noArgsFlattening
      @noKwargs
      def func_message(self, node, args, kwargs):
          if len(args) > 1:
              FeatureNew.single_use('message with more than one argument', '0.54.0', self.subproject)
          args_str = [stringifyUserArguments(i) for i in args]
          self.message_impl(args_str)
  
      def message_impl(self, args):
          mlog.log(mlog.bold('Message:'), *args)
  
      @noArgsFlattening
      @FeatureNewKwargs('summary', '0.54.0', ['list_sep'])
      @permittedKwargs({'section', 'bool_yn', 'list_sep'})
      @FeatureNew('summary', '0.53.0')
      def func_summary(self, node, args, kwargs):
          if len(args) == 1:
              if not isinstance(args[0], dict):
                  raise InterpreterException('Summary first argument must be dictionary.')
              values = args[0]
          elif len(args) == 2:
              if not isinstance(args[0], str):
                  raise InterpreterException('Summary first argument must be string.')
              values = {args[0]: args[1]}
          else:
              raise InterpreterException('Summary accepts at most 2 arguments.')
          section = kwargs.get('section', '')
          if not isinstance(section, str):
              raise InterpreterException('Summary\'s section keyword argument must be string.')
          self.summary_impl(section, values, kwargs)
  
      def summary_impl(self, section, values, kwargs):
          if self.subproject not in self.summary:
              self.summary[self.subproject] = Summary(self.active_projectname, self.project_version)
          self.summary[self.subproject].add_section(section, values, kwargs, self.subproject)
  
      def _print_summary(self):
          # Add automatic 'Supbrojects' section in main project.
          all_subprojects = collections.OrderedDict()
          for name, subp in sorted(self.subprojects.items()):
              value = subp.found()
              if subp.disabled_feature:
                  value = [value, f'Feature {subp.disabled_feature!r} disabled']
              elif subp.exception:
                  value = [value, str(subp.exception)]
              elif subp.warnings > 0:
                  value = [value, f'{subp.warnings} warnings']
              all_subprojects[name] = value
          if all_subprojects:
              self.summary_impl('Subprojects', all_subprojects,
                                {'bool_yn': True,
                                 'list_sep': ' ',
                                })
          # Add automatic section with all user defined options
          if self.user_defined_options:
              values = collections.OrderedDict()
              if self.user_defined_options.cross_file:
                  values['Cross files'] = self.user_defined_options.cross_file
              if self.user_defined_options.native_file:
                  values['Native files'] = self.user_defined_options.native_file
              sorted_options = sorted(self.user_defined_options.cmd_line_options.items())
              values.update({str(k): v for k, v in sorted_options})
              if values:
                  self.summary_impl('User defined options', values, {})
          # Print all summaries, main project last.
          mlog.log('')  # newline
          main_summary = self.summary.pop('', None)
          for subp_name, summary in sorted(self.summary.items()):
              if self.subprojects[subp_name].found():
                  summary.dump()
          if main_summary:
              main_summary.dump()
  
      @noArgsFlattening
      @FeatureNew('warning', '0.44.0')
      @noKwargs
      def func_warning(self, node, args, kwargs):
          if len(args) > 1:
              FeatureNew.single_use('warning with more than one argument', '0.54.0', self.subproject)
          args_str = [stringifyUserArguments(i) for i in args]
          mlog.warning(*args_str, location=node)
  
      @noArgsFlattening
      @noKwargs
      def func_error(self, node, args, kwargs):
          if len(args) > 1:
              FeatureNew.single_use('error with more than one argument', '0.58.0', self.subproject)
          args_str = [stringifyUserArguments(i) for i in args]
          raise InterpreterException('Problem encountered: ' + ' '.join(args_str))
  
      @noKwargs
      @noPosargs
      def func_exception(self, node, args, kwargs):
          raise Exception()
  
      def add_languages(self, args: T.Sequence[str], required: bool, for_machine: MachineChoice) -> bool:
          success = self.add_languages_for(args, required, for_machine)
          if not self.coredata.is_cross_build():
              self.coredata.copy_build_options_from_regular_ones()
          self._redetect_machines()
          return success
  
      def should_skip_sanity_check(self, for_machine: MachineChoice) -> bool:
          should = self.environment.properties.host.get('skip_sanity_check', False)
          if not isinstance(should, bool):
              raise InterpreterException('Option skip_sanity_check must be a boolean.')
          if for_machine != MachineChoice.HOST and not should:
              return False
          if not self.environment.is_cross_build() and not should:
              return False
          return should
  
      def add_languages_for(self, args: T.List[str], required: bool, for_machine: MachineChoice) -> None:
          args = [a.lower() for a in args]
          langs = set(self.coredata.compilers[for_machine].keys())
          langs.update(args)
          # We'd really like to add cython's default language here, but it can't
          # actually be done because the cython compiler hasn't been initialized,
          # so we can't actually get the option yet. Because we can't know what
          # compiler to add by default, and we don't want to add unnecessary
          # compilers we don't add anything for cython here, and instead do it
          # When the first cython target using a particular language is used.
          if 'vala' in langs and 'c' not in langs:
              FeatureNew.single_use('Adding Vala language without C', '0.59.0', self.subproject)
              args.append('c')
  
          success = True
          for lang in sorted(args, key=compilers.sort_clink):
              clist = self.coredata.compilers[for_machine]
              machine_name = for_machine.get_lower_case_name()
              if lang in clist:
                  comp = clist[lang]
              else:
                  try:
                      comp = compilers.detect_compiler_for(self.environment, lang, for_machine)
                      if comp is None:
                          raise InvalidArguments(f'Tried to use unknown language "{lang}".')
                      if self.should_skip_sanity_check(for_machine):
                          mlog.log_once('Cross compiler sanity tests disabled via the cross file.')
                      else:
                          comp.sanity_check(self.environment.get_scratch_dir(), self.environment)
                  except Exception:
                      if not required:
                          mlog.log('Compiler for language',
                                   mlog.bold(lang), 'for the', machine_name,
                                   'machine not found.')
                          success = False
                          continue
                      else:
                          raise
  
              if for_machine == MachineChoice.HOST or self.environment.is_cross_build():
                  logger_fun = mlog.log
              else:
                  logger_fun = mlog.debug
              logger_fun(comp.get_display_language(), 'compiler for the', machine_name, 'machine:',
                         mlog.bold(' '.join(comp.get_exelist())), comp.get_version_string())
              if comp.linker is not None:
                  logger_fun(comp.get_display_language(), 'linker for the', machine_name, 'machine:',
                             mlog.bold(' '.join(comp.linker.get_exelist())), comp.linker.id, comp.linker.version)
              self.build.ensure_static_linker(comp)
  
          return success
  
      def program_from_file_for(self, for_machine, prognames):
          for p in prognames:
              if isinstance(p, mesonlib.File):
                  continue # Always points to a local (i.e. self generated) file.
              if not isinstance(p, str):
                  raise InterpreterException('Executable name must be a string')
              prog = ExternalProgram.from_bin_list(self.environment, for_machine, p)
              if prog.found():
                  return prog
          return None
  
      def program_from_system(self, args, search_dirs, extra_info):
          # Search for scripts relative to current subdir.
          # Do not cache found programs because find_program('foobar')
          # might give different results when run from different source dirs.
          source_dir = os.path.join(self.environment.get_source_dir(), self.subdir)
          for exename in args:
              if isinstance(exename, mesonlib.File):
                  if exename.is_built:
                      search_dir = os.path.join(self.environment.get_build_dir(),
                                                exename.subdir)
                  else:
                      search_dir = os.path.join(self.environment.get_source_dir(),
                                                exename.subdir)
                  exename = exename.fname
                  extra_search_dirs = []
              elif isinstance(exename, str):
                  search_dir = source_dir
                  extra_search_dirs = search_dirs
              else:
                  raise InvalidArguments(f'find_program only accepts strings and files, not {exename!r}')
              extprog = ExternalProgram(exename, search_dir=search_dir,
                                        extra_search_dirs=extra_search_dirs,
                                        silent=True)
              if extprog.found():
                  extra_info.append(f"({' '.join(extprog.get_command())})")
                  return extprog
  
      def program_from_overrides(self, command_names: T.List[str], extra_info: T.List['mlog.TV_Loggable']) -> \
              T.Optional[T.Union[ExternalProgram, 'OverrideProgram', 'build.Executable']]:
          for name in command_names:
              if not isinstance(name, str):
                  continue
              if name in self.build.find_overrides:
                  exe = self.build.find_overrides[name]
                  extra_info.append(mlog.blue('(overridden)'))
                  return exe
          return None
  
      def store_name_lookups(self, command_names):
          for name in command_names:
              if isinstance(name, str):
                  self.build.searched_programs.add(name)
  
      def add_find_program_override(self, name: str, exe: T.Union[build.Executable, ExternalProgram, 'OverrideProgram']) -> None:
          if name in self.build.searched_programs:
              raise InterpreterException(f'Tried to override finding of executable "{name}" which has already been found.')
          if name in self.build.find_overrides:
              raise InterpreterException(f'Tried to override executable "{name}" which has already been overridden.')
          self.build.find_overrides[name] = exe
  
      def notfound_program(self, args):
          return NonExistingExternalProgram(' '.join(args))
  
      # TODO update modules to always pass `for_machine`. It is bad-form to assume
      # the host machine.
      def find_program_impl(self, args, for_machine: MachineChoice = MachineChoice.HOST,
                            required=True, silent=True, wanted='', search_dirs=None,
                            version_func=None):
          args = mesonlib.listify(args)
  
          extra_info = []
          progobj = self.program_lookup(args, for_machine, required, search_dirs, extra_info)
          if progobj is None:
              progobj = self.notfound_program(args)
  
          if isinstance(progobj, ExternalProgram) and not progobj.found():
              mlog.log('Program', mlog.bold(progobj.get_name()), 'found:', mlog.red('NO'))
              if required:
                  m = 'Program {!r} not found'
                  raise InterpreterException(m.format(progobj.get_name()))
              return progobj
  
          if wanted:
              if version_func:
                  version = version_func(progobj)
              elif isinstance(progobj, build.Executable):
                  interp = self
                  if progobj.subproject:
                      interp = self.subprojects[progobj.subproject].held_object
                      assert isinstance(interp, Interpreter)
                  version = interp.project_version
              elif isinstance(progobj, ExternalProgram):
                  version = progobj.get_version(self)
              is_found, not_found, found = mesonlib.version_compare_many(version, wanted)
              if not is_found:
                  mlog.log('Program', mlog.bold(progobj.name), 'found:', mlog.red('NO'),
                           'found', mlog.normal_cyan(version), 'but need:',
                           mlog.bold(', '.join([f"'{e}'" for e in not_found])), *extra_info)
                  if required:
                      m = 'Invalid version of program, need {!r} {!r} found {!r}.'
                      raise InterpreterException(m.format(progobj.name, not_found, version))
                  return self.notfound_program(args)
              extra_info.insert(0, mlog.normal_cyan(version))
  
          # Only store successful lookups
          self.store_name_lookups(args)
          mlog.log('Program', mlog.bold(progobj.name), 'found:', mlog.green('YES'), *extra_info)
          if isinstance(progobj, build.Executable):
              progobj.was_returned_by_find_program = True
          return progobj
  
      def program_lookup(self, args, for_machine, required, search_dirs, extra_info):
          progobj = self.program_from_overrides(args, extra_info)
          if progobj:
              return progobj
  
          fallback = None
          wrap_mode = self.coredata.get_option(OptionKey('wrap_mode'))
          if wrap_mode != WrapMode.nofallback and self.environment.wrap_resolver:
              fallback = self.environment.wrap_resolver.find_program_provider(args)
          if fallback and wrap_mode == WrapMode.forcefallback:
              return self.find_program_fallback(fallback, args, required, extra_info)
  
          progobj = self.program_from_file_for(for_machine, args)
          if progobj is None:
              progobj = self.program_from_system(args, search_dirs, extra_info)
          if progobj is None and args[0].endswith('python3'):
              prog = ExternalProgram('python3', mesonlib.python_command, silent=True)
              progobj = prog if prog.found() else None
          if progobj is None and fallback and required:
              progobj = self.find_program_fallback(fallback, args, required, extra_info)
  
          return progobj
  
      def find_program_fallback(self, fallback, args, required, extra_info):
          mlog.log('Fallback to subproject', mlog.bold(fallback), 'which provides program',
                   mlog.bold(' '.join(args)))
          sp_kwargs = {'required': required}
          self.do_subproject(fallback, 'meson', sp_kwargs)
          return self.program_from_overrides(args, extra_info)
  
      @FeatureNewKwargs('find_program', '0.53.0', ['dirs'])
      @FeatureNewKwargs('find_program', '0.52.0', ['version'])
      @FeatureNewKwargs('find_program', '0.49.0', ['disabler'])
      @disablerIfNotFound
      @permittedKwargs({'required', 'native', 'version', 'dirs'})
      def func_find_program(self, node, args, kwargs) -> T.Union['build.Executable', ExternalProgram, 'OverrideProgram']:
          if not args:
              raise InterpreterException('No program name specified.')
  
          disabled, required, feature = extract_required_kwarg(kwargs, self.subproject)
          if disabled:
              mlog.log('Program', mlog.bold(' '.join(args)), 'skipped: feature', mlog.bold(feature), 'disabled')
              return self.notfound_program(args)
  
          search_dirs = extract_search_dirs(kwargs)
          wanted = mesonlib.stringlistify(kwargs.get('version', []))
          for_machine = self.machine_from_native_kwarg(kwargs)
          return self.find_program_impl(args, for_machine, required=required,
                                        silent=False, wanted=wanted,
                                        search_dirs=search_dirs)
  
      def func_find_library(self, node, args, kwargs):
          raise InvalidCode('find_library() is removed, use meson.get_compiler(\'name\').find_library() instead.\n'
                            'Look here for documentation: http://mesonbuild.com/Reference-manual.html#compiler-object\n'
                            'Look here for example: http://mesonbuild.com/howtox.html#add-math-library-lm-portably\n'
                            )
  
      # When adding kwargs, please check if they make sense in dependencies.get_dep_identifier()
      @FeatureNewKwargs('dependency', '0.57.0', ['cmake_package_version'])
      @FeatureNewKwargs('dependency', '0.56.0', ['allow_fallback'])
      @FeatureNewKwargs('dependency', '0.54.0', ['components'])
      @FeatureNewKwargs('dependency', '0.52.0', ['include_type'])
      @FeatureNewKwargs('dependency', '0.50.0', ['not_found_message', 'cmake_module_path', 'cmake_args'])
      @FeatureNewKwargs('dependency', '0.49.0', ['disabler'])
      @FeatureNewKwargs('dependency', '0.40.0', ['method'])
      @FeatureNewKwargs('dependency', '0.38.0', ['default_options'])
      @disablerIfNotFound
      @permittedKwargs(permitted_dependency_kwargs)
      @typed_pos_args('dependency', varargs=str, min_varargs=1)
      def func_dependency(self, node, args, kwargs):
          # Replace '' by empty list of names
          names = [n for n in args[0] if n]
          if len(names) > 1:
              FeatureNew('dependency with more than one name', '0.60.0').use(self.subproject)
          allow_fallback = kwargs.get('allow_fallback')
          if allow_fallback is not None and not isinstance(allow_fallback, bool):
              raise InvalidArguments('"allow_fallback" argument must be boolean')
          fallback = kwargs.get('fallback')
          default_options = kwargs.get('default_options')
          df = DependencyFallbacksHolder(self, names, allow_fallback, default_options)
          df.set_fallback(fallback)
          not_found_message = kwargs.get('not_found_message', '')
          if not isinstance(not_found_message, str):
              raise InvalidArguments('The not_found_message must be a string.')
          try:
              d = df.lookup(kwargs)
          except Exception:
              if not_found_message:
                  self.message_impl([not_found_message])
              raise
          assert isinstance(d, Dependency)
          if not d.found() and not_found_message:
              self.message_impl([not_found_message])
              self.message_impl([not_found_message])
          # Ensure the correct include type
          if 'include_type' in kwargs:
              wanted = kwargs['include_type']
              if not isinstance(wanted, str):
                  raise InvalidArguments('The `include_type` kwarg must be a string')
              actual = d.get_include_type()
              if wanted != actual:
                  mlog.debug(f'Current include type of {args[0]} is {actual}. Converting to requested {wanted}')
                  d = d.generate_system_dependency(wanted)
          return d
  
      @FeatureNew('disabler', '0.44.0')
      @noKwargs
      @noPosargs
      def func_disabler(self, node, args, kwargs):
          return Disabler()
  
      @FeatureNewKwargs('executable', '0.42.0', ['implib'])
      @FeatureNewKwargs('executable', '0.56.0', ['win_subsystem'])
      @FeatureDeprecatedKwargs('executable', '0.56.0', ['gui_app'], extra_message="Use 'win_subsystem' instead.")
      @permittedKwargs(build.known_exe_kwargs)
      def func_executable(self, node, args, kwargs):
          return self.build_target(node, args, kwargs, build.Executable)
  
      @permittedKwargs(build.known_stlib_kwargs)
      def func_static_lib(self, node, args, kwargs):
          return self.build_target(node, args, kwargs, build.StaticLibrary)
  
      @permittedKwargs(build.known_shlib_kwargs)
      def func_shared_lib(self, node, args, kwargs):
          holder = self.build_target(node, args, kwargs, build.SharedLibrary)
          holder.shared_library_only = True
          return holder
  
      @permittedKwargs(known_library_kwargs)
      def func_both_lib(self, node, args, kwargs):
          return self.build_both_libraries(node, args, kwargs)
  
      @FeatureNew('shared_module', '0.37.0')
      @permittedKwargs(build.known_shmod_kwargs)
      def func_shared_module(self, node, args, kwargs):
          return self.build_target(node, args, kwargs, build.SharedModule)
  
      @permittedKwargs(known_library_kwargs)
      def func_library(self, node, args, kwargs):
          return self.build_library(node, args, kwargs)
  
      @permittedKwargs(build.known_jar_kwargs)
      def func_jar(self, node, args, kwargs):
          return self.build_target(node, args, kwargs, build.Jar)
  
      @FeatureNewKwargs('build_target', '0.40.0', ['link_whole', 'override_options'])
      @permittedKwargs(known_build_target_kwargs)
      def func_build_target(self, node, args, kwargs):
          if 'target_type' not in kwargs:
              raise InterpreterException('Missing target_type keyword argument')
          target_type = kwargs.pop('target_type')
          if target_type == 'executable':
              return self.build_target(node, args, kwargs, build.Executable)
          elif target_type == 'shared_library':
              return self.build_target(node, args, kwargs, build.SharedLibrary)
          elif target_type == 'shared_module':
              FeatureNew('build_target(target_type: \'shared_module\')',
                         '0.51.0').use(self.subproject)
              return self.build_target(node, args, kwargs, build.SharedModule)
          elif target_type == 'static_library':
              return self.build_target(node, args, kwargs, build.StaticLibrary)
          elif target_type == 'both_libraries':
              return self.build_both_libraries(node, args, kwargs)
          elif target_type == 'library':
              return self.build_library(node, args, kwargs)
          elif target_type == 'jar':
              return self.build_target(node, args, kwargs, build.Jar)
          else:
              raise InterpreterException('Unknown target_type.')
  
      @permittedKwargs({'input', 'output', 'fallback', 'command', 'replace_string'})
      @FeatureDeprecatedKwargs('custom_target', '0.47.0', ['build_always'],
                               'combine build_by_default and build_always_stale instead.')
      @noPosargs
      def func_vcs_tag(self, node, args, kwargs):
          if 'input' not in kwargs or 'output' not in kwargs:
              raise InterpreterException('Keyword arguments input and output must exist')
          if 'fallback' not in kwargs:
              FeatureNew.single_use('Optional fallback in vcs_tag', '0.41.0', self.subproject)
          fallback = kwargs.pop('fallback', self.project_version)
          if not isinstance(fallback, str):
              raise InterpreterException('Keyword argument fallback must be a string.')
          replace_string = kwargs.pop('replace_string', '@VCS_TAG@')
          regex_selector = '(.*)' # default regex selector for custom command: use complete output
          vcs_cmd = kwargs.get('command', None)
          if vcs_cmd and not isinstance(vcs_cmd, list):
              vcs_cmd = [vcs_cmd]
          source_dir = os.path.normpath(os.path.join(self.environment.get_source_dir(), self.subdir))
          if vcs_cmd:
              # Is the command an executable in path or maybe a script in the source tree?
              vcs_cmd[0] = shutil.which(vcs_cmd[0]) or os.path.join(source_dir, vcs_cmd[0])
          else:
              vcs = mesonlib.detect_vcs(source_dir)
              if vcs:
                  mlog.log('Found {} repository at {}'.format(vcs['name'], vcs['wc_dir']))
                  vcs_cmd = vcs['get_rev'].split()
                  regex_selector = vcs['rev_regex']
              else:
                  vcs_cmd = [' '] # executing this cmd will fail in vcstagger.py and force to use the fallback string
          # vcstagger.py parameters: infile, outfile, fallback, source_dir, replace_string, regex_selector, command...
          kwargs['command'] = self.environment.get_build_command() + \
              ['--internal',
               'vcstagger',
               '@INPUT0@',
               '@OUTPUT0@',
               fallback,
               source_dir,
               replace_string,
               regex_selector] + vcs_cmd
          kwargs.setdefault('build_by_default', True)
          kwargs.setdefault('build_always_stale', True)
          return self._func_custom_target_impl(node, [kwargs['output']], kwargs)
  
      @FeatureNew('subdir_done', '0.46.0')
      @noPosargs
      @noKwargs
      def func_subdir_done(self, node, args, kwargs):
          raise SubdirDoneRequest()
  
      @typed_pos_args('custom_target', optargs=[str])
      @typed_kwargs(
          'custom_target',
          COMMAND_KW,
          CT_BUILD_BY_DEFAULT,
          CT_INPUT_KW,
          CT_INSTALL_DIR_KW,
          CT_INSTALL_TAG_KW,
          CT_OUTPUT_KW,
          DEPENDS_KW,
          DEPEND_FILES_KW,
          DEPFILE_KW,
          ENV_KW.evolve(since='0.57.0'),
          INSTALL_KW,
          INSTALL_MODE_KW.evolve(since='0.47.0'),
          OVERRIDE_OPTIONS_KW,
          KwargInfo('build_always', (bool, type(None)), deprecated='0.47.0'),
          KwargInfo('build_always_stale', (bool, type(None)), since='0.47.0'),
          KwargInfo('feed', bool, default=False, since='0.59.0'),
          KwargInfo('capture', bool, default=False),
          KwargInfo('console', bool, default=False, since='0.48.0'),
      )
      def func_custom_target(self, node: mparser.FunctionNode, args: T.Tuple[str],
                             kwargs: 'kwargs.CustomTarget') -> build.CustomTarget:
          if kwargs['depfile'] and ('@BASENAME@' in kwargs['depfile'] or '@PLAINNAME@' in kwargs['depfile']):
              FeatureNew.single_use('substitutions in custom_target depfile', '0.47.0', self.subproject)
  
          # Don't mutate the kwargs
          kwargs = kwargs.copy()
  
          # Remap build_always to build_by_default and build_always_stale
          if kwargs['build_always'] is not None and kwargs['build_always_stale'] is not None:
              raise InterpreterException('CustomTarget: "build_always" and "build_always_stale" are mutually exclusive')
  
          if kwargs['build_by_default'] is None and kwargs['install']:
              kwargs['build_by_default'] = True
  
          elif kwargs['build_always'] is not None:
              if kwargs['build_by_default'] is None:
                  kwargs['build_by_default'] = kwargs['build_always']
              kwargs['build_always_stale'] = kwargs['build_by_default']
  
              # Set this to None to satisfy process_kwargs
              kwargs['build_always'] = None
  
          # These are are nullaable so that we can know whether they're explicitly
          # set or not. If they haven't been overwritten, set them to their true
          # default
          if kwargs['build_by_default'] is None:
              kwargs['build_by_default'] = False
          if kwargs['build_always_stale'] is None:
              kwargs['build_always_stale'] = False
  
          return self._func_custom_target_impl(node, args, kwargs)
  
      def _func_custom_target_impl(self, node, args, kwargs):
          'Implementation-only, without FeatureNew checks, for internal use'
          name = args[0]
          if name is None:
              # name will default to first output, but we cannot do that yet because
              # they could need substitutions (e.g. @BASENAME@) first. CustomTarget()
              # will take care of setting a proper default but name must be an empty
              # string in the meantime.
              FeatureNew('custom_target() with no name argument', '0.60.0').use(self.subproject)
              name = ''
          kwargs['install_mode'] = self._get_kwarg_install_mode(kwargs)
          if 'input' in kwargs:
              try:
                  kwargs['input'] = self.source_strings_to_files(extract_as_list(kwargs, 'input'))
              except mesonlib.MesonException:
                  mlog.warning(f'''Custom target input '{kwargs['input']}' can't be converted to File object(s).
  This will become a hard error in the future.''', location=self.current_node)
          kwargs['env'] = self.unpack_env_kwarg(kwargs)
          if 'command' in kwargs and isinstance(kwargs['command'], list) and kwargs['command']:
              if isinstance(kwargs['command'][0], str):
                  kwargs['command'][0] = self.func_find_program(node, kwargs['command'][0], {})
          tg = build.CustomTarget(name, self.subdir, self.subproject, kwargs, backend=self.backend)
          self.add_target(tg.name, tg)
          return tg
  
      @typed_pos_args('run_target', str)
      @typed_kwargs(
          'run_target',
          COMMAND_KW,
          DEPENDS_KW,
          ENV_KW.evolve(since='0.57.0'),
      )
      def func_run_target(self, node: mparser.FunctionNode, args: T.Tuple[str],
                          kwargs: 'kwargs.RunTarget') -> build.RunTarget:
          all_args = kwargs['command'].copy()
  
          for i in listify(all_args):
              if isinstance(i, ExternalProgram) and not i.found():
                  raise InterpreterException(f'Tried to use non-existing executable {i.name!r}')
          if isinstance(all_args[0], str):
              all_args[0] = self.func_find_program(node, all_args[0], {})
          name = args[0]
          tg = build.RunTarget(name, all_args, kwargs['depends'], self.subdir, self.subproject, kwargs['env'])
          self.add_target(name, tg)
          full_name = (self.subproject, name)
          assert full_name not in self.build.run_target_names
          self.build.run_target_names.add(full_name)
          return tg
  
      @FeatureNew('alias_target', '0.52.0')
      @typed_pos_args('alias_target', str, varargs=build.Target, min_varargs=1)
      @noKwargs
      def func_alias_target(self, node: mparser.BaseNode, args: T.Tuple[str, T.List[build.Target]],
                            kwargs: 'TYPE_kwargs') -> build.AliasTarget:
          name, deps = args
          tg = build.AliasTarget(name, deps, self.subdir, self.subproject)
          self.add_target(name, tg)
          return tg
  
      @typed_pos_args('generator', (build.Executable, ExternalProgram))
      @typed_kwargs(
          'generator',
          KwargInfo('arguments', ContainerTypeInfo(list, str, allow_empty=False), required=True, listify=True),
          KwargInfo('output', ContainerTypeInfo(list, str, allow_empty=False), required=True, listify=True),
          DEPFILE_KW,
          KwargInfo('capture', bool, default=False, since='0.43.0'),
          KwargInfo('depends', ContainerTypeInfo(list, (build.BuildTarget, build.CustomTarget)), default=[], listify=True),
      )
      def func_generator(self, node: mparser.FunctionNode,
                         args: T.Tuple[T.Union[build.Executable, ExternalProgram]],
                         kwargs: 'kwargs.FuncGenerator') -> build.Generator:
          for rule in kwargs['output']:
              if '@BASENAME@' not in rule and '@PLAINNAME@' not in rule:
                  raise InvalidArguments('Every element of "output" must contain @BASENAME@ or @PLAINNAME@.')
              if has_path_sep(rule):
                  raise InvalidArguments('"output" must not contain a directory separator.')
          if len(kwargs['output']) > 1:
              for o in kwargs['output']:
                  if '@OUTPUT@' in o:
                      raise InvalidArguments('Tried to use @OUTPUT@ in a rule with more than one output.')
  
          gen = build.Generator(args[0], **kwargs)
          self.generators.append(gen)
          return gen
  
      @typed_pos_args('benchmark', str, (build.Executable, build.Jar, ExternalProgram, mesonlib.File))
      @typed_kwargs('benchmark', *TEST_KWARGS)
      def func_benchmark(self, node: mparser.BaseNode,
                         args: T.Tuple[str, T.Union[build.Executable, build.Jar, ExternalProgram, mesonlib.File]],
                         kwargs: 'kwargs.FuncBenchmark') -> None:
          self.add_test(node, args, kwargs, False)
  
      @typed_pos_args('test', str, (build.Executable, build.Jar, ExternalProgram, mesonlib.File))
      @typed_kwargs('test', *TEST_KWARGS, KwargInfo('is_parallel', bool, default=True))
      def func_test(self, node: mparser.BaseNode,
                    args: T.Tuple[str, T.Union[build.Executable, build.Jar, ExternalProgram, mesonlib.File]],
                    kwargs: 'kwargs.FuncTest') -> None:
          self.add_test(node, args, kwargs, True)
  
      def unpack_env_kwarg(self, kwargs: T.Union[build.EnvironmentVariables, T.Dict[str, 'TYPE_var'], T.List['TYPE_var'], str]) -> build.EnvironmentVariables:
          envlist = kwargs.get('env')
          if envlist is None:
              return build.EnvironmentVariables()
          msg = ENV_KW.validator(envlist)
          if msg:
              raise InvalidArguments(f'"env": {msg}')
          return ENV_KW.convertor(envlist)
  
      def make_test(self, node: mparser.BaseNode,
                    args: T.Tuple[str, T.Union[build.Executable, build.Jar, ExternalProgram, mesonlib.File]],
                    kwargs: 'kwargs.BaseTest') -> Test:
          name = args[0]
          if ':' in name:
              mlog.deprecation(f'":" is not allowed in test name "{name}", it has been replaced with "_"',
                               location=node)
              name = name.replace(':', '_')
          exe = args[1]
          if isinstance(exe, mesonlib.File):
              exe = self.func_find_program(node, args[1], {})
  
          env = self.unpack_env_kwarg(kwargs)
  
          if kwargs['timeout'] <= 0:
              FeatureNew.single_use('test() timeout <= 0', '0.57.0', self.subproject)
  
          prj = self.subproject if self.is_subproject() else self.build.project_name
  
          suite: T.List[str] = []
          for s in kwargs['suite']:
              if s:
                  s = ':' + s
              suite.append(prj.replace(' ', '_').replace(':', '_') + s)
  
          return Test(name,
                      prj,
                      suite,
                      exe,
                      kwargs['depends'],
                      kwargs.get('is_parallel', False),
                      kwargs['args'],
                      env,
                      kwargs['should_fail'],
                      kwargs['timeout'],
                      kwargs['workdir'],
                      kwargs['protocol'],
                      kwargs['priority'])
  
      def add_test(self, node: mparser.BaseNode, args: T.List, kwargs: T.Dict[str, T.Any], is_base_test: bool):
          t = self.make_test(node, args, kwargs)
          if is_base_test:
              self.build.tests.append(t)
              mlog.debug('Adding test', mlog.bold(t.name, True))
          else:
              self.build.benchmarks.append(t)
              mlog.debug('Adding benchmark', mlog.bold(t.name, True))
  
      @typed_pos_args('install_headers', varargs=(str, mesonlib.File))
      @typed_kwargs(
          'install_headers',
          KwargInfo('install_dir', (str, NoneType)),
          KwargInfo('subdir', (str, NoneType)),
          INSTALL_MODE_KW.evolve(since='0.47.0'),
      )
      def func_install_headers(self, node: mparser.BaseNode,
                               args: T.Tuple[T.List['mesonlib.FileOrString']],
                               kwargs: 'kwargs.FuncInstallHeaders') -> build.Headers:
          source_files = self.source_strings_to_files(args[0])
          install_subdir = kwargs['subdir']
          if install_subdir is not None and os.path.isabs(install_subdir):
              mlog.deprecation('Subdir keyword must not be an absolute path. This will be a hard error in the next release.')
  
          h = build.Headers(source_files, install_subdir, kwargs['install_dir'],
                            kwargs['install_mode'], self.subproject)
          self.build.headers.append(h)
  
          return h
  
      @typed_pos_args('install_man', varargs=(str, mesonlib.File))
      @typed_kwargs(
          'install_man',
          KwargInfo('install_dir', (str, NoneType)),
          KwargInfo('locale', (str, NoneType), since='0.58.0'),
          INSTALL_MODE_KW.evolve(since='0.47.0')
      )
      def func_install_man(self, node: mparser.BaseNode,
                           args: T.Tuple[T.List['mesonlib.FileOrString']],
                           kwargs: 'kwargs.FuncInstallMan') -> build.Man:
          # We just need to narrow this, because the input is limited to files and
          # Strings as inputs, so only Files will be returned
          sources = self.source_strings_to_files(args[0])
          for s in sources:
              try:
                  num = int(s.rsplit('.', 1)[-1])
              except (IndexError, ValueError):
                  num = 0
              if not 1 <= num <= 9:
                  raise InvalidArguments('Man file must have a file extension of a number between 1 and 9')
  
          m = build.Man(sources, kwargs['install_dir'], kwargs['install_mode'],
                        self.subproject, kwargs['locale'])
          self.build.man.append(m)
  
          return m
  
      @FeatureNew('install_emptydir', '0.60.0')
      @typed_kwargs(
          'install_emptydir',
          INSTALL_MODE_KW
      )
      def func_install_emptydir(self, node: mparser.BaseNode, args: T.Tuple[str], kwargs) -> None:
          d = build.EmptyDir(args[0], kwargs['install_mode'], self.subproject)
          self.build.emptydir.append(d)
  
          return d
  
      @FeatureNewKwargs('subdir', '0.44.0', ['if_found'])
      @permittedKwargs({'if_found'})
      @typed_pos_args('subdir', str)
      def func_subdir(self, node: mparser.BaseNode, args: T.Tuple[str], kwargs: 'TYPE_kwargs') -> None:
          mesonlib.check_direntry_issues(args)
          if '..' in args[0]:
              raise InvalidArguments('Subdir contains ..')
          if self.subdir == '' and args[0] == self.subproject_dir:
              raise InvalidArguments('Must not go into subprojects dir with subdir(), use subproject() instead.')
          if self.subdir == '' and args[0].startswith('meson-'):
              raise InvalidArguments('The "meson-" prefix is reserved and cannot be used for top-level subdir().')
          for i in mesonlib.extract_as_list(kwargs, 'if_found'):
              if not hasattr(i, 'found'):
                  raise InterpreterException('Object used in if_found does not have a found method.')
              if not i.found():
                  return
          prev_subdir = self.subdir
          subdir = os.path.join(prev_subdir, args[0])
          if os.path.isabs(subdir):
              raise InvalidArguments('Subdir argument must be a relative path.')
          absdir = os.path.join(self.environment.get_source_dir(), subdir)
          symlinkless_dir = os.path.realpath(absdir)
          build_file = os.path.join(symlinkless_dir, 'meson.build')
          if build_file in self.processed_buildfiles:
              raise InvalidArguments(f'Tried to enter directory "{subdir}", which has already been visited.')
          self.processed_buildfiles.add(build_file)
          self.subdir = subdir
          os.makedirs(os.path.join(self.environment.build_dir, subdir), exist_ok=True)
          buildfilename = os.path.join(self.subdir, environment.build_filename)
          self.build_def_files.append(buildfilename)
          absname = os.path.join(self.environment.get_source_dir(), buildfilename)
          if not os.path.isfile(absname):
              self.subdir = prev_subdir
              raise InterpreterException(f"Non-existent build file '{buildfilename!s}'")
          with open(absname, encoding='utf-8') as f:
              code = f.read()
          assert isinstance(code, str)
          try:
              codeblock = mparser.Parser(code, absname).parse()
          except mesonlib.MesonException as me:
              me.file = absname
              raise me
          try:
              self.evaluate_codeblock(codeblock)
          except SubdirDoneRequest:
              pass
          self.subdir = prev_subdir
  
      def _get_kwarg_install_mode(self, kwargs: T.Dict[str, T.Any]) -> T.Optional[FileMode]:
          if kwargs.get('install_mode', None) is None:
              return None
          if isinstance(kwargs['install_mode'], FileMode):
              return kwargs['install_mode']
          install_mode: T.List[str] = []
          mode = mesonlib.typeslistify(kwargs.get('install_mode', []), (str, int))
          for m in mode:
              # We skip any arguments that are set to `false`
              if m is False:
                  m = None
              install_mode.append(m)
          if len(install_mode) > 3:
              raise InvalidArguments('Keyword argument install_mode takes at '
                                     'most 3 arguments.')
          if len(install_mode) > 0 and install_mode[0] is not None and \
             not isinstance(install_mode[0], str):
              raise InvalidArguments('Keyword argument install_mode requires the '
                                     'permissions arg to be a string or false')
          return FileMode(*install_mode)
  
      @typed_pos_args('install_data', varargs=(str, mesonlib.File))
      @typed_kwargs(
          'install_data',
          KwargInfo('install_dir', (str, NoneType)),
          KwargInfo('sources', ContainerTypeInfo(list, (str, mesonlib.File)), listify=True, default=[]),
          KwargInfo('rename', ContainerTypeInfo(list, str), default=[], listify=True, since='0.46.0'),
          INSTALL_MODE_KW.evolve(since='0.38.0'),
          KwargInfo('install_tag', (str, NoneType), since='0.60.0'),
      )
      def func_install_data(self, node: mparser.BaseNode,
                            args: T.Tuple[T.List['mesonlib.FileOrString']],
                            kwargs: 'kwargs.FuncInstallData') -> build.Data:
          sources = self.source_strings_to_files(args[0] + kwargs['sources'])
          rename = kwargs['rename'] or None
          if rename:
              if len(rename) != len(sources):
                  raise InvalidArguments(
                      '"rename" and "sources" argument lists must be the same length if "rename" is given. '
                      f'Rename has {len(rename)} elements and sources has {len(sources)}.')
  
          install_dir_name = kwargs['install_dir']
          if install_dir_name:
              if not os.path.isabs(install_dir_name):
                  install_dir_name = os.path.join('{datadir}', install_dir_name)
          else:
              install_dir_name = '{datadir}'
          return self.install_data_impl(sources, kwargs['install_dir'], kwargs['install_mode'],
                                        rename, kwargs['install_tag'], install_dir_name)
  
      def install_data_impl(self, sources: T.List[mesonlib.File], install_dir: str,
                            install_mode: FileMode, rename: T.Optional[str],
                            tag: T.Optional[str],
                            install_dir_name: T.Optional[str] = None,
                            install_data_type: T.Optional[str] = None) -> build.Data:
  
          """Just the implementation with no validation."""
          data = build.Data(sources, install_dir, install_dir_name or install_dir, install_mode,
                            self.subproject, rename, tag, install_data_type)
          self.build.data.append(data)
          return data
  
      @typed_pos_args('install_subdir', str)
      @typed_kwargs(
          'install_subdir',
          KwargInfo('install_dir', str, required=True),
          KwargInfo('install_tag', (str, NoneType), since='0.60.0'),
          KwargInfo('strip_directory', bool, default=False),
          KwargInfo('exclude_files', ContainerTypeInfo(list, str),
                    default=[], listify=True, since='0.42.0',
                    validator=lambda x: 'cannot be absolute' if any(os.path.isabs(d) for d in x) else None),
          KwargInfo('exclude_directories', ContainerTypeInfo(list, str),
                    default=[], listify=True, since='0.42.0',
                    validator=lambda x: 'cannot be absolute' if any(os.path.isabs(d) for d in x) else None),
          INSTALL_MODE_KW.evolve(since='0.38.0'),
      )
      def func_install_subdir(self, node: mparser.BaseNode, args: T.Tuple[str],
                              kwargs: 'kwargs.FuncInstallSubdir') -> build.InstallDir:
          exclude = (set(kwargs['exclude_files']), set(kwargs['exclude_directories']))
          idir = build.InstallDir(
              self.subdir,
              args[0],
              kwargs['install_dir'],
              kwargs['install_mode'],
              exclude,
              kwargs['strip_directory'],
              self.subproject,
              install_tag=kwargs['install_tag'])
          self.build.install_dirs.append(idir)
          return idir
  
      @FeatureNewKwargs('configure_file', '0.47.0', ['copy', 'output_format', 'install_mode', 'encoding'])
      @FeatureNewKwargs('configure_file', '0.46.0', ['format'])
      @FeatureNewKwargs('configure_file', '0.41.0', ['capture'])
      @FeatureNewKwargs('configure_file', '0.50.0', ['install'])
      @FeatureNewKwargs('configure_file', '0.52.0', ['depfile'])
      @FeatureNewKwargs('configure_file', '0.60.0', ['install_tag'])
      @permittedKwargs({'input', 'output', 'configuration', 'command', 'copy', 'depfile',
                        'install_dir', 'install_mode', 'capture', 'install', 'format',
                        'output_format', 'encoding', 'install_tag'})
      @noPosargs
      def func_configure_file(self, node, args, kwargs):
          if 'output' not in kwargs:
              raise InterpreterException('Required keyword argument "output" not defined.')
          actions = {'configuration', 'command', 'copy'}.intersection(kwargs.keys())
          if len(actions) == 0:
              raise InterpreterException('Must specify an action with one of these '
                                         'keyword arguments: \'configuration\', '
                                         '\'command\', or \'copy\'.')
          elif len(actions) == 2:
              raise InterpreterException('Must not specify both {!r} and {!r} '
                                         'keyword arguments since they are '
                                         'mutually exclusive.'.format(*actions))
          elif len(actions) == 3:
              raise InterpreterException('Must specify one of {!r}, {!r}, and '
                                         '{!r} keyword arguments since they are '
                                         'mutually exclusive.'.format(*actions))
          if 'capture' in kwargs:
              if not isinstance(kwargs['capture'], bool):
                  raise InterpreterException('"capture" keyword must be a boolean.')
              if 'command' not in kwargs:
                  raise InterpreterException('"capture" keyword requires "command" keyword.')
  
          if 'format' in kwargs:
              fmt = kwargs['format']
              if not isinstance(fmt, str):
                  raise InterpreterException('"format" keyword must be a string.')
          else:
              fmt = 'meson'
  
          if fmt not in ('meson', 'cmake', 'cmake@'):
              raise InterpreterException('"format" possible values are "meson", "cmake" or "cmake@".')
  
          if 'output_format' in kwargs:
              output_format = kwargs['output_format']
              if not isinstance(output_format, str):
                  raise InterpreterException('"output_format" keyword must be a string.')
          else:
              output_format = 'c'
  
          if output_format not in ('c', 'nasm'):
              raise InterpreterException('"format" possible values are "c" or "nasm".')
  
          if 'depfile' in kwargs:
              depfile = kwargs['depfile']
              if not isinstance(depfile, str):
                  raise InterpreterException('depfile file name must be a string')
          else:
              depfile = None
  
          # Validate input
          inputs = self.source_strings_to_files(extract_as_list(kwargs, 'input'))
          inputs_abs = []
          for f in inputs:
              if isinstance(f, mesonlib.File):
                  inputs_abs.append(f.absolute_path(self.environment.source_dir,
                                                    self.environment.build_dir))
                  self.add_build_def_file(f)
              else:
                  raise InterpreterException('Inputs can only be strings or file objects')
          # Validate output
          output = kwargs['output']
          if not isinstance(output, str):
              raise InterpreterException('Output file name must be a string')
          if inputs_abs:
              values = mesonlib.get_filenames_templates_dict(inputs_abs, None)
              outputs = mesonlib.substitute_values([output], values)
              output = outputs[0]
              if depfile:
                  depfile = mesonlib.substitute_values([depfile], values)[0]
          ofile_rpath = os.path.join(self.subdir, output)
          if ofile_rpath in self.configure_file_outputs:
              mesonbuildfile = os.path.join(self.subdir, 'meson.build')
              current_call = f"{mesonbuildfile}:{self.current_lineno}"
              first_call = "{}:{}".format(mesonbuildfile, self.configure_file_outputs[ofile_rpath])
              mlog.warning('Output file', mlog.bold(ofile_rpath, True), 'for configure_file() at', current_call, 'overwrites configure_file() output at', first_call)
          else:
              self.configure_file_outputs[ofile_rpath] = self.current_lineno
          if os.path.dirname(output) != '':
              raise InterpreterException('Output file name must not contain a subdirectory.')
          (ofile_path, ofile_fname) = os.path.split(os.path.join(self.subdir, output))
          ofile_abs = os.path.join(self.environment.build_dir, ofile_path, ofile_fname)
          # Perform the appropriate action
          if 'configuration' in kwargs:
              conf = kwargs['configuration']
              if isinstance(conf, dict):
                  FeatureNew.single_use('configure_file.configuration dictionary', '0.49.0', self.subproject)
                  conf = ConfigurationDataObject(self.subproject, conf)
              elif not isinstance(conf, ConfigurationDataObject):
                  raise InterpreterException('Argument "configuration" is not of type configuration_data')
              mlog.log('Configuring', mlog.bold(output), 'using configuration')
              if len(inputs) > 1:
                  raise InterpreterException('At most one input file can given in configuration mode')
              if inputs:
                  os.makedirs(os.path.join(self.environment.build_dir, self.subdir), exist_ok=True)
                  file_encoding = kwargs.setdefault('encoding', 'utf-8')
                  missing_variables, confdata_useless = \
                      mesonlib.do_conf_file(inputs_abs[0], ofile_abs, conf.conf_data,
                                            fmt, file_encoding)
                  if missing_variables:
                      var_list = ", ".join(map(repr, sorted(missing_variables)))
                      mlog.warning(
                          f"The variable(s) {var_list} in the input file '{inputs[0]}' are not "
                          "present in the given configuration data.", location=node)
                  if confdata_useless:
                      ifbase = os.path.basename(inputs_abs[0])
                      mlog.warning('Got an empty configuration_data() object and found no '
                                   f'substitutions in the input file {ifbase!r}. If you want to '
                                   'copy a file to the build dir, use the \'copy:\' keyword '
                                   'argument added in 0.47.0', location=node)
              else:
                  mesonlib.dump_conf_header(ofile_abs, conf.conf_data, output_format)
              conf.mark_used()
          elif 'command' in kwargs:
              if len(inputs) > 1:
                  FeatureNew.single_use('multiple inputs in configure_file()', '0.52.0', self.subproject)
              # We use absolute paths for input and output here because the cwd
              # that the command is run from is 'unspecified', so it could change.
              # Currently it's builddir/subdir for in_builddir else srcdir/subdir.
              values = mesonlib.get_filenames_templates_dict(inputs_abs, [ofile_abs])
              if depfile:
                  depfile = os.path.join(self.environment.get_scratch_dir(), depfile)
                  values['@DEPFILE@'] = depfile
              # Substitute @INPUT@, @OUTPUT@, etc here.
              cmd = mesonlib.substitute_values(kwargs['command'], values)
              mlog.log('Configuring', mlog.bold(output), 'with command')
              res = self.run_command_impl(node, cmd,  {}, True)
              if res.returncode != 0:
                  raise InterpreterException(f'Running configure command failed.\n{res.stdout}\n{res.stderr}')
              if 'capture' in kwargs and kwargs['capture']:
                  dst_tmp = ofile_abs + '~'
                  file_encoding = kwargs.setdefault('encoding', 'utf-8')
                  with open(dst_tmp, 'w', encoding=file_encoding) as f:
                      f.writelines(res.stdout)
                  if inputs_abs:
                      shutil.copymode(inputs_abs[0], dst_tmp)
                  mesonlib.replace_if_different(ofile_abs, dst_tmp)
              if depfile:
                  mlog.log('Reading depfile:', mlog.bold(depfile))
                  with open(depfile, encoding='utf-8') as f:
                      df = DepFile(f.readlines())
                      deps = df.get_all_dependencies(ofile_fname)
                      for dep in deps:
                          self.add_build_def_file(dep)
  
          elif 'copy' in kwargs:
              if len(inputs_abs) != 1:
                  raise InterpreterException('Exactly one input file must be given in copy mode')
              os.makedirs(os.path.join(self.environment.build_dir, self.subdir), exist_ok=True)
              shutil.copy2(inputs_abs[0], ofile_abs)
          else:
              # Not reachable
              raise AssertionError
          # Install file if requested, we check for the empty string
          # for backwards compatibility. That was the behaviour before
          # 0.45.0 so preserve it.
          idir = kwargs.get('install_dir', '')
          if idir is False:
              idir = ''
              FeatureDeprecated.single_use('configure_file install_dir: false', '0.50.0',
                                           self.subproject, 'Use the `install:` kwarg instead')
          if not isinstance(idir, str):
              if isinstance(idir, list) and len(idir) == 0:
                  mlog.deprecation('install_dir: kwarg must be a string and not an empty array. '
                                   'Please use the install: kwarg to enable or disable installation. '
                                   'This will be a hard error in the next release.')
              else:
                  raise InterpreterException('"install_dir" must be a string')
          install = kwargs.get('install', idir != '')
          if not isinstance(install, bool):
              raise InterpreterException('"install" must be a boolean')
          if install:
              if not idir:
                  raise InterpreterException('"install_dir" must be specified '
                                             'when "install" in a configure_file '
                                             'is true')
              cfile = mesonlib.File.from_built_file(ofile_path, ofile_fname)
              install_mode = self._get_kwarg_install_mode(kwargs)
              install_tag = kwargs.get('install_tag')
              if install_tag is not None and not isinstance(install_tag, str):
                  raise InvalidArguments('install_tag keyword argument must be string')
              self.build.data.append(build.Data([cfile], idir, idir, install_mode, self.subproject,
                                                install_tag=install_tag, data_type='configure'))
          return mesonlib.File.from_built_file(self.subdir, output)
  
      def extract_incdirs(self, kwargs):
          prospectives = extract_as_list(kwargs, 'include_directories')
          result = []
          for p in prospectives:
              if isinstance(p, build.IncludeDirs):
                  result.append(p)
              elif isinstance(p, str):
                  result.append(self.build_incdir_object([p]))
              else:
                  raise InterpreterException('Include directory objects can only be created from strings or include directories.')
          return result
  
      @typed_pos_args('include_directories', varargs=str)
      @typed_kwargs('include_directories', KwargInfo('is_system', bool, default=False))
      def func_include_directories(self, node: mparser.BaseNode, args: T.Tuple[T.List[str]],
                                   kwargs: 'kwargs.FuncIncludeDirectories') -> build.IncludeDirs:
          return self.build_incdir_object(args[0], kwargs['is_system'])
  
      def build_incdir_object(self, incdir_strings: T.List[str], is_system: bool = False) -> build.IncludeDirs:
          if not isinstance(is_system, bool):
              raise InvalidArguments('Is_system must be boolean.')
          src_root = self.environment.get_source_dir()
          build_root = self.environment.get_build_dir()
          absbase_src = os.path.join(src_root, self.subdir)
          absbase_build = os.path.join(build_root, self.subdir)
  
          for a in incdir_strings:
              if a.startswith(src_root):
                  raise InvalidArguments(textwrap.dedent('''\
                      Tried to form an absolute path to a source dir.
                      You should not do that but use relative paths instead.
  
                      To get include path to any directory relative to the current dir do
  
                      incdir = include_directories(dirname)
  
                      After this incdir will contain both the current source dir as well as the
                      corresponding build dir. It can then be used in any subdirectory and
                      Meson will take care of all the busywork to make paths work.
  
                      Dirname can even be '.' to mark the current directory. Though you should
                      remember that the current source and build directories are always
                      put in the include directories by default so you only need to do
                      include_directories('.') if you intend to use the result in a
                      different subdirectory.
                      '''))
              else:
                  try:
                      self.validate_within_subproject(self.subdir, a)
                  except InterpreterException:
                      mlog.warning('include_directories sandbox violation!')
                      print(textwrap.dedent(f'''\
                          The project is trying to access the directory {a} which belongs to a different
                          subproject. This is a problem as it hardcodes the relative paths of these two projects.
                          This makes it impossible to compile the project in any other directory layout and also
                          prevents the subproject from changing its own directory layout.
  
                          Instead of poking directly at the internals the subproject should be executed and
                          it should set a variable that the caller can then use. Something like:
  
                          # In subproject
                          some_dep = declare_dependency(include_directories: include_directories('include'))
  
                          # In subproject wrap file
                          [provide]
                          some = some_dep
  
                          # In parent project
                          some_dep = dependency('some')
                          executable(..., dependencies: [some_dep])
  
                          This warning will become a hard error in a future Meson release.
                          '''))
              absdir_src = os.path.join(absbase_src, a)
              absdir_build = os.path.join(absbase_build, a)
              if not os.path.isdir(absdir_src) and not os.path.isdir(absdir_build):
                  raise InvalidArguments(f'Include dir {a} does not exist.')
          i = build.IncludeDirs(self.subdir, incdir_strings, is_system)
          return i
  
      @permittedKwargs({'exe_wrapper', 'gdb', 'timeout_multiplier', 'env', 'is_default',
                        'exclude_suites'})
      @typed_pos_args('add_test_setup', str)
      def func_add_test_setup(self, node: mparser.BaseNode, args: T.Tuple[str], kwargs: 'TYPE_kwargs') -> None:
          setup_name = args[0]
          if re.fullmatch('([_a-zA-Z][_0-9a-zA-Z]*:)?[_a-zA-Z][_0-9a-zA-Z]*', setup_name) is None:
              raise InterpreterException('Setup name may only contain alphanumeric characters.')
          if ":" not in setup_name:
              setup_name = (self.subproject if self.subproject else self.build.project_name) + ":" + setup_name
          try:
              inp = extract_as_list(kwargs, 'exe_wrapper')
              exe_wrapper = []
              for i in inp:
                  if isinstance(i, str):
                      exe_wrapper.append(i)
                  elif isinstance(i, ExternalProgram):
                      if not i.found():
                          raise InterpreterException('Tried to use non-found executable.')
                      exe_wrapper += i.get_command()
                  else:
                      raise InterpreterException('Exe wrapper can only contain strings or external binaries.')
          except KeyError:
              exe_wrapper = None
          gdb = kwargs.get('gdb', False)
          if not isinstance(gdb, bool):
              raise InterpreterException('Gdb option must be a boolean')
          timeout_multiplier = kwargs.get('timeout_multiplier', 1)
          if not isinstance(timeout_multiplier, int):
              raise InterpreterException('Timeout multiplier must be a number.')
          if timeout_multiplier <= 0:
              FeatureNew('add_test_setup() timeout_multiplier <= 0', '0.57.0').use(self.subproject)
          is_default = kwargs.get('is_default', False)
          if not isinstance(is_default, bool):
              raise InterpreterException('is_default option must be a boolean')
          if is_default:
              if self.build.test_setup_default_name is not None:
                  raise InterpreterException(f'{self.build.test_setup_default_name!r} is already set as default. '
                                             'is_default can be set to true only once')
              self.build.test_setup_default_name = setup_name
          exclude_suites = mesonlib.stringlistify(kwargs.get('exclude_suites', []))
          env = self.unpack_env_kwarg(kwargs)
          self.build.test_setups[setup_name] = build.TestSetup(exe_wrapper, gdb, timeout_multiplier, env,
                                                               exclude_suites)
  
      @typed_pos_args('add_global_arguments', varargs=str)
      @typed_kwargs('add_global_arguments', NATIVE_KW, LANGUAGE_KW)
      def func_add_global_arguments(self, node: mparser.FunctionNode, args: T.Tuple[T.List[str]], kwargs: 'kwargs.FuncAddProjectArgs') -> None:
          self._add_global_arguments(node, self.build.global_args[kwargs['native']], args[0], kwargs)
  
      @typed_pos_args('add_global_link_arguments', varargs=str)
      @typed_kwargs('add_global_arguments', NATIVE_KW, LANGUAGE_KW)
      def func_add_global_link_arguments(self, node: mparser.FunctionNode, args: T.Tuple[T.List[str]], kwargs: 'kwargs.FuncAddProjectArgs') -> None:
          self._add_global_arguments(node, self.build.global_link_args[kwargs['native']], args[0], kwargs)
  
      @typed_pos_args('add_project_arguments', varargs=str)
      @typed_kwargs('add_project_arguments', NATIVE_KW, LANGUAGE_KW)
      def func_add_project_arguments(self, node: mparser.FunctionNode, args: T.Tuple[T.List[str]], kwargs: 'kwargs.FuncAddProjectArgs') -> None:
          self._add_project_arguments(node, self.build.projects_args[kwargs['native']], args[0], kwargs)
  
      @typed_pos_args('add_project_link_arguments', varargs=str)
      @typed_kwargs('add_global_arguments', NATIVE_KW, LANGUAGE_KW)
      def func_add_project_link_arguments(self, node: mparser.FunctionNode, args: T.Tuple[T.List[str]], kwargs: 'kwargs.FuncAddProjectArgs') -> None:
          self._add_project_arguments(node, self.build.projects_link_args[kwargs['native']], args[0], kwargs)
  
      def _warn_about_builtin_args(self, args: T.List[str]) -> None:
          # -Wpedantic is deliberately not included, since some people want to use it but not use -Wextra
          # see e.g.
          # https://github.com/mesonbuild/meson/issues/3275#issuecomment-641354956
          # https://github.com/mesonbuild/meson/issues/3742
          warnargs = ('/W1', '/W2', '/W3', '/W4', '/Wall', '-Wall', '-Wextra')
          optargs = ('-O0', '-O2', '-O3', '-Os', '-Oz', '/O1', '/O2', '/Os')
          for arg in args:
              if arg in warnargs:
                  mlog.warning(f'Consider using the built-in warning_level option instead of using "{arg}".',
                               location=self.current_node)
              elif arg in optargs:
                  mlog.warning(f'Consider using the built-in optimization level instead of using "{arg}".',
                               location=self.current_node)
              elif arg == '-Werror':
                  mlog.warning(f'Consider using the built-in werror option instead of using "{arg}".',
                               location=self.current_node)
              elif arg == '-g':
                  mlog.warning(f'Consider using the built-in debug option instead of using "{arg}".',
                               location=self.current_node)
              elif arg.startswith('-fsanitize'):
                  mlog.warning(f'Consider using the built-in option for sanitizers instead of using "{arg}".',
                               location=self.current_node)
              elif arg.startswith('-std=') or arg.startswith('/std:'):
                  mlog.warning(f'Consider using the built-in option for language standard version instead of using "{arg}".',
                               location=self.current_node)
  
      def _add_global_arguments(self, node: mparser.FunctionNode, argsdict: T.Dict[str, T.List[str]],
                                args: T.List[str], kwargs: 'kwargs.FuncAddProjectArgs') -> None:
          if self.is_subproject():
              msg = f'Function \'{node.func_name}\' cannot be used in subprojects because ' \
                    'there is no way to make that reliable.\nPlease only call ' \
                    'this if is_subproject() returns false. Alternatively, ' \
                    'define a variable that\ncontains your language-specific ' \
                    'arguments and add it to the appropriate *_args kwarg ' \
                    'in each target.'
              raise InvalidCode(msg)
          frozen = self.project_args_frozen or self.global_args_frozen
          self._add_arguments(node, argsdict, frozen, args, kwargs)
  
      def _add_project_arguments(self, node: mparser.FunctionNode, argsdict: T.Dict[str, T.Dict[str, T.List[str]]],
                                 args: T.List[str], kwargs: 'kwargs.FuncAddProjectArgs') -> None:
          if self.subproject not in argsdict:
              argsdict[self.subproject] = {}
          self._add_arguments(node, argsdict[self.subproject],
                              self.project_args_frozen, args, kwargs)
  
      def _add_arguments(self, node: mparser.FunctionNode, argsdict: T.Dict[str, T.List[str]],
                         args_frozen: bool, args: T.List[str], kwargs: 'kwargs.FuncAddProjectArgs') -> None:
          if args_frozen:
              msg = f'Tried to use \'{node.func_name}\' after a build target has been declared.\n' \
                    'This is not permitted. Please declare all arguments before your targets.'
              raise InvalidCode(msg)
  
          self._warn_about_builtin_args(args)
  
          for lang in kwargs['language']:
              argsdict[lang] = argsdict.get(lang, []) + args
  
      @noKwargs
      @noArgsFlattening
      @typed_pos_args('environment', optargs=[(str, list, dict)])
      def func_environment(self, node: mparser.FunctionNode, args: T.Tuple[T.Union[None, str, T.List['TYPE_var'], T.Dict[str, 'TYPE_var']]],
                           kwargs: 'TYPE_kwargs') -> build.EnvironmentVariables:
          init = args[0]
          if init is not None:
              FeatureNew.single_use('environment positional arguments', '0.52.0', self.subproject)
              msg = ENV_KW.validator(init)
              if msg:
                  raise InvalidArguments(f'"environment": {msg}')
              return ENV_KW.convertor(init)
          return build.EnvironmentVariables()
  
      @typed_pos_args('join_paths', varargs=str, min_varargs=1)
      @noKwargs
      def func_join_paths(self, node: mparser.BaseNode, args: T.Tuple[T.List[str]], kwargs: 'TYPE_kwargs') -> str:
          return os.path.join(*args[0]).replace('\\', '/')
  
      def run(self) -> None:
          super().run()
          mlog.log('Build targets in project:', mlog.bold(str(len(self.build.targets))))
          FeatureNew.report(self.subproject)
          FeatureDeprecated.report(self.subproject)
          if not self.is_subproject():
              self.print_extra_warnings()
          if self.subproject == '':
              self._print_summary()
  
      def print_extra_warnings(self) -> None:
          # TODO cross compilation
          for c in self.coredata.compilers.host.values():
              if c.get_id() == 'clang':
                  self.check_clang_asan_lundef()
                  break
  
      def check_clang_asan_lundef(self) -> None:
          if OptionKey('b_lundef') not in self.coredata.options:
              return
          if OptionKey('b_sanitize') not in self.coredata.options:
              return
          if (self.coredata.options[OptionKey('b_lundef')].value and
                  self.coredata.options[OptionKey('b_sanitize')].value != 'none'):
              mlog.warning('''Trying to use {} sanitizer on Clang with b_lundef.
  This will probably not work.
  Try setting b_lundef to false instead.'''.format(self.coredata.options[OptionKey('b_sanitize')].value),
                           location=self.current_node)
  
      # Check that the indicated file is within the same subproject
      # as we currently are. This is to stop people doing
      # nasty things like:
      #
      # f = files('../../master_src/file.c')
      #
      # Note that this is validated only when the file
      # object is generated. The result can be used in a different
      # subproject than it is defined in (due to e.g. a
      # declare_dependency).
      def validate_within_subproject(self, subdir, fname):
          srcdir = Path(self.environment.source_dir)
          norm = Path(srcdir, subdir, fname).resolve()
          if os.path.isdir(norm):
              inputtype = 'directory'
          else:
              inputtype = 'file'
          if srcdir not in norm.parents:
              # Grabbing files outside the source tree is ok.
              # This is for vendor stuff like:
              #
              # /opt/vendorsdk/src/file_with_license_restrictions.c
              return
          project_root = Path(srcdir, self.root_subdir)
          if norm == project_root:
              return
          if project_root not in norm.parents:
              raise InterpreterException(f'Sandbox violation: Tried to grab {inputtype} {norm.name} outside current (sub)project.')
          if project_root / self.subproject_dir in norm.parents:
              raise InterpreterException(f'Sandbox violation: Tried to grab {inputtype} {norm.name} from a nested subproject.')
  
      @T.overload
      def source_strings_to_files(self, sources: T.List['mesonlib.FileOrString']) -> T.List['mesonlib.File']: ...
  
      @T.overload
      def source_strings_to_files(self, sources: T.List['SourceInputs']) -> T.List['SourceOutputs']: ... # noqa: F811
  
      def source_strings_to_files(self, sources: T.List['SourceInputs']) -> T.List['SourceOutputs']: # noqa: F811
          """Lower inputs to a list of Targets and Files, replacing any strings.
  
          :param sources: A raw (Meson DSL) list of inputs (targets, files, and
              strings)
          :raises InterpreterException: if any of the inputs are of an invalid type
          :return: A list of Targets and Files
          """
          mesonlib.check_direntry_issues(sources)
          if not isinstance(sources, list):
              sources = [sources]
          results: T.List['SourceOutputs'] = []
          for s in sources:
              if isinstance(s, str):
                  self.validate_within_subproject(self.subdir, s)
                  results.append(mesonlib.File.from_source_file(self.environment.source_dir, self.subdir, s))
              elif isinstance(s, mesonlib.File):
                  results.append(s)
              elif isinstance(s, (build.GeneratedList, build.BuildTarget,
                                  build.CustomTargetIndex, build.CustomTarget,
                                  build.GeneratedList)):
                  results.append(s)
              else:
                  raise InterpreterException(f'Source item is {s!r} instead of '
                                             'string or File-type object')
          return results
  
      def add_target(self, name, tobj):
          if name == '':
              raise InterpreterException('Target name must not be empty.')
          if name.strip() == '':
              raise InterpreterException('Target name must not consist only of whitespace.')
          if has_path_sep(name):
              pathseg = os.path.join(self.subdir, os.path.split(name)[0])
              if os.path.exists(os.path.join(self.source_root, pathseg)):
                  raise InvalidArguments(textwrap.dedent(f'''\
                      Target "{name}" has a path segment pointing to directory "{pathseg}". This is an error.
                      To define a target that builds in that directory you must define it
                      in the meson.build file in that directory.
              '''))
          if name.startswith('meson-'):
              raise InvalidArguments("Target names starting with 'meson-' are reserved "
                                     "for Meson's internal use. Please rename.")
          if name in coredata.FORBIDDEN_TARGET_NAMES:
              raise InvalidArguments(f"Target name '{name}' is reserved for Meson's "
                                     "internal use. Please rename.")
          # To permit an executable and a shared library to have the
          # same name, such as "foo.exe" and "libfoo.a".
          idname = tobj.get_id()
          if idname in self.build.targets:
              raise InvalidCode(f'Tried to create target "{name}", but a target of that name already exists.')
          self.build.targets[idname] = tobj
          if idname not in self.coredata.target_guids:
              self.coredata.target_guids[idname] = str(uuid.uuid4()).upper()
  
      @FeatureNew('both_libraries', '0.46.0')
      def build_both_libraries(self, node, args, kwargs):
          shared_lib = self.build_target(node, args, kwargs, build.SharedLibrary)
  
          # Check if user forces non-PIC static library.
          pic = True
          key = OptionKey('b_staticpic')
          if 'pic' in kwargs:
              pic = kwargs['pic']
          elif key in self.environment.coredata.options:
              pic = self.environment.coredata.options[key].value
  
          if self.backend.name == 'xcode':
              # Xcode is a bit special in that you can't (at least for the moment)
              # form a library only from object file inputs. The simple but inefficient
              # solution is to use the sources directly. This will lead to them being
              # built twice. This is unfortunate and slow, but at least it works.
              # Feel free to submit patches to get this fixed if it is an
              # issue for you.
              reuse_object_files = False
          else:
              reuse_object_files = pic
  
          if reuse_object_files:
              # Exclude sources from args and kwargs to avoid building them twice
              static_args = [args[0]]
              static_kwargs = kwargs.copy()
              static_kwargs['sources'] = []
              static_kwargs['objects'] = shared_lib.extract_all_objects()
          else:
              static_args = args
              static_kwargs = kwargs
  
          static_lib = self.build_target(node, static_args, static_kwargs, build.StaticLibrary)
  
          return build.BothLibraries(shared_lib, static_lib)
  
      def build_library(self, node, args, kwargs):
          default_library = self.coredata.get_option(OptionKey('default_library', subproject=self.subproject))
          if default_library == 'shared':
              return self.build_target(node, args, kwargs, build.SharedLibrary)
          elif default_library == 'static':
              return self.build_target(node, args, kwargs, build.StaticLibrary)
          elif default_library == 'both':
              return self.build_both_libraries(node, args, kwargs)
          else:
              raise InterpreterException(f'Unknown default_library value: {default_library}.')
  
      def build_target(self, node, args, kwargs, targetclass):
          @FeatureNewKwargs('build target', '0.42.0', ['rust_crate_type', 'build_rpath', 'implicit_include_directories'])
          @FeatureNewKwargs('build target', '0.41.0', ['rust_args'])
          @FeatureNewKwargs('build target', '0.40.0', ['build_by_default'])
          @FeatureNewKwargs('build target', '0.48.0', ['gnu_symbol_visibility'])
          def build_target_decorator_caller(self, node, args, kwargs):
              return True
  
          build_target_decorator_caller(self, node, args, kwargs)
  
          if not args:
              raise InterpreterException('Target does not have a name.')
          name, *sources = args
          for_machine = self.machine_from_native_kwarg(kwargs)
          if 'sources' in kwargs:
              sources += listify(kwargs['sources'])
          sources = self.source_strings_to_files(sources)
          objs = extract_as_list(kwargs, 'objects')
          kwargs['dependencies'] = extract_as_list(kwargs, 'dependencies')
          kwargs['install_mode'] = self._get_kwarg_install_mode(kwargs)
          if 'extra_files' in kwargs:
              ef = extract_as_list(kwargs, 'extra_files')
              kwargs['extra_files'] = self.source_strings_to_files(ef)
          self.check_sources_exist(os.path.join(self.source_root, self.subdir), sources)
          if targetclass not in {build.Executable, build.SharedLibrary, build.SharedModule, build.StaticLibrary, build.Jar}:
              mlog.debug('Unknown target type:', str(targetclass))
              raise RuntimeError('Unreachable code')
          self.kwarg_strings_to_includedirs(kwargs)
  
          # Filter out kwargs from other target types. For example 'soversion'
          # passed to library() when default_library == 'static'.
          kwargs = {k: v for k, v in kwargs.items() if k in targetclass.known_kwargs}
  
          kwargs['include_directories'] = self.extract_incdirs(kwargs)
          target = targetclass(name, self.subdir, self.subproject, for_machine, sources, objs, self.environment, kwargs)
          target.project_version = self.project_version
  
          self.add_stdlib_info(target)
          self.add_target(name, target)
          self.project_args_frozen = True
          return target
  
      def kwarg_strings_to_includedirs(self, kwargs):
          if 'd_import_dirs' in kwargs:
              items = mesonlib.extract_as_list(kwargs, 'd_import_dirs')
              cleaned_items = []
              for i in items:
                  if isinstance(i, str):
                      # BW compatibility. This was permitted so we must support it
                      # for a few releases so people can transition to "correct"
                      # path declarations.
                      if os.path.normpath(i).startswith(self.environment.get_source_dir()):
                          mlog.warning('''Building a path to the source dir is not supported. Use a relative path instead.
  This will become a hard error in the future.''', location=self.current_node)
                          i = os.path.relpath(i, os.path.join(self.environment.get_source_dir(), self.subdir))
                          i = self.build_incdir_object([i])
                  cleaned_items.append(i)
              kwargs['d_import_dirs'] = cleaned_items
  
      def get_used_languages(self, target):
          result = set()
          for i in target.sources:
              for lang, c in self.coredata.compilers[target.for_machine].items():
                  if c.can_compile(i):
                      result.add(lang)
                      break
          return result
  
      def add_stdlib_info(self, target):
          for l in self.get_used_languages(target):
              dep = self.build.stdlibs[target.for_machine].get(l, None)
              if dep:
                  target.add_deps(dep)
  
      def check_sources_exist(self, subdir, sources):
          for s in sources:
              if not isinstance(s, str):
                  continue # This means a generated source and they always exist.
              fname = os.path.join(subdir, s)
              if not os.path.isfile(fname):
                  raise InterpreterException(f'Tried to add non-existing source file {s}.')
  
      # Only permit object extraction from the same subproject
      def validate_extraction(self, buildtarget: mesonlib.HoldableObject) -> None:
          if self.subproject != buildtarget.subproject:
              raise InterpreterException('Tried to extract objects from a different subproject.')
  
      def is_subproject(self) -> bool:
          return self.subproject != ''
  
      @typed_pos_args('set_variable', str, object)
      @noKwargs
      @noArgsFlattening
      @noSecondLevelHolderResolving
      def func_set_variable(self, node: mparser.BaseNode, args: T.Tuple[str, object], kwargs: 'TYPE_kwargs') -> None:
          varname, value = args
          self.set_variable(varname, value, holderify=True)
  
      @typed_pos_args('get_variable', (str, Disabler), optargs=[object])
      @noKwargs
      @noArgsFlattening
      @unholder_return
      def func_get_variable(self, node: mparser.BaseNode, args: T.Tuple[T.Union[str, Disabler], T.Optional[object]],
                            kwargs: 'TYPE_kwargs') -> 'TYPE_var':
          varname, fallback = args
          if isinstance(varname, Disabler):
              return varname
  
          try:
              return self.variables[varname]
          except KeyError:
              if fallback is not None:
                  return self._holderify(fallback)
          raise InterpreterException(f'Tried to get unknown variable "{varname}".')
  
      @typed_pos_args('is_variable', str)
      @noKwargs
      def func_is_variable(self, node: mparser.BaseNode, args: T.Tuple[str], kwargs: 'TYPE_kwargs') -> bool:
          return args[0] in self.variables
  
      @FeatureNew('unset_variable', '0.60.0')
      @typed_pos_args('unset_variable', str)
      @noKwargs
      def func_unset_variable(self, node: mparser.BaseNode, args: T.Tuple[str], kwargs: 'TYPE_kwargs') -> None:
          varname = args[0]
          try:
              del self.variables[varname]
          except KeyError:
              raise InterpreterException(f'Tried to unset unknown variable "{varname}".')
  
      @staticmethod
      def machine_from_native_kwarg(kwargs: T.Dict[str, T.Any]) -> MachineChoice:
          native = kwargs.get('native', False)
          if not isinstance(native, bool):
              raise InvalidArguments('Argument to "native" must be a boolean.')
          return MachineChoice.BUILD if native else MachineChoice.HOST
  
      @FeatureNew('is_disabler', '0.52.0')
      @typed_pos_args('is_disabler', object)
      @noKwargs
      def func_is_disabler(self, node: mparser.BaseNode, args: T.Tuple[object], kwargs: 'TYPE_kwargs') -> bool:
          return isinstance(args[0], Disabler)
  
      @noKwargs
      @FeatureNew('range', '0.58.0')
      @typed_pos_args('range', int, optargs=[int, int])
      def func_range(self, node, args: T.Tuple[int, T.Optional[int], T.Optional[int]], kwargs: T.Dict[str, T.Any]) -> P_OBJ.RangeHolder:
          start, stop, step = args
          # Just like Python's range, we allow range(stop), range(start, stop), or
          # range(start, stop, step)
          if stop is None:
              stop = start
              start = 0
          if step is None:
              step = 1
          # This is more strict than Python's range()
          if start < 0:
              raise InterpreterException('start cannot be negative')
          if stop < start:
              raise InterpreterException('stop cannot be less than start')
          if step < 1:
              raise InterpreterException('step must be >=1')
          return P_OBJ.RangeHolder(start, stop, step, subproject=self.subproject)
  