coredata: use a Protocol for shared options between setup configure and dist

These are all passed around interchangably inside Meson, so use a shared
protocol for them.

mesonbuild/ast/introspection.py

@@ -5,7 +5,6 @@
 # or an interpreter-based tool
 
 from __future__ import annotations
-import argparse
 import copy
 import os
 import typing as T
@@ -31,13 +30,13 @@ BUILD_TARGET_FUNCTIONS = [
     'static_library', 'both_libraries'
 ]
 
-class IntrospectionHelper(argparse.Namespace):
+class IntrospectionHelper:
     # mimic an argparse namespace
-    def __init__(self, cross_file: str):
-        super().__init__()
-        self.cross_file = cross_file
-        self.native_file: str = None
-        self.cmd_line_options: T.Dict[str, str] = {}
+    def __init__(self, cross_file: T.Optional[str]):
+        self.cross_file = [cross_file] if cross_file is not None else []
+        self.native_file: T.List[str] = []
+        self.cmd_line_options: T.Dict[OptionKey, str] = {}
+        self.projectoptions: T.List[str] = []
 
     def __eq__(self, other: object) -> bool:
         return NotImplemented

mesonbuild/coredata.py

@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: Apache-2.0
 # Copyright 2013-2023 The Meson development team
+# Copyright © 2023 Intel Corporation
 
 from __future__ import annotations
 
@@ -31,6 +32,8 @@ import shlex
 import typing as T
 
 if T.TYPE_CHECKING:
+    from typing_extensions import Protocol
+
     from . import dependencies
     from .compilers.compilers import Compiler, CompileResult, RunResult, CompileCheckMode
     from .dependencies.detect import TV_DepID
@@ -38,6 +41,21 @@ if T.TYPE_CHECKING:
     from .mesonlib import FileOrString
     from .cmake.traceparser import CMakeCacheEntry
 
+    class SharedCMDOptions(Protocol):
+
+        """Representation of command line options from Meson setup, configure,
+        and dist.
+
+        :param projectoptions: The raw list of command line options given
+        :param cmd_line_options: command line options parsed into an OptionKey:
+            str mapping
+        """
+
+        cmd_line_options: T.Dict[OptionKey, str]
+        projectoptions: T.List[str]
+        cross_file: T.List[str]
+        native_file: T.List[str]
+
     OptionDictType = T.Union[T.Dict[str, 'UserOption[T.Any]'], 'OptionsView']
     MutableKeyedOptionDictType = T.Dict['OptionKey', 'UserOption[T.Any]']
     KeyedOptionDictType = T.Union[MutableKeyedOptionDictType, 'OptionsView']
@@ -546,7 +564,7 @@ _V = T.TypeVar('_V')
 
 class CoreData:
 
-    def __init__(self, options: argparse.Namespace, scratch_dir: str, meson_command: T.List[str]):
+    def __init__(self, options: SharedCMDOptions, scratch_dir: str, meson_command: T.List[str]):
         self.lang_guids = {
             'default': '8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942',
             'c': '8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942',
@@ -587,7 +605,7 @@ class CoreData:
         self.init_builtins('')
 
     @staticmethod
-    def __load_config_files(options: argparse.Namespace, scratch_dir: str, ftype: str) -> T.List[str]:
+    def __load_config_files(options: SharedCMDOptions, scratch_dir: str, ftype: str) -> T.List[str]:
         # Need to try and make the passed filenames absolute because when the
         # files are parsed later we'll have chdir()d.
         if ftype == 'cross':
@@ -1123,7 +1141,7 @@ def parse_machine_files(filenames: T.List[str], sourcedir: str):
 def get_cmd_line_file(build_dir: str) -> str:
     return os.path.join(build_dir, 'meson-private', 'cmd_line.txt')
 
-def read_cmd_line_file(build_dir: str, options: argparse.Namespace) -> None:
+def read_cmd_line_file(build_dir: str, options: SharedCMDOptions) -> None:
     filename = get_cmd_line_file(build_dir)
     if not os.path.isfile(filename):
         return
@@ -1145,7 +1163,7 @@ def read_cmd_line_file(build_dir: str, options: argparse.Namespace) -> None:
         # literal_eval to get it into the list of strings.
         options.native_file = ast.literal_eval(properties.get('native_file', '[]'))
 
-def write_cmd_line_file(build_dir: str, options: argparse.Namespace) -> None:
+def write_cmd_line_file(build_dir: str, options: SharedCMDOptions) -> None:
     filename = get_cmd_line_file(build_dir)
     config = CmdLineFileParser()
 
@@ -1160,7 +1178,7 @@ def write_cmd_line_file(build_dir: str, options: argparse.Namespace) -> None:
     with open(filename, 'w', encoding='utf-8') as f:
         config.write(f)
 
-def update_cmd_line_file(build_dir: str, options: argparse.Namespace) -> None:
+def update_cmd_line_file(build_dir: str, options: SharedCMDOptions) -> None:
     filename = get_cmd_line_file(build_dir)
     config = CmdLineFileParser()
     config.read(filename)
@@ -1168,7 +1186,7 @@ def update_cmd_line_file(build_dir: str, options: argparse.Namespace) -> None:
     with open(filename, 'w', encoding='utf-8') as f:
         config.write(f)
 
-def format_cmd_line_options(options: argparse.Namespace) -> str:
+def format_cmd_line_options(options: SharedCMDOptions) -> str:
     cmdline = ['-D{}={}'.format(str(k), v) for k, v in options.cmd_line_options.items()]
     if options.cross_file:
         cmdline += [f'--cross-file={f}' for f in options.cross_file]
@@ -1226,7 +1244,7 @@ def create_options_dict(options: T.List[str], subproject: str = '') -> T.Dict[Op
         result[k] = value
     return result
 
-def parse_cmd_line_options(args: argparse.Namespace) -> None:
+def parse_cmd_line_options(args: SharedCMDOptions) -> None:
     args.cmd_line_options = create_options_dict(args.projectoptions)
 
     # Merge builtin options set with --option into the dict.

mesonbuild/environment.py

@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: Apache-2.0
 # Copyright 2012-2020 The Meson development team
+# Copyright © 2023 Intel Corporation
 
 from __future__ import annotations
 
@@ -35,7 +36,6 @@ from functools import lru_cache
 from mesonbuild import envconfig
 
 if T.TYPE_CHECKING:
-    import argparse
     from configparser import ConfigParser
 
     from .compilers import Compiler
@@ -485,7 +485,7 @@ class Environment:
     log_dir = 'meson-logs'
     info_dir = 'meson-info'
 
-    def __init__(self, source_dir: str, build_dir: str, options: 'argparse.Namespace') -> None:
+    def __init__(self, source_dir: str, build_dir: str, options: coredata.SharedCMDOptions) -> None:
         self.source_dir = source_dir
         self.build_dir = build_dir
         # Do not try to create build directories when build_dir is none.
@@ -780,7 +780,7 @@ class Environment:
                         self.properties[for_machine].properties.setdefault(name, p_env)
                     break
 
-    def create_new_coredata(self, options: 'argparse.Namespace') -> None:
+    def create_new_coredata(self, options: coredata.SharedCMDOptions) -> None:
         # WARNING: Don't use any values from coredata in __init__. It gets
         # re-initialized with project options by the interpreter during
         # build file parsing.

mesonbuild/interpreter/interpreter.py

@@ -106,8 +106,6 @@ import importlib
 import copy
 
 if T.TYPE_CHECKING:
-    import argparse
-
     from . import kwargs as kwtypes
     from ..backend.backends import Backend
     from ..interpreterbase.baseobjects import InterpreterObject, TYPE_var, TYPE_kwargs
@@ -269,7 +267,7 @@ class Interpreter(InterpreterBase, HoldableObject):
                 ast: T.Optional[mparser.CodeBlockNode] = None,
                 is_translated: bool = False,
                 relaxations: T.Optional[T.Set[InterpreterRuleRelaxation]] = None,
-                user_defined_options: T.Optional['argparse.Namespace'] = None,
+                user_defined_options: T.Optional[coredata.SharedCMDOptions] = None,
             ) -> None:
         super().__init__(_build.environment.get_source_dir(), subdir, subproject)
         self.active_projectname = ''

mesonbuild/mdist.py

@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: Apache-2.0
 # Copyright 2017 The Meson development team
+# Copyright © 2023 Intel Corporation
 
 from __future__ import annotations
 
@@ -304,7 +305,7 @@ def check_dist(packagename: str, meson_command: ImmutableListProtocol[str], extr
 def create_cmdline_args(bld_root: str) -> T.List[str]:
     parser = argparse.ArgumentParser()
     msetup_argparse(parser)
-    args = parser.parse_args([])
+    args = T.cast('coredata.SharedCMDOptions', parser.parse_args([]))
     coredata.parse_cmd_line_options(args)
     coredata.read_cmd_line_file(bld_root, args)
     args.cmd_line_options.pop(OptionKey('backend'), '')

run_tests.py

@@ -1,6 +1,9 @@
 #!/usr/bin/env python3
 # SPDX-License-Identifier: Apache-2.0
 # Copyright 2012-2021 The Meson development team
+# Copyright © 2023-2024 Intel Corporation
+
+from __future__ import annotations
 
 # Work around some pathlib bugs...
 from mesonbuild import _pathlib
@@ -33,6 +36,9 @@ from mesonbuild.environment import Environment, detect_ninja, detect_machine_inf
 from mesonbuild.coredata import backendlist, version as meson_version
 from mesonbuild.mesonlib import OptionKey, setup_vsenv
 
+if T.TYPE_CHECKING:
+    from mesonbuild.coredata import SharedCMDOptions
+
 NINJA_1_9_OR_NEWER = False
 NINJA_CMD = None
 # If we're on CI, detecting ninja for every subprocess unit test that we run is slow
@@ -133,9 +139,8 @@ class FakeCompilerOptions:
     def __init__(self):
         self.value = []
 
-# TODO: use a typing.Protocol here
-def get_fake_options(prefix: str = '') -> argparse.Namespace:
-    opts = argparse.Namespace()
+def get_fake_options(prefix: str = '') -> SharedCMDOptions:
+    opts = T.cast('SharedCMDOptions', argparse.Namespace())
     opts.native_file = []
     opts.cross_file = None
     opts.wrap_mode = None