interpreter: Add a new MesonInterpreterObject for non-elementary objects

mesonbuild/ast/interpreter.py

@@ -16,10 +16,20 @@
 # or an interpreter-based tool.
 
 from .visitor import AstVisitor
-from .. import interpreterbase, mparser, mesonlib
+from .. import mparser, mesonlib
 from .. import environment
 
-from ..interpreterbase import InvalidArguments, BreakRequest, ContinueRequest, TYPE_nvar, TYPE_nkwargs
+from ..interpreterbase import (
+    MesonInterpreterObject,
+    InterpreterBase,
+    InvalidArguments,
+    BreakRequest,
+    ContinueRequest,
+    default_resolve_key,
+    TYPE_nvar,
+    TYPE_nkwargs,
+)
+
 from ..mparser import (
     AndNode,
     ArgumentNode,
@@ -45,28 +55,28 @@ from ..mparser import (
 import os, sys
 import typing as T
 
-class DontCareObject(interpreterbase.InterpreterObject):
+class DontCareObject(MesonInterpreterObject):
     pass
 
-class MockExecutable(interpreterbase.InterpreterObject):
+class MockExecutable(MesonInterpreterObject):
     pass
 
-class MockStaticLibrary(interpreterbase.InterpreterObject):
+class MockStaticLibrary(MesonInterpreterObject):
     pass
 
-class MockSharedLibrary(interpreterbase.InterpreterObject):
+class MockSharedLibrary(MesonInterpreterObject):
     pass
 
-class MockCustomTarget(interpreterbase.InterpreterObject):
+class MockCustomTarget(MesonInterpreterObject):
     pass
 
-class MockRunTarget(interpreterbase.InterpreterObject):
+class MockRunTarget(MesonInterpreterObject):
     pass
 
 ADD_SOURCE = 0
 REMOVE_SOURCE = 1
 
-class AstInterpreter(interpreterbase.InterpreterBase):
+class AstInterpreter(InterpreterBase):
     def __init__(self, source_root: str, subdir: str, subproject: str, visitors: T.Optional[T.List[AstVisitor]] = None):
         super().__init__(source_root, subdir, subproject)
         self.visitors = visitors if visitors is not None else []
@@ -224,7 +234,7 @@ class AstInterpreter(interpreterbase.InterpreterBase):
     def reduce_arguments(
                 self,
                 args: mparser.ArgumentNode,
-                key_resolver: T.Callable[[mparser.BaseNode], str] = interpreterbase.default_resolve_key,
+                key_resolver: T.Callable[[mparser.BaseNode], str] = default_resolve_key,
                 duplicate_key_error: T.Optional[str] = None,
             ) -> T.Tuple[T.List[TYPE_nvar], TYPE_nkwargs]:
         if isinstance(args, ArgumentNode):

mesonbuild/interpreter/interpreter.py

@@ -394,7 +394,7 @@ class Interpreter(InterpreterBase):
 
         if isinstance(item, build.CustomTarget):
             return CustomTargetHolder(item, self)
-        elif isinstance(item, (int, str, bool, Disabler, InterpreterObject, mesonlib.File)) or item is None:
+        elif isinstance(item, (int, str, bool, InterpreterObject, mesonlib.File)) or item is None:
             return item
         elif isinstance(item, build.Executable):
             return ExecutableHolder(item, self)
@@ -414,7 +414,7 @@ class Interpreter(InterpreterBase):
             return MutableModuleObjectHolder(item, self)
         elif isinstance(item, ModuleObject):
             return ModuleObjectHolder(item, self)
-        elif isinstance(item, (InterpreterObject, ObjectHolder)):
+        elif isinstance(item, InterpreterObject):
             return item
         else:
             raise InterpreterException('Module returned a value of unknown type.')

mesonbuild/interpreter/interpreterobjects.py

@@ -13,8 +13,8 @@ from .. import mlog
 
 from ..modules import ModuleReturnValue, ModuleObject, ModuleState, ExtensionModule
 from ..backend.backends import TestProtocol
-from ..interpreterbase import (ContainerTypeInfo, InterpreterObject, KwargInfo,
-                               ObjectHolder, MutableInterpreterObject,
+from ..interpreterbase import (ContainerTypeInfo, KwargInfo,
+                               MesonInterpreterObject, ObjectHolder, MutableInterpreterObject,
                                FeatureNewKwargs, FeatureNew, FeatureDeprecated,
                                typed_kwargs, typed_pos_args, stringArgs,
                                permittedKwargs, noArgsFlattening, noPosargs,
@@ -145,7 +145,7 @@ class FeatureOptionHolder(ObjectHolder[coredata.UserFeatureOption]):
         return self if self.value != 'auto' or not args[0] else self.as_disabled()
 
 
-class RunProcess(InterpreterObject):
+class RunProcess(MesonInterpreterObject):
 
     def __init__(self, cmd, args, env, source_dir, build_dir, subdir, mesonintrospect, in_builddir=False, check=False, capture=True):
         super().__init__()
@@ -718,13 +718,13 @@ class GeneratedObjectsHolder(ObjectHolder[build.ExtractedObjects]):
     def __init__(self, held_object: build.ExtractedObjects):
         super().__init__(held_object)
 
-class Test(InterpreterObject):
+class Test(MesonInterpreterObject):
     def __init__(self, name: str, project: str, suite: T.List[str], exe: build.Executable,
                  depends: T.List[T.Union[build.CustomTarget, build.BuildTarget]],
                  is_parallel: bool, cmd_args: T.List[str], env: build.EnvironmentVariables,
                  should_fail: bool, timeout: int, workdir: T.Optional[str], protocol: str,
                  priority: int):
-        InterpreterObject.__init__(self)
+        super().__init__()
         self.name = name
         self.suite = suite
         self.project_name = project

mesonbuild/interpreter/mesonmain.py

@@ -7,7 +7,7 @@ from .. import mlog
 
 from ..mesonlib import unholder, MachineChoice, OptionKey
 from ..programs import OverrideProgram, ExternalProgram
-from ..interpreterbase import (InterpreterObject, FeatureNewKwargs, FeatureNew, FeatureDeprecated,
+from ..interpreterbase import (MesonInterpreterObject, FeatureNewKwargs, FeatureNew, FeatureDeprecated,
                                typed_pos_args, permittedKwargs, noArgsFlattening, noPosargs, noKwargs,
                                MesonVersionString, InterpreterException)
 
@@ -18,9 +18,12 @@ from .interpreterobjects import (ExecutableHolder, ExternalProgramHolder,
 
 import typing as T
 
-class MesonMain(InterpreterObject):
+if T.TYPE_CHECKING:
+    from .interpreter import Interpreter
+
+class MesonMain(MesonInterpreterObject):
     def __init__(self, build: 'build.Build', interpreter: 'Interpreter'):
-        InterpreterObject.__init__(self)
+        super().__init__()
         self.build = build
         self.interpreter = interpreter
         self.methods.update({'get_compiler': self.get_compiler_method,

mesonbuild/interpreterbase/__init__.py

@@ -14,6 +14,7 @@
 
 __all__ = [
     'InterpreterObject',
+    'MesonInterpreterObject',
     'ObjectHolder',
     'RangeHolder',
     'MesonVersionString',
@@ -64,6 +65,7 @@ __all__ = [
 
 from .baseobjects import (
     InterpreterObject,
+    MesonInterpreterObject,
     ObjectHolder,
     RangeHolder,
     MutableInterpreterObject,

mesonbuild/interpreterbase/baseobjects.py

@@ -51,12 +51,15 @@ class InterpreterObject:
             return method(args, kwargs)
         raise InvalidCode('Unknown method "%s" in object.' % method_name)
 
+class MesonInterpreterObject(InterpreterObject):
+    ''' All non-elementary objects should be derived from this '''
+
 class MutableInterpreterObject:
     ''' Dummy class to mark the object type as mutable '''
 
 TV_InterpreterObject = T.TypeVar('TV_InterpreterObject')
 
-class ObjectHolder(InterpreterObject, T.Generic[TV_InterpreterObject]):
+class ObjectHolder(MesonInterpreterObject, T.Generic[TV_InterpreterObject]):
     def __init__(self, obj: TV_InterpreterObject, *, subproject: T.Optional[str] = None) -> None:
         super().__init__(subproject=subproject)
         self.held_object = obj
@@ -64,7 +67,7 @@ class ObjectHolder(InterpreterObject, T.Generic[TV_InterpreterObject]):
     def __repr__(self) -> str:
         return f'<Holder: {self.held_object!r}>'
 
-class RangeHolder(InterpreterObject):
+class RangeHolder(MesonInterpreterObject):
     def __init__(self, start: int, stop: int, step: int, *, subproject: T.Optional[str] = None) -> None:
         super().__init__(subproject=subproject)
         self.range = range(start, stop, step)

mesonbuild/interpreterbase/disabler.py

@@ -12,10 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from .baseobjects import InterpreterObject
+from .baseobjects import MesonInterpreterObject
 import typing as T
 
-class Disabler(InterpreterObject):
+class Disabler(MesonInterpreterObject):
     def __init__(self) -> None:
         super().__init__()
         self.methods.update({'found': self.found_method})