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From 4e6fe24a702b58117e282cf8c9eb612d4e85cd83 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Wed, 2 Nov 2022 10:24:39 +0100
Subject: [PATCH 4/9] warn on equality/inequality with different types
Content-Type: text/plain
---
mesonbuild/interpreterbase/baseobjects.py | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/mesonbuild/interpreterbase/baseobjects.py b/mesonbuild/interpreterbase/baseobjects.py
index a65b0536d..67f294387 100644
--- a/mesonbuild/interpreterbase/baseobjects.py
+++ b/mesonbuild/interpreterbase/baseobjects.py
@@ -12,7 +12,7 @@
# See the License for the specific language governing permissions and
# limitations under the License.
-from .. import mparser
+from .. import mparser, mlog
from .exceptions import InvalidCode, InvalidArguments
from .helpers import flatten, resolve_second_level_holders
from .operator import MesonOperator
@@ -98,6 +98,9 @@ class InterpreterObject:
if op[0] is None and other is not None:
raise MesonBugException(f'The unary operator `{operator.value}` of {self.display_name()} was passed the object {other} of type {type(other).__name__}')
if op[0] is not None and not isinstance(other, op[0]):
+ if operator in (MesonOperator.EQUALS, MesonOperator.NOT_EQUALS):
+ mlog.warning(f'Trying to compare values of different types ({self.display_name()}, {type(other).__name__})')
+ return operator == MesonOperator.NOT_EQUALS
raise InvalidArguments(f'The `{operator.value}` operator of {self.display_name()} does not accept objects of type {type(other).__name__} ({other})')
return op[1](other)
if operator in self.operators:
@@ -106,12 +109,8 @@ class InterpreterObject:
# Default comparison operator support
def _throw_comp_exception(self, other: TYPE_var, opt_type: str) -> T.NoReturn:
- raise InvalidArguments(textwrap.dedent(
- f'''
- Trying to compare values of different types ({self.display_name()}, {type(other).__name__}) using {opt_type}.
- This was deprecated and undefined behavior previously and is as of 0.60.0 a hard error.
- '''
- ))
+ mlog.warning(
+ 'Trying to compare values of different types ({self.display_name()}, {type(other).__name__}) using {opt_type}.')
def op_equals(self, other: TYPE_var) -> bool:
# We use `type(...) == type(...)` here to enforce an *exact* match for comparison. We
@@ -119,11 +118,12 @@ class InterpreterObject:
# would pass because this comparison must never be true: `derived_obj == base_obj`
if type(self) != type(other):
self._throw_comp_exception(other, '==')
+ return False
return self == other
def op_not_equals(self, other: TYPE_var) -> bool:
if type(self) != type(other):
- self._throw_comp_exception(other, '!=')
+ return True
return self != other
class MesonInterpreterObject(InterpreterObject):
@@ -157,11 +157,13 @@ class ObjectHolder(InterpreterObject, T.Generic[InterpreterObjectTypeVar]):
# See the comment from InterpreterObject why we are using `type()` here.
if type(self.held_object) != type(other):
self._throw_comp_exception(other, '==')
+ return False
return self.held_object == other
def op_not_equals(self, other: TYPE_var) -> bool:
if type(self.held_object) != type(other):
self._throw_comp_exception(other, '!=')
+ return True
return self.held_object != other
def __repr__(self) -> str:
--
2.38.1