90 lines
3.6 KiB
Diff
90 lines
3.6 KiB
Diff
From 6a6925e691681aa5bc05b42bf1f1f06adeb25722 Mon Sep 17 00:00:00 2001
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From: Frank Hoffmann <15r10nk-git@polarbit.de>
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Date: Sun, 15 Sep 2024 14:24:10 +0200
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Subject: [PATCH] fix: handle changed positions for __exit__ of ast.With
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---
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executing/_position_node_finder.py | 50 +++++++++++++++++++
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...3cd3a42b54914d66f7a67f8b2ade36f89ed761b.py | 3 ++
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2 files changed, 53 insertions(+)
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create mode 100644 tests/small_samples/3e40f2921fbaf6ccbabb2fa5c3cd3a42b54914d66f7a67f8b2ade36f89ed761b.py
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diff --git a/executing/_position_node_finder.py b/executing/_position_node_finder.py
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index c923822..0f83441 100644
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--- a/executing/_position_node_finder.py
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+++ b/executing/_position_node_finder.py
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@@ -257,6 +257,51 @@ def fix_result(
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# https://github.com/python/cpython/issues/123142
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return node.parent.parent
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+
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+ if sys.version_info >= (3, 12,6) and instruction.opname == "CALL":
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+ before = self.instruction_before(instruction)
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+ if (
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+ before is not None
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+ and before.opname == "LOAD_CONST"
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+ and before.positions == instruction.positions
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+ and isinstance(node.parent, ast.withitem)
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+ and node is node.parent.context_expr
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+ ):
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+ # node positions for with-statements have change
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+ # and is now equal to the expression which created the context-manager
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+ # https://github.com/python/cpython/pull/120763
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+
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+ # with context_manager:
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+ # ...
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+
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+ # but there is one problem to distinguish call-expressions from __exit__()
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+
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+ # with context_manager():
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+ # ...
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+
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+ # the call for __exit__
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+
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+ # 20 1:5 1:22 LOAD_CONST(None)
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+ # 22 1:5 1:22 LOAD_CONST(None)
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+ # 24 1:5 1:22 LOAD_CONST(None)
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+ # 26 1:5 1:22 CALL() # <-- same source range as context_manager()
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+
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+ # but we can use the fact that the previous load for None
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+ # has the same source range as the call, wich can not happen for normal calls
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+
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+ # we return the same ast.With statement at the and to preserve backward compatibility
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+
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+ return node.parent.parent
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+
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+ if (
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+ sys.version_info >= (3, 12,6)
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+ and instruction.opname == "BEFORE_WITH"
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+ and isinstance(node.parent, ast.withitem)
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+ and node is node.parent.context_expr
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+ ):
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+ # handle positions changes for __enter__
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+ return node.parent.parent
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+
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return node
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def known_issues(self, node: EnhancedAST, instruction: dis.Instruction) -> None:
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@@ -895,6 +940,11 @@ def node_match(node_type: Union[Type, Tuple[Type, ...]], **kwargs: Any) -> bool:
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def instruction(self, index: int) -> Optional[dis.Instruction]:
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return self.bc_dict.get(index,None)
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+ def instruction_before(
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+ self, instruction: dis.Instruction
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+ ) -> Optional[dis.Instruction]:
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+ return self.bc_dict.get(instruction.offset - 2, None)
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+
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def opname(self, index: int) -> str:
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i=self.instruction(index)
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if i is None:
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diff --git a/tests/small_samples/3e40f2921fbaf6ccbabb2fa5c3cd3a42b54914d66f7a67f8b2ade36f89ed761b.py b/tests/small_samples/3e40f2921fbaf6ccbabb2fa5c3cd3a42b54914d66f7a67f8b2ade36f89ed761b.py
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new file mode 100644
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index 0000000..bfffc14
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--- /dev/null
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+++ b/tests/small_samples/3e40f2921fbaf6ccbabb2fa5c3cd3a42b54914d66f7a67f8b2ade36f89ed761b.py
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@@ -0,0 +1,3 @@
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+async def wait():
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+ async with something:
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+ pass
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\ No newline at end of file
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