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bpo-43950: Add code.co_positions (PEP 657) (GH-26955)

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This PR is part of PEP 657 and augments the compiler to emit ending
line numbers as well as starting and ending columns from the AST
into compiled code objects. This allows bytecodes to be correlated
to the exact source code ranges that generated them.

This information is made available through the following public APIs:

* The `co_positions` method on code objects.
* The C API function `PyCode_Addr2Location`.

Co-authored-by: Batuhan Taskaya <isidentical@gmail.com>
Co-authored-by: Ammar Askar <ammar@ammaraskar.com>
This commit is contained in:
Pablo Galindo 2021-07-02 15:10:11 +01:00 • committed by GitHub
parent 943e77d42d
commit 98eee94421
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15 changed files with 7630 additions and 5185 deletions
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Lib/importlib/_bootstrap_external.py
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@ -361,6 +361,7 @@ _code_type = type(_write_atomic.__code__)
# Python 3.11a1 3456 (interleave cell args bpo-43693)
# Python 3.11a1 3457 (Change localsplus to a bytes object bpo-43693)
# Python 3.11a1 3458 (imported objects now don't use LOAD_METHOD/CALL_METHOD)
# Python 3.11a1 3459 (PEP 657: add end line numbers and column offsets for instructions)
#
# MAGIC must change whenever the bytecode emitted by the compiler may no
@ -370,7 +371,7 @@ _code_type = type(_write_atomic.__code__)
# Whenever MAGIC_NUMBER is changed, the ranges in the magic_values array
# in PC/launcher.c must also be updated.
MAGIC_NUMBER = (3458).to_bytes(2, 'little') + b'\r\n'
MAGIC_NUMBER = (3459).to_bytes(2, 'little') + b'\r\n'
_RAW_MAGIC_NUMBER = int.from_bytes(MAGIC_NUMBER, 'little') # For import.c
_PYCACHE = '__pycache__'