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* Document the `co_lines` method on code objects (#113682)Alex Waygood2024-01-031-1/+1
| | | Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
* Note that lnotab_notes.txt is only valid before 3.11 (#107961)Martin DeMello2023-08-151-1/+4
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* bpo-44525: Split calls into PRECALL and CALL (GH-30011)Mark Shannon2021-12-141-2/+2
| | | | | | | | | | * Add 3 new opcodes for calls: PRECALL_METHOD, CALL_NO_KW, CALL_KW. * Update specialization to handle new CALL opcodes. * Specialize call to method descriptors. * Remove old CALL opcodes: CALL_FUNCTION, CALL_METHOD, CALL_METHOD_KW, CALL_FUNCTION_KW.
* Fix typo in lnotab_notes.txt (GH-26711)Gabriele N. Tornetta2021-06-141-1/+1
| | | Thanks for your contribution @P403n1x87
* bpo-42739: Don't use sentinels to mark end of line table. (GH-25657)Mark Shannon2021-04-291-4/+0
| | | | | * Add length parameter to PyLineTable_InitAddressRange and doen't use sentinel values at end of table. Makes the line number table more robust. * Update PyCodeAddressRange to match PEP 626.
* bpo-43494: Make some minor changes to lnotab notes (GH-24861)Skip Montanaro2021-03-191-6/+6
| | | | This cleanup makes no substantive changes.
* bpo-42246: Partial implementation of PEP 626. (GH-23113)Mark Shannon2020-11-121-8/+100
| | | * Implement new line number table format, as defined in PEP 626.
* bpo-38115: Deal with invalid bytecode offsets in lnotab (GH-16079)T. Wouters2019-09-281-1/+3
| | | | | | | | | | Document that lnotab can contain invalid bytecode offsets (because of terrible reasons that are difficult to fix). Make dis.findlinestarts() ignore invalid offsets in lnotab. All other uses of lnotab in CPython (various reimplementations of addr2line or line2addr in Python, C and gdb) already ignore this, because they take an address to look for, instead. Add tests for the result of dis.findlinestarts() on wacky constructs in test_peepholer.py, because it's the easiest place to add them.
* bpo-28810: Update lnotab_notes.txt (#665)Ivan Levkivskyi2017-03-141-22/+28
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* Issue #26107: Fix typo in Objects/lnotab_notes.txtVictor Stinner2016-01-211-6/+6
| | | | Double parenthesis
* co_lnotab supports negative line number deltaVictor Stinner2016-01-201-16/+21
| | | | | | | | | | | | | | | | | | | | | Issue #26107: The format of the co_lnotab attribute of code objects changes to support negative line number delta. Changes: * assemble_lnotab(): if line number delta is less than -128 or greater than 127, emit multiple (offset_delta, lineno_delta) in co_lnotab * update functions decoding co_lnotab to use signed 8-bit integers - dis.findlinestarts() - PyCode_Addr2Line() - _PyCode_CheckLineNumber() - frame_setlineno() * update lnotab_notes.txt * increase importlib MAGIC_NUMBER to 3361 * document the change in What's New in Python 3.6 * cleanup also PyCode_Optimize() to use better variable names
* Merged revisions 72487-72488,72879 via svnmerge fromAlexandre Vassalotti2009-07-211-0/+124
svn+ssh://pythondev@svn.python.org/python/trunk ........ r72487 | jeffrey.yasskin | 2009-05-08 17:51:06 -0400 (Fri, 08 May 2009) | 7 lines PyCode_NewEmpty: Most uses of PyCode_New found by http://www.google.com/codesearch?q=PyCode_New are trying to build an empty code object, usually to put it in a dummy frame object. This patch adds a PyCode_NewEmpty wrapper which lets the user specify just the filename, function name, and first line number, instead of also requiring lots of code internals. ........ r72488 | jeffrey.yasskin | 2009-05-08 18:23:21 -0400 (Fri, 08 May 2009) | 13 lines Issue 5954, PyFrame_GetLineNumber: Most uses of PyCode_Addr2Line (http://www.google.com/codesearch?q=PyCode_Addr2Line) are just trying to get the line number of a specified frame, but there's no way to do that directly. Forcing people to go through the code object makes them know more about the guts of the interpreter than they should need. The remaining uses of PyCode_Addr2Line seem to be getting the line from a traceback (for example, http://www.google.com/codesearch/p?hl=en#u_9_nDrchrw/pygame-1.7.1release/src/base.c&q=PyCode_Addr2Line), which is replaced by the tb_lineno field. So we may be able to deprecate PyCode_Addr2Line entirely for external use. ........ r72879 | jeffrey.yasskin | 2009-05-23 19:23:01 -0400 (Sat, 23 May 2009) | 14 lines Issue #6042: lnotab-based tracing is very complicated and isn't documented very well. There were at least 3 comment blocks purporting to document co_lnotab, and none did a very good job. This patch unifies them into Objects/lnotab_notes.txt which tries to completely capture the current state of affairs. I also discovered that we've attached 2 layers of patches to the basic tracing scheme. The first layer avoids jumping to instructions that don't start a line, to avoid problems in if statements and while loops. The second layer discovered that jumps backward do need to trace at instructions that don't start a line, so it added extra lnotab entries for 'while' and 'for' loops, and added a special case for backward jumps within the same line. I replaced these patches by just treating forward and backward jumps differently. ........
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