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bpo-42246: Partial implementation of PEP 626. (GH-23113)

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* Implement new line number table format, as defined in PEP 626.
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Mark Shannon 2020-11-12 09:43:29 +00:00 • committed by GitHub
parent cda99b4022
commit 877df851c3
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19 changed files with 5364 additions and 5000 deletions
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17
Tools/gdb/libpython.py
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@ -648,19 +648,28 @@ class PyCodeObjectPtr(PyObjectPtr):
Analogous to PyCode_Addr2Line; translated from pseudocode in
Objects/lnotab_notes.txt
'''
co_lnotab = self.pyop_field('co_lnotab').proxyval(set())
co_linetable = self.pyop_field('co_linetable').proxyval(set())
# Initialize lineno to co_firstlineno as per PyCode_Addr2Line
# not 0, as lnotab_notes.txt has it:
lineno = int_from_int(self.field('co_firstlineno'))
if addrq < 0:
return lineno
addr = 0
for addr_incr, line_incr in zip(co_lnotab[::2], co_lnotab[1::2]):
for addr_incr, line_incr in zip(co_linetable[::2], co_linetable[1::2]):
if addr_incr == 255:
break
addr += ord(addr_incr)
line_delta = ord(line_incr)
if line_delta == 128:
line_delta = 0
elif line_delta > 128:
line_delta -= 256
lineno += line_delta
if addr > addrq:
return lineno
lineno += ord(line_incr)
return lineno
assert False, "Unreachable"
class PyDictObjectPtr(PyObjectPtr):