jinx/python-uncompyle6
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fix for the with statement

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This commit is contained in:
Mysterie
2012-06-14 14:48:08 +02:00
parent c7506289db
commit fd44d2e19f
3 changed files with 117 additions and 37 deletions
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77
uncompyle2/Scanner25.py
View File

@@ -57,9 +57,9 @@ class Scanner:
# linestarts contains bloc code adresse (addr,block)
self.linestarts = list(dis.findlinestarts(co))
self.prev = [0]
pop_delet = 0
i=0
# change jump struct
self.restructRelativeJump()
# class and names
if classname:
classname = '_' + classname.lstrip('_') + '__'
@@ -78,15 +78,13 @@ class Scanner:
self.names = names
# add instruction to remonde in "toDel" list
toDel = []
while i < n-pop_delet:
# add instruction to change in "toChange" list
self.toChange = []
for i in self.op_range(0, n):
op = self.code[i]
ret = self.getOpcodeToDel(i)
if ret != None:
toDel += ret
if op >= dis.HAVE_ARGUMENT:
i += 2
i += 1
if toDel: # degeu a revoir / repenser (tout faire d'un coup? chaud)
toDel = sorted(list(set(toDel)))
delta = 0
@@ -103,8 +101,9 @@ class Scanner:
self.code.pop(x-delta)
self.restructCode(x-delta)
delta += 1
# mapping adresses of prev instru
n = len(self.code)
n = len(self.code)
for i in self.op_range(0, n):
op = self.code[i]
self.prev.append(i)
@@ -152,19 +151,19 @@ class Scanner:
if self.code[last_import] == IMPORT_NAME == self.code[i]:
replace[i] = 'IMPORT_NAME_CONT'
last_import = i
extended_arg = 0
for offset in self.op_range(0, n):
op = self.code[offset]
opname = dis.opname[op]
oparg = None; pattr = None
if offset in cf:
k = 0
for j in cf[offset]:
rv.append(Token('COME_FROM', None, repr(j),
offset="%s_%d" % (offset, k) ))
k += 1
op = self.code[offset]
opname = dis.opname[op]
oparg = None; pattr = None
if op >= HAVE_ARGUMENT:
oparg = self.get_argument(offset) + extended_arg
extended_arg = 0
@@ -204,7 +203,10 @@ class Scanner:
pattr = dis.cmp_op[oparg]
elif op in dis.hasfree:
pattr = free[oparg]
if offset in self.toChange:
if self.code[offset] == JA and self.code[oparg] == WITH_CLEANUP:
opname = 'SETUP_WITH'
cf[oparg] = cf.get(oparg, []) + [offset]
if op in (BUILD_LIST, BUILD_TUPLE, BUILD_SLICE,
UNPACK_SEQUENCE,
MAKE_FUNCTION, CALL_FUNCTION, MAKE_CLOSURE,
@@ -244,7 +246,7 @@ class Scanner:
rv.append(Token(opname, oparg, pattr, offset, linestart = offset in linestartoffsets))
else:
rv.append(Token(replace[offset], oparg, pattr, offset, linestart = offset in linestartoffsets))
if self.showasm:
out = self.out # shortcut
for t in rv:
@@ -321,6 +323,46 @@ class Scanner:
end = self.first_instr(i, end, YIELD_VALUE)
if end and self.code[end+1] == POP_TOP and self.code[end+2] == JA and self.code[end+5] == POP_BLOCK:
return [i,end+5]
# with stmt
if opcode == WITH_CLEANUP:
chckDel = i-self.op_size(DELETE_NAME)
assert self.code[chckDel] in (DELETE_NAME, DELETE_FAST)
toDel = [chckDel]
nameDel = self.get_argument(chckDel)
chckDel -= self.op_size(LOAD_NAME)
assert self.code[chckDel] in (LOAD_NAME, LOAD_FAST)
toDel += [chckDel]
allStore = self.all_instr(0, i, (STORE_NAME,STORE_FAST))
chckStore = -1
for store in allStore:
if nameDel == self.get_argument(store):
if self.code[store+3] == LOAD_ATTR and self.code[store-3] == LOAD_ATTR \
and self.code[store-4] == DUP_TOP:
chckStore = store
assert chckStore > 0
toDel += [chckStore-4,chckStore-3,chckStore+3]
chckStp = -1
allSetup = self.all_instr(chckStore+3, i, (SETUP_FINALLY))
for stp in allSetup:
if chckDel == self.get_target(stp):
chckStp = stp
assert chckStp > 0
toDel += [chckStp]
chckDel = chckStore+3+self.op_size(self.code[chckStore+3])
while chckDel < chckStp-3:
toDel += [chckDel]
chckDel += self.op_size(self.code[chckDel])
if self.code[chckStp-3] in (STORE_NAME,STORE_FAST) and self.code[chckStp+3] in (LOAD_NAME,LOAD_FAST) \
and self.code[chckStp+6] in (DELETE_NAME,DELETE_FAST):
toDel += [chckStp-3,chckStp+3,chckStp+6]
# SETUP_WITH opcode dosen't exist in 2.5 but is necessary for the grammar
self.code[chckStore] = JUMP_ABSOLUTE # ugly hack
self.code[chckStore+1] = i & 0xFF
self.code[chckStore+2] = (i >> 8) & 0xFF
self.toChange.append(chckStore)
return toDel
return None
def restructRelativeJump(self):
@@ -358,7 +400,10 @@ class Scanner:
else:
result.append((item[0], item[1]))
self.linestarts = result
for change in self.toChange:
if change > i:
self.toChange[self.toChange.index(change)] -= 1
for x in self.op_range(0, len(self.code)):
op = self.code[x]
if op >= HAVE_ARGUMENT:

71
uncompyle2/Scanner26.py
View File

@@ -57,9 +57,9 @@ class Scanner:
# linestarts contains bloc code adresse (addr,block)
self.linestarts = list(dis.findlinestarts(co))
self.prev = [0]
pop_delet = 0
i=0
# change jump struct
self.restructRelativeJump()
# class and names
if classname:
classname = '_' + classname.lstrip('_') + '__'
@@ -78,15 +78,13 @@ class Scanner:
self.names = names
# add instruction to remonde in "toDel" list
toDel = []
while i < n-pop_delet:
# add instruction to change in "toChange" list
self.toChange = []
for i in self.op_range(0, n):
op = self.code[i]
ret = self.getOpcodeToDel(i)
if ret != None:
toDel += ret
if op >= dis.HAVE_ARGUMENT:
i += 2
i += 1
if toDel: # degeu a revoir / repenser (tout faire d'un coup? chaud)
toDel = sorted(list(set(toDel)))
delta = 0
@@ -103,8 +101,9 @@ class Scanner:
self.code.pop(x-delta)
self.restructCode(x-delta)
delta += 1
# mapping adresses of prev instru
n = len(self.code)
n = len(self.code)
for i in self.op_range(0, n):
op = self.code[i]
self.prev.append(i)
@@ -152,19 +151,19 @@ class Scanner:
if self.code[last_import] == IMPORT_NAME == self.code[i]:
replace[i] = 'IMPORT_NAME_CONT'
last_import = i
extended_arg = 0
for offset in self.op_range(0, n):
op = self.code[offset]
opname = dis.opname[op]
oparg = None; pattr = None
if offset in cf:
k = 0
for j in cf[offset]:
rv.append(Token('COME_FROM', None, repr(j),
offset="%s_%d" % (offset, k) ))
k += 1
op = self.code[offset]
opname = dis.opname[op]
oparg = None; pattr = None
if op >= HAVE_ARGUMENT:
oparg = self.get_argument(offset) + extended_arg
extended_arg = 0
@@ -204,7 +203,10 @@ class Scanner:
pattr = dis.cmp_op[oparg]
elif op in dis.hasfree:
pattr = free[oparg]
if offset in self.toChange:
if self.code[offset] == JA and self.code[oparg] == WITH_CLEANUP:
opname = 'SETUP_WITH'
cf[oparg] = cf.get(oparg, []) + [offset]
if op in (BUILD_LIST, BUILD_TUPLE, BUILD_SLICE,
UNPACK_SEQUENCE,
MAKE_FUNCTION, CALL_FUNCTION, MAKE_CLOSURE,
@@ -244,7 +246,7 @@ class Scanner:
rv.append(Token(opname, oparg, pattr, offset, linestart = offset in linestartoffsets))
else:
rv.append(Token(replace[offset], oparg, pattr, offset, linestart = offset in linestartoffsets))
if self.showasm:
out = self.out # shortcut
for t in rv:
@@ -258,10 +260,10 @@ class Scanner:
"""
opcode = self.code[i]
opsize = self.op_size(opcode)
if i+opsize >= len(self.code):
return None
if opcode == EXTENDED_ARG:
raise 'TODO'
# del POP_TOP
@@ -325,6 +327,36 @@ class Scanner:
end = self.first_instr(i, end, YIELD_VALUE)
if end and self.code[end+1] == POP_TOP and self.code[end+2] == JA and self.code[end+5] == POP_BLOCK:
return [i,end+5]
# with stmt
if opcode == WITH_CLEANUP:
allRot = self.all_instr(0, i, (ROT_TWO))
chckRot = -1
for rot in allRot:
if self.code[rot+1] == LOAD_ATTR and self.code[rot-3] == LOAD_ATTR \
and self.code[rot-4] == DUP_TOP:
chckRot = rot
assert chckRot > 0
toDel = [chckRot-4,chckRot-3,chckRot]
chckStp = -1
allSetup = self.all_instr(chckRot+1, i, (SETUP_FINALLY))
for stp in allSetup:
if i == self.get_target(stp):
chckStp = stp
assert chckStp > 0
toDel += [chckStp]
chckDel = chckRot+1+self.op_size(self.code[chckRot+1])
while chckDel < chckStp-3:
toDel += [chckDel]
chckDel += self.op_size(self.code[chckDel])
if self.code[chckStp-3] in (STORE_NAME,STORE_FAST) and self.code[chckStp+3] in (LOAD_NAME,LOAD_FAST) \
and self.code[chckStp+6] in (DELETE_NAME,DELETE_FAST):
toDel += [chckStp-3,chckStp+3,chckStp+6]
# SETUP_WITH opcode dosen't exist in 2.6 but is necessary for the grammar
self.code[chckRot+1] = JUMP_ABSOLUTE # ugly hack
self.code[chckRot+2] = i & 0xFF
self.code[chckRot+3] = (i >> 8) & 0xFF
self.toChange.append(chckRot+1)
return toDel
return None
def restructRelativeJump(self):
@@ -362,7 +394,10 @@ class Scanner:
else:
result.append((item[0], item[1]))
self.linestarts = result
for change in self.toChange:
if change > i:
self.toChange[self.toChange.index(change)] -= 1
for x in self.op_range(0, len(self.code)):
op = self.code[x]
if op >= HAVE_ARGUMENT:

6
uncompyle2/__init__.py
View File

@@ -206,7 +206,7 @@ def main(in_base, out_base, files, codes, outfile=None,
raise
except:
failed_files += 1
sys.stderr.write("### Can't uncompyle %s\n" % infile)
sys.stderr.write("\n# Can't uncompyle %s\n" % infile)
if outfile:
outstream.close()
os.rename(outfile, outfile + '_failed')
@@ -219,7 +219,7 @@ def main(in_base, out_base, files, codes, outfile=None,
if do_verify:
try:
verify.compare_code_with_srcfile(infile, outfile)
print '# okay decompyling', infile, __memUsage()
print '\n# okay decompyling', infile, __memUsage()
okay_files += 1
except verify.VerifyCmpError, e:
verify_failed_files += 1
@@ -228,5 +228,5 @@ def main(in_base, out_base, files, codes, outfile=None,
print >>sys.stderr, e
else:
okay_files += 1
print '# okay decompyling', infile, __memUsage()
print '\n# okay decompyling', infile, __memUsage()
return (tot_files, okay_files, failed_files, verify_failed_files)