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Start to DRY opcode code. Limited support for decopyling Python 3.5

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rocky
2016-01-02 22:59:02 -05:00
parent bc2a36b9f7
commit 31ebe88b38
15 changed files with 708 additions and 546 deletions
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2
uncompyle6/opcodes/opcode_23.py
View File

@@ -7,6 +7,8 @@ This is a superset of Python 2.3's opcode.py with some opcodes that simplify
parsing and semantic interpretation.
"""
# FIXME: DRY this along the lines of opcode_3x.
cmp_op = ('<', '<=', '==', '!=', '>', '>=', 'in', 'not in', 'is',
'is not', 'exception match', 'BAD')

2
uncompyle6/opcodes/opcode_25.py
View File

@@ -7,6 +7,8 @@ This is a superset of Python 2.5's opcode.py with some opcodes that simplify
parsing and semantic interpretation.
"""
# FIXME: DRY this along the lines of opcode_3x.
cmp_op = ('<', '<=', '==', '!=', '>', '>=', 'in', 'not in', 'is',
'is not', 'exception match', 'BAD')

2
uncompyle6/opcodes/opcode_26.py
View File

@@ -7,6 +7,8 @@ This is a superset of Python 3.4's opcode.py with some opcodes that simplify
parsing and semantic interpretation.
"""
# FIXME: DRY this along the lines of opcode_3x.
cmp_op = ('<', '<=', '==', '!=', '>', '>=', 'in', 'not in', 'is',
'is not', 'exception match', 'BAD')

2
uncompyle6/opcodes/opcode_27.py
View File

@@ -7,6 +7,8 @@ This is a superset of Python 3.4's opcode.py with some opcodes that simplify
parsing and semantic interpretation.
"""
# FIXME: DRY this along the lines of opcode_3x.
cmp_op = ('<', '<=', '==', '!=', '>', '>=', 'in', 'not in', 'is',
'is not', 'exception match', 'BAD')

200
uncompyle6/opcodes/opcode_32.py
View File

@@ -3,42 +3,27 @@ CPython 3.2 bytecode opcodes
This is used in scanner (bytecode disassembly) and parser (Python grammar).
This is a superset of Python 3.4's opcode.py with some opcodes that simplify
This is a superset of Python 3.2's opcode.py with some opcodes that simplify
parsing and semantic interpretation.
"""
cmp_op = ('<', '<=', '==', '!=', '>', '>=', 'in', 'not in', 'is',
'is not', 'exception match', 'BAD')
from copy import deepcopy
hasconst = []
hasname = []
hasjrel = []
hasjabs = []
haslocal = []
hascompare = []
hasfree = []
hasnargs = []
import uncompyle6.opcodes.opcode_3x as opcode_3x
from uncompyle6.opcodes.opcode_3x import fields2copy
# FIXME: can we DRY this even more?
opmap = {}
opname = [''] * 256
for op in range(256): opname[op] = '<%r>' % (op,)
del op
hasjrel = []
hasjabs = []
def def_op(name, op):
opname[op] = name
opmap[name] = op
for object in fields2copy:
globals()[object] = deepcopy(getattr(opcode_3x, object))
def name_op(name, op):
def_op(name, op)
hasname.append(op)
def jrel_op(name, op):
def_op(name, op)
hasjrel.append(op)
def jabs_op(name, op):
def_op(name, op)
hasjabs.append(op)
# There are no opcodes to add or change.
# If there were, they'd be listed below.
def updateGlobal():
# JUMP_OPs are used in verification are set in the scanner
@@ -50,165 +35,14 @@ def updateGlobal():
globals().update(dict([(k.replace('+', '_'), v) for (k, v) in opmap.items()]))
globals().update({'JUMP_OPs': map(lambda op: opname[op], hasjrel + hasjabs)})
# Instruction opcodes for compiled code
# Blank lines correspond to available opcodes
def_op('STOP_CODE', 0)
def_op('POP_TOP', 1)
def_op('ROT_TWO', 2)
def_op('ROT_THREE', 3)
def_op('DUP_TOP', 4)
def_op('DUP_TOP_TWO', 5)
def_op('NOP', 9)
def_op('UNARY_POSITIVE', 10)
def_op('UNARY_NEGATIVE', 11)
def_op('UNARY_NOT', 12)
def_op('UNARY_INVERT', 15)
def_op('BINARY_POWER', 19)
def_op('BINARY_MULTIPLY', 20)
def_op('BINARY_MODULO', 22)
def_op('BINARY_ADD', 23)
def_op('BINARY_SUBTRACT', 24)
def_op('BINARY_SUBSCR', 25)
def_op('BINARY_FLOOR_DIVIDE', 26)
def_op('BINARY_TRUE_DIVIDE', 27)
def_op('INPLACE_FLOOR_DIVIDE', 28)
def_op('INPLACE_TRUE_DIVIDE', 29)
# Gone from Python 3 are Python2's
# SLICE+0 .. SLICE+3
# STORE_SLICE+0 .. STORE_SLICE+3
# DELETE_SLICE+0 .. DELETE_SLICE+3
def_op('STORE_MAP', 54)
def_op('INPLACE_ADD', 55)
def_op('INPLACE_SUBTRACT', 56)
def_op('INPLACE_MULTIPLY', 57)
def_op('INPLACE_MODULO', 59)
def_op('STORE_SUBSCR', 60)
def_op('DELETE_SUBSCR', 61)
def_op('BINARY_LSHIFT', 62)
def_op('BINARY_RSHIFT', 63)
def_op('BINARY_AND', 64)
def_op('BINARY_XOR', 65)
def_op('BINARY_OR', 66)
def_op('INPLACE_POWER', 67)
def_op('GET_ITER', 68)
def_op('STORE_LOCALS', 69)
def_op('PRINT_EXPR', 70)
def_op('LOAD_BUILD_CLASS', 71)
# Python3 drops/changes:
# def_op('PRINT_ITEM', 71)
# def_op('PRINT_NEWLINE', 72)
# def_op('PRINT_ITEM_TO', 73)
# def_op('PRINT_NEWLINE_TO', 74)
def_op('INPLACE_LSHIFT', 75)
def_op('INPLACE_RSHIFT', 76)
def_op('INPLACE_AND', 77)
def_op('INPLACE_XOR', 78)
def_op('INPLACE_OR', 79)
def_op('BREAK_LOOP', 80)
def_op('WITH_CLEANUP', 81)
def_op('RETURN_VALUE', 83)
def_op('IMPORT_STAR', 84)
def_op('YIELD_VALUE', 86)
def_op('POP_BLOCK', 87)
def_op('END_FINALLY', 88)
def_op('POP_EXCEPT', 89)
HAVE_ARGUMENT = 90 # Opcodes from here have an argument:
name_op('STORE_NAME', 90) # Index in name list
name_op('DELETE_NAME', 91) # ""
def_op('UNPACK_SEQUENCE', 92) # Number of tuple items
jrel_op('FOR_ITER', 93)
def_op('UNPACK_EX', 94)
name_op('STORE_ATTR', 95) # Index in name list
name_op('DELETE_ATTR', 96) # ""
name_op('STORE_GLOBAL', 97) # ""
name_op('DELETE_GLOBAL', 98) # ""
# Python 2's DUP_TOPX is gone
def_op('LOAD_CONST', 100) # Index in const list
hasconst.append(100)
name_op('LOAD_NAME', 101) # Index in name list
def_op('BUILD_TUPLE', 102) # Number of tuple items
def_op('BUILD_LIST', 103) # Number of list items
def_op('BUILD_SET', 104) # Number of set items
def_op('BUILD_MAP', 105) # Number of dict entries (upto 255)
name_op('LOAD_ATTR', 106) # Index in name list
def_op('COMPARE_OP', 107) # Comparison operator
hascompare.append(107)
name_op('IMPORT_NAME', 108) # Index in name list
name_op('IMPORT_FROM', 109) # Index in name list
jrel_op('JUMP_FORWARD', 110) # Number of bytes to skip
jabs_op('JUMP_IF_FALSE_OR_POP', 111) # Target byte offset from beginning of code
jabs_op('JUMP_IF_TRUE_OR_POP', 112) # ""
jabs_op('JUMP_ABSOLUTE', 113) # ""
jabs_op('POP_JUMP_IF_FALSE', 114) # ""
jabs_op('POP_JUMP_IF_TRUE', 115) # ""
name_op('LOAD_GLOBAL', 116) # Index in name list
jabs_op('CONTINUE_LOOP', 119) # Target address
jrel_op('SETUP_LOOP', 120) # Distance to target address
jrel_op('SETUP_EXCEPT', 121) # ""
jrel_op('SETUP_FINALLY', 122) # ""
def_op('LOAD_FAST', 124) # Local variable number
haslocal.append(124)
def_op('STORE_FAST', 125) # Local variable number
haslocal.append(125)
def_op('DELETE_FAST', 126) # Local variable number
haslocal.append(126)
def_op('RAISE_VARARGS', 130) # Number of raise arguments (1, 2, or 3)
def_op('CALL_FUNCTION', 131) # #args + (#kwargs << 8)
hasnargs.append(131)
def_op('MAKE_FUNCTION', 132) # Number of args with default values
def_op('BUILD_SLICE', 133) # Number of items
def_op('MAKE_CLOSURE', 134)
def_op('LOAD_CLOSURE', 135)
hasfree.append(135)
def_op('LOAD_DEREF', 136)
hasfree.append(136)
def_op('STORE_DEREF', 137)
hasfree.append(137)
def_op('DELETE_DEREF', 138)
hasfree.append(138)
def_op('CALL_FUNCTION_VAR', 140) # #args + (#kwargs << 8)
hasnargs.append(140)
def_op('CALL_FUNCTION_KW', 141) # #args + (#kwargs << 8)
hasnargs.append(141)
def_op('CALL_FUNCTION_VAR_KW', 142) # #args + (#kwargs << 8)
hasnargs.append(142)
jrel_op('SETUP_WITH', 143)
def_op('LIST_APPEND', 145)
def_op('SET_ADD', 146)
def_op('MAP_ADD', 147)
def_op('EXTENDED_ARG', 144)
EXTENDED_ARG = 144
updateGlobal()
del def_op, name_op, jrel_op, jabs_op
from uncompyle6 import PYTHON_VERSION
if PYTHON_VERSION == 3.2:
import dis
# for item in dis.opmap.items():
# if item not in opmap.items():
# print(item)
assert all(item in opmap.items() for item in dis.opmap.items())
# opcode_3x.dump_opcodes(opmap)

185
uncompyle6/opcodes/opcode_33.py
View File

@@ -7,37 +7,31 @@ This is a superset of Python 3.3's opcode.py with some opcodes that simplify
parsing and semantic interpretation.
"""
cmp_op = ('<', '<=', '==', '!=', '>', '>=', 'in', 'not in', 'is',
'is not', 'exception match', 'BAD')
from copy import deepcopy
hasconst = []
hasname = []
hasjrel = []
hasjabs = []
haslocal = []
hascompare = []
hasfree = []
import uncompyle6.opcodes.opcode_3x as opcode_3x
from uncompyle6.opcodes.opcode_3x import fields2copy, rm_op
# FIXME: can we DRY this even more?
opmap = {}
opname = [''] * 256
for op in range(256): opname[op] = '<%r>' % (op,)
del op
hasconst = []
hasjrel = []
hasjabs = []
def def_op(name, op):
opname[op] = name
opmap[name] = op
def name_op(name, op):
def_op(name, op)
hasname.append(op)
for object in fields2copy:
globals()[object] = deepcopy(getattr(opcode_3x, object))
def jrel_op(name, op):
def_op(name, op)
hasjrel.append(op)
# Below are opcodes since Python 3.2
def jabs_op(name, op):
def_op(name, op)
hasjabs.append(op)
rm_op(opname, opmap, 'STOP_CODE', 0)
def_op('YIELD_FROM', 72)
def updateGlobal():
# JUMP_OPs are used in verification are set in the scanner
@@ -49,156 +43,9 @@ def updateGlobal():
globals().update(dict([(k.replace('+', '_'), v) for (k, v) in opmap.items()]))
globals().update({'JUMP_OPs': map(lambda op: opname[op], hasjrel + hasjabs)})
# Instruction opcodes for compiled code
# Blank lines correspond to available opcodes
def_op('STOP_CODE', 0)
def_op('POP_TOP', 1)
def_op('ROT_TWO', 2)
def_op('ROT_THREE', 3)
def_op('DUP_TOP', 4)
def_op('DUP_TOP_TWO', 5)
def_op('NOP', 9)
def_op('UNARY_POSITIVE', 10)
def_op('UNARY_NEGATIVE', 11)
def_op('UNARY_NOT', 12)
def_op('UNARY_INVERT', 15)
def_op('BINARY_POWER', 19)
def_op('BINARY_MULTIPLY', 20)
def_op('BINARY_MODULO', 22)
def_op('BINARY_ADD', 23)
def_op('BINARY_SUBTRACT', 24)
def_op('BINARY_SUBSCR', 25)
def_op('BINARY_FLOOR_DIVIDE', 26)
def_op('BINARY_TRUE_DIVIDE', 27)
def_op('INPLACE_FLOOR_DIVIDE', 28)
def_op('INPLACE_TRUE_DIVIDE', 29)
# Gone from Python 3 are
# Python 2's SLICE+0 .. SLICE+3
def_op('STORE_MAP', 54)
def_op('INPLACE_ADD', 55)
def_op('INPLACE_SUBTRACT', 56)
def_op('INPLACE_MULTIPLY', 57)
def_op('INPLACE_MODULO', 59)
def_op('STORE_SUBSCR', 60)
def_op('DELETE_SUBSCR', 61)
def_op('BINARY_LSHIFT', 62)
def_op('BINARY_RSHIFT', 63)
def_op('BINARY_AND', 64)
def_op('BINARY_XOR', 65)
def_op('BINARY_OR', 66)
def_op('INPLACE_POWER', 67)
def_op('GET_ITER', 68)
def_op('STORE_LOCALS', 69)
def_op('PRINT_EXPR', 70)
def_op('LOAD_BUILD_CLASS', 71)
# Python3 drops/changes:
# def_op('PRINT_ITEM', 71)
# def_op('PRINT_NEWLINE', 72)
def_op('YIELD_FROM', 72)
# def_op('PRINT_ITEM_TO', 73)
# def_op('PRINT_NEWLINE_TO', 74)
def_op('INPLACE_LSHIFT', 75)
def_op('INPLACE_RSHIFT', 76)
def_op('INPLACE_AND', 77)
def_op('INPLACE_XOR', 78)
def_op('INPLACE_OR', 79)
def_op('BREAK_LOOP', 80)
def_op('WITH_CLEANUP', 81)
def_op('RETURN_VALUE', 83)
def_op('IMPORT_STAR', 84)
def_op('YIELD_VALUE', 86)
def_op('POP_BLOCK', 87)
def_op('END_FINALLY', 88)
def_op('POP_EXCEPT', 89)
HAVE_ARGUMENT = 90 # Opcodes from here have an argument:
name_op('STORE_NAME', 90) # Index in name list
name_op('DELETE_NAME', 91) # ""
def_op('UNPACK_SEQUENCE', 92) # Number of tuple items
jrel_op('FOR_ITER', 93)
def_op('UNPACK_EX', 94)
name_op('STORE_ATTR', 95) # Index in name list
name_op('DELETE_ATTR', 96) # ""
name_op('STORE_GLOBAL', 97) # ""
name_op('DELETE_GLOBAL', 98) # ""
def_op('LOAD_CONST', 100) # Index in const list
hasconst.append(100)
name_op('LOAD_NAME', 101) # Index in name list
def_op('BUILD_TUPLE', 102) # Number of tuple items
def_op('BUILD_LIST', 103) # Number of list items
def_op('BUILD_SET', 104) # Number of set items
def_op('BUILD_MAP', 105) # Number of dict entries (upto 255)
name_op('LOAD_ATTR', 106) # Index in name list
def_op('COMPARE_OP', 107) # Comparison operator
hascompare.append(107)
name_op('IMPORT_NAME', 108) # Index in name list
name_op('IMPORT_FROM', 109) # Index in name list
jrel_op('JUMP_FORWARD', 110) # Number of bytes to skip
jabs_op('JUMP_IF_FALSE_OR_POP', 111) # Target byte offset from beginning of code
jabs_op('JUMP_IF_TRUE_OR_POP', 112) # ""
jabs_op('JUMP_ABSOLUTE', 113) # ""
jabs_op('POP_JUMP_IF_FALSE', 114) # ""
jabs_op('POP_JUMP_IF_TRUE', 115) # ""
name_op('LOAD_GLOBAL', 116) # Index in name list
jabs_op('CONTINUE_LOOP', 119) # Target address
jrel_op('SETUP_LOOP', 120) # Distance to target address
jrel_op('SETUP_EXCEPT', 121) # ""
jrel_op('SETUP_FINALLY', 122) # ""
def_op('LOAD_FAST', 124) # Local variable number
haslocal.append(124)
def_op('STORE_FAST', 125) # Local variable number
haslocal.append(125)
def_op('DELETE_FAST', 126) # Local variable number
haslocal.append(126)
def_op('RAISE_VARARGS', 130) # Number of raise arguments (1, 2, or 3)
def_op('CALL_FUNCTION', 131) # #args + (#kwargs << 8)
def_op('MAKE_FUNCTION', 132) # Number of args with default values
def_op('BUILD_SLICE', 133) # Number of items
def_op('MAKE_CLOSURE', 134)
def_op('LOAD_CLOSURE', 135)
hasfree.append(135)
def_op('LOAD_DEREF', 136)
hasfree.append(136)
def_op('STORE_DEREF', 137)
hasfree.append(137)
def_op('DELETE_DEREF', 138)
hasfree.append(138)
def_op('CALL_FUNCTION_VAR', 140) # #args + (#kwargs << 8)
def_op('CALL_FUNCTION_KW', 141) # #args + (#kwargs << 8)
def_op('CALL_FUNCTION_VAR_KW', 142) # #args + (#kwargs << 8)
jrel_op('SETUP_WITH', 143)
def_op('LIST_APPEND', 145)
def_op('SET_ADD', 146)
def_op('MAP_ADD', 147)
def_op('EXTENDED_ARG', 144)
EXTENDED_ARG = 144
updateGlobal()
del def_op, name_op, jrel_op, jabs_op
# FIXME: turn into pytest test
from uncompyle6 import PYTHON_VERSION
if PYTHON_VERSION == 3.3:
import dis
@@ -206,3 +53,5 @@ if PYTHON_VERSION == 3.3:
# if item not in opmap.items():
# print(item)
assert all(item in opmap.items() for item in dis.opmap.items())
# opcode3x.dump_opcodes(opmap)

209
uncompyle6/opcodes/opcode_34.py
View File

@@ -1,44 +1,41 @@
"""
CPython 3.4 bytecode opcodes
This is used in scanner (bytecode disassembly) and parser (Python grammar).
used in scanner (bytecode disassembly) and parser (Python grammar)
This is a superset of Python 3.4's opcode.py with some opcodes that simplify
parsing and semantic interpretation.
"""
cmp_op = ('<', '<=', '==', '!=', '>', '>=', 'in', 'not in', 'is',
'is not', 'exception match', 'BAD')
from copy import deepcopy
hasconst = []
hasname = []
hasjrel = []
hasjabs = []
haslocal = []
hascompare = []
hasfree = []
hasnargs = []
import uncompyle6.opcodes.opcode_3x as opcode_3x
from uncompyle6.opcodes.opcode_3x import fields2copy, hasfree, rm_op
# FIXME: can we DRY this even more?
opmap = {}
opname = [''] * 256
for op in range(256): opname[op] = '<%r>' % (op,)
del op
hasconst = []
hasjrel = []
hasjabs = []
def def_op(name, op):
opname[op] = name
opmap[name] = op
def name_op(name, op):
def_op(name, op)
hasname.append(op)
for object in fields2copy:
globals()[object] = deepcopy(getattr(opcode_3x, object))
def jrel_op(name, op):
def_op(name, op)
hasjrel.append(op)
# Below are opcodes changes since Python 3.2
def jabs_op(name, op):
def_op(name, op)
hasjabs.append(op)
rm_op(opname, opmap, 'STOP_CODE', 0)
rm_op(opname, opmap, 'STORE_LOCALS', 69)
# These are new since Python 3.3
def_op('YIELD_FROM', 72)
def_op('LOAD_CLASSDEREF', 148)
hasfree.append(148)
def updateGlobal():
# JUMP_OPs are used in verification are set in the scanner
@@ -50,171 +47,15 @@ def updateGlobal():
globals().update(dict([(k.replace('+', '_'), v) for (k, v) in opmap.items()]))
globals().update({'JUMP_OPs': map(lambda op: opname[op], hasjrel + hasjabs)})
# Instruction opcodes for compiled code
# Blank lines correspond to available opcodes
def_op('STOP_CODE', 0)
def_op('POP_TOP', 1)
def_op('ROT_TWO', 2)
def_op('ROT_THREE', 3)
def_op('DUP_TOP', 4)
def_op('DUP_TOP_TWO', 5)
def_op('NOP', 9)
def_op('UNARY_POSITIVE', 10)
def_op('UNARY_NEGATIVE', 11)
def_op('UNARY_NOT', 12)
def_op('UNARY_INVERT', 15)
def_op('BINARY_POWER', 19)
def_op('BINARY_MULTIPLY', 20)
def_op('BINARY_MODULO', 22)
def_op('BINARY_ADD', 23)
def_op('BINARY_SUBTRACT', 24)
def_op('BINARY_SUBSCR', 25)
def_op('BINARY_FLOOR_DIVIDE', 26)
def_op('BINARY_TRUE_DIVIDE', 27)
def_op('INPLACE_FLOOR_DIVIDE', 28)
def_op('INPLACE_TRUE_DIVIDE', 29)
# Gone from Python 3 are Python2's
# SLICE+0 .. SLICE+3
# STORE_SLICE+0 .. STORE_SLICE+3
# DELETE_SLICE+0 .. DELETE_SLICE+3
def_op('STORE_MAP', 54)
def_op('INPLACE_ADD', 55)
def_op('INPLACE_SUBTRACT', 56)
def_op('INPLACE_MULTIPLY', 57)
def_op('INPLACE_MODULO', 59)
def_op('STORE_SUBSCR', 60)
def_op('DELETE_SUBSCR', 61)
def_op('BINARY_LSHIFT', 62)
def_op('BINARY_RSHIFT', 63)
def_op('BINARY_AND', 64)
def_op('BINARY_XOR', 65)
def_op('BINARY_OR', 66)
def_op('INPLACE_POWER', 67)
def_op('GET_ITER', 68)
# FIXME: no code generates this
def_op('STORE_LOCALS', 69)
def_op('PRINT_EXPR', 70)
def_op('LOAD_BUILD_CLASS', 71)
def_op('YIELD_FROM', 72)
# Python3 drops/changes:
# def_op('PRINT_ITEM', 71)
# def_op('PRINT_NEWLINE', 72)
# def_op('PRINT_ITEM_TO', 73)
# def_op('PRINT_NEWLINE_TO', 74)
def_op('INPLACE_LSHIFT', 75)
def_op('INPLACE_RSHIFT', 76)
def_op('INPLACE_AND', 77)
def_op('INPLACE_XOR', 78)
def_op('INPLACE_OR', 79)
def_op('BREAK_LOOP', 80)
def_op('WITH_CLEANUP', 81)
def_op('RETURN_VALUE', 83)
def_op('IMPORT_STAR', 84)
def_op('YIELD_VALUE', 86)
def_op('POP_BLOCK', 87)
def_op('END_FINALLY', 88)
def_op('POP_EXCEPT', 89)
HAVE_ARGUMENT = 90 # Opcodes from here have an argument:
name_op('STORE_NAME', 90) # Index in name list
name_op('DELETE_NAME', 91) # ""
def_op('UNPACK_SEQUENCE', 92) # Number of tuple items
jrel_op('FOR_ITER', 93)
def_op('UNPACK_EX', 94)
name_op('STORE_ATTR', 95) # Index in name list
name_op('DELETE_ATTR', 96) # ""
name_op('STORE_GLOBAL', 97) # ""
name_op('DELETE_GLOBAL', 98) # ""
# Python 2's DUP_TOPX is gone
def_op('LOAD_CONST', 100) # Index in const list
hasconst.append(100)
name_op('LOAD_NAME', 101) # Index in name list
def_op('BUILD_TUPLE', 102) # Number of tuple items
def_op('BUILD_LIST', 103) # Number of list items
def_op('BUILD_SET', 104) # Number of set items
def_op('BUILD_MAP', 105) # Number of dict entries (upto 255)
name_op('LOAD_ATTR', 106) # Index in name list
def_op('COMPARE_OP', 107) # Comparison operator
hascompare.append(107)
name_op('IMPORT_NAME', 108) # Index in name list
name_op('IMPORT_FROM', 109) # Index in name list
jrel_op('JUMP_FORWARD', 110) # Number of bytes to skip
jabs_op('JUMP_IF_FALSE_OR_POP', 111) # Target byte offset from beginning of code
jabs_op('JUMP_IF_TRUE_OR_POP', 112) # ""
jabs_op('JUMP_ABSOLUTE', 113) # ""
jabs_op('POP_JUMP_IF_FALSE', 114) # ""
jabs_op('POP_JUMP_IF_TRUE', 115) # ""
name_op('LOAD_GLOBAL', 116) # Index in name list
jabs_op('CONTINUE_LOOP', 119) # Target address
jrel_op('SETUP_LOOP', 120) # Distance to target address
jrel_op('SETUP_EXCEPT', 121) # ""
jrel_op('SETUP_FINALLY', 122) # ""
def_op('LOAD_FAST', 124) # Local variable number
haslocal.append(124)
def_op('STORE_FAST', 125) # Local variable number
haslocal.append(125)
def_op('DELETE_FAST', 126) # Local variable number
haslocal.append(126)
def_op('RAISE_VARARGS', 130) # Number of raise arguments (1, 2, or 3)
def_op('CALL_FUNCTION', 131) # #args + (#kwargs << 8)
hasnargs.append(131)
def_op('MAKE_FUNCTION', 132) # Number of args with default values
def_op('BUILD_SLICE', 133) # Number of items
def_op('MAKE_CLOSURE', 134)
def_op('LOAD_CLOSURE', 135)
hasfree.append(135)
def_op('LOAD_DEREF', 136)
hasfree.append(136)
def_op('STORE_DEREF', 137)
hasfree.append(137)
def_op('DELETE_DEREF', 138)
hasfree.append(138)
def_op('CALL_FUNCTION_VAR', 140) # #args + (#kwargs << 8)
hasnargs.append(140)
def_op('CALL_FUNCTION_KW', 141) # #args + (#kwargs << 8)
hasnargs.append(141)
def_op('CALL_FUNCTION_VAR_KW', 142) # #args + (#kwargs << 8)
hasnargs.append(142)
jrel_op('SETUP_WITH', 143)
def_op('LIST_APPEND', 145)
def_op('SET_ADD', 146)
def_op('MAP_ADD', 147)
def_op('LOAD_CLASSDEREF', 148)
hasfree.append(148)
def_op('EXTENDED_ARG', 144)
EXTENDED_ARG = 144
updateGlobal()
del def_op, name_op, jrel_op, jabs_op
# FIXME: turn into pytest test
from uncompyle6 import PYTHON_VERSION
if PYTHON_VERSION == 3.4:
import dis
# for item in dis.opmap.items():
# if item not in opmap.items():
# print(item)
assert all(item in opmap.items() for item in dis.opmap.items())
# opcode_3x.dump_opcodes(opmap)

81
uncompyle6/opcodes/opcode_35.py Normal file
View File

@@ -0,0 +1,81 @@
# (C) Copyright 2016 by Rocky Bernstein
"""
CPython 3.5 bytecode opcodes
used in scanner (bytecode disassembly) and parser (Python grammar)
This is a superset of Python 3.5's opcode.py with some opcodes that simplify
parsing and semantic interpretation.
"""
from copy import deepcopy
import uncompyle6.opcodes.opcode_3x as opcode_3x
from uncompyle6.opcodes.opcode_3x import fields2copy, hasfree, rm_op
# FIXME: can we DRY this even more?
opmap = {}
opname = [''] * 256
hasconst = []
hasjrel = []
hasjabs = []
def def_op(name, op):
opname[op] = name
opmap[name] = op
for object in fields2copy:
globals()[object] = deepcopy(getattr(opcode_3x, object))
# Below are opcodes changes since Python 3.2
rm_op(opname, opmap, 'STOP_CODE', 0)
rm_op(opname, opmap, 'STORE_LOCALS', 69)
# These are new since Python 3.3
def_op('YIELD_FROM', 72)
def_op('LOAD_CLASSDEREF', 148)
# These are new since Python 3.4
def_op('BINARY_MATRIX_MULTIPLY', 16)
def_op('INPLACE_MATRIX_MULTIPLY', 17)
def_op('GET_AITER', 50)
def_op('GET_ANEXT', 51)
def_op('BEFORE_ASYNC_WITH', 52)
def_op('GET_YIELD_FROM_ITER', 69)
def_op('GET_AWAITABLE', 73)
def_op('WITH_CLEANUP_START', 81)
def_op('WITH_CLEANUP_FINISH', 82)
def_op('BUILD_LIST_UNPACK', 149)
def_op('BUILD_MAP_UNPACK', 150)
def_op('BUILD_MAP_UNPACK_WITH_CALL', 151)
def_op('BUILD_TUPLE_UNPACK', 152)
def_op('BUILD_SET_UNPACK', 153)
def_op('SETUP_ASYNC_WITH', 154)
hasfree.append(148)
def updateGlobal():
# JUMP_OPs are used in verification are set in the scanner
# and used in the parser grammar
globals().update({'PJIF': opmap['POP_JUMP_IF_FALSE']})
globals().update({'PJIT': opmap['POP_JUMP_IF_TRUE']})
globals().update({'JA': opmap['JUMP_ABSOLUTE']})
globals().update({'JF': opmap['JUMP_FORWARD']})
globals().update(dict([(k.replace('+', '_'), v) for (k, v) in opmap.items()]))
globals().update({'JUMP_OPs': map(lambda op: opname[op], hasjrel + hasjabs)})
updateGlobal()
# FIXME: turn into pytest test
from uncompyle6 import PYTHON_VERSION
if PYTHON_VERSION == 3.5:
import dis
for item in dis.opmap.items():
if item not in opmap.items():
print(item)
assert all(item in opmap.items() for item in dis.opmap.items())
# opcode_3x.dump_opcodes(opmap)

210
uncompyle6/opcodes/opcode_3x.py Normal file
View File

@@ -0,0 +1,210 @@
"""
CPython 3.2 bytecode opcodes to be used as a base for other opcodes including 3.2.
If this file changes the other opcode files may have to a adjusted accordingly.
"""
cmp_op = ('<', '<=', '==', '!=', '>', '>=', 'in', 'not in', 'is',
'is not', 'exception match', 'BAD')
hasconst = []
hasname = []
hasjrel = []
hasjabs = []
haslocal = []
hascompare = []
hasfree = []
hasnargs = []
opmap = {}
opname = [''] * 256
for op in range(256): opname[op] = '<%r>' % (op,)
del op
def def_op(name, op):
opname[op] = name
opmap[name] = op
def name_op(name, op):
def_op(name, op)
hasname.append(op)
def jrel_op(name, op):
def_op(name, op)
hasjrel.append(op)
def jabs_op(name, op):
def_op(name, op)
hasjabs.append(op)
# Instruction opcodes for compiled code
# Blank lines correspond to available opcodes
def_op('STOP_CODE', 0)
def_op('POP_TOP', 1)
def_op('ROT_TWO', 2)
def_op('ROT_THREE', 3)
def_op('DUP_TOP', 4)
def_op('DUP_TOP_TWO', 5)
def_op('NOP', 9)
def_op('UNARY_POSITIVE', 10)
def_op('UNARY_NEGATIVE', 11)
def_op('UNARY_NOT', 12)
def_op('UNARY_INVERT', 15)
def_op('BINARY_POWER', 19)
def_op('BINARY_MULTIPLY', 20)
def_op('BINARY_MODULO', 22)
def_op('BINARY_ADD', 23)
def_op('BINARY_SUBTRACT', 24)
def_op('BINARY_SUBSCR', 25)
def_op('BINARY_FLOOR_DIVIDE', 26)
def_op('BINARY_TRUE_DIVIDE', 27)
def_op('INPLACE_FLOOR_DIVIDE', 28)
def_op('INPLACE_TRUE_DIVIDE', 29)
# Gone from Python 3 are Python2's
# SLICE+0 .. SLICE+3
# STORE_SLICE+0 .. STORE_SLICE+3
# DELETE_SLICE+0 .. DELETE_SLICE+3
def_op('STORE_MAP', 54)
def_op('INPLACE_ADD', 55)
def_op('INPLACE_SUBTRACT', 56)
def_op('INPLACE_MULTIPLY', 57)
def_op('INPLACE_MODULO', 59)
def_op('STORE_SUBSCR', 60)
def_op('DELETE_SUBSCR', 61)
def_op('BINARY_LSHIFT', 62)
def_op('BINARY_RSHIFT', 63)
def_op('BINARY_AND', 64)
def_op('BINARY_XOR', 65)
def_op('BINARY_OR', 66)
def_op('INPLACE_POWER', 67)
def_op('GET_ITER', 68)
def_op('STORE_LOCALS', 69)
def_op('PRINT_EXPR', 70)
def_op('LOAD_BUILD_CLASS', 71)
# Python3 drops/changes:
# def_op('PRINT_ITEM', 71)
# def_op('PRINT_NEWLINE', 72)
# def_op('PRINT_ITEM_TO', 73)
# def_op('PRINT_NEWLINE_TO', 74)
def_op('INPLACE_LSHIFT', 75)
def_op('INPLACE_RSHIFT', 76)
def_op('INPLACE_AND', 77)
def_op('INPLACE_XOR', 78)
def_op('INPLACE_OR', 79)
def_op('BREAK_LOOP', 80)
def_op('WITH_CLEANUP', 81)
def_op('RETURN_VALUE', 83)
def_op('IMPORT_STAR', 84)
def_op('YIELD_VALUE', 86)
def_op('POP_BLOCK', 87)
def_op('END_FINALLY', 88)
def_op('POP_EXCEPT', 89)
HAVE_ARGUMENT = 90 # Opcodes from here have an argument:
name_op('STORE_NAME', 90) # Index in name list
name_op('DELETE_NAME', 91) # ""
def_op('UNPACK_SEQUENCE', 92) # Number of tuple items
jrel_op('FOR_ITER', 93)
def_op('UNPACK_EX', 94)
name_op('STORE_ATTR', 95) # Index in name list
name_op('DELETE_ATTR', 96) # ""
name_op('STORE_GLOBAL', 97) # ""
name_op('DELETE_GLOBAL', 98) # ""
# Python 2's DUP_TOPX is gone
def_op('LOAD_CONST', 100) # Index in const list
hasconst.append(100)
name_op('LOAD_NAME', 101) # Index in name list
def_op('BUILD_TUPLE', 102) # Number of tuple items
def_op('BUILD_LIST', 103) # Number of list items
def_op('BUILD_SET', 104) # Number of set items
def_op('BUILD_MAP', 105) # Number of dict entries (upto 255)
name_op('LOAD_ATTR', 106) # Index in name list
def_op('COMPARE_OP', 107) # Comparison operator
hascompare.append(107)
name_op('IMPORT_NAME', 108) # Index in name list
name_op('IMPORT_FROM', 109) # Index in name list
jrel_op('JUMP_FORWARD', 110) # Number of bytes to skip
jabs_op('JUMP_IF_FALSE_OR_POP', 111) # Target byte offset from beginning of code
jabs_op('JUMP_IF_TRUE_OR_POP', 112) # ""
jabs_op('JUMP_ABSOLUTE', 113) # ""
jabs_op('POP_JUMP_IF_FALSE', 114) # ""
jabs_op('POP_JUMP_IF_TRUE', 115) # ""
name_op('LOAD_GLOBAL', 116) # Index in name list
jabs_op('CONTINUE_LOOP', 119) # Target address
jrel_op('SETUP_LOOP', 120) # Distance to target address
jrel_op('SETUP_EXCEPT', 121) # ""
jrel_op('SETUP_FINALLY', 122) # ""
def_op('LOAD_FAST', 124) # Local variable number
haslocal.append(124)
def_op('STORE_FAST', 125) # Local variable number
haslocal.append(125)
def_op('DELETE_FAST', 126) # Local variable number
haslocal.append(126)
def_op('RAISE_VARARGS', 130) # Number of raise arguments (1, 2, or 3)
def_op('CALL_FUNCTION', 131) # #args + (#kwargs << 8)
hasnargs.append(131)
def_op('MAKE_FUNCTION', 132) # Number of args with default values
def_op('BUILD_SLICE', 133) # Number of items
def_op('MAKE_CLOSURE', 134)
def_op('LOAD_CLOSURE', 135)
hasfree.append(135)
def_op('LOAD_DEREF', 136)
hasfree.append(136)
def_op('STORE_DEREF', 137)
hasfree.append(137)
def_op('DELETE_DEREF', 138)
hasfree.append(138)
def_op('CALL_FUNCTION_VAR', 140) # #args + (#kwargs << 8)
hasnargs.append(140)
def_op('CALL_FUNCTION_KW', 141) # #args + (#kwargs << 8)
hasnargs.append(141)
def_op('CALL_FUNCTION_VAR_KW', 142) # #args + (#kwargs << 8)
hasnargs.append(142)
jrel_op('SETUP_WITH', 143)
def_op('LIST_APPEND', 145)
def_op('SET_ADD', 146)
def_op('MAP_ADD', 147)
def_op('EXTENDED_ARG', 144)
EXTENDED_ARG = 144
fields2copy = """cmp_op hasconst hasname hasjrel hasjabs haslocal hascompare hasfree hasnargs
opmap opname HAVE_ARGUMENT EXTENDED_ARG""".split()
def rm_op(opname, opmap, name, op):
# opname is an array, so we need to keep the position in there.
opname[op] = ''
assert opmap[name] == op
del opmap[name]
def dump_opcodes(opmap):
"""Utility for dumping opcodes"""
op2name = {}
for k in opmap.keys():
op2name[opmap[k]] = k
for i in sorted(op2name.keys()):
print("%-3s %s" % (str(i), op2name[i]))

8
uncompyle6/parser.py
View File

@@ -1,7 +1,7 @@
# Copyright (c) 1999 John Aycock
# Copyright (c) 2000-2002 by hartmut Goebel <h.goebel@crazy-compilers.com>
# Copyright (c) 2015-2016 Rocky Bernstein
# Copyright (c) 2005 by Dan Pascu <dan@windowmaker.org>
# Copyright (c) 2015 Rocky Bernstein
# Copyright (c) 2000-2002 by hartmut Goebel <h.goebel@crazy-compilers.com>
# Copyright (c) 1999 John Aycock
"""
Common spark parser routines Python.
"""
@@ -105,7 +105,7 @@ def python_parser(version, co, out=sys.stdout, showasm=False,
if __name__ == '__main__':
def parse_test(co):
from uncompyl6e import PYTHON_VERSION
from uncompyl6 import PYTHON_VERSION
ast = python_parser(PYTHON_VERSION, co, showasm=True)
print(ast)
return

8
uncompyle6/scanner.py
View File

@@ -29,7 +29,8 @@ if PYTHON3:
else:
L65536 = long(65536) # NOQA
from uncompyle6.opcodes import opcode_25, opcode_26, opcode_27, opcode_32, opcode_33, opcode_34
from uncompyle6.opcodes import (opcode_25, opcode_26, opcode_27,
opcode_32, opcode_33, opcode_34, opcode_35)
class Code:
@@ -61,6 +62,8 @@ class Scanner(object):
self.opc = opcode_33
elif version == 3.4:
self.opc = opcode_34
elif version == 3.5:
self.opc = opcode_35
else:
raise TypeError("%s is not a Python version I know about" % version)
@@ -305,6 +308,9 @@ def get_scanner(version):
elif version == 3.4:
import uncompyle6.scanners.scanner34 as scan
scanner = scan.Scanner34(version)
elif version == 3.5:
import uncompyle6.scanners.scanner35 as scan
scanner = scan.Scanner35(version)
else:
raise RuntimeError("Unsupported Python version %d" % version)
return scanner

4
uncompyle6/scanners/scanner32.py
View File

@@ -1,4 +1,4 @@
# Copyright (c) 2015 by Rocky Bernstein
# Copyright (c) 2015-2016 by Rocky Bernstein
"""
Python 3.2 bytecode scanner/deparser
@@ -23,7 +23,7 @@ class Scanner32(scan3.Scanner3):
if __name__ == "__main__":
import inspect
co = inspect.currentframe().f_code
tokens, customize = Scanner32().disassemble(co)
tokens, customize = Scanner32(3.2).disassemble(co)
for t in tokens:
print(t)
pass

4
uncompyle6/scanners/scanner33.py
View File

@@ -1,4 +1,4 @@
# Copyright (c) 2015 by Rocky Bernstein
# Copyright (c) 2015-2016 by Rocky Bernstein
"""
Python 3 bytecode scanner/deparser
@@ -23,7 +23,7 @@ class Scanner33(scan3.Scanner3):
if __name__ == "__main__":
import inspect
co = inspect.currentframe().f_code
tokens, customize = Scanner33().disassemble(co)
tokens, customize = Scanner33(3.3).disassemble(co)
for t in tokens:
print(t)
pass

4
uncompyle6/scanners/scanner34.py
View File

@@ -1,4 +1,4 @@
# Copyright (c) 2015 by Rocky Bernstein
# Copyright (c) 2015-2016 by Rocky Bernstein
"""
Python 3.4 bytecode scanner/deparser
@@ -327,7 +327,7 @@ class Scanner34(scan3.Scanner3):
if __name__ == "__main__":
co = inspect.currentframe().f_code
tokens, customize = Scanner34().disassemble(co)
tokens, customize = Scanner34(3.4).disassemble(co)
for t in tokens:
print(t)
pass

333
uncompyle6/scanners/scanner35.py Normal file
View File

@@ -0,0 +1,333 @@
# Copyright (c) 2016 by Rocky Bernstein
"""
Python 3.5 bytecode scanner/deparser
This overlaps Python's 3.5's dis module, and in fact in some cases
we just fall back to that. But the intent is that it can be run from
Python 2 and other versions of Python. Also, we save token information
for later use in deparsing.
"""
from __future__ import print_function
import dis, inspect
from array import array
import uncompyle6.scanners.scanner3 as scan3
from uncompyle6 import PYTHON_VERSION
from uncompyle6.code import iscode
from uncompyle6.scanner import Token
# Get all the opcodes into globals
globals().update(dis.opmap)
import uncompyle6.opcodes.opcode_35
# verify uses JUMP_OPs from here
JUMP_OPs = uncompyle6.opcodes.opcode_35.JUMP_OPs
from uncompyle6.opcodes.opcode_35 import *
class Scanner35(scan3.Scanner3):
def disassemble(self, co, classname=None, code_objects={}):
fn = self.disassemble_built_in if PYTHON_VERSION == 3.4 \
else self.disassemble_generic
return fn(co, classname, code_objects=code_objects)
def disassemble_built_in(self, co, classname=None,
code_objects={}):
# Container for tokens
tokens = []
customize = {}
self.code = array('B', co.co_code)
self.build_lines_data(co)
self.build_prev_op()
# Get jump targets
# Format: {target offset: [jump offsets]}
jump_targets = self.find_jump_targets()
bytecode = dis.Bytecode(co)
# self.lines contains (block,addrLastInstr)
if classname:
classname = '_' + classname.lstrip('_') + '__'
def unmangle(name):
if name.startswith(classname) and name[-2:] != '__':
return name[len(classname) - 2:]
return name
# free = [ unmangle(name) for name in (co.co_cellvars + co.co_freevars) ]
# names = [ unmangle(name) for name in co.co_names ]
# varnames = [ unmangle(name) for name in co.co_varnames ]
else:
# free = co.co_cellvars + co.co_freevars
# names = co.co_names
# varnames = co.co_varnames
pass
# Scan for assertions. Later we will
# turn 'LOAD_GLOBAL' to 'LOAD_ASSERT' for those
# assertions
self.load_asserts = set()
bs = list(bytecode)
n = len(bs)
for i in range(n):
inst = bs[i]
if inst.opname == 'POP_JUMP_IF_TRUE' and i+1 < n:
next_inst = bs[i+1]
if (next_inst.opname == 'LOAD_GLOBAL' and
next_inst.argval == 'AssertionError'):
self.load_asserts.add(next_inst.offset)
for inst in bytecode:
if inst.offset in jump_targets:
jump_idx = 0
for jump_offset in jump_targets[inst.offset]:
tokens.append(Token('COME_FROM', None, repr(jump_offset),
offset='%s_%s' % (inst.offset, jump_idx)))
jump_idx += 1
pass
pass
pattr = inst.argrepr
opname = inst.opname
if opname in ['LOAD_CONST']:
const = inst.argval
if iscode(const):
if const.co_name == '<lambda>':
opname = 'LOAD_LAMBDA'
elif const.co_name == '<genexpr>':
opname = 'LOAD_GENEXPR'
elif const.co_name == '<dictcomp>':
opname = 'LOAD_DICTCOMP'
elif const.co_name == '<setcomp>':
opname = 'LOAD_SETCOMP'
elif const.co_name == '<listcomp>':
opname = 'LOAD_LISTCOMP'
# verify() uses 'pattr' for comparison, since 'attr'
# now holds Code(const) and thus can not be used
# for comparison (todo: think about changing this)
# pattr = 'code_object @ 0x%x %s->%s' %\
# (id(const), const.co_filename, const.co_name)
pattr = '<code_object ' + const.co_name + '>'
else:
pattr = const
pass
elif opname in ('BUILD_LIST', 'BUILD_TUPLE', 'BUILD_SET', 'BUILD_SLICE',
'UNPACK_SEQUENCE',
'MAKE_FUNCTION', 'MAKE_CLOSURE',
'DUP_TOPX', 'RAISE_VARARGS'
):
# if opname == 'BUILD_TUPLE' and \
# self.code[self.prev[offset]] == LOAD_CLOSURE:
# continue
# else:
# op_name = '%s_%d' % (op_name, oparg)
# if opname != BUILD_SLICE:
# customize[op_name] = oparg
opname = '%s_%d' % (opname, inst.argval)
if inst.opname != 'BUILD_SLICE':
customize[opname] = inst.argval
elif opname == 'JUMP_ABSOLUTE':
pattr = inst.argval
target = self.get_target(inst.offset)
if target < inst.offset:
if (inst.offset in self.stmts and
self.code[inst.offset+3] not in (END_FINALLY, POP_BLOCK)
and offset not in self.not_continue):
opname = 'CONTINUE'
else:
opname = 'JUMP_BACK'
elif inst.offset in self.load_asserts:
opname = 'LOAD_ASSERT'
tokens.append(
Token(
type_ = opname,
attr = inst.argval,
pattr = pattr,
offset = inst.offset,
linestart = inst.starts_line,
)
)
pass
return tokens, {}
# FIXME: merge with scanner3 code
def detect_structure(self, offset):
"""
Detect structures and their boundaries to fix optimizied jumps
in python2.3+
"""
code = self.code
op = code[offset]
# Detect parent structure
parent = self.structs[0]
start = parent['start']
end = parent['end']
# Pick inner-most parent for our offset
for struct in self.structs:
curent_start = struct['start']
curent_end = struct['end']
if (curent_start <= offset < curent_end) and (curent_start >= start and curent_end <= end):
start = curent_start
end = curent_end
parent = struct
pass
if op in (POP_JUMP_IF_FALSE, POP_JUMP_IF_TRUE):
start = offset + self.op_size(op)
target = self.get_target(offset)
rtarget = self.restrict_to_parent(target, parent)
prev_op = self.prev_op
# Do not let jump to go out of parent struct bounds
if target != rtarget and parent['type'] == 'and/or':
self.fixed_jumps[offset] = rtarget
return
# Does this jump to right after another cond jump?
# If so, it's part of a larger conditional
if (code[prev_op[target]] in (JUMP_IF_FALSE_OR_POP, JUMP_IF_TRUE_OR_POP,
POP_JUMP_IF_FALSE, POP_JUMP_IF_TRUE)) and (target > offset):
self.fixed_jumps[offset] = prev_op[target]
self.structs.append({'type': 'and/or',
'start': start,
'end': prev_op[target]})
return
# Is it an and inside if block
if op == POP_JUMP_IF_FALSE:
# Search for other POP_JUMP_IF_FALSE targetting the same op,
# in current statement, starting from current offset, and filter
# everything inside inner 'or' jumps and midline ifs
match = self.rem_or(start, self.next_stmt[offset], POP_JUMP_IF_FALSE, target)
match = self.remove_mid_line_ifs(match)
# If we still have any offsets in set, start working on it
if match:
if (code[prev_op[rtarget]] in (JUMP_FORWARD, JUMP_ABSOLUTE) and prev_op[rtarget] not in self.stmts and
self.restrict_to_parent(self.get_target(prev_op[rtarget]), parent) == rtarget):
if (code[prev_op[prev_op[rtarget]]] == JUMP_ABSOLUTE and self.remove_mid_line_ifs([offset]) and
target == self.get_target(prev_op[prev_op[rtarget]]) and
(prev_op[prev_op[rtarget]] not in self.stmts or self.get_target(prev_op[prev_op[rtarget]]) > prev_op[prev_op[rtarget]]) and
1 == len(self.remove_mid_line_ifs(self.rem_or(start, prev_op[prev_op[rtarget]], (POP_JUMP_IF_FALSE, POP_JUMP_IF_TRUE), target)))):
pass
elif (code[prev_op[prev_op[rtarget]]] == RETURN_VALUE and self.remove_mid_line_ifs([offset]) and
1 == (len(set(self.remove_mid_line_ifs(self.rem_or(start, prev_op[prev_op[rtarget]],
(POP_JUMP_IF_FALSE, POP_JUMP_IF_TRUE), target))) |
set(self.remove_mid_line_ifs(self.rem_or(start, prev_op[prev_op[rtarget]],
(POP_JUMP_IF_FALSE, POP_JUMP_IF_TRUE, JUMP_ABSOLUTE),
prev_op[rtarget], True)))))):
pass
else:
fix = None
jump_ifs = self.all_instr(start, self.next_stmt[offset], POP_JUMP_IF_FALSE)
last_jump_good = True
for j in jump_ifs:
if target == self.get_target(j):
if self.lines[j].next == j + 3 and last_jump_good:
fix = j
break
else:
last_jump_good = False
self.fixed_jumps[offset] = fix or match[-1]
return
else:
self.fixed_jumps[offset] = match[-1]
return
# op == POP_JUMP_IF_TRUE
else:
next = self.next_stmt[offset]
if prev_op[next] == offset:
pass
elif code[next] in (JUMP_FORWARD, JUMP_ABSOLUTE) and target == self.get_target(next):
if code[prev_op[next]] == POP_JUMP_IF_FALSE:
if code[next] == JUMP_FORWARD or target != rtarget or code[prev_op[prev_op[rtarget]]] not in (JUMP_ABSOLUTE, RETURN_VALUE):
self.fixed_jumps[offset] = prev_op[next]
return
elif (code[next] == JUMP_ABSOLUTE and code[target] in (JUMP_ABSOLUTE, JUMP_FORWARD) and
self.get_target(target) == self.get_target(next)):
self.fixed_jumps[offset] = prev_op[next]
return
# Don't add a struct for a while test, it's already taken care of
if offset in self.ignore_if:
return
if (code[prev_op[rtarget]] == JUMP_ABSOLUTE and prev_op[rtarget] in self.stmts and
prev_op[rtarget] != offset and prev_op[prev_op[rtarget]] != offset and
not (code[rtarget] == JUMP_ABSOLUTE and code[rtarget+3] == POP_BLOCK and code[prev_op[prev_op[rtarget]]] != JUMP_ABSOLUTE)):
rtarget = prev_op[rtarget]
# Does the if jump just beyond a jump op, then this is probably an if statement
if code[prev_op[rtarget]] in (JUMP_ABSOLUTE, JUMP_FORWARD):
if_end = self.get_target(prev_op[rtarget])
# Is this a loop not an if?
if (if_end < prev_op[rtarget]) and (code[prev_op[if_end]] == SETUP_LOOP):
if(if_end > start):
return
end = self.restrict_to_parent(if_end, parent)
self.structs.append({'type': 'if-then',
'start': start,
'end': prev_op[rtarget]})
self.not_continue.add(prev_op[rtarget])
if rtarget < end:
self.structs.append({'type': 'if-else',
'start': rtarget,
'end': end})
elif code[prev_op[rtarget]] == RETURN_VALUE:
self.structs.append({'type': 'if-then',
'start': start,
'end': rtarget})
self.return_end_ifs.add(prev_op[rtarget])
elif op in (JUMP_IF_FALSE_OR_POP, JUMP_IF_TRUE_OR_POP):
target = self.get_target(offset)
if target > offset:
unop_target = self.last_instr(offset, target, JUMP_FORWARD, target)
if unop_target and code[unop_target+3] != ROT_TWO:
self.fixed_jumps[offset] = unop_target
else:
self.fixed_jumps[offset] = self.restrict_to_parent(target, parent)
def next_except_jump(self, start):
"""
Return the next jump that was generated by an except SomeException:
construct in a try...except...else clause or None if not found.
"""
if self.code[start] == DUP_TOP:
except_match = self.first_instr(start, len(self.code), POP_JUMP_IF_FALSE)
if except_match:
jmp = self.prev_op[self.get_target(except_match)]
self.ignore_if.add(except_match)
self.not_continue.add(jmp)
return jmp
count_END_FINALLY = 0
count_SETUP_ = 0
for i in self.op_range(start, len(self.code)):
op = self.code[i]
if op == END_FINALLY:
if count_END_FINALLY == count_SETUP_:
assert self.code[self.prev_op[i]] in (JUMP_ABSOLUTE, JUMP_FORWARD, RETURN_VALUE)
self.not_continue.add(self.prev_op[i])
return self.prev_op[i]
count_END_FINALLY += 1
elif op in (SETUP_EXCEPT, SETUP_WITH, SETUP_FINALLY):
count_SETUP_ += 1
if __name__ == "__main__":
co = inspect.currentframe().f_code
tokens, customize = Scanner35(3.5).disassemble(co)
for t in tokens:
print(t)
pass