def isJump(opname):
if opname[:4] == 'JUMP':
return 1
python类opname()的实例源码
def test_opname(self):
self.assertEqual(dis.opname[dis.opmap["LOAD_FAST"]], "LOAD_FAST")
def flattenGraph(self):
"""Arrange the blocks in order and resolve jumps"""
assert self.stage == RAW
self.insts = insts = []
pc = 0
begin = {}
end = {}
for b in self.getBlocksInOrder():
begin[b] = pc
for inst in b.getInstructions():
insts.append(inst)
if len(inst) == 1:
pc = pc + 1
elif inst[0] != "SET_LINENO":
# arg takes 2 bytes
pc = pc + 3
end[b] = pc
pc = 0
for i in range(len(insts)):
inst = insts[i]
if len(inst) == 1:
pc = pc + 1
elif inst[0] != "SET_LINENO":
pc = pc + 3
opname = inst[0]
if opname in self.hasjrel:
oparg = inst[1]
offset = begin[oparg] - pc
insts[i] = opname, offset
elif opname in self.hasjabs:
insts[i] = opname, begin[inst[1]]
self.stage = FLAT
def convertArgs(self):
"""Convert arguments from symbolic to concrete form"""
assert self.stage == FLAT
self.consts.insert(0, self.docstring)
self.sort_cellvars()
for i in range(len(self.insts)):
t = self.insts[i]
if len(t) == 2:
opname, oparg = t
conv = self._converters.get(opname, None)
if conv:
self.insts[i] = opname, conv(self, oparg)
self.stage = CONV
def isJump(opname):
if opname[:4] == 'JUMP':
return 1
def findDepth(self, insts, debug=0):
depth = 0
maxDepth = 0
for i in insts:
opname = i[0]
if debug:
print i,
delta = self.effect.get(opname, None)
if delta is not None:
depth = depth + delta
else:
# now check patterns
for pat, pat_delta in self.patterns:
if opname[:len(pat)] == pat:
delta = pat_delta
depth = depth + delta
break
# if we still haven't found a match
if delta is None:
meth = getattr(self, opname, None)
if meth is not None:
depth = depth + meth(i[1])
if depth > maxDepth:
maxDepth = depth
if debug:
print depth, maxDepth
return maxDepth
def test_opname(self):
self.assertEqual(dis.opname[dis.opmap["LOAD_FAST"]], "LOAD_FAST")
def flattenGraph(self):
"""Arrange the blocks in order and resolve jumps"""
assert self.stage == RAW
self.insts = insts = []
pc = 0
begin = {}
end = {}
for b in self.getBlocksInOrder():
begin[b] = pc
for inst in b.getInstructions():
insts.append(inst)
if len(inst) == 1:
pc = pc + 1
elif inst[0] != "SET_LINENO":
# arg takes 2 bytes
pc = pc + 3
end[b] = pc
pc = 0
for i in range(len(insts)):
inst = insts[i]
if len(inst) == 1:
pc = pc + 1
elif inst[0] != "SET_LINENO":
pc = pc + 3
opname = inst[0]
if opname in self.hasjrel:
oparg = inst[1]
offset = begin[oparg] - pc
insts[i] = opname, offset
elif opname in self.hasjabs:
insts[i] = opname, begin[inst[1]]
self.stage = FLAT
def convertArgs(self):
"""Convert arguments from symbolic to concrete form"""
assert self.stage == FLAT
self.consts.insert(0, self.docstring)
self.sort_cellvars()
for i in range(len(self.insts)):
t = self.insts[i]
if len(t) == 2:
opname, oparg = t
conv = self._converters.get(opname, None)
if conv:
self.insts[i] = opname, conv(self, oparg)
self.stage = CONV
def findDepth(self, insts, debug=0):
depth = 0
maxDepth = 0
for i in insts:
opname = i[0]
if debug:
print i,
delta = self.effect.get(opname, None)
if delta is not None:
depth = depth + delta
else:
# now check patterns
for pat, pat_delta in self.patterns:
if opname[:len(pat)] == pat:
delta = pat_delta
depth = depth + delta
break
# if we still haven't found a match
if delta is None:
meth = getattr(self, opname, None)
if meth is not None:
depth = depth + meth(i[1])
if depth > maxDepth:
maxDepth = depth
if debug:
print depth, maxDepth
return maxDepth
def _get_base_class_names(frame):
""" Get baseclass names from the code object """
co, lasti = frame.f_code, frame.f_lasti
code = co.co_code
extends = []
for (op, oparg) in op_stream(code, lasti):
if op in dis.hasconst:
if type(co.co_consts[oparg]) == str:
extends = []
elif op in dis.hasname:
if dis.opname[op] == 'LOAD_NAME':
extends.append(('name', co.co_names[oparg]))
if dis.opname[op] == 'LOAD_ATTR':
extends.append(('attr', co.co_names[oparg]))
if dis.opname[op] == 'LOAD_GLOBAL':
extends.append(('name', co.co_names[oparg]))
items = []
previous_item = []
for t, s in extends:
if t == 'name':
if previous_item:
items.append(previous_item)
previous_item = [s]
else:
previous_item += [s]
if previous_item:
items.append(previous_item)
return items
def test_expr(expr, allowed_codes):
try:
c = compile(expr, "", "eval")
except:
raise ValueError, "%s is not a valid expression" % expr
codes, names = _get_opcodes(c)
for code in codes:
if code not in allowed_codes:
for n in names:
if n not in _load_names:
raise ValueError, "opcode %s not allowed" % dis.opname[code]
return c
def flattenGraph(self):
"""Arrange the blocks in order and resolve jumps"""
assert self.stage == RAW
self.insts = insts = []
pc = 0
begin = {}
end = {}
for b in self.getBlocksInOrder():
begin[b] = pc
for inst in b.getInstructions():
insts.append(inst)
if len(inst) == 1:
pc = pc + 1
elif inst[0] != "SET_LINENO":
# arg takes 2 bytes
pc = pc + 3
end[b] = pc
pc = 0
for i in range(len(insts)):
inst = insts[i]
if len(inst) == 1:
pc = pc + 1
elif inst[0] != "SET_LINENO":
pc = pc + 3
opname = inst[0]
if opname in self.hasjrel:
oparg = inst[1]
offset = begin[oparg] - pc
insts[i] = opname, offset
elif opname in self.hasjabs:
insts[i] = opname, begin[inst[1]]
self.stage = FLAT
def convertArgs(self):
"""Convert arguments from symbolic to concrete form"""
assert self.stage == FLAT
self.consts.insert(0, self.docstring)
self.sort_cellvars()
for i in range(len(self.insts)):
t = self.insts[i]
if len(t) == 2:
opname, oparg = t
conv = self._converters.get(opname, None)
if conv:
self.insts[i] = opname, conv(self, oparg)
self.stage = CONV
def isJump(opname):
if opname[:4] == 'JUMP':
return 1
def test_opname(self):
self.assertEqual(dis.opname[dis.opmap["LOAD_FAST"]], "LOAD_FAST")
def _block_stack_repr(self, block_stack):
"""Get a string version of `block_stack`, for debugging."""
blocks = ", ".join(
["(%s, %r)" % (dis.opname[b[0]], b[1]) for b in block_stack]
)
return "[" + blocks + "]"
def test_opname(self):
self.assertEqual(dis.opname[dis.opmap["LOAD_FAST"]], "LOAD_FAST")
def flattenGraph(self):
"""Arrange the blocks in order and resolve jumps"""
assert self.stage == RAW
self.insts = insts = []
pc = 0
begin = {}
end = {}
for b in self.getBlocksInOrder():
begin[b] = pc
for inst in b.getInstructions():
insts.append(inst)
if len(inst) == 1:
pc = pc + 1
elif inst[0] != "SET_LINENO":
# arg takes 2 bytes
pc = pc + 3
end[b] = pc
pc = 0
for i in range(len(insts)):
inst = insts[i]
if len(inst) == 1:
pc = pc + 1
elif inst[0] != "SET_LINENO":
pc = pc + 3
opname = inst[0]
if opname in self.hasjrel:
oparg = inst[1]
offset = begin[oparg] - pc
insts[i] = opname, offset
elif opname in self.hasjabs:
insts[i] = opname, begin[inst[1]]
self.stage = FLAT
def convertArgs(self):
"""Convert arguments from symbolic to concrete form"""
assert self.stage == FLAT
self.consts.insert(0, self.docstring)
self.sort_cellvars()
for i in range(len(self.insts)):
t = self.insts[i]
if len(t) == 2:
opname, oparg = t
conv = self._converters.get(opname, None)
if conv:
self.insts[i] = opname, conv(self, oparg)
self.stage = CONV
