def GetCtx(ctx_type):
"""Creates Load, Store, Del, and Param, used in the ctx kwarg."""
if ctx_type == CtxEnum.LOAD:
return _ast.Load()
elif ctx_type == CtxEnum.STORE:
return _ast.Store()
elif ctx_type == CtxEnum.DEL:
return _ast.Del()
elif ctx_type == CtxEnum.PARAM:
return _ast.Param()
raise InvalidCtx('ctx_type {} isn\'t a valid type'.format(ctx_type))
def make_function(code, defaults=None, lineno=0):
from meta.decompiler.disassemble import disassemble
instructions = Instructions(disassemble(code))
stmnts = instructions.stmnt()
if code.co_flags & 2:
vararg = None
kwarg = None
varnames = list(code.co_varnames[:code.co_argcount])
co_locals = list(code.co_varnames[code.co_argcount:])
#have var args
if code.co_flags & 4:
vararg = co_locals.pop(0)
#have kw args
if code.co_flags & 8:
kwarg = co_locals.pop()
args = [_ast.Name(id=argname, ctx=_ast.Param(), lineno=lineno, col_offset=0) for argname in varnames]
args = _ast.arguments(args=args,
defaults=defaults if defaults else [],
kwarg=kwarg,
vararg=vararg,
lineno=lineno, col_offset=0
)
if code.co_name == '<lambda>':
if len(stmnts) == 2:
if isinstance(stmnts[0], _ast.If) and isinstance(stmnts[1], _ast.Return):
assert len(stmnts[0].body) == 1
assert isinstance(stmnts[0].body[0], _ast.Return)
stmnts = [_ast.Return(_ast.IfExp(stmnts[0].test, stmnts[0].body[0].value, stmnts[1].value))]
assert len(stmnts) == 1, stmnts
assert isinstance(stmnts[0], _ast.Return)
stmnt = stmnts[0].value
ast_obj = _ast.Lambda(args=args, body=stmnt, lineno=lineno, col_offset=0)
else:
if instructions.seen_yield:
return_ = stmnts[-1]
assert isinstance(return_, _ast.Return)
assert isinstance(return_.value, _ast.Name)
assert return_.value.id == 'None'
return_.value = None
ast_obj = _ast.FunctionDef(name=code.co_name, args=args, body=stmnts, decorator_list=[], lineno=lineno, col_offset=0)
return ast_obj
def visit_arguments(self, x): x.ctx=_ast.Param() # never reached! return x # WHY???