Python new.code方法代碼示例

# 需要導入模塊: import new [as 別名]
# 或者: from new import code [as 別名]
def python(self, argv):
        import code
        ns = self._get_ns()
        console = code.InteractiveConsole(ns)
        console.raw_input = self._ui.user_input
        try:
            saveps1, saveps2 = sys.ps1, sys.ps2
        except AttributeError:
            saveps1, saveps2 = ">>> ", "... "
        sys.ps1, sys.ps2 = "%%GPython%%N:%s> " % (self._obj.__class__.__name__,), "more> "
        if readline:
            oc = readline.get_completer()
            readline.set_completer(Completer(ns).complete)
        console.interact("You are now in Python. ^D exits.")
        if readline:
            readline.set_completer(oc)
        sys.ps1, sys.ps2 = saveps1, saveps2
        self._reset_scopes()


# This is needed to reset PagedIO so background events don't cause the pager to activate. 

# 需要導入模塊: import new [as 別名]
# 或者: from new import code [as 別名]
def python(self, argv):
        import code
        ns = self._get_ns()
        console = code.InteractiveConsole(ns)
        console.raw_input = self._ui.user_input
        try:
            saveps1, saveps2 = sys.ps1, sys.ps2
        except AttributeError:
            saveps1, saveps2 = ">>> ", "... "
        sys.ps1, sys.ps2 = "%%GPython%%N:%s> " % (self._obj.__class__.__name__,), "more> "
        if readline:
            oc = readline.get_completer()
            readline.set_completer(Completer(ns).complete)
        console.interact("You are now in Python. ^D exits.")
        if readline:
            readline.set_completer(oc)
        sys.ps1, sys.ps2 = saveps1, saveps2
        self._reset_scopes() 

# 需要導入模塊: import new [as 別名]
# 或者: from new import code [as 別名]
def calc_lnotab(self):
        '''
        Creates a new co_lineno after modifying bytecode
        '''
        rvalue = ""

        prev_lineno = self.code.co_firstlineno
        prev_offset = self.head.addr

        for current in self.nodes():
            if current.co_lnotab == prev_lineno:
                continue

            new_offset = current.co_lnotab - prev_lineno
            new_offset = 0xff if new_offset > 0xff else new_offset

            rvalue += struct.pack("BB", current.addr - prev_offset,
                                  (current.co_lnotab - prev_lineno) & 0xff)

            prev_lineno = current.co_lnotab
            prev_offset = current.addr
        return rvalue 

# 需要導入模塊: import new [as 別名]
# 或者: from new import code [as 別名]
def nextBlock(self, block=None):
        # XXX think we need to specify when there is implicit transfer
        # from one block to the next.  might be better to represent this
        # with explicit JUMP_ABSOLUTE instructions that are optimized
        # out when they are unnecessary.
        #
        # I think this strategy works: each block has a child
        # designated as "next" which is returned as the last of the
        # children.  because the nodes in a graph are emitted in
        # reverse post order, the "next" block will always be emitted
        # immediately after its parent.
        # Worry: maintaining this invariant could be tricky
        if block is None:
            block = self.newBlock()

        # Note: If the current block ends with an unconditional
        # control transfer, then it is incorrect to add an implicit
        # transfer to the block graph.  The current code requires
        # these edges to get the blocks emitted in the right order,
        # however. :-(  If a client needs to remove these edges, call
        # pruneEdges().

        self.current.addNext(block)
        self.startBlock(block) 

# 需要導入模塊: import new [as 別名]
# 或者: from new import code [as 別名]
def pruneNext(self):
        """Remove bogus edge for unconditional transfers

        Each block has a next edge that accounts for implicit control
        transfers, e.g. from a JUMP_IF_FALSE to the block that will be
        executed if the test is true.

        These edges must remain for the current assembler code to
        work. If they are removed, the dfs_postorder gets things in
        weird orders.  However, they shouldn't be there for other
        purposes, e.g. conversion to SSA form.  This method will
        remove the next edge when it follows an unconditional control
        transfer.
        """
        try:
            op, arg = self.insts[-1]
        except (IndexError, ValueError):
            return
        if op in self._uncond_transfer:
            self.next = [] 

# 需要導入模塊: import new [as 別名]
# 或者: from new import code [as 別名]
def extract_code_globals(co):
        """
        Find all globals names read or written to by codeblock co
        """
        code = co.co_code
        names = co.co_names
        out_names = set()

        n = len(code)
        i = 0
        extended_arg = 0
        while i < n:
            op = code[i]

            i = i+1
            if op >= HAVE_ARGUMENT:
                oparg = ord(code[i]) + ord(code[i+1])*256 + extended_arg
                extended_arg = 0
                i = i+2
                if op == EXTENDED_ARG:
                    extended_arg = oparg*65536L
                if op in GLOBAL_OPS:
                    out_names.add(names[oparg])
        #print 'extracted', out_names, ' from ', names
        return out_names 

# 需要導入模塊: import new [as 別名]
# 或者: from new import code [as 別名]
def _make_skel_func(code, num_closures, base_globals = None):
    """ Creates a skeleton function object that contains just the provided
        code and the correct number of cells in func_closure.  All other
        func attributes (e.g. func_globals) are empty.
    """
    #build closure (cells):
    if not ctypes:
        raise Exception('ctypes failed to import; cannot build function')

    cellnew = ctypes.pythonapi.PyCell_New
    cellnew.restype = ctypes.py_object
    cellnew.argtypes = (ctypes.py_object,)
    dummy_closure = tuple(map(lambda i: cellnew(None), range(num_closures)))

    if base_globals is None:
        base_globals = {}
    base_globals['__builtins__'] = __builtins__

    return types.FunctionType(code, base_globals,
                              None, None, dummy_closure)

# this piece of opaque code is needed below to modify 'cell' contents 

# 需要導入模塊: import new [as 別名]
# 或者: from new import code [as 別名]
def debug(self, argv):
        """debug ["on"|"off"]
    Enables debugging for CLI code. 
    Enters the debugger if an exception occurs."""
        global _DEBUG
        if len(argv) > 1:
            cmd = argv[1]
            if cmd == "on":
                _DEBUG = True
            else:
                _DEBUG = False
        else:
            self._ui.printf(
                 "Debugging is currently %%I%s%%N." % (IF(_DEBUG, "on", "off"),)) 

# 需要導入模塊: import new [as 別名]
# 或者: from new import code [as 別名]
def alias(self, argv):
        """alias [newalias]
    With no argument prints the current set of aliases. With an argument of the
    form alias ..., sets a new alias.  """
        if len(argv) == 1:
            for name, val in self._aliases.items():
                self._print("alias %s='%s'" % (name, " ".join(val)))
            return 0
        elif len(argv) == 2 and '=' not in argv[1]:
            name = argv[1]
            try:
                self._print("%s=%s" % (name, " ".join(self._aliases[name])))
            except KeyError:
                self._print("undefined alias.")
            return 0
        # else
        try: # this icky code to handle different permutations of where the '=' is.
            argv.pop(0) # discard 'alias'
            name = argv.pop(0)
            if "=" in name:
                name, rh = name.split("=", 1)
                argv.insert(0,rh)
            elif argv[0].startswith("="):
                if len(argv[0]) > 1: # if argv[1] is '=something'
                    argv[0] = argv[0][1:]
                else:
                    del argv[0] # remove the '='
            self._aliases[name] = argv
        except:
            ex, val = sys.exc_info()[:2]
            self._print("alias: Could not set alias. Usage: alias name=value")
            self._print("%s (%s)" % (ex, val))
            return 1 

# 需要導入模塊: import new [as 別名]
# 或者: from new import code [as 別名]
def pyeval(self, argv):
        snippet = " ".join(argv[1:]).strip()+"\n"
        ns = self._get_ns()
        try:
            code = compile(snippet, '<CLI>', 'eval')
            rv = eval(code, globals(), ns)
        except:
            t, v, tb = sys.exc_info()
            self._print('*** %s (%s)' % (t, v))
        else:
            self._print(rv)
            return rv 

# 需要導入模塊: import new [as 別名]
# 或者: from new import code [as 別名]
def pyexec(self, argv):
        snippet = " ".join(argv[1:]).strip()+"\n"
        ns = self._get_ns()
        try:
            code = compile(snippet, '<CLI>', 'exec')
            exec code in globals(), ns
        except:
            t, v, tb = sys.exc_info()
            self._print('*** %s (%s)' % (t, v)) 

# 需要導入模塊: import new [as 別名]
# 或者: from new import code [as 別名]
def debug(self, argv):
        """debug ["on"|"off"]
    Enables debugging for CLI code.
    Enters the debugger if an exception occurs."""
        global _DEBUG
        if len(argv) > 1:
            cmd = argv[1]
            if cmd == "on":
                _DEBUG = True
            else:
                _DEBUG = False
        else:
            self._ui.printf(
                 "Debugging is currently %%I%s%%N." % ("on" if _DEBUG else "off",)) 

# 需要導入模塊: import new [as 別名]
# 或者: from new import code [as 別名]
def pyexec(self, argv):
        snippet = " ".join(argv[1:]).strip()+"\n"
        ns = self._get_ns()
        try:
            code = compile(snippet, '<CLI>', 'exec')
            exec(code, globals(), ns)
        except:
            t, v, tb = sys.exc_info()
            self._print('*** %s (%s)' % (t, v)) 

# 需要導入模塊: import new [as 別名]
# 或者: from new import code [as 別名]
def read(self, f):
        if isinstance(f, basestring):
            f = open(f, "rb")
        self.magic = f.read(4)
        self.modtime = f.read(4)
        self.code = marshal.load(f) 

# 需要導入模塊: import new [as 別名]
# 或者: from new import code [as 別名]
def write(self, f):
        if isinstance(f, basestring):
            f = open(f, "wb")
        f.write(self.magic)
        f.write(self.modtime)
        marshal.dump(self.code, f)