Пример #1
0
 def visit_Tuple(self, tup):
     """Try to turn tuple building into a constant."""
     if tup.ctx != ast.Load:
         return tup  # Don't do the rest for assignment or delete targets.
         # It would replace Tuple([]) with Constant('()')!
     if tup.elts:
         consts_w = [None] * len(tup.elts)
         for i in range(len(tup.elts)):
             node = tup.elts[i]
             w_const = node.as_constant(self.space, self.compile_info)
             if w_const is None:
                 new_elts = self._optimize_constant_star_unpacks(tup.elts)
                 if new_elts is not None:
                     return ast.Tuple(new_elts, ast.Load, tup.lineno,
                                      tup.col_offset)
                 return tup
             consts_w[i] = w_const
         # intern the string constants packed into the tuple here,
         # because assemble.py will see the result as just a tuple constant
         for i in range(len(consts_w)):
             consts_w[i] = misc.intern_if_common_string(
                 self.space, consts_w[i])
     else:
         consts_w = []
     w_consts = self.space.newtuple(consts_w)
     return ast.Constant(w_consts, tup.lineno, tup.col_offset)
Пример #2
0
 def visit_Tuple(self, tup):
     """Try to turn tuple building into a constant."""
     if tup.elts:
         consts_w = [None]*len(tup.elts)
         for i in range(len(tup.elts)):
             node = tup.elts[i]
             w_const = node.as_constant()
             if w_const is None:
                 return tup
             consts_w[i] = w_const
         # intern the string constants packed into the tuple here,
         # because assemble.py will see the result as just a tuple constant
         for i in range(len(consts_w)):
             consts_w[i] = misc.intern_if_common_string(
                 self.space, consts_w[i])
     else:
         consts_w = []
     w_consts = self.space.newtuple(consts_w)
     return ast.Const(w_consts, tup.lineno, tup.col_offset)
Пример #3
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 def _build_consts_array(self):
     """Turn the applevel constants dictionary into a list."""
     w_consts = self.w_consts
     space = self.space
     consts_w = [space.w_None] * space.len_w(w_consts)
     w_iter = space.iter(w_consts)
     first = space.wrap(0)
     while True:
         try:
             w_key = space.next(w_iter)
         except OperationError as e:
             if not e.match(space, space.w_StopIteration):
                 raise
             break
         w_index = space.getitem(w_consts, w_key)
         w_constant = space.getitem(w_key, first)
         w_constant = misc.intern_if_common_string(space, w_constant)
         consts_w[space.int_w(w_index)] = w_constant
     return consts_w
Пример #4
0
 def _build_consts_array(self):
     """Turn the applevel constants dictionary into a list."""
     w_consts = self.w_consts
     space = self.space
     consts_w = [space.w_None] * space.len_w(w_consts)
     w_iter = space.iter(w_consts)
     first = space.wrap(0)
     while True:
         try:
             w_key = space.next(w_iter)
         except OperationError as e:
             if not e.match(space, space.w_StopIteration):
                 raise
             break
         w_index = space.getitem(w_consts, w_key)
         w_constant = space.getitem(w_key, first)
         w_constant = misc.intern_if_common_string(space, w_constant)
         consts_w[space.int_w(w_index)] = w_constant
     return consts_w
Пример #5
0
 def visit_Tuple(self, tup):
     """Try to turn tuple building into a constant."""
     if tup.elts:
         consts_w = [None]*len(tup.elts)
         for i in range(len(tup.elts)):
             node = tup.elts[i]
             w_const = node.as_constant()
             if w_const is None:
                 return tup
             consts_w[i] = w_const
         # intern the string constants packed into the tuple here,
         # because assemble.py will see the result as just a tuple constant
         for i in range(len(consts_w)):
             consts_w[i] = misc.intern_if_common_string(
                 self.space, consts_w[i])
     else:
         consts_w = []
     w_consts = self.space.newtuple(consts_w)
     return ast.Const(w_consts, tup.lineno, tup.col_offset)
Пример #6
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    def add_const(self, w_obj):
        """Add a W_Root to the constant array and return its location."""
        space = self.space
        if isinstance(w_obj, PyCode):
            # unlike CPython, never share code objects, it's pointless
            w_key = space.id(w_obj)
        else:
            w_key = PyCode.const_comparison_key(self.space, w_obj)

        w_len = space.finditem(self.w_consts, w_key)
        if w_len is not None:
            length = space.int_w(w_len)
        else:
            length = len(self.consts_w)
            w_obj = misc.intern_if_common_string(space, w_obj)
            self.consts_w.append(w_obj)
            space.setitem(self.w_consts, w_key, space.newint(length))
        if length == 0:
            self.scope.doc_removable = False
        return length