Add google-endpoints to third_party/.

third_party/google-endpoints/future/types/newlist.py

Index: third_party/google-endpoints/future/types/newlist.py
diff --git a/third_party/google-endpoints/future/types/newlist.py b/third_party/google-endpoints/future/types/newlist.py
new file mode 100644
index 0000000000000000000000000000000000000000..74d8f6cebed39c1e4f060d32b7b3077be908f2fb
--- /dev/null
+++ b/third_party/google-endpoints/future/types/newlist.py
@@ -0,0 +1,95 @@
+"""
+A list subclass for Python 2 that behaves like Python 3's list.
+
+The primary difference is that lists have a .copy() method in Py3.
+
+Example use:
+
+>>> from builtins import list
+>>> l1 = list()    # instead of {} for an empty list
+>>> l1.append('hello')
+>>> l2 = l1.copy()
+
+"""
+
+import sys
+import copy
+
+from future.utils import with_metaclass
+from future.types.newobject import newobject
+
+
+_builtin_list = list
+ver = sys.version_info[:2]
+
+
+class BaseNewList(type):
+    def __instancecheck__(cls, instance):
+        if cls == newlist:
+            return isinstance(instance, _builtin_list)
+        else:
+            return issubclass(instance.__class__, cls)
+
+
+class newlist(with_metaclass(BaseNewList, _builtin_list)):
+    """
+    A backport of the Python 3 list object to Py2
+    """
+    def copy(self):
+        """
+        L.copy() -> list -- a shallow copy of L
+        """
+        return copy.copy(self)
+
+    def clear(self):
+        """L.clear() -> None -- remove all items from L"""
+        for i in range(len(self)):
+            self.pop()
+
+    def __new__(cls, *args, **kwargs):
+        """
+        list() -> new empty list
+        list(iterable) -> new list initialized from iterable's items
+        """
+
+        if len(args) == 0:
+            return super(newlist, cls).__new__(cls)
+        elif type(args[0]) == newlist:
+            value = args[0]
+        else:
+            value = args[0]
+        return super(newlist, cls).__new__(cls, value)
+
+    def __add__(self, value):
+        return newlist(super(newlist, self).__add__(value))
+
+    def __radd__(self, left):
+        " left + self "
+        try:
+            return newlist(left) + self
+        except:
+            return NotImplemented
+
+    def __getitem__(self, y):
+        """
+        x.__getitem__(y) <==> x[y]
+
+        Warning: a bug in Python 2.x prevents indexing via a slice from
+        returning a newlist object.
+        """
+        if isinstance(y, slice):
+            return newlist(super(newlist, self).__getitem__(y))
+        else:
+            return super(newlist, self).__getitem__(y)
+
+    def __native__(self):
+        """
+        Hook for the future.utils.native() function
+        """
+        return list(self)
+
+    def __nonzero__(self):
+        return len(self) > 0
+
+
+__all__ = ['newlist']