pulled all dropbox v1 code, added v2. fixed authorization flow

resources/lib/dropbox/stone_base.py

@@ -0,0 +1,75 @@
+"""
+Helpers for representing Stone data types in Python.
+
+This module should be dropped into a project that requires the use of Stone. In
+the future, this could be imported from a pre-installed Python package, rather
+than being added to a project.
+"""
+
+from __future__ import absolute_import, unicode_literals
+
+try:
+    from . import stone_validators as bv
+except (SystemError, ValueError):
+    # Catch errors raised when importing a relative module when not in a package.
+    # This makes testing this file directly (outside of a package) easier.
+    import stone_validators as bv  # type: ignore
+
+_MYPY = False
+if _MYPY:
+    import typing  # noqa: F401 # pylint: disable=import-error,unused-import,useless-suppression
+
+
+class Union(object):
+    # TODO(kelkabany): Possible optimization is to remove _value if a
+    # union is composed of only symbols.
+    __slots__ = ['_tag', '_value']
+    _tagmap = {}  # type: typing.Dict[typing.Text, bv.Validator]
+
+    def __init__(self, tag, value=None):
+        # type: (typing.Text, typing.Optional[typing.Any]) -> None
+        assert tag in self._tagmap, 'Invalid tag %r.' % tag
+        validator = self._tagmap[tag]
+        if isinstance(validator, bv.Void):
+            assert value is None, 'Void type union member must have None value.'
+        elif isinstance(validator, (bv.Struct, bv.Union)):
+            validator.validate_type_only(value)
+        else:
+            validator.validate(value)
+        self._tag = tag
+        self._value = value
+
+    def __eq__(self, other):
+        # Also need to check if one class is a subclass of another. If one union extends another,
+        # the common fields should be able to be compared to each other.
+        return (
+            isinstance(other, Union) and
+            (isinstance(self, other.__class__) or isinstance(other, self.__class__)) and
+            self._tag == other._tag and self._value == other._value
+        )
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        return hash((self._tag, self._value))
+
+class Route(object):
+
+    def __init__(self, name, deprecated, arg_type, result_type, error_type, attrs):
+        self.name = name
+        self.deprecated = deprecated
+        self.arg_type = arg_type
+        self.result_type = result_type
+        self.error_type = error_type
+        assert isinstance(attrs, dict), 'Expected dict, got %r' % attrs
+        self.attrs = attrs
+
+    def __repr__(self):
+        return 'Route({!r}, {!r}, {!r}, {!r}, {!r}, {!r})'.format(
+            self.name,
+            self.deprecated,
+            self.arg_type,
+            self.result_type,
+            self.error_type,
+            self.attrs)