--- a/mercurial/peer.py	Wed Apr 04 10:35:09 2018 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,100 +0,0 @@
-# peer.py - repository base classes for mercurial
-#
-# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
-# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
-#
-# This software may be used and distributed according to the terms of the
-# GNU General Public License version 2 or any later version.
-
-from __future__ import absolute_import
-
-from . import (
-    error,
-    pycompat,
-    util,
-)
-
-# abstract batching support
-
-class future(object):
-    '''placeholder for a value to be set later'''
-    def set(self, value):
-        if util.safehasattr(self, 'value'):
-            raise error.RepoError("future is already set")
-        self.value = value
-
-class batcher(object):
-    '''base class for batches of commands submittable in a single request
-
-    All methods invoked on instances of this class are simply queued and
-    return a a future for the result. Once you call submit(), all the queued
-    calls are performed and the results set in their respective futures.
-    '''
-    def __init__(self):
-        self.calls = []
-    def __getattr__(self, name):
-        def call(*args, **opts):
-            resref = future()
-            # Please don't invent non-ascii method names, or you will
-            # give core hg a very sad time.
-            self.calls.append((name.encode('ascii'), args, opts, resref,))
-            return resref
-        return call
-    def submit(self):
-        raise NotImplementedError()
-
-class iterbatcher(batcher):
-
-    def submit(self):
-        raise NotImplementedError()
-
-    def results(self):
-        raise NotImplementedError()
-
-class localiterbatcher(iterbatcher):
-    def __init__(self, local):
-        super(iterbatcher, self).__init__()
-        self.local = local
-
-    def submit(self):
-        # submit for a local iter batcher is a noop
-        pass
-
-    def results(self):
-        for name, args, opts, resref in self.calls:
-            resref.set(getattr(self.local, name)(*args, **opts))
-            yield resref.value
-
-def batchable(f):
-    '''annotation for batchable methods
-
-    Such methods must implement a coroutine as follows:
-
-    @batchable
-    def sample(self, one, two=None):
-        # Build list of encoded arguments suitable for your wire protocol:
-        encargs = [('one', encode(one),), ('two', encode(two),)]
-        # Create future for injection of encoded result:
-        encresref = future()
-        # Return encoded arguments and future:
-        yield encargs, encresref
-        # Assuming the future to be filled with the result from the batched
-        # request now. Decode it:
-        yield decode(encresref.value)
-
-    The decorator returns a function which wraps this coroutine as a plain
-    method, but adds the original method as an attribute called "batchable",
-    which is used by remotebatch to split the call into separate encoding and
-    decoding phases.
-    '''
-    def plain(*args, **opts):
-        batchable = f(*args, **opts)
-        encargsorres, encresref = next(batchable)
-        if not encresref:
-            return encargsorres # a local result in this case
-        self = args[0]
-        cmd = pycompat.bytesurl(f.__name__)  # ensure cmd is ascii bytestr
-        encresref.set(self._submitone(cmd, encargsorres))
-        return next(batchable)
-    setattr(plain, 'batchable', f)
-    return plain