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view mercurial/node.py @ 32593:e4d0b2efb8b5

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hidden: remove unnecessary guard condition The "if visible" guard is now pretty pointless, because the function call it guards will do almost no work anyway when there are no visible revisions. We can also stop wrapping "visible" in a set since it just needs to be an iterable now.
author Martin von Zweigbergk <martinvonz@google.com>
date Tue, 30 May 2017 13:16:32 -0700
parents bd872f64a8ba
children af854b1b36f8
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# node.py - basic nodeid manipulation for mercurial
#
# Copyright 2005, 2006 Matt Mackall <mpm@selenic.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

import binascii

# This ugly style has a noticeable effect in manifest parsing
hex = binascii.hexlify
bin = binascii.unhexlify

nullrev = -1
nullid = b"\0" * 20
nullhex = hex(nullid)

# Phony node value to stand-in for new files in some uses of
# manifests.
newnodeid = '!' * 20
addednodeid = ('0' * 15) + 'added'
modifiednodeid = ('0' * 12) + 'modified'

wdirnodes = {newnodeid, addednodeid, modifiednodeid}

# pseudo identifiers for working directory
# (they are experimental, so don't add too many dependencies on them)
wdirrev = 0x7fffffff
wdirid = b"\xff" * 20

def short(node):
    return hex(node[:6])