view tests/revnamesext.py @ 51775:ca4208713875

manifest: introduce a `read_any_fast_delta` method

This method is a clearer semantic than `readbase` and `readfast` and will allow
for more accurate optimization and usage. This is part of a wider series
introducing such clearer method.

# Dummy extension to define a namespace containing revision names


from mercurial import namespaces


def reposetup(ui, repo):
    names = {b'r%d' % rev: repo[rev].node() for rev in repo}
    namemap = lambda r, name: names.get(name)
    nodemap = lambda r, node: [b'r%d' % repo[node].rev()]

    ns = namespaces.namespace(
        b'revnames',
        templatename=b'revname',
        logname=b'revname',
        listnames=lambda r: names.keys(),
        namemap=namemap,
        nodemap=nodemap,
    )
    repo.names.addnamespace(ns)