tests/printrevset.py
author Yuya Nishihara <yuya@tcha.org>
Sat, 12 Sep 2020 21:06:16 +0900
changeset 45568 c1d0f83d62c4
parent 45567 a717de1cb624
child 48966 6000f5b25c9b
permissions -rw-r--r--
log: introduce struct that carries log traversal options I tried to refactor logcmdutil.getrevs() without using an options struct, but none of these attempts didn't work out. Since every stage of getrevs() needs various log command options (e.g. both matcher and revset query need file patterns), it isn't possible to cleanly split getrevs() into a command layer and a core logic. So, this patch introduces a named struct to carry command options in slightly abstracted way, which will be later used by "hg grep" and "hg churn". More fields will be added to the walkopt struct. Type hints aren't verified. I couldn't figure out how to teach pytype to load its own attr type stubs in place of our .thirdparty.attr. Conditional import didn't work. s/^from \.thirdparty // is the only way I found pytype could parse the @attr.ib decorator.

from __future__ import absolute_import
from mercurial.thirdparty import attr
from mercurial import (
    cmdutil,
    commands,
    extensions,
    logcmdutil,
    revsetlang,
    smartset,
)

from mercurial.utils import stringutil


def logrevset(repo, wopts):
    revs = logcmdutil._initialrevs(repo, wopts)
    if not revs:
        return None
    match, pats, slowpath = logcmdutil._makematcher(repo, revs, wopts)
    wopts = attr.evolve(wopts, pats=pats)
    return logcmdutil._makerevset(repo, wopts, slowpath)


def uisetup(ui):
    def printrevset(orig, repo, wopts):
        revs, filematcher = orig(repo, wopts)
        if wopts.opts.get(b'print_revset'):
            expr = logrevset(repo, wopts)
            if expr:
                tree = revsetlang.parse(expr)
                tree = revsetlang.analyze(tree)
            else:
                tree = []
            ui = repo.ui
            ui.write(b'%s\n' % stringutil.pprint(wopts.opts.get(b'rev', [])))
            ui.write(revsetlang.prettyformat(tree) + b'\n')
            ui.write(stringutil.prettyrepr(revs) + b'\n')
            revs = smartset.baseset()  # display no revisions
        return revs, filematcher

    extensions.wrapfunction(logcmdutil, 'getrevs', printrevset)
    aliases, entry = cmdutil.findcmd(b'log', commands.table)
    entry[1].append(
        (
            b'',
            b'print-revset',
            False,
            b'print generated revset and exit (DEPRECATED)',
        )
    )