comparison mercurial/tagmerge.py @ 43076:2372284d9457

formatting: blacken the codebase

This is using my patch to black
(https://github.com/psf/black/pull/826) so we don't un-wrap collection
literals.

Done with:

  hg files 'set:**.py - mercurial/thirdparty/** - "contrib/python-zstandard/**"' | xargs black -S

# skip-blame mass-reformatting only

# no-check-commit reformats foo_bar functions

Differential Revision: https://phab.mercurial-scm.org/D6971

43075:57875cf423c9

from .i18n import _
from .node import (
    hex,
    nullid,
)
from .import (
    tags as tagsmod,
    util,
)

hexnullid = hex(nullid)

def readtagsformerge(ui, repo, lines, fn='', keeplinenums=False):
    '''read the .hgtags file into a structure that is suitable for merging

    Depending on the keeplinenums flag, clear the line numbers associated
    with each tag. This is done because only the line numbers of the first
    parent are useful for merging.
    '''
    filetags = tagsmod._readtaghist(ui, repo, lines, fn=fn, recode=None,
                                    calcnodelines=True)[1]
    for tagname, taginfo in filetags.items():
        if not keeplinenums:
            for el in taginfo:
                el[1] = None
    return filetags

def grouptagnodesbyline(tagnodes):
    '''
    Group nearby nodes (i.e. those that must be written next to each other)

        groupednodes[-1][1].append(hexnode)
        if linenum is not None:
            prevlinenum = linenum
    return groupednodes

def writemergedtags(fcd, mergedtags):
    '''
    write the merged tags while trying to minimize the diff to the first parent

    This function uses the ordering info stored on the merged tags dict to

    # finally we can join the sorted groups to get the final contents of the
    # merged .hgtags file, and then write it to disk
    mergedtagstring = '\n'.join([tags for rank, tags in finaltags if tags])
    fcd.write(mergedtagstring + '\n', fcd.flags())

def singletagmerge(p1nodes, p2nodes):
    '''
    merge the nodes corresponding to a single tag

    # - non common highest ranking nodes
    # note that the common nodes plus the non common lowest ranking nodes is the
    # whole list of lr nodes
    return lrnodes + hrnodes[commonidx:]

def merge(repo, fcd, fco, fca):
    '''
    Merge the tags of two revisions, taking into account the base tags
    Try to minimize the diff between the merged tags and the first parent tags
    '''
    ui = repo.ui
    # read the p1, p2 and base tags
    # only keep the line numbers for the p1 tags
    p1tags = readtagsformerge(
        ui, repo, fcd.data().splitlines(), fn="p1 tags",
        keeplinenums=True)
    p2tags = readtagsformerge(
        ui, repo, fco.data().splitlines(), fn="p2 tags",
        keeplinenums=False)
    basetags = readtagsformerge(
        ui, repo, fca.data().splitlines(), fn="base tags",
        keeplinenums=False)

    # recover the list of "lost tags" (i.e. those that were found on the base
    # revision but not on one of the revisions being merged)
    basetagset = set(basetags)
    for n, pntags in enumerate((p1tags, p2tags)):

            continue
        mergedtags[tname] = mergednodes

    if conflictedtags:
        numconflicts = len(conflictedtags)
        ui.warn(_('automatic .hgtags merge failed\n'
            'the following %d tags are in conflict: %s\n')
            % (numconflicts, ', '.join(sorted(conflictedtags))))
        return True, 1

    writemergedtags(fcd, mergedtags)
    ui.note(_('.hgtags merged successfully\n'))
    return False, 0

43076:2372284d9457

from .i18n import _
from .node import (
    hex,
    nullid,
)
from . import (
    tags as tagsmod,
    util,
)

hexnullid = hex(nullid)


def readtagsformerge(ui, repo, lines, fn='', keeplinenums=False):
    '''read the .hgtags file into a structure that is suitable for merging

    Depending on the keeplinenums flag, clear the line numbers associated
    with each tag. This is done because only the line numbers of the first
    parent are useful for merging.
    '''
    filetags = tagsmod._readtaghist(
        ui, repo, lines, fn=fn, recode=None, calcnodelines=True
    )[1]
    for tagname, taginfo in filetags.items():
        if not keeplinenums:
            for el in taginfo:
                el[1] = None
    return filetags


def grouptagnodesbyline(tagnodes):
    '''
    Group nearby nodes (i.e. those that must be written next to each other)

        groupednodes[-1][1].append(hexnode)
        if linenum is not None:
            prevlinenum = linenum
    return groupednodes


def writemergedtags(fcd, mergedtags):
    '''
    write the merged tags while trying to minimize the diff to the first parent

    This function uses the ordering info stored on the merged tags dict to

    # finally we can join the sorted groups to get the final contents of the
    # merged .hgtags file, and then write it to disk
    mergedtagstring = '\n'.join([tags for rank, tags in finaltags if tags])
    fcd.write(mergedtagstring + '\n', fcd.flags())


def singletagmerge(p1nodes, p2nodes):
    '''
    merge the nodes corresponding to a single tag

    # - non common highest ranking nodes
    # note that the common nodes plus the non common lowest ranking nodes is the
    # whole list of lr nodes
    return lrnodes + hrnodes[commonidx:]


def merge(repo, fcd, fco, fca):
    '''
    Merge the tags of two revisions, taking into account the base tags
    Try to minimize the diff between the merged tags and the first parent tags
    '''
    ui = repo.ui
    # read the p1, p2 and base tags
    # only keep the line numbers for the p1 tags
    p1tags = readtagsformerge(
        ui, repo, fcd.data().splitlines(), fn="p1 tags", keeplinenums=True
    )
    p2tags = readtagsformerge(
        ui, repo, fco.data().splitlines(), fn="p2 tags", keeplinenums=False
    )
    basetags = readtagsformerge(
        ui, repo, fca.data().splitlines(), fn="base tags", keeplinenums=False
    )

    # recover the list of "lost tags" (i.e. those that were found on the base
    # revision but not on one of the revisions being merged)
    basetagset = set(basetags)
    for n, pntags in enumerate((p1tags, p2tags)):

            continue
        mergedtags[tname] = mergednodes

    if conflictedtags:
        numconflicts = len(conflictedtags)
        ui.warn(
            _(
                'automatic .hgtags merge failed\n'
                'the following %d tags are in conflict: %s\n'
            )
            % (numconflicts, ', '.join(sorted(conflictedtags)))
        )
        return True, 1

    writemergedtags(fcd, mergedtags)
    ui.note(_('.hgtags merged successfully\n'))
    return False, 0