revisionbranchcache: fall back to slow path if starting readonly (issue4531)
Transitioning to Mercurial versions with revision branch cache could be slow as
long as all operations were readonly (revset queries) and the cache would be
populated but not written back.
Instead, fall back to using the consistently slow path when readonly and the
cache doesn't exist yet. That avoids the overhead of populating the cache
without writing it back.
If not readonly, it will still populate all missing entries initially. That
avoids repeated writing of the cache file with small updates, and it also makes
sure a fully populated cache available for the readonly operations.
# revset.py - revision set queries for mercurial
#
# Copyright 2010 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.
import re
import parser, util, error, discovery, hbisect, phases
import node
import heapq
import match as matchmod
from i18n import _
import encoding
import obsolete as obsmod
import pathutil
import repoview
def _revancestors(repo, revs, followfirst):
"""Like revlog.ancestors(), but supports followfirst."""
cut = followfirst and 1 or None
cl = repo.changelog
def iterate():
revqueue, revsnode = None, None
h = []
revs.sort(reverse=True)
revqueue = util.deque(revs)
if revqueue:
revsnode = revqueue.popleft()
heapq.heappush(h, -revsnode)
seen = set()
while h:
current = -heapq.heappop(h)
if current not in seen:
if revsnode and current == revsnode:
if revqueue:
revsnode = revqueue.popleft()
heapq.heappush(h, -revsnode)
seen.add(current)
yield current
for parent in cl.parentrevs(current)[:cut]:
if parent != node.nullrev:
heapq.heappush(h, -parent)
return generatorset(iterate(), iterasc=False)
def _revdescendants(repo, revs, followfirst):
"""Like revlog.descendants() but supports followfirst."""
cut = followfirst and 1 or None
def iterate():
cl = repo.changelog
first = min(revs)
nullrev = node.nullrev
if first == nullrev:
# Are there nodes with a null first parent and a non-null
# second one? Maybe. Do we care? Probably not.
for i in cl:
yield i
else:
seen = set(revs)
for i in cl.revs(first + 1):
for x in cl.parentrevs(i)[:cut]:
if x != nullrev and x in seen:
seen.add(i)
yield i
break
return generatorset(iterate(), iterasc=True)
def _revsbetween(repo, roots, heads):
"""Return all paths between roots and heads, inclusive of both endpoint
sets."""
if not roots:
return baseset()
parentrevs = repo.changelog.parentrevs
visit = list(heads)
reachable = set()
seen = {}
minroot = min(roots)
roots = set(roots)
# open-code the post-order traversal due to the tiny size of
# sys.getrecursionlimit()
while visit:
rev = visit.pop()
if rev in roots:
reachable.add(rev)
parents = parentrevs(rev)
seen[rev] = parents
for parent in parents:
if parent >= minroot and parent not in seen:
visit.append(parent)
if not reachable:
return baseset()
for rev in sorted(seen):
for parent in seen[rev]:
if parent in reachable:
reachable.add(rev)
return baseset(sorted(reachable))
elements = {
"(": (21, ("group", 1, ")"), ("func", 1, ")")),
"##": (20, None, ("_concat", 20)),
"~": (18, None, ("ancestor", 18)),
"^": (18, None, ("parent", 18), ("parentpost", 18)),
"-": (5, ("negate", 19), ("minus", 5)),
"::": (17, ("dagrangepre", 17), ("dagrange", 17),
("dagrangepost", 17)),
"..": (17, ("dagrangepre", 17), ("dagrange", 17),
("dagrangepost", 17)),
":": (15, ("rangepre", 15), ("range", 15), ("rangepost", 15)),
"not": (10, ("not", 10)),
"!": (10, ("not", 10)),
"and": (5, None, ("and", 5)),
"&": (5, None, ("and", 5)),
"%": (5, None, ("only", 5), ("onlypost", 5)),
"or": (4, None, ("or", 4)),
"|": (4, None, ("or", 4)),
"+": (4, None, ("or", 4)),
",": (2, None, ("list", 2)),
")": (0, None, None),
"symbol": (0, ("symbol",), None),
"string": (0, ("string",), None),
"end": (0, None, None),
}
keywords = set(['and', 'or', 'not'])
# default set of valid characters for the initial letter of symbols
_syminitletters = set(c for c in [chr(i) for i in xrange(256)]
if c.isalnum() or c in '._@' or ord(c) > 127)
# default set of valid characters for non-initial letters of symbols
_symletters = set(c for c in [chr(i) for i in xrange(256)]
if c.isalnum() or c in '-._/@' or ord(c) > 127)
def tokenize(program, lookup=None, syminitletters=None, symletters=None):
'''
Parse a revset statement into a stream of tokens
``syminitletters`` is the set of valid characters for the initial
letter of symbols.
By default, character ``c`` is recognized as valid for initial
letter of symbols, if ``c.isalnum() or c in '._@' or ord(c) > 127``.
``symletters`` is the set of valid characters for non-initial
letters of symbols.
By default, character ``c`` is recognized as valid for non-initial
letters of symbols, if ``c.isalnum() or c in '-._/@' or ord(c) > 127``.
Check that @ is a valid unquoted token character (issue3686):
>>> list(tokenize("@::"))
[('symbol', '@', 0), ('::', None, 1), ('end', None, 3)]
'''
if syminitletters is None:
syminitletters = _syminitletters
if symletters is None:
symletters = _symletters
pos, l = 0, len(program)
while pos < l:
c = program[pos]
if c.isspace(): # skip inter-token whitespace
pass
elif c == ':' and program[pos:pos + 2] == '::': # look ahead carefully
yield ('::', None, pos)
pos += 1 # skip ahead
elif c == '.' and program[pos:pos + 2] == '..': # look ahead carefully
yield ('..', None, pos)
pos += 1 # skip ahead
elif c == '#' and program[pos:pos + 2] == '##': # look ahead carefully
yield ('##', None, pos)
pos += 1 # skip ahead
elif c in "():,-|&+!~^%": # handle simple operators
yield (c, None, pos)
elif (c in '"\'' or c == 'r' and
program[pos:pos + 2] in ("r'", 'r"')): # handle quoted strings
if c == 'r':
pos += 1
c = program[pos]
decode = lambda x: x
else:
decode = lambda x: x.decode('string-escape')
pos += 1
s = pos
while pos < l: # find closing quote
d = program[pos]
if d == '\\': # skip over escaped characters
pos += 2
continue
if d == c:
yield ('string', decode(program[s:pos]), s)
break
pos += 1
else:
raise error.ParseError(_("unterminated string"), s)
# gather up a symbol/keyword
elif c in syminitletters:
s = pos
pos += 1
while pos < l: # find end of symbol
d = program[pos]
if d not in symletters:
break
if d == '.' and program[pos - 1] == '.': # special case for ..
pos -= 1
break
pos += 1
sym = program[s:pos]
if sym in keywords: # operator keywords
yield (sym, None, s)
elif '-' in sym:
# some jerk gave us foo-bar-baz, try to check if it's a symbol
if lookup and lookup(sym):
# looks like a real symbol
yield ('symbol', sym, s)
else:
# looks like an expression
parts = sym.split('-')
for p in parts[:-1]:
if p: # possible consecutive -
yield ('symbol', p, s)
s += len(p)
yield ('-', None, pos)
s += 1
if parts[-1]: # possible trailing -
yield ('symbol', parts[-1], s)
else:
yield ('symbol', sym, s)
pos -= 1
else:
raise error.ParseError(_("syntax error"), pos)
pos += 1
yield ('end', None, pos)
def parseerrordetail(inst):
"""Compose error message from specified ParseError object
"""
if len(inst.args) > 1:
return _('at %s: %s') % (inst.args[1], inst.args[0])
else:
return inst.args[0]
# helpers
def getstring(x, err):
if x and (x[0] == 'string' or x[0] == 'symbol'):
return x[1]
raise error.ParseError(err)
def getlist(x):
if not x:
return []
if x[0] == 'list':
return getlist(x[1]) + [x[2]]
return [x]
def getargs(x, min, max, err):
l = getlist(x)
if len(l) < min or (max >= 0 and len(l) > max):
raise error.ParseError(err)
return l
def isvalidsymbol(tree):
"""Examine whether specified ``tree`` is valid ``symbol`` or not
"""
return tree[0] == 'symbol' and len(tree) > 1
def getsymbol(tree):
"""Get symbol name from valid ``symbol`` in ``tree``
This assumes that ``tree`` is already examined by ``isvalidsymbol``.
"""
return tree[1]
def isvalidfunc(tree):
"""Examine whether specified ``tree`` is valid ``func`` or not
"""
return tree[0] == 'func' and len(tree) > 1 and isvalidsymbol(tree[1])
def getfuncname(tree):
"""Get function name from valid ``func`` in ``tree``
This assumes that ``tree`` is already examined by ``isvalidfunc``.
"""
return getsymbol(tree[1])
def getfuncargs(tree):
"""Get list of function arguments from valid ``func`` in ``tree``
This assumes that ``tree`` is already examined by ``isvalidfunc``.
"""
if len(tree) > 2:
return getlist(tree[2])
else:
return []
def getset(repo, subset, x):
if not x:
raise error.ParseError(_("missing argument"))
s = methods[x[0]](repo, subset, *x[1:])
if util.safehasattr(s, 'isascending'):
return s
return baseset(s)
def _getrevsource(repo, r):
extra = repo[r].extra()
for label in ('source', 'transplant_source', 'rebase_source'):
if label in extra:
try:
return repo[extra[label]].rev()
except error.RepoLookupError:
pass
return None
# operator methods
def stringset(repo, subset, x):
x = repo[x].rev()
if x == -1 and len(subset) == len(repo):
return baseset([-1])
if x in subset:
return baseset([x])
return baseset()
def symbolset(repo, subset, x):
if x in symbols:
raise error.ParseError(_("can't use %s here") % x)
return stringset(repo, subset, x)
def rangeset(repo, subset, x, y):
m = getset(repo, fullreposet(repo), x)
n = getset(repo, fullreposet(repo), y)
if not m or not n:
return baseset()
m, n = m.first(), n.last()
if m < n:
r = spanset(repo, m, n + 1)
else:
r = spanset(repo, m, n - 1)
return r & subset
def dagrange(repo, subset, x, y):
r = spanset(repo)
xs = _revsbetween(repo, getset(repo, r, x), getset(repo, r, y))
return xs & subset
def andset(repo, subset, x, y):
return getset(repo, getset(repo, subset, x), y)
def orset(repo, subset, x, y):
xl = getset(repo, subset, x)
yl = getset(repo, subset - xl, y)
return xl + yl
def notset(repo, subset, x):
return subset - getset(repo, subset, x)
def listset(repo, subset, a, b):
raise error.ParseError(_("can't use a list in this context"))
def func(repo, subset, a, b):
if a[0] == 'symbol' and a[1] in symbols:
return symbols[a[1]](repo, subset, b)
raise error.ParseError(_("not a function: %s") % a[1])
# functions
def adds(repo, subset, x):
"""``adds(pattern)``
Changesets that add a file matching pattern.
The pattern without explicit kind like ``glob:`` is expected to be
relative to the current directory and match against a file or a
directory.
"""
# i18n: "adds" is a keyword
pat = getstring(x, _("adds requires a pattern"))
return checkstatus(repo, subset, pat, 1)
def ancestor(repo, subset, x):
"""``ancestor(*changeset)``
A greatest common ancestor of the changesets.
Accepts 0 or more changesets.
Will return empty list when passed no args.
Greatest common ancestor of a single changeset is that changeset.
"""
# i18n: "ancestor" is a keyword
l = getlist(x)
rl = spanset(repo)
anc = None
# (getset(repo, rl, i) for i in l) generates a list of lists
for revs in (getset(repo, rl, i) for i in l):
for r in revs:
if anc is None:
anc = repo[r]
else:
anc = anc.ancestor(repo[r])
if anc is not None and anc.rev() in subset:
return baseset([anc.rev()])
return baseset()
def _ancestors(repo, subset, x, followfirst=False):
heads = getset(repo, spanset(repo), x)
if not heads:
return baseset()
s = _revancestors(repo, heads, followfirst)
return subset & s
def ancestors(repo, subset, x):
"""``ancestors(set)``
Changesets that are ancestors of a changeset in set.
"""
return _ancestors(repo, subset, x)
def _firstancestors(repo, subset, x):
# ``_firstancestors(set)``
# Like ``ancestors(set)`` but follows only the first parents.
return _ancestors(repo, subset, x, followfirst=True)
def ancestorspec(repo, subset, x, n):
"""``set~n``
Changesets that are the Nth ancestor (first parents only) of a changeset
in set.
"""
try:
n = int(n[1])
except (TypeError, ValueError):
raise error.ParseError(_("~ expects a number"))
ps = set()
cl = repo.changelog
for r in getset(repo, fullreposet(repo), x):
for i in range(n):
r = cl.parentrevs(r)[0]
ps.add(r)
return subset & ps
def author(repo, subset, x):
"""``author(string)``
Alias for ``user(string)``.
"""
# i18n: "author" is a keyword
n = encoding.lower(getstring(x, _("author requires a string")))
kind, pattern, matcher = _substringmatcher(n)
return subset.filter(lambda x: matcher(encoding.lower(repo[x].user())))
def bisect(repo, subset, x):
"""``bisect(string)``
Changesets marked in the specified bisect status:
- ``good``, ``bad``, ``skip``: csets explicitly marked as good/bad/skip
- ``goods``, ``bads`` : csets topologically good/bad
- ``range`` : csets taking part in the bisection
- ``pruned`` : csets that are goods, bads or skipped
- ``untested`` : csets whose fate is yet unknown
- ``ignored`` : csets ignored due to DAG topology
- ``current`` : the cset currently being bisected
"""
# i18n: "bisect" is a keyword
status = getstring(x, _("bisect requires a string")).lower()
state = set(hbisect.get(repo, status))
return subset & state
# Backward-compatibility
# - no help entry so that we do not advertise it any more
def bisected(repo, subset, x):
return bisect(repo, subset, x)
def bookmark(repo, subset, x):
"""``bookmark([name])``
The named bookmark or all bookmarks.
If `name` starts with `re:`, the remainder of the name is treated as
a regular expression. To match a bookmark that actually starts with `re:`,
use the prefix `literal:`.
"""
# i18n: "bookmark" is a keyword
args = getargs(x, 0, 1, _('bookmark takes one or no arguments'))
if args:
bm = getstring(args[0],
# i18n: "bookmark" is a keyword
_('the argument to bookmark must be a string'))
kind, pattern, matcher = _stringmatcher(bm)
bms = set()
if kind == 'literal':
bmrev = repo._bookmarks.get(pattern, None)
if not bmrev:
raise error.RepoLookupError(_("bookmark '%s' does not exist")
% bm)
bms.add(repo[bmrev].rev())
else:
matchrevs = set()
for name, bmrev in repo._bookmarks.iteritems():
if matcher(name):
matchrevs.add(bmrev)
if not matchrevs:
raise error.RepoLookupError(_("no bookmarks exist"
" that match '%s'") % pattern)
for bmrev in matchrevs:
bms.add(repo[bmrev].rev())
else:
bms = set([repo[r].rev()
for r in repo._bookmarks.values()])
bms -= set([node.nullrev])
return subset & bms
def branch(repo, subset, x):
"""``branch(string or set)``
All changesets belonging to the given branch or the branches of the given
changesets.
If `string` starts with `re:`, the remainder of the name is treated as
a regular expression. To match a branch that actually starts with `re:`,
use the prefix `literal:`.
"""
import branchmap
urepo = repo.unfiltered()
ucl = urepo.changelog
getbi = branchmap.revbranchcache(urepo, readonly=True).branchinfo
try:
b = getstring(x, '')
except error.ParseError:
# not a string, but another revspec, e.g. tip()
pass
else:
kind, pattern, matcher = _stringmatcher(b)
if kind == 'literal':
# note: falls through to the revspec case if no branch with
# this name exists
if pattern in repo.branchmap():
return subset.filter(lambda r: matcher(getbi(ucl, r)[0]))
else:
return subset.filter(lambda r: matcher(getbi(ucl, r)[0]))
s = getset(repo, spanset(repo), x)
b = set()
for r in s:
b.add(getbi(ucl, r)[0])
c = s.__contains__
return subset.filter(lambda r: c(r) or getbi(ucl, r)[0] in b)
def bumped(repo, subset, x):
"""``bumped()``
Mutable changesets marked as successors of public changesets.
Only non-public and non-obsolete changesets can be `bumped`.
"""
# i18n: "bumped" is a keyword
getargs(x, 0, 0, _("bumped takes no arguments"))
bumped = obsmod.getrevs(repo, 'bumped')
return subset & bumped
def bundle(repo, subset, x):
"""``bundle()``
Changesets in the bundle.
Bundle must be specified by the -R option."""
try:
bundlerevs = repo.changelog.bundlerevs
except AttributeError:
raise util.Abort(_("no bundle provided - specify with -R"))
return subset & bundlerevs
def checkstatus(repo, subset, pat, field):
hasset = matchmod.patkind(pat) == 'set'
mcache = [None]
def matches(x):
c = repo[x]
if not mcache[0] or hasset:
mcache[0] = matchmod.match(repo.root, repo.getcwd(), [pat], ctx=c)
m = mcache[0]
fname = None
if not m.anypats() and len(m.files()) == 1:
fname = m.files()[0]
if fname is not None:
if fname not in c.files():
return False
else:
for f in c.files():
if m(f):
break
else:
return False
files = repo.status(c.p1().node(), c.node())[field]
if fname is not None:
if fname in files:
return True
else:
for f in files:
if m(f):
return True
return subset.filter(matches)
def _children(repo, narrow, parentset):
cs = set()
if not parentset:
return baseset(cs)
pr = repo.changelog.parentrevs
minrev = min(parentset)
for r in narrow:
if r <= minrev:
continue
for p in pr(r):
if p in parentset:
cs.add(r)
return baseset(cs)
def children(repo, subset, x):
"""``children(set)``
Child changesets of changesets in set.
"""
s = getset(repo, fullreposet(repo), x)
cs = _children(repo, subset, s)
return subset & cs
def closed(repo, subset, x):
"""``closed()``
Changeset is closed.
"""
# i18n: "closed" is a keyword
getargs(x, 0, 0, _("closed takes no arguments"))
return subset.filter(lambda r: repo[r].closesbranch())
def contains(repo, subset, x):
"""``contains(pattern)``
The revision's manifest contains a file matching pattern (but might not
modify it). See :hg:`help patterns` for information about file patterns.
The pattern without explicit kind like ``glob:`` is expected to be
relative to the current directory and match against a file exactly
for efficiency.
"""
# i18n: "contains" is a keyword
pat = getstring(x, _("contains requires a pattern"))
def matches(x):
if not matchmod.patkind(pat):
pats = pathutil.canonpath(repo.root, repo.getcwd(), pat)
if pats in repo[x]:
return True
else:
c = repo[x]
m = matchmod.match(repo.root, repo.getcwd(), [pat], ctx=c)
for f in c.manifest():
if m(f):
return True
return False
return subset.filter(matches)
def converted(repo, subset, x):
"""``converted([id])``
Changesets converted from the given identifier in the old repository if
present, or all converted changesets if no identifier is specified.
"""
# There is exactly no chance of resolving the revision, so do a simple
# string compare and hope for the best
rev = None
# i18n: "converted" is a keyword
l = getargs(x, 0, 1, _('converted takes one or no arguments'))
if l:
# i18n: "converted" is a keyword
rev = getstring(l[0], _('converted requires a revision'))
def _matchvalue(r):
source = repo[r].extra().get('convert_revision', None)
return source is not None and (rev is None or source.startswith(rev))
return subset.filter(lambda r: _matchvalue(r))
def date(repo, subset, x):
"""``date(interval)``
Changesets within the interval, see :hg:`help dates`.
"""
# i18n: "date" is a keyword
ds = getstring(x, _("date requires a string"))
dm = util.matchdate(ds)
return subset.filter(lambda x: dm(repo[x].date()[0]))
def desc(repo, subset, x):
"""``desc(string)``
Search commit message for string. The match is case-insensitive.
"""
# i18n: "desc" is a keyword
ds = encoding.lower(getstring(x, _("desc requires a string")))
def matches(x):
c = repo[x]
return ds in encoding.lower(c.description())
return subset.filter(matches)
def _descendants(repo, subset, x, followfirst=False):
roots = getset(repo, spanset(repo), x)
if not roots:
return baseset()
s = _revdescendants(repo, roots, followfirst)
# Both sets need to be ascending in order to lazily return the union
# in the correct order.
base = subset & roots
desc = subset & s
result = base + desc
if subset.isascending():
result.sort()
elif subset.isdescending():
result.sort(reverse=True)
else:
result = subset & result
return result
def descendants(repo, subset, x):
"""``descendants(set)``
Changesets which are descendants of changesets in set.
"""
return _descendants(repo, subset, x)
def _firstdescendants(repo, subset, x):
# ``_firstdescendants(set)``
# Like ``descendants(set)`` but follows only the first parents.
return _descendants(repo, subset, x, followfirst=True)
def destination(repo, subset, x):
"""``destination([set])``
Changesets that were created by a graft, transplant or rebase operation,
with the given revisions specified as the source. Omitting the optional set
is the same as passing all().
"""
if x is not None:
sources = getset(repo, spanset(repo), x)
else:
sources = getall(repo, spanset(repo), x)
dests = set()
# subset contains all of the possible destinations that can be returned, so
# iterate over them and see if their source(s) were provided in the arg set.
# Even if the immediate src of r is not in the arg set, src's source (or
# further back) may be. Scanning back further than the immediate src allows
# transitive transplants and rebases to yield the same results as transitive
# grafts.
for r in subset:
src = _getrevsource(repo, r)
lineage = None
while src is not None:
if lineage is None:
lineage = list()
lineage.append(r)
# The visited lineage is a match if the current source is in the arg
# set. Since every candidate dest is visited by way of iterating
# subset, any dests further back in the lineage will be tested by a
# different iteration over subset. Likewise, if the src was already
# selected, the current lineage can be selected without going back
# further.
if src in sources or src in dests:
dests.update(lineage)
break
r = src
src = _getrevsource(repo, r)
return subset.filter(dests.__contains__)
def divergent(repo, subset, x):
"""``divergent()``
Final successors of changesets with an alternative set of final successors.
"""
# i18n: "divergent" is a keyword
getargs(x, 0, 0, _("divergent takes no arguments"))
divergent = obsmod.getrevs(repo, 'divergent')
return subset & divergent
def draft(repo, subset, x):
"""``draft()``
Changeset in draft phase."""
# i18n: "draft" is a keyword
getargs(x, 0, 0, _("draft takes no arguments"))
phase = repo._phasecache.phase
target = phases.draft
condition = lambda r: phase(repo, r) == target
return subset.filter(condition, cache=False)
def extinct(repo, subset, x):
"""``extinct()``
Obsolete changesets with obsolete descendants only.
"""
# i18n: "extinct" is a keyword
getargs(x, 0, 0, _("extinct takes no arguments"))
extincts = obsmod.getrevs(repo, 'extinct')
return subset & extincts
def extra(repo, subset, x):
"""``extra(label, [value])``
Changesets with the given label in the extra metadata, with the given
optional value.
If `value` starts with `re:`, the remainder of the value is treated as
a regular expression. To match a value that actually starts with `re:`,
use the prefix `literal:`.
"""
# i18n: "extra" is a keyword
l = getargs(x, 1, 2, _('extra takes at least 1 and at most 2 arguments'))
# i18n: "extra" is a keyword
label = getstring(l[0], _('first argument to extra must be a string'))
value = None
if len(l) > 1:
# i18n: "extra" is a keyword
value = getstring(l[1], _('second argument to extra must be a string'))
kind, value, matcher = _stringmatcher(value)
def _matchvalue(r):
extra = repo[r].extra()
return label in extra and (value is None or matcher(extra[label]))
return subset.filter(lambda r: _matchvalue(r))
def filelog(repo, subset, x):
"""``filelog(pattern)``
Changesets connected to the specified filelog.
For performance reasons, visits only revisions mentioned in the file-level
filelog, rather than filtering through all changesets (much faster, but
doesn't include deletes or duplicate changes). For a slower, more accurate
result, use ``file()``.
The pattern without explicit kind like ``glob:`` is expected to be
relative to the current directory and match against a file exactly
for efficiency.
If some linkrev points to revisions filtered by the current repoview, we'll
work around it to return a non-filtered value.
"""
# i18n: "filelog" is a keyword
pat = getstring(x, _("filelog requires a pattern"))
s = set()
cl = repo.changelog
if not matchmod.patkind(pat):
f = pathutil.canonpath(repo.root, repo.getcwd(), pat)
files = [f]
else:
m = matchmod.match(repo.root, repo.getcwd(), [pat], ctx=repo[None])
files = (f for f in repo[None] if m(f))
for f in files:
backrevref = {} # final value for: filerev -> changerev
lowestchild = {} # lowest known filerev child of a filerev
delayed = [] # filerev with filtered linkrev, for post-processing
lowesthead = None # cache for manifest content of all head revisions
fl = repo.file(f)
for fr in list(fl):
rev = fl.linkrev(fr)
if rev not in cl:
# changerev pointed in linkrev is filtered
# record it for post processing.
delayed.append((fr, rev))
continue
for p in fl.parentrevs(fr):
if 0 <= p and p not in lowestchild:
lowestchild[p] = fr
backrevref[fr] = rev
s.add(rev)
# Post-processing of all filerevs we skipped because they were
# filtered. If such filerevs have known and unfiltered children, this
# means they have an unfiltered appearance out there. We'll use linkrev
# adjustment to find one of these appearances. The lowest known child
# will be used as a starting point because it is the best upper-bound we
# have.
#
# This approach will fail when an unfiltered but linkrev-shadowed
# appearance exists in a head changeset without unfiltered filerev
# children anywhere.
while delayed:
# must be a descending iteration. To slowly fill lowest child
# information that is of potential use by the next item.
fr, rev = delayed.pop()
lkr = rev
child = lowestchild.get(fr)
if child is None:
# search for existence of this file revision in a head revision.
# There are three possibilities:
# - the revision exists in a head and we can find an
# introduction from there,
# - the revision does not exist in a head because it has been
# changed since its introduction: we would have found a child
# and be in the other 'else' clause,
# - all versions of the revision are hidden.
if lowesthead is None:
lowesthead = {}
for h in repo.heads():
fnode = repo[h].manifest().get(f)
if fnode is not None:
lowesthead[fl.rev(fnode)] = h
headrev = lowesthead.get(fr)
if headrev is None:
# content is nowhere unfiltered
continue
rev = repo[headrev][f].introrev()
else:
# the lowest known child is a good upper bound
childcrev = backrevref[child]
# XXX this does not guarantee returning the lowest
# introduction of this revision, but this gives a
# result which is a good start and will fit in most
# cases. We probably need to fix the multiple
# introductions case properly (report each
# introduction, even for identical file revisions)
# once and for all at some point anyway.
for p in repo[childcrev][f].parents():
if p.filerev() == fr:
rev = p.rev()
break
if rev == lkr: # no shadowed entry found
# XXX This should never happen unless some manifest points
# to biggish file revisions (like a revision that uses a
# parent that never appears in the manifest ancestors)
continue
# Fill the data for the next iteration.
for p in fl.parentrevs(fr):
if 0 <= p and p not in lowestchild:
lowestchild[p] = fr
backrevref[fr] = rev
s.add(rev)
return subset & s
def first(repo, subset, x):
"""``first(set, [n])``
An alias for limit().
"""
return limit(repo, subset, x)
def _follow(repo, subset, x, name, followfirst=False):
l = getargs(x, 0, 1, _("%s takes no arguments or a filename") % name)
c = repo['.']
if l:
x = getstring(l[0], _("%s expected a filename") % name)
if x in c:
cx = c[x]
s = set(ctx.rev() for ctx in cx.ancestors(followfirst=followfirst))
# include the revision responsible for the most recent version
s.add(cx.introrev())
else:
return baseset()
else:
s = _revancestors(repo, baseset([c.rev()]), followfirst)
return subset & s
def follow(repo, subset, x):
"""``follow([file])``
An alias for ``::.`` (ancestors of the working copy's first parent).
If a filename is specified, the history of the given file is followed,
including copies.
"""
return _follow(repo, subset, x, 'follow')
def _followfirst(repo, subset, x):
# ``followfirst([file])``
# Like ``follow([file])`` but follows only the first parent of
# every revision or file revision.
return _follow(repo, subset, x, '_followfirst', followfirst=True)
def getall(repo, subset, x):
"""``all()``
All changesets, the same as ``0:tip``.
"""
# i18n: "all" is a keyword
getargs(x, 0, 0, _("all takes no arguments"))
return subset
def grep(repo, subset, x):
"""``grep(regex)``
Like ``keyword(string)`` but accepts a regex. Use ``grep(r'...')``
to ensure special escape characters are handled correctly. Unlike
``keyword(string)``, the match is case-sensitive.
"""
try:
# i18n: "grep" is a keyword
gr = re.compile(getstring(x, _("grep requires a string")))
except re.error, e:
raise error.ParseError(_('invalid match pattern: %s') % e)
def matches(x):
c = repo[x]
for e in c.files() + [c.user(), c.description()]:
if gr.search(e):
return True
return False
return subset.filter(matches)
def _matchfiles(repo, subset, x):
# _matchfiles takes a revset list of prefixed arguments:
#
# [p:foo, i:bar, x:baz]
#
# builds a match object from them and filters subset. Allowed
# prefixes are 'p:' for regular patterns, 'i:' for include
# patterns and 'x:' for exclude patterns. Use 'r:' prefix to pass
# a revision identifier, or the empty string to reference the
# working directory, from which the match object is
# initialized. Use 'd:' to set the default matching mode, default
# to 'glob'. At most one 'r:' and 'd:' argument can be passed.
# i18n: "_matchfiles" is a keyword
l = getargs(x, 1, -1, _("_matchfiles requires at least one argument"))
pats, inc, exc = [], [], []
rev, default = None, None
for arg in l:
# i18n: "_matchfiles" is a keyword
s = getstring(arg, _("_matchfiles requires string arguments"))
prefix, value = s[:2], s[2:]
if prefix == 'p:':
pats.append(value)
elif prefix == 'i:':
inc.append(value)
elif prefix == 'x:':
exc.append(value)
elif prefix == 'r:':
if rev is not None:
# i18n: "_matchfiles" is a keyword
raise error.ParseError(_('_matchfiles expected at most one '
'revision'))
if value != '': # empty means working directory; leave rev as None
rev = value
elif prefix == 'd:':
if default is not None:
# i18n: "_matchfiles" is a keyword
raise error.ParseError(_('_matchfiles expected at most one '
'default mode'))
default = value
else:
# i18n: "_matchfiles" is a keyword
raise error.ParseError(_('invalid _matchfiles prefix: %s') % prefix)
if not default:
default = 'glob'
m = matchmod.match(repo.root, repo.getcwd(), pats, include=inc,
exclude=exc, ctx=repo[rev], default=default)
def matches(x):
for f in repo[x].files():
if m(f):
return True
return False
return subset.filter(matches)
def hasfile(repo, subset, x):
"""``file(pattern)``
Changesets affecting files matched by pattern.
For a faster but less accurate result, consider using ``filelog()``
instead.
This predicate uses ``glob:`` as the default kind of pattern.
"""
# i18n: "file" is a keyword
pat = getstring(x, _("file requires a pattern"))
return _matchfiles(repo, subset, ('string', 'p:' + pat))
def head(repo, subset, x):
"""``head()``
Changeset is a named branch head.
"""
# i18n: "head" is a keyword
getargs(x, 0, 0, _("head takes no arguments"))
hs = set()
for b, ls in repo.branchmap().iteritems():
hs.update(repo[h].rev() for h in ls)
return baseset(hs).filter(subset.__contains__)
def heads(repo, subset, x):
"""``heads(set)``
Members of set with no children in set.
"""
s = getset(repo, subset, x)
ps = parents(repo, subset, x)
return s - ps
def hidden(repo, subset, x):
"""``hidden()``
Hidden changesets.
"""
# i18n: "hidden" is a keyword
getargs(x, 0, 0, _("hidden takes no arguments"))
hiddenrevs = repoview.filterrevs(repo, 'visible')
return subset & hiddenrevs
def keyword(repo, subset, x):
"""``keyword(string)``
Search commit message, user name, and names of changed files for
string. The match is case-insensitive.
"""
# i18n: "keyword" is a keyword
kw = encoding.lower(getstring(x, _("keyword requires a string")))
def matches(r):
c = repo[r]
return util.any(kw in encoding.lower(t) for t in c.files() + [c.user(),
c.description()])
return subset.filter(matches)
def limit(repo, subset, x):
"""``limit(set, [n])``
First n members of set, defaulting to 1.
"""
# i18n: "limit" is a keyword
l = getargs(x, 1, 2, _("limit requires one or two arguments"))
try:
lim = 1
if len(l) == 2:
# i18n: "limit" is a keyword
lim = int(getstring(l[1], _("limit requires a number")))
except (TypeError, ValueError):
# i18n: "limit" is a keyword
raise error.ParseError(_("limit expects a number"))
ss = subset
os = getset(repo, spanset(repo), l[0])
result = []
it = iter(os)
for x in xrange(lim):
try:
y = it.next()
if y in ss:
result.append(y)
except (StopIteration):
break
return baseset(result)
def last(repo, subset, x):
"""``last(set, [n])``
Last n members of set, defaulting to 1.
"""
# i18n: "last" is a keyword
l = getargs(x, 1, 2, _("last requires one or two arguments"))
try:
lim = 1
if len(l) == 2:
# i18n: "last" is a keyword
lim = int(getstring(l[1], _("last requires a number")))
except (TypeError, ValueError):
# i18n: "last" is a keyword
raise error.ParseError(_("last expects a number"))
ss = subset
os = getset(repo, spanset(repo), l[0])
os.reverse()
result = []
it = iter(os)
for x in xrange(lim):
try:
y = it.next()
if y in ss:
result.append(y)
except (StopIteration):
break
return baseset(result)
def maxrev(repo, subset, x):
"""``max(set)``
Changeset with highest revision number in set.
"""
os = getset(repo, spanset(repo), x)
if os:
m = os.max()
if m in subset:
return baseset([m])
return baseset()
def merge(repo, subset, x):
"""``merge()``
Changeset is a merge changeset.
"""
# i18n: "merge" is a keyword
getargs(x, 0, 0, _("merge takes no arguments"))
cl = repo.changelog
return subset.filter(lambda r: cl.parentrevs(r)[1] != -1)
def branchpoint(repo, subset, x):
"""``branchpoint()``
Changesets with more than one child.
"""
# i18n: "branchpoint" is a keyword
getargs(x, 0, 0, _("branchpoint takes no arguments"))
cl = repo.changelog
if not subset:
return baseset()
baserev = min(subset)
parentscount = [0]*(len(repo) - baserev)
for r in cl.revs(start=baserev + 1):
for p in cl.parentrevs(r):
if p >= baserev:
parentscount[p - baserev] += 1
return subset.filter(lambda r: parentscount[r - baserev] > 1)
def minrev(repo, subset, x):
"""``min(set)``
Changeset with lowest revision number in set.
"""
os = getset(repo, spanset(repo), x)
if os:
m = os.min()
if m in subset:
return baseset([m])
return baseset()
def modifies(repo, subset, x):
"""``modifies(pattern)``
Changesets modifying files matched by pattern.
The pattern without explicit kind like ``glob:`` is expected to be
relative to the current directory and match against a file or a
directory.
"""
# i18n: "modifies" is a keyword
pat = getstring(x, _("modifies requires a pattern"))
return checkstatus(repo, subset, pat, 0)
def named(repo, subset, x):
"""``named(namespace)``
The changesets in a given namespace.
If `namespace` starts with `re:`, the remainder of the string is treated as
a regular expression. To match a namespace that actually starts with `re:`,
use the prefix `literal:`.
"""
# i18n: "named" is a keyword
args = getargs(x, 1, 1, _('named requires a namespace argument'))
ns = getstring(args[0],
# i18n: "named" is a keyword
_('the argument to named must be a string'))
kind, pattern, matcher = _stringmatcher(ns)
namespaces = set()
if kind == 'literal':
if pattern not in repo.names:
raise error.RepoLookupError(_("namespace '%s' does not exist")
% ns)
namespaces.add(repo.names[pattern])
else:
for name, ns in repo.names.iteritems():
if matcher(name):
namespaces.add(ns)
if not namespaces:
raise error.RepoLookupError(_("no namespace exists"
" that match '%s'") % pattern)
names = set()
for ns in namespaces:
for name in ns.listnames(repo):
if name not in ns.deprecated:
names.update(repo[n].rev() for n in ns.nodes(repo, name))
names -= set([node.nullrev])
return subset & names
def node_(repo, subset, x):
"""``id(string)``
Revision non-ambiguously specified by the given hex string prefix.
"""
# i18n: "id" is a keyword
l = getargs(x, 1, 1, _("id requires one argument"))
# i18n: "id" is a keyword
n = getstring(l[0], _("id requires a string"))
if len(n) == 40:
rn = repo[n].rev()
else:
rn = None
pm = repo.changelog._partialmatch(n)
if pm is not None:
rn = repo.changelog.rev(pm)
if rn is None:
return baseset()
result = baseset([rn])
return result & subset
def obsolete(repo, subset, x):
"""``obsolete()``
Mutable changeset with a newer version."""
# i18n: "obsolete" is a keyword
getargs(x, 0, 0, _("obsolete takes no arguments"))
obsoletes = obsmod.getrevs(repo, 'obsolete')
return subset & obsoletes
def only(repo, subset, x):
"""``only(set, [set])``
Changesets that are ancestors of the first set that are not ancestors
of any other head in the repo. If a second set is specified, the result
is ancestors of the first set that are not ancestors of the second set
(i.e. ::<set1> - ::<set2>).
"""
cl = repo.changelog
# i18n: "only" is a keyword
args = getargs(x, 1, 2, _('only takes one or two arguments'))
include = getset(repo, spanset(repo), args[0])
if len(args) == 1:
if not include:
return baseset()
descendants = set(_revdescendants(repo, include, False))
exclude = [rev for rev in cl.headrevs()
if not rev in descendants and not rev in include]
else:
exclude = getset(repo, spanset(repo), args[1])
results = set(cl.findmissingrevs(common=exclude, heads=include))
return subset & results
def origin(repo, subset, x):
"""``origin([set])``
Changesets that were specified as a source for the grafts, transplants or
rebases that created the given revisions. Omitting the optional set is the
same as passing all(). If a changeset created by these operations is itself
specified as a source for one of these operations, only the source changeset
for the first operation is selected.
"""
if x is not None:
dests = getset(repo, spanset(repo), x)
else:
dests = getall(repo, spanset(repo), x)
def _firstsrc(rev):
src = _getrevsource(repo, rev)
if src is None:
return None
while True:
prev = _getrevsource(repo, src)
if prev is None:
return src
src = prev
o = set([_firstsrc(r) for r in dests])
o -= set([None])
return subset & o
def outgoing(repo, subset, x):
"""``outgoing([path])``
Changesets not found in the specified destination repository, or the
default push location.
"""
import hg # avoid start-up nasties
# i18n: "outgoing" is a keyword
l = getargs(x, 0, 1, _("outgoing takes one or no arguments"))
# i18n: "outgoing" is a keyword
dest = l and getstring(l[0], _("outgoing requires a repository path")) or ''
dest = repo.ui.expandpath(dest or 'default-push', dest or 'default')
dest, branches = hg.parseurl(dest)
revs, checkout = hg.addbranchrevs(repo, repo, branches, [])
if revs:
revs = [repo.lookup(rev) for rev in revs]
other = hg.peer(repo, {}, dest)
repo.ui.pushbuffer()
outgoing = discovery.findcommonoutgoing(repo, other, onlyheads=revs)
repo.ui.popbuffer()
cl = repo.changelog
o = set([cl.rev(r) for r in outgoing.missing])
return subset & o
def p1(repo, subset, x):
"""``p1([set])``
First parent of changesets in set, or the working directory.
"""
if x is None:
p = repo[x].p1().rev()
if p >= 0:
return subset & baseset([p])
return baseset()
ps = set()
cl = repo.changelog
for r in getset(repo, spanset(repo), x):
ps.add(cl.parentrevs(r)[0])
ps -= set([node.nullrev])
return subset & ps
def p2(repo, subset, x):
"""``p2([set])``
Second parent of changesets in set, or the working directory.
"""
if x is None:
ps = repo[x].parents()
try:
p = ps[1].rev()
if p >= 0:
return subset & baseset([p])
return baseset()
except IndexError:
return baseset()
ps = set()
cl = repo.changelog
for r in getset(repo, spanset(repo), x):
ps.add(cl.parentrevs(r)[1])
ps -= set([node.nullrev])
return subset & ps
def parents(repo, subset, x):
"""``parents([set])``
The set of all parents for all changesets in set, or the working directory.
"""
if x is None:
ps = set(p.rev() for p in repo[x].parents())
else:
ps = set()
cl = repo.changelog
for r in getset(repo, spanset(repo), x):
ps.update(cl.parentrevs(r))
ps -= set([node.nullrev])
return subset & ps
def parentspec(repo, subset, x, n):
"""``set^0``
The set.
``set^1`` (or ``set^``), ``set^2``
First or second parent, respectively, of all changesets in set.
"""
try:
n = int(n[1])
if n not in (0, 1, 2):
raise ValueError
except (TypeError, ValueError):
raise error.ParseError(_("^ expects a number 0, 1, or 2"))
ps = set()
cl = repo.changelog
for r in getset(repo, fullreposet(repo), x):
if n == 0:
ps.add(r)
elif n == 1:
ps.add(cl.parentrevs(r)[0])
elif n == 2:
parents = cl.parentrevs(r)
if len(parents) > 1:
ps.add(parents[1])
return subset & ps
def present(repo, subset, x):
"""``present(set)``
An empty set, if any revision in set isn't found; otherwise,
all revisions in set.
If any of specified revisions is not present in the local repository,
the query is normally aborted. But this predicate allows the query
to continue even in such cases.
"""
try:
return getset(repo, subset, x)
except error.RepoLookupError:
return baseset()
def public(repo, subset, x):
"""``public()``
Changeset in public phase."""
# i18n: "public" is a keyword
getargs(x, 0, 0, _("public takes no arguments"))
phase = repo._phasecache.phase
target = phases.public
condition = lambda r: phase(repo, r) == target
return subset.filter(condition, cache=False)
def remote(repo, subset, x):
"""``remote([id [,path]])``
Local revision that corresponds to the given identifier in a
remote repository, if present. Here, the '.' identifier is a
synonym for the current local branch.
"""
import hg # avoid start-up nasties
# i18n: "remote" is a keyword
l = getargs(x, 0, 2, _("remote takes one, two or no arguments"))
q = '.'
if len(l) > 0:
# i18n: "remote" is a keyword
q = getstring(l[0], _("remote requires a string id"))
if q == '.':
q = repo['.'].branch()
dest = ''
if len(l) > 1:
# i18n: "remote" is a keyword
dest = getstring(l[1], _("remote requires a repository path"))
dest = repo.ui.expandpath(dest or 'default')
dest, branches = hg.parseurl(dest)
revs, checkout = hg.addbranchrevs(repo, repo, branches, [])
if revs:
revs = [repo.lookup(rev) for rev in revs]
other = hg.peer(repo, {}, dest)
n = other.lookup(q)
if n in repo:
r = repo[n].rev()
if r in subset:
return baseset([r])
return baseset()
def removes(repo, subset, x):
"""``removes(pattern)``
Changesets which remove files matching pattern.
The pattern without explicit kind like ``glob:`` is expected to be
relative to the current directory and match against a file or a
directory.
"""
# i18n: "removes" is a keyword
pat = getstring(x, _("removes requires a pattern"))
return checkstatus(repo, subset, pat, 2)
def rev(repo, subset, x):
"""``rev(number)``
Revision with the given numeric identifier.
"""
# i18n: "rev" is a keyword
l = getargs(x, 1, 1, _("rev requires one argument"))
try:
# i18n: "rev" is a keyword
l = int(getstring(l[0], _("rev requires a number")))
except (TypeError, ValueError):
# i18n: "rev" is a keyword
raise error.ParseError(_("rev expects a number"))
if l not in fullreposet(repo) and l != node.nullrev:
return baseset()
return subset & baseset([l])
def matching(repo, subset, x):
"""``matching(revision [, field])``
Changesets in which a given set of fields match the set of fields in the
selected revision or set.
To match more than one field pass the list of fields to match separated
by spaces (e.g. ``author description``).
Valid fields are most regular revision fields and some special fields.
Regular revision fields are ``description``, ``author``, ``branch``,
``date``, ``files``, ``phase``, ``parents``, ``substate``, ``user``
and ``diff``.
Note that ``author`` and ``user`` are synonyms. ``diff`` refers to the
contents of the revision. Two revisions matching their ``diff`` will
also match their ``files``.
Special fields are ``summary`` and ``metadata``:
``summary`` matches the first line of the description.
``metadata`` is equivalent to matching ``description user date``
(i.e. it matches the main metadata fields).
``metadata`` is the default field which is used when no fields are
specified. You can match more than one field at a time.
"""
# i18n: "matching" is a keyword
l = getargs(x, 1, 2, _("matching takes 1 or 2 arguments"))
revs = getset(repo, fullreposet(repo), l[0])
fieldlist = ['metadata']
if len(l) > 1:
fieldlist = getstring(l[1],
# i18n: "matching" is a keyword
_("matching requires a string "
"as its second argument")).split()
# Make sure that there are no repeated fields,
# expand the 'special' 'metadata' field type
# and check the 'files' whenever we check the 'diff'
fields = []
for field in fieldlist:
if field == 'metadata':
fields += ['user', 'description', 'date']
elif field == 'diff':
# a revision matching the diff must also match the files
# since matching the diff is very costly, make sure to
# also match the files first
fields += ['files', 'diff']
else:
if field == 'author':
field = 'user'
fields.append(field)
fields = set(fields)
if 'summary' in fields and 'description' in fields:
# If a revision matches its description it also matches its summary
fields.discard('summary')
# We may want to match more than one field
# Not all fields take the same amount of time to be matched
# Sort the selected fields in order of increasing matching cost
fieldorder = ['phase', 'parents', 'user', 'date', 'branch', 'summary',
'files', 'description', 'substate', 'diff']
def fieldkeyfunc(f):
try:
return fieldorder.index(f)
except ValueError:
# assume an unknown field is very costly
return len(fieldorder)
fields = list(fields)
fields.sort(key=fieldkeyfunc)
# Each field will be matched with its own "getfield" function
# which will be added to the getfieldfuncs array of functions
getfieldfuncs = []
_funcs = {
'user': lambda r: repo[r].user(),
'branch': lambda r: repo[r].branch(),
'date': lambda r: repo[r].date(),
'description': lambda r: repo[r].description(),
'files': lambda r: repo[r].files(),
'parents': lambda r: repo[r].parents(),
'phase': lambda r: repo[r].phase(),
'substate': lambda r: repo[r].substate,
'summary': lambda r: repo[r].description().splitlines()[0],
'diff': lambda r: list(repo[r].diff(git=True),)
}
for info in fields:
getfield = _funcs.get(info, None)
if getfield is None:
raise error.ParseError(
# i18n: "matching" is a keyword
_("unexpected field name passed to matching: %s") % info)
getfieldfuncs.append(getfield)
# convert the getfield array of functions into a "getinfo" function
# which returns an array of field values (or a single value if there
# is only one field to match)
getinfo = lambda r: [f(r) for f in getfieldfuncs]
def matches(x):
for rev in revs:
target = getinfo(rev)
match = True
for n, f in enumerate(getfieldfuncs):
if target[n] != f(x):
match = False
if match:
return True
return False
return subset.filter(matches)
def reverse(repo, subset, x):
"""``reverse(set)``
Reverse order of set.
"""
l = getset(repo, subset, x)
l.reverse()
return l
def roots(repo, subset, x):
"""``roots(set)``
Changesets in set with no parent changeset in set.
"""
s = getset(repo, spanset(repo), x)
subset = baseset([r for r in s if r in subset])
cs = _children(repo, subset, s)
return subset - cs
def secret(repo, subset, x):
"""``secret()``
Changeset in secret phase."""
# i18n: "secret" is a keyword
getargs(x, 0, 0, _("secret takes no arguments"))
phase = repo._phasecache.phase
target = phases.secret
condition = lambda r: phase(repo, r) == target
return subset.filter(condition, cache=False)
def sort(repo, subset, x):
"""``sort(set[, [-]key...])``
Sort set by keys. The default sort order is ascending, specify a key
as ``-key`` to sort in descending order.
The keys can be:
- ``rev`` for the revision number,
- ``branch`` for the branch name,
- ``desc`` for the commit message (description),
- ``user`` for user name (``author`` can be used as an alias),
- ``date`` for the commit date
"""
# i18n: "sort" is a keyword
l = getargs(x, 1, 2, _("sort requires one or two arguments"))
keys = "rev"
if len(l) == 2:
# i18n: "sort" is a keyword
keys = getstring(l[1], _("sort spec must be a string"))
s = l[0]
keys = keys.split()
l = []
def invert(s):
return "".join(chr(255 - ord(c)) for c in s)
revs = getset(repo, subset, s)
if keys == ["rev"]:
revs.sort()
return revs
elif keys == ["-rev"]:
revs.sort(reverse=True)
return revs
for r in revs:
c = repo[r]
e = []
for k in keys:
if k == 'rev':
e.append(r)
elif k == '-rev':
e.append(-r)
elif k == 'branch':
e.append(c.branch())
elif k == '-branch':
e.append(invert(c.branch()))
elif k == 'desc':
e.append(c.description())
elif k == '-desc':
e.append(invert(c.description()))
elif k in 'user author':
e.append(c.user())
elif k in '-user -author':
e.append(invert(c.user()))
elif k == 'date':
e.append(c.date()[0])
elif k == '-date':
e.append(-c.date()[0])
else:
raise error.ParseError(_("unknown sort key %r") % k)
e.append(r)
l.append(e)
l.sort()
return baseset([e[-1] for e in l])
def _stringmatcher(pattern):
"""
accepts a string, possibly starting with 're:' or 'literal:' prefix.
returns the matcher name, pattern, and matcher function.
missing or unknown prefixes are treated as literal matches.
helper for tests:
>>> def test(pattern, *tests):
... kind, pattern, matcher = _stringmatcher(pattern)
... return (kind, pattern, [bool(matcher(t)) for t in tests])
exact matching (no prefix):
>>> test('abcdefg', 'abc', 'def', 'abcdefg')
('literal', 'abcdefg', [False, False, True])
regex matching ('re:' prefix)
>>> test('re:a.+b', 'nomatch', 'fooadef', 'fooadefbar')
('re', 'a.+b', [False, False, True])
force exact matches ('literal:' prefix)
>>> test('literal:re:foobar', 'foobar', 're:foobar')
('literal', 're:foobar', [False, True])
unknown prefixes are ignored and treated as literals
>>> test('foo:bar', 'foo', 'bar', 'foo:bar')
('literal', 'foo:bar', [False, False, True])
"""
if pattern.startswith('re:'):
pattern = pattern[3:]
try:
regex = re.compile(pattern)
except re.error, e:
raise error.ParseError(_('invalid regular expression: %s')
% e)
return 're', pattern, regex.search
elif pattern.startswith('literal:'):
pattern = pattern[8:]
return 'literal', pattern, pattern.__eq__
def _substringmatcher(pattern):
kind, pattern, matcher = _stringmatcher(pattern)
if kind == 'literal':
matcher = lambda s: pattern in s
return kind, pattern, matcher
def tag(repo, subset, x):
"""``tag([name])``
The specified tag by name, or all tagged revisions if no name is given.
If `name` starts with `re:`, the remainder of the name is treated as
a regular expression. To match a tag that actually starts with `re:`,
use the prefix `literal:`.
"""
# i18n: "tag" is a keyword
args = getargs(x, 0, 1, _("tag takes one or no arguments"))
cl = repo.changelog
if args:
pattern = getstring(args[0],
# i18n: "tag" is a keyword
_('the argument to tag must be a string'))
kind, pattern, matcher = _stringmatcher(pattern)
if kind == 'literal':
# avoid resolving all tags
tn = repo._tagscache.tags.get(pattern, None)
if tn is None:
raise error.RepoLookupError(_("tag '%s' does not exist")
% pattern)
s = set([repo[tn].rev()])
else:
s = set([cl.rev(n) for t, n in repo.tagslist() if matcher(t)])
else:
s = set([cl.rev(n) for t, n in repo.tagslist() if t != 'tip'])
return subset & s
def tagged(repo, subset, x):
return tag(repo, subset, x)
def unstable(repo, subset, x):
"""``unstable()``
Non-obsolete changesets with obsolete ancestors.
"""
# i18n: "unstable" is a keyword
getargs(x, 0, 0, _("unstable takes no arguments"))
unstables = obsmod.getrevs(repo, 'unstable')
return subset & unstables
def user(repo, subset, x):
"""``user(string)``
User name contains string. The match is case-insensitive.
If `string` starts with `re:`, the remainder of the string is treated as
a regular expression. To match a user that actually contains `re:`, use
the prefix `literal:`.
"""
return author(repo, subset, x)
# for internal use
def _list(repo, subset, x):
s = getstring(x, "internal error")
if not s:
return baseset()
ls = [repo[r].rev() for r in s.split('\0')]
s = subset
return baseset([r for r in ls if r in s])
# for internal use
def _intlist(repo, subset, x):
s = getstring(x, "internal error")
if not s:
return baseset()
ls = [int(r) for r in s.split('\0')]
s = subset
return baseset([r for r in ls if r in s])
# for internal use
def _hexlist(repo, subset, x):
s = getstring(x, "internal error")
if not s:
return baseset()
cl = repo.changelog
ls = [cl.rev(node.bin(r)) for r in s.split('\0')]
s = subset
return baseset([r for r in ls if r in s])
symbols = {
"adds": adds,
"all": getall,
"ancestor": ancestor,
"ancestors": ancestors,
"_firstancestors": _firstancestors,
"author": author,
"bisect": bisect,
"bisected": bisected,
"bookmark": bookmark,
"branch": branch,
"branchpoint": branchpoint,
"bumped": bumped,
"bundle": bundle,
"children": children,
"closed": closed,
"contains": contains,
"converted": converted,
"date": date,
"desc": desc,
"descendants": descendants,
"_firstdescendants": _firstdescendants,
"destination": destination,
"divergent": divergent,
"draft": draft,
"extinct": extinct,
"extra": extra,
"file": hasfile,
"filelog": filelog,
"first": first,
"follow": follow,
"_followfirst": _followfirst,
"grep": grep,
"head": head,
"heads": heads,
"hidden": hidden,
"id": node_,
"keyword": keyword,
"last": last,
"limit": limit,
"_matchfiles": _matchfiles,
"max": maxrev,
"merge": merge,
"min": minrev,
"modifies": modifies,
"named": named,
"obsolete": obsolete,
"only": only,
"origin": origin,
"outgoing": outgoing,
"p1": p1,
"p2": p2,
"parents": parents,
"present": present,
"public": public,
"remote": remote,
"removes": removes,
"rev": rev,
"reverse": reverse,
"roots": roots,
"sort": sort,
"secret": secret,
"matching": matching,
"tag": tag,
"tagged": tagged,
"user": user,
"unstable": unstable,
"_list": _list,
"_intlist": _intlist,
"_hexlist": _hexlist,
}
# symbols which can't be used for a DoS attack for any given input
# (e.g. those which accept regexes as plain strings shouldn't be included)
# functions that just return a lot of changesets (like all) don't count here
safesymbols = set([
"adds",
"all",
"ancestor",
"ancestors",
"_firstancestors",
"author",
"bisect",
"bisected",
"bookmark",
"branch",
"branchpoint",
"bumped",
"bundle",
"children",
"closed",
"converted",
"date",
"desc",
"descendants",
"_firstdescendants",
"destination",
"divergent",
"draft",
"extinct",
"extra",
"file",
"filelog",
"first",
"follow",
"_followfirst",
"head",
"heads",
"hidden",
"id",
"keyword",
"last",
"limit",
"_matchfiles",
"max",
"merge",
"min",
"modifies",
"obsolete",
"only",
"origin",
"outgoing",
"p1",
"p2",
"parents",
"present",
"public",
"remote",
"removes",
"rev",
"reverse",
"roots",
"sort",
"secret",
"matching",
"tag",
"tagged",
"user",
"unstable",
"_list",
"_intlist",
"_hexlist",
])
methods = {
"range": rangeset,
"dagrange": dagrange,
"string": stringset,
"symbol": symbolset,
"and": andset,
"or": orset,
"not": notset,
"list": listset,
"func": func,
"ancestor": ancestorspec,
"parent": parentspec,
"parentpost": p1,
"only": only,
"onlypost": only,
}
def optimize(x, small):
if x is None:
return 0, x
smallbonus = 1
if small:
smallbonus = .5
op = x[0]
if op == 'minus':
return optimize(('and', x[1], ('not', x[2])), small)
elif op == 'only':
return optimize(('func', ('symbol', 'only'),
('list', x[1], x[2])), small)
elif op == 'dagrangepre':
return optimize(('func', ('symbol', 'ancestors'), x[1]), small)
elif op == 'dagrangepost':
return optimize(('func', ('symbol', 'descendants'), x[1]), small)
elif op == 'rangepre':
return optimize(('range', ('string', '0'), x[1]), small)
elif op == 'rangepost':
return optimize(('range', x[1], ('string', 'tip')), small)
elif op == 'negate':
return optimize(('string',
'-' + getstring(x[1], _("can't negate that"))), small)
elif op in 'string symbol negate':
return smallbonus, x # single revisions are small
elif op == 'and':
wa, ta = optimize(x[1], True)
wb, tb = optimize(x[2], True)
# (::x and not ::y)/(not ::y and ::x) have a fast path
def isonly(revs, bases):
return (
revs[0] == 'func'
and getstring(revs[1], _('not a symbol')) == 'ancestors'
and bases[0] == 'not'
and bases[1][0] == 'func'
and getstring(bases[1][1], _('not a symbol')) == 'ancestors')
w = min(wa, wb)
if isonly(ta, tb):
return w, ('func', ('symbol', 'only'), ('list', ta[2], tb[1][2]))
if isonly(tb, ta):
return w, ('func', ('symbol', 'only'), ('list', tb[2], ta[1][2]))
if wa > wb:
return w, (op, tb, ta)
return w, (op, ta, tb)
elif op == 'or':
wa, ta = optimize(x[1], False)
wb, tb = optimize(x[2], False)
if wb < wa:
wb, wa = wa, wb
return max(wa, wb), (op, ta, tb)
elif op == 'not':
o = optimize(x[1], not small)
return o[0], (op, o[1])
elif op == 'parentpost':
o = optimize(x[1], small)
return o[0], (op, o[1])
elif op == 'group':
return optimize(x[1], small)
elif op in 'dagrange range list parent ancestorspec':
if op == 'parent':
# x^:y means (x^) : y, not x ^ (:y)
post = ('parentpost', x[1])
if x[2][0] == 'dagrangepre':
return optimize(('dagrange', post, x[2][1]), small)
elif x[2][0] == 'rangepre':
return optimize(('range', post, x[2][1]), small)
wa, ta = optimize(x[1], small)
wb, tb = optimize(x[2], small)
return wa + wb, (op, ta, tb)
elif op == 'func':
f = getstring(x[1], _("not a symbol"))
wa, ta = optimize(x[2], small)
if f in ("author branch closed date desc file grep keyword "
"outgoing user"):
w = 10 # slow
elif f in "modifies adds removes":
w = 30 # slower
elif f == "contains":
w = 100 # very slow
elif f == "ancestor":
w = 1 * smallbonus
elif f in "reverse limit first _intlist":
w = 0
elif f in "sort":
w = 10 # assume most sorts look at changelog
else:
w = 1
return w + wa, (op, x[1], ta)
return 1, x
_aliasarg = ('func', ('symbol', '_aliasarg'))
def _getaliasarg(tree):
"""If tree matches ('func', ('symbol', '_aliasarg'), ('string', X))
return X, None otherwise.
"""
if (len(tree) == 3 and tree[:2] == _aliasarg
and tree[2][0] == 'string'):
return tree[2][1]
return None
def _checkaliasarg(tree, known=None):
"""Check tree contains no _aliasarg construct or only ones which
value is in known. Used to avoid alias placeholders injection.
"""
if isinstance(tree, tuple):
arg = _getaliasarg(tree)
if arg is not None and (not known or arg not in known):
raise error.ParseError(_("not a function: %s") % '_aliasarg')
for t in tree:
_checkaliasarg(t, known)
# the set of valid characters for the initial letter of symbols in
# alias declarations and definitions
_aliassyminitletters = set(c for c in [chr(i) for i in xrange(256)]
if c.isalnum() or c in '._@$' or ord(c) > 127)
def _tokenizealias(program, lookup=None):
"""Parse alias declaration/definition into a stream of tokens
This allows symbol names to use also ``$`` as an initial letter
(for backward compatibility), and callers of this function should
examine whether ``$`` is used also for unexpected symbols or not.
"""
return tokenize(program, lookup=lookup,
syminitletters=_aliassyminitletters)
def _parsealiasdecl(decl):
"""Parse alias declaration ``decl``
This returns ``(name, tree, args, errorstr)`` tuple:
- ``name``: of declared alias (may be ``decl`` itself at error)
- ``tree``: parse result (or ``None`` at error)
- ``args``: list of alias argument names (or None for symbol declaration)
- ``errorstr``: detail about detected error (or None)
>>> _parsealiasdecl('foo')
('foo', ('symbol', 'foo'), None, None)
>>> _parsealiasdecl('$foo')
('$foo', None, None, "'$' not for alias arguments")
>>> _parsealiasdecl('foo::bar')
('foo::bar', None, None, 'invalid format')
>>> _parsealiasdecl('foo bar')
('foo bar', None, None, 'at 4: invalid token')
>>> _parsealiasdecl('foo()')
('foo', ('func', ('symbol', 'foo')), [], None)
>>> _parsealiasdecl('$foo()')
('$foo()', None, None, "'$' not for alias arguments")
>>> _parsealiasdecl('foo($1, $2)')
('foo', ('func', ('symbol', 'foo')), ['$1', '$2'], None)
>>> _parsealiasdecl('foo(bar_bar, baz.baz)')
('foo', ('func', ('symbol', 'foo')), ['bar_bar', 'baz.baz'], None)
>>> _parsealiasdecl('foo($1, $2, nested($1, $2))')
('foo($1, $2, nested($1, $2))', None, None, 'invalid argument list')
>>> _parsealiasdecl('foo(bar($1, $2))')
('foo(bar($1, $2))', None, None, 'invalid argument list')
>>> _parsealiasdecl('foo("string")')
('foo("string")', None, None, 'invalid argument list')
>>> _parsealiasdecl('foo($1, $2')
('foo($1, $2', None, None, 'at 10: unexpected token: end')
>>> _parsealiasdecl('foo("string')
('foo("string', None, None, 'at 5: unterminated string')
>>> _parsealiasdecl('foo($1, $2, $1)')
('foo', None, None, 'argument names collide with each other')
"""
p = parser.parser(_tokenizealias, elements)
try:
tree, pos = p.parse(decl)
if (pos != len(decl)):
raise error.ParseError(_('invalid token'), pos)
if isvalidsymbol(tree):
# "name = ...." style
name = getsymbol(tree)
if name.startswith('$'):
return (decl, None, None, _("'$' not for alias arguments"))
return (name, ('symbol', name), None, None)
if isvalidfunc(tree):
# "name(arg, ....) = ...." style
name = getfuncname(tree)
if name.startswith('$'):
return (decl, None, None, _("'$' not for alias arguments"))
args = []
for arg in getfuncargs(tree):
if not isvalidsymbol(arg):
return (decl, None, None, _("invalid argument list"))
args.append(getsymbol(arg))
if len(args) != len(set(args)):
return (name, None, None,
_("argument names collide with each other"))
return (name, ('func', ('symbol', name)), args, None)
return (decl, None, None, _("invalid format"))
except error.ParseError, inst:
return (decl, None, None, parseerrordetail(inst))
class revsetalias(object):
# whether own `error` information is already shown or not.
# this avoids showing same warning multiple times at each `findaliases`.
warned = False
def __init__(self, name, value):
'''Aliases like:
h = heads(default)
b($1) = ancestors($1) - ancestors(default)
'''
self.name, self.tree, self.args, self.error = _parsealiasdecl(name)
if self.error:
self.error = _('failed to parse the declaration of revset alias'
' "%s": %s') % (self.name, self.error)
return
if self.args:
for arg in self.args:
# _aliasarg() is an unknown symbol only used separate
# alias argument placeholders from regular strings.
value = value.replace(arg, '_aliasarg(%r)' % (arg,))
try:
self.replacement, pos = parse(value)
if pos != len(value):
raise error.ParseError(_('invalid token'), pos)
# Check for placeholder injection
_checkaliasarg(self.replacement, self.args)
except error.ParseError, inst:
self.error = _('failed to parse the definition of revset alias'
' "%s": %s') % (self.name, parseerrordetail(inst))
def _getalias(aliases, tree):
"""If tree looks like an unexpanded alias, return it. Return None
otherwise.
"""
if isinstance(tree, tuple) and tree:
if tree[0] == 'symbol' and len(tree) == 2:
name = tree[1]
alias = aliases.get(name)
if alias and alias.args is None and alias.tree == tree:
return alias
if tree[0] == 'func' and len(tree) > 1:
if tree[1][0] == 'symbol' and len(tree[1]) == 2:
name = tree[1][1]
alias = aliases.get(name)
if alias and alias.args is not None and alias.tree == tree[:2]:
return alias
return None
def _expandargs(tree, args):
"""Replace _aliasarg instances with the substitution value of the
same name in args, recursively.
"""
if not tree or not isinstance(tree, tuple):
return tree
arg = _getaliasarg(tree)
if arg is not None:
return args[arg]
return tuple(_expandargs(t, args) for t in tree)
def _expandaliases(aliases, tree, expanding, cache):
"""Expand aliases in tree, recursively.
'aliases' is a dictionary mapping user defined aliases to
revsetalias objects.
"""
if not isinstance(tree, tuple):
# Do not expand raw strings
return tree
alias = _getalias(aliases, tree)
if alias is not None:
if alias.error:
raise util.Abort(alias.error)
if alias in expanding:
raise error.ParseError(_('infinite expansion of revset alias "%s" '
'detected') % alias.name)
expanding.append(alias)
if alias.name not in cache:
cache[alias.name] = _expandaliases(aliases, alias.replacement,
expanding, cache)
result = cache[alias.name]
expanding.pop()
if alias.args is not None:
l = getlist(tree[2])
if len(l) != len(alias.args):
raise error.ParseError(
_('invalid number of arguments: %s') % len(l))
l = [_expandaliases(aliases, a, [], cache) for a in l]
result = _expandargs(result, dict(zip(alias.args, l)))
else:
result = tuple(_expandaliases(aliases, t, expanding, cache)
for t in tree)
return result
def findaliases(ui, tree, showwarning=None):
_checkaliasarg(tree)
aliases = {}
for k, v in ui.configitems('revsetalias'):
alias = revsetalias(k, v)
aliases[alias.name] = alias
tree = _expandaliases(aliases, tree, [], {})
if showwarning:
# warn about problematic (but not referred) aliases
for name, alias in sorted(aliases.iteritems()):
if alias.error and not alias.warned:
showwarning(_('warning: %s\n') % (alias.error))
alias.warned = True
return tree
def foldconcat(tree):
"""Fold elements to be concatenated by `##`
"""
if not isinstance(tree, tuple) or tree[0] in ('string', 'symbol'):
return tree
if tree[0] == '_concat':
pending = [tree]
l = []
while pending:
e = pending.pop()
if e[0] == '_concat':
pending.extend(reversed(e[1:]))
elif e[0] in ('string', 'symbol'):
l.append(e[1])
else:
msg = _("\"##\" can't concatenate \"%s\" element") % (e[0])
raise error.ParseError(msg)
return ('string', ''.join(l))
else:
return tuple(foldconcat(t) for t in tree)
def parse(spec, lookup=None):
p = parser.parser(tokenize, elements)
return p.parse(spec, lookup=lookup)
def match(ui, spec, repo=None):
if not spec:
raise error.ParseError(_("empty query"))
lookup = None
if repo:
lookup = repo.__contains__
tree, pos = parse(spec, lookup)
if (pos != len(spec)):
raise error.ParseError(_("invalid token"), pos)
if ui:
tree = findaliases(ui, tree, showwarning=ui.warn)
tree = foldconcat(tree)
weight, tree = optimize(tree, True)
def mfunc(repo, subset):
if util.safehasattr(subset, 'isascending'):
result = getset(repo, subset, tree)
else:
result = getset(repo, baseset(subset), tree)
return result
return mfunc
def formatspec(expr, *args):
'''
This is a convenience function for using revsets internally, and
escapes arguments appropriately. Aliases are intentionally ignored
so that intended expression behavior isn't accidentally subverted.
Supported arguments:
%r = revset expression, parenthesized
%d = int(arg), no quoting
%s = string(arg), escaped and single-quoted
%b = arg.branch(), escaped and single-quoted
%n = hex(arg), single-quoted
%% = a literal '%'
Prefixing the type with 'l' specifies a parenthesized list of that type.
>>> formatspec('%r:: and %lr', '10 or 11', ("this()", "that()"))
'(10 or 11):: and ((this()) or (that()))'
>>> formatspec('%d:: and not %d::', 10, 20)
'10:: and not 20::'
>>> formatspec('%ld or %ld', [], [1])
"_list('') or 1"
>>> formatspec('keyword(%s)', 'foo\\xe9')
"keyword('foo\\\\xe9')"
>>> b = lambda: 'default'
>>> b.branch = b
>>> formatspec('branch(%b)', b)
"branch('default')"
>>> formatspec('root(%ls)', ['a', 'b', 'c', 'd'])
"root(_list('a\\x00b\\x00c\\x00d'))"
'''
def quote(s):
return repr(str(s))
def argtype(c, arg):
if c == 'd':
return str(int(arg))
elif c == 's':
return quote(arg)
elif c == 'r':
parse(arg) # make sure syntax errors are confined
return '(%s)' % arg
elif c == 'n':
return quote(node.hex(arg))
elif c == 'b':
return quote(arg.branch())
def listexp(s, t):
l = len(s)
if l == 0:
return "_list('')"
elif l == 1:
return argtype(t, s[0])
elif t == 'd':
return "_intlist('%s')" % "\0".join(str(int(a)) for a in s)
elif t == 's':
return "_list('%s')" % "\0".join(s)
elif t == 'n':
return "_hexlist('%s')" % "\0".join(node.hex(a) for a in s)
elif t == 'b':
return "_list('%s')" % "\0".join(a.branch() for a in s)
m = l // 2
return '(%s or %s)' % (listexp(s[:m], t), listexp(s[m:], t))
ret = ''
pos = 0
arg = 0
while pos < len(expr):
c = expr[pos]
if c == '%':
pos += 1
d = expr[pos]
if d == '%':
ret += d
elif d in 'dsnbr':
ret += argtype(d, args[arg])
arg += 1
elif d == 'l':
# a list of some type
pos += 1
d = expr[pos]
ret += listexp(list(args[arg]), d)
arg += 1
else:
raise util.Abort('unexpected revspec format character %s' % d)
else:
ret += c
pos += 1
return ret
def prettyformat(tree):
def _prettyformat(tree, level, lines):
if not isinstance(tree, tuple) or tree[0] in ('string', 'symbol'):
lines.append((level, str(tree)))
else:
lines.append((level, '(%s' % tree[0]))
for s in tree[1:]:
_prettyformat(s, level + 1, lines)
lines[-1:] = [(lines[-1][0], lines[-1][1] + ')')]
lines = []
_prettyformat(tree, 0, lines)
output = '\n'.join((' '*l + s) for l, s in lines)
return output
def depth(tree):
if isinstance(tree, tuple):
return max(map(depth, tree)) + 1
else:
return 0
def funcsused(tree):
if not isinstance(tree, tuple) or tree[0] in ('string', 'symbol'):
return set()
else:
funcs = set()
for s in tree[1:]:
funcs |= funcsused(s)
if tree[0] == 'func':
funcs.add(tree[1][1])
return funcs
class abstractsmartset(object):
def __nonzero__(self):
"""True if the smartset is not empty"""
raise NotImplementedError()
def __contains__(self, rev):
"""provide fast membership testing"""
raise NotImplementedError()
def __iter__(self):
"""iterate the set in the order it is supposed to be iterated"""
raise NotImplementedError()
# Attributes containing a function to perform a fast iteration in a given
# direction. A smartset can have none, one, or both defined.
#
# Default value is None instead of a function returning None to avoid
# initializing an iterator just for testing if a fast method exists.
fastasc = None
fastdesc = None
def isascending(self):
"""True if the set will iterate in ascending order"""
raise NotImplementedError()
def isdescending(self):
"""True if the set will iterate in descending order"""
raise NotImplementedError()
def min(self):
"""return the minimum element in the set"""
if self.fastasc is not None:
for r in self.fastasc():
return r
raise ValueError('arg is an empty sequence')
return min(self)
def max(self):
"""return the maximum element in the set"""
if self.fastdesc is not None:
for r in self.fastdesc():
return r
raise ValueError('arg is an empty sequence')
return max(self)
def first(self):
"""return the first element in the set (user iteration perspective)
Return None if the set is empty"""
raise NotImplementedError()
def last(self):
"""return the last element in the set (user iteration perspective)
Return None if the set is empty"""
raise NotImplementedError()
def __len__(self):
"""return the length of the smartsets
This can be expensive on smartset that could be lazy otherwise."""
raise NotImplementedError()
def reverse(self):
"""reverse the expected iteration order"""
raise NotImplementedError()
def sort(self, reverse=True):
"""get the set to iterate in an ascending or descending order"""
raise NotImplementedError()
def __and__(self, other):
"""Returns a new object with the intersection of the two collections.
This is part of the mandatory API for smartset."""
return self.filter(other.__contains__, cache=False)
def __add__(self, other):
"""Returns a new object with the union of the two collections.
This is part of the mandatory API for smartset."""
return addset(self, other)
def __sub__(self, other):
"""Returns a new object with the substraction of the two collections.
This is part of the mandatory API for smartset."""
c = other.__contains__
return self.filter(lambda r: not c(r), cache=False)
def filter(self, condition, cache=True):
"""Returns this smartset filtered by condition as a new smartset.
`condition` is a callable which takes a revision number and returns a
boolean.
This is part of the mandatory API for smartset."""
# builtin cannot be cached. but do not needs to
if cache and util.safehasattr(condition, 'func_code'):
condition = util.cachefunc(condition)
return filteredset(self, condition)
class baseset(abstractsmartset):
"""Basic data structure that represents a revset and contains the basic
operation that it should be able to perform.
Every method in this class should be implemented by any smartset class.
"""
def __init__(self, data=()):
if not isinstance(data, list):
data = list(data)
self._list = data
self._ascending = None
@util.propertycache
def _set(self):
return set(self._list)
@util.propertycache
def _asclist(self):
asclist = self._list[:]
asclist.sort()
return asclist
def __iter__(self):
if self._ascending is None:
return iter(self._list)
elif self._ascending:
return iter(self._asclist)
else:
return reversed(self._asclist)
def fastasc(self):
return iter(self._asclist)
def fastdesc(self):
return reversed(self._asclist)
@util.propertycache
def __contains__(self):
return self._set.__contains__
def __nonzero__(self):
return bool(self._list)
def sort(self, reverse=False):
self._ascending = not bool(reverse)
def reverse(self):
if self._ascending is None:
self._list.reverse()
else:
self._ascending = not self._ascending
def __len__(self):
return len(self._list)
def isascending(self):
"""Returns True if the collection is ascending order, False if not.
This is part of the mandatory API for smartset."""
if len(self) <= 1:
return True
return self._ascending is not None and self._ascending
def isdescending(self):
"""Returns True if the collection is descending order, False if not.
This is part of the mandatory API for smartset."""
if len(self) <= 1:
return True
return self._ascending is not None and not self._ascending
def first(self):
if self:
if self._ascending is None:
return self._list[0]
elif self._ascending:
return self._asclist[0]
else:
return self._asclist[-1]
return None
def last(self):
if self:
if self._ascending is None:
return self._list[-1]
elif self._ascending:
return self._asclist[-1]
else:
return self._asclist[0]
return None
class filteredset(abstractsmartset):
"""Duck type for baseset class which iterates lazily over the revisions in
the subset and contains a function which tests for membership in the
revset
"""
def __init__(self, subset, condition=lambda x: True):
"""
condition: a function that decide whether a revision in the subset
belongs to the revset or not.
"""
self._subset = subset
self._condition = condition
self._cache = {}
def __contains__(self, x):
c = self._cache
if x not in c:
v = c[x] = x in self._subset and self._condition(x)
return v
return c[x]
def __iter__(self):
return self._iterfilter(self._subset)
def _iterfilter(self, it):
cond = self._condition
for x in it:
if cond(x):
yield x
@property
def fastasc(self):
it = self._subset.fastasc
if it is None:
return None
return lambda: self._iterfilter(it())
@property
def fastdesc(self):
it = self._subset.fastdesc
if it is None:
return None
return lambda: self._iterfilter(it())
def __nonzero__(self):
for r in self:
return True
return False
def __len__(self):
# Basic implementation to be changed in future patches.
l = baseset([r for r in self])
return len(l)
def sort(self, reverse=False):
self._subset.sort(reverse=reverse)
def reverse(self):
self._subset.reverse()
def isascending(self):
return self._subset.isascending()
def isdescending(self):
return self._subset.isdescending()
def first(self):
for x in self:
return x
return None
def last(self):
it = None
if self._subset.isascending:
it = self.fastdesc
elif self._subset.isdescending:
it = self.fastdesc
if it is None:
# slowly consume everything. This needs improvement
it = lambda: reversed(list(self))
for x in it():
return x
return None
class addset(abstractsmartset):
"""Represent the addition of two sets
Wrapper structure for lazily adding two structures without losing much
performance on the __contains__ method
If the ascending attribute is set, that means the two structures are
ordered in either an ascending or descending way. Therefore, we can add
them maintaining the order by iterating over both at the same time
"""
def __init__(self, revs1, revs2, ascending=None):
self._r1 = revs1
self._r2 = revs2
self._iter = None
self._ascending = ascending
self._genlist = None
self._asclist = None
def __len__(self):
return len(self._list)
def __nonzero__(self):
return bool(self._r1) or bool(self._r2)
@util.propertycache
def _list(self):
if not self._genlist:
self._genlist = baseset(self._iterator())
return self._genlist
def _iterator(self):
"""Iterate over both collections without repeating elements
If the ascending attribute is not set, iterate over the first one and
then over the second one checking for membership on the first one so we
dont yield any duplicates.
If the ascending attribute is set, iterate over both collections at the
same time, yielding only one value at a time in the given order.
"""
if self._ascending is None:
def gen():
for r in self._r1:
yield r
inr1 = self._r1.__contains__
for r in self._r2:
if not inr1(r):
yield r
gen = gen()
else:
iter1 = iter(self._r1)
iter2 = iter(self._r2)
gen = self._iterordered(self._ascending, iter1, iter2)
return gen
def __iter__(self):
if self._ascending is None:
if self._genlist:
return iter(self._genlist)
return iter(self._iterator())
self._trysetasclist()
if self._ascending:
it = self.fastasc
else:
it = self.fastdesc
if it is None:
# consume the gen and try again
self._list
return iter(self)
return it()
def _trysetasclist(self):
"""populate the _asclist attribute if possible and necessary"""
if self._genlist is not None and self._asclist is None:
self._asclist = sorted(self._genlist)
@property
def fastasc(self):
self._trysetasclist()
if self._asclist is not None:
return self._asclist.__iter__
iter1 = self._r1.fastasc
iter2 = self._r2.fastasc
if None in (iter1, iter2):
return None
return lambda: self._iterordered(True, iter1(), iter2())
@property
def fastdesc(self):
self._trysetasclist()
if self._asclist is not None:
return self._asclist.__reversed__
iter1 = self._r1.fastdesc
iter2 = self._r2.fastdesc
if None in (iter1, iter2):
return None
return lambda: self._iterordered(False, iter1(), iter2())
def _iterordered(self, ascending, iter1, iter2):
"""produce an ordered iteration from two iterators with the same order
The ascending is used to indicated the iteration direction.
"""
choice = max
if ascending:
choice = min
val1 = None
val2 = None
choice = max
if ascending:
choice = min
try:
# Consume both iterators in an ordered way until one is
# empty
while True:
if val1 is None:
val1 = iter1.next()
if val2 is None:
val2 = iter2.next()
next = choice(val1, val2)
yield next
if val1 == next:
val1 = None
if val2 == next:
val2 = None
except StopIteration:
# Flush any remaining values and consume the other one
it = iter2
if val1 is not None:
yield val1
it = iter1
elif val2 is not None:
# might have been equality and both are empty
yield val2
for val in it:
yield val
def __contains__(self, x):
return x in self._r1 or x in self._r2
def sort(self, reverse=False):
"""Sort the added set
For this we use the cached list with all the generated values and if we
know they are ascending or descending we can sort them in a smart way.
"""
self._ascending = not reverse
def isascending(self):
return self._ascending is not None and self._ascending
def isdescending(self):
return self._ascending is not None and not self._ascending
def reverse(self):
if self._ascending is None:
self._list.reverse()
else:
self._ascending = not self._ascending
def first(self):
for x in self:
return x
return None
def last(self):
self.reverse()
val = self.first()
self.reverse()
return val
class generatorset(abstractsmartset):
"""Wrap a generator for lazy iteration
Wrapper structure for generators that provides lazy membership and can
be iterated more than once.
When asked for membership it generates values until either it finds the
requested one or has gone through all the elements in the generator
"""
def __init__(self, gen, iterasc=None):
"""
gen: a generator producing the values for the generatorset.
"""
self._gen = gen
self._asclist = None
self._cache = {}
self._genlist = []
self._finished = False
self._ascending = True
if iterasc is not None:
if iterasc:
self.fastasc = self._iterator
self.__contains__ = self._asccontains
else:
self.fastdesc = self._iterator
self.__contains__ = self._desccontains
def __nonzero__(self):
for r in self:
return True
return False
def __contains__(self, x):
if x in self._cache:
return self._cache[x]
# Use new values only, as existing values would be cached.
for l in self._consumegen():
if l == x:
return True
self._cache[x] = False
return False
def _asccontains(self, x):
"""version of contains optimised for ascending generator"""
if x in self._cache:
return self._cache[x]
# Use new values only, as existing values would be cached.
for l in self._consumegen():
if l == x:
return True
if l > x:
break
self._cache[x] = False
return False
def _desccontains(self, x):
"""version of contains optimised for descending generator"""
if x in self._cache:
return self._cache[x]
# Use new values only, as existing values would be cached.
for l in self._consumegen():
if l == x:
return True
if l < x:
break
self._cache[x] = False
return False
def __iter__(self):
if self._ascending:
it = self.fastasc
else:
it = self.fastdesc
if it is not None:
return it()
# we need to consume the iterator
for x in self._consumegen():
pass
# recall the same code
return iter(self)
def _iterator(self):
if self._finished:
return iter(self._genlist)
# We have to use this complex iteration strategy to allow multiple
# iterations at the same time. We need to be able to catch revision
# removed from _consumegen and added to genlist in another instance.
#
# Getting rid of it would provide an about 15% speed up on this
# iteration.
genlist = self._genlist
nextrev = self._consumegen().next
_len = len # cache global lookup
def gen():
i = 0
while True:
if i < _len(genlist):
yield genlist[i]
else:
yield nextrev()
i += 1
return gen()
def _consumegen(self):
cache = self._cache
genlist = self._genlist.append
for item in self._gen:
cache[item] = True
genlist(item)
yield item
if not self._finished:
self._finished = True
asc = self._genlist[:]
asc.sort()
self._asclist = asc
self.fastasc = asc.__iter__
self.fastdesc = asc.__reversed__
def __len__(self):
for x in self._consumegen():
pass
return len(self._genlist)
def sort(self, reverse=False):
self._ascending = not reverse
def reverse(self):
self._ascending = not self._ascending
def isascending(self):
return self._ascending
def isdescending(self):
return not self._ascending
def first(self):
if self._ascending:
it = self.fastasc
else:
it = self.fastdesc
if it is None:
# we need to consume all and try again
for x in self._consumegen():
pass
return self.first()
if self:
return it().next()
return None
def last(self):
if self._ascending:
it = self.fastdesc
else:
it = self.fastasc
if it is None:
# we need to consume all and try again
for x in self._consumegen():
pass
return self.first()
if self:
return it().next()
return None
def spanset(repo, start=None, end=None):
"""factory function to dispatch between fullreposet and actual spanset
Feel free to update all spanset call sites and kill this function at some
point.
"""
if start is None and end is None:
return fullreposet(repo)
return _spanset(repo, start, end)
class _spanset(abstractsmartset):
"""Duck type for baseset class which represents a range of revisions and
can work lazily and without having all the range in memory
Note that spanset(x, y) behave almost like xrange(x, y) except for two
notable points:
- when x < y it will be automatically descending,
- revision filtered with this repoview will be skipped.
"""
def __init__(self, repo, start=0, end=None):
"""
start: first revision included the set
(default to 0)
end: first revision excluded (last+1)
(default to len(repo)
Spanset will be descending if `end` < `start`.
"""
if end is None:
end = len(repo)
self._ascending = start <= end
if not self._ascending:
start, end = end + 1, start +1
self._start = start
self._end = end
self._hiddenrevs = repo.changelog.filteredrevs
def sort(self, reverse=False):
self._ascending = not reverse
def reverse(self):
self._ascending = not self._ascending
def _iterfilter(self, iterrange):
s = self._hiddenrevs
for r in iterrange:
if r not in s:
yield r
def __iter__(self):
if self._ascending:
return self.fastasc()
else:
return self.fastdesc()
def fastasc(self):
iterrange = xrange(self._start, self._end)
if self._hiddenrevs:
return self._iterfilter(iterrange)
return iter(iterrange)
def fastdesc(self):
iterrange = xrange(self._end - 1, self._start - 1, -1)
if self._hiddenrevs:
return self._iterfilter(iterrange)
return iter(iterrange)
def __contains__(self, rev):
hidden = self._hiddenrevs
return ((self._start <= rev < self._end)
and not (hidden and rev in hidden))
def __nonzero__(self):
for r in self:
return True
return False
def __len__(self):
if not self._hiddenrevs:
return abs(self._end - self._start)
else:
count = 0
start = self._start
end = self._end
for rev in self._hiddenrevs:
if (end < rev <= start) or (start <= rev < end):
count += 1
return abs(self._end - self._start) - count
def isascending(self):
return self._ascending
def isdescending(self):
return not self._ascending
def first(self):
if self._ascending:
it = self.fastasc
else:
it = self.fastdesc
for x in it():
return x
return None
def last(self):
if self._ascending:
it = self.fastdesc
else:
it = self.fastasc
for x in it():
return x
return None
class fullreposet(_spanset):
"""a set containing all revisions in the repo
This class exists to host special optimization.
"""
def __init__(self, repo):
super(fullreposet, self).__init__(repo)
def __and__(self, other):
"""As self contains the whole repo, all of the other set should also be
in self. Therefore `self & other = other`.
This boldly assumes the other contains valid revs only.
"""
# other not a smartset, make is so
if not util.safehasattr(other, 'isascending'):
# filter out hidden revision
# (this boldly assumes all smartset are pure)
#
# `other` was used with "&", let's assume this is a set like
# object.
other = baseset(other - self._hiddenrevs)
other.sort(reverse=self.isdescending())
return other
# tell hggettext to extract docstrings from these functions:
i18nfunctions = symbols.values()