Mercurial > public > mercurial-scm > hg-stable
comparison mercurial/revset.py @ 33417:d1b13d4995ed
revset: add experimental ancestors/descendants relation subscript
The relation name is 'generations' now, which may be changed in future.
| author | Yuya Nishihara <yuya@tcha.org> |
|---|---|
| date | Sat, 08 Jul 2017 13:15:17 +0900 |
| parents | 9467d5337292 |
| children | 9dcc3529e002 |
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| 33416:9467d5337292 | 33417:d1b13d4995ed |
|---|---|
| 153 | 153 |
| 154 def relationset(repo, subset, x, y, order): | 154 def relationset(repo, subset, x, y, order): |
| 155 raise error.ParseError(_("can't use a relation in this context")) | 155 raise error.ParseError(_("can't use a relation in this context")) |
| 156 | 156 |
| 157 def relsubscriptset(repo, subset, x, y, z, order): | 157 def relsubscriptset(repo, subset, x, y, z, order): |
| 158 raise error.ParseError(_("can't use a relation in this context")) | 158 # this is pretty basic implementation of 'x#y[z]' operator, still |
| 159 # experimental so undocumented. see the wiki for further ideas. | |
| 160 # https://www.mercurial-scm.org/wiki/RevsetOperatorPlan | |
| 161 rel = getsymbol(y) | |
| 162 n = getinteger(z, _("relation subscript must be an integer")) | |
| 163 | |
| 164 # TODO: perhaps this should be a table of relation functions | |
| 165 if rel in ('g', 'generations'): | |
| 166 # TODO: support range, rewrite tests, and drop startdepth argument | |
| 167 # from ancestors() and descendants() predicates | |
| 168 if n <= 0: | |
| 169 n = -n | |
| 170 return _ancestors(repo, subset, x, startdepth=n, stopdepth=n + 1) | |
| 171 else: | |
| 172 return _descendants(repo, subset, x, startdepth=n, stopdepth=n + 1) | |
| 173 | |
| 174 raise error.UnknownIdentifier(rel, ['generations']) | |
| 159 | 175 |
| 160 def subscriptset(repo, subset, x, y, order): | 176 def subscriptset(repo, subset, x, y, order): |
| 161 raise error.ParseError(_("can't use a subscript in this context")) | 177 raise error.ParseError(_("can't use a subscript in this context")) |
| 162 | 178 |
| 163 def listset(repo, subset, *xs): | 179 def listset(repo, subset, *xs): |