Mercurial > public > mercurial-scm > hg-stable
comparison mercurial/context.py @ 26977:bd19561b98d9
filectx: allow custom comparators
We're going to introduce other sorts of filectxes very soon, and we'd like the
cmp method to function properly (i.e. commutatively) for them. The only way to
make that happen is for this cmp method to call into that specialized one if
that defines a custom comparator.
| author | Siddharth Agarwal <sid0@fb.com> |
|---|---|
| date | Fri, 13 Nov 2015 22:37:51 -0800 |
| parents | 5ba0a99ff27f |
| children | 9b9d4bcc915e |
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| 26976:c48fee950ce4 | 26977:bd19561b98d9 |
|---|---|
| 745 def isexec(self): | 745 def isexec(self): |
| 746 return 'x' in self.flags() | 746 return 'x' in self.flags() |
| 747 def islink(self): | 747 def islink(self): |
| 748 return 'l' in self.flags() | 748 return 'l' in self.flags() |
| 749 | 749 |
| 750 _customcmp = False | |
| 750 def cmp(self, fctx): | 751 def cmp(self, fctx): |
| 751 """compare with other file context | 752 """compare with other file context |
| 752 | 753 |
| 753 returns True if different than fctx. | 754 returns True if different than fctx. |
| 754 """ | 755 """ |
| 756 if fctx._customcmp: | |
| 757 return fctx.cmp(self) | |
| 758 | |
| 755 if (fctx._filerev is None | 759 if (fctx._filerev is None |
| 756 and (self._repo._encodefilterpats | 760 and (self._repo._encodefilterpats |
| 757 # if file data starts with '\1\n', empty metadata block is | 761 # if file data starts with '\1\n', empty metadata block is |
| 758 # prepended, which adds 4 bytes to filelog.size(). | 762 # prepended, which adds 4 bytes to filelog.size(). |
| 759 or self.size() - 4 == fctx.size()) | 763 or self.size() - 4 == fctx.size()) |