| Alphare | |
| pulkit |
| hg-reviewers |
The Struct object has all the piece we needs, so no need to duplicate
information on the revlog itself.
| Automatic diff as part of commit; lint not applicable. |
| Automatic diff as part of commit; unit tests not applicable. |
| Path | Packages | |||
|---|---|---|---|---|
| M | mercurial/pure/parsers.py (8 lines) |
| def offset_type(offset, type): | def offset_type(offset, type): | ||||
| return int(int(offset) << 16 | type) | return int(int(offset) << 16 | type) | ||||
| class BaseIndexObject(object): | class BaseIndexObject(object): | ||||
| # Format of an index entry according to Python's `struct` language | # Format of an index entry according to Python's `struct` language | ||||
| index_format = revlog_constants.INDEX_ENTRY_V1.format | index_format = revlog_constants.INDEX_ENTRY_V1 | ||||
| # Size of a C unsigned long long int, platform independent | # Size of a C unsigned long long int, platform independent | ||||
| big_int_size = struct.calcsize(b'>Q') | big_int_size = struct.calcsize(b'>Q') | ||||
| # Size of a C long int, platform independent | # Size of a C long int, platform independent | ||||
| int_size = struct.calcsize(b'>i') | int_size = struct.calcsize(b'>i') | ||||
| # Size of the entire index format | # Size of the entire index format | ||||
| index_size = revlog_constants.INDEX_ENTRY_V1.size | index_size = revlog_constants.INDEX_ENTRY_V1.size | ||||
| # An empty index entry, used as a default value to be overridden, or nullrev | # An empty index entry, used as a default value to be overridden, or nullrev | ||||
| null_item = (0, 0, 0, -1, -1, -1, -1, nullid) | null_item = (0, 0, 0, -1, -1, -1, -1, nullid) | ||||
| self.__dict__.pop('_nodemap', None) | self.__dict__.pop('_nodemap', None) | ||||
| def __len__(self): | def __len__(self): | ||||
| return self._lgt + len(self._extra) | return self._lgt + len(self._extra) | ||||
| def append(self, tup): | def append(self, tup): | ||||
| if '_nodemap' in vars(self): | if '_nodemap' in vars(self): | ||||
| self._nodemap[tup[7]] = len(self) | self._nodemap[tup[7]] = len(self) | ||||
| data = _pack(self.index_format, *tup) | data = self.index_format.pack(*tup) | ||||
| self._extra.append(data) | self._extra.append(data) | ||||
| def _check_index(self, i): | def _check_index(self, i): | ||||
| if not isinstance(i, int): | if not isinstance(i, int): | ||||
| raise TypeError(b"expecting int indexes") | raise TypeError(b"expecting int indexes") | ||||
| if i < 0 or i >= len(self): | if i < 0 or i >= len(self): | ||||
| raise IndexError | raise IndexError | ||||
| def __getitem__(self, i): | def __getitem__(self, i): | ||||
| if i == -1: | if i == -1: | ||||
| return self.null_item | return self.null_item | ||||
| self._check_index(i) | self._check_index(i) | ||||
| if i >= self._lgt: | if i >= self._lgt: | ||||
| data = self._extra[i - self._lgt] | data = self._extra[i - self._lgt] | ||||
| else: | else: | ||||
| index = self._calculate_index(i) | index = self._calculate_index(i) | ||||
| data = self._data[index : index + self.index_size] | data = self._data[index : index + self.index_size] | ||||
| r = _unpack(self.index_format, data) | r = self.index_format.unpack(data) | ||||
| if self._lgt and i == 0: | if self._lgt and i == 0: | ||||
| r = (offset_type(0, gettype(r[0])),) + r[1:] | r = (offset_type(0, gettype(r[0])),) + r[1:] | ||||
| return r | return r | ||||
| class IndexObject(BaseIndexObject): | class IndexObject(BaseIndexObject): | ||||
| def __init__(self, data): | def __init__(self, data): | ||||
| assert len(data) % self.index_size == 0 | assert len(data) % self.index_size == 0 | ||||
| if not inline: | if not inline: | ||||
| cls = IndexObject2 if revlogv2 else IndexObject | cls = IndexObject2 if revlogv2 else IndexObject | ||||
| return cls(data), None | return cls(data), None | ||||
| cls = InlinedIndexObject2 if revlogv2 else InlinedIndexObject | cls = InlinedIndexObject2 if revlogv2 else InlinedIndexObject | ||||
| return cls(data, inline), (0, data) | return cls(data, inline), (0, data) | ||||
| class Index2Mixin(object): | class Index2Mixin(object): | ||||
| index_format = revlog_constants.INDEX_ENTRY_V2.format | index_format = revlog_constants.INDEX_ENTRY_V2 | ||||
| index_size = revlog_constants.INDEX_ENTRY_V2.size | index_size = revlog_constants.INDEX_ENTRY_V2.size | ||||
| null_item = (0, 0, 0, -1, -1, -1, -1, nullid, 0, 0) | null_item = (0, 0, 0, -1, -1, -1, -1, nullid, 0, 0) | ||||
| def replace_sidedata_info(self, i, sidedata_offset, sidedata_length): | def replace_sidedata_info(self, i, sidedata_offset, sidedata_length): | ||||
| """ | """ | ||||
| Replace an existing index entry's sidedata offset and length with new | Replace an existing index entry's sidedata offset and length with new | ||||
| ones. | ones. | ||||
| This cannot be used outside of the context of sidedata rewriting, | This cannot be used outside of the context of sidedata rewriting, | ||||