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rhg: add support for narrow clones and sparse checkouts...
rhg: add support for narrow clones and sparse checkouts This adds a minimal support that can be implemented without parsing the narrowspec. We can parse the narrowspec and add support for more operations later. The reason we need so few code changes is as follows: Most operations need no special treatment of sparse because some of them only read dirstate (`rhg files` without `-r`), which bakes in the filtering, some of them only read store (`rhg files -r`, `rhg cat`), and some of them read no data at all (`rhg root`, `rhg debugrequirements`). `status` is the command that might care about sparse, so we just disable rhg on it. For narrow clones, `rhg files` clearly needs the narrowspec to work correctly, so we fall back. `rhg cat` seems to work consistently with `hg cat` if the file exists. If the file is hidden by narrow spec, the error message is different and confusing, so that's something that we should improve in follow-up patches. Differential Revision: https://phab.mercurial-scm.org/D11764

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copymap.rs
122 lines | 3.3 KiB | application/rls-services+xml | RustLexer
Raphaël Gomès
rust-dirstate: rust-cpython bridge for dirstatemap...
r42999 // copymap.rs
//
// Copyright 2019 Raphaël Gomès <rgomes@octobus.net>
//
// This software may be used and distributed according to the terms of the
// GNU General Public License version 2 or any later version.
//! Bindings for `hg::dirstate::dirstate_map::CopyMap` provided by the
//! `hg-core` package.
Yuya Nishihara
rust-cpython: switch to upstreamed version of PySharedRefCell...
r44703 use cpython::{
PyBytes, PyClone, PyDict, PyObject, PyResult, Python, UnsafePyLeaked,
};
Raphaël Gomès
rust-dirstate: rust-cpython bridge for dirstatemap...
r42999 use std::cell::RefCell;
Simon Sapin
dirstate-v2: Make more APIs fallible, returning Result...
r48126 use crate::dirstate::dirstate_map::v2_error;
Yuya Nishihara
rust-cpython: move $leaked struct out of macro...
r43447 use crate::dirstate::dirstate_map::DirstateMap;
Simon Sapin
dirstate: Remove the flat Rust DirstateMap implementation...
r48882 use hg::dirstate::CopyMapIter;
Simon Sapin
dirstate-v2: Make more APIs fallible, returning Result...
r48126 use hg::dirstate_tree::on_disk::DirstateV2ParseError;
Simon Sapin
rust: Use `&HgPath` instead of `&HgPathBuf` in may APIs...
r47894 use hg::utils::hg_path::HgPath;
Raphaël Gomès
rust-dirstate: rust-cpython bridge for dirstatemap...
r42999
py_class!(pub class CopyMap |py| {
data dirstate_map: DirstateMap;
def __getitem__(&self, key: PyObject) -> PyResult<PyBytes> {
(*self.dirstate_map(py)).copymapgetitem(py, key)
}
def __len__(&self) -> PyResult<usize> {
self.dirstate_map(py).copymaplen(py)
}
def __contains__(&self, key: PyObject) -> PyResult<bool> {
self.dirstate_map(py).copymapcontains(py, key)
}
def get(
&self,
key: PyObject,
default: Option<PyObject> = None
) -> PyResult<Option<PyObject>> {
self.dirstate_map(py).copymapget(py, key, default)
}
def pop(
&self,
key: PyObject,
default: Option<PyObject> = None
) -> PyResult<Option<PyObject>> {
self.dirstate_map(py).copymappop(py, key, default)
}
def __iter__(&self) -> PyResult<CopyMapKeysIterator> {
self.dirstate_map(py).copymapiter(py)
}
// Python's `dict()` builtin works with either a subclass of dict
// or an abstract mapping. Said mapping needs to implement `__getitem__`
// and `keys`.
def keys(&self) -> PyResult<CopyMapKeysIterator> {
self.dirstate_map(py).copymapiter(py)
}
def items(&self) -> PyResult<CopyMapItemsIterator> {
self.dirstate_map(py).copymapitemsiter(py)
}
def iteritems(&self) -> PyResult<CopyMapItemsIterator> {
self.dirstate_map(py).copymapitemsiter(py)
}
def __setitem__(
&self,
key: PyObject,
item: PyObject
) -> PyResult<()> {
self.dirstate_map(py).copymapsetitem(py, key, item)?;
Ok(())
}
def copy(&self) -> PyResult<PyDict> {
self.dirstate_map(py).copymapcopy(py)
}
});
impl CopyMap {
pub fn from_inner(py: Python, dm: DirstateMap) -> PyResult<Self> {
Self::create_instance(py, dm)
}
fn translate_key(
py: Python,
Simon Sapin
dirstate-v2: Make more APIs fallible, returning Result...
r48126 res: Result<(&HgPath, &HgPath), DirstateV2ParseError>,
Raphaël Gomès
rust-dirstate: rust-cpython bridge for dirstatemap...
r42999 ) -> PyResult<Option<PyBytes>> {
Simon Sapin
dirstate-v2: Make more APIs fallible, returning Result...
r48126 let (k, _v) = res.map_err(|e| v2_error(py, e))?;
Ok(Some(PyBytes::new(py, k.as_bytes())))
Raphaël Gomès
rust-dirstate: rust-cpython bridge for dirstatemap...
r42999 }
fn translate_key_value(
py: Python,
Simon Sapin
dirstate-v2: Make more APIs fallible, returning Result...
r48126 res: Result<(&HgPath, &HgPath), DirstateV2ParseError>,
Raphaël Gomès
rust-dirstate: rust-cpython bridge for dirstatemap...
r42999 ) -> PyResult<Option<(PyBytes, PyBytes)>> {
Simon Sapin
dirstate-v2: Make more APIs fallible, returning Result...
r48126 let (k, v) = res.map_err(|e| v2_error(py, e))?;
Raphaël Gomès
rust-hgpath: replace all paths and filenames with HgPath/HgPathBuf...
r43227 Ok(Some((
Raphaël Gomès
rust: do a clippy pass...
r45500 PyBytes::new(py, k.as_bytes()),
PyBytes::new(py, v.as_bytes()),
Raphaël Gomès
rust-hgpath: replace all paths and filenames with HgPath/HgPathBuf...
r43227 )))
Raphaël Gomès
rust-dirstate: rust-cpython bridge for dirstatemap...
r42999 }
}
Yuya Nishihara
rust-cpython: rename py_shared_iterator_impl to py_shared_iterator...
r43159 py_shared_iterator!(
Raphaël Gomès
rust-dirstate: rust-cpython bridge for dirstatemap...
r42999 CopyMapKeysIterator,
Yuya Nishihara
rust-cpython: switch to upstreamed version of PySharedRefCell...
r44703 UnsafePyLeaked<CopyMapIter<'static>>,
Raphaël Gomès
rust-dirstate: rust-cpython bridge for dirstatemap...
r42999 CopyMap::translate_key,
Option<PyBytes>
);
Yuya Nishihara
rust-cpython: rename py_shared_iterator_impl to py_shared_iterator...
r43159 py_shared_iterator!(
Raphaël Gomès
rust-dirstate: rust-cpython bridge for dirstatemap...
r42999 CopyMapItemsIterator,
Yuya Nishihara
rust-cpython: switch to upstreamed version of PySharedRefCell...
r44703 UnsafePyLeaked<CopyMapIter<'static>>,
Raphaël Gomès
rust-dirstate: rust-cpython bridge for dirstatemap...
r42999 CopyMap::translate_key_value,
Option<(PyBytes, PyBytes)>
);