##// END OF EJS Templates
rust: run rfmt on all hg-core/hg-cpython code...
rust: run rfmt on all hg-core/hg-cpython code Differential Revision: https://phab.mercurial-scm.org/D6591

File last commit:

r42760:d26e4a43 default
r42760:d26e4a43 default
Show More
dagops.rs
53 lines | 1.8 KiB | application/rls-services+xml | RustLexer
// dagops.rs
//
// Copyright 2019 Georges Racinet <georges.racinet@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 the `hg::dagops` module provided by the
//! `hg-core` package.
//!
//! From Python, this will be seen as `mercurial.rustext.dagop`
use crate::conversion::{py_set, rev_pyiter_collect};
use cindex::Index;
use cpython::{PyDict, PyModule, PyObject, PyResult, Python};
use exceptions::GraphError;
use hg::dagops;
use hg::Revision;
use std::collections::HashSet;
/// Using the the `index`, return heads out of any Python iterable of Revisions
///
/// This is the Rust counterpart for `mercurial.dagop.headrevs`
pub fn headrevs(
py: Python,
index: PyObject,
revs: PyObject,
) -> PyResult<PyObject> {
let mut as_set: HashSet<Revision> = rev_pyiter_collect(py, &revs)?;
dagops::retain_heads(&Index::new(py, index)?, &mut as_set)
.map_err(|e| GraphError::pynew(py, e))?;
py_set(py, &as_set)
}
/// Create the module, with `__package__` given from parent
pub fn init_module(py: Python, package: &str) -> PyResult<PyModule> {
let dotted_name = &format!("{}.dagop", package);
let m = PyModule::new(py, dotted_name)?;
m.add(py, "__package__", package)?;
m.add(py, "__doc__", "DAG operations - Rust implementation")?;
m.add(
py,
"headrevs",
py_fn!(py, headrevs(index: PyObject, revs: PyObject)),
)?;
let sys = PyModule::import(py, "sys")?;
let sys_modules: PyDict = sys.get(py, "modules")?.extract(py)?;
sys_modules.set_item(py, dotted_name, &m)?;
// Example C code (see pyexpat.c and import.c) will "give away the
// reference", but we won't because it will be consumed once the
// Rust PyObject is dropped.
Ok(m)
}