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annotate rust/hg-cpython/src/revlog.rs @ 44521:cadcc8c20860

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rust-nodemap: also clear Rust data in `clearcaches` Differential Revision: https://phab.mercurial-scm.org/D8161
author Georges Racinet <georges.racinet@octobus.net>
date Wed, 12 Feb 2020 10:53:24 +0100
parents 15febf99a9c6
children 5893706af3de
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1 // revlog.rs
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2 //
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3 // Copyright 2019-2020 Georges Racinet <georges.racinet@octobus.net>
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4 //
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5 // This software may be used and distributed according to the terms of the
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6 // GNU General Public License version 2 or any later version.
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7
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8 use crate::{
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9 cindex,
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10 utils::{node_from_py_bytes, node_from_py_object},
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11 };
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12 use cpython::{
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13 buffer::{Element, PyBuffer},
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14 exc::{IndexError, ValueError},
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15 ObjectProtocol, PyBytes, PyClone, PyDict, PyErr, PyModule, PyObject,
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16 PyResult, PyString, PyTuple, Python, PythonObject, ToPyObject,
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17 };
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18 use hg::{
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19 nodemap::{Block, NodeMapError, NodeTree},
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20 revlog::{nodemap::NodeMap, RevlogIndex},
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21 NodeError, Revision,
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22 };
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23 use std::cell::RefCell;
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24
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25 /// Return a Struct implementing the Graph trait
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26 pub(crate) fn pyindex_to_graph(
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27 py: Python,
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28 index: PyObject,
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29 ) -> PyResult<cindex::Index> {
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30 match index.extract::<MixedIndex>(py) {
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31 Ok(midx) => Ok(midx.clone_cindex(py)),
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32 Err(_) => cindex::Index::new(py, index),
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33 }
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34 }
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35
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36 py_class!(pub class MixedIndex |py| {
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37 data cindex: RefCell<cindex::Index>;
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38 data nt: RefCell<Option<NodeTree>>;
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39 data docket: RefCell<Option<PyObject>>;
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40 // Holds a reference to the mmap'ed persistent nodemap data
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41 data mmap: RefCell<Option<PyBuffer>>;
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42
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43 def __new__(_cls, cindex: PyObject) -> PyResult<MixedIndex> {
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44 Self::new(py, cindex)
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45 }
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46
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47 /// Compatibility layer used for Python consumers needing access to the C index
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48 ///
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49 /// Only use case so far is `scmutil.shortesthexnodeidprefix`,
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50 /// that may need to build a custom `nodetree`, based on a specified revset.
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51 /// With a Rust implementation of the nodemap, we will be able to get rid of
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52 /// this, by exposing our own standalone nodemap class,
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53 /// ready to accept `MixedIndex`.
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54 def get_cindex(&self) -> PyResult<PyObject> {
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55 Ok(self.cindex(py).borrow().inner().clone_ref(py))
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56 }
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57
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58 // Index API involving nodemap, as defined in mercurial/pure/parsers.py
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59
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60 /// Return Revision if found, raises a bare `error.RevlogError`
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61 /// in case of ambiguity, same as C version does
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62 def get_rev(&self, node: PyBytes) -> PyResult<Option<Revision>> {
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63 let opt = self.get_nodetree(py)?.borrow();
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64 let nt = opt.as_ref().unwrap();
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65 let idx = &*self.cindex(py).borrow();
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66 let node = node_from_py_bytes(py, &node)?;
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67 nt.find_bin(idx, (&node).into()).map_err(|e| nodemap_error(py, e))
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68 }
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69
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70 /// same as `get_rev()` but raises a bare `error.RevlogError` if node
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71 /// is not found.
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72 ///
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73 /// No need to repeat `node` in the exception, `mercurial/revlog.py`
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74 /// will catch and rewrap with it
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75 def rev(&self, node: PyBytes) -> PyResult<Revision> {
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76 self.get_rev(py, node)?.ok_or_else(|| revlog_error(py))
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77 }
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78
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79 /// return True if the node exist in the index
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80 def has_node(&self, node: PyBytes) -> PyResult<bool> {
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81 self.get_rev(py, node).map(|opt| opt.is_some())
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82 }
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83
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84 /// find length of shortest hex nodeid of a binary ID
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85 def shortest(&self, node: PyBytes) -> PyResult<usize> {
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86 let opt = self.get_nodetree(py)?.borrow();
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87 let nt = opt.as_ref().unwrap();
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88 let idx = &*self.cindex(py).borrow();
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89 match nt.unique_prefix_len_node(idx, &node_from_py_bytes(py, &node)?)
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90 {
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91 Ok(Some(l)) => Ok(l),
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92 Ok(None) => Err(revlog_error(py)),
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93 Err(e) => Err(nodemap_error(py, e)),
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94 }
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95 }
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96
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97 def partialmatch(&self, node: PyObject) -> PyResult<Option<PyBytes>> {
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98 let opt = self.get_nodetree(py)?.borrow();
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99 let nt = opt.as_ref().unwrap();
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100 let idx = &*self.cindex(py).borrow();
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101
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102 let node_as_string = if cfg!(feature = "python3-sys") {
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103 node.cast_as::<PyString>(py)?.to_string(py)?.to_string()
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104 }
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105 else {
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106 let node = node.extract::<PyBytes>(py)?;
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107 String::from_utf8_lossy(node.data(py)).to_string()
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108 };
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109
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110 nt.find_hex(idx, &node_as_string)
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111 // TODO make an inner API returning the node directly
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112 .map(|opt| opt.map(
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113 |rev| PyBytes::new(py, idx.node(rev).unwrap().as_bytes())))
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114 .map_err(|e| nodemap_error(py, e))
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115
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116 }
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117
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118 /// append an index entry
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119 def append(&self, tup: PyTuple) -> PyResult<PyObject> {
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120 if tup.len(py) < 8 {
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121 // this is better than the panic promised by tup.get_item()
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122 return Err(
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123 PyErr::new::<IndexError, _>(py, "tuple index out of range"))
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124 }
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125 let node_bytes = tup.get_item(py, 7).extract(py)?;
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126 let node = node_from_py_object(py, &node_bytes)?;
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127
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128 let mut idx = self.cindex(py).borrow_mut();
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129 let rev = idx.len() as Revision;
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130
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131 idx.append(py, tup)?;
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132 self.get_nodetree(py)?.borrow_mut().as_mut().unwrap()
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133 .insert(&*idx, &node, rev)
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134 .map_err(|e| nodemap_error(py, e))?;
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135 Ok(py.None())
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136 }
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137
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138 def __delitem__(&self, key: PyObject) -> PyResult<()> {
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139 // __delitem__ is both for `del idx[r]` and `del idx[r1:r2]`
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140 self.cindex(py).borrow().inner().del_item(py, key)?;
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141 let mut opt = self.get_nodetree(py)?.borrow_mut();
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142 let mut nt = opt.as_mut().unwrap();
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143 nt.invalidate_all();
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144 self.fill_nodemap(py, &mut nt)?;
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145 Ok(())
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146 }
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147
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148 //
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149 // Reforwarded C index API
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150 //
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151
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152 // index_methods (tp_methods). Same ordering as in revlog.c
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153
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154 /// return the gca set of the given revs
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155 def ancestors(&self, *args, **kw) -> PyResult<PyObject> {
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156 self.call_cindex(py, "ancestors", args, kw)
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157 }
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158
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159 /// return the heads of the common ancestors of the given revs
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160 def commonancestorsheads(&self, *args, **kw) -> PyResult<PyObject> {
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161 self.call_cindex(py, "commonancestorsheads", args, kw)
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162 }
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163
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164 /// Clear the index caches and inner py_class data.
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165 /// It is Python's responsibility to call `update_nodemap_data` again.
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166 def clearcaches(&self, *args, **kw) -> PyResult<PyObject> {
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167 self.nt(py).borrow_mut().take();
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168 self.docket(py).borrow_mut().take();
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169 self.mmap(py).borrow_mut().take();
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170 self.call_cindex(py, "clearcaches", args, kw)
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171 }
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172
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173 /// get an index entry
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174 def get(&self, *args, **kw) -> PyResult<PyObject> {
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175 self.call_cindex(py, "get", args, kw)
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176 }
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177
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178 /// compute phases
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179 def computephasesmapsets(&self, *args, **kw) -> PyResult<PyObject> {
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180 self.call_cindex(py, "computephasesmapsets", args, kw)
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181 }
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182
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183 /// reachableroots
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184 def reachableroots2(&self, *args, **kw) -> PyResult<PyObject> {
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185 self.call_cindex(py, "reachableroots2", args, kw)
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186 }
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187
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188 /// get head revisions
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189 def headrevs(&self, *args, **kw) -> PyResult<PyObject> {
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190 self.call_cindex(py, "headrevs", args, kw)
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191 }
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192
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193 /// get filtered head revisions
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194 def headrevsfiltered(&self, *args, **kw) -> PyResult<PyObject> {
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195 self.call_cindex(py, "headrevsfiltered", args, kw)
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196 }
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197
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198 /// True if the object is a snapshot
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199 def issnapshot(&self, *args, **kw) -> PyResult<PyObject> {
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200 self.call_cindex(py, "issnapshot", args, kw)
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201 }
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202
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203 /// Gather snapshot data in a cache dict
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204 def findsnapshots(&self, *args, **kw) -> PyResult<PyObject> {
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205 self.call_cindex(py, "findsnapshots", args, kw)
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206 }
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207
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208 /// determine revisions with deltas to reconstruct fulltext
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209 def deltachain(&self, *args, **kw) -> PyResult<PyObject> {
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210 self.call_cindex(py, "deltachain", args, kw)
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211 }
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212
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213 /// slice planned chunk read to reach a density threshold
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214 def slicechunktodensity(&self, *args, **kw) -> PyResult<PyObject> {
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215 self.call_cindex(py, "slicechunktodensity", args, kw)
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216 }
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217
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218 /// stats for the index
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219 def stats(&self, *args, **kw) -> PyResult<PyObject> {
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220 self.call_cindex(py, "stats", args, kw)
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221 }
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222
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223 // index_sequence_methods and index_mapping_methods.
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224 //
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225 // Since we call back through the high level Python API,
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226 // there's no point making a distinction between index_get
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227 // and index_getitem.
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228
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229 def __len__(&self) -> PyResult<usize> {
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230 self.cindex(py).borrow().inner().len(py)
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231 }
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232
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233 def __getitem__(&self, key: PyObject) -> PyResult<PyObject> {
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234 // this conversion seems needless, but that's actually because
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235 // `index_getitem` does not handle conversion from PyLong,
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236 // which expressions such as [e for e in index] internally use.
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237 // Note that we don't seem to have a direct way to call
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238 // PySequence_GetItem (does the job), which would possibly be better
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239 // for performance
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240 let key = match key.extract::<Revision>(py) {
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241 Ok(rev) => rev.to_py_object(py).into_object(),
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242 Err(_) => key,
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243 };
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244 self.cindex(py).borrow().inner().get_item(py, key)
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245 }
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246
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247 def __setitem__(&self, key: PyObject, value: PyObject) -> PyResult<()> {
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248 self.cindex(py).borrow().inner().set_item(py, key, value)
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249 }
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250
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251 def __contains__(&self, item: PyObject) -> PyResult<bool> {
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252 // ObjectProtocol does not seem to provide contains(), so
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253 // this is an equivalent implementation of the index_contains()
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254 // defined in revlog.c
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255 let cindex = self.cindex(py).borrow();
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256 match item.extract::<Revision>(py) {
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257 Ok(rev) => {
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258 Ok(rev >= -1 && rev < cindex.inner().len(py)? as Revision)
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259 }
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260 Err(_) => {
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261 cindex.inner().call_method(
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262 py,
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263 "has_node",
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264 PyTuple::new(py, &[item]),
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265 None)?
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266 .extract(py)
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267 }
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268 }
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269 }
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270
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271 def nodemap_data_all(&self) -> PyResult<PyBytes> {
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272 self.inner_nodemap_data_all(py)
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273 }
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274
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275 def nodemap_data_incremental(&self) -> PyResult<PyObject> {
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276 self.inner_nodemap_data_incremental(py)
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277 }
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278 def update_nodemap_data(
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279 &self,
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280 docket: PyObject,
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281 nm_data: PyObject
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282 ) -> PyResult<PyObject> {
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283 self.inner_update_nodemap_data(py, docket, nm_data)
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284 }
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285
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286
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287 });
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288
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289 impl MixedIndex {
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290 fn new(py: Python, cindex: PyObject) -> PyResult<MixedIndex> {
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291 Self::create_instance(
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292 py,
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293 RefCell::new(cindex::Index::new(py, cindex)?),
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294 RefCell::new(None),
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295 RefCell::new(None),
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296 RefCell::new(None),
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297 )
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298 }
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299
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300 /// This is scaffolding at this point, but it could also become
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301 /// a way to start a persistent nodemap or perform a
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302 /// vacuum / repack operation
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303 fn fill_nodemap(
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304 &self,
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305 py: Python,
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306 nt: &mut NodeTree,
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307 ) -> PyResult<PyObject> {
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308 let index = self.cindex(py).borrow();
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309 for r in 0..index.len() {
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310 let rev = r as Revision;
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311 // in this case node() won't ever return None
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312 nt.insert(&*index, index.node(rev).unwrap(), rev)
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313 .map_err(|e| nodemap_error(py, e))?
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314 }
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315 Ok(py.None())
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316 }
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317
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318 fn get_nodetree<'a>(
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319 &'a self,
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320 py: Python<'a>,
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321 ) -> PyResult<&'a RefCell<Option<NodeTree>>> {
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322 if self.nt(py).borrow().is_none() {
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323 let readonly = Box::new(Vec::new());
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324 let mut nt = NodeTree::load_bytes(readonly, 0);
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325 self.fill_nodemap(py, &mut nt)?;
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326 self.nt(py).borrow_mut().replace(nt);
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327 }
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328 Ok(self.nt(py))
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329 }
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330
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331 /// forward a method call to the underlying C index
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332 fn call_cindex(
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333 &self,
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334 py: Python,
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335 name: &str,
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336 args: &PyTuple,
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337 kwargs: Option<&PyDict>,
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338 ) -> PyResult<PyObject> {
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339 self.cindex(py)
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340 .borrow()
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341 .inner()
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342 .call_method(py, name, args, kwargs)
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343 }
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344
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345 pub fn clone_cindex(&self, py: Python) -> cindex::Index {
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346 self.cindex(py).borrow().clone_ref(py)
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347 }
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348
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349 /// Returns the full nodemap bytes to be written as-is to disk
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350 fn inner_nodemap_data_all(&self, py: Python) -> PyResult<PyBytes> {
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351 let nodemap = self.get_nodetree(py)?.borrow_mut().take().unwrap();
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352 let (readonly, bytes) = nodemap.into_readonly_and_added_bytes();
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353
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354 // If there's anything readonly, we need to build the data again from
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355 // scratch
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356 let bytes = if readonly.len() > 0 {
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357 let mut nt = NodeTree::load_bytes(Box::new(vec![]), 0);
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parents: 44517
diff changeset
358 self.fill_nodemap(py, &mut nt)?;
b581231ae9d1 rust-nodemap: add binding for `nodemap_data_all`
Georges Racinet <georges.racinet@octobus.net>
parents: 44517
diff changeset
359
b581231ae9d1 rust-nodemap: add binding for `nodemap_data_all`
Georges Racinet <georges.racinet@octobus.net>
parents: 44517
diff changeset
360 let (readonly, bytes) = nt.into_readonly_and_added_bytes();
b581231ae9d1 rust-nodemap: add binding for `nodemap_data_all`
Georges Racinet <georges.racinet@octobus.net>
parents: 44517
diff changeset
361 assert_eq!(readonly.len(), 0);
b581231ae9d1 rust-nodemap: add binding for `nodemap_data_all`
Georges Racinet <georges.racinet@octobus.net>
parents: 44517
diff changeset
362
b581231ae9d1 rust-nodemap: add binding for `nodemap_data_all`
Georges Racinet <georges.racinet@octobus.net>
parents: 44517
diff changeset
363 bytes
b581231ae9d1 rust-nodemap: add binding for `nodemap_data_all`
Georges Racinet <georges.racinet@octobus.net>
parents: 44517
diff changeset
364 } else {
b581231ae9d1 rust-nodemap: add binding for `nodemap_data_all`
Georges Racinet <georges.racinet@octobus.net>
parents: 44517
diff changeset
365 bytes
b581231ae9d1 rust-nodemap: add binding for `nodemap_data_all`
Georges Racinet <georges.racinet@octobus.net>
parents: 44517
diff changeset
366 };
b581231ae9d1 rust-nodemap: add binding for `nodemap_data_all`
Georges Racinet <georges.racinet@octobus.net>
parents: 44517
diff changeset
367
b581231ae9d1 rust-nodemap: add binding for `nodemap_data_all`
Georges Racinet <georges.racinet@octobus.net>
parents: 44517
diff changeset
368 let bytes = PyBytes::new(py, &bytes);
b581231ae9d1 rust-nodemap: add binding for `nodemap_data_all`
Georges Racinet <georges.racinet@octobus.net>
parents: 44517
diff changeset
369 Ok(bytes)
b581231ae9d1 rust-nodemap: add binding for `nodemap_data_all`
Georges Racinet <georges.racinet@octobus.net>
parents: 44517
diff changeset
370 }
44519
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
371
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
372 /// Returns the last saved docket along with the size of any changed data
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
373 /// (in number of blocks), and said data as bytes.
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
374 fn inner_nodemap_data_incremental(
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
375 &self,
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
376 py: Python,
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
377 ) -> PyResult<PyObject> {
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
378 let docket = self.docket(py).borrow();
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
379 let docket = match docket.as_ref() {
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
380 Some(d) => d,
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
381 None => return Ok(py.None()),
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
382 };
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
383
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
384 let node_tree = self.get_nodetree(py)?.borrow_mut().take().unwrap();
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
385 let masked_blocks = node_tree.masked_readonly_blocks();
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
386 let (_, data) = node_tree.into_readonly_and_added_bytes();
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
387 let changed = masked_blocks * std::mem::size_of::<Block>();
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
388
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
389 Ok((docket, changed, PyBytes::new(py, &data))
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
390 .to_py_object(py)
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
391 .into_object())
5bbf887275b0 rust-nodemap: add binding for `nodemap_data_incremental`
Georges Racinet <georges.racinet@octobus.net>
parents: 44518
diff changeset
392 }
44520
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
393
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
394 /// Update the nodemap from the new (mmaped) data.
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
395 /// The docket is kept as a reference for later incremental calls.
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
396 fn inner_update_nodemap_data(
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
397 &self,
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
398 py: Python,
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
399 docket: PyObject,
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
400 nm_data: PyObject,
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
401 ) -> PyResult<PyObject> {
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
402 let buf = PyBuffer::get(py, &nm_data)?;
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
403 let len = buf.item_count();
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
404
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
405 // Build a slice from the mmap'ed buffer data
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
406 let cbuf = buf.buf_ptr();
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
407 let bytes = if std::mem::size_of::<u8>() == buf.item_size()
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
408 && buf.is_c_contiguous()
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
409 && u8::is_compatible_format(buf.format())
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
410 {
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
411 unsafe { std::slice::from_raw_parts(cbuf as *const u8, len) }
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
412 } else {
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
413 return Err(PyErr::new::<ValueError, _>(
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
414 py,
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
415 "Nodemap data buffer has an invalid memory representation"
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
416 .to_string(),
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
417 ));
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
418 };
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
419
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
420 // Keep a reference to the mmap'ed buffer, otherwise we get a dangling
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
421 // pointer.
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
422 self.mmap(py).borrow_mut().replace(buf);
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
423
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
424 let mut nt = NodeTree::load_bytes(Box::new(bytes), len);
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
425
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
426 let data_tip =
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
427 docket.getattr(py, "tip_rev")?.extract::<Revision>(py)?;
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
428 self.docket(py).borrow_mut().replace(docket.clone_ref(py));
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
429 let idx = self.cindex(py).borrow();
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
430 let current_tip = idx.len();
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
431
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
432 for r in (data_tip + 1)..current_tip as Revision {
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
433 let rev = r as Revision;
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
434 // in this case node() won't ever return None
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
435 nt.insert(&*idx, idx.node(rev).unwrap(), rev)
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
436 .map_err(|e| nodemap_error(py, e))?
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
437 }
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
438
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
439 *self.nt(py).borrow_mut() = Some(nt);
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
440
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
441 Ok(py.None())
15febf99a9c6 rust-nodemap: add binding to `nodemap_update_data`
Georges Racinet <georges.racinet@octobus.net>
parents: 44519
diff changeset
442 }
43966
b69d5f3a41d0 rust-index: add a struct wrapping the C index
Georges Racinet <georges.racinet@octobus.net>
parents: 43951
diff changeset
443 }
b69d5f3a41d0 rust-index: add a struct wrapping the C index
Georges Racinet <georges.racinet@octobus.net>
parents: 43951
diff changeset
444
44516
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
445 fn revlog_error(py: Python) -> PyErr {
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
446 match py
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
447 .import("mercurial.error")
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
448 .and_then(|m| m.get(py, "RevlogError"))
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
449 {
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
450 Err(e) => e,
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
451 Ok(cls) => PyErr::from_instance(py, cls),
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
452 }
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
453 }
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
454
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
455 fn rev_not_in_index(py: Python, rev: Revision) -> PyErr {
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
456 PyErr::new::<ValueError, _>(
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
457 py,
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
458 format!(
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
459 "Inconsistency: Revision {} found in nodemap \
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
460 is not in revlog index",
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
461 rev
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
462 ),
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
463 )
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
464 }
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
465
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
466 /// Standard treatment of NodeMapError
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
467 fn nodemap_error(py: Python, err: NodeMapError) -> PyErr {
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
468 match err {
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
469 NodeMapError::MultipleResults => revlog_error(py),
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
470 NodeMapError::RevisionNotInIndex(r) => rev_not_in_index(py, r),
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
471 NodeMapError::InvalidNodePrefix(s) => invalid_node_prefix(py, &s),
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
472 }
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
473 }
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
474
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
475 fn invalid_node_prefix(py: Python, ne: &NodeError) -> PyErr {
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
476 PyErr::new::<ValueError, _>(
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
477 py,
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
478 format!("Invalid node or prefix: {:?}", ne),
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
479 )
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
480 }
26dd35ac59b8 rust-nodemap: add utils for propagating errors
Georges Racinet <georges.racinet@octobus.net>
parents: 44513
diff changeset
481
43966
b69d5f3a41d0 rust-index: add a struct wrapping the C index
Georges Racinet <georges.racinet@octobus.net>
parents: 43951
diff changeset
482 /// Create the module, with __package__ given from parent
b69d5f3a41d0 rust-index: add a struct wrapping the C index
Georges Racinet <georges.racinet@octobus.net>
parents: 43951
diff changeset
483 pub fn init_module(py: Python, package: &str) -> PyResult<PyModule> {
b69d5f3a41d0 rust-index: add a struct wrapping the C index
Georges Racinet <georges.racinet@octobus.net>
parents: 43951
diff changeset
484 let dotted_name = &format!("{}.revlog", package);
b69d5f3a41d0 rust-index: add a struct wrapping the C index
Georges Racinet <georges.racinet@octobus.net>
parents: 43951
diff changeset
485 let m = PyModule::new(py, dotted_name)?;
b69d5f3a41d0 rust-index: add a struct wrapping the C index
Georges Racinet <georges.racinet@octobus.net>
parents: 43951
diff changeset
486 m.add(py, "__package__", package)?;
b69d5f3a41d0 rust-index: add a struct wrapping the C index
Georges Racinet <georges.racinet@octobus.net>
parents: 43951
diff changeset
487 m.add(py, "__doc__", "RevLog - Rust implementations")?;
b69d5f3a41d0 rust-index: add a struct wrapping the C index
Georges Racinet <georges.racinet@octobus.net>
parents: 43951
diff changeset
488
b69d5f3a41d0 rust-index: add a struct wrapping the C index
Georges Racinet <georges.racinet@octobus.net>
parents: 43951
diff changeset
489 m.add_class::<MixedIndex>(py)?;
b69d5f3a41d0 rust-index: add a struct wrapping the C index
Georges Racinet <georges.racinet@octobus.net>
parents: 43951
diff changeset
490
b69d5f3a41d0 rust-index: add a struct wrapping the C index
Georges Racinet <georges.racinet@octobus.net>
parents: 43951
diff changeset
491 let sys = PyModule::import(py, "sys")?;
b69d5f3a41d0 rust-index: add a struct wrapping the C index
Georges Racinet <georges.racinet@octobus.net>
parents: 43951
diff changeset
492 let sys_modules: PyDict = sys.get(py, "modules")?.extract(py)?;
b69d5f3a41d0 rust-index: add a struct wrapping the C index
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parents: 43951
diff changeset
493 sys_modules.set_item(py, dotted_name, &m)?;
b69d5f3a41d0 rust-index: add a struct wrapping the C index
Georges Racinet <georges.racinet@octobus.net>
parents: 43951
diff changeset
494
b69d5f3a41d0 rust-index: add a struct wrapping the C index
Georges Racinet <georges.racinet@octobus.net>
parents: 43951
diff changeset
495 Ok(m)
b69d5f3a41d0 rust-index: add a struct wrapping the C index
Georges Racinet <georges.racinet@octobus.net>
parents: 43951
diff changeset
496 }