Mercurial > hg
annotate rust/hg-core/src/dirstate_tree/dirstate_map.rs @ 47334:18b3060fe598
dirstate-v2: Add a zero-size error type for dirstate v2 parse errors
This error should only happen if Mercurial is buggy or the file is corrupted.
It indicates for example that:
* A part of the file refers to another part, and the byte offset or item count
would cause reading out of bounds, beyond the end of the file.
* The byte for an entry state has an invalid value
When parsing becomes lazy, many more functions will return a `Result` with
this error. Making it zero-size reduces the work that the `?` operator needs
to do to pass around the error value.
Differential Revision: https://phab.mercurial-scm.org/D10748
author | Simon Sapin <simon.sapin@octobus.net> |
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date | Wed, 19 May 2021 13:15:00 +0200 |
parents | 69530e5d4fe5 |
children | ed1583a845d2 |
rev | line source |
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1 use bytes_cast::BytesCast; |
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2 use micro_timer::timed; |
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3 use std::borrow::Cow; |
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4 use std::convert::TryInto; |
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5 use std::path::PathBuf; |
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6 |
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7 use super::on_disk; |
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8 use super::path_with_basename::WithBasename; |
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9 use crate::dirstate::parsers::pack_entry; |
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10 use crate::dirstate::parsers::packed_entry_size; |
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11 use crate::dirstate::parsers::parse_dirstate_entries; |
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12 use crate::dirstate::parsers::Timestamp; |
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13 use crate::matchers::Matcher; |
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14 use crate::utils::hg_path::{HgPath, HgPathBuf}; |
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15 use crate::CopyMapIter; |
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16 use crate::DirstateEntry; |
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17 use crate::DirstateError; |
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18 use crate::DirstateMapError; |
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19 use crate::DirstateParents; |
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20 use crate::DirstateStatus; |
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21 use crate::EntryState; |
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22 use crate::FastHashMap; |
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23 use crate::PatternFileWarning; |
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24 use crate::StateMapIter; |
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25 use crate::StatusError; |
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26 use crate::StatusOptions; |
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27 |
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28 pub struct DirstateMap<'on_disk> { |
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29 /// Contents of the `.hg/dirstate` file |
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30 pub(super) on_disk: &'on_disk [u8], |
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31 |
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32 pub(super) root: ChildNodes<'on_disk>, |
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33 |
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34 /// Number of nodes anywhere in the tree that have `.entry.is_some()`. |
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35 pub(super) nodes_with_entry_count: u32, |
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36 |
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37 /// Number of nodes anywhere in the tree that have |
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38 /// `.copy_source.is_some()`. |
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39 pub(super) nodes_with_copy_source_count: u32, |
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40 } |
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41 |
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42 /// Using a plain `HgPathBuf` of the full path from the repository root as a |
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43 /// map key would also work: all paths in a given map have the same parent |
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44 /// path, so comparing full paths gives the same result as comparing base |
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45 /// names. However `HashMap` would waste time always re-hashing the same |
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46 /// string prefix. |
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47 pub(super) type NodeKey<'on_disk> = WithBasename<Cow<'on_disk, HgPath>>; |
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48 |
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49 pub(super) enum ChildNodes<'on_disk> { |
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50 InMemory(FastHashMap<NodeKey<'on_disk>, Node<'on_disk>>), |
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51 } |
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52 |
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53 pub(super) enum ChildNodesRef<'tree, 'on_disk> { |
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54 InMemory(&'tree FastHashMap<NodeKey<'on_disk>, Node<'on_disk>>), |
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55 } |
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56 |
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57 pub(super) enum NodeRef<'tree, 'on_disk> { |
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58 InMemory(&'tree NodeKey<'on_disk>, &'tree Node<'on_disk>), |
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59 } |
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60 |
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61 impl Default for ChildNodes<'_> { |
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62 fn default() -> Self { |
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63 ChildNodes::InMemory(Default::default()) |
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64 } |
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65 } |
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66 |
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67 impl<'on_disk> ChildNodes<'on_disk> { |
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68 pub(super) fn as_ref<'tree>( |
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69 &'tree self, |
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70 ) -> ChildNodesRef<'tree, 'on_disk> { |
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71 match self { |
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72 ChildNodes::InMemory(nodes) => ChildNodesRef::InMemory(nodes), |
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73 } |
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74 } |
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75 |
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76 pub(super) fn is_empty(&self) -> bool { |
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77 match self { |
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78 ChildNodes::InMemory(nodes) => nodes.is_empty(), |
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79 } |
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80 } |
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81 |
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82 pub(super) fn make_mut( |
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83 &mut self, |
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84 ) -> &mut FastHashMap<NodeKey<'on_disk>, Node<'on_disk>> { |
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85 match self { |
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86 ChildNodes::InMemory(nodes) => nodes, |
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87 } |
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88 } |
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89 } |
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90 |
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91 impl<'tree, 'on_disk> ChildNodesRef<'tree, 'on_disk> { |
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92 pub(super) fn get( |
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93 &self, |
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94 base_name: &HgPath, |
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95 ) -> Option<NodeRef<'tree, 'on_disk>> { |
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96 match self { |
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97 ChildNodesRef::InMemory(nodes) => nodes |
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98 .get_key_value(base_name) |
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99 .map(|(k, v)| NodeRef::InMemory(k, v)), |
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100 } |
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101 } |
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102 |
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103 /// Iterate in undefined order |
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104 pub(super) fn iter( |
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105 &self, |
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106 ) -> impl Iterator<Item = NodeRef<'tree, 'on_disk>> { |
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107 match self { |
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108 ChildNodesRef::InMemory(nodes) => { |
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109 nodes.iter().map(|(k, v)| NodeRef::InMemory(k, v)) |
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110 } |
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111 } |
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112 } |
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113 |
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114 /// Iterate in parallel in undefined order |
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115 pub(super) fn par_iter( |
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116 &self, |
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117 ) -> impl rayon::iter::ParallelIterator<Item = NodeRef<'tree, 'on_disk>> |
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118 { |
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119 use rayon::prelude::*; |
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120 match self { |
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121 ChildNodesRef::InMemory(nodes) => { |
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122 nodes.par_iter().map(|(k, v)| NodeRef::InMemory(k, v)) |
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123 } |
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124 } |
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125 } |
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126 |
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127 pub(super) fn sorted(&self) -> Vec<NodeRef<'tree, 'on_disk>> { |
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128 match self { |
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129 ChildNodesRef::InMemory(nodes) => { |
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130 let mut vec: Vec<_> = nodes |
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131 .iter() |
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132 .map(|(k, v)| NodeRef::InMemory(k, v)) |
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133 .collect(); |
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134 // `sort_unstable_by_key` doesn’t allow keys borrowing from the |
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135 // value: https://github.com/rust-lang/rust/issues/34162 |
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136 vec.sort_unstable_by(|a, b| a.base_name().cmp(b.base_name())); |
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137 vec |
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138 } |
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139 } |
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140 } |
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141 } |
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142 |
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143 impl<'tree, 'on_disk> NodeRef<'tree, 'on_disk> { |
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144 pub(super) fn full_path(&self) -> &'tree HgPath { |
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145 match self { |
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146 NodeRef::InMemory(path, _node) => path.full_path(), |
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147 } |
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148 } |
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149 |
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150 /// Returns a `Cow` that can borrow 'on_disk but is detached from 'tree |
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151 pub(super) fn full_path_cow(&self) -> Cow<'on_disk, HgPath> { |
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152 match self { |
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153 NodeRef::InMemory(path, _node) => path.full_path().clone(), |
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154 } |
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155 } |
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156 |
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157 pub(super) fn base_name(&self) -> &'tree HgPath { |
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158 match self { |
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159 NodeRef::InMemory(path, _node) => path.base_name(), |
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160 } |
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161 } |
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162 |
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163 pub(super) fn children(&self) -> ChildNodesRef<'tree, 'on_disk> { |
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164 match self { |
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165 NodeRef::InMemory(_path, node) => node.children.as_ref(), |
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166 } |
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167 } |
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168 |
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169 pub(super) fn copy_source(&self) -> Option<&'tree HgPath> { |
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170 match self { |
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171 NodeRef::InMemory(_path, node) => { |
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172 node.copy_source.as_ref().map(|s| &**s) |
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173 } |
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174 } |
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175 } |
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176 |
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177 pub(super) fn has_entry(&self) -> bool { |
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178 match self { |
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179 NodeRef::InMemory(_path, node) => node.entry.is_some(), |
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180 } |
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181 } |
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182 |
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183 pub(super) fn entry(&self) -> Option<DirstateEntry> { |
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184 match self { |
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185 NodeRef::InMemory(_path, node) => node.entry, |
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186 } |
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187 } |
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188 pub(super) fn state(&self) -> Option<EntryState> { |
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189 match self { |
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190 NodeRef::InMemory(_path, node) => { |
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191 node.entry.as_ref().map(|entry| entry.state) |
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192 } |
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193 } |
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194 } |
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195 |
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196 pub(super) fn tracked_descendants_count(&self) -> u32 { |
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197 match self { |
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198 NodeRef::InMemory(_path, node) => node.tracked_descendants_count, |
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199 } |
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200 } |
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201 } |
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202 |
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203 /// Represents a file or a directory |
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204 #[derive(Default)] |
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205 pub(super) struct Node<'on_disk> { |
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206 /// `None` for directories |
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207 pub(super) entry: Option<DirstateEntry>, |
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208 |
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209 pub(super) copy_source: Option<Cow<'on_disk, HgPath>>, |
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210 |
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211 pub(super) children: ChildNodes<'on_disk>, |
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212 |
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213 /// How many (non-inclusive) descendants of this node are tracked files |
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214 pub(super) tracked_descendants_count: u32, |
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215 } |
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216 |
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217 impl<'on_disk> DirstateMap<'on_disk> { |
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218 pub(super) fn empty(on_disk: &'on_disk [u8]) -> Self { |
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219 Self { |
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220 on_disk, |
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221 root: ChildNodes::default(), |
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222 nodes_with_entry_count: 0, |
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223 nodes_with_copy_source_count: 0, |
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224 } |
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225 } |
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226 |
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227 #[timed] |
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228 pub fn new_v2( |
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229 on_disk: &'on_disk [u8], |
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230 ) -> Result<(Self, Option<DirstateParents>), DirstateError> { |
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231 Ok(on_disk::read(on_disk)?) |
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232 } |
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233 |
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234 #[timed] |
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235 pub fn new_v1( |
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236 on_disk: &'on_disk [u8], |
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237 ) -> Result<(Self, Option<DirstateParents>), DirstateError> { |
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238 let mut map = Self::empty(on_disk); |
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239 if map.on_disk.is_empty() { |
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240 return Ok((map, None)); |
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241 } |
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242 |
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243 let parents = parse_dirstate_entries( |
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244 map.on_disk, |
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245 |path, entry, copy_source| { |
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246 let tracked = entry.state.is_tracked(); |
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247 let node = Self::get_or_insert_node( |
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248 &mut map.root, |
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249 path, |
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250 WithBasename::to_cow_borrowed, |
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251 |ancestor| { |
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252 if tracked { |
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253 ancestor.tracked_descendants_count += 1 |
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254 } |
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255 }, |
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256 ); |
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257 assert!( |
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258 node.entry.is_none(), |
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259 "duplicate dirstate entry in read" |
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260 ); |
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261 assert!( |
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262 node.copy_source.is_none(), |
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263 "duplicate dirstate entry in read" |
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264 ); |
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265 node.entry = Some(*entry); |
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266 node.copy_source = copy_source.map(Cow::Borrowed); |
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267 map.nodes_with_entry_count += 1; |
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268 if copy_source.is_some() { |
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269 map.nodes_with_copy_source_count += 1 |
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270 } |
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271 }, |
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272 )?; |
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273 let parents = Some(parents.clone()); |
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274 |
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275 Ok((map, parents)) |
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276 } |
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277 |
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278 fn get_node<'tree>( |
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279 &'tree self, |
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280 path: &HgPath, |
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281 ) -> Option<NodeRef<'tree, 'on_disk>> { |
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282 let mut children = self.root.as_ref(); |
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283 let mut components = path.components(); |
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284 let mut component = |
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285 components.next().expect("expected at least one components"); |
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286 loop { |
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287 let child = children.get(component)?; |
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288 if let Some(next_component) = components.next() { |
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289 component = next_component; |
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290 children = child.children(); |
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291 } else { |
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292 return Some(child); |
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293 } |
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294 } |
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295 } |
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296 |
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297 /// Returns a mutable reference to the node at `path` if it exists |
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298 /// |
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299 /// This takes `root` instead of `&mut self` so that callers can mutate |
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300 /// other fields while the returned borrow is still valid |
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301 fn get_node_mut<'tree>( |
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302 root: &'tree mut ChildNodes<'on_disk>, |
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303 path: &HgPath, |
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304 ) -> Option<&'tree mut Node<'on_disk>> { |
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305 let mut children = root; |
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306 let mut components = path.components(); |
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307 let mut component = |
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308 components.next().expect("expected at least one components"); |
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309 loop { |
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310 let child = children.make_mut().get_mut(component)?; |
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311 if let Some(next_component) = components.next() { |
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312 component = next_component; |
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313 children = &mut child.children; |
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314 } else { |
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315 return Some(child); |
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316 } |
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317 } |
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318 } |
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319 |
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320 fn get_or_insert_node<'tree, 'path>( |
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321 root: &'tree mut ChildNodes<'on_disk>, |
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322 path: &'path HgPath, |
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323 to_cow: impl Fn( |
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324 WithBasename<&'path HgPath>, |
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325 ) -> WithBasename<Cow<'on_disk, HgPath>>, |
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326 mut each_ancestor: impl FnMut(&mut Node), |
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327 ) -> &'tree mut Node<'on_disk> { |
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328 let mut child_nodes = root; |
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329 let mut inclusive_ancestor_paths = |
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330 WithBasename::inclusive_ancestors_of(path); |
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331 let mut ancestor_path = inclusive_ancestor_paths |
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332 .next() |
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333 .expect("expected at least one inclusive ancestor"); |
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334 loop { |
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335 // TODO: can we avoid allocating an owned key in cases where the |
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336 // map already contains that key, without introducing double |
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337 // lookup? |
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338 let child_node = child_nodes |
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339 .make_mut() |
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340 .entry(to_cow(ancestor_path)) |
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341 .or_default(); |
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342 if let Some(next) = inclusive_ancestor_paths.next() { |
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343 each_ancestor(child_node); |
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344 ancestor_path = next; |
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345 child_nodes = &mut child_node.children; |
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346 } else { |
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347 return child_node; |
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348 } |
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349 } |
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350 } |
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351 |
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352 fn add_or_remove_file( |
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353 &mut self, |
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354 path: &HgPath, |
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355 old_state: EntryState, |
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356 new_entry: DirstateEntry, |
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357 ) { |
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358 let tracked_count_increment = |
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359 match (old_state.is_tracked(), new_entry.state.is_tracked()) { |
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360 (false, true) => 1, |
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361 (true, false) => -1, |
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362 _ => 0, |
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363 }; |
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364 |
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365 let node = Self::get_or_insert_node( |
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366 &mut self.root, |
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367 path, |
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368 WithBasename::to_cow_owned, |
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369 |ancestor| { |
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370 // We can’t use `+= increment` because the counter is unsigned, |
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371 // and we want debug builds to detect accidental underflow |
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372 // through zero |
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373 match tracked_count_increment { |
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374 1 => ancestor.tracked_descendants_count += 1, |
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375 -1 => ancestor.tracked_descendants_count -= 1, |
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376 _ => {} |
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377 } |
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378 }, |
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379 ); |
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380 if node.entry.is_none() { |
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381 self.nodes_with_entry_count += 1 |
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382 } |
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383 node.entry = Some(new_entry) |
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384 } |
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385 |
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386 fn iter_nodes<'tree>( |
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387 &'tree self, |
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388 ) -> impl Iterator<Item = NodeRef<'tree, 'on_disk>> + 'tree { |
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389 // Depth first tree traversal. |
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390 // |
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391 // If we could afford internal iteration and recursion, |
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392 // this would look like: |
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393 // |
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394 // ``` |
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395 // fn traverse_children( |
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396 // children: &ChildNodes, |
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397 // each: &mut impl FnMut(&Node), |
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398 // ) { |
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399 // for child in children.values() { |
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400 // traverse_children(&child.children, each); |
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401 // each(child); |
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402 // } |
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403 // } |
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404 // ``` |
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405 // |
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406 // However we want an external iterator and therefore can’t use the |
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407 // call stack. Use an explicit stack instead: |
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408 let mut stack = Vec::new(); |
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409 let mut iter = self.root.as_ref().iter(); |
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410 std::iter::from_fn(move || { |
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411 while let Some(child_node) = iter.next() { |
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412 // Pseudo-recursion |
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413 let new_iter = child_node.children().iter(); |
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414 let old_iter = std::mem::replace(&mut iter, new_iter); |
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415 stack.push((child_node, old_iter)); |
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416 } |
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417 // Found the end of a `children.iter()` iterator. |
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418 if let Some((child_node, next_iter)) = stack.pop() { |
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419 // "Return" from pseudo-recursion by restoring state from the |
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420 // explicit stack |
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421 iter = next_iter; |
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422 |
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423 Some(child_node) |
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424 } else { |
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425 // Reached the bottom of the stack, we’re done |
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426 None |
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427 } |
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428 }) |
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429 } |
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430 |
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431 fn clear_known_ambiguous_mtimes(&mut self, paths: &[impl AsRef<HgPath>]) { |
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432 for path in paths { |
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433 if let Some(node) = |
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434 Self::get_node_mut(&mut self.root, path.as_ref()) |
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435 { |
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436 if let Some(entry) = node.entry.as_mut() { |
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437 entry.clear_mtime(); |
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438 } |
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439 } |
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440 } |
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441 } |
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442 } |
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443 |
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444 impl<'on_disk> super::dispatch::DirstateMapMethods for DirstateMap<'on_disk> { |
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445 fn clear(&mut self) { |
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446 self.root = Default::default(); |
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447 self.nodes_with_entry_count = 0; |
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448 self.nodes_with_copy_source_count = 0; |
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449 } |
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450 |
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451 fn add_file( |
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452 &mut self, |
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453 filename: &HgPath, |
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454 old_state: EntryState, |
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455 entry: DirstateEntry, |
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456 ) -> Result<(), DirstateMapError> { |
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457 self.add_or_remove_file(filename, old_state, entry); |
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458 Ok(()) |
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459 } |
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460 |
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461 fn remove_file( |
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462 &mut self, |
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463 filename: &HgPath, |
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464 old_state: EntryState, |
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465 size: i32, |
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466 ) -> Result<(), DirstateMapError> { |
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467 let entry = DirstateEntry { |
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468 state: EntryState::Removed, |
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469 mode: 0, |
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470 size, |
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471 mtime: 0, |
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472 }; |
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473 self.add_or_remove_file(filename, old_state, entry); |
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474 Ok(()) |
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475 } |
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476 |
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477 fn drop_file( |
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478 &mut self, |
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479 filename: &HgPath, |
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480 old_state: EntryState, |
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481 ) -> Result<bool, DirstateMapError> { |
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482 struct Dropped { |
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483 was_tracked: bool, |
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484 had_entry: bool, |
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485 had_copy_source: bool, |
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486 } |
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487 fn recur(nodes: &mut ChildNodes, path: &HgPath) -> Option<Dropped> { |
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488 let (first_path_component, rest_of_path) = |
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489 path.split_first_component(); |
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490 let node = nodes.make_mut().get_mut(first_path_component)?; |
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491 let dropped; |
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492 if let Some(rest) = rest_of_path { |
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493 dropped = recur(&mut node.children, rest)?; |
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494 if dropped.was_tracked { |
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495 node.tracked_descendants_count -= 1; |
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496 } |
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497 } else { |
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498 dropped = Dropped { |
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499 was_tracked: node |
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500 .entry |
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501 .as_ref() |
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502 .map_or(false, |entry| entry.state.is_tracked()), |
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503 had_entry: node.entry.take().is_some(), |
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504 had_copy_source: node.copy_source.take().is_some(), |
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505 }; |
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506 } |
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507 // After recursion, for both leaf (rest_of_path is None) nodes and |
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508 // parent nodes, remove a node if it just became empty. |
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509 if node.entry.is_none() |
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510 && node.copy_source.is_none() |
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511 && node.children.is_empty() |
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512 { |
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513 nodes.make_mut().remove(first_path_component); |
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514 } |
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515 Some(dropped) |
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516 } |
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517 |
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518 if let Some(dropped) = recur(&mut self.root, filename) { |
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519 if dropped.had_entry { |
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520 self.nodes_with_entry_count -= 1 |
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521 } |
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522 if dropped.had_copy_source { |
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523 self.nodes_with_copy_source_count -= 1 |
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524 } |
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525 Ok(dropped.had_entry) |
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526 } else { |
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527 debug_assert!(!old_state.is_tracked()); |
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528 Ok(false) |
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529 } |
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530 } |
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531 |
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532 fn clear_ambiguous_times(&mut self, filenames: Vec<HgPathBuf>, now: i32) { |
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533 for filename in filenames { |
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534 if let Some(node) = Self::get_node_mut(&mut self.root, &filename) { |
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535 if let Some(entry) = node.entry.as_mut() { |
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536 entry.clear_ambiguous_mtime(now); |
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537 } |
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538 } |
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539 } |
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540 } |
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541 |
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542 fn non_normal_entries_contains(&mut self, key: &HgPath) -> bool { |
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543 self.get_node(key) |
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544 .and_then(|node| node.entry()) |
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545 .map_or(false, |entry| entry.is_non_normal()) |
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546 } |
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547 |
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548 fn non_normal_entries_remove(&mut self, _key: &HgPath) { |
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549 // Do nothing, this `DirstateMap` does not have a separate "non normal |
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550 // entries" set that need to be kept up to date |
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551 } |
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552 |
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553 fn non_normal_or_other_parent_paths( |
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554 &mut self, |
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555 ) -> Box<dyn Iterator<Item = &HgPath> + '_> { |
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556 Box::new(self.iter_nodes().filter_map(|node| { |
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557 node.entry() |
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558 .filter(|entry| { |
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559 entry.is_non_normal() || entry.is_from_other_parent() |
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560 }) |
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561 .map(|_| node.full_path()) |
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562 })) |
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563 } |
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564 |
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565 fn set_non_normal_other_parent_entries(&mut self, _force: bool) { |
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566 // Do nothing, this `DirstateMap` does not have a separate "non normal |
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567 // entries" and "from other parent" sets that need to be recomputed |
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568 } |
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569 |
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570 fn iter_non_normal_paths( |
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571 &mut self, |
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572 ) -> Box<dyn Iterator<Item = &HgPath> + Send + '_> { |
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573 self.iter_non_normal_paths_panic() |
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574 } |
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575 |
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576 fn iter_non_normal_paths_panic( |
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577 &self, |
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578 ) -> Box<dyn Iterator<Item = &HgPath> + Send + '_> { |
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579 Box::new(self.iter_nodes().filter_map(|node| { |
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580 node.entry() |
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581 .filter(|entry| entry.is_non_normal()) |
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582 .map(|_| node.full_path()) |
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583 })) |
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584 } |
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585 |
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586 fn iter_other_parent_paths( |
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587 &mut self, |
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588 ) -> Box<dyn Iterator<Item = &HgPath> + Send + '_> { |
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589 Box::new(self.iter_nodes().filter_map(|node| { |
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590 node.entry() |
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591 .filter(|entry| entry.is_from_other_parent()) |
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592 .map(|_| node.full_path()) |
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593 })) |
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594 } |
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595 |
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596 fn has_tracked_dir( |
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597 &mut self, |
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598 directory: &HgPath, |
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599 ) -> Result<bool, DirstateMapError> { |
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600 if let Some(node) = self.get_node(directory) { |
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601 // A node without a `DirstateEntry` was created to hold child |
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602 // nodes, and is therefore a directory. |
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603 Ok(!node.has_entry() && node.tracked_descendants_count() > 0) |
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604 } else { |
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605 Ok(false) |
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606 } |
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607 } |
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608 |
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609 fn has_dir( |
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610 &mut self, |
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611 directory: &HgPath, |
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612 ) -> Result<bool, DirstateMapError> { |
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613 if let Some(node) = self.get_node(directory) { |
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614 // A node without a `DirstateEntry` was created to hold child |
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615 // nodes, and is therefore a directory. |
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616 Ok(!node.has_entry()) |
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617 } else { |
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618 Ok(false) |
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619 } |
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620 } |
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621 |
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622 #[timed] |
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623 fn pack_v1( |
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624 &mut self, |
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625 parents: DirstateParents, |
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626 now: Timestamp, |
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627 ) -> Result<Vec<u8>, DirstateError> { |
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628 let now: i32 = now.0.try_into().expect("time overflow"); |
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629 let mut ambiguous_mtimes = Vec::new(); |
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630 // Optizimation (to be measured?): pre-compute size to avoid `Vec` |
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631 // reallocations |
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632 let mut size = parents.as_bytes().len(); |
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633 for node in self.iter_nodes() { |
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634 if let Some(entry) = node.entry() { |
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635 size += |
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636 packed_entry_size(node.full_path(), node.copy_source()); |
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637 if entry.mtime_is_ambiguous(now) { |
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638 ambiguous_mtimes.push(node.full_path_cow()) |
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639 } |
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640 } |
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641 } |
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642 self.clear_known_ambiguous_mtimes(&ambiguous_mtimes); |
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643 |
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644 let mut packed = Vec::with_capacity(size); |
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645 packed.extend(parents.as_bytes()); |
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646 |
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647 for node in self.iter_nodes() { |
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648 if let Some(entry) = node.entry() { |
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649 pack_entry( |
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650 node.full_path(), |
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651 &entry, |
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652 node.copy_source(), |
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653 &mut packed, |
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654 ); |
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655 } |
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656 } |
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657 Ok(packed) |
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658 } |
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659 |
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660 #[timed] |
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661 fn pack_v2( |
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662 &mut self, |
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663 parents: DirstateParents, |
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664 now: Timestamp, |
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665 ) -> Result<Vec<u8>, DirstateError> { |
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666 // TODO: how do we want to handle this in 2038? |
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667 let now: i32 = now.0.try_into().expect("time overflow"); |
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668 let mut paths = Vec::new(); |
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669 for node in self.iter_nodes() { |
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670 if let Some(entry) = node.entry() { |
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671 if entry.mtime_is_ambiguous(now) { |
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672 paths.push(node.full_path_cow()) |
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673 } |
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674 } |
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675 } |
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676 // Borrow of `self` ends here since we collect cloned paths |
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677 |
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678 self.clear_known_ambiguous_mtimes(&paths); |
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679 |
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680 on_disk::write(self, parents) |
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681 } |
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682 |
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683 fn set_all_dirs(&mut self) -> Result<(), DirstateMapError> { |
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684 // Do nothing, this `DirstateMap` does not a separate `all_dirs` that |
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685 // needs to be recomputed |
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686 Ok(()) |
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687 } |
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688 |
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689 fn set_dirs(&mut self) -> Result<(), DirstateMapError> { |
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690 // Do nothing, this `DirstateMap` does not a separate `dirs` that needs |
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691 // to be recomputed |
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692 Ok(()) |
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693 } |
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694 |
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695 fn status<'a>( |
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696 &'a mut self, |
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697 matcher: &'a (dyn Matcher + Sync), |
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698 root_dir: PathBuf, |
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699 ignore_files: Vec<PathBuf>, |
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700 options: StatusOptions, |
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701 ) -> Result<(DirstateStatus<'a>, Vec<PatternFileWarning>), StatusError> |
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702 { |
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703 super::status::status(self, matcher, root_dir, ignore_files, options) |
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704 } |
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705 |
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706 fn copy_map_len(&self) -> usize { |
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707 self.nodes_with_copy_source_count as usize |
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708 } |
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709 |
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710 fn copy_map_iter(&self) -> CopyMapIter<'_> { |
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711 Box::new(self.iter_nodes().filter_map(|node| { |
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712 node.copy_source() |
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713 .map(|copy_source| (node.full_path(), copy_source)) |
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714 })) |
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715 } |
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716 |
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717 fn copy_map_contains_key(&self, key: &HgPath) -> bool { |
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718 if let Some(node) = self.get_node(key) { |
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719 node.copy_source().is_some() |
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720 } else { |
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721 false |
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722 } |
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723 } |
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724 |
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725 fn copy_map_get(&self, key: &HgPath) -> Option<&HgPath> { |
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726 self.get_node(key)?.copy_source() |
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727 } |
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728 |
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729 fn copy_map_remove(&mut self, key: &HgPath) -> Option<HgPathBuf> { |
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730 let count = &mut self.nodes_with_copy_source_count; |
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731 Self::get_node_mut(&mut self.root, key).and_then(|node| { |
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732 if node.copy_source.is_some() { |
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733 *count -= 1 |
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734 } |
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735 node.copy_source.take().map(Cow::into_owned) |
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736 }) |
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737 } |
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738 |
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739 fn copy_map_insert( |
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740 &mut self, |
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741 key: HgPathBuf, |
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742 value: HgPathBuf, |
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743 ) -> Option<HgPathBuf> { |
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744 let node = Self::get_or_insert_node( |
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745 &mut self.root, |
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746 &key, |
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747 WithBasename::to_cow_owned, |
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748 |_ancestor| {}, |
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749 ); |
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750 if node.copy_source.is_none() { |
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751 self.nodes_with_copy_source_count += 1 |
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752 } |
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753 node.copy_source.replace(value.into()).map(Cow::into_owned) |
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754 } |
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755 |
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756 fn len(&self) -> usize { |
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757 self.nodes_with_entry_count as usize |
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758 } |
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759 |
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760 fn contains_key(&self, key: &HgPath) -> bool { |
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761 self.get(key).is_some() |
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762 } |
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763 |
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764 fn get(&self, key: &HgPath) -> Option<DirstateEntry> { |
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765 self.get_node(key)?.entry() |
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766 } |
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767 |
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768 fn iter(&self) -> StateMapIter<'_> { |
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769 Box::new(self.iter_nodes().filter_map(|node| { |
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770 node.entry().map(|entry| (node.full_path(), entry)) |
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771 })) |
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772 } |
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773 } |