author | Simon Sapin <simon.sapin@octobus.net> |
Tue, 06 Apr 2021 14:35:39 +0200 | |
changeset 47099 | 3da19db33cbc |
parent 47098 | d7631d55da3e |
child 47100 | caa3031c9ed5 |
permissions | -rw-r--r-- |
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use std::collections::BTreeMap; |
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use std::path::PathBuf; |
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use std::time::Duration; |
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use super::path_with_basename::WithBasename; |
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use crate::dirstate::parsers::parse_dirstate_entries; |
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use crate::dirstate::parsers::parse_dirstate_parents; |
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use crate::matchers::Matcher; |
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use crate::revlog::node::NULL_NODE; |
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use crate::utils::hg_path::{HgPath, HgPathBuf}; |
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use crate::CopyMapIter; |
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use crate::DirstateEntry; |
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use crate::DirstateError; |
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use crate::DirstateMapError; |
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use crate::DirstateParents; |
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use crate::DirstateStatus; |
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use crate::EntryState; |
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use crate::FastHashMap; |
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use crate::HgPathCow; |
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use crate::PatternFileWarning; |
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use crate::StateMapIter; |
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use crate::StatusError; |
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use crate::StatusOptions; |
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pub struct DirstateMap { |
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parents: Option<DirstateParents>, |
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dirty_parents: bool, |
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root: ChildNodes, |
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} |
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/// Using a plain `HgPathBuf` of the full path from the repository root as a |
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/// map key would also work: all paths in a given map have the same parent |
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/// path, so comparing full paths gives the same result as comparing base |
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/// names. However `BTreeMap` would waste time always re-comparing the same |
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/// string prefix. |
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type ChildNodes = BTreeMap<WithBasename<HgPathBuf>, Node>; |
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#[derive(Default)] |
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struct Node { |
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entry: Option<DirstateEntry>, |
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copy_source: Option<HgPathBuf>, |
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children: ChildNodes, |
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} |
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impl DirstateMap { |
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pub fn new() -> Self { |
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Self { |
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parents: None, |
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dirty_parents: false, |
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root: ChildNodes::new(), |
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} |
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} |
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fn get_node(&self, path: &HgPath) -> Option<&Node> { |
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let mut children = &self.root; |
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let mut components = path.components(); |
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let mut component = |
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components.next().expect("expected at least one components"); |
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loop { |
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let child = children.get(component)?; |
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if let Some(next_component) = components.next() { |
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component = next_component; |
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children = &child.children; |
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} else { |
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return Some(child); |
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} |
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} |
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} |
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fn get_or_insert_node(&mut self, path: &HgPath) -> &mut Node { |
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let mut child_nodes = &mut self.root; |
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let mut inclusive_ancestor_paths = |
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WithBasename::inclusive_ancestors_of(path); |
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let mut ancestor_path = inclusive_ancestor_paths |
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.next() |
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.expect("expected at least one inclusive ancestor"); |
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loop { |
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// TODO: can we avoid double lookup in all cases without allocating |
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// an owned key in cases where the map already contains that key? |
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81 |
let child_node = |
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if child_nodes.contains_key(ancestor_path.base_name()) { |
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child_nodes.get_mut(ancestor_path.base_name()).unwrap() |
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} else { |
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// This is always a vacant entry, using `.entry()` lets us |
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// return a `&mut Node` of the newly-inserted node without |
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// yet another lookup. `BTreeMap::insert` doesn’t do this. |
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child_nodes.entry(ancestor_path.to_owned()).or_default() |
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89 |
}; |
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if let Some(next) = inclusive_ancestor_paths.next() { |
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ancestor_path = next; |
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child_nodes = &mut child_node.children; |
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} else { |
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return child_node; |
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} |
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} |
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} |
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} |
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impl super::dispatch::DirstateMapMethods for DirstateMap { |
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101 |
fn clear(&mut self) { |
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102 |
self.set_parents(&DirstateParents { |
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103 |
p1: NULL_NODE, |
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104 |
p2: NULL_NODE, |
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105 |
}); |
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106 |
self.root.clear() |
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107 |
} |
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108 |
|
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109 |
fn add_file( |
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110 |
&mut self, |
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111 |
_filename: &HgPath, |
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112 |
_old_state: EntryState, |
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113 |
_entry: DirstateEntry, |
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114 |
) -> Result<(), DirstateMapError> { |
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115 |
todo!() |
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116 |
} |
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117 |
|
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118 |
fn remove_file( |
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119 |
&mut self, |
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120 |
_filename: &HgPath, |
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121 |
_old_state: EntryState, |
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122 |
_size: i32, |
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123 |
) -> Result<(), DirstateMapError> { |
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todo!() |
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125 |
} |
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126 |
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127 |
fn drop_file( |
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128 |
&mut self, |
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129 |
_filename: &HgPath, |
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130 |
_old_state: EntryState, |
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131 |
) -> Result<bool, DirstateMapError> { |
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132 |
todo!() |
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133 |
} |
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134 |
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135 |
fn clear_ambiguous_times( |
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136 |
&mut self, |
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137 |
_filenames: Vec<HgPathBuf>, |
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138 |
_now: i32, |
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139 |
) { |
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140 |
todo!() |
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141 |
} |
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142 |
|
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143 |
fn non_normal_entries_contains(&mut self, _key: &HgPath) -> bool { |
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144 |
todo!() |
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145 |
} |
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146 |
|
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147 |
fn non_normal_entries_remove(&mut self, _key: &HgPath) -> bool { |
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148 |
todo!() |
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149 |
} |
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150 |
|
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151 |
fn non_normal_or_other_parent_paths( |
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152 |
&mut self, |
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153 |
) -> Box<dyn Iterator<Item = &HgPathBuf> + '_> { |
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154 |
todo!() |
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155 |
} |
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156 |
|
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157 |
fn set_non_normal_other_parent_entries(&mut self, _force: bool) { |
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158 |
todo!() |
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159 |
} |
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160 |
|
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161 |
fn iter_non_normal_paths( |
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162 |
&mut self, |
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163 |
) -> Box<dyn Iterator<Item = &HgPathBuf> + Send + '_> { |
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164 |
todo!() |
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165 |
} |
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166 |
|
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167 |
fn iter_non_normal_paths_panic( |
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168 |
&self, |
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169 |
) -> Box<dyn Iterator<Item = &HgPathBuf> + Send + '_> { |
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170 |
todo!() |
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171 |
} |
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|
172 |
|
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173 |
fn iter_other_parent_paths( |
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174 |
&mut self, |
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175 |
) -> Box<dyn Iterator<Item = &HgPathBuf> + Send + '_> { |
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176 |
todo!() |
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177 |
} |
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|
178 |
|
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179 |
fn has_tracked_dir( |
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180 |
&mut self, |
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181 |
_directory: &HgPath, |
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182 |
) -> Result<bool, DirstateMapError> { |
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183 |
todo!() |
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184 |
} |
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185 |
|
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186 |
fn has_dir( |
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187 |
&mut self, |
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188 |
_directory: &HgPath, |
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189 |
) -> Result<bool, DirstateMapError> { |
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190 |
todo!() |
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191 |
} |
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192 |
|
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193 |
fn parents( |
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194 |
&mut self, |
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195 |
file_contents: &[u8], |
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196 |
) -> Result<&DirstateParents, DirstateError> { |
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197 |
if self.parents.is_none() { |
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198 |
let parents = if !file_contents.is_empty() { |
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199 |
parse_dirstate_parents(file_contents)?.clone() |
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200 |
} else { |
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201 |
DirstateParents { |
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202 |
p1: NULL_NODE, |
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203 |
p2: NULL_NODE, |
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204 |
} |
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205 |
}; |
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206 |
self.parents = Some(parents); |
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207 |
} |
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208 |
Ok(self.parents.as_ref().unwrap()) |
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209 |
} |
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210 |
|
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fn set_parents(&mut self, parents: &DirstateParents) { |
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self.parents = Some(parents.clone()); |
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self.dirty_parents = true; |
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} |
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|
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fn read<'a>( |
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&mut self, |
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file_contents: &'a [u8], |
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) -> Result<Option<&'a DirstateParents>, DirstateError> { |
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if file_contents.is_empty() { |
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return Ok(None); |
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} |
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let parents = parse_dirstate_entries( |
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file_contents, |
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|path, entry, copy_source| { |
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let node = self.get_or_insert_node(path); |
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node.entry = Some(*entry); |
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node.copy_source = copy_source.map(HgPath::to_owned); |
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}, |
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231 |
)?; |
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if !self.dirty_parents { |
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self.set_parents(parents); |
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} |
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Ok(Some(parents)) |
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} |
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239 |
|
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240 |
fn pack( |
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&mut self, |
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_parents: DirstateParents, |
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_now: Duration, |
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) -> Result<Vec<u8>, DirstateError> { |
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todo!() |
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} |
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247 |
|
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fn build_file_fold_map(&mut self) -> &FastHashMap<HgPathBuf, HgPathBuf> { |
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todo!() |
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} |
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251 |
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fn set_all_dirs(&mut self) -> Result<(), DirstateMapError> { |
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todo!() |
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254 |
} |
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255 |
|
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fn set_dirs(&mut self) -> Result<(), DirstateMapError> { |
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todo!() |
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258 |
} |
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259 |
|
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260 |
fn status<'a>( |
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261 |
&'a self, |
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_matcher: &'a (dyn Matcher + Sync), |
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263 |
_root_dir: PathBuf, |
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264 |
_ignore_files: Vec<PathBuf>, |
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_options: StatusOptions, |
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) -> Result< |
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267 |
( |
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268 |
(Vec<HgPathCow<'a>>, DirstateStatus<'a>), |
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269 |
Vec<PatternFileWarning>, |
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270 |
), |
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271 |
StatusError, |
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272 |
> { |
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todo!() |
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274 |
} |
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|
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276 |
fn copy_map_len(&self) -> usize { |
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todo!() |
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} |
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279 |
|
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280 |
fn copy_map_iter(&self) -> CopyMapIter<'_> { |
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todo!() |
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282 |
} |
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283 |
|
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fn copy_map_contains_key(&self, key: &HgPath) -> bool { |
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if let Some(node) = self.get_node(key) { |
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node.copy_source.is_some() |
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} else { |
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288 |
false |
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289 |
} |
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} |
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291 |
|
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fn copy_map_get(&self, key: &HgPath) -> Option<&HgPathBuf> { |
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self.get_node(key)?.copy_source.as_ref() |
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} |
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|
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fn copy_map_remove(&mut self, _key: &HgPath) -> Option<HgPathBuf> { |
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todo!() |
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298 |
} |
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299 |
|
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300 |
fn copy_map_insert( |
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&mut self, |
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_key: HgPathBuf, |
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_value: HgPathBuf, |
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304 |
) -> Option<HgPathBuf> { |
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todo!() |
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} |
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307 |
|
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308 |
fn len(&self) -> usize { |
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todo!() |
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310 |
} |
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|
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fn contains_key(&self, key: &HgPath) -> bool { |
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self.get(key).is_some() |
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} |
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|
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fn get(&self, key: &HgPath) -> Option<&DirstateEntry> { |
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self.get_node(key)?.entry.as_ref() |
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} |
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fn iter(&self) -> StateMapIter<'_> { |
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todo!() |
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} |
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} |