annotate rust/hg-core/src/revlog/mod.rs @ 51752:918ceb5a3d25

rust: apply clippy lints They are at most harmless and at best make the codebase more readable and simpler.
author Rapha?l Gom?s <rgomes@octobus.net>
date Thu, 18 Jul 2024 13:35:39 +0200
parents 59f846fbc11d
children 0604673428b7
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1 // Copyright 2018-2023 Georges Racinet <georges.racinet@octobus.net>
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2 // and Mercurial contributors
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3 //
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4 // This software may be used and distributed according to the terms of the
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5 // GNU General Public License version 2 or any later version.
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6 //! Mercurial concepts for handling revision history
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7
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8 pub mod node;
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9 pub mod nodemap;
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10 mod nodemap_docket;
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11 pub mod path_encode;
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12 pub use node::{FromHexError, Node, NodePrefix};
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13 pub mod changelog;
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14 pub mod filelog;
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15 pub mod index;
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16 pub mod manifest;
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17 pub mod patch;
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18
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19 use std::borrow::Cow;
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20 use std::io::Read;
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21 use std::ops::Deref;
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22 use std::path::Path;
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23
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24 use flate2::read::ZlibDecoder;
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25 use sha1::{Digest, Sha1};
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26 use std::cell::RefCell;
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27 use zstd;
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28
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29 use self::node::{NODE_BYTES_LENGTH, NULL_NODE};
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30 use self::nodemap_docket::NodeMapDocket;
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31 use super::index::Index;
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32 use super::index::INDEX_ENTRY_SIZE;
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33 use super::nodemap::{NodeMap, NodeMapError};
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34 use crate::errors::HgError;
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35 use crate::vfs::Vfs;
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36
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37 /// As noted in revlog.c, revision numbers are actually encoded in
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38 /// 4 bytes, and are liberally converted to ints, whence the i32
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39 pub type BaseRevision = i32;
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40
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41 /// Mercurial revision numbers
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42 /// In contrast to the more general [`UncheckedRevision`], these are "checked"
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43 /// in the sense that they should only be used for revisions that are
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44 /// valid for a given index (i.e. in bounds).
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45 #[derive(
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46 Debug,
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47 derive_more::Display,
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48 Clone,
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49 Copy,
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50 Hash,
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51 PartialEq,
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52 Eq,
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53 PartialOrd,
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54 Ord,
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55 )]
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56 pub struct Revision(pub BaseRevision);
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57
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58 impl format_bytes::DisplayBytes for Revision {
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59 fn display_bytes(
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60 &self,
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61 output: &mut dyn std::io::Write,
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62 ) -> std::io::Result<()> {
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63 self.0.display_bytes(output)
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64 }
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65 }
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66
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67 /// Unchecked Mercurial revision numbers.
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68 ///
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69 /// Values of this type have no guarantee of being a valid revision number
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70 /// in any context. Use method `check_revision` to get a valid revision within
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71 /// the appropriate index object.
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72 #[derive(
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73 Debug,
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74 derive_more::Display,
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75 Clone,
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76 Copy,
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77 Hash,
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78 PartialEq,
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79 Eq,
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80 PartialOrd,
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81 Ord,
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82 )]
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83 pub struct UncheckedRevision(pub BaseRevision);
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84
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85 impl format_bytes::DisplayBytes for UncheckedRevision {
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86 fn display_bytes(
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87 &self,
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88 output: &mut dyn std::io::Write,
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89 ) -> std::io::Result<()> {
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90 self.0.display_bytes(output)
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91 }
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92 }
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93
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94 impl From<Revision> for UncheckedRevision {
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95 fn from(value: Revision) -> Self {
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96 Self(value.0)
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97 }
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98 }
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99
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100 impl From<BaseRevision> for UncheckedRevision {
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101 fn from(value: BaseRevision) -> Self {
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102 Self(value)
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103 }
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104 }
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105
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106 /// Marker expressing the absence of a parent
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107 ///
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108 /// Independently of the actual representation, `NULL_REVISION` is guaranteed
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109 /// to be smaller than all existing revisions.
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110 pub const NULL_REVISION: Revision = Revision(-1);
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111
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112 /// Same as `mercurial.node.wdirrev`
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113 ///
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114 /// This is also equal to `i32::max_value()`, but it's better to spell
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115 /// it out explicitely, same as in `mercurial.node`
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116 #[allow(clippy::unreadable_literal)]
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117 pub const WORKING_DIRECTORY_REVISION: UncheckedRevision =
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118 UncheckedRevision(0x7fffffff);
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119
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120 pub const WORKING_DIRECTORY_HEX: &str =
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121 "ffffffffffffffffffffffffffffffffffffffff";
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122
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123 /// The simplest expression of what we need of Mercurial DAGs.
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124 pub trait Graph {
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125 /// Return the two parents of the given `Revision`.
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126 ///
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127 /// Each of the parents can be independently `NULL_REVISION`
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128 fn parents(&self, rev: Revision) -> Result<[Revision; 2], GraphError>;
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129 }
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130
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131 #[derive(Clone, Debug, PartialEq)]
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132 pub enum GraphError {
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133 ParentOutOfRange(Revision),
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134 }
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135
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136 impl<T: Graph> Graph for &T {
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137 fn parents(&self, rev: Revision) -> Result<[Revision; 2], GraphError> {
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138 (*self).parents(rev)
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139 }
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140 }
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141
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142 /// The Mercurial Revlog Index
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143 ///
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144 /// This is currently limited to the minimal interface that is needed for
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145 /// the [`nodemap`](nodemap/index.html) module
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146 pub trait RevlogIndex {
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147 /// Total number of Revisions referenced in this index
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148 fn len(&self) -> usize;
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149
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150 fn is_empty(&self) -> bool {
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151 self.len() == 0
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152 }
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153
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154 /// Return a reference to the Node or `None` for `NULL_REVISION`
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155 fn node(&self, rev: Revision) -> Option<&Node>;
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156
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157 /// Return a [`Revision`] if `rev` is a valid revision number for this
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158 /// index.
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159 ///
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160 /// [`NULL_REVISION`] is considered to be valid.
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161 #[inline(always)]
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162 fn check_revision(&self, rev: UncheckedRevision) -> Option<Revision> {
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163 let rev = rev.0;
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164
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165 if rev == NULL_REVISION.0 || (rev >= 0 && (rev as usize) < self.len())
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166 {
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167 Some(Revision(rev))
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168 } else {
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169 None
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170 }
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171 }
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172 }
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173
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174 const REVISION_FLAG_CENSORED: u16 = 1 << 15;
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175 const REVISION_FLAG_ELLIPSIS: u16 = 1 << 14;
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176 const REVISION_FLAG_EXTSTORED: u16 = 1 << 13;
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177 const REVISION_FLAG_HASCOPIESINFO: u16 = 1 << 12;
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178
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179 // Keep this in sync with REVIDX_KNOWN_FLAGS in
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180 // mercurial/revlogutils/flagutil.py
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181 const REVIDX_KNOWN_FLAGS: u16 = REVISION_FLAG_CENSORED
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182 | REVISION_FLAG_ELLIPSIS
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183 | REVISION_FLAG_EXTSTORED
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184 | REVISION_FLAG_HASCOPIESINFO;
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185
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186 const NULL_REVLOG_ENTRY_FLAGS: u16 = 0;
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187
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188 #[derive(Debug, derive_more::From, derive_more::Display)]
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189 pub enum RevlogError {
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190 InvalidRevision,
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191 /// Working directory is not supported
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192 WDirUnsupported,
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193 /// Found more than one entry whose ID match the requested prefix
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194 AmbiguousPrefix,
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195 #[from]
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196 Other(HgError),
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197 }
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198
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199 impl From<NodeMapError> for RevlogError {
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200 fn from(error: NodeMapError) -> Self {
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201 match error {
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202 NodeMapError::MultipleResults => RevlogError::AmbiguousPrefix,
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203 NodeMapError::RevisionNotInIndex(rev) => RevlogError::corrupted(
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204 format!("nodemap point to revision {} not in index", rev),
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205 ),
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206 }
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207 }
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208 }
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209
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210 fn corrupted<S: AsRef<str>>(context: S) -> HgError {
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211 HgError::corrupted(format!("corrupted revlog, {}", context.as_ref()))
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212 }
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213
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214 impl RevlogError {
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215 fn corrupted<S: AsRef<str>>(context: S) -> Self {
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216 RevlogError::Other(corrupted(context))
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217 }
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218 }
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219
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220 /// Read only implementation of revlog.
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221 pub struct Revlog {
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222 /// When index and data are not interleaved: bytes of the revlog index.
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223 /// When index and data are interleaved: bytes of the revlog index and
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224 /// data.
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225 index: Index,
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226 /// When index and data are not interleaved: bytes of the revlog data
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227 data_bytes: Option<Box<dyn Deref<Target = [u8]> + Send>>,
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228 /// When present on disk: the persistent nodemap for this revlog
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229 nodemap: Option<nodemap::NodeTree>,
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230 }
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231
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232 impl Graph for Revlog {
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233 fn parents(&self, rev: Revision) -> Result<[Revision; 2], GraphError> {
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234 self.index.parents(rev)
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235 }
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236 }
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237
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238 #[derive(Debug, Copy, Clone)]
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239 pub enum RevlogVersionOptions {
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240 V0,
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241 V1 { generaldelta: bool },
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242 V2,
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243 ChangelogV2 { compute_rank: bool },
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244 }
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245
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246 /// Options to govern how a revlog should be opened, usually from the
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247 /// repository configuration or requirements.
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248 #[derive(Debug, Copy, Clone)]
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249 pub struct RevlogOpenOptions {
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250 /// The revlog version, along with any option specific to this version
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251 pub version: RevlogVersionOptions,
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252 /// Whether the revlog uses a persistent nodemap.
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253 pub use_nodemap: bool,
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254 // TODO other non-header/version options,
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255 }
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256
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257 impl RevlogOpenOptions {
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258 pub fn new() -> Self {
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259 Self {
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260 version: RevlogVersionOptions::V1 { generaldelta: true },
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261 use_nodemap: false,
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262 }
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263 }
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264
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265 fn default_index_header(&self) -> index::IndexHeader {
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266 index::IndexHeader {
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267 header_bytes: match self.version {
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268 RevlogVersionOptions::V0 => [0, 0, 0, 0],
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269 RevlogVersionOptions::V1 { generaldelta } => {
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270 [0, if generaldelta { 3 } else { 1 }, 0, 1]
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271 }
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272 RevlogVersionOptions::V2 => 0xDEADu32.to_be_bytes(),
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273 RevlogVersionOptions::ChangelogV2 { compute_rank: _ } => {
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274 0xD34Du32.to_be_bytes()
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275 }
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276 },
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277 }
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278 }
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279 }
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280
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281 impl Default for RevlogOpenOptions {
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282 fn default() -> Self {
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283 Self::new()
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284 }
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285 }
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286
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287 impl Revlog {
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288 /// Open a revlog index file.
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289 ///
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290 /// It will also open the associated data file if index and data are not
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291 /// interleaved.
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292 pub fn open(
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293 store_vfs: &Vfs,
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294 index_path: impl AsRef<Path>,
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295 data_path: Option<&Path>,
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296 options: RevlogOpenOptions,
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297 ) -> Result<Self, HgError> {
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298 Self::open_gen(store_vfs, index_path, data_path, options, None)
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299 }
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300
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301 fn open_gen(
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302 store_vfs: &Vfs,
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303 index_path: impl AsRef<Path>,
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304 data_path: Option<&Path>,
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305 options: RevlogOpenOptions,
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306 nodemap_for_test: Option<nodemap::NodeTree>,
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307 ) -> Result<Self, HgError> {
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308 let index_path = index_path.as_ref();
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309 let index = {
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310 match store_vfs.mmap_open_opt(index_path)? {
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311 None => Index::new(
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312 Box::<Vec<_>>::default(),
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313 options.default_index_header(),
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314 ),
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315 Some(index_mmap) => {
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316 let index = Index::new(
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317 Box::new(index_mmap),
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318 options.default_index_header(),
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319 )?;
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320 Ok(index)
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321 }
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322 }
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323 }?;
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324
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325 let default_data_path = index_path.with_extension("d");
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326
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327 // type annotation required
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328 // won't recognize Mmap as Deref<Target = [u8]>
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329 let data_bytes: Option<Box<dyn Deref<Target = [u8]> + Send>> =
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330 if index.is_inline() {
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331 None
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332 } else {
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333 let data_path = data_path.unwrap_or(&default_data_path);
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334 let data_mmap = store_vfs.mmap_open(data_path)?;
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335 Some(Box::new(data_mmap))
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336 };
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337
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338 let nodemap = if index.is_inline() || !options.use_nodemap {
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339 None
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340 } else {
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341 NodeMapDocket::read_from_file(store_vfs, index_path)?.map(
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342 |(docket, data)| {
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343 nodemap::NodeTree::load_bytes(
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344 Box::new(data),
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345 docket.data_length,
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346 )
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347 },
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348 )
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349 };
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350
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351 let nodemap = nodemap_for_test.or(nodemap);
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352
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353 Ok(Revlog {
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354 index,
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355 data_bytes,
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356 nodemap,
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357 })
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358 }
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359
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360 /// Return number of entries of the `Revlog`.
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361 pub fn len(&self) -> usize {
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362 self.index.len()
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363 }
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364
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365 /// Returns `true` if the `Revlog` has zero `entries`.
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366 pub fn is_empty(&self) -> bool {
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367 self.index.is_empty()
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368 }
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369
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370 /// Returns the node ID for the given revision number, if it exists in this
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371 /// revlog
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372 pub fn node_from_rev(&self, rev: UncheckedRevision) -> Option<&Node> {
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373 if rev == NULL_REVISION.into() {
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374 return Some(&NULL_NODE);
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375 }
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376 let rev = self.index.check_revision(rev)?;
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377 Some(self.index.get_entry(rev)?.hash())
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378 }
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379
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
380 /// Return the revision number for the given node ID, if it exists in this
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
381 /// revlog
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
382 pub fn rev_from_node(
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
383 &self,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
384 node: NodePrefix,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
385 ) -> Result<Revision, RevlogError> {
50784
363620b934aa revlog: fix a bug where NULL_NODE failed to be resolved to NULL_REV
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50743
diff changeset
386 if let Some(nodemap) = &self.nodemap {
50741
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
387 nodemap
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
388 .find_bin(&self.index, node)?
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
389 .ok_or(RevlogError::InvalidRevision)
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
390 } else {
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
391 self.rev_from_node_no_persistent_nodemap(node)
50784
363620b934aa revlog: fix a bug where NULL_NODE failed to be resolved to NULL_REV
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50743
diff changeset
392 }
50740
0159b014f3ab rust-revlog: split out method for `rev_from_node` without persistent nodemap
Georges Racinet <georges.racinet@octobus.net>
parents: 50542
diff changeset
393 }
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
394
50740
0159b014f3ab rust-revlog: split out method for `rev_from_node` without persistent nodemap
Georges Racinet <georges.racinet@octobus.net>
parents: 50542
diff changeset
395 /// Same as `rev_from_node`, without using a persistent nodemap
0159b014f3ab rust-revlog: split out method for `rev_from_node` without persistent nodemap
Georges Racinet <georges.racinet@octobus.net>
parents: 50542
diff changeset
396 ///
0159b014f3ab rust-revlog: split out method for `rev_from_node` without persistent nodemap
Georges Racinet <georges.racinet@octobus.net>
parents: 50542
diff changeset
397 /// This is used as fallback when a persistent nodemap is not present.
0159b014f3ab rust-revlog: split out method for `rev_from_node` without persistent nodemap
Georges Racinet <georges.racinet@octobus.net>
parents: 50542
diff changeset
398 /// This happens when the persistent-nodemap experimental feature is not
0159b014f3ab rust-revlog: split out method for `rev_from_node` without persistent nodemap
Georges Racinet <georges.racinet@octobus.net>
parents: 50542
diff changeset
399 /// enabled, or for small revlogs.
0159b014f3ab rust-revlog: split out method for `rev_from_node` without persistent nodemap
Georges Racinet <georges.racinet@octobus.net>
parents: 50542
diff changeset
400 fn rev_from_node_no_persistent_nodemap(
0159b014f3ab rust-revlog: split out method for `rev_from_node` without persistent nodemap
Georges Racinet <georges.racinet@octobus.net>
parents: 50542
diff changeset
401 &self,
0159b014f3ab rust-revlog: split out method for `rev_from_node` without persistent nodemap
Georges Racinet <georges.racinet@octobus.net>
parents: 50542
diff changeset
402 node: NodePrefix,
0159b014f3ab rust-revlog: split out method for `rev_from_node` without persistent nodemap
Georges Racinet <georges.racinet@octobus.net>
parents: 50542
diff changeset
403 ) -> Result<Revision, RevlogError> {
0159b014f3ab rust-revlog: split out method for `rev_from_node` without persistent nodemap
Georges Racinet <georges.racinet@octobus.net>
parents: 50542
diff changeset
404 // Linear scan of the revlog
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
405 // TODO: consider building a non-persistent nodemap in memory to
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
406 // optimize these cases.
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
407 let mut found_by_prefix = None;
50998
12c308c55e53 branching: merge stable into default
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 50990 50785
diff changeset
408 for rev in (-1..self.len() as BaseRevision).rev() {
50990
4c5f6e95df84 rust: make `Revision` a newtype
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50989
diff changeset
409 let rev = Revision(rev as BaseRevision);
50998
12c308c55e53 branching: merge stable into default
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 50990 50785
diff changeset
410 let candidate_node = if rev == Revision(-1) {
50784
363620b934aa revlog: fix a bug where NULL_NODE failed to be resolved to NULL_REV
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50743
diff changeset
411 NULL_NODE
363620b934aa revlog: fix a bug where NULL_NODE failed to be resolved to NULL_REV
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50743
diff changeset
412 } else {
363620b934aa revlog: fix a bug where NULL_NODE failed to be resolved to NULL_REV
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50743
diff changeset
413 let index_entry =
363620b934aa revlog: fix a bug where NULL_NODE failed to be resolved to NULL_REV
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50743
diff changeset
414 self.index.get_entry(rev).ok_or_else(|| {
363620b934aa revlog: fix a bug where NULL_NODE failed to be resolved to NULL_REV
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50743
diff changeset
415 HgError::corrupted(
363620b934aa revlog: fix a bug where NULL_NODE failed to be resolved to NULL_REV
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50743
diff changeset
416 "revlog references a revision not in the index",
363620b934aa revlog: fix a bug where NULL_NODE failed to be resolved to NULL_REV
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50743
diff changeset
417 )
363620b934aa revlog: fix a bug where NULL_NODE failed to be resolved to NULL_REV
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50743
diff changeset
418 })?;
363620b934aa revlog: fix a bug where NULL_NODE failed to be resolved to NULL_REV
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50743
diff changeset
419 *index_entry.hash()
363620b934aa revlog: fix a bug where NULL_NODE failed to be resolved to NULL_REV
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50743
diff changeset
420 };
363620b934aa revlog: fix a bug where NULL_NODE failed to be resolved to NULL_REV
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50743
diff changeset
421 if node == candidate_node {
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
422 return Ok(rev);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
423 }
50784
363620b934aa revlog: fix a bug where NULL_NODE failed to be resolved to NULL_REV
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50743
diff changeset
424 if node.is_prefix_of(&candidate_node) {
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
425 if found_by_prefix.is_some() {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
426 return Err(RevlogError::AmbiguousPrefix);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
427 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
428 found_by_prefix = Some(rev)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
429 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
430 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
431 found_by_prefix.ok_or(RevlogError::InvalidRevision)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
432 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
433
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
434 /// Returns whether the given revision exists in this revlog.
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
435 pub fn has_rev(&self, rev: UncheckedRevision) -> bool {
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
436 self.index.check_revision(rev).is_some()
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
437 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
438
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
439 /// Return the full data associated to a revision.
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
440 ///
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
441 /// All entries required to build the final data out of deltas will be
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
442 /// retrieved as needed, and the deltas will be applied to the inital
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
443 /// snapshot to rebuild the final data.
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
444 pub fn get_rev_data(
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
445 &self,
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
446 rev: UncheckedRevision,
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
447 ) -> Result<Cow<[u8]>, RevlogError> {
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
448 if rev == NULL_REVISION.into() {
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
449 return Ok(Cow::Borrowed(&[]));
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
450 };
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
451 self.get_entry(rev)?.data()
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
452 }
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
453
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
454 /// [`Self::get_rev_data`] for checked revisions.
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
455 pub fn get_rev_data_for_checked_rev(
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
456 &self,
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
457 rev: Revision,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
458 ) -> Result<Cow<[u8]>, RevlogError> {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
459 if rev == NULL_REVISION {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
460 return Ok(Cow::Borrowed(&[]));
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
461 };
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
462 self.get_entry_for_checked_rev(rev)?.data()
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
463 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
464
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
465 /// Check the hash of some given data against the recorded hash.
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
466 pub fn check_hash(
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
467 &self,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
468 p1: Revision,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
469 p2: Revision,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
470 expected: &[u8],
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
471 data: &[u8],
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
472 ) -> bool {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
473 let e1 = self.index.get_entry(p1);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
474 let h1 = match e1 {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
475 Some(ref entry) => entry.hash(),
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
476 None => &NULL_NODE,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
477 };
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
478 let e2 = self.index.get_entry(p2);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
479 let h2 = match e2 {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
480 Some(ref entry) => entry.hash(),
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
481 None => &NULL_NODE,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
482 };
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
483
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
484 hash(data, h1.as_bytes(), h2.as_bytes()) == expected
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
485 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
486
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
487 /// Build the full data of a revision out its snapshot
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
488 /// and its deltas.
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
489 fn build_data_from_deltas(
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
490 snapshot: RevlogEntry,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
491 deltas: &[RevlogEntry],
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
492 ) -> Result<Vec<u8>, HgError> {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
493 let snapshot = snapshot.data_chunk()?;
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
494 let deltas = deltas
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
495 .iter()
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
496 .rev()
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
497 .map(RevlogEntry::data_chunk)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
498 .collect::<Result<Vec<_>, _>>()?;
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
499 let patches: Vec<_> =
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
500 deltas.iter().map(|d| patch::PatchList::new(d)).collect();
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
501 let patch = patch::fold_patch_lists(&patches);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
502 Ok(patch.apply(&snapshot))
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
503 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
504
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
505 /// Return the revlog data.
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
506 fn data(&self) -> &[u8] {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
507 match &self.data_bytes {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
508 Some(data_bytes) => data_bytes,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
509 None => panic!(
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
510 "forgot to load the data or trying to access inline data"
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
511 ),
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
512 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
513 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
514
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
515 pub fn make_null_entry(&self) -> RevlogEntry {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
516 RevlogEntry {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
517 revlog: self,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
518 rev: NULL_REVISION,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
519 bytes: b"",
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
520 compressed_len: 0,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
521 uncompressed_len: 0,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
522 base_rev_or_base_of_delta_chain: None,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
523 p1: NULL_REVISION,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
524 p2: NULL_REVISION,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
525 flags: NULL_REVLOG_ENTRY_FLAGS,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
526 hash: NULL_NODE,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
527 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
528 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
529
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
530 fn get_entry_for_checked_rev(
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
531 &self,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
532 rev: Revision,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
533 ) -> Result<RevlogEntry, RevlogError> {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
534 if rev == NULL_REVISION {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
535 return Ok(self.make_null_entry());
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
536 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
537 let index_entry = self
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
538 .index
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
539 .get_entry(rev)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
540 .ok_or(RevlogError::InvalidRevision)?;
51513
d2858d97af6c rust-index: drop offset_override
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 51512
diff changeset
541 let offset = index_entry.offset();
d2858d97af6c rust-index: drop offset_override
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 51512
diff changeset
542 let start = if self.index.is_inline() {
d2858d97af6c rust-index: drop offset_override
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 51512
diff changeset
543 offset + ((rev.0 as usize + 1) * INDEX_ENTRY_SIZE)
d2858d97af6c rust-index: drop offset_override
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 51512
diff changeset
544 } else {
d2858d97af6c rust-index: drop offset_override
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 51512
diff changeset
545 offset
d2858d97af6c rust-index: drop offset_override
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 51512
diff changeset
546 };
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
547 let end = start + index_entry.compressed_len() as usize;
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
548 let data = if self.index.is_inline() {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
549 self.index.data(start, end)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
550 } else {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
551 &self.data()[start..end]
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
552 };
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
553 let base_rev = self
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
554 .index
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
555 .check_revision(index_entry.base_revision_or_base_of_delta_chain())
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
556 .ok_or_else(|| {
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
557 RevlogError::corrupted(format!(
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
558 "base revision for rev {} is invalid",
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
559 rev
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
560 ))
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
561 })?;
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
562 let p1 =
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
563 self.index.check_revision(index_entry.p1()).ok_or_else(|| {
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
564 RevlogError::corrupted(format!(
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
565 "p1 for rev {} is invalid",
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
566 rev
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
567 ))
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
568 })?;
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
569 let p2 =
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
570 self.index.check_revision(index_entry.p2()).ok_or_else(|| {
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
571 RevlogError::corrupted(format!(
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
572 "p2 for rev {} is invalid",
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
573 rev
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
574 ))
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
575 })?;
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
576 let entry = RevlogEntry {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
577 revlog: self,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
578 rev,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
579 bytes: data,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
580 compressed_len: index_entry.compressed_len(),
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
581 uncompressed_len: index_entry.uncompressed_len(),
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
582 base_rev_or_base_of_delta_chain: if base_rev == rev {
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
583 None
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
584 } else {
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
585 Some(base_rev)
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
586 },
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
587 p1,
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
588 p2,
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
589 flags: index_entry.flags(),
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
590 hash: *index_entry.hash(),
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
591 };
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
592 Ok(entry)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
593 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
594
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
595 /// Get an entry of the revlog.
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
596 pub fn get_entry(
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
597 &self,
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
598 rev: UncheckedRevision,
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
599 ) -> Result<RevlogEntry, RevlogError> {
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
600 if rev == NULL_REVISION.into() {
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
601 return Ok(self.make_null_entry());
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
602 }
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
603 let rev = self.index.check_revision(rev).ok_or_else(|| {
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
604 RevlogError::corrupted(format!("rev {} is invalid", rev))
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
605 })?;
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
606 self.get_entry_for_checked_rev(rev)
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
607 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
608 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
609
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
610 /// The revlog entry's bytes and the necessary informations to extract
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
611 /// the entry's data.
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
612 #[derive(Clone)]
50446
7ef51fff2c4f rust-revlog: explicit naming for `RevlogEntry` lifetime
Georges Racinet <georges.racinet@octobus.net>
parents: 50010
diff changeset
613 pub struct RevlogEntry<'revlog> {
7ef51fff2c4f rust-revlog: explicit naming for `RevlogEntry` lifetime
Georges Racinet <georges.racinet@octobus.net>
parents: 50010
diff changeset
614 revlog: &'revlog Revlog,
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
615 rev: Revision,
50446
7ef51fff2c4f rust-revlog: explicit naming for `RevlogEntry` lifetime
Georges Racinet <georges.racinet@octobus.net>
parents: 50010
diff changeset
616 bytes: &'revlog [u8],
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
617 compressed_len: u32,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
618 uncompressed_len: i32,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
619 base_rev_or_base_of_delta_chain: Option<Revision>,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
620 p1: Revision,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
621 p2: Revision,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
622 flags: u16,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
623 hash: Node,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
624 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
625
50540
74d8a1b03960 rust: speed up zstd decompression by re-using the decompression context
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50447
diff changeset
626 thread_local! {
74d8a1b03960 rust: speed up zstd decompression by re-using the decompression context
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50447
diff changeset
627 // seems fine to [unwrap] here: this can only fail due to memory allocation
74d8a1b03960 rust: speed up zstd decompression by re-using the decompression context
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50447
diff changeset
628 // failing, and it's normal for that to cause panic.
74d8a1b03960 rust: speed up zstd decompression by re-using the decompression context
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50447
diff changeset
629 static ZSTD_DECODER : RefCell<zstd::bulk::Decompressor<'static>> =
74d8a1b03960 rust: speed up zstd decompression by re-using the decompression context
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50447
diff changeset
630 RefCell::new(zstd::bulk::Decompressor::new().ok().unwrap());
74d8a1b03960 rust: speed up zstd decompression by re-using the decompression context
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50447
diff changeset
631 }
74d8a1b03960 rust: speed up zstd decompression by re-using the decompression context
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50447
diff changeset
632
74d8a1b03960 rust: speed up zstd decompression by re-using the decompression context
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50447
diff changeset
633 fn zstd_decompress_to_buffer(
74d8a1b03960 rust: speed up zstd decompression by re-using the decompression context
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50447
diff changeset
634 bytes: &[u8],
74d8a1b03960 rust: speed up zstd decompression by re-using the decompression context
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50447
diff changeset
635 buf: &mut Vec<u8>,
74d8a1b03960 rust: speed up zstd decompression by re-using the decompression context
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50447
diff changeset
636 ) -> Result<usize, std::io::Error> {
74d8a1b03960 rust: speed up zstd decompression by re-using the decompression context
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50447
diff changeset
637 ZSTD_DECODER
74d8a1b03960 rust: speed up zstd decompression by re-using the decompression context
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50447
diff changeset
638 .with(|decoder| decoder.borrow_mut().decompress_to_buffer(bytes, buf))
74d8a1b03960 rust: speed up zstd decompression by re-using the decompression context
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50447
diff changeset
639 }
74d8a1b03960 rust: speed up zstd decompression by re-using the decompression context
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50447
diff changeset
640
50446
7ef51fff2c4f rust-revlog: explicit naming for `RevlogEntry` lifetime
Georges Racinet <georges.racinet@octobus.net>
parents: 50010
diff changeset
641 impl<'revlog> RevlogEntry<'revlog> {
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
642 pub fn revision(&self) -> Revision {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
643 self.rev
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
644 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
645
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
646 pub fn node(&self) -> &Node {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
647 &self.hash
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
648 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
649
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
650 pub fn uncompressed_len(&self) -> Option<u32> {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
651 u32::try_from(self.uncompressed_len).ok()
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
652 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
653
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
654 pub fn has_p1(&self) -> bool {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
655 self.p1 != NULL_REVISION
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
656 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
657
50447
c101e7757ed7 rust-revlog: fix lifetime problem for RevlogEntry parent entries accessors
Georges Racinet <georges.racinet@octobus.net>
parents: 50446
diff changeset
658 pub fn p1_entry(
c101e7757ed7 rust-revlog: fix lifetime problem for RevlogEntry parent entries accessors
Georges Racinet <georges.racinet@octobus.net>
parents: 50446
diff changeset
659 &self,
c101e7757ed7 rust-revlog: fix lifetime problem for RevlogEntry parent entries accessors
Georges Racinet <georges.racinet@octobus.net>
parents: 50446
diff changeset
660 ) -> Result<Option<RevlogEntry<'revlog>>, RevlogError> {
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
661 if self.p1 == NULL_REVISION {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
662 Ok(None)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
663 } else {
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
664 Ok(Some(self.revlog.get_entry_for_checked_rev(self.p1)?))
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
665 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
666 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
667
50447
c101e7757ed7 rust-revlog: fix lifetime problem for RevlogEntry parent entries accessors
Georges Racinet <georges.racinet@octobus.net>
parents: 50446
diff changeset
668 pub fn p2_entry(
c101e7757ed7 rust-revlog: fix lifetime problem for RevlogEntry parent entries accessors
Georges Racinet <georges.racinet@octobus.net>
parents: 50446
diff changeset
669 &self,
c101e7757ed7 rust-revlog: fix lifetime problem for RevlogEntry parent entries accessors
Georges Racinet <georges.racinet@octobus.net>
parents: 50446
diff changeset
670 ) -> Result<Option<RevlogEntry<'revlog>>, RevlogError> {
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
671 if self.p2 == NULL_REVISION {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
672 Ok(None)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
673 } else {
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
674 Ok(Some(self.revlog.get_entry_for_checked_rev(self.p2)?))
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
675 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
676 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
677
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
678 pub fn p1(&self) -> Option<Revision> {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
679 if self.p1 == NULL_REVISION {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
680 None
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
681 } else {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
682 Some(self.p1)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
683 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
684 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
685
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
686 pub fn p2(&self) -> Option<Revision> {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
687 if self.p2 == NULL_REVISION {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
688 None
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
689 } else {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
690 Some(self.p2)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
691 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
692 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
693
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
694 pub fn is_censored(&self) -> bool {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
695 (self.flags & REVISION_FLAG_CENSORED) != 0
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
696 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
697
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
698 pub fn has_length_affecting_flag_processor(&self) -> bool {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
699 // Relevant Python code: revlog.size()
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
700 // note: ELLIPSIS is known to not change the content
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
701 (self.flags & (REVIDX_KNOWN_FLAGS ^ REVISION_FLAG_ELLIPSIS)) != 0
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
702 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
703
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
704 /// The data for this entry, after resolving deltas if any.
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
705 pub fn rawdata(&self) -> Result<Cow<'revlog, [u8]>, RevlogError> {
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
706 let mut entry = self.clone();
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
707 let mut delta_chain = vec![];
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
708
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
709 // The meaning of `base_rev_or_base_of_delta_chain` depends on
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
710 // generaldelta. See the doc on `ENTRY_DELTA_BASE` in
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
711 // `mercurial/revlogutils/constants.py` and the code in
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
712 // [_chaininfo] and in [index_deltachain].
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
713 let uses_generaldelta = self.revlog.index.uses_generaldelta();
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
714 while let Some(base_rev) = entry.base_rev_or_base_of_delta_chain {
50987
9929c8a73488 rust-revlog: split logic for `rawdata` to prepare for `UncheckedRevision` use
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50986
diff changeset
715 entry = if uses_generaldelta {
9929c8a73488 rust-revlog: split logic for `rawdata` to prepare for `UncheckedRevision` use
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50986
diff changeset
716 delta_chain.push(entry);
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
717 self.revlog.get_entry_for_checked_rev(base_rev)?
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
718 } else {
50990
4c5f6e95df84 rust: make `Revision` a newtype
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50989
diff changeset
719 let base_rev = UncheckedRevision(entry.rev.0 - 1);
50987
9929c8a73488 rust-revlog: split logic for `rawdata` to prepare for `UncheckedRevision` use
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50986
diff changeset
720 delta_chain.push(entry);
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
721 self.revlog.get_entry(base_rev)?
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
722 };
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
723 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
724
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
725 let data = if delta_chain.is_empty() {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
726 entry.data_chunk()?
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
727 } else {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
728 Revlog::build_data_from_deltas(entry, &delta_chain)?.into()
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
729 };
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
730
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
731 Ok(data)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
732 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
733
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
734 fn check_data(
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
735 &self,
50446
7ef51fff2c4f rust-revlog: explicit naming for `RevlogEntry` lifetime
Georges Racinet <georges.racinet@octobus.net>
parents: 50010
diff changeset
736 data: Cow<'revlog, [u8]>,
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
737 ) -> Result<Cow<'revlog, [u8]>, RevlogError> {
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
738 if self.revlog.check_hash(
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
739 self.p1,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
740 self.p2,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
741 self.hash.as_bytes(),
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
742 &data,
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
743 ) {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
744 Ok(data)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
745 } else {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
746 if (self.flags & REVISION_FLAG_ELLIPSIS) != 0 {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
747 return Err(HgError::unsupported(
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
748 "ellipsis revisions are not supported by rhg",
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
749 )
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
750 .into());
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
751 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
752 Err(corrupted(format!(
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
753 "hash check failed for revision {}",
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
754 self.rev
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
755 ))
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
756 .into())
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
757 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
758 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
759
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
760 pub fn data(&self) -> Result<Cow<'revlog, [u8]>, RevlogError> {
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
761 let data = self.rawdata()?;
50743
124c44b5cfad rust-revlog: fix RevlogEntry.data() for NULL_REVISION
Georges Racinet <georges.racinet@octobus.net>
parents: 50742
diff changeset
762 if self.rev == NULL_REVISION {
124c44b5cfad rust-revlog: fix RevlogEntry.data() for NULL_REVISION
Georges Racinet <georges.racinet@octobus.net>
parents: 50742
diff changeset
763 return Ok(data);
124c44b5cfad rust-revlog: fix RevlogEntry.data() for NULL_REVISION
Georges Racinet <georges.racinet@octobus.net>
parents: 50742
diff changeset
764 }
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
765 if self.is_censored() {
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
766 return Err(HgError::CensoredNodeError.into());
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
767 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
768 self.check_data(data)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
769 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
770
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
771 /// Extract the data contained in the entry.
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
772 /// This may be a delta. (See `is_delta`.)
50446
7ef51fff2c4f rust-revlog: explicit naming for `RevlogEntry` lifetime
Georges Racinet <georges.racinet@octobus.net>
parents: 50010
diff changeset
773 fn data_chunk(&self) -> Result<Cow<'revlog, [u8]>, HgError> {
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
774 if self.bytes.is_empty() {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
775 return Ok(Cow::Borrowed(&[]));
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
776 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
777 match self.bytes[0] {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
778 // Revision data is the entirety of the entry, including this
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
779 // header.
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
780 b'\0' => Ok(Cow::Borrowed(self.bytes)),
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
781 // Raw revision data follows.
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
782 b'u' => Ok(Cow::Borrowed(&self.bytes[1..])),
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
783 // zlib (RFC 1950) data.
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
784 b'x' => Ok(Cow::Owned(self.uncompressed_zlib_data()?)),
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
785 // zstd data.
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
786 b'\x28' => Ok(Cow::Owned(self.uncompressed_zstd_data()?)),
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
787 // A proper new format should have had a repo/store requirement.
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
788 format_type => Err(corrupted(format!(
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
789 "unknown compression header '{}'",
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
790 format_type
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
791 ))),
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
792 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
793 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
794
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
795 fn uncompressed_zlib_data(&self) -> Result<Vec<u8>, HgError> {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
796 let mut decoder = ZlibDecoder::new(self.bytes);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
797 if self.is_delta() {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
798 let mut buf = Vec::with_capacity(self.compressed_len as usize);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
799 decoder
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
800 .read_to_end(&mut buf)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
801 .map_err(|e| corrupted(e.to_string()))?;
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
802 Ok(buf)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
803 } else {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
804 let cap = self.uncompressed_len.max(0) as usize;
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
805 let mut buf = vec![0; cap];
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
806 decoder
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
807 .read_exact(&mut buf)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
808 .map_err(|e| corrupted(e.to_string()))?;
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
809 Ok(buf)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
810 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
811 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
812
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
813 fn uncompressed_zstd_data(&self) -> Result<Vec<u8>, HgError> {
50542
39ed7b2953bb rust: mostly avoid streaming zstd decompression
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50541
diff changeset
814 let cap = self.uncompressed_len.max(0) as usize;
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
815 if self.is_delta() {
50542
39ed7b2953bb rust: mostly avoid streaming zstd decompression
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50541
diff changeset
816 // [cap] is usually an over-estimate of the space needed because
39ed7b2953bb rust: mostly avoid streaming zstd decompression
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50541
diff changeset
817 // it's the length of delta-decoded data, but we're interested
39ed7b2953bb rust: mostly avoid streaming zstd decompression
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50541
diff changeset
818 // in the size of the delta.
39ed7b2953bb rust: mostly avoid streaming zstd decompression
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50541
diff changeset
819 // This means we have to [shrink_to_fit] to avoid holding on
39ed7b2953bb rust: mostly avoid streaming zstd decompression
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50541
diff changeset
820 // to a large chunk of memory, but it also means we must have a
39ed7b2953bb rust: mostly avoid streaming zstd decompression
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50541
diff changeset
821 // fallback branch, for the case when the delta is longer than
39ed7b2953bb rust: mostly avoid streaming zstd decompression
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50541
diff changeset
822 // the original data (surprisingly, this does happen in practice)
39ed7b2953bb rust: mostly avoid streaming zstd decompression
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50541
diff changeset
823 let mut buf = Vec::with_capacity(cap);
39ed7b2953bb rust: mostly avoid streaming zstd decompression
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50541
diff changeset
824 match zstd_decompress_to_buffer(self.bytes, &mut buf) {
39ed7b2953bb rust: mostly avoid streaming zstd decompression
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50541
diff changeset
825 Ok(_) => buf.shrink_to_fit(),
39ed7b2953bb rust: mostly avoid streaming zstd decompression
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50541
diff changeset
826 Err(_) => {
39ed7b2953bb rust: mostly avoid streaming zstd decompression
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50541
diff changeset
827 buf.clear();
39ed7b2953bb rust: mostly avoid streaming zstd decompression
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50541
diff changeset
828 zstd::stream::copy_decode(self.bytes, &mut buf)
39ed7b2953bb rust: mostly avoid streaming zstd decompression
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50541
diff changeset
829 .map_err(|e| corrupted(e.to_string()))?;
39ed7b2953bb rust: mostly avoid streaming zstd decompression
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50541
diff changeset
830 }
39ed7b2953bb rust: mostly avoid streaming zstd decompression
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50541
diff changeset
831 };
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
832 Ok(buf)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
833 } else {
50541
d1cab48354bc rust: in zstd decompression, avoid a useless vec initialization
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50540
diff changeset
834 let mut buf = Vec::with_capacity(cap);
50540
74d8a1b03960 rust: speed up zstd decompression by re-using the decompression context
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50447
diff changeset
835 let len = zstd_decompress_to_buffer(self.bytes, &mut buf)
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
836 .map_err(|e| corrupted(e.to_string()))?;
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
837 if len != self.uncompressed_len as usize {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
838 Err(corrupted("uncompressed length does not match"))
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
839 } else {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
840 Ok(buf)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
841 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
842 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
843 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
844
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
845 /// Tell if the entry is a snapshot or a delta
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
846 /// (influences on decompression).
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
847 fn is_delta(&self) -> bool {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
848 self.base_rev_or_base_of_delta_chain.is_some()
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
849 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
850 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
851
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
852 /// Calculate the hash of a revision given its data and its parents.
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
853 fn hash(
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
854 data: &[u8],
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
855 p1_hash: &[u8],
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
856 p2_hash: &[u8],
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
857 ) -> [u8; NODE_BYTES_LENGTH] {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
858 let mut hasher = Sha1::new();
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
859 let (a, b) = (p1_hash, p2_hash);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
860 if a > b {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
861 hasher.update(b);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
862 hasher.update(a);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
863 } else {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
864 hasher.update(a);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
865 hasher.update(b);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
866 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
867 hasher.update(data);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
868 *hasher.finalize().as_ref()
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
869 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
870
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
871 #[cfg(test)]
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
872 mod tests {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
873 use super::*;
51512
c3f2a9b55f59 rust-index: stop calling `with_offset` in the tests
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 51277
diff changeset
874 use crate::index::IndexEntryBuilder;
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
875 use itertools::Itertools;
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
876
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
877 #[test]
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
878 fn test_empty() {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
879 let temp = tempfile::tempdir().unwrap();
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
880 let vfs = Vfs { base: temp.path() };
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
881 std::fs::write(temp.path().join("foo.i"), b"").unwrap();
51212
13f58ce70299 rust-revlog: teach the revlog opening code to read the repo options
Rapha?l Gom?s <rgomes@octobus.net>
parents: 51118
diff changeset
882 let revlog =
13f58ce70299 rust-revlog: teach the revlog opening code to read the repo options
Rapha?l Gom?s <rgomes@octobus.net>
parents: 51118
diff changeset
883 Revlog::open(&vfs, "foo.i", None, RevlogOpenOptions::new())
13f58ce70299 rust-revlog: teach the revlog opening code to read the repo options
Rapha?l Gom?s <rgomes@octobus.net>
parents: 51118
diff changeset
884 .unwrap();
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
885 assert!(revlog.is_empty());
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
886 assert_eq!(revlog.len(), 0);
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
887 assert!(revlog.get_entry(0.into()).is_err());
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
888 assert!(!revlog.has_rev(0.into()));
50742
3338c6ffdaa3 rust-revlog: using constant in test
Georges Racinet <georges.racinet@octobus.net>
parents: 50741
diff changeset
889 assert_eq!(
3338c6ffdaa3 rust-revlog: using constant in test
Georges Racinet <georges.racinet@octobus.net>
parents: 50741
diff changeset
890 revlog.rev_from_node(NULL_NODE.into()).unwrap(),
3338c6ffdaa3 rust-revlog: using constant in test
Georges Racinet <georges.racinet@octobus.net>
parents: 50741
diff changeset
891 NULL_REVISION
3338c6ffdaa3 rust-revlog: using constant in test
Georges Racinet <georges.racinet@octobus.net>
parents: 50741
diff changeset
892 );
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
893 let null_entry = revlog.get_entry(NULL_REVISION.into()).ok().unwrap();
50743
124c44b5cfad rust-revlog: fix RevlogEntry.data() for NULL_REVISION
Georges Racinet <georges.racinet@octobus.net>
parents: 50742
diff changeset
894 assert_eq!(null_entry.revision(), NULL_REVISION);
124c44b5cfad rust-revlog: fix RevlogEntry.data() for NULL_REVISION
Georges Racinet <georges.racinet@octobus.net>
parents: 50742
diff changeset
895 assert!(null_entry.data().unwrap().is_empty());
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
896 }
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
897
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
898 #[test]
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
899 fn test_inline() {
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
900 let temp = tempfile::tempdir().unwrap();
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
901 let vfs = Vfs { base: temp.path() };
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
902 let node0 = Node::from_hex("2ed2a3912a0b24502043eae84ee4b279c18b90dd")
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
903 .unwrap();
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
904 let node1 = Node::from_hex("b004912a8510032a0350a74daa2803dadfb00e12")
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
905 .unwrap();
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
906 let node2 = Node::from_hex("dd6ad206e907be60927b5a3117b97dffb2590582")
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
907 .unwrap();
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
908 let entry0_bytes = IndexEntryBuilder::new()
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
909 .is_first(true)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
910 .with_version(1)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
911 .with_inline(true)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
912 .with_node(node0)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
913 .build();
51512
c3f2a9b55f59 rust-index: stop calling `with_offset` in the tests
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 51277
diff changeset
914 let entry1_bytes = IndexEntryBuilder::new().with_node(node1).build();
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
915 let entry2_bytes = IndexEntryBuilder::new()
50990
4c5f6e95df84 rust: make `Revision` a newtype
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50989
diff changeset
916 .with_p1(Revision(0))
4c5f6e95df84 rust: make `Revision` a newtype
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50989
diff changeset
917 .with_p2(Revision(1))
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
918 .with_node(node2)
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
919 .build();
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
920 let contents = vec![entry0_bytes, entry1_bytes, entry2_bytes]
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
921 .into_iter()
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
922 .flatten()
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
923 .collect_vec();
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
924 std::fs::write(temp.path().join("foo.i"), contents).unwrap();
51212
13f58ce70299 rust-revlog: teach the revlog opening code to read the repo options
Rapha?l Gom?s <rgomes@octobus.net>
parents: 51118
diff changeset
925 let revlog =
13f58ce70299 rust-revlog: teach the revlog opening code to read the repo options
Rapha?l Gom?s <rgomes@octobus.net>
parents: 51118
diff changeset
926 Revlog::open(&vfs, "foo.i", None, RevlogOpenOptions::new())
13f58ce70299 rust-revlog: teach the revlog opening code to read the repo options
Rapha?l Gom?s <rgomes@octobus.net>
parents: 51118
diff changeset
927 .unwrap();
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
928
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
929 let entry0 = revlog.get_entry(0.into()).ok().unwrap();
50990
4c5f6e95df84 rust: make `Revision` a newtype
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50989
diff changeset
930 assert_eq!(entry0.revision(), Revision(0));
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
931 assert_eq!(*entry0.node(), node0);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
932 assert!(!entry0.has_p1());
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
933 assert_eq!(entry0.p1(), None);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
934 assert_eq!(entry0.p2(), None);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
935 let p1_entry = entry0.p1_entry().unwrap();
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
936 assert!(p1_entry.is_none());
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
937 let p2_entry = entry0.p2_entry().unwrap();
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
938 assert!(p2_entry.is_none());
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
939
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
940 let entry1 = revlog.get_entry(1.into()).ok().unwrap();
50990
4c5f6e95df84 rust: make `Revision` a newtype
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50989
diff changeset
941 assert_eq!(entry1.revision(), Revision(1));
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
942 assert_eq!(*entry1.node(), node1);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
943 assert!(!entry1.has_p1());
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
944 assert_eq!(entry1.p1(), None);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
945 assert_eq!(entry1.p2(), None);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
946 let p1_entry = entry1.p1_entry().unwrap();
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
947 assert!(p1_entry.is_none());
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
948 let p2_entry = entry1.p2_entry().unwrap();
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
949 assert!(p2_entry.is_none());
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
950
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
951 let entry2 = revlog.get_entry(2.into()).ok().unwrap();
50990
4c5f6e95df84 rust: make `Revision` a newtype
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50989
diff changeset
952 assert_eq!(entry2.revision(), Revision(2));
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
953 assert_eq!(*entry2.node(), node2);
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
954 assert!(entry2.has_p1());
50990
4c5f6e95df84 rust: make `Revision` a newtype
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50989
diff changeset
955 assert_eq!(entry2.p1(), Some(Revision(0)));
4c5f6e95df84 rust: make `Revision` a newtype
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50989
diff changeset
956 assert_eq!(entry2.p2(), Some(Revision(1)));
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
957 let p1_entry = entry2.p1_entry().unwrap();
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
958 assert!(p1_entry.is_some());
50990
4c5f6e95df84 rust: make `Revision` a newtype
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50989
diff changeset
959 assert_eq!(p1_entry.unwrap().revision(), Revision(0));
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
960 let p2_entry = entry2.p2_entry().unwrap();
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
961 assert!(p2_entry.is_some());
50990
4c5f6e95df84 rust: make `Revision` a newtype
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50989
diff changeset
962 assert_eq!(p2_entry.unwrap().revision(), Revision(1));
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
963 }
50741
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
964
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
965 #[test]
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
966 fn test_nodemap() {
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
967 let temp = tempfile::tempdir().unwrap();
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
968 let vfs = Vfs { base: temp.path() };
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
969
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
970 // building a revlog with a forced Node starting with zeros
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
971 // This is a corruption, but it does not preclude using the nodemap
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
972 // if we don't try and access the data
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
973 let node0 = Node::from_hex("00d2a3912a0b24502043eae84ee4b279c18b90dd")
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
974 .unwrap();
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
975 let node1 = Node::from_hex("b004912a8510032a0350a74daa2803dadfb00e12")
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
976 .unwrap();
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
977 let entry0_bytes = IndexEntryBuilder::new()
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
978 .is_first(true)
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
979 .with_version(1)
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
980 .with_inline(true)
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
981 .with_node(node0)
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
982 .build();
51512
c3f2a9b55f59 rust-index: stop calling `with_offset` in the tests
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 51277
diff changeset
983 let entry1_bytes = IndexEntryBuilder::new().with_node(node1).build();
50741
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
984 let contents = vec![entry0_bytes, entry1_bytes]
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
985 .into_iter()
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
986 .flatten()
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
987 .collect_vec();
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
988 std::fs::write(temp.path().join("foo.i"), contents).unwrap();
50785
eccf7dc7c91e revlog: make the rust test for node hex prefix resolution exercise the nodemap
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50784
diff changeset
989
eccf7dc7c91e revlog: make the rust test for node hex prefix resolution exercise the nodemap
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50784
diff changeset
990 let mut idx = nodemap::tests::TestNtIndex::new();
50998
12c308c55e53 branching: merge stable into default
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 50990 50785
diff changeset
991 idx.insert_node(Revision(0), node0).unwrap();
12c308c55e53 branching: merge stable into default
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 50990 50785
diff changeset
992 idx.insert_node(Revision(1), node1).unwrap();
50785
eccf7dc7c91e revlog: make the rust test for node hex prefix resolution exercise the nodemap
Arseniy Alekseyev <aalekseyev@janestreet.com>
parents: 50784
diff changeset
993
51212
13f58ce70299 rust-revlog: teach the revlog opening code to read the repo options
Rapha?l Gom?s <rgomes@octobus.net>
parents: 51118
diff changeset
994 let revlog = Revlog::open_gen(
13f58ce70299 rust-revlog: teach the revlog opening code to read the repo options
Rapha?l Gom?s <rgomes@octobus.net>
parents: 51118
diff changeset
995 &vfs,
13f58ce70299 rust-revlog: teach the revlog opening code to read the repo options
Rapha?l Gom?s <rgomes@octobus.net>
parents: 51118
diff changeset
996 "foo.i",
13f58ce70299 rust-revlog: teach the revlog opening code to read the repo options
Rapha?l Gom?s <rgomes@octobus.net>
parents: 51118
diff changeset
997 None,
13f58ce70299 rust-revlog: teach the revlog opening code to read the repo options
Rapha?l Gom?s <rgomes@octobus.net>
parents: 51118
diff changeset
998 RevlogOpenOptions::new(),
13f58ce70299 rust-revlog: teach the revlog opening code to read the repo options
Rapha?l Gom?s <rgomes@octobus.net>
parents: 51118
diff changeset
999 Some(idx.nt),
13f58ce70299 rust-revlog: teach the revlog opening code to read the repo options
Rapha?l Gom?s <rgomes@octobus.net>
parents: 51118
diff changeset
1000 )
13f58ce70299 rust-revlog: teach the revlog opening code to read the repo options
Rapha?l Gom?s <rgomes@octobus.net>
parents: 51118
diff changeset
1001 .unwrap();
50741
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1002
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1003 // accessing the data shows the corruption
50988
1928b770e3e7 rust: use the new `UncheckedRevision` everywhere applicable
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50987
diff changeset
1004 revlog.get_entry(0.into()).unwrap().data().unwrap_err();
50741
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1005
50990
4c5f6e95df84 rust: make `Revision` a newtype
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50989
diff changeset
1006 assert_eq!(
4c5f6e95df84 rust: make `Revision` a newtype
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50989
diff changeset
1007 revlog.rev_from_node(NULL_NODE.into()).unwrap(),
4c5f6e95df84 rust: make `Revision` a newtype
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50989
diff changeset
1008 Revision(-1)
4c5f6e95df84 rust: make `Revision` a newtype
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50989
diff changeset
1009 );
4c5f6e95df84 rust: make `Revision` a newtype
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50989
diff changeset
1010 assert_eq!(revlog.rev_from_node(node0.into()).unwrap(), Revision(0));
4c5f6e95df84 rust: make `Revision` a newtype
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50989
diff changeset
1011 assert_eq!(revlog.rev_from_node(node1.into()).unwrap(), Revision(1));
50741
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1012 assert_eq!(
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1013 revlog
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1014 .rev_from_node(NodePrefix::from_hex("000").unwrap())
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1015 .unwrap(),
50990
4c5f6e95df84 rust: make `Revision` a newtype
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50989
diff changeset
1016 Revision(-1)
50741
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1017 );
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1018 assert_eq!(
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1019 revlog
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1020 .rev_from_node(NodePrefix::from_hex("b00").unwrap())
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1021 .unwrap(),
50990
4c5f6e95df84 rust: make `Revision` a newtype
Rapha?l Gom?s <rgomes@octobus.net>
parents: 50989
diff changeset
1022 Revision(1)
50741
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1023 );
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1024 // RevlogError does not implement PartialEq
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1025 // (ultimately because io::Error does not)
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1026 match revlog
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1027 .rev_from_node(NodePrefix::from_hex("00").unwrap())
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1028 .expect_err("Expected to give AmbiguousPrefix error")
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1029 {
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1030 RevlogError::AmbiguousPrefix => (),
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1031 e => {
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1032 panic!("Got another error than AmbiguousPrefix: {:?}", e);
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1033 }
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1034 };
bca4037306da rust-revlog: fix incorrect results with NULL_NODE prefixes
Georges Racinet <georges.racinet@octobus.net>
parents: 50740
diff changeset
1035 }
50010
750409505286 rust-clippy: merge "revlog" module definition and struct implementation
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47989
diff changeset
1036 }