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CanonPath: Support std::hash

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This commit is contained in:
Eelco Dolstra 2023-12-06 13:45:59 +01:00
parent 83c067c0fa
commit 504e4fc457
2 changed files with 12 additions and 1 deletions
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2
src/libfetchers/git-utils.cc
View file

@ -554,7 +554,7 @@ struct GitInputAccessor : InputAccessor
return toHash(*git_tree_entry_id(entry));
}
std::map<CanonPath, TreeEntry> lookupCache;
std::unordered_map<CanonPath, TreeEntry> lookupCache;
/* Recursively look up 'path' relative to the root. */
git_tree_entry * lookup(const CanonPath & path)

11
src/libutil/canon-path.hh
View file

@ -205,8 +205,19 @@ public:
* `CanonPath(this.makeRelative(x), this) == path`.
*/
std::string makeRelative(const CanonPath & path) const;
friend class std::hash<CanonPath>;
};
std::ostream & operator << (std::ostream & stream, const CanonPath & path);
}
template<>
struct std::hash<nix::CanonPath>
{
std::size_t operator ()(const nix::CanonPath & s) const noexcept
{
return std::hash<std::string>{}(s.path);
}
};