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store: add function to look up MergedTree by MergedTreeId

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We'll start seeing `MergedTreeId` in more places and we'll want it to
be easy to look up the tree.
This commit is contained in:
Martin von Zweigbergk 2023-08-25 18:49:15 -07:00 committed by Martin von Zweigbergk
parent 2dd2e77170
commit 1577b408a6
2 changed files with 17 additions and 11 deletions
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11
lib/src/commit.rs
View file

@ -110,16 +110,7 @@ impl Commit {
}
pub fn merged_tree(&self) -> Result<MergedTree, BackendError> {
match &self.data.root_tree {
MergedTreeId::Legacy(id) => {
let tree = self.store.get_tree(&RepoPath::root(), id)?;
Ok(MergedTree::Legacy(tree))
}
MergedTreeId::Merge(ids) => {
let trees = ids.try_map(|id| self.store.get_tree(&RepoPath::root(), id))?;
Ok(MergedTree::Merge(trees))
}
}
self.store.get_root_tree(&self.data.root_tree)
}
// TODO(#1624): delete when all callers have been updated to support tree-level

17
lib/src/store.rs
View file

@ -21,10 +21,12 @@ use std::sync::{Arc, RwLock};
use crate::backend;
use crate::backend::{
Backend, BackendResult, ChangeId, CommitId, ConflictId, FileId, SymlinkId, TreeId, TreeValue,
Backend, BackendResult, ChangeId, CommitId, ConflictId, FileId, MergedTreeId, SymlinkId,
TreeId, TreeValue,
};
use crate::commit::Commit;
use crate::merge::Merge;
use crate::merged_tree::MergedTree;
use crate::repo_path::RepoPath;
use crate::tree::Tree;
use crate::tree_builder::TreeBuilder;
@ -125,6 +127,19 @@ impl Store {
Ok(data)
}
pub fn get_root_tree(self: &Arc<Self>, id: &MergedTreeId) -> BackendResult<MergedTree> {
match &id {
MergedTreeId::Legacy(id) => {
let tree = self.get_tree(&RepoPath::root(), id)?;
Ok(MergedTree::Legacy(tree))
}
MergedTreeId::Merge(ids) => {
let trees = ids.try_map(|id| self.get_tree(&RepoPath::root(), id))?;
Ok(MergedTree::Merge(trees))
}
}
}
pub fn write_tree(
self: &Arc<Self>,
path: &RepoPath,