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In order to store conflicts in the commit, as conflicts between a set of trees, we want to be able merge those trees on the fly. This introduces a type for that. It has a `Merge(Conflict(Tree))` variant, where the individual trees cannot have path-level conflicts. It also has a `Legacy(Tree)` variant, which does allow path-level conflicts. I think that should help us with the migration.
181 lines
6.6 KiB
Rust
181 lines
6.6 KiB
Rust
// Copyright 2023 The Jujutsu Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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use jj_lib::backend::{FileId, TreeValue};
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use jj_lib::conflicts::Conflict;
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use jj_lib::merged_tree::{MergedTree, MergedTreeValue};
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use jj_lib::repo::Repo;
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use jj_lib::repo_path::{RepoPath, RepoPathComponent, RepoPathJoin};
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use testutils::{write_file, write_normal_file, TestRepo};
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fn file_value(file_id: &FileId) -> TreeValue {
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TreeValue::File {
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id: file_id.clone(),
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executable: false,
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}
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}
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#[test]
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fn test_from_legacy_tree() {
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let test_repo = TestRepo::init(true);
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let repo = &test_repo.repo;
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let store = repo.store();
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let mut tree_builder = store.tree_builder(repo.store().empty_tree_id().clone());
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// file1: regular file without conflicts
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let file1_path = RepoPath::from_internal_string("no_conflict");
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let file1_id = write_normal_file(&mut tree_builder, &file1_path, "foo");
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// file2: 3-way conflict
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let file2_path = RepoPath::from_internal_string("3way");
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let file2_v1_id = write_file(store.as_ref(), &file2_path, "file2_v1");
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let file2_v2_id = write_file(store.as_ref(), &file2_path, "file2_v2");
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let file2_v3_id = write_file(store.as_ref(), &file2_path, "file2_v3");
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let file2_conflict = Conflict::new(
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vec![Some(file_value(&file2_v1_id))],
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vec![
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Some(file_value(&file2_v2_id)),
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Some(file_value(&file2_v3_id)),
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],
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);
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let file2_conflict_id = store.write_conflict(&file2_path, &file2_conflict).unwrap();
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tree_builder.set(file2_path.clone(), TreeValue::Conflict(file2_conflict_id));
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// file3: modify/delete conflict
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let file3_path = RepoPath::from_internal_string("modify_delete");
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let file3_v1_id = write_file(store.as_ref(), &file3_path, "file3_v1");
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let file3_v2_id = write_file(store.as_ref(), &file3_path, "file3_v2");
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let file3_conflict = Conflict::new(
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vec![Some(file_value(&file3_v1_id))],
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vec![Some(file_value(&file3_v2_id)), None],
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);
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let file3_conflict_id = store.write_conflict(&file3_path, &file3_conflict).unwrap();
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tree_builder.set(file3_path.clone(), TreeValue::Conflict(file3_conflict_id));
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// file4: add/add conflict
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let file4_path = RepoPath::from_internal_string("add_add");
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let file4_v1_id = write_file(store.as_ref(), &file4_path, "file4_v1");
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let file4_v2_id = write_file(store.as_ref(), &file4_path, "file4_v2");
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let file4_conflict = Conflict::new(
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vec![None],
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vec![
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Some(file_value(&file4_v1_id)),
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Some(file_value(&file4_v2_id)),
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],
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);
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let file4_conflict_id = store.write_conflict(&file4_path, &file4_conflict).unwrap();
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tree_builder.set(file4_path.clone(), TreeValue::Conflict(file4_conflict_id));
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// file5: 5-way conflict
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let file5_path = RepoPath::from_internal_string("5way");
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let file5_v1_id = write_file(store.as_ref(), &file5_path, "file5_v1");
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let file5_v2_id = write_file(store.as_ref(), &file5_path, "file5_v2");
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let file5_v3_id = write_file(store.as_ref(), &file5_path, "file5_v3");
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let file5_v4_id = write_file(store.as_ref(), &file5_path, "file5_v4");
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let file5_v5_id = write_file(store.as_ref(), &file5_path, "file5_v5");
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let file5_conflict = Conflict::new(
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vec![
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Some(file_value(&file5_v1_id)),
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Some(file_value(&file5_v2_id)),
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],
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vec![
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Some(file_value(&file5_v3_id)),
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Some(file_value(&file5_v4_id)),
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Some(file_value(&file5_v5_id)),
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],
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);
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let file5_conflict_id = store.write_conflict(&file5_path, &file5_conflict).unwrap();
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tree_builder.set(file5_path.clone(), TreeValue::Conflict(file5_conflict_id));
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// dir1: directory without conflicts
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let dir1_basename = RepoPathComponent::from("dir1");
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write_normal_file(
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&mut tree_builder,
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&RepoPath::root()
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.join(&dir1_basename)
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.join(&RepoPathComponent::from("file")),
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"foo",
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);
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let tree_id = tree_builder.write_tree();
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let tree = store.get_tree(&RepoPath::root(), &tree_id).unwrap();
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let merged_tree = MergedTree::from_legacy_tree(tree.clone());
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assert_eq!(
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merged_tree.value(&RepoPathComponent::from("missing")),
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MergedTreeValue::Resolved(None)
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);
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// file1: regular file without conflicts
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assert_eq!(
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merged_tree.value(&file1_path.components()[0]),
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MergedTreeValue::Resolved(Some(&TreeValue::File {
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id: file1_id,
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executable: false,
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}))
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);
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// file2: 3-way conflict
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assert_eq!(
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merged_tree.value(&file2_path.components()[0]),
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MergedTreeValue::Conflict(Conflict::new(
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vec![Some(file_value(&file2_v1_id)), None],
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vec![
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Some(file_value(&file2_v2_id)),
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Some(file_value(&file2_v3_id)),
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None,
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],
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))
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);
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// file3: modify/delete conflict
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assert_eq!(
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merged_tree.value(&file3_path.components()[0]),
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MergedTreeValue::Conflict(Conflict::new(
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vec![Some(file_value(&file3_v1_id)), None],
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vec![Some(file_value(&file3_v2_id)), None, None],
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))
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);
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// file4: add/add conflict
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assert_eq!(
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merged_tree.value(&file4_path.components()[0]),
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MergedTreeValue::Conflict(Conflict::new(
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vec![None, None],
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vec![
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Some(file_value(&file4_v1_id)),
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Some(file_value(&file4_v2_id)),
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None
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],
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))
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);
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// file5: 5-way conflict
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assert_eq!(
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merged_tree.value(&file5_path.components()[0]),
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MergedTreeValue::Conflict(Conflict::new(
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vec![
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Some(file_value(&file5_v1_id)),
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Some(file_value(&file5_v2_id)),
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],
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vec![
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Some(file_value(&file5_v3_id)),
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Some(file_value(&file5_v4_id)),
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Some(file_value(&file5_v5_id)),
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],
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))
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);
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// file6: directory without conflicts
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assert_eq!(
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merged_tree.value(&dir1_basename),
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MergedTreeValue::Resolved(tree.value(&dir1_basename))
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);
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}
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