mirror of
https://github.com/martinvonz/jj.git
synced 2025-01-28 23:32:41 +00:00
fa5e40719c
I'm going to add a prefix resolution method to OpStore, but OpStore is unrelated to the index. I think ObjectId, HexPrefix, and PrefixResolution can be extracted to this module.
1537 lines
44 KiB
Rust
1537 lines
44 KiB
Rust
// Copyright 2021-2023 The Jujutsu Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// https://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#![allow(missing_docs)]
|
|
|
|
use std::collections::{HashMap, HashSet, VecDeque};
|
|
|
|
use crate::backend::CommitId;
|
|
|
|
#[derive(Debug, PartialEq, Eq, Clone, Hash)]
|
|
pub struct RevsetGraphEdge {
|
|
pub target: CommitId,
|
|
pub edge_type: RevsetGraphEdgeType,
|
|
}
|
|
|
|
impl RevsetGraphEdge {
|
|
pub fn missing(target: CommitId) -> Self {
|
|
Self {
|
|
target,
|
|
edge_type: RevsetGraphEdgeType::Missing,
|
|
}
|
|
}
|
|
|
|
pub fn direct(target: CommitId) -> Self {
|
|
Self {
|
|
target,
|
|
edge_type: RevsetGraphEdgeType::Direct,
|
|
}
|
|
}
|
|
|
|
pub fn indirect(target: CommitId) -> Self {
|
|
Self {
|
|
target,
|
|
edge_type: RevsetGraphEdgeType::Indirect,
|
|
}
|
|
}
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Eq, Clone, Copy, Hash)]
|
|
pub enum RevsetGraphEdgeType {
|
|
Missing,
|
|
Direct,
|
|
Indirect,
|
|
}
|
|
|
|
fn reachable_targets(edges: &[RevsetGraphEdge]) -> impl DoubleEndedIterator<Item = &CommitId> {
|
|
edges
|
|
.iter()
|
|
.filter(|edge| edge.edge_type != RevsetGraphEdgeType::Missing)
|
|
.map(|edge| &edge.target)
|
|
}
|
|
|
|
pub struct ReverseRevsetGraphIterator {
|
|
items: Vec<(CommitId, Vec<RevsetGraphEdge>)>,
|
|
}
|
|
|
|
impl ReverseRevsetGraphIterator {
|
|
pub fn new(input: impl IntoIterator<Item = (CommitId, Vec<RevsetGraphEdge>)>) -> Self {
|
|
let mut entries = vec![];
|
|
let mut reverse_edges: HashMap<CommitId, Vec<RevsetGraphEdge>> = HashMap::new();
|
|
for (commit_id, edges) in input {
|
|
for RevsetGraphEdge { target, edge_type } in edges {
|
|
reverse_edges
|
|
.entry(target)
|
|
.or_default()
|
|
.push(RevsetGraphEdge {
|
|
target: commit_id.clone(),
|
|
edge_type,
|
|
})
|
|
}
|
|
entries.push(commit_id);
|
|
}
|
|
|
|
let mut items = vec![];
|
|
for commit_id in entries.into_iter() {
|
|
let edges = reverse_edges.get(&commit_id).cloned().unwrap_or_default();
|
|
items.push((commit_id, edges));
|
|
}
|
|
Self { items }
|
|
}
|
|
}
|
|
|
|
impl Iterator for ReverseRevsetGraphIterator {
|
|
type Item = (CommitId, Vec<RevsetGraphEdge>);
|
|
|
|
fn next(&mut self) -> Option<Self::Item> {
|
|
self.items.pop()
|
|
}
|
|
}
|
|
|
|
/// Graph iterator adapter to group topological branches.
|
|
///
|
|
/// Basic idea is DFS from the heads. At fork point, the other descendant
|
|
/// branches will be visited. At merge point, the second (or the last) ancestor
|
|
/// branch will be visited first. This is practically [the same as Git][Git].
|
|
///
|
|
/// The branch containing the first commit in the input iterator will be emitted
|
|
/// first. It is often the working-copy ancestor branch. The other head branches
|
|
/// won't be enqueued eagerly, and will be emitted as late as possible.
|
|
///
|
|
/// [Git]: https://github.blog/2022-08-30-gits-database-internals-ii-commit-history-queries/#topological-sorting
|
|
#[derive(Clone, Debug)]
|
|
pub struct TopoGroupedRevsetGraphIterator<I> {
|
|
input_iter: I,
|
|
/// Graph nodes read from the input iterator but not yet emitted.
|
|
nodes: HashMap<CommitId, TopoGroupedGraphNode>,
|
|
/// Stack of graph nodes to be emitted.
|
|
emittable_ids: Vec<CommitId>,
|
|
/// List of new head nodes found while processing unpopulated nodes.
|
|
new_head_ids: VecDeque<CommitId>,
|
|
/// Set of nodes which may be ancestors of `new_head_ids`.
|
|
blocked_ids: HashSet<CommitId>,
|
|
}
|
|
|
|
#[derive(Clone, Debug, Default)]
|
|
struct TopoGroupedGraphNode {
|
|
/// Graph nodes which must be emitted before.
|
|
child_ids: HashSet<CommitId>,
|
|
/// Graph edges to parent nodes. `None` until this node is populated.
|
|
edges: Option<Vec<RevsetGraphEdge>>,
|
|
}
|
|
|
|
impl<I> TopoGroupedRevsetGraphIterator<I>
|
|
where
|
|
I: Iterator<Item = (CommitId, Vec<RevsetGraphEdge>)>,
|
|
{
|
|
/// Wraps the given iterator to group topological branches. The input
|
|
/// iterator must be topologically ordered.
|
|
pub fn new(input_iter: I) -> Self {
|
|
TopoGroupedRevsetGraphIterator {
|
|
input_iter,
|
|
nodes: HashMap::new(),
|
|
emittable_ids: Vec::new(),
|
|
new_head_ids: VecDeque::new(),
|
|
blocked_ids: HashSet::new(),
|
|
}
|
|
}
|
|
|
|
#[must_use]
|
|
fn populate_one(&mut self) -> Option<()> {
|
|
let (current_id, edges) = self.input_iter.next()?;
|
|
|
|
// Set up reverse reference
|
|
for parent_id in reachable_targets(&edges) {
|
|
let parent_node = self.nodes.entry(parent_id.clone()).or_default();
|
|
parent_node.child_ids.insert(current_id.clone());
|
|
}
|
|
|
|
// Populate the current node
|
|
if let Some(current_node) = self.nodes.get_mut(¤t_id) {
|
|
assert!(current_node.edges.is_none());
|
|
current_node.edges = Some(edges);
|
|
} else {
|
|
let current_node = TopoGroupedGraphNode {
|
|
edges: Some(edges),
|
|
..Default::default()
|
|
};
|
|
self.nodes.insert(current_id.clone(), current_node);
|
|
// Push to non-emitting list so the new head wouldn't be interleaved
|
|
self.new_head_ids.push_back(current_id);
|
|
}
|
|
|
|
Some(())
|
|
}
|
|
|
|
/// Enqueues the first new head which will unblock the waiting ancestors.
|
|
///
|
|
/// This does not move multiple head nodes to the queue at once because
|
|
/// heads may be connected to the fork points in arbitrary order.
|
|
fn flush_new_head(&mut self) {
|
|
assert!(!self.new_head_ids.is_empty());
|
|
if self.blocked_ids.is_empty() || self.new_head_ids.len() <= 1 {
|
|
// Fast path: orphaned or no choice
|
|
let new_head_id = self.new_head_ids.pop_front().unwrap();
|
|
self.emittable_ids.push(new_head_id);
|
|
self.blocked_ids.clear();
|
|
return;
|
|
}
|
|
|
|
// Mark descendant nodes reachable from the blocking nodes
|
|
let mut to_visit: Vec<&CommitId> = self
|
|
.blocked_ids
|
|
.iter()
|
|
.map(|id| {
|
|
// Borrow from self.nodes so self.blocked_ids can be mutated later
|
|
let (id, _) = self.nodes.get_key_value(id).unwrap();
|
|
id
|
|
})
|
|
.collect();
|
|
let mut visited: HashSet<&CommitId> = to_visit.iter().copied().collect();
|
|
while let Some(id) = to_visit.pop() {
|
|
let node = self.nodes.get(id).unwrap();
|
|
to_visit.extend(node.child_ids.iter().filter(|id| visited.insert(id)));
|
|
}
|
|
|
|
// Pick the first reachable head
|
|
let index = self
|
|
.new_head_ids
|
|
.iter()
|
|
.position(|id| visited.contains(id))
|
|
.expect("blocking head should exist");
|
|
let new_head_id = self.new_head_ids.remove(index).unwrap();
|
|
|
|
// Unmark ancestors of the selected head so they won't contribute to future
|
|
// new-head resolution within the newly-unblocked sub graph. The sub graph
|
|
// can have many fork points, and the corresponding heads should be picked in
|
|
// the fork-point order, not in the head appearance order.
|
|
to_visit.push(&new_head_id);
|
|
visited.remove(&new_head_id);
|
|
while let Some(id) = to_visit.pop() {
|
|
let node = self.nodes.get(id).unwrap();
|
|
if let Some(edges) = &node.edges {
|
|
to_visit.extend(reachable_targets(edges).filter(|id| visited.remove(id)));
|
|
}
|
|
}
|
|
self.blocked_ids.retain(|id| visited.contains(id));
|
|
self.emittable_ids.push(new_head_id);
|
|
}
|
|
|
|
#[must_use]
|
|
fn next_node(&mut self) -> Option<(CommitId, Vec<RevsetGraphEdge>)> {
|
|
// Based on Kahn's algorithm
|
|
loop {
|
|
if let Some(current_id) = self.emittable_ids.last() {
|
|
let Some(current_node) = self.nodes.get_mut(current_id) else {
|
|
// Queued twice because new children populated and emitted
|
|
self.emittable_ids.pop().unwrap();
|
|
continue;
|
|
};
|
|
if !current_node.child_ids.is_empty() {
|
|
// New children populated after emitting the other
|
|
let current_id = self.emittable_ids.pop().unwrap();
|
|
self.blocked_ids.insert(current_id);
|
|
continue;
|
|
}
|
|
let Some(edges) = current_node.edges.take() else {
|
|
// Not yet populated
|
|
self.populate_one().expect("parent node should exist");
|
|
continue;
|
|
};
|
|
// The second (or the last) parent will be visited first
|
|
let current_id = self.emittable_ids.pop().unwrap();
|
|
self.nodes.remove(¤t_id).unwrap();
|
|
for parent_id in reachable_targets(&edges) {
|
|
let parent_node = self.nodes.get_mut(parent_id).unwrap();
|
|
parent_node.child_ids.remove(¤t_id);
|
|
if parent_node.child_ids.is_empty() {
|
|
let reusable_id = self.blocked_ids.take(parent_id);
|
|
let parent_id = reusable_id.unwrap_or_else(|| parent_id.clone());
|
|
self.emittable_ids.push(parent_id);
|
|
} else {
|
|
self.blocked_ids.insert(parent_id.clone());
|
|
}
|
|
}
|
|
return Some((current_id, edges));
|
|
} else if !self.new_head_ids.is_empty() {
|
|
self.flush_new_head();
|
|
} else {
|
|
// Populate the first or orphan head
|
|
self.populate_one()?;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<I> Iterator for TopoGroupedRevsetGraphIterator<I>
|
|
where
|
|
I: Iterator<Item = (CommitId, Vec<RevsetGraphEdge>)>,
|
|
{
|
|
type Item = (CommitId, Vec<RevsetGraphEdge>);
|
|
|
|
fn next(&mut self) -> Option<Self::Item> {
|
|
if let Some(node) = self.next_node() {
|
|
Some(node)
|
|
} else {
|
|
assert!(self.nodes.is_empty(), "all nodes should have been emitted");
|
|
None
|
|
}
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use itertools::Itertools as _;
|
|
use renderdag::{Ancestor, GraphRowRenderer, Renderer as _};
|
|
|
|
use super::*;
|
|
use crate::object_id::ObjectId;
|
|
|
|
fn id(c: char) -> CommitId {
|
|
let d = u8::try_from(c).unwrap();
|
|
CommitId::new(vec![d])
|
|
}
|
|
|
|
fn missing(c: char) -> RevsetGraphEdge {
|
|
RevsetGraphEdge::missing(id(c))
|
|
}
|
|
|
|
fn direct(c: char) -> RevsetGraphEdge {
|
|
RevsetGraphEdge::direct(id(c))
|
|
}
|
|
|
|
fn indirect(c: char) -> RevsetGraphEdge {
|
|
RevsetGraphEdge::indirect(id(c))
|
|
}
|
|
|
|
fn format_edge(edge: &RevsetGraphEdge) -> String {
|
|
let c = char::from(edge.target.as_bytes()[0]);
|
|
match edge.edge_type {
|
|
RevsetGraphEdgeType::Missing => format!("missing({c})"),
|
|
RevsetGraphEdgeType::Direct => format!("direct({c})"),
|
|
RevsetGraphEdgeType::Indirect => format!("indirect({c})"),
|
|
}
|
|
}
|
|
|
|
fn format_graph(
|
|
graph_iter: impl IntoIterator<Item = (CommitId, Vec<RevsetGraphEdge>)>,
|
|
) -> String {
|
|
let mut renderer = GraphRowRenderer::new()
|
|
.output()
|
|
.with_min_row_height(2)
|
|
.build_box_drawing();
|
|
graph_iter
|
|
.into_iter()
|
|
.map(|(id, edges)| {
|
|
let glyph = char::from(id.as_bytes()[0]).to_string();
|
|
let message = edges.iter().map(format_edge).join(", ");
|
|
let parents = edges
|
|
.into_iter()
|
|
.map(|edge| match edge.edge_type {
|
|
RevsetGraphEdgeType::Missing => Ancestor::Anonymous,
|
|
RevsetGraphEdgeType::Direct => Ancestor::Parent(edge.target),
|
|
RevsetGraphEdgeType::Indirect => Ancestor::Ancestor(edge.target),
|
|
})
|
|
.collect();
|
|
renderer.next_row(id, parents, glyph, message)
|
|
})
|
|
.collect()
|
|
}
|
|
|
|
#[test]
|
|
fn test_format_graph() {
|
|
let graph = vec![
|
|
(id('D'), vec![direct('C'), indirect('B')]),
|
|
(id('C'), vec![direct('A')]),
|
|
(id('B'), vec![missing('X')]),
|
|
(id('A'), vec![]),
|
|
];
|
|
insta::assert_snapshot!(format_graph(graph), @r###"
|
|
D direct(C), indirect(B)
|
|
├─╮
|
|
C ╷ direct(A)
|
|
│ ╷
|
|
│ B missing(X)
|
|
│ │
|
|
│ ~
|
|
│
|
|
A
|
|
|
|
"###);
|
|
}
|
|
|
|
fn topo_grouped<I>(graph_iter: I) -> TopoGroupedRevsetGraphIterator<I::IntoIter>
|
|
where
|
|
I: IntoIterator<Item = (CommitId, Vec<RevsetGraphEdge>)>,
|
|
{
|
|
TopoGroupedRevsetGraphIterator::new(graph_iter.into_iter())
|
|
}
|
|
|
|
#[test]
|
|
fn test_topo_grouped_multiple_roots() {
|
|
let graph = vec![
|
|
(id('C'), vec![missing('Y')]),
|
|
(id('B'), vec![missing('X')]),
|
|
(id('A'), vec![]),
|
|
];
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
C missing(Y)
|
|
│
|
|
~
|
|
|
|
B missing(X)
|
|
│
|
|
~
|
|
|
|
A
|
|
"###);
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
C missing(Y)
|
|
│
|
|
~
|
|
|
|
B missing(X)
|
|
│
|
|
~
|
|
|
|
A
|
|
"###);
|
|
|
|
// All nodes can be lazily emitted.
|
|
let mut iter = topo_grouped(graph.iter().cloned().peekable());
|
|
assert_eq!(iter.next().unwrap().0, id('C'));
|
|
assert_eq!(iter.input_iter.peek().unwrap().0, id('B'));
|
|
assert_eq!(iter.next().unwrap().0, id('B'));
|
|
assert_eq!(iter.input_iter.peek().unwrap().0, id('A'));
|
|
}
|
|
|
|
#[test]
|
|
fn test_topo_grouped_trivial_fork() {
|
|
let graph = vec![
|
|
(id('E'), vec![direct('B')]),
|
|
(id('D'), vec![direct('A')]),
|
|
(id('C'), vec![direct('B')]),
|
|
(id('B'), vec![direct('A')]),
|
|
(id('A'), vec![]),
|
|
];
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
E direct(B)
|
|
│
|
|
│ D direct(A)
|
|
│ │
|
|
│ │ C direct(B)
|
|
├───╯
|
|
B │ direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
// D-A is found earlier than B-A, but B is emitted first because it belongs to
|
|
// the emitting branch.
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
E direct(B)
|
|
│
|
|
│ C direct(B)
|
|
├─╯
|
|
B direct(A)
|
|
│
|
|
│ D direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
|
|
// E can be lazy, then D and C will be queued.
|
|
let mut iter = topo_grouped(graph.iter().cloned().peekable());
|
|
assert_eq!(iter.next().unwrap().0, id('E'));
|
|
assert_eq!(iter.input_iter.peek().unwrap().0, id('D'));
|
|
assert_eq!(iter.next().unwrap().0, id('C'));
|
|
assert_eq!(iter.input_iter.peek().unwrap().0, id('B'));
|
|
assert_eq!(iter.next().unwrap().0, id('B'));
|
|
assert_eq!(iter.input_iter.peek().unwrap().0, id('A'));
|
|
}
|
|
|
|
#[test]
|
|
fn test_topo_grouped_fork_interleaved() {
|
|
let graph = vec![
|
|
(id('F'), vec![direct('D')]),
|
|
(id('E'), vec![direct('C')]),
|
|
(id('D'), vec![direct('B')]),
|
|
(id('C'), vec![direct('B')]),
|
|
(id('B'), vec![direct('A')]),
|
|
(id('A'), vec![]),
|
|
];
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
F direct(D)
|
|
│
|
|
│ E direct(C)
|
|
│ │
|
|
D │ direct(B)
|
|
│ │
|
|
│ C direct(B)
|
|
├─╯
|
|
B direct(A)
|
|
│
|
|
A
|
|
|
|
"###);
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
F direct(D)
|
|
│
|
|
D direct(B)
|
|
│
|
|
│ E direct(C)
|
|
│ │
|
|
│ C direct(B)
|
|
├─╯
|
|
B direct(A)
|
|
│
|
|
A
|
|
|
|
"###);
|
|
|
|
// F can be lazy, then E will be queued, then C.
|
|
let mut iter = topo_grouped(graph.iter().cloned().peekable());
|
|
assert_eq!(iter.next().unwrap().0, id('F'));
|
|
assert_eq!(iter.input_iter.peek().unwrap().0, id('E'));
|
|
assert_eq!(iter.next().unwrap().0, id('D'));
|
|
assert_eq!(iter.input_iter.peek().unwrap().0, id('C'));
|
|
assert_eq!(iter.next().unwrap().0, id('E'));
|
|
assert_eq!(iter.input_iter.peek().unwrap().0, id('B'));
|
|
}
|
|
|
|
#[test]
|
|
fn test_topo_grouped_fork_multiple_heads() {
|
|
let graph = vec![
|
|
(id('I'), vec![direct('E')]),
|
|
(id('H'), vec![direct('C')]),
|
|
(id('G'), vec![direct('A')]),
|
|
(id('F'), vec![direct('E')]),
|
|
(id('E'), vec![direct('C')]),
|
|
(id('D'), vec![direct('C')]),
|
|
(id('C'), vec![direct('A')]),
|
|
(id('B'), vec![direct('A')]),
|
|
(id('A'), vec![]),
|
|
];
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
I direct(E)
|
|
│
|
|
│ H direct(C)
|
|
│ │
|
|
│ │ G direct(A)
|
|
│ │ │
|
|
│ │ │ F direct(E)
|
|
├─────╯
|
|
E │ │ direct(C)
|
|
├─╯ │
|
|
│ D │ direct(C)
|
|
├─╯ │
|
|
C │ direct(A)
|
|
├───╯
|
|
│ B direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
I direct(E)
|
|
│
|
|
│ F direct(E)
|
|
├─╯
|
|
E direct(C)
|
|
│
|
|
│ H direct(C)
|
|
├─╯
|
|
│ D direct(C)
|
|
├─╯
|
|
C direct(A)
|
|
│
|
|
│ G direct(A)
|
|
├─╯
|
|
│ B direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
|
|
// I can be lazy, then H, G, and F will be queued.
|
|
let mut iter = topo_grouped(graph.iter().cloned().peekable());
|
|
assert_eq!(iter.next().unwrap().0, id('I'));
|
|
assert_eq!(iter.input_iter.peek().unwrap().0, id('H'));
|
|
assert_eq!(iter.next().unwrap().0, id('F'));
|
|
assert_eq!(iter.input_iter.peek().unwrap().0, id('E'));
|
|
}
|
|
|
|
#[test]
|
|
fn test_topo_grouped_fork_parallel() {
|
|
let graph = vec![
|
|
// Pull all sub graphs in reverse order:
|
|
(id('I'), vec![direct('A')]),
|
|
(id('H'), vec![direct('C')]),
|
|
(id('G'), vec![direct('E')]),
|
|
// Orphan sub graph G,F-E:
|
|
(id('F'), vec![direct('E')]),
|
|
(id('E'), vec![missing('Y')]),
|
|
// Orphan sub graph H,D-C:
|
|
(id('D'), vec![direct('C')]),
|
|
(id('C'), vec![missing('X')]),
|
|
// Orphan sub graph I,B-A:
|
|
(id('B'), vec![direct('A')]),
|
|
(id('A'), vec![]),
|
|
];
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
I direct(A)
|
|
│
|
|
│ H direct(C)
|
|
│ │
|
|
│ │ G direct(E)
|
|
│ │ │
|
|
│ │ │ F direct(E)
|
|
│ │ ├─╯
|
|
│ │ E missing(Y)
|
|
│ │ │
|
|
│ │ ~
|
|
│ │
|
|
│ │ D direct(C)
|
|
│ ├─╯
|
|
│ C missing(X)
|
|
│ │
|
|
│ ~
|
|
│
|
|
│ B direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
I direct(A)
|
|
│
|
|
│ B direct(A)
|
|
├─╯
|
|
A
|
|
|
|
H direct(C)
|
|
│
|
|
│ D direct(C)
|
|
├─╯
|
|
C missing(X)
|
|
│
|
|
~
|
|
|
|
G direct(E)
|
|
│
|
|
│ F direct(E)
|
|
├─╯
|
|
E missing(Y)
|
|
│
|
|
~
|
|
"###);
|
|
}
|
|
|
|
#[test]
|
|
fn test_topo_grouped_fork_nested() {
|
|
fn sub_graph(
|
|
chars: impl IntoIterator<Item = char>,
|
|
root_edges: Vec<RevsetGraphEdge>,
|
|
) -> Vec<(CommitId, Vec<RevsetGraphEdge>)> {
|
|
let [b, c, d, e, f]: [char; 5] = chars.into_iter().collect_vec().try_into().unwrap();
|
|
vec![
|
|
(id(f), vec![direct(c)]),
|
|
(id(e), vec![direct(b)]),
|
|
(id(d), vec![direct(c)]),
|
|
(id(c), vec![direct(b)]),
|
|
(id(b), root_edges),
|
|
]
|
|
}
|
|
|
|
// One nested fork sub graph from A
|
|
let graph = itertools::chain!(
|
|
vec![(id('G'), vec![direct('A')])],
|
|
sub_graph('B'..='F', vec![direct('A')]),
|
|
vec![(id('A'), vec![])],
|
|
)
|
|
.collect_vec();
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
G direct(A)
|
|
│
|
|
│ F direct(C)
|
|
│ │
|
|
│ │ E direct(B)
|
|
│ │ │
|
|
│ │ │ D direct(C)
|
|
│ ├───╯
|
|
│ C │ direct(B)
|
|
│ ├─╯
|
|
│ B direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
// A::F is picked at A, and A will be unblocked. Then, C::D at C, ...
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
G direct(A)
|
|
│
|
|
│ F direct(C)
|
|
│ │
|
|
│ │ D direct(C)
|
|
│ ├─╯
|
|
│ C direct(B)
|
|
│ │
|
|
│ │ E direct(B)
|
|
│ ├─╯
|
|
│ B direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
|
|
// Two nested fork sub graphs from A
|
|
let graph = itertools::chain!(
|
|
vec![(id('L'), vec![direct('A')])],
|
|
sub_graph('G'..='K', vec![direct('A')]),
|
|
sub_graph('B'..='F', vec![direct('A')]),
|
|
vec![(id('A'), vec![])],
|
|
)
|
|
.collect_vec();
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
L direct(A)
|
|
│
|
|
│ K direct(H)
|
|
│ │
|
|
│ │ J direct(G)
|
|
│ │ │
|
|
│ │ │ I direct(H)
|
|
│ ├───╯
|
|
│ H │ direct(G)
|
|
│ ├─╯
|
|
│ G direct(A)
|
|
├─╯
|
|
│ F direct(C)
|
|
│ │
|
|
│ │ E direct(B)
|
|
│ │ │
|
|
│ │ │ D direct(C)
|
|
│ ├───╯
|
|
│ C │ direct(B)
|
|
│ ├─╯
|
|
│ B direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
// A::K is picked at A, and A will be unblocked. Then, H::I at H, ...
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
L direct(A)
|
|
│
|
|
│ K direct(H)
|
|
│ │
|
|
│ │ I direct(H)
|
|
│ ├─╯
|
|
│ H direct(G)
|
|
│ │
|
|
│ │ J direct(G)
|
|
│ ├─╯
|
|
│ G direct(A)
|
|
├─╯
|
|
│ F direct(C)
|
|
│ │
|
|
│ │ D direct(C)
|
|
│ ├─╯
|
|
│ C direct(B)
|
|
│ │
|
|
│ │ E direct(B)
|
|
│ ├─╯
|
|
│ B direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
|
|
// Two nested fork sub graphs from A, interleaved
|
|
let graph = itertools::chain!(
|
|
vec![(id('L'), vec![direct('A')])],
|
|
sub_graph(['C', 'E', 'G', 'I', 'K'], vec![direct('A')]),
|
|
sub_graph(['B', 'D', 'F', 'H', 'J'], vec![direct('A')]),
|
|
vec![(id('A'), vec![])],
|
|
)
|
|
.sorted_by(|(id1, _), (id2, _)| id2.cmp(id1))
|
|
.collect_vec();
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
L direct(A)
|
|
│
|
|
│ K direct(E)
|
|
│ │
|
|
│ │ J direct(D)
|
|
│ │ │
|
|
│ │ │ I direct(C)
|
|
│ │ │ │
|
|
│ │ │ │ H direct(B)
|
|
│ │ │ │ │
|
|
│ │ │ │ │ G direct(E)
|
|
│ ├───────╯
|
|
│ │ │ │ │ F direct(D)
|
|
│ │ ├─────╯
|
|
│ E │ │ │ direct(C)
|
|
│ ├───╯ │
|
|
│ │ D │ direct(B)
|
|
│ │ ├───╯
|
|
│ C │ direct(A)
|
|
├─╯ │
|
|
│ B direct(A)
|
|
├───╯
|
|
A
|
|
|
|
"###);
|
|
// A::K is picked at A, and A will be unblocked. Then, E::G at E, ...
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
L direct(A)
|
|
│
|
|
│ K direct(E)
|
|
│ │
|
|
│ │ G direct(E)
|
|
│ ├─╯
|
|
│ E direct(C)
|
|
│ │
|
|
│ │ I direct(C)
|
|
│ ├─╯
|
|
│ C direct(A)
|
|
├─╯
|
|
│ J direct(D)
|
|
│ │
|
|
│ │ F direct(D)
|
|
│ ├─╯
|
|
│ D direct(B)
|
|
│ │
|
|
│ │ H direct(B)
|
|
│ ├─╯
|
|
│ B direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
|
|
// Merged fork sub graphs at K
|
|
let graph = itertools::chain!(
|
|
vec![(id('K'), vec![direct('E'), direct('J')])],
|
|
sub_graph('F'..='J', vec![missing('Y')]),
|
|
sub_graph('A'..='E', vec![missing('X')]),
|
|
)
|
|
.collect_vec();
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
K direct(E), direct(J)
|
|
├─╮
|
|
│ J direct(G)
|
|
│ │
|
|
│ │ I direct(F)
|
|
│ │ │
|
|
│ │ │ H direct(G)
|
|
│ ├───╯
|
|
│ G │ direct(F)
|
|
│ ├─╯
|
|
│ F missing(Y)
|
|
│ │
|
|
│ ~
|
|
│
|
|
E direct(B)
|
|
│
|
|
│ D direct(A)
|
|
│ │
|
|
│ │ C direct(B)
|
|
├───╯
|
|
B │ direct(A)
|
|
├─╯
|
|
A missing(X)
|
|
│
|
|
~
|
|
"###);
|
|
// K-E,J is resolved without queuing new heads. Then, G::H, F::I, B::C, and
|
|
// A::D.
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
K direct(E), direct(J)
|
|
├─╮
|
|
│ J direct(G)
|
|
│ │
|
|
E │ direct(B)
|
|
│ │
|
|
│ │ H direct(G)
|
|
│ ├─╯
|
|
│ G direct(F)
|
|
│ │
|
|
│ │ I direct(F)
|
|
│ ├─╯
|
|
│ F missing(Y)
|
|
│ │
|
|
│ ~
|
|
│
|
|
│ C direct(B)
|
|
├─╯
|
|
B direct(A)
|
|
│
|
|
│ D direct(A)
|
|
├─╯
|
|
A missing(X)
|
|
│
|
|
~
|
|
"###);
|
|
|
|
// Merged fork sub graphs at K, interleaved
|
|
let graph = itertools::chain!(
|
|
vec![(id('K'), vec![direct('I'), direct('J')])],
|
|
sub_graph(['B', 'D', 'F', 'H', 'J'], vec![missing('Y')]),
|
|
sub_graph(['A', 'C', 'E', 'G', 'I'], vec![missing('X')]),
|
|
)
|
|
.sorted_by(|(id1, _), (id2, _)| id2.cmp(id1))
|
|
.collect_vec();
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
K direct(I), direct(J)
|
|
├─╮
|
|
│ J direct(D)
|
|
│ │
|
|
I │ direct(C)
|
|
│ │
|
|
│ │ H direct(B)
|
|
│ │ │
|
|
│ │ │ G direct(A)
|
|
│ │ │ │
|
|
│ │ │ │ F direct(D)
|
|
│ ├─────╯
|
|
│ │ │ │ E direct(C)
|
|
├───────╯
|
|
│ D │ │ direct(B)
|
|
│ ├─╯ │
|
|
C │ │ direct(A)
|
|
├─────╯
|
|
│ B missing(Y)
|
|
│ │
|
|
│ ~
|
|
│
|
|
A missing(X)
|
|
│
|
|
~
|
|
"###);
|
|
// K-I,J is resolved without queuing new heads. Then, D::F, B::H, C::E, and
|
|
// A::G.
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
K direct(I), direct(J)
|
|
├─╮
|
|
│ J direct(D)
|
|
│ │
|
|
I │ direct(C)
|
|
│ │
|
|
│ │ F direct(D)
|
|
│ ├─╯
|
|
│ D direct(B)
|
|
│ │
|
|
│ │ H direct(B)
|
|
│ ├─╯
|
|
│ B missing(Y)
|
|
│ │
|
|
│ ~
|
|
│
|
|
│ E direct(C)
|
|
├─╯
|
|
C direct(A)
|
|
│
|
|
│ G direct(A)
|
|
├─╯
|
|
A missing(X)
|
|
│
|
|
~
|
|
"###);
|
|
}
|
|
|
|
#[test]
|
|
fn test_topo_grouped_merge_interleaved() {
|
|
let graph = vec![
|
|
(id('F'), vec![direct('E')]),
|
|
(id('E'), vec![direct('C'), direct('D')]),
|
|
(id('D'), vec![direct('B')]),
|
|
(id('C'), vec![direct('A')]),
|
|
(id('B'), vec![direct('A')]),
|
|
(id('A'), vec![]),
|
|
];
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
F direct(E)
|
|
│
|
|
E direct(C), direct(D)
|
|
├─╮
|
|
│ D direct(B)
|
|
│ │
|
|
C │ direct(A)
|
|
│ │
|
|
│ B direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
F direct(E)
|
|
│
|
|
E direct(C), direct(D)
|
|
├─╮
|
|
│ D direct(B)
|
|
│ │
|
|
│ B direct(A)
|
|
│ │
|
|
C │ direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
|
|
// F, E, and D can be lazy, then C will be queued, then B.
|
|
let mut iter = topo_grouped(graph.iter().cloned().peekable());
|
|
assert_eq!(iter.next().unwrap().0, id('F'));
|
|
assert_eq!(iter.input_iter.peek().unwrap().0, id('E'));
|
|
assert_eq!(iter.next().unwrap().0, id('E'));
|
|
assert_eq!(iter.input_iter.peek().unwrap().0, id('D'));
|
|
assert_eq!(iter.next().unwrap().0, id('D'));
|
|
assert_eq!(iter.input_iter.peek().unwrap().0, id('C'));
|
|
assert_eq!(iter.next().unwrap().0, id('B'));
|
|
assert_eq!(iter.input_iter.peek().unwrap().0, id('A'));
|
|
}
|
|
|
|
#[test]
|
|
fn test_topo_grouped_merge_but_missing() {
|
|
let graph = vec![
|
|
(id('E'), vec![direct('D')]),
|
|
(id('D'), vec![missing('Y'), direct('C')]),
|
|
(id('C'), vec![direct('B'), missing('X')]),
|
|
(id('B'), vec![direct('A')]),
|
|
(id('A'), vec![]),
|
|
];
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
E direct(D)
|
|
│
|
|
D missing(Y), direct(C)
|
|
├─╮
|
|
│ │
|
|
~ │
|
|
│
|
|
C direct(B), missing(X)
|
|
╭─┤
|
|
│ │
|
|
~ │
|
|
│
|
|
B direct(A)
|
|
│
|
|
A
|
|
|
|
"###);
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
E direct(D)
|
|
│
|
|
D missing(Y), direct(C)
|
|
├─╮
|
|
│ │
|
|
~ │
|
|
│
|
|
C direct(B), missing(X)
|
|
╭─┤
|
|
│ │
|
|
~ │
|
|
│
|
|
B direct(A)
|
|
│
|
|
A
|
|
|
|
"###);
|
|
|
|
// All nodes can be lazily emitted.
|
|
let mut iter = topo_grouped(graph.iter().cloned().peekable());
|
|
assert_eq!(iter.next().unwrap().0, id('E'));
|
|
assert_eq!(iter.input_iter.peek().unwrap().0, id('D'));
|
|
assert_eq!(iter.next().unwrap().0, id('D'));
|
|
assert_eq!(iter.input_iter.peek().unwrap().0, id('C'));
|
|
assert_eq!(iter.next().unwrap().0, id('C'));
|
|
assert_eq!(iter.input_iter.peek().unwrap().0, id('B'));
|
|
assert_eq!(iter.next().unwrap().0, id('B'));
|
|
assert_eq!(iter.input_iter.peek().unwrap().0, id('A'));
|
|
}
|
|
|
|
#[test]
|
|
fn test_topo_grouped_merge_criss_cross() {
|
|
let graph = vec![
|
|
(id('G'), vec![direct('E')]),
|
|
(id('F'), vec![direct('D')]),
|
|
(id('E'), vec![direct('B'), direct('C')]),
|
|
(id('D'), vec![direct('B'), direct('C')]),
|
|
(id('C'), vec![direct('A')]),
|
|
(id('B'), vec![direct('A')]),
|
|
(id('A'), vec![]),
|
|
];
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
G direct(E)
|
|
│
|
|
│ F direct(D)
|
|
│ │
|
|
E │ direct(B), direct(C)
|
|
├───╮
|
|
│ D │ direct(B), direct(C)
|
|
╭─┴─╮
|
|
│ C direct(A)
|
|
│ │
|
|
B │ direct(A)
|
|
├───╯
|
|
A
|
|
|
|
"###);
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
G direct(E)
|
|
│
|
|
E direct(B), direct(C)
|
|
├─╮
|
|
│ │ F direct(D)
|
|
│ │ │
|
|
│ │ D direct(B), direct(C)
|
|
╭─┬─╯
|
|
│ C direct(A)
|
|
│ │
|
|
B │ direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
}
|
|
|
|
#[test]
|
|
fn test_topo_grouped_merge_descendants_interleaved() {
|
|
let graph = vec![
|
|
(id('H'), vec![direct('F')]),
|
|
(id('G'), vec![direct('E')]),
|
|
(id('F'), vec![direct('D')]),
|
|
(id('E'), vec![direct('C')]),
|
|
(id('D'), vec![direct('C'), direct('B')]),
|
|
(id('C'), vec![direct('A')]),
|
|
(id('B'), vec![direct('A')]),
|
|
(id('A'), vec![]),
|
|
];
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
H direct(F)
|
|
│
|
|
│ G direct(E)
|
|
│ │
|
|
F │ direct(D)
|
|
│ │
|
|
│ E direct(C)
|
|
│ │
|
|
D │ direct(C), direct(B)
|
|
├─╮
|
|
│ C direct(A)
|
|
│ │
|
|
B │ direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
H direct(F)
|
|
│
|
|
F direct(D)
|
|
│
|
|
D direct(C), direct(B)
|
|
├─╮
|
|
│ B direct(A)
|
|
│ │
|
|
│ │ G direct(E)
|
|
│ │ │
|
|
│ │ E direct(C)
|
|
├───╯
|
|
C │ direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
}
|
|
|
|
#[test]
|
|
fn test_topo_grouped_merge_multiple_roots() {
|
|
let graph = vec![
|
|
(id('D'), vec![direct('C')]),
|
|
(id('C'), vec![direct('B'), direct('A')]),
|
|
(id('B'), vec![missing('X')]),
|
|
(id('A'), vec![]),
|
|
];
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
D direct(C)
|
|
│
|
|
C direct(B), direct(A)
|
|
├─╮
|
|
B │ missing(X)
|
|
│ │
|
|
~ │
|
|
│
|
|
A
|
|
|
|
"###);
|
|
// A is emitted first because it's the second parent.
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
D direct(C)
|
|
│
|
|
C direct(B), direct(A)
|
|
├─╮
|
|
│ A
|
|
│
|
|
B missing(X)
|
|
│
|
|
~
|
|
"###);
|
|
}
|
|
|
|
#[test]
|
|
fn test_topo_grouped_merge_stairs() {
|
|
let graph = vec![
|
|
// Merge topic branches one by one:
|
|
(id('J'), vec![direct('I'), direct('G')]),
|
|
(id('I'), vec![direct('H'), direct('E')]),
|
|
(id('H'), vec![direct('D'), direct('F')]),
|
|
// Topic branches:
|
|
(id('G'), vec![direct('D')]),
|
|
(id('F'), vec![direct('C')]),
|
|
(id('E'), vec![direct('B')]),
|
|
// Base nodes:
|
|
(id('D'), vec![direct('C')]),
|
|
(id('C'), vec![direct('B')]),
|
|
(id('B'), vec![direct('A')]),
|
|
(id('A'), vec![]),
|
|
];
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
J direct(I), direct(G)
|
|
├─╮
|
|
I │ direct(H), direct(E)
|
|
├───╮
|
|
H │ │ direct(D), direct(F)
|
|
├─────╮
|
|
│ G │ │ direct(D)
|
|
├─╯ │ │
|
|
│ │ F direct(C)
|
|
│ │ │
|
|
│ E │ direct(B)
|
|
│ │ │
|
|
D │ │ direct(C)
|
|
├─────╯
|
|
C │ direct(B)
|
|
├───╯
|
|
B direct(A)
|
|
│
|
|
A
|
|
|
|
"###);
|
|
// Second branches are visited first.
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
J direct(I), direct(G)
|
|
├─╮
|
|
│ G direct(D)
|
|
│ │
|
|
I │ direct(H), direct(E)
|
|
├───╮
|
|
│ │ E direct(B)
|
|
│ │ │
|
|
H │ │ direct(D), direct(F)
|
|
├─╮ │
|
|
F │ │ direct(C)
|
|
│ │ │
|
|
│ D │ direct(C)
|
|
├─╯ │
|
|
C │ direct(B)
|
|
├───╯
|
|
B direct(A)
|
|
│
|
|
A
|
|
|
|
"###);
|
|
}
|
|
|
|
#[test]
|
|
fn test_topo_grouped_merge_and_fork() {
|
|
let graph = vec![
|
|
(id('J'), vec![direct('F')]),
|
|
(id('I'), vec![direct('E')]),
|
|
(id('H'), vec![direct('G')]),
|
|
(id('G'), vec![direct('D'), direct('E')]),
|
|
(id('F'), vec![direct('C')]),
|
|
(id('E'), vec![direct('B')]),
|
|
(id('D'), vec![direct('B')]),
|
|
(id('C'), vec![direct('A')]),
|
|
(id('B'), vec![direct('A')]),
|
|
(id('A'), vec![]),
|
|
];
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
J direct(F)
|
|
│
|
|
│ I direct(E)
|
|
│ │
|
|
│ │ H direct(G)
|
|
│ │ │
|
|
│ │ G direct(D), direct(E)
|
|
│ ╭─┤
|
|
F │ │ direct(C)
|
|
│ │ │
|
|
│ E │ direct(B)
|
|
│ │ │
|
|
│ │ D direct(B)
|
|
│ ├─╯
|
|
C │ direct(A)
|
|
│ │
|
|
│ B direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
J direct(F)
|
|
│
|
|
F direct(C)
|
|
│
|
|
C direct(A)
|
|
│
|
|
│ I direct(E)
|
|
│ │
|
|
│ │ H direct(G)
|
|
│ │ │
|
|
│ │ G direct(D), direct(E)
|
|
│ ╭─┤
|
|
│ E │ direct(B)
|
|
│ │ │
|
|
│ │ D direct(B)
|
|
│ ├─╯
|
|
│ B direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
}
|
|
|
|
#[test]
|
|
fn test_topo_grouped_merge_and_fork_multiple_roots() {
|
|
let graph = vec![
|
|
(id('J'), vec![direct('F')]),
|
|
(id('I'), vec![direct('G')]),
|
|
(id('H'), vec![direct('E')]),
|
|
(id('G'), vec![direct('E'), direct('B')]),
|
|
(id('F'), vec![direct('D')]),
|
|
(id('E'), vec![direct('C')]),
|
|
(id('D'), vec![direct('A')]),
|
|
(id('C'), vec![direct('A')]),
|
|
(id('B'), vec![missing('X')]),
|
|
(id('A'), vec![]),
|
|
];
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
J direct(F)
|
|
│
|
|
│ I direct(G)
|
|
│ │
|
|
│ │ H direct(E)
|
|
│ │ │
|
|
│ G │ direct(E), direct(B)
|
|
│ ├─╮
|
|
F │ │ direct(D)
|
|
│ │ │
|
|
│ │ E direct(C)
|
|
│ │ │
|
|
D │ │ direct(A)
|
|
│ │ │
|
|
│ │ C direct(A)
|
|
├───╯
|
|
│ B missing(X)
|
|
│ │
|
|
│ ~
|
|
│
|
|
A
|
|
|
|
"###);
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
J direct(F)
|
|
│
|
|
F direct(D)
|
|
│
|
|
D direct(A)
|
|
│
|
|
│ I direct(G)
|
|
│ │
|
|
│ G direct(E), direct(B)
|
|
│ ├─╮
|
|
│ │ B missing(X)
|
|
│ │ │
|
|
│ │ ~
|
|
│ │
|
|
│ │ H direct(E)
|
|
│ ├─╯
|
|
│ E direct(C)
|
|
│ │
|
|
│ C direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
}
|
|
|
|
#[test]
|
|
fn test_topo_grouped_parallel_interleaved() {
|
|
let graph = vec![
|
|
(id('E'), vec![direct('C')]),
|
|
(id('D'), vec![direct('B')]),
|
|
(id('C'), vec![direct('A')]),
|
|
(id('B'), vec![missing('X')]),
|
|
(id('A'), vec![]),
|
|
];
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
E direct(C)
|
|
│
|
|
│ D direct(B)
|
|
│ │
|
|
C │ direct(A)
|
|
│ │
|
|
│ B missing(X)
|
|
│ │
|
|
│ ~
|
|
│
|
|
A
|
|
|
|
"###);
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
E direct(C)
|
|
│
|
|
C direct(A)
|
|
│
|
|
A
|
|
|
|
D direct(B)
|
|
│
|
|
B missing(X)
|
|
│
|
|
~
|
|
"###);
|
|
}
|
|
|
|
#[test]
|
|
fn test_topo_grouped_multiple_child_dependencies() {
|
|
let graph = vec![
|
|
(id('I'), vec![direct('H'), direct('G')]),
|
|
(id('H'), vec![direct('D')]),
|
|
(id('G'), vec![direct('B')]),
|
|
(id('F'), vec![direct('E'), direct('C')]),
|
|
(id('E'), vec![direct('D')]),
|
|
(id('D'), vec![direct('B')]),
|
|
(id('C'), vec![direct('B')]),
|
|
(id('B'), vec![direct('A')]),
|
|
(id('A'), vec![]),
|
|
];
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
I direct(H), direct(G)
|
|
├─╮
|
|
H │ direct(D)
|
|
│ │
|
|
│ G direct(B)
|
|
│ │
|
|
│ │ F direct(E), direct(C)
|
|
│ │ ├─╮
|
|
│ │ E │ direct(D)
|
|
├───╯ │
|
|
D │ │ direct(B)
|
|
├─╯ │
|
|
│ C direct(B)
|
|
├─────╯
|
|
B direct(A)
|
|
│
|
|
A
|
|
|
|
"###);
|
|
// Topological order must be preserved. Depending on the implementation,
|
|
// E might be requested more than once by paths D->E and B->D->E.
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
I direct(H), direct(G)
|
|
├─╮
|
|
│ G direct(B)
|
|
│ │
|
|
H │ direct(D)
|
|
│ │
|
|
│ │ F direct(E), direct(C)
|
|
│ │ ├─╮
|
|
│ │ │ C direct(B)
|
|
│ ├───╯
|
|
│ │ E direct(D)
|
|
├───╯
|
|
D │ direct(B)
|
|
├─╯
|
|
B direct(A)
|
|
│
|
|
A
|
|
|
|
"###);
|
|
}
|
|
|
|
#[test]
|
|
fn test_topo_grouped_requeue_unpopulated() {
|
|
let graph = vec![
|
|
(id('C'), vec![direct('A'), direct('B')]),
|
|
(id('B'), vec![direct('A')]),
|
|
(id('A'), vec![]),
|
|
];
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
C direct(A), direct(B)
|
|
├─╮
|
|
│ B direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
C direct(A), direct(B)
|
|
├─╮
|
|
│ B direct(A)
|
|
├─╯
|
|
A
|
|
|
|
"###);
|
|
|
|
// A is queued once by C-A because B isn't populated at this point. Since
|
|
// B is the second parent, B-A is processed next and A is queued again. So
|
|
// one of them in the queue has to be ignored.
|
|
let mut iter = topo_grouped(graph.iter().cloned());
|
|
assert_eq!(iter.next().unwrap().0, id('C'));
|
|
assert_eq!(iter.emittable_ids, vec![id('A'), id('B')]);
|
|
assert_eq!(iter.next().unwrap().0, id('B'));
|
|
assert_eq!(iter.emittable_ids, vec![id('A'), id('A')]);
|
|
assert_eq!(iter.next().unwrap().0, id('A'));
|
|
assert!(iter.next().is_none());
|
|
assert!(iter.emittable_ids.is_empty());
|
|
}
|
|
|
|
#[test]
|
|
fn test_topo_grouped_duplicated_edges() {
|
|
// The graph shouldn't have duplicated parent->child edges, but topo-grouped
|
|
// iterator can handle it anyway.
|
|
let graph = vec![(id('B'), vec![direct('A'), direct('A')]), (id('A'), vec![])];
|
|
insta::assert_snapshot!(format_graph(graph.iter().cloned()), @r###"
|
|
B direct(A), direct(A)
|
|
│
|
|
A
|
|
|
|
"###);
|
|
insta::assert_snapshot!(format_graph(topo_grouped(graph.iter().cloned())), @r###"
|
|
B direct(A), direct(A)
|
|
│
|
|
A
|
|
|
|
"###);
|
|
|
|
let mut iter = topo_grouped(graph.iter().cloned());
|
|
assert_eq!(iter.next().unwrap().0, id('B'));
|
|
assert_eq!(iter.emittable_ids, vec![id('A'), id('A')]);
|
|
assert_eq!(iter.next().unwrap().0, id('A'));
|
|
assert!(iter.next().is_none());
|
|
assert!(iter.emittable_ids.is_empty());
|
|
}
|
|
}
|