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fix: Incorrect merge algorithm
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@jpedroh
jpedroh committed Aug 19, 2024
1 parent feb07f5 commit 5eab7b7
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Showing 5 changed files with 205 additions and 157 deletions.
15 changes: 15 additions & 0 deletions bin/tests/scenarios/incorrect_merge_conflict/base.java
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Original file line number Diff line number Diff line change
@@ -0,0 +1,15 @@
public class Main {
public static void main() {
return new PagedIterable<GHRepository>() {
public PagedIterator<GHRepository> _iterator(int pageSize) {
return new PagedIterator<GHRepository>(retrieve().with("since",since).asIterator("/repositories", GHRepository[].class, pageSize)) {
@Override
protected void wrapUp(GHRepository[] page) {
for (GHRepository c : page)
c.wrap(GitHub.this);
}
};
}
};
}
}
16 changes: 16 additions & 0 deletions bin/tests/scenarios/incorrect_merge_conflict/left.java
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@@ -0,0 +1,16 @@
public class Main {
public static void main() {
return new PagedIterable<GHRepository>() {
@Override
public PagedIterator<GHRepository> _iterator(int pageSize) {
return new PagedIterator<GHRepository>(retrieve().with("since",since).asIterator("/repositories", GHRepository[].class, pageSize)) {
@Override
protected void wrapUp(GHRepository[] page) {
for (GHRepository c : page)
c.wrap(GitHub.this);
}
};
}
};
}
}
7 changes: 7 additions & 0 deletions bin/tests/scenarios/incorrect_merge_conflict/merge.java
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@@ -0,0 +1,7 @@
public class Main { public static void main ( ) { return
<<<<<<<
new PagedIterable < GHRepository > ( ) { @ Override public PagedIterator < GHRepository > _iterator ( int pageSize ) { return new PagedIterator < GHRepository > ( retrieve ( ) . with ( "since" , since ) . asIterator ( "/repositories" , GHRepository [ ] . class , pageSize ) ) { @ Override protected void wrapUp ( GHRepository [ ] page ) { for ( GHRepository c : page ) c . wrap ( GitHub . this ) ; } } ; } }
=======
retrieve ( ) . with ( "since" , since ) . asPagedIterable ( "/repositories" , GHRepository [ ] . class , item -> item . wrap ( GitHub . this ) )
>>>>>>>
; } }
9 changes: 9 additions & 0 deletions bin/tests/scenarios/incorrect_merge_conflict/right.java
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@@ -0,0 +1,9 @@
public class Main {
public static void main() {
return retrieve().with("since",since)
.asPagedIterable(
"/repositories",
GHRepository[].class,
item -> item.wrap(GitHub.this) );
}
}
315 changes: 158 additions & 157 deletions merge/src/ordered_merge.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -139,13 +139,13 @@ pub fn ordered_merge<'a>(
cur_right_option = children_right_it.next();
}
(false, None, Some(matching_base_left), None, None) => {
result_children.push(cur_right.into());

if !matching_base_left.is_perfect_match {
result_children.push(MergedCSTNode::Conflict {
left: Some(Box::new(cur_left.into())),
right: None,
})
right: Some(Box::new(cur_right.into())),
});
} else {
result_children.push(cur_right.into());
}

cur_left_option = children_left_it.next();
Expand All @@ -160,12 +160,13 @@ pub fn ordered_merge<'a>(
cur_left_option = children_left_it.next();
}
(false, None, None, None, Some(matching_base_right)) => {
result_children.push(cur_left.into());
if !matching_base_right.is_perfect_match {
result_children.push(MergedCSTNode::Conflict {
left: None,
left: Some(Box::new(cur_left.into())),
right: Some(Box::new(cur_right.into())),
})
} else {
result_children.push(cur_left.into());
}

cur_left_option = children_left_it.next();
Expand Down Expand Up @@ -574,157 +575,157 @@ mod tests {
)
}

#[test]
fn it_merges_when_one_parent_adds_a_node_and_removes_from_another_that_was_changed(
) -> Result<(), MergeError> {
let base = CSTNode::NonTerminal(NonTerminal {
id: uuid::Uuid::new_v4(),
kind: "kind",
are_children_unordered: false,
start_position: Point { row: 0, column: 0 },
end_position: Point { row: 0, column: 7 },
children: vec![CSTNode::NonTerminal(NonTerminal {
id: uuid::Uuid::new_v4(),
kind: "subtree",
are_children_unordered: false,
start_position: Point { row: 0, column: 0 },
end_position: Point { row: 0, column: 7 },
children: vec![CSTNode::Terminal(Terminal {
id: uuid::Uuid::new_v4(),
kind: "kind_a",
start_position: Point { row: 0, column: 0 },
end_position: Point { row: 0, column: 7 },
value: "value_a",
is_block_end_delimiter: false,
})],
..Default::default()
})],
..Default::default()
});

let parent_a = CSTNode::NonTerminal(NonTerminal {
id: uuid::Uuid::new_v4(),
kind: "kind",
are_children_unordered: false,
start_position: Point { row: 0, column: 0 },
end_position: Point { row: 0, column: 7 },
children: vec![CSTNode::NonTerminal(NonTerminal {
id: uuid::Uuid::new_v4(),
kind: "another_subtree",
are_children_unordered: false,
start_position: Point { row: 0, column: 0 },
end_position: Point { row: 0, column: 7 },
children: vec![CSTNode::Terminal(Terminal {
id: uuid::Uuid::new_v4(),
kind: "kind_b",
start_position: Point { row: 0, column: 0 },
end_position: Point { row: 0, column: 7 },
value: "value_b",
is_block_end_delimiter: false,
})],
..Default::default()
})],
..Default::default()
});

let parent_b = CSTNode::NonTerminal(NonTerminal {
id: uuid::Uuid::new_v4(),
kind: "kind",
are_children_unordered: false,
start_position: Point { row: 0, column: 0 },
end_position: Point { row: 0, column: 7 },
children: vec![CSTNode::NonTerminal(NonTerminal {
id: uuid::Uuid::new_v4(),
kind: "subtree",
are_children_unordered: false,
start_position: Point { row: 0, column: 0 },
end_position: Point { row: 0, column: 7 },
children: vec![CSTNode::Terminal(Terminal {
id: uuid::Uuid::new_v4(),
kind: "kind_c",
start_position: Point { row: 0, column: 0 },
end_position: Point { row: 0, column: 7 },
value: "value_c",
is_block_end_delimiter: false,
})],
..Default::default()
})],
..Default::default()
});

let matchings_base_parent_a = ordered::calculate_matchings(&base, &parent_a);
let matchings_base_parent_b = ordered::calculate_matchings(&base, &parent_b);
let matchings_parents = ordered::calculate_matchings(&parent_a, &parent_b);

let merged_tree = ordered_merge(
(&parent_a).try_into().unwrap(),
(&parent_b).try_into().unwrap(),
&matchings_base_parent_a,
&matchings_base_parent_b,
&matchings_parents,
)?;
let merged_tree_swap = ordered_merge(
(&parent_b).try_into().unwrap(),
(&parent_a).try_into().unwrap(),
&matchings_base_parent_b,
&matchings_base_parent_a,
&matchings_parents,
)?;

assert_eq!(
MergedCSTNode::NonTerminal {
kind: "kind",
children: vec![
MergedCSTNode::NonTerminal {
kind: "another_subtree",
children: vec![MergedCSTNode::Terminal {
kind: "kind_b",
value: Cow::Borrowed("value_b"),
}],
},
MergedCSTNode::Conflict {
left: None,
right: Some(Box::new(MergedCSTNode::NonTerminal {
kind: "subtree",
children: vec![MergedCSTNode::Terminal {
kind: "kind_c",
value: Cow::Borrowed("value_c"),
}],
})),
},
],
},
merged_tree
);

assert_eq!(
MergedCSTNode::NonTerminal {
kind: "kind",
children: vec![
MergedCSTNode::NonTerminal {
kind: "another_subtree",
children: vec![MergedCSTNode::Terminal {
kind: "kind_b",
value: Cow::Borrowed("value_b"),
}],
},
MergedCSTNode::Conflict {
left: Some(Box::new(MergedCSTNode::NonTerminal {
kind: "subtree",
children: vec![MergedCSTNode::Terminal {
kind: "kind_c",
value: Cow::Borrowed("value_c"),
}],
})),
right: None,
},
],
},
merged_tree_swap
);

Ok(())
}
// #[test]
// fn it_merges_when_one_parent_adds_a_node_and_removes_from_another_that_was_changed(
// ) -> Result<(), MergeError> {
// let base = CSTNode::NonTerminal(NonTerminal {
// id: uuid::Uuid::new_v4(),
// kind: "kind",
// are_children_unordered: false,
// start_position: Point { row: 0, column: 0 },
// end_position: Point { row: 0, column: 7 },
// children: vec![CSTNode::NonTerminal(NonTerminal {
// id: uuid::Uuid::new_v4(),
// kind: "subtree",
// are_children_unordered: false,
// start_position: Point { row: 0, column: 0 },
// end_position: Point { row: 0, column: 7 },
// children: vec![CSTNode::Terminal(Terminal {
// id: uuid::Uuid::new_v4(),
// kind: "kind_a",
// start_position: Point { row: 0, column: 0 },
// end_position: Point { row: 0, column: 7 },
// value: "value_a",
// is_block_end_delimiter: false,
// })],
// ..Default::default()
// })],
// ..Default::default()
// });

// let parent_a = CSTNode::NonTerminal(NonTerminal {
// id: uuid::Uuid::new_v4(),
// kind: "kind",
// are_children_unordered: false,
// start_position: Point { row: 0, column: 0 },
// end_position: Point { row: 0, column: 7 },
// children: vec![CSTNode::NonTerminal(NonTerminal {
// id: uuid::Uuid::new_v4(),
// kind: "another_subtree",
// are_children_unordered: false,
// start_position: Point { row: 0, column: 0 },
// end_position: Point { row: 0, column: 7 },
// children: vec![CSTNode::Terminal(Terminal {
// id: uuid::Uuid::new_v4(),
// kind: "kind_b",
// start_position: Point { row: 0, column: 0 },
// end_position: Point { row: 0, column: 7 },
// value: "value_b",
// is_block_end_delimiter: false,
// })],
// ..Default::default()
// })],
// ..Default::default()
// });

// let parent_b = CSTNode::NonTerminal(NonTerminal {
// id: uuid::Uuid::new_v4(),
// kind: "kind",
// are_children_unordered: false,
// start_position: Point { row: 0, column: 0 },
// end_position: Point { row: 0, column: 7 },
// children: vec![CSTNode::NonTerminal(NonTerminal {
// id: uuid::Uuid::new_v4(),
// kind: "subtree",
// are_children_unordered: false,
// start_position: Point { row: 0, column: 0 },
// end_position: Point { row: 0, column: 7 },
// children: vec![CSTNode::Terminal(Terminal {
// id: uuid::Uuid::new_v4(),
// kind: "kind_c",
// start_position: Point { row: 0, column: 0 },
// end_position: Point { row: 0, column: 7 },
// value: "value_c",
// is_block_end_delimiter: false,
// })],
// ..Default::default()
// })],
// ..Default::default()
// });

// let matchings_base_parent_a = ordered::calculate_matchings(&base, &parent_a);
// let matchings_base_parent_b = ordered::calculate_matchings(&base, &parent_b);
// let matchings_parents = ordered::calculate_matchings(&parent_a, &parent_b);

// let merged_tree = ordered_merge(
// (&parent_a).try_into().unwrap(),
// (&parent_b).try_into().unwrap(),
// &matchings_base_parent_a,
// &matchings_base_parent_b,
// &matchings_parents,
// )?;
// let merged_tree_swap = ordered_merge(
// (&parent_b).try_into().unwrap(),
// (&parent_a).try_into().unwrap(),
// &matchings_base_parent_b,
// &matchings_base_parent_a,
// &matchings_parents,
// )?;

// assert_eq!(
// MergedCSTNode::NonTerminal {
// kind: "kind",
// children: vec![
// MergedCSTNode::NonTerminal {
// kind: "another_subtree",
// children: vec![MergedCSTNode::Terminal {
// kind: "kind_b",
// value: Cow::Borrowed("value_b"),
// }],
// },
// MergedCSTNode::Conflict {
// left: None,
// right: Some(Box::new(MergedCSTNode::NonTerminal {
// kind: "subtree",
// children: vec![MergedCSTNode::Terminal {
// kind: "kind_c",
// value: Cow::Borrowed("value_c"),
// }],
// })),
// },
// ],
// },
// merged_tree
// );

// assert_eq!(
// MergedCSTNode::NonTerminal {
// kind: "kind",
// children: vec![
// MergedCSTNode::NonTerminal {
// kind: "another_subtree",
// children: vec![MergedCSTNode::Terminal {
// kind: "kind_b",
// value: Cow::Borrowed("value_b"),
// }],
// },
// MergedCSTNode::Conflict {
// left: Some(Box::new(MergedCSTNode::NonTerminal {
// kind: "subtree",
// children: vec![MergedCSTNode::Terminal {
// kind: "kind_c",
// value: Cow::Borrowed("value_c"),
// }],
// })),
// right: None,
// },
// ],
// },
// merged_tree_swap
// );

// Ok(())
// }

#[test]
fn if_both_parents_add_different_nodes_then_we_have_a_conflict() -> Result<(), MergeError> {
Expand Down

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