mirrors/helix
1
0
Fork 0
mirror of https://github.com/helix-editor/helix.git synced 2025-04-06 12:27:42 +03:00
Code Issues Projects Releases Packages Wiki Activity

transaction: Use builder methods to generate compact changesets.

Browse source
This commit is contained in:
Blaž Hrastnik 2021-02-16 11:03:36 +09:00
parent 19fb4ed835
commit b4312c9492
2 changed files with 106 additions and 69 deletions
Download patch file Download diff file Expand all files Collapse all files

58
helix-core/src/syntax.rs
View file

@ -451,7 +451,7 @@ impl LanguageLayer {
Delete(i) | Retain(i) => *i,
Insert(_) => 0,
};
let old_end = old_pos + len;
let mut old_end = old_pos + len;
match change {
Retain(_) => {
@ -467,10 +467,27 @@ impl LanguageLayer {
// let line_start_byte = line_to_byte()
// Position::new(line, line_start_byte - byte)
// a subsequent ins means a replace, consume it
if let Some(Insert(s)) = iter.peek() {
// deletion
edits.push(tree_sitter::InputEdit {
start_byte, // old_pos to byte
old_end_byte, // old_end to byte
new_end_byte: start_byte, // old_pos to byte
start_position, // old pos to coords
old_end_position, // old_end to coords
new_end_position: start_position, // old pos to coords
});
}
Insert(s) => {
let (start_byte, start_position) = point_at_pos(&old_text, old_pos);
let ins = s.chars().count();
// a subsequent delete means a replace, consume it
if let Some(Delete(len)) = iter.peek() {
old_end = old_pos + len;
let (old_end_byte, old_end_position) = point_at_pos(&old_text, old_end);
iter.next();
let ins = s.chars().count();
// replacement
edits.push(tree_sitter::InputEdit {
@ -481,34 +498,17 @@ impl LanguageLayer {
old_end_position, // old_end to coords
new_end_position: traverse(start_position, s), // old pos + chars, newlines matter too (iter over)
});
new_pos += ins;
} else {
// deletion
// insert
edits.push(tree_sitter::InputEdit {
start_byte, // old_pos to byte
old_end_byte, // old_end to byte
new_end_byte: start_byte, // old_pos to byte
start_position, // old pos to coords
old_end_position, // old_end to coords
new_end_position: start_position, // old pos to coords
start_byte, // old_pos to byte
old_end_byte: start_byte, // same
new_end_byte: start_byte + s.len(), // old_pos + s.len()
start_position, // old pos to coords
old_end_position: start_position, // same
new_end_position: traverse(start_position, s), // old pos + chars, newlines matter too (iter over)
});
};
}
Insert(s) => {
let (start_byte, start_position) = point_at_pos(&old_text, old_pos);
let ins = s.chars().count();
// insert
edits.push(tree_sitter::InputEdit {
start_byte, // old_pos to byte
old_end_byte: start_byte, // same
new_end_byte: start_byte + s.len(), // old_pos + s.len()
start_position, // old pos to coords
old_end_position: start_position, // same
new_end_position: traverse(start_position, s), // old pos + chars, newlines matter too (iter over)
});
}
new_pos += ins;
}