pub struct InputEditCalculator;Expand description
Calculates InputEdit describing changes between two file versions.
The calculator finds the common prefix and suffix between old and new content, then computes the byte offsets and line/column positions for the changed region.
§Algorithm
- Find longest common prefix → start of edit
- Find longest common suffix → end of edit
- Convert byte offsets to (line, column) via
byte_to_point() - Build
InputEditwith old/new positions
§Example
ⓘ
let old = b"fn foo() {}\n";
let new = b"fn foo() { return 42; }\n";
let edit = InputEditCalculator::calculate(old, new);
// edit describes: inserted " return 42;" at position (0, 10)Implementations§
Source§impl InputEditCalculator
impl InputEditCalculator
Sourcepub fn calculate(old_content: &[u8], new_content: &[u8]) -> InputEdit
pub fn calculate(old_content: &[u8], new_content: &[u8]) -> InputEdit
Calculate the InputEdit between old and new file content.
Returns an InputEdit that can be passed to tree.edit() to inform
tree-sitter about the changes, enabling incremental re-parsing.
§Edge Cases
- Empty old → full insert
- Empty new → full delete
- Identical content → zero-width edit at start
Auto Trait Implementations§
impl Freeze for InputEditCalculator
impl RefUnwindSafe for InputEditCalculator
impl Send for InputEditCalculator
impl Sync for InputEditCalculator
impl Unpin for InputEditCalculator
impl UnsafeUnpin for InputEditCalculator
impl UnwindSafe for InputEditCalculator
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