Crate fission_text_engine 

fission-text-engine

Production-quality text buffer for a code editor.

This crate provides the text storage and manipulation layer — it is deliberately not an editor. It owns:

• A rope-backed TextBuffer with O(log n) edits,
• A LineIndex that maps between byte offsets, (line, col) pairs, and UTF-16 code-unit columns (the encoding used by the Language Server Protocol),
• An EditHistory with bounded undo / redo stacks built on EditTransactions,
• A CoordinateMapper that translates freely between the three coordinate systems (byte offset, line/col, LSP position).

Re-exports

pub use buffer::TextBuffer;

pub use coordinate::CoordinateMapper;

pub use coordinate::LspPosition;

pub use edit::EditHistory;

pub use edit::EditTransaction;

pub use edit::TextEdit;

pub use line_index::LineCol;

pub use line_index::LineIndex;

Modules

buffer

Rope-backed text buffer with revision tracking.

coordinate

Coordinate mapper: byte offset <-> line/col <-> LSP position (UTF-16).

edit

Edit primitives, transactions, and undo/redo history.

line_index

Efficient mapping between byte offsets and line/column positions.