Module incremental_checkpoint 

Checkpoint-based incremental parsing with rollback support. Incremental parsing implementation and helpers. Incremental parser with lexer checkpointing

This module provides a fully incremental parser that uses lexer checkpoints to efficiently re-lex only the changed portions of the input.

Pipeline integration

Token caching and Parser::from_tokens are now wired together:

1. parse_with_checkpoints collects parser tokens (trivia-filtered, kind-converted) and caches them alongside the lexer checkpoints.
2. reparse_from_checkpoint assembles a mixed token list from cached tokens (before the edit) + freshly-lexed tokens (affected region) + cached or freshly-lexed tokens (after the edit), then calls Parser::from_tokens to skip re-lexing the unchanged portions.

Structs

CheckpointedIncrementalParser

Incremental parser with lexer checkpointing

IncrementalStats

Statistics for incremental parsing

SimpleEdit

Simple edit structure for demos