Crate oxicode_hashline 

oxicode-hashline — line-anchored patch format for AI-assisted code editing.

Pure-function library: no filesystem, no agent runtime, no schema library. The host (oxicode-agent) injects a patcher::HashlineFs implementation.

Ported from omp’s packages/hashline/ (TypeScript). Same algorithms, same test contracts, Rust idioms.

Re-exports

pub use apply::apply_edits;

pub use format::compute_file_hash;

pub use normalize::normalize_to_lf;

pub use normalize::strip_bom;

pub use parser::Patch;

pub use parser::PatchSection;

pub use parser::split_patch_input;

pub use patcher::HashlineFs;

pub use patcher::Patcher;

pub use snapshots::InMemorySnapshotStore;

pub use snapshots::Snapshot;

pub use snapshots::SnapshotStore;

pub use types::Anchor;

pub use types::Cursor;

pub use types::Edit;

Modules

apply

Apply a parsed list of Edits to a text body and return the post-edit text plus diagnostic warnings.

diff_preview

Re-number a line-level diff between two file versions into a compact current-file preview.

format

Hashline format primitives: sigils, separators, and display helpers. Single source of truth for the parser, tokenizer, prompt, and grammar.

grammar

Grammar tokens and keywords. Mirrors omp’s grammar.lark but as Rust constants/enums — no parser generator needed (the parser is hand-written).

messages

Centralized error/warning text for the hashline parser, applier, and patcher.

mismatch

Error type raised when a section’s snapshot tag does not match the live file content and recovery is unavailable / has failed.

normalize

Minimal text-shape normalization: line-ending detection / round-trip and BOM stripping. The patcher uses these to canonicalize text to LF before applying edits and to restore the original shape on write-back.

parser

Token-driven state machine that turns a stream of Tokens into a flat list of Edits, plus the top-level envelope splitter that carves an authored patch into PatchSections.

patcher

Filesystem-backed patch orchestrator.

recovery

Snapshot-tag drift recovery.

snapshots

Per-session snapshot store used by recovery and the patcher to bind hashline section tags to the exact file content that minted them.

tokenizer

Stateful, line-oriented classifier for hashline diff text.

types

Pure data types shared across the hashline parser, applier, and patcher. No filesystem, agent runtime, or schema library references — keep it pure.