hakorune/tools/hako-check/README.md

Hakorune Script Checker (MVP)

Purpose

• Quickly validate Hakorune source files by parsing → MIR build → MIR verify without executing.
• Useful while Python/llvmlite migration is in-flight to keep scripts healthy.

Usage

• Build once (auto-build if missing):
  • cargo build --release
• Run checker:
  • tools/hako-check/hako-check.sh path/to/file.hako
  • or set alias explicitly: HAKO_BIN=tools/bin/hako tools/hako-check/hako-check.sh file.hako

Behavior

• Runs: nyash --backend mir --verify
• Exit codes:
  • 0: OK
  • 2+: Parse/MIR verify failure (nyash returns non‑zero; checker forwards)

Notes

• Binary alias
  • Preferred alias: tools/bin/hako (or tools/bin/hakorune)
  • Backward‑compat: target/release/nyash も利用可（自動検出）
• This MVP only checks a single file and depends on the Rust parser.
• Extend with flags (parser selection, JSON emit) as migration progresses.