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nyash-codex c6c5653ae0 fix(parser): Stage-1 CLI infinite loop - MirBuilder-friendly refactoring (Part 1/3) 
**Problem**: Stage-1 CLI hits VM step budget (infinite loops) in multiple functions
- ParserBox.parse_program2: bb2853→bb2854 loop
- StringHelpers.skip_ws: bb488→bb491 loop

**Root Cause**: MirBuilder bug with `loop(cont==1)` + nested `if-else` pattern
- PHI instructions with self-references
- Loop exit blocks jumping back to header instead of continuation

**Solution**: Refactor to MirBuilder-friendly pattern
```hako
// Before (causes infinite loop):
loop(cont == 1) {
  if guard > max { return j } else { guard++ }
  if condition { action } else { cont = 0 }
}

// After (MirBuilder-friendly):
loop(j < n) {
  if condition { j++; continue }
  break
}
```

**Changes**:
1. parser_box.hako: parse_program2 main loop refactored
   - 7 sections: ws→EOF/guard→parse_stmt2→progress guard→trace→semicolons→emit
   - Unconditional parse_stmt2 execution (no nested if-else)
   - Explicit `break` for loop exits

2. string_helpers.hako: StringHelpers.skip_ws simplified
   - Removed `cont` flag and guard counter
   - Direct `loop(j < n)` with `continue/break`

3. vm.rs, vm_fallback.rs: RUST_MIR_DUMP_PATH support
   - Enables offline MIR analysis for debugging

**Progress**:
- ✅ parse_program2: infinite loop fixed
- ✅ StringHelpers.skip_ws: infinite loop fixed
- ⏳ ParserIdentScanBox.scan_ident: next target (bb985 loop)

**Testing**:
- MIR dumps generated successfully (116K+ lines)
- ws_init loop completes
- parse_program2 progresses further
- Still hits infinite loop in scan_ident (Part 2 needed)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-11-24 18:19:31 +09:00
..
build
restore(lang): full lang tree from ff3ef452 (306 files) — compiler, vm, shared, runner, c-abi, etc.\n\n- Restores lang/ directory (files≈306, dirs≈64) as per historical branch with selfhost sources\n- Keeps our recent parser index changes in compiler/* (merged clean by checkout)\n- Unblocks selfhost development and documentation references
2025-10-31 20:45:46 +09:00
c-abi
Phase 21.2 Complete: VM Adapter正規実装 + devブリッジ完全撤去
2025-11-07 19:32:44 +09:00
src
fix(parser): Stage-1 CLI infinite loop - MirBuilder-friendly refactoring (Part 1/3)
2025-11-24 18:19:31 +09:00
.gitignore
restore(lang): full lang tree from ff3ef452 (306 files) — compiler, vm, shared, runner, c-abi, etc.\n\n- Restores lang/ directory (files≈306, dirs≈64) as per historical branch with selfhost sources\n- Keeps our recent parser index changes in compiler/* (merged clean by checkout)\n- Unblocks selfhost development and documentation references
2025-10-31 20:45:46 +09:00
README.md
Phase 25.1a: selfhost builder hotfix (fn rename, docs)
2025-11-15 05:42:32 +09:00

README.md

Hakorune Lang Line — Rust-less Kernel (C ABI)

Scope

  • This lang/ tree hosts the script-driven C ABI kernel artifacts for Phase 20.9+.
  • Goal: keep the runtime data plane callable without Rust on the hot path (Hakorune → LLVM → C ABI).

Principles

  • Separation: do not mix Rust crates or cargo-specific layout under this tree.
  • Ownership & ABI:
    • Any char* returned across the ABI is owned by the callee and must be freed via hako_mem_free().
    • Do not mix CRT free() across boundaries.
  • Fail‑Fast: no silent fallbacks. Missing symbols must be observable via short diagnostics.

Layout (initial)

  • c-abi/ — C shim(s) and headers for the minimal kernel surface
    • README.md — responsibilities, build notes, platform caveats
    • include/ — public headers (mirrored or thin wrappers)
    • shims/ — libc-backed shim(s) for canaries and local testing

Build & Link (dev)

  • C shim: build a shared library to satisfy symbols for the LLVM line canaries.
  • Link flags example:
    • Linux: -L$(pwd)/target/release -Wl,-rpath,$(pwd)/target/release -lhako_kernel_shim

Non‑Goals

  • Plugin loader, HostBridge router, Box/Type system — kept in Rust.

Selfhost Launcher (AOT)

Dev line (Stage1 core – experimental)

  • Dev build: tools/selfhost/build_stage1.sh → produces target/selfhost/hakorune
  • Role:
    • Fast iteration用の Stage1 selfhost バイナリ（Ny Executor / CLI 実験など）。
    • new CLI/runner 機能はまずこちらで開発・検証する。

Stable line (lang bin – snapshot)

  • Stable binary: lang/bin/hakorune
  • Build (pure-lang launcher, legacy bring-up):
    • lang/build/build_runner.sh → produces lang/bin/hakorune
    • Requirements: LLVM 18 dev (llvm-config-18)
  • Policy（Phase 25.1 以降の想定）:
    • target/selfhost/hakorune で十分に安定したら、その成果物を lang/bin/hakorune に昇格させる（手動コピー or 専用スクリプト）。
    • lang/bin/hakorune は「last known good」の Stage1 コア EXE として扱い、配布や外部からの参照時は原則こちらを基準にする。

Notes

  • lang/ 以下は「最終的に 1 つの Stage1 コア EXE（hakorune）を構成するソース群」という前提で整理する。
  • target/selfhost/hakorune は開発中の最新版、lang/bin/hakorune は安定版スナップショットという役割分担にする。