af11c6855b
Major milestone: - Set up apps/selfhost-compiler/ directory structure - Implement basic Nyash compiler in Nyash (CompilerBox) - Stage-1: Basic arithmetic parser (int/string/+/-/*/括弧/return) - JSON v0 output compatible with --ny-parser-pipe - Runner integration with NYASH_USE_NY_COMPILER=1 flag - Comprehensive smoke tests for PHI/Bridge/Stage-2 Technical updates: - Updated CLAUDE.md with Phase 15.3 status and MIR14 details - Statement separation policy: newline-based with minimal ASI - Fixed runaway ny-parser-pipe processes (CPU 94.9%) - Clarified MIR14 as canonical instruction set (not 13/18) - LoopForm strategy: PHI auto-generation during reverse lowering Collaborative development: - ChatGPT5 implementing compiler skeleton - Codex provided LoopForm PHI generation guidance - Claude maintaining documentation and coordination 🎉 セルフホスティングの歴史的一歩！自分自身をコンパイルする日が近いにゃ！ Co-Authored-By: ChatGPT <noreply@openai.com>
82 lines
3.3 KiB
Markdown
82 lines
3.3 KiB
Markdown
# Ny JSON IR v0 — Minimal Spec (Stage‑2)
|
||
|
||
Status: experimental but stable for Phase‑15 Stage‑2. Input to `--ny-parser-pipe`.
|
||
|
||
Version and root
|
||
- `version`: 0
|
||
- `kind`: "Program"
|
||
- `body`: array of statements
|
||
|
||
Statements (`StmtV0`)
|
||
- `Return { expr }`
|
||
- `Extern { iface, method, args[] }` (optional; passes through to `ExternCall`)
|
||
- `Expr { expr }` (expression statement; side effects only)
|
||
- `Local { name, expr }` (Stage‑2)
|
||
- `If { cond, then: Stmt[], else?: Stmt[] }` (Stage‑2)
|
||
- `Loop { cond, body: Stmt[] }` (Stage‑2; while(cond) body)
|
||
|
||
Expressions (`ExprV0`)
|
||
- `Int { value }` where `value` is JSON number or digit string
|
||
- `Str { value: string }`
|
||
- `Bool { value: bool }`
|
||
- `Binary { op: "+"|"-"|"*"|"/", lhs, rhs }`
|
||
- `Compare { op: "=="|"!="|"<"|"<="|">"|">=", lhs, rhs }`
|
||
- `Logical { op: "&&"|"||", lhs, rhs }` (short‑circuit)
|
||
- `Call { name: string, args[] }` (function by name)
|
||
- `Method { recv: Expr, method: string, args[] }` (box method)
|
||
- `New { class: string, args[] }` (construct Box)
|
||
- `Var { name: string }`
|
||
|
||
CFG conventions (lowered by the bridge)
|
||
- If: create `then_bb`, `else_bb`, `merge_bb`. Both branches jump to merge if unterminated.
|
||
- Loop: `preheader -> cond_bb -> (body_bb or exit_bb)`, body jumps back to cond.
|
||
- Short‑circuit Logical: create `rhs_bb`, `fall_bb`, `merge_bb` with constants on fall path.
|
||
- All blocks end with a terminator (branch/jump/return).
|
||
|
||
PHI merging (current behavior)
|
||
- If: locals updated in `then`/`else` merge at `merge_bb` via `phi`.
|
||
- Else欠落時は else 側に分岐前(base)を採用。
|
||
- 片側にしか存在しない新規変数はスコープ外として外へ未伝播。
|
||
- Loop: `cond_bb` にヘッダ PHI を先置き（preheader/base と latch/body end を合流）。
|
||
- 目的: Stage‑2 を早期に安定化させるための橋渡し。将来（Core‑14）は LoopForm からの逆LoweringでPHI自動化予定。
|
||
|
||
Type meta (emitter/LLVM harness cooperation)
|
||
- `+` with any string operand → string concat path（handle固定）。
|
||
- `==/!=` with both strings → string compare path。
|
||
|
||
Special notes
|
||
- `Var("me")`: Bridge 既定では未定義エラー。デバッグ用に `NYASH_BRIDGE_ME_DUMMY=1` でダミー `NewBox{class}` を注入可（`NYASH_BRIDGE_ME_CLASS` 省略時は `Main`）。
|
||
- `--ny-parser-pipe` は stdin の JSON v0 を受け取り、MIR→MIR‑Interp 経由で実行する。
|
||
|
||
CLI/Env cheatsheet
|
||
- Pipe: `echo '{...}' | target/release/nyash --ny-parser-pipe`
|
||
- File: `target/release/nyash --json-file sample.json`
|
||
- Verbose MIR dump: `NYASH_CLI_VERBOSE=1`
|
||
- me dummy: `NYASH_BRIDGE_ME_DUMMY=1 NYASH_BRIDGE_ME_CLASS=ConsoleBox`
|
||
|
||
Examples
|
||
|
||
Arithmetic
|
||
```json
|
||
{"version":0,"kind":"Program","body":[
|
||
{"type":"Return","expr":{
|
||
"type":"Binary","op":"+",
|
||
"lhs":{"type":"Int","value":1},
|
||
"rhs":{"type":"Binary","op":"*","lhs":{"type":"Int","value":2},"rhs":{"type":"Int","value":3}}
|
||
}}
|
||
]}
|
||
```
|
||
|
||
If with local + PHI merge
|
||
```json
|
||
{"version":0,"kind":"Program","body":[
|
||
{"type":"Local","name":"x","expr":{"type":"Int","value":1}},
|
||
{"type":"If","cond":{"type":"Compare","op":"<","lhs":{"type":"Int","value":1},"rhs":{"type":"Int","value":2}},
|
||
"then":[{"type":"Local","name":"x","expr":{"type":"Int","value":10}}],
|
||
"else":[{"type":"Local","name":"x","expr":{"type":"Int","value":20}}]
|
||
},
|
||
{"type":"Return","expr":{"type":"Var","name":"x"}}
|
||
]}
|
||
```
|
||
|