553 lines
17 KiB
Markdown
553 lines
17 KiB
Markdown
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# PythonParserBox ビルトインBox実装フロー(エキスパート統合版)
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~CPythonパーサー統合とPhase 1実装の具体的な流れ~
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更新日: 2025-08-27
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## 🎯 全体の実装フロー
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### Step 0: Python 3.11固定(エキスパート推奨)
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```
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- Python 3.11.9を使用(AST安定性確保)
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- pyenvまたはpython3.11コマンドで固定
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- py_versionとast_formatをJSON IRに必ず含める
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```
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### Step 1: ビルトインBoxとしての基盤作成
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```
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1. src/boxes/python_parser_box/mod.rs を作成
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2. BoxBase + BoxCore統一アーキテクチャに準拠
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3. PythonParserBoxの基本構造を定義
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4. src/boxes/mod.rs に登録
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5. テレメトリー基盤を初期から組み込む
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```
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### Step 2: pyo3統合とCPythonパーサー接続
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```
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1. Cargo.tomlに pyo3依存関係追加
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2. pyo3::prepare_freethreaded_python()で一度だけ初期化
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3. ast.parse()へのFFIブリッジ実装
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4. JSON中間表現への変換(Python側でJSON生成)
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5. GILは最小限に、py.allow_threads()でRust処理
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```
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### Step 3: Phase 1機能の実装(必須意味論要素)
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```
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必須要素(Codex先生強調):
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- LEGBスコーピング + locals/freevars
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- デフォルト引数の定義時評価
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- イテレータプロトコル(for文)
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- for/else + while/else
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- Python真偽値判定
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- 短絡評価(and/or)
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実装手順:
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1. 関数単位フォールバック戦略の実装
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2. 基本的なAST変換(def, if, for, while, return)
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3. 式の変換(算術/比較/論理演算子、関数呼び出し)
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4. Nyash ASTへの意味論を保ったマッピング
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5. Differential Testingフレームワーク
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```
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## 📝 具体的な実装コード
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### 1. ビルトインBox定義(src/boxes/python_parser_box/mod.rs)
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```rust
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use crate::core::{BoxBase, BoxCore, NyashBox};
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use crate::ast;
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use pyo3::prelude::*;
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use std::sync::{Arc, Mutex};
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pub struct PythonParserBox {
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base: BoxBase,
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py_helper: Arc<Mutex<PyHelper>>, // Python実行環境
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}
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impl BoxCore for PythonParserBox {
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fn box_id(&self) -> u64 {
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self.base.box_id()
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}
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fn parent_type_id(&self) -> Option<std::any::TypeId> {
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self.base.parent_type_id()
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}
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fn fmt_box(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
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write!(f, "PythonParserBox#{}", self.box_id())
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}
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}
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impl NyashBox for PythonParserBox {
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fn type_name(&self) -> &'static str {
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"PythonParserBox"
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}
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fn clone_box(&self) -> Box<dyn NyashBox> {
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Box::new(PythonParserBox {
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base: BoxBase::new(),
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py_helper: self.py_helper.clone(),
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})
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}
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fn as_any(&self) -> &dyn std::any::Any {
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self
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}
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fn as_any_mut(&mut self) -> &mut dyn std::any::Any {
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self
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}
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}
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```
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### 2. メソッド実装(Phase 1対応)
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```rust
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// テレメトリー用構造体
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#[derive(Default)]
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pub struct CompilationTelemetry {
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compiled_functions: Vec<String>,
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fallback_functions: Vec<(String, String, usize)>, // (name, reason, lineno)
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unsupported_nodes: HashMap<String, usize>, // node_type -> count
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}
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impl PythonParserBox {
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// コンストラクタ
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pub fn new() -> Result<Self, String> {
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// 一度だけ初期化
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static INIT: std::sync::Once = std::sync::Once::new();
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INIT.call_once(|| {
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pyo3::prepare_freethreaded_python();
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});
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// Python環境の初期化
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Python::with_gil(|py| {
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// Python 3.11確認
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let version = py.version_info();
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if version.major != 3 || version.minor != 11 {
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return Err(format!("Python 3.11 required, got {}.{}",
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version.major, version.minor));
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}
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let helper = PyHelper::new(py)?;
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Ok(PythonParserBox {
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base: BoxBase::new(),
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py_helper: Arc::new(Mutex::new(helper)),
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})
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})
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}
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// Python code → JSON AST
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pub fn parse_to_json(&self, code: &str) -> Result<String, String> {
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let helper = self.py_helper.lock().unwrap();
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Python::with_gil(|py| {
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helper.parse_to_json(py, code)
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})
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}
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// JSON AST → Nyash AST(Phase 1機能のみ)
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pub fn json_to_nyash_ast(&self, json: &str) -> Result<ast::Program, String> {
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let py_ast: Phase1PythonAst = serde_json::from_str(json)
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.map_err(|e| format!("JSON parse error: {}", e))?;
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let converter = Phase1Converter::new();
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converter.convert(py_ast)
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}
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// 直接実行(関数単位フォールバック)
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pub fn run(&self, code: &str) -> Result<Box<dyn NyashBox>, String> {
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// まずJSON ASTを取得
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let json_ast = self.parse_to_json(code)?;
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let py_ast: serde_json::Value = serde_json::from_str(&json_ast)?;
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// モジュール内の各関数をチェック
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let compiler = FunctionCompiler::new();
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let module_result = compiler.compile_module(&py_ast)?;
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// テレメトリー出力(環境変数で制御)
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if std::env::var("NYASH_PYTHONPARSER_TELEMETRY").is_ok() {
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compiler.print_telemetry();
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}
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// 実行(コンパイル済み関数はMIR、他はCPython)
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module_result.execute()
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}
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}
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```
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### 3. Python側ヘルパー実装
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```rust
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// Pythonコードを文字列として埋め込み
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const PYTHON_HELPER_CODE: &str = r#"
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import ast
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import json
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import sys
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# Python 3.11固定チェック
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assert sys.version_info[:2] == (3, 11), f"Python 3.11 required, got {sys.version}"
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def ast_to_dict(node):
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"""Phase 1: 基本的なAST要素のみ変換(エキスパート推奨JSON IR)"""
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result = {
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"node_type": node.__class__.__name__,
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"py_version": "3.11",
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"ast_format": "v1"
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}
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# 位置情報(エラー診断用)
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if hasattr(node, 'lineno'):
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result['lineno'] = node.lineno
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result['col_offset'] = node.col_offset
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if hasattr(node, 'end_lineno'):
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result['end_lineno'] = node.end_lineno
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result['end_col_offset'] = node.end_col_offset
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if isinstance(node, ast.Module):
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return {
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"type": "Module",
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"body": [ast_to_dict(stmt) for stmt in node.body]
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}
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elif isinstance(node, ast.FunctionDef):
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# 意味論上重要:デフォルト引数情報を保存
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args_info = {
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"args": [arg.arg for arg in node.args.args],
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"defaults": [ast_to_dict(default) for default in node.args.defaults],
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"kwonlyargs": [arg.arg for arg in node.args.kwonlyargs],
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"kw_defaults": [ast_to_dict(d) if d else None for d in node.args.kw_defaults]
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}
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result.update({
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"name": node.name,
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"args": args_info,
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"body": [ast_to_dict(stmt) for stmt in node.body],
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"decorator_list": [], # Phase 1では未対応
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"support_level": "full" # コンパイル可能
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})
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return result
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elif isinstance(node, ast.Return):
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return {
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"type": "Return",
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"value": ast_to_dict(node.value) if node.value else None
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}
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elif isinstance(node, ast.BinOp):
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return {
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"type": "BinOp",
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"op": node.op.__class__.__name__,
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"left": ast_to_dict(node.left),
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"right": ast_to_dict(node.right)
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}
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elif isinstance(node, ast.Call):
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return {
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"type": "Call",
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"func": ast_to_dict(node.func),
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"args": [ast_to_dict(arg) for arg in node.args]
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}
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elif isinstance(node, ast.Name):
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return {
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"type": "Name",
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"id": node.id
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}
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elif isinstance(node, ast.Constant):
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return {
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"type": "Constant",
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"value": node.value
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}
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elif isinstance(node, ast.If):
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return {
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"type": "If",
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"test": ast_to_dict(node.test),
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"body": [ast_to_dict(stmt) for stmt in node.body],
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"orelse": [ast_to_dict(stmt) for stmt in node.orelse]
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}
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elif isinstance(node, ast.For):
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# 意味論上重要:for/else構文
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result.update({
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"target": ast_to_dict(node.target),
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"iter": ast_to_dict(node.iter),
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"body": [ast_to_dict(stmt) for stmt in node.body],
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"orelse": [ast_to_dict(stmt) for stmt in node.orelse], # else節
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"support_level": "full"
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})
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return result
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elif isinstance(node, ast.While):
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# 意味論上重要:while/else構文
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result.update({
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"test": ast_to_dict(node.test),
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"body": [ast_to_dict(stmt) for stmt in node.body],
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"orelse": [ast_to_dict(stmt) for stmt in node.orelse], # else節
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"support_level": "full"
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})
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return result
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elif isinstance(node, ast.BoolOp):
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# 意味論上重要:短絡評価
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result.update({
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"op": node.op.__class__.__name__, # And, Or
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"values": [ast_to_dict(v) for v in node.values],
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"support_level": "full"
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})
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return result
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else:
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# Phase 1では未対応(テレメトリー用)
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return {
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"node_type": "Unsupported",
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"original_type": type(node).__name__,
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"support_level": "fallback",
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"lineno": getattr(node, 'lineno', -1)
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}
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def parse_to_json(code):
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try:
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tree = ast.parse(code)
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return json.dumps(ast_to_dict(tree))
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except Exception as e:
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return json.dumps({"type": "Error", "message": str(e)})
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"#;
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struct PyHelper {
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// Python側のヘルパー関数への参照を保持
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parse_func: PyObject,
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}
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impl PyHelper {
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fn new(py: Python) -> PyResult<Self> {
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// ヘルパーコードをPythonで実行
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let helpers = PyModule::from_code(py, PYTHON_HELPER_CODE, "helper.py", "helper")?;
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let parse_func = helpers.getattr("parse_to_json")?.to_object(py);
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Ok(PyHelper { parse_func })
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}
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fn parse_to_json(&self, py: Python, code: &str) -> Result<String, String> {
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match self.parse_func.call1(py, (code,)) {
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Ok(result) => result.extract::<String>(py)
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.map_err(|e| format!("Extract error: {}", e)),
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Err(e) => Err(format!("Parse error: {}", e))
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}
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}
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}
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```
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### 4. Phase 1 AST変換器
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```rust
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struct Phase1Converter;
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impl Phase1Converter {
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fn new() -> Self {
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Phase1Converter
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}
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fn convert(&self, py_ast: Phase1PythonAst) -> Result<ast::Program, String> {
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match py_ast {
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Phase1PythonAst::Module { body } => {
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let mut items = vec![];
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|
|
for stmt in body {
|
|||
|
|
match self.convert_statement(stmt)? {
|
|||
|
|
Some(item) => items.push(item),
|
|||
|
|
None => {} // 未対応要素はスキップ
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
Ok(ast::Program { items })
|
|||
|
|
}
|
|||
|
|
_ => Err("Expected Module at top level".into())
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
fn convert_statement(&self, stmt: Phase1PythonAst) -> Result<Option<ast::ProgramItem>, String> {
|
|||
|
|
match stmt {
|
|||
|
|
Phase1PythonAst::FunctionDef { name, args, body } => {
|
|||
|
|
// Python def → Nyash function
|
|||
|
|
let params = args.into_iter()
|
|||
|
|
.map(|arg| ast::Parameter { name: arg, ty: None })
|
|||
|
|
.collect();
|
|||
|
|
|
|||
|
|
let nyash_body = self.convert_body(body)?;
|
|||
|
|
|
|||
|
|
Ok(Some(ast::ProgramItem::Function(ast::FunctionDef {
|
|||
|
|
name,
|
|||
|
|
params,
|
|||
|
|
body: nyash_body,
|
|||
|
|
return_type: None,
|
|||
|
|
})))
|
|||
|
|
}
|
|||
|
|
Phase1PythonAst::Return { value } => {
|
|||
|
|
let expr = value
|
|||
|
|
.map(|v| self.convert_expression(v))
|
|||
|
|
.transpose()?;
|
|||
|
|
|
|||
|
|
Ok(Some(ast::ProgramItem::Statement(ast::Statement::Return(expr))))
|
|||
|
|
}
|
|||
|
|
// 他の文も同様に変換
|
|||
|
|
_ => Ok(None) // Phase 1では未対応
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
fn convert_expression(&self, expr: Phase1PythonAst) -> Result<ast::Expression, String> {
|
|||
|
|
match expr {
|
|||
|
|
Phase1PythonAst::BinOp { op, left, right } => {
|
|||
|
|
let left = Box::new(self.convert_expression(*left)?);
|
|||
|
|
let right = Box::new(self.convert_expression(*right)?);
|
|||
|
|
|
|||
|
|
let op = match op.as_str() {
|
|||
|
|
"Add" => ast::BinaryOp::Add,
|
|||
|
|
"Sub" => ast::BinaryOp::Sub,
|
|||
|
|
"Mul" => ast::BinaryOp::Mul,
|
|||
|
|
"Div" => ast::BinaryOp::Div,
|
|||
|
|
_ => return Err(format!("Unsupported operator: {}", op))
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
Ok(ast::Expression::BinaryOp { op, left, right })
|
|||
|
|
}
|
|||
|
|
Phase1PythonAst::Constant { value } => {
|
|||
|
|
// Python定数 → Nyashリテラル
|
|||
|
|
match value {
|
|||
|
|
serde_json::Value::Number(n) => {
|
|||
|
|
if let Some(i) = n.as_i64() {
|
|||
|
|
Ok(ast::Expression::Integer(i))
|
|||
|
|
} else if let Some(f) = n.as_f64() {
|
|||
|
|
Ok(ast::Expression::Float(f))
|
|||
|
|
} else {
|
|||
|
|
Err("Unsupported number type".into())
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
serde_json::Value::String(s) => {
|
|||
|
|
Ok(ast::Expression::String(s))
|
|||
|
|
}
|
|||
|
|
serde_json::Value::Bool(b) => {
|
|||
|
|
Ok(ast::Expression::Bool(b))
|
|||
|
|
}
|
|||
|
|
_ => Err("Unsupported constant type".into())
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
// 他の式も同様
|
|||
|
|
_ => Err("Unsupported expression in Phase 1".into())
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
### 5. インタープリター統合(src/interpreter/builtins.rs)
|
|||
|
|
```rust
|
|||
|
|
// ビルトインBox登録に追加
|
|||
|
|
pub fn register_builtin_boxes(env: &mut Environment) {
|
|||
|
|
// 既存のBox登録...
|
|||
|
|
|
|||
|
|
// PythonParserBox追加
|
|||
|
|
env.register_builtin_box("PythonParserBox", || {
|
|||
|
|
match PythonParserBox::new() {
|
|||
|
|
Ok(parser) => Arc::new(parser) as Arc<dyn NyashBox>,
|
|||
|
|
Err(e) => panic!("Failed to initialize PythonParserBox: {}", e)
|
|||
|
|
}
|
|||
|
|
});
|
|||
|
|
}
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
### 6. 使用例とテストケース
|
|||
|
|
```nyash
|
|||
|
|
// test_python_parser_phase1.nyash
|
|||
|
|
local py = new PythonParserBox()
|
|||
|
|
|
|||
|
|
// Phase 1: 基本的な関数定義と演算
|
|||
|
|
local code = """
|
|||
|
|
def add(x, y):
|
|||
|
|
return x + y
|
|||
|
|
|
|||
|
|
def multiply(x, y):
|
|||
|
|
return x * y
|
|||
|
|
|
|||
|
|
def calculate(a, b):
|
|||
|
|
sum_val = add(a, b)
|
|||
|
|
prod_val = multiply(a, b)
|
|||
|
|
return sum_val + prod_val
|
|||
|
|
"""
|
|||
|
|
|
|||
|
|
// パースしてJSON ASTを確認
|
|||
|
|
local json_ast = py.parse_to_json(code)
|
|||
|
|
print("JSON AST: " + json_ast)
|
|||
|
|
|
|||
|
|
// Nyash ASTに変換
|
|||
|
|
local nyash_ast = py.json_to_nyash_ast(json_ast)
|
|||
|
|
print("Conversion successful!")
|
|||
|
|
|
|||
|
|
// 実行(最初はCPython経由)
|
|||
|
|
local result = py.run(code + "\nprint(calculate(10, 5))")
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
## 📊 段階的な実装計画
|
|||
|
|
|
|||
|
|
### Week 1: 基盤構築
|
|||
|
|
- [ ] PythonParserBoxの基本構造
|
|||
|
|
- [ ] pyo3統合とPython環境初期化
|
|||
|
|
- [ ] parse_to_json基本実装
|
|||
|
|
- [ ] エラーハンドリング
|
|||
|
|
|
|||
|
|
### Week 2: Phase 1変換器
|
|||
|
|
- [ ] Phase1PythonAstの定義
|
|||
|
|
- [ ] Phase1Converterの実装
|
|||
|
|
- [ ] 基本的な文と式の変換
|
|||
|
|
- [ ] テストケース作成
|
|||
|
|
|
|||
|
|
### Week 3: 統合とテスト
|
|||
|
|
- [ ] インタープリター統合
|
|||
|
|
- [ ] CPython exec経由の実行
|
|||
|
|
- [ ] ベンチマーク準備
|
|||
|
|
- [ ] ドキュメント整備
|
|||
|
|
|
|||
|
|
## 🚀 期待される成果
|
|||
|
|
|
|||
|
|
### Phase 1完了時点で実現できること:
|
|||
|
|
1. **基本的なPythonコードの実行**
|
|||
|
|
- 関数定義、算術演算、条件分岐、ループ
|
|||
|
|
|
|||
|
|
2. **Nyash ASTへの変換**
|
|||
|
|
- 将来のMIR/JIT最適化への道筋
|
|||
|
|
|
|||
|
|
3. **統合開発環境**
|
|||
|
|
- PythonコードとNyashコードの混在実行
|
|||
|
|
|
|||
|
|
4. **性能測定基盤**
|
|||
|
|
- CPython実行 vs Nyash実行の比較
|
|||
|
|
|
|||
|
|
## 📡 テレメトリー出力例
|
|||
|
|
|
|||
|
|
```bash
|
|||
|
|
# 環境変数で制御
|
|||
|
|
export NYASH_PYTHONPARSER_TELEMETRY=1 # 基本統計
|
|||
|
|
export NYASH_PYTHONPARSER_TELEMETRY=2 # 詳細ログ
|
|||
|
|
export NYASH_PYTHONPARSER_STRICT=1 # フォールバック時にパニック
|
|||
|
|
|
|||
|
|
# 実行例
|
|||
|
|
./target/release/nyash test_python_parser.nyash
|
|||
|
|
|
|||
|
|
# 出力
|
|||
|
|
[PythonParser] Module: test.py (Python 3.11)
|
|||
|
|
Functions: 10 total
|
|||
|
|
Compiled: 7 (70%) → Nyash MIR/JIT
|
|||
|
|
Fallback: 3 (30%) → CPython exec
|
|||
|
|
- async_function: unsupported node 'AsyncFunctionDef' at line 23
|
|||
|
|
- generator_func: unsupported node 'Yield' at line 45
|
|||
|
|
- decorator_func: unsupported node 'decorator_list' at line 67
|
|||
|
|
|
|||
|
|
Unsupported Nodes Summary:
|
|||
|
|
AsyncFunctionDef: 1
|
|||
|
|
Yield: 2
|
|||
|
|
ClassDef: 1
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
## 📊 Differential Testingフレームワーク
|
|||
|
|
|
|||
|
|
```rust
|
|||
|
|
// CPythonとNyashの出力比較
|
|||
|
|
pub fn differential_test(code: &str) -> TestResult {
|
|||
|
|
// CPythonで実行(オラクル)
|
|||
|
|
let python_result = Python::with_gil(|py| {
|
|||
|
|
capture_python_execution(py, code)
|
|||
|
|
})?;
|
|||
|
|
|
|||
|
|
// Nyashで実行
|
|||
|
|
let nyash_result = execute_with_pythonparser(code)?;
|
|||
|
|
|
|||
|
|
// 結果比較
|
|||
|
|
compare_results(python_result, nyash_result)
|
|||
|
|
}
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
---
|
|||
|
|
作成日: 2025-08-27
|
|||
|
|
Phase 1実装の具体的な手順とエキスパートフィードバック統合
|