From 7249ca3a6fdf51f6b7ea66ac6854edd5e02ae5ec Mon Sep 17 00:00:00 2001
From: tanaka takashi <isazaka@gmail.com>
Date: Wed, 15 Jul 2026 20:00:24 +0900
Subject: feat: MMLパーサーと意味解析を厳格化
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- ppmckの終端分岐付きリピートとL制御トラックを実装
- case、構文構造、音長、エフェクト値域の検証を強化
- Pyxel拡張コマンドのarityと参照検証を追加
- リピート展開上限と構文・意味エラー時の合成停止を追加
- BNF、設計書、適合監査、回帰テストを更新
---
 src/mml_composemusic_mcp/parser_base.py | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/mml_composemusic_mcp/parser_base.py')

diff --git a/src/mml_composemusic_mcp/parser_base.py b/src/mml_composemusic_mcp/parser_base.py
index 506a33e..2625c5d 100644
--- a/src/mml_composemusic_mcp/parser_base.py
+++ b/src/mml_composemusic_mcp/parser_base.py
@@ -33,6 +33,11 @@ class ParserContext:
     def expect(self, *types: TokenType) -> Token | None:
         return self.match(*types)
 
+    def synchronize(self, *types: TokenType) -> None:
+        """Advance to a recovery token without ever consuming past EOF."""
+        while self.peek().type not in (*types, TokenType.EOF):
+            self.advance()
+
     def add_error(
         self,
         code: ErrorCode,
-- 
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