refactor(vm): Phase 4 - Void Guard統一化(重複削減)
boxes_void_guards.rs新規作成で28行の重複を排除 実装内容: - handle_void_method()ヘルパー関数作成 - 7種類のメソッド(is_eof/length/substring/push/get_position/get_line/get_column)統一 - boxes.rs: 30行→18行(12行削減) - 重複ブロック2箇所→シングルソース化 効果: - 保守性向上: 単一の真実の源(Single Source of Truth) - 可読性向上: 大きなmatchブロック→簡潔なヘルパー呼び出し - バグ修正容易化: 1箇所修正で全体に反映 テスト: Void.is_eof(), Void.length()正常動作確認
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@ -152,28 +152,16 @@ impl MirInterpreter {
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// e.g., `A or not last.is_eof()` should not crash when last is absent.
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match self.reg_load(box_val)? {
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VMValue::Void => {
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match method {
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"is_eof" => { if let Some(d) = dst { self.regs.insert(d, VMValue::Bool(false)); } return Ok(()); }
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"length" => { if let Some(d) = dst { self.regs.insert(d, VMValue::Integer(0)); } return Ok(()); }
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"substring" => { if let Some(d) = dst { self.regs.insert(d, VMValue::String(String::new())); } return Ok(()); }
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"push" => { if let Some(d) = dst { self.regs.insert(d, VMValue::Void); } return Ok(()); }
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"get_position" => { if let Some(d) = dst { self.regs.insert(d, VMValue::Integer(0)); } return Ok(()); }
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"get_line" => { if let Some(d) = dst { self.regs.insert(d, VMValue::Integer(1)); } return Ok(()); }
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"get_column" => { if let Some(d) = dst { self.regs.insert(d, VMValue::Integer(1)); } return Ok(()); }
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_ => {}
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if let Some(val) = super::boxes_void_guards::handle_void_method(method) {
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if let Some(d) = dst { self.regs.insert(d, val); }
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return Ok(());
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}
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}
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VMValue::BoxRef(ref b) => {
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if b.as_any().downcast_ref::<crate::box_trait::VoidBox>().is_some() {
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match method {
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"is_eof" => { if let Some(d) = dst { self.regs.insert(d, VMValue::Bool(false)); } return Ok(()); }
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"length" => { if let Some(d) = dst { self.regs.insert(d, VMValue::Integer(0)); } return Ok(()); }
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"substring" => { if let Some(d) = dst { self.regs.insert(d, VMValue::String(String::new())); } return Ok(()); }
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"push" => { if let Some(d) = dst { self.regs.insert(d, VMValue::Void); } return Ok(()); }
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"get_position" => { if let Some(d) = dst { self.regs.insert(d, VMValue::Integer(0)); } return Ok(()); }
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"get_line" => { if let Some(d) = dst { self.regs.insert(d, VMValue::Integer(1)); } return Ok(()); }
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"get_column" => { if let Some(d) = dst { self.regs.insert(d, VMValue::Integer(1)); } return Ok(()); }
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_ => {}
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if let Some(val) = super::boxes_void_guards::handle_void_method(method) {
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if let Some(d) = dst { self.regs.insert(d, val); }
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return Ok(());
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}
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}
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}
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