Implement Phase 8.9: Remove transparency system and add weak reference nullification

Co-authored-by: moe-charm <217100418+moe-charm@users.noreply.github.com>

src/interpreter/expressions.rs

@@ -781,6 +781,11 @@ impl NyashInterpreter {
                     }
                 }
                 
+                // 🔗 Phase 8.9: Weak reference invalidation after user fini
+                let target_info = obj_value.to_string_box().value;
+                eprintln!("🔗 DEBUG: Triggering weak reference invalidation for fini: {}", target_info);
+                self.trigger_weak_reference_invalidation(&target_info);
+                
                 // インスタンスの内部的な解放処理
                 instance.fini().map_err(|e| RuntimeError::InvalidOperation {
                     message: e,
@@ -1087,12 +1092,8 @@ impl NyashInterpreter {
             }
         }
         
-        // 🔥 Phase 8.8: pack透明化システム - ビルトイン自動呼び出し (先行チェック)
-        if is_builtin && method == parent {
-            // 透明化: `from StringBox()` → 内部的にビルトインBox作成・統合
-            drop(box_declarations); // ロック解放
-            return self.execute_builtin_constructor_call(parent, current_instance_val.clone_box(), arguments);
-        }
+        // 🔥 Phase 8.9: Transparency system removed - all delegation must be explicit
+        // Removed: if is_builtin && method == parent { ... execute_builtin_constructor_call ... }
         
         if is_builtin {
             // ビルトインBoxの場合、ロックを解放してからメソッド呼び出し
@@ -1250,87 +1251,6 @@ impl NyashInterpreter {
         }
     }
     
-    /// 🔥 Phase 8.8: pack透明化システム - ビルトインBoxコンストラクタ統合
-    /// `from StringBox(content)` の透明処理: StringBoxを作成して現在のインスタンスに統合
-    fn execute_builtin_constructor_call(&mut self, builtin_name: &str, current_instance: Box<dyn NyashBox>, arguments: &[ASTNode])
-        -> Result<Box<dyn NyashBox>, RuntimeError> {
-        
-        // 引数を評価
-        let mut arg_values = Vec::new();
-        for arg in arguments {
-            arg_values.push(self.execute_expression(arg)?);
-        }
-        
-        // ビルトインBoxの種類に応じて適切なインスタンスを作成
-        match builtin_name {
-            "StringBox" => {
-                if arg_values.len() != 1 {
-                    return Err(RuntimeError::InvalidOperation {
-                        message: format!("StringBox constructor expects 1 argument, got {}", arg_values.len()),
-                    });
-                }
-                
-                let content = arg_values[0].to_string_box().value;
-                // StringBoxインスタンスを作成
-                let string_box = StringBox::new(content);
-                
-                // 現在のインスタンスが継承Boxの場合、StringBox部分を設定
-                // この処理は、ユーザー定義Box内部にStringBoxデータを埋め込む処理
-                // 実際の実装では、現在のインスタンスの特定フィールドに設定するなど
-                // より複雑な統合処理が必要になる可能性がある
-                
-                // 現在のバージョンでは、成功したことを示すVoidBoxを返す
-                Ok(Box::new(VoidBox::new()))
-            }
-            "IntegerBox" => {
-                if arg_values.len() != 1 {
-                    return Err(RuntimeError::InvalidOperation {
-                        message: format!("IntegerBox constructor expects 1 argument, got {}", arg_values.len()),
-                    });
-                }
-                
-                let value = if let Ok(int_val) = arg_values[0].to_string_box().value.parse::<i64>() {
-                    int_val
-                } else {
-                    return Err(RuntimeError::TypeError {
-                        message: format!("Cannot convert '{}' to integer", arg_values[0].to_string_box().value),
-                    });
-                };
-                
-                let integer_box = IntegerBox::new(value);
-                Ok(Box::new(VoidBox::new()))
-            }
-            "MathBox" => {
-                // MathBoxは引数なしのコンストラクタ
-                if arg_values.len() != 0 {
-                    return Err(RuntimeError::InvalidOperation {
-                        message: format!("MathBox constructor expects 0 arguments, got {}", arg_values.len()),
-                    });
-                }
-                
-                let math_box = MathBox::new();
-                Ok(Box::new(VoidBox::new()))
-            }
-            "ArrayBox" => {
-                // ArrayBoxも引数なしのコンストラクタ
-                if arg_values.len() != 0 {
-                    return Err(RuntimeError::InvalidOperation {
-                        message: format!("ArrayBox constructor expects 0 arguments, got {}", arg_values.len()),
-                    });
-                }
-                
-                let array_box = ArrayBox::new();
-                Ok(Box::new(VoidBox::new()))
-            }
-            _ => {
-                // 他のビルトインBoxは今後追加
-                Err(RuntimeError::InvalidOperation {
-                    message: format!("Builtin constructor for '{}' not yet implemented in transparency system", builtin_name),
-                })
-            }
-        }
-    }
-    
     /// 🔥 ビルトインBoxのメソッド呼び出し
     fn execute_builtin_box_method(&mut self, parent: &str, method: &str, mut current_instance: Box<dyn NyashBox>, arguments: &[ASTNode]) 
         -> Result<Box<dyn NyashBox>, RuntimeError> {

src/parser/expressions.rs

@@ -516,9 +516,13 @@ impl NyashParser {
                 }
             }
         } else {
-            // DOTがない場合: from Parent() 形式 - 透明化システム
-            // 🔥 Pack透明化: Parent名をmethod名として使用
-            parent.clone()
+            // DOTがない場合: from Parent() 形式 - 透明化システム廃止
+            // Phase 8.9: 明示的birth()構文を強制
+            let line = self.current_token().line;
+            return Err(ParseError::TransparencySystemRemoved {
+                suggestion: format!("Use 'from {}.birth()' instead of 'from {}()'", parent, parent),
+                line,
+            });
         };
         
         // 引数リストをパース

src/parser/mod.rs

@@ -77,6 +77,9 @@ pub enum ParseError {
     #[error("🚨 Infinite loop detected in parser at {location} - token: {token:?} at line {line}")]
     InfiniteLoop { location: String, token: TokenType, line: usize },
     
+    #[error("🔥 Transparency system removed: {suggestion} at line {line}")]
+    TransparencySystemRemoved { suggestion: String, line: usize },
+    
     #[error("Tokenize error: {0}")]
     TokenizeError(#[from] TokenizeError),
 }

test_pack_transparency_final.nyash

@@ -36,7 +36,7 @@ box Calculator from MathBox {
     init { precision }
     
     birth(precisionLevel) {
-        from MathBox()  # 透明化（引数なし）
+        from MathBox.birth()  # Explicit syntax after Phase 8.9
         me.precision = precisionLevel
     }
     
@@ -58,4 +58,4 @@ print("3. MathBox透明化:")
 local calc = new Calculator("高精度")
 print(calc.getPrecision())
 
-print("=== 全テスト成功！pack透明化システム完了 ===")
+print("=== 全テスト成功！pack透明化システム完了 ===")テム完了 ===")

test_phase_8_9_error_cases.nyash

@@ -0,0 +1,36 @@
+# Phase 8.9: Error case tests
+# These should all produce compile errors after transparency system removal
+
+print("=== Error Test Cases (should all fail after Phase 8.9) ===")
+
+# Error Case 1: Simple transparency syntax
+box BadString from StringBox {
+    init { prefix }
+    
+    birth(content) {
+        from StringBox(content)  # ❌ Should error
+        me.prefix = "bad"
+    }
+}
+
+# Error Case 2: Multiple argument transparency
+box BadInteger from IntegerBox {
+    init { multiplier }
+    
+    birth(value) {
+        from IntegerBox(value)  # ❌ Should error
+        me.multiplier = 2
+    }
+}
+
+# Error Case 3: Zero argument transparency
+box BadMath from MathBox {
+    init { precision }
+    
+    birth() {
+        from MathBox()  # ❌ Should error
+        me.precision = "high"
+    }
+}
+
+print("=== If you see this message, transparency system was NOT properly removed! ===")

test_phase_8_9_explicit_birth.nyash

@@ -0,0 +1,59 @@
+# Phase 8.9: Test explicit birth() syntax
+# This file tests that explicit birth() calls work correctly
+
+print("=== Testing explicit birth() syntax ===")
+
+# Test 1: Basic explicit birth() call
+box SimpleBox {
+    init { content }
+    
+    birth(data) {
+        me.content = data
+        print("SimpleBox birth: " + data)
+    }
+    
+    getContent() {
+        return me.content
+    }
+}
+
+local simple = new SimpleBox("test_data")
+print("Content: " + simple.getContent())
+
+# Test 2: Explicit birth() with inheritance
+box EnhancedString from StringBox {
+    init { prefix }
+    
+    birth(content, prefixStr) {
+        from StringBox.birth(content)  # ✅ Explicit syntax
+        me.prefix = prefixStr
+        print("EnhancedString birth: " + prefixStr + " -> " + content)
+    }
+    
+    override toString() {
+        return me.prefix + ": " + from StringBox.toString()
+    }
+}
+
+local enhanced = new EnhancedString("Hello World", "MESSAGE")
+print("Enhanced string: " + enhanced.toString())
+
+# Test 3: Multiple inheritance levels
+box SuperEnhancedString from EnhancedString {
+    init { suffix }
+    
+    birth(content, prefixStr, suffixStr) {
+        from EnhancedString.birth(content, prefixStr)  # ✅ Explicit parent birth
+        me.suffix = suffixStr
+        print("SuperEnhancedString birth: " + suffixStr)
+    }
+    
+    override toString() {
+        return from EnhancedString.toString() + " [" + me.suffix + "]"
+    }
+}
+
+local superEnh = new SuperEnhancedString("Amazing", "SUPER", "END")
+print("Super enhanced: " + superEnh.toString())
+
+print("=== All explicit birth() tests passed ===")

test_phase_8_9_transparency_removal.nyash

@@ -0,0 +1,84 @@
+# Phase 8.9: birth() Unified System Test
+# Test 1: Transparency system must produce compile errors
+# Test 2: Explicit birth() syntax must work correctly
+# Test 3: Weak reference nullification after fini()
+
+print("=== Phase 8.9: Testing transparency removal and explicit birth() syntax ===")
+
+# Test 1: This should produce a compile error after changes
+# from StringBox(content)  # ❌ Should error after transparency removal
+
+# Test 2: Explicit birth() syntax - should work correctly
+box EnhancedString from StringBox {
+    init { prefix }
+    
+    birth(content, prefixStr) {
+        from StringBox.birth(content)  # ✅ Explicit syntax - must work
+        me.prefix = prefixStr
+    }
+    
+    override toString() {
+        return me.prefix + ": " + from StringBox.toString()
+    }
+}
+
+print("Test 2: Explicit birth() syntax")
+local enhanced = new EnhancedString("Hello World", "Enhanced")
+print(enhanced.toString())
+
+# Test 3: Weak reference nullification after fini
+box CPU {
+    init { name, memory }
+    
+    birth(cpuName) {
+        me.name = cpuName
+        print("CPU " + me.name + " initialized")
+    }
+    
+    fini() {
+        print("CPU " + me.name + " finalizing...")
+        if (me.memory != null) {
+            me.memory.cleanup()
+        }
+        print("CPU " + me.name + " finalized")
+    }
+}
+
+box Memory {
+    init { data, weak cpu_ref }
+    
+    birth(cpu) {
+        me.data = "memory_data"
+        me.cpu_ref = cpu  # This becomes a weak reference
+        print("Memory initialized with weak CPU reference")
+    }
+    
+    checkCPU() {
+        if (me.cpu_ref != null) {
+            return "CPU is alive: " + me.cpu_ref.name
+        } else {
+            return "CPU reference is null"
+        }
+    }
+    
+    cleanup() {
+        print("Memory cleanup called")
+        me.data = "cleaned"
+    }
+}
+
+print("Test 3: Weak reference nullification after fini")
+local cpu = new CPU("TestCPU")
+local memory = new Memory(cpu)
+cpu.memory = memory
+
+# Before fini
+print("Before CPU fini: " + memory.checkCPU())
+
+# After fini - weak reference should be nullified
+cpu.fini()
+cpu = null
+
+print("After CPU fini: " + memory.checkCPU())
+
+print("=== Phase 8.9 tests completed ===")