Implement NyashBox trait for core boxes - ArrayBox, BufferBox, FileBox, JSONBox, FutureBox, StreamBox, ResultBox

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

src/boxes/json/mod.rs

@@ -2,18 +2,67 @@
 // Nyashの箱システムによるJSON解析・生成を提供します。
 // 参考: 既存Boxの設計思想
 
+use crate::box_trait::{NyashBox, StringBox, BoolBox};
+use std::any::Any;
 use serde_json::{Value, Error};
 
+#[derive(Debug, Clone)]
 pub struct JSONBox {
     pub value: Value,
+    id: u64,
 }
 
 impl JSONBox {
     pub fn from_str(s: &str) -> Result<Self, Error> {
+        static mut COUNTER: u64 = 0;
+        let id = unsafe {
+            COUNTER += 1;
+            COUNTER
+        };
         let value = serde_json::from_str(s)?;
-        Ok(JSONBox { value })
+        Ok(JSONBox { value, id })
     }
+    
+    pub fn new(value: Value) -> Self {
+        static mut COUNTER: u64 = 0;
+        let id = unsafe {
+            COUNTER += 1;
+            COUNTER
+        };
+        JSONBox { value, id }
+    }
+    
     pub fn to_string(&self) -> String {
         self.value.to_string()
     }
 }
+
+impl NyashBox for JSONBox {
+    fn clone_box(&self) -> Box<dyn NyashBox> {
+        Box::new(self.clone())
+    }
+
+    fn to_string_box(&self) -> StringBox {
+        StringBox::new(self.value.to_string())
+    }
+
+    fn as_any(&self) -> &dyn Any {
+        self
+    }
+
+    fn type_name(&self) -> &'static str {
+        "JSONBox"
+    }
+
+    fn box_id(&self) -> u64 {
+        self.id
+    }
+
+    fn equals(&self, other: &dyn NyashBox) -> BoolBox {
+        if let Some(other_json) = other.as_any().downcast_ref::<JSONBox>() {
+            BoolBox::new(self.value == other_json.value)
+        } else {
+            BoolBox::new(false)
+        }
+    }
+}