add Byte type

mers_lib/src/data/byte.rs

@@ -0,0 +1,65 @@
+use std::{any::Any, fmt::Display, sync::Arc};
+
+use super::{MersData, MersType, Type};
+
+#[derive(Debug, Clone, Copy)]
+pub struct Byte(pub u8);
+
+impl MersData for Byte {
+    fn is_eq(&self, other: &dyn MersData) -> bool {
+        if let Some(other) = other.as_any().downcast_ref::<Self>() {
+            other.0 == self.0
+        } else {
+            false
+        }
+    }
+    fn clone(&self) -> Box<dyn MersData> {
+        Box::new(Clone::clone(self))
+    }
+    fn as_type(&self) -> super::Type {
+        Type::new(ByteT)
+    }
+    fn as_any(&self) -> &dyn Any {
+        self
+    }
+    fn mut_any(&mut self) -> &mut dyn Any {
+        self
+    }
+    fn to_any(self) -> Box<dyn Any> {
+        Box::new(self)
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct ByteT;
+impl MersType for ByteT {
+    fn is_same_type_as(&self, other: &dyn MersType) -> bool {
+        other.as_any().downcast_ref::<Self>().is_some()
+    }
+    fn is_included_in_single(&self, target: &dyn MersType) -> bool {
+        self.is_same_type_as(target)
+    }
+    fn subtypes(&self, acc: &mut Type) {
+        acc.add(Arc::new(self.clone()));
+    }
+    fn as_any(&self) -> &dyn Any {
+        self
+    }
+    fn mut_any(&mut self) -> &mut dyn Any {
+        self
+    }
+    fn to_any(self) -> Box<dyn Any> {
+        Box::new(self)
+    }
+}
+
+impl Display for Byte {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", self.0)
+    }
+}
+impl Display for ByteT {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "Byte")
+    }
+}