rust-protocol: Add functions to convert between Value and (ValueType, i64).

common/rust-protocol/src/lib.rs

@@ -231,6 +231,25 @@ impl Value {
             Self::Humidity(_) => 3,
         }
     }
+
+    pub fn split(&self) -> Option<(ValueType, i64)> {
+        match self {
+            Self::Invalid => None,
+            Self::Time(t) => Some((ValueType::Time, *t as i64)),
+            Self::Temperature(t) => Some((ValueType::Temperature, *t as i64)),
+            Self::Pressure(p) => Some((ValueType::Pressure, *p as i64)),
+            Self::Humidity(h) => Some((ValueType::Humidity, *h as i64)),
+        }
+    }
+
+    pub fn combine(type_: ValueType, value: i64) -> Value {
+        match type_ {
+            ValueType::Time => Self::Time(value as u64),
+            ValueType::Temperature => Self::Temperature(value as i16),
+            ValueType::Pressure => Self::Pressure(value as u32),
+            ValueType::Humidity => Self::Humidity(value as u16),
+        }
+    }
 }
 
 #[derive(Debug, Clone, Copy, PartialEq)]