Initial commit

type-map/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "type-map"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]

type-map/src/lib.rs

@@ -0,0 +1,28 @@
+use std::collections::HashMap;
+
+#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, PartialOrd, Ord)]
+pub struct CommTypeId(pub u8);
+
+#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, PartialOrd, Ord)]
+pub struct DataTypeId(pub u16);
+
+#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub struct Version(pub u16);
+
+/// A single protocol version's type dictionary.
+/// Compiled into the client, or loaded by the host via the registry.
+#[derive(Clone, Debug)]
+pub struct TypeMap {
+    pub version: Version,
+    pub comm_types: HashMap<String, u8>,
+    pub data_types: HashMap<String, u16>,
+}
+
+impl TypeMap {
+    pub fn comm_id(&self, name: &str) -> Option<u8> {
+        self.comm_types.get(name).copied()
+    }
+    pub fn data_id(&self, name: &str) -> Option<u16> {
+        self.data_types.get(name).copied()
+    }
+}