Move files to exp_legacy

exp_legacy/module/utils/token.lua

@@ -0,0 +1,69 @@
+local Token = {}
+
+local tokens = {}
+
+local counter = 0
+
+--- Assigns a unique id for the given var.
+-- This function cannot be called after on_init() or on_load() has run as that is a desync risk.
+-- Typically this is used to register functions, so the id can be stored in the global table
+-- instead of the function. This is because closures cannot be safely stored in the global table.
+-- @param  var<any>
+-- @return number the unique token for the variable.
+function Token.register(var)
+    if _LIFECYCLE == 8 then
+        error('Calling Token.register after on_init() or on_load() has run is a desync risk.', 2)
+    end
+
+    counter = counter + 1
+
+    tokens[counter] = var
+
+    return counter
+end
+
+function Token.get(token_id)
+    return tokens[token_id]
+end
+
+global.tokens = {}
+
+function Token.register_global(var)
+    local c = #global.tokens + 1
+
+    global.tokens[c] = var
+
+    return c
+end
+
+function Token.get_global(token_id)
+    return global.tokens[token_id]
+end
+
+function Token.set_global(token_id, var)
+    global.tokens[token_id] = var
+end
+
+local uid_counter = 0
+
+function Token.uid()
+    if _LIFECYCLE == 8 then
+        return Token.runtime_uid()
+    end
+
+    uid_counter = uid_counter + 1
+
+    return uid_counter
+end
+
+function Token.runtime_uid()
+    if not global.uid_counter then
+        global.uid_counter = 0
+    end
+
+    global.uid_counter = global.uid_counter + 1
+
+    return global.uid_counter+uid_counter
+end
+
+return Token