Fix the Lua tokenizer API

aiserver.py

@@ -923,7 +923,12 @@ def load_lua_scripts():
 #  Decode tokens into a string using current tokenizer
 #==================================================================#
 def lua_decode(tokens):
+    tokens = list(tokens.values())
     assert type(tokens) is list
+    if("tokenizer" not in globals()):
+        from transformers import GPT2TokenizerFast
+        global tokenizer
+        tokenizer = GPT2TokenizerFast.from_pretrained("gpt2")
     return tokenizer.decode(tokens)
 
 #==================================================================#
@@ -931,6 +936,11 @@ def lua_decode(tokens):
 #==================================================================#
 def lua_encode(string):
     assert type(string) is str
+    if("tokenizer" not in globals()):
+        thinking = False
+        from transformers import GPT2TokenizerFast
+        global tokenizer
+        tokenizer = GPT2TokenizerFast.from_pretrained("gpt2")
     return tokenizer.encode(string, max_length=int(4e9), truncation=True)
 
 #==================================================================#

bridge.lua

@@ -666,10 +666,8 @@ return function(_python, _bridged)
             return
         end
         local encoded = {}
-        local i = 1
-        for token in _python.iter(bridged.encode(str)) do
-            encoded[i] = token
-            i = i + 1
+        for i, token in _python.enumerate(bridged.encode(str)) do
+            encoded[i+1] = math.tointeger(token)
         end
         return encoded
     end
@@ -681,17 +679,20 @@ return function(_python, _bridged)
             error("`decode` takes a number or table of numbers as argument, but got a " .. type(tok))
             return
         end
-        if type(tok) ~= "number" then
+        if type(tok) == "number" then
             tok = {tok}
         end
+        local _tok = {}
+        local _v
         for k, v in ipairs(tok) do
-            tok[k] = math.tointeger(v)
-            if tok[k] == nil then
+            _v = math.tointeger(v)
+            if _v == nil then
                 error "`decode` got a table with one or more non-integer values"
                 return
             end
+            _tok[k] = _v
         end
-        return bridged.decode(_python.builtins.list(tok))
+        return bridged.decode(_tok)
     end
 
     ---@return nil