split @load apart, add @run

etlua.lua

@@ -169,7 +169,14 @@ do
       if not (success) then
         return nil, err
       end
-      return self:load(self:chunks_to_lua())
+      local fn
+      fn, err = self:load(self:chunks_to_lua())
+      if not (fn) then
+        return nil, err
+      end
+      return function(...)
+        return self:run(fn, ...)
+      end
     end,
     parse = function(self, str)
       self.str = str
@@ -230,7 +237,9 @@ do
         end
         return nil, err
       end
-      return function(env, buffer)
+      return fn
+    end,
+    run = function(self, fn, env, buffer)
       if env == nil then
         env = { }
       end
@@ -248,7 +257,6 @@ do
       })
       setfenv(fn, combined_env)
       return fn(buffer, #buffer, tostring, concat, html_escape)
-      end
     end,
     chunks_to_lua = function(self)
       local buffer = {

etlua.moon

@@ -132,7 +132,9 @@ class Parser
   compile: (str) =>
     success, err = @parse str
     return nil, err unless success
-    @load @chunks_to_lua!
+    fn, err = @load @chunks_to_lua!
+    return nil, err unless fn
+    (...) -> @run fn, ...
 
   parse: (@str) =>
     assert type(@str) == "string", "expecting string for parse"
@@ -163,6 +165,7 @@ class Parser
     source_line = get_line @str, source_line_no
     "#{err_msg} [#{source_line_no}]: #{source_line}"
 
+  -- converts lua string into template function
   load: (code, name="etlua") =>
     code_fn = do
       code_ref = code
@@ -179,7 +182,10 @@ class Parser
 
       return nil, err
 
-    (env={}, buffer={}) ->
+    fn
+
+  -- takes a function from @load and executes it with correct parameters
+  run: (fn, env={}, buffer={}) =>
     combined_env = setmetatable {}, __index: (name) =>
       val = env[name]
       val = _G[name] if val == nil