HTTP stuff now uses keyword parser.

luprex/core/cpp/luastack.hpp

@@ -531,14 +531,15 @@ class LuaKeywordParser {
         };
     };
 private:
+    bool not_table_;
     lua_State *L_;
     int slot_;
     eng::set<const char *, cmp_char> parsed_;
 
     void init(const lua_State *L, int slot);
 public:
-    // The constructor will throw a lua error if the
-    // slot is not a table.
+    // If the slot is not a table, sets the not_table
+    // flag and creates a dummy table in the slot.
     LuaKeywordParser(lua_State *L, int slot);
     LuaKeywordParser(const LuaStack &LS, LuaSlot slot) : LuaKeywordParser(LS.state(), slot.index()) {}
 
@@ -546,9 +547,12 @@ public:
     // Return true if the value is non-nil.
     bool parse(LuaSlot slot, const char *kw);
 
-    // Check if there are any keywords in the table that
-    // were never parsed.  If so, throw an error.
-    void check_unparsed_keywords();
+    // Check if there were any errors.  If so, return an
+    // error message.
+    eng::string final_check();
+
+    // Check if there are any errors.  If so, throw a lua error.
+    void final_check_throw();
 
     // Fetch the state pointer. 
     lua_State *state() const { return L_; }