------------------------------------------------------------------------------
--                                                                          --
--                            Matreshka Project                             --
--                                                                          --
--         Localization, Internationalization, Globalization for Ada        --
--                                                                          --
--                              Tools Component                             --
--                                                                          --
------------------------------------------------------------------------------
--                                                                          --
-- Copyright © 2011-2015, Vadim Godunko <vgodunko@gmail.com>                --
-- All rights reserved.                                                     --
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-- Redistribution and use in source and binary forms, with or without       --
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--  * Redistributions in binary form must reproduce the above copyright     --
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--  * Neither the name of the Vadim Godunko, IE nor the names of its        --
--    contributors may be used to endorse or promote products derived from  --
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--                                                                          --
------------------------------------------------------------------------------
--  $Revision: 5259 $ $Date: 2015-05-06 17:32:50 +0300 (Ср, 06 мая 2015) $
------------------------------------------------------------------------------
with League.String_Vectors;
with League.Strings;
with Ada.Containers.Ordered_Maps;
with Ada.Containers.Vectors;
with Matreshka.Internals.Finite_Automatons;

package UAFLEX.Nodes is

   type Node_Kind is (Text, Rule, Macro, Name_List);

   type Node (Kind : Node_Kind := Node_Kind'First) is record
      case Kind is
         when Text =>
            Value : League.Strings.Universal_String;
         when Rule =>
            Regexp : League.Strings.Universal_String;
            Action : League.Strings.Universal_String;
         when Macro =>
            Name : League.Strings.Universal_String;
            Text : League.Strings.Universal_String;
         when Name_List =>
            List : League.String_Vectors.Universal_String_Vector;
      end case;
   end record;

   subtype Rule_Node is Node (Rule);

   function To_Node (Value : League.Strings.Universal_String) return Node;
   function To_Action (Value : League.Strings.Universal_String) return Node;

   Empty_Name_List : constant Node (Name_List) :=
     (Kind => Name_List, List => <>);

   use type League.Strings.Universal_String;

   package Macro_Maps is new Ada.Containers.Ordered_Maps
     (League.Strings.Universal_String,   --  Macro name
      League.Strings.Universal_String);  --  Macro value

   package Positive_Vectors is new Ada.Containers.Vectors
     (Index_Type   => Positive,
      Element_Type => Positive);

   type Start_Condition is record
      Exclusive : Boolean;
      Rules     : Positive_Vectors.Vector;
   end record;

   package Start_Condition_Maps is new Ada.Containers.Ordered_Maps
     (League.Strings.Universal_String,   --  Condition name
      Start_Condition);

   type Shared_Pattern_Array_Access is access all
     Matreshka.Internals.Finite_Automatons.Shared_Pattern_Array;

   --  List of regexp from input file
   Rules      : League.String_Vectors.Universal_String_Vector;
   --  List of DISTINCT action from input file
   Actions    : League.String_Vectors.Universal_String_Vector;
   --  Map rule index to action index
   Indexes    : Positive_Vectors.Vector;
   --  Map rule index to input file line number
   Lines      : Positive_Vectors.Vector;
   --  Map condition name to Start_Condition
   Conditions : Start_Condition_Maps.Map;
   --  Map macros name to macros value
   Macros     : Macro_Maps.Map;
   --  Array of compiled regexps
   Regexp     : Shared_Pattern_Array_Access;

   Success : Boolean := True;

   procedure Add_Start_Conditions
     (List      : League.String_Vectors.Universal_String_Vector;
      Exclusive : Boolean);

   procedure Add_Rule
     (RegExp : League.Strings.Universal_String;
      Action : League.Strings.Universal_String;
      Line   : Positive);

end UAFLEX.Nodes;