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Comment:s_expressions-templates-generic_integers: add public mutators for Format objects
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: 61b64dbec787cbffc11df087ce5777628338efc0
User & Date: nat on 2014-09-19 19:20:32
Other Links: manifest | tags
Context
2014-09-20
21:50
s_expressions-templates-generic_integers: add a Render procedure with client-provided default format check-in: 0aeafdbf62 user: nat tags: trunk
2014-09-19
19:20
s_expressions-templates-generic_integers: add public mutators for Format objects check-in: 61b64dbec7 user: nat tags: trunk
2014-09-18
20:08
s_expressions-templates-tests: a simple tests for discrete-type templates check-in: 6f0dd49985 user: nat tags: trunk
Changes
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Modified src/natools-s_expressions-templates-generic_integers.adb from [b65cf1ae02] to [d7b39cb7d8].

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               when Events.Add_Atom =>
                  case Commands.To_Align_Command
                    (To_String (Arguments.Current_Atom))
                  is
                     when Commands.Unknown_Align =>
                        null;
                     when Commands.Set_Left =>
                        State.Align := Left_Aligned;
                        State.Set_Align (Left_Aligned);
                     when Commands.Set_Center =>
                        State.Align := Centered;
                        State.Set_Align (Centered);
                     when Commands.Set_Right =>
                        State.Align := Right_Aligned;
                        State.Set_Align (Right_Aligned);
                  end case;
               when others =>
                  null;
            end case;

         when Commands.Align_Center =>
            State.Align := Centered;
            State.Set_Align (Centered);

         when Commands.Align_Left =>
            State.Align := Left_Aligned;
            State.Set_Align (Left_Aligned);

         when Commands.Align_Right =>
            State.Align := Right_Aligned;
            State.Set_Align (Right_Aligned);

         when Commands.Base =>
            declare
               New_Base : constant Atom_Arrays.Immutable_Reference
                 := Create (Arguments);
            State.Set_Symbols (Arguments);
            begin
               if not New_Base.Is_Empty
                 and then New_Base.Query.Data.all'Length >= 2
               then
                  State.Symbols := New_Base;
               end if;
            end;

         when Commands.Padding =>
            case Arguments.Current_Event is
               when Events.Add_Atom =>
                  State.Left_Padding := Create (Arguments.Current_Atom);
                  State.Right_Padding := State.Left_Padding;
               when others =>
                  return;
            end case;

            Arguments.Next (Event);
            case Event is
               when Events.Add_Atom =>
                  State.Right_Padding := Create (Arguments.Current_Atom);
                  State.Set_Right_Padding (Arguments.Current_Atom);
               when others =>
                  null;
            end case;

         when Commands.Padding_Left =>
            case Arguments.Current_Event is
               when Events.Add_Atom =>
                  State.Left_Padding := Create (Arguments.Current_Atom);
                  State.Set_Left_Padding (Arguments.Current_Atom);
               when others =>
                  null;
            end case;

         when Commands.Padding_Right =>
            case Arguments.Current_Event is
               when Events.Add_Atom =>
                  State.Right_Padding := Create (Arguments.Current_Atom);
                  State.Set_Right_Padding (Arguments.Current_Atom);
               when others =>
                  null;
            end case;

         when Commands.Sign =>
            case Arguments.Current_Event is
               when Events.Add_Atom =>
                  State.Positive_Sign := Create (Arguments.Current_Atom);
                  State.Set_Positive_Sign (Arguments.Current_Atom);
               when others =>
                  return;
            end case;

            Arguments.Next (Event);
            case Event is
               when Events.Add_Atom =>
                  State.Negative_Sign := Create (Arguments.Current_Atom);
                  State.Set_Negative_Sign (Arguments.Current_Atom);
               when others =>
                  null;
            end case;

         when Commands.Width =>
            case Arguments.Current_Event is
               when Events.Add_Atom =>
                  declare
                  State.Maximum_Width
                    := Width'Value (To_String (Arguments.Current_Atom));
                  State.Minimum_Width := State.Maximum_Width;
                     New_Width : constant Width
                       := Width'Value (To_String (Arguments.Current_Atom));
                  begin
                     State.Set_Maximum_Width (New_Width);
                     State.Set_Minimum_Width (New_Width);
                  end;
               when others =>
                  return;
            end case;

            Arguments.Next (Event);
            case Event is
               when Events.Add_Atom =>
                  State.Maximum_Width
                    := Width'Value (To_String (Arguments.Current_Atom));
                  State.Set_Maximum_Width
                    (Width'Value (To_String (Arguments.Current_Atom)));
               when others =>
                  return;
            end case;

            Arguments.Next (Event);
            case Event is
               when Events.Add_Atom =>
                  State.Overflow_Message := Create (Arguments.Current_Atom);
                  State.Set_Overflow_Message (Arguments.Current_Atom);
               when others =>
                  return;
            end case;

         when Commands.Width_Max =>
            case Arguments.Current_Event is
               when Events.Add_Atom =>
                  State.Maximum_Width
                    := Width'Value (To_String (Arguments.Current_Atom));
                  State.Set_Maximum_Width
                    (Width'Value (To_String (Arguments.Current_Atom)));
               when others =>
                  return;
            end case;

            Arguments.Next (Event);
            case Event is
               when Events.Add_Atom =>
                  State.Overflow_Message := Create (Arguments.Current_Atom);
                  State.Set_Overflow_Message (Arguments.Current_Atom);
               when others =>
                  return;
            end case;

         when Commands.Width_Min =>
            case Arguments.Current_Event is
               when Events.Add_Atom =>
                  State.Minimum_Width
                    := Width'Value (To_String (Arguments.Current_Atom));
                  State.Set_Minimum_Width
                    (Width'Value (To_String (Arguments.Current_Atom)));
               when others =>
                  null;
            end case;
      end case;
   end Update_Format;
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   is
      Parsed_Template : Format;
   begin
      Parse (Parsed_Template, Template);
      Output.Write (Render (Value, Parsed_Template));
   end Render;



   ---------------------
   -- Format Mutators --
   ---------------------

   procedure Set_Align (Object : in out Format; Value : in Alignment) is
   begin
      Object.Align := Value;
   end Set_Align;


   procedure Set_Left_Padding
     (Object : in out Format;
      Symbol : in Atom_Refs.Immutable_Reference) is
   begin
      Object.Left_Padding := Symbol;
   end Set_Left_Padding;


   procedure Set_Left_Padding
     (Object : in out Format;
      Symbol : in Atom) is
   begin
      Set_Left_Padding (Object, Create (Symbol));
   end Set_Left_Padding;


   procedure Set_Maximum_Width (Object : in out Format; Value : in Width) is
   begin
      Object.Maximum_Width := Value;

      if Object.Minimum_Width > Object.Maximum_Width then
         Object.Minimum_Width := Value;
      end if;
   end Set_Maximum_Width;


   procedure Set_Minimum_Width (Object : in out Format; Value : in Width) is
   begin
      Object.Minimum_Width := Value;

      if Object.Minimum_Width > Object.Maximum_Width then
         Object.Maximum_Width := Value;
      end if;
   end Set_Minimum_Width;


   procedure Set_Negative_Sign
     (Object : in out Format;
      Sign : in Atom_Refs.Immutable_Reference) is
   begin
      Object.Negative_Sign := Sign;
   end Set_Negative_Sign;


   procedure Set_Negative_Sign
     (Object : in out Format;
      Sign : in Atom) is
   begin
      Set_Negative_Sign (Object, Create (Sign));
   end Set_Negative_Sign;


   procedure Set_Overflow_Message
     (Object : in out Format;
      Message : in Atom_Refs.Immutable_Reference) is
   begin
      Object.Overflow_Message := Message;
   end Set_Overflow_Message;


   procedure Set_Overflow_Message
     (Object : in out Format;
      Message : in Atom) is
   begin
      Set_Overflow_Message (Object, Create (Message));
   end Set_Overflow_Message;


   procedure Set_Positive_Sign
     (Object : in out Format;
      Sign : in Atom_Refs.Immutable_Reference) is
   begin
      Object.Positive_Sign := Sign;
   end Set_Positive_Sign;


   procedure Set_Positive_Sign
     (Object : in out Format;
      Sign : in Atom) is
   begin
      Set_Positive_Sign (Object, Create (Sign));
   end Set_Positive_Sign;


   procedure Set_Right_Padding
     (Object : in out Format;
      Symbol : in Atom_Refs.Immutable_Reference) is
   begin
      Object.Right_Padding := Symbol;
   end Set_Right_Padding;


   procedure Set_Right_Padding
     (Object : in out Format;
      Symbol : in Atom) is
   begin
      Set_Right_Padding (Object, Create (Symbol));
   end Set_Right_Padding;


   procedure Set_Symbols
     (Object : in out Format;
      Symbols : in Atom_Arrays.Immutable_Reference) is
   begin
      if not Symbols.Is_Empty and then Symbols.Query.Data.all'Length >= 2 then
         Object.Symbols := Symbols;
      end if;
   end Set_Symbols;


   procedure Set_Symbols
     (Object : in out Format;
      Expression : in out S_Expressions.Descriptor'Class) is
   begin
      Set_Symbols (Object, Create (Expression));
   end Set_Symbols;

end Natools.S_Expressions.Templates.Generic_Integers;

Modified src/natools-s_expressions-templates-generic_integers.ads from [013201ba5d] to [424d915805].

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with Natools.Storage_Pools;

generic
   type T is range <>;
package Natools.S_Expressions.Templates.Generic_Integers is
   pragma Preelaborate;

   --------------------------
   -- High-Level Interface --
   --------------------------

   type Format is private;
   type Format is tagged private;

   function Render (Value : T; Template : Format) return Atom;
      --  Render Value according to Template

   procedure Parse
     (Template : in out Format;
      Expression : in out Lockable.Descriptor'Class);
      --  Read Expression to fill Template

   procedure Render
     (Output : in out Ada.Streams.Root_Stream_Type'Class;
      Template : in out Lockable.Descriptor'Class;
      Value : in T);
      --  Read a rendering format from Template and use it on Value

private

   ---------------------
   -- Auxiliary Types --
   ---------------------

   type Alignment is (Left_Aligned, Centered, Right_Aligned);
   type Width is range 0 .. 10000;

   subtype Base_T is T'Base;
   subtype Natural_T is Base_T range 0 .. Base_T'Last;


   type Atom_Array
     is array (Natural_T range <>) of Atom_Refs.Immutable_Reference;

   function Create (Atom_List : in out S_Expressions.Descriptor'Class)
     return Atom_Array;
      --  Build an array consisting of consecutive atoms found in Atom_List

   procedure Reverse_Render
     (Value : in Natural_T;
      Symbols : in Atom_Array;
      Output : in out Atom_Buffers.Atom_Buffer;
      Length : out Width)
     with Pre => Symbols'Length >= 2 and Symbols'First = 0;
      --  Create a little-endian image of Value using the given symbol table


   package Atom_Arrays is new References
     (Atom_Array,
      Storage_Pools.Access_In_Default_Pool'Storage_Pool,
      Storage_Pools.Access_In_Default_Pool'Storage_Pool);

   function Create (Atom_List : in out S_Expressions.Descriptor'Class)
     return Atom_Arrays.Immutable_Reference;
      --  Build an array reference consisting of
      --  consecutive atoms found in Atom_List.

   function Decimal return Atom_Arrays.Immutable_Reference
     with Post => not Decimal'Result.Is_Empty;
      --  Return a reference to usual decimal representation


   ---------------------
   -- Format Mutators --
   ---------------------

   procedure Set_Align (Object : in out Format; Value : in Alignment);

   procedure Set_Left_Padding
     (Object : in out Format;
      Symbol : in Atom_Refs.Immutable_Reference);
   procedure Set_Left_Padding
     (Object : in out Format;
      Symbol : in Atom);

   procedure Set_Maximum_Width (Object : in out Format; Value : in Width);

   procedure Set_Minimum_Width (Object : in out Format; Value : in Width);

   procedure Set_Negative_Sign
     (Object : in out Format;
      Sign : in Atom_Refs.Immutable_Reference);
   procedure Set_Negative_Sign
     (Object : in out Format;
      Sign : in Atom);

   procedure Set_Overflow_Message
     (Object : in out Format;
      Message : in Atom_Refs.Immutable_Reference);
   procedure Set_Overflow_Message
     (Object : in out Format;
      Message : in Atom);

   procedure Set_Positive_Sign
     (Object : in out Format;
      Sign : in Atom_Refs.Immutable_Reference);
   procedure Set_Positive_Sign
     (Object : in out Format;
      Sign : in Atom);

   procedure Set_Right_Padding
     (Object : in out Format;
      Symbol : in Atom_Refs.Immutable_Reference);
   procedure Set_Right_Padding
     (Object : in out Format;
      Symbol : in Atom);

   procedure Set_Symbols
     (Object : in out Format;
      Symbols : in Atom_Arrays.Immutable_Reference);
   procedure Set_Symbols
     (Object : in out Format;
      Expression : in out S_Expressions.Descriptor'Class);


private

   Base_10 : Atom_Arrays.Immutable_Reference;
      --  Cache for the often-used decimal representation

   procedure Reverse_Render
     (Value : in Natural_T;
      Symbols : in Atom_Array;
      Output : in out Atom_Buffers.Atom_Buffer;
      Length : out Width)
     with Pre => Symbols'Length >= 2 and Symbols'First = 0;
      --  Create a little-endian image of Value using the given symbol table

   type Format is record
   type Format is tagged record
      Symbols : Atom_Arrays.Immutable_Reference;
      Positive_Sign : Atom_Refs.Immutable_Reference;
      Negative_Sign : Atom_Refs.Immutable_Reference;

      Minimum_Width : Width := 0;
      Align : Alignment := Right_Aligned;
      Left_Padding : Atom_Refs.Immutable_Reference;
      Right_Padding : Atom_Refs.Immutable_Reference;

      Maximum_Width : Width := Width'Last;
      Overflow_Message : Atom_Refs.Immutable_Reference;
   end record;


end Natools.S_Expressions.Templates.Generic_Integers;

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