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Overview
Comment:s_expressions-dynamic_interpreter: backup of the current Interpreter interface before making it read-only
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: d9a7acb07a4bb4eed7c797a303b1efe9a5a97d8c
User & Date: nat on 2014-05-13 20:33:54
Other Links: manifest | tags
Context
2014-05-14
18:33
s_expressions-interpreters: make commands and interpreters read-only during execution check-in: 07db27cc2f user: nat tags: trunk
2014-05-13
20:33
s_expressions-dynamic_interpreter: backup of the current Interpreter interface before making it read-only check-in: d9a7acb07a user: nat tags: trunk
2014-05-12
17:22
s_expressions-interpreter_tests: use the new Add procedure, to keep complete coverage check-in: db048daa0f user: nat tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Added src/natools-s_expressions-dynamic_interpreters.adb version [c05be98464]. 



































































































































































































































































































































































































































































































































































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------------------------------------------------------------------------------
-- Copyright (c) 2013-2014, Natacha Porté                                   --
--                                                                          --
-- Permission to use, copy, modify, and distribute this software for any    --
-- purpose with or without fee is hereby granted, provided that the above   --
-- copyright notice and this permission notice appear in all copies.        --
--                                                                          --
-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES --
-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF         --
-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR  --
-- ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES   --
-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN    --
-- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF  --
-- OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.           --
------------------------------------------------------------------------------

package body Natools.S_Expressions.Dynamic_Interpreters is

   -----------------
   -- Interpreter --
   -----------------

   procedure Add_Command
     (Self : in out Interpreter;
      Name : in Atom;
      Cmd : in Command'Class) is
   begin
      Self.Commands.Insert (Name, Cmd);
      Self.Max_Length := Count'Max (Self.Max_Length, Name'Length);
   end Add_Command;


   procedure Add
     (Self : in out Interpreter;
      Name : in String;
      Cmd : in Command'Class) is
   begin
      Self.Add_Command (To_Atom (Name), Cmd);
   end Add;


   function Has_Command (Self : Interpreter; Name : Atom) return Boolean is
   begin
      return Self.Commands.Contains (Name);
   end Has_Command;


   function Is_Empty (Self : Interpreter) return Boolean is
   begin
      return Self.Commands.Is_Empty;
   end Is_Empty;


   procedure Set_Fallback
     (Self : in out Interpreter;
      Name : in Atom)
   is
      function Create return Atom;

      function Create return Atom is
      begin
         return Name;
      end Create;
   begin
      Self.Fallback_Name.Replace (Create'Access);
   end Set_Fallback;


   procedure Reset_Fallback (Self : in out Interpreter) is
   begin
      Self.Fallback_Name.Reset;
   end Reset_Fallback;


   not overriding procedure Execute
     (Self : in out Interpreter;
      Expression : in out Lockable.Descriptor'Class;
      State : in out Shared_State;
      Context : in Shared_Context)
   is
      Event : Events.Event := Expression.Current_Event;
      Lock_State : Lockable.Lock_State;
   begin
      loop
         case Event is
            when Events.Add_Atom =>
               Self.Execute (State, Context, Expression.Current_Atom);
            when Events.Open_List =>
               Expression.Lock (Lock_State);
               begin
                  Expression.Next (Event);
                  if Event = Events.Add_Atom then
                     Self.Execute (State, Context, Expression);
                  end if;
               exception
                  when others =>
                     Expression.Unlock (Lock_State, False);
                     raise;
               end;
               Expression.Unlock (Lock_State);
            when Events.Close_List | Events.End_Of_Input | Events.Error =>
               exit;
         end case;

         Expression.Next (Event);
      end loop;
   end Execute;


   not overriding procedure Execute
     (Self : in out Interpreter;
      Fallback : in out Command'Class;
      Expression : in out Lockable.Descriptor'Class;
      State : in out Shared_State;
      Context : in Shared_Context)
   is
      procedure Dispatch (Process : not null access procedure
                            (Name : in Atom; Cmd : in out Command'Class));
      procedure Process_Atom (Name : in Atom; Cmd : in out Command'Class);
      procedure Process_Exp (Name : in Atom; Cmd : in out Command'Class);

      procedure Dispatch (Process : not null access procedure
                            (Name : in Atom; Cmd : in out Command'Class))
      is
         procedure Process_Fallback (Name : in Atom);

         procedure Process_Fallback (Name : in Atom) is
         begin
            Process (Name, Fallback);
         end Process_Fallback;

         Buffer : Atom (1 .. Self.Max_Length);
         Length : Count;
         Cursor : Command_Maps.Cursor;
      begin
         Expression.Read_Atom (Buffer, Length);
         if Length > Self.Max_Length then
            Expression.Query_Atom (Process_Fallback'Access);
         else
            Cursor := Self.Commands.Find (Buffer (1 .. Length));
            if Command_Maps.Has_Element (Cursor) then
               Self.Commands.Update_Element (Cursor, Process);
            else
               Process (Buffer (1 .. Length), Fallback);
            end if;
         end if;
      end Dispatch;

      procedure Process_Atom (Name : in Atom; Cmd : in out Command'Class) is
      begin
         Cmd.Execute (State, Context, Name);
      end Process_Atom;

      procedure Process_Exp (Name : in Atom; Cmd : in out Command'Class) is
         pragma Unreferenced (Name);
      begin
         Cmd.Execute (State, Context, Expression);
      end Process_Exp;

      Event : Events.Event := Expression.Current_Event;
      Lock_State : Lockable.Lock_State;
   begin
      loop
         case Event is
            when Events.Add_Atom =>
               Dispatch (Process_Atom'Access);

            when Events.Open_List =>
               Expression.Lock (Lock_State);
               begin
                  Expression.Next (Event);
                  if Event = Events.Add_Atom then
                     Dispatch (Process_Exp'Access);
                  end if;
               exception
                  when others =>
                     Expression.Unlock (Lock_State, False);
                     raise;
               end;
               Expression.Unlock (Lock_State);

            when Events.Close_List | Events.End_Of_Input | Events.Error =>
               exit;
         end case;

         Expression.Next (Event);
      end loop;
   end Execute;


   overriding procedure Execute
     (Self : in out Interpreter;
      State : in out Shared_State;
      Context : in Shared_Context;
      Name : in Atom)
   is
      procedure Process_Atom (Key : in Atom; Cmd : in out Command'Class);

      procedure Process_Atom (Key : in Atom; Cmd : in out Command'Class) is
         pragma Unreferenced (Key);
      begin
         Cmd.Execute (State, Context, Name);
      end Process_Atom;

      Cursor : Command_Maps.Cursor;
   begin
      if Name'Length <= Self.Max_Length then
         Cursor := Self.Commands.Find (Name);
         if Command_Maps.Has_Element (Cursor) then
            Self.Commands.Update_Element (Cursor, Process_Atom'Access);
            return;
         end if;
      end if;

      if not Self.Fallback_Name.Is_Empty then
         Cursor := Self.Commands.Find (Self.Fallback_Name.Query.Data.all);
         if Command_Maps.Has_Element (Cursor) then
            Self.Commands.Update_Element (Cursor, Process_Atom'Access);
            return;
         end if;
      end if;

      raise Command_Not_Found
        with "Unknown command """ & To_String (Name) & '"';
   end Execute;


   overriding procedure Execute
     (Self : in out Interpreter;
      State : in out Shared_State;
      Context : in Shared_Context;
      Cmd : in out Lockable.Descriptor'Class)
   is
      procedure Process_Exp (Name : in Atom; Actual : in out Command'Class);

      procedure Process_Exp (Name : in Atom; Actual : in out Command'Class) is
         pragma Unreferenced (Name);
      begin
         Actual.Execute (State, Context, Cmd);
      end Process_Exp;

      Buffer : Atom (1 .. Self.Max_Length);
      Length : Count;
      Cursor : Command_Maps.Cursor;
   begin
      if Cmd.Current_Event /= Events.Add_Atom then
         return;
      end if;

      Cmd.Read_Atom (Buffer, Length);

      if Length <= Self.Max_Length then
         Cursor := Self.Commands.Find (Buffer (1 .. Length));
         if Command_Maps.Has_Element (Cursor) then
            Self.Commands.Update_Element (Cursor, Process_Exp'Access);
            return;
         end if;
      end if;

      if not Self.Fallback_Name.Is_Empty then
         Cursor := Self.Commands.Find (Self.Fallback_Name.Query.Data.all);
         if Command_Maps.Has_Element (Cursor) then
            Self.Commands.Update_Element (Cursor, Process_Exp'Access);
            return;
         end if;
      end if;

      raise Command_Not_Found
        with "Unknown command """ & To_String (Cmd.Current_Atom) & '"';
   end Execute;

end Natools.S_Expressions.Dynamic_Interpreters;

Added src/natools-s_expressions-dynamic_interpreters.ads version [39f192a56d]. 











































































































































































































































































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------------------------------------------------------------------------------
-- Copyright (c) 2013-2014, Natacha Porté                                   --
--                                                                          --
-- Permission to use, copy, modify, and distribute this software for any    --
-- purpose with or without fee is hereby granted, provided that the above   --
-- copyright notice and this permission notice appear in all copies.        --
--                                                                          --
-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES --
-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF         --
-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR  --
-- ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES   --
-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN    --
-- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF  --
-- OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.           --
------------------------------------------------------------------------------

------------------------------------------------------------------------------
-- Natools.S_Expressions.Dynamic_Interpreters provides an implemntation of  --
-- a dispatching command interpreter. The base list of a given S-expression --
-- is considered as list of command, either argumentless (atoms) or with a  --
-- S-expression argument (sublist). Sublists that don't start with an atom  --
-- are silently ignored and can be used as comments.                        --
--                                                                          --
-- Formal types represent common objets for all the command, Shared_State   --
-- begin read/write while Shared_Context is read-only.                      --
------------------------------------------------------------------------------

with Natools.S_Expressions.Lockable;

private with Ada.Containers.Indefinite_Ordered_Maps;
private with Natools.S_Expressions.Atom_Refs;

generic
   type Shared_State (<>) is limited private;
   type Shared_Context (<>) is limited private;

package Natools.S_Expressions.Dynamic_Interpreters is
   pragma Preelaborate (Dynamic_Interpreters);

   Command_Not_Found : exception;


   type Command is interface;

   procedure Execute
     (Self : in out Command;
      State : in out Shared_State;
      Context : in Shared_Context;
      Name : in Atom)
     is null;
      --  Execute a single argumentless command

   procedure Execute
     (Self : in out Command;
      State : in out Shared_State;
      Context : in Shared_Context;
      Cmd : in out Lockable.Descriptor'Class)
     is null;
      --  Execute a single command with arguments


   type Null_Command is new Command with null record;

   Do_Nothing : Null_Command := Null_Command'(null record);


   type Interpreter is new Command with private;

   procedure Add_Command
     (Self : in out Interpreter;
      Name : in Atom;
      Cmd : in Command'Class);

   procedure Add
     (Self : in out Interpreter;
      Name : in String;
      Cmd : in Command'Class);

   function Has_Command (Self : Interpreter; Name : Atom) return Boolean;

   function Is_Empty (Self : Interpreter) return Boolean;

   procedure Set_Fallback
     (Self : in out Interpreter;
      Name : in Atom);

   procedure Reset_Fallback (Self : in out Interpreter);

   not overriding procedure Execute
     (Self : in out Interpreter;
      Expression : in out Lockable.Descriptor'Class;
      State : in out Shared_State;
      Context : in Shared_Context);
      --  Execute an expression, raising Command_Not_Found on unknown commands

   not overriding procedure Execute
     (Self : in out Interpreter;
      Fallback : in out Command'Class;
      Expression : in out Lockable.Descriptor'Class;
      State : in out Shared_State;
      Context : in Shared_Context);
      --  Execute an expression with temporary fallback for unknown commands

   overriding procedure Execute
     (Self : in out Interpreter;
      State : in out Shared_State;
      Context : in Shared_Context;
      Name : in Atom);
      --  Execute a single argumentless command

   overriding procedure Execute
     (Self : in out Interpreter;
      State : in out Shared_State;
      Context : in Shared_Context;
      Cmd : in out Lockable.Descriptor'Class);
      --  Execute a single command with arguments


private

   type Exception_Command is new Command with null record;

   package Command_Maps is new Ada.Containers.Indefinite_Ordered_Maps
     (Atom, Command'Class, Less_Than);

   type Interpreter is new Command with record
      Commands : Command_Maps.Map;
      Max_Length : Count := 0;
      Fallback_Name : Atom_Refs.Reference;
   end record;

end Natools.S_Expressions.Dynamic_Interpreters;

Added tests/natools-s_expressions-dynamic_interpreter_tests.adb version [e5de2d8275]. 

































































































































































































































































































































































































































































































































































































































































































































































































































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------------------------------------------------------------------------------
-- Copyright (c) 2014, Natacha Porté                                        --
--                                                                          --
-- Permission to use, copy, modify, and distribute this software for any    --
-- purpose with or without fee is hereby granted, provided that the above   --
-- copyright notice and this permission notice appear in all copies.        --
--                                                                          --
-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES --
-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF         --
-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR  --
-- ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES   --
-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN    --
-- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF  --
-- OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.           --
------------------------------------------------------------------------------

with Natools.S_Expressions.Caches;
with Natools.S_Expressions.Test_Tools;

package body Natools.S_Expressions.Dynamic_Interpreter_Tests is

   function Test_Interpreter return Test_Interpreters.Interpreter;

   function Invalid_Commands return Caches.Reference;


   ------------------------
   -- Helper Subprograms --
   ------------------------

   function Invalid_Commands return Caches.Reference is
      Cache : Caches.Reference;
      Short : constant Atom := To_Atom ("not-cmd");
      Long : constant Atom := To_Atom ("not-a-command");
   begin
      Cache.Append_Atom (Short);
      Cache.Open_List;
      Cache.Append_Atom (Short);
      Cache.Append_Atom (To_Atom ("arg"));
      Cache.Close_List;
      Cache.Append_Atom (Long);
      Cache.Open_List;
      Cache.Append_Atom (Long);
      Cache.Open_List;
      Cache.Close_List;
      Cache.Close_List;
      return Cache;
   end Invalid_Commands;


   function Test_Interpreter return Test_Interpreters.Interpreter is
      Template : Recorder;
   begin
      return Inter : Test_Interpreters.Interpreter do
         Inter.Add_Command (To_Atom ("cmd"), Template);
         Inter.Add_Command (To_Atom ("command"), Template);
      end return;
   end Test_Interpreter;



   ----------------------
   -- Recorder Command --
   ----------------------

   overriding procedure Execute
     (Self : in out Recorder;
      State : in out Printers.Printer'Class;
      Context : in Boolean;
      Name : in Atom)
   is
      pragma Unreferenced (Self);
   begin
      if Context then
         State.Append_Atom (Name);
      end if;
   end Execute;


   overriding procedure Execute
     (Self : in out Recorder;
      State : in out Printers.Printer'Class;
      Context : in Boolean;
      Cmd : in out Lockable.Descriptor'Class)
   is
      pragma Unreferenced (Self);
   begin
      if not Context then
         return;
      end if;

      declare
         Buffer : aliased Test_Tools.Memory_Stream;
         Serializer : Printers.Canonical (Buffer'Access);
      begin
         Printers.Transfer (Cmd, Serializer);
         State.Open_List;
         State.Append_Atom (Buffer.Get_Data);
         State.Close_List;
      end;
   end Execute;



   --------------------
   -- Raiser Command --
   --------------------

   overriding procedure Execute
     (Self : in out Raiser;
      State : in out Printers.Printer'Class;
      Context : in Boolean;
      Name : in Atom)
   is
      pragma Unreferenced (Self, State, Context, Name);
   begin
      raise Special_Exception;
   end Execute;


   overriding procedure Execute
     (Self : in out Raiser;
      State : in out Printers.Printer'Class;
      Context : in Boolean;
      Cmd : in out Lockable.Descriptor'Class)
   is
      pragma Unreferenced (Self, State, Context, Cmd);
   begin
      raise Special_Exception;
   end Execute;



   -------------------------
   -- Complete Test Suite --
   -------------------------

   procedure All_Tests (Report : in out NT.Reporter'Class) is
   begin
      Test_Basic_Usage (Report);
      Test_Unknown_Commands (Report);
      Test_Premanent_Fallback (Report);
      Test_Local_Fallback (Report);
      Test_Exception_Fallback (Report);
      Test_Inspection (Report);
   end All_Tests;



   ----------------------
   -- Individual Tests --
   ----------------------

   procedure Test_Basic_Usage (Report : in out NT.Reporter'Class) is
      Test : NT.Test := Report.Item ("Basic usage");
   begin
      declare
         Inter : Test_Interpreters.Interpreter := Test_Interpreter;
         Buffer : aliased Test_Tools.Memory_Stream;
         Printer : Printers.Canonical (Buffer'Access);
         Input : Caches.Reference;
         Cursor : Caches.Cursor;
      begin
         Input.Append_Atom (To_Atom ("cmd"));
         Input.Open_List;
         Input.Append_Atom (To_Atom ("cmd"));
         Input.Append_Atom (To_Atom ("foo"));
         Input.Append_Atom (To_Atom ("bar"));
         Input.Close_List;
         Input.Append_Atom (To_Atom ("command"));
         Input.Open_List;
         Input.Open_List;
         Input.Append_Atom (To_Atom ("comment"));
         Input.Close_List;
         Input.Close_List;
         Input.Open_List;
         Input.Append_Atom (To_Atom ("command"));
         Input.Open_List;
         Input.Close_List;
         Input.Close_List;

         Cursor := Input.First;

         Buffer.Set_Expected (To_Atom
           ("3:cmd(15:3:cmd3:foo3:bar)7:command(11:7:command())"));

         Inter.Execute (Cursor, Printer, True);
         Buffer.Check_Stream (Test);
      end;
   exception
      when Error : others => Test.Report_Exception (Error);
   end Test_Basic_Usage;


   procedure Test_Exception_Fallback (Report : in out NT.Reporter'Class) is
      Test : NT.Test := Report.Item ("Local fallback raising an exception");
   begin
      declare
         Inter : Test_Interpreters.Interpreter := Test_Interpreter;
         Buffer : aliased Test_Tools.Memory_Stream;
         Printer : Printers.Canonical (Buffer'Access);
         Input : Caches.Reference;
         Cursor : Caches.Cursor;
         Fallback : Raiser;
      begin
         Input.Append_Atom (To_Atom ("cmd"));
         Input.Open_List;
         Input.Append_Atom (To_Atom ("unknown"));
         Input.Append_Atom (To_Atom ("argument"));
         Input.Close_List;
         Input.Close_List;
         Input.Open_List;
         Input.Append_Atom (To_Atom ("command"));
         Input.Close_List;
         Cursor := Input.First;

         Buffer.Set_Expected (To_Atom ("3:cmd"));

         begin
            Inter.Execute (Fallback, Cursor, Printer, True);
            Test.Fail ("No exception raised");
         exception
            when Special_Exception => null;
            when Error : others =>
               Test.Fail ("Wrong exception raised:");
               Test.Report_Exception (Error, NT.Fail);
         end;

         Buffer.Check_Stream (Test);

         Test_Tools.Next_And_Check (Test, Cursor, To_Atom ("argument"), 1);
         Test_Tools.Next_And_Check (Test, Cursor, Events.Close_List, 0);
         Test_Tools.Next_And_Check (Test, Cursor, Events.Open_List, 1);
         Test_Tools.Next_And_Check (Test, Cursor, To_Atom ("command"), 1);
         Test_Tools.Next_And_Check (Test, Cursor, Events.Close_List, 0);
         Test_Tools.Next_And_Check (Test, Cursor, Events.End_Of_Input, 0);
      end;
   exception
      when Error : others => Test.Report_Exception (Error);
   end Test_Exception_Fallback;


   procedure Test_Inspection (Report : in out NT.Reporter'Class) is
      Test : NT.Test := Report.Item ("Inspection");
   begin
      declare
         Inter : Test_Interpreters.Interpreter;
      begin
         if not Inter.Is_Empty then
            Test.Fail ("Default interpreter is not empty");
         end if;

         if Inter.Has_Command (To_Atom ("cmd")) then
            Test.Fail ("Default interpreter has command ""cmd""");
         end if;

         Inter := Test_Interpreter;

         if Inter.Is_Empty then
            Test.Fail ("Test interpreter is empty");
         end if;

         if not Inter.Has_Command (To_Atom ("cmd")) then
            Test.Fail ("Test interpreter has not command ""cmd""");
         end if;

         if Inter.Has_Command (To_Atom ("not-a-cmd")) then
            Test.Fail ("Test interpreter has command ""not-a-cmd""");
         end if;

      end;
   exception
      when Error : others => Test.Report_Exception (Error);
   end Test_Inspection;


   procedure Test_Local_Fallback (Report : in out NT.Reporter'Class) is
      Test : NT.Test := Report.Item ("Local fallback");
   begin
      declare
         Inter : Test_Interpreters.Interpreter := Test_Interpreter;
         Buffer : aliased Test_Tools.Memory_Stream;
         Printer : Printers.Canonical (Buffer'Access);
         Input : Caches.Reference := Invalid_Commands;
         Cursor : Caches.Cursor := Input.First;
         Fallback : Recorder;
      begin
         Input.Append_Atom (To_Atom ("cmd"));
         Buffer.Set_Expected (To_Atom
           ("7:not-cmd(14:7:not-cmd3:arg)13:not-a-command"
            & "(18:13:not-a-command())3:cmd"));

         Inter.Execute (Fallback, Cursor, Printer, True);

         Buffer.Check_Stream (Test);
      end;
   exception
      when Error : others => Test.Report_Exception (Error);
   end Test_Local_Fallback;


   procedure Test_Premanent_Fallback (Report : in out NT.Reporter'Class) is
      Test : NT.Test := Report.Item ("Permanent fallback");
   begin
      declare
         Inter : Test_Interpreters.Interpreter := Test_Interpreter;
         Buffer : aliased Test_Tools.Memory_Stream;
         Printer : Printers.Canonical (Buffer'Access);
         Input : constant Caches.Reference := Invalid_Commands;
         Cursor : Caches.Cursor := Input.First;
      begin
         Buffer.Set_Expected (To_Atom
           ("7:not-cmd(14:7:not-cmd3:arg)13:not-a-command"
            & "(18:13:not-a-command())"));

         Inter.Set_Fallback (To_Atom ("cmd"));
         Inter.Execute (Cursor, Printer, True);

         Buffer.Check_Stream (Test);
      end;
   exception
      when Error : others => Test.Report_Exception (Error);
   end Test_Premanent_Fallback;


   procedure Test_Unknown_Commands (Report : in out NT.Reporter'Class) is
      Test : NT.Test := Report.Item ("Unknown commands");
   begin
      declare
         Inter : Test_Interpreters.Interpreter := Test_Interpreter;
         Buffer : aliased Test_Tools.Memory_Stream;
         Printer : Printers.Canonical (Buffer'Access);
         Input : constant Caches.Reference := Invalid_Commands;
         Cursor : Caches.Cursor := Input.First;
      begin
         Inter.Set_Fallback (To_Atom ("cmd"));
         Inter.Reset_Fallback;

         begin
            Inter.Execute (Cursor, Printer, True);
            Test.Fail ("No exception raised after not-cmd");
         exception
            when Test_Interpreters.Command_Not_Found => null;
            when Error : others =>
               Test.Fail ("Unexpected exception raised after not-cmd");
               Test.Report_Exception (Error, NT.Fail);
         end;

         Test_Tools.Next_And_Check (Test, Cursor, Events.Open_List, 1);

         begin
            Inter.Execute (Cursor, Printer, True);
            Test.Fail ("No exception raised after (not-cmd)");
         exception
            when Test_Interpreters.Command_Not_Found => null;
            when Error : others =>
               Test.Fail ("Unexpected exception raised after (not-cmd)");
               Test.Report_Exception (Error, NT.Fail);
         end;

         Test_Tools.Next_And_Check (Test, Cursor, To_Atom ("arg"), 1);
         Test_Tools.Next_And_Check (Test, Cursor, Events.Close_List, 0);
         Test_Tools.Next_And_Check
           (Test, Cursor, To_Atom ("not-a-command"), 0);

         begin
            Inter.Execute (Cursor, Printer, True);
            Test.Fail ("No exception raised after not-a-command");
         exception
            when Test_Interpreters.Command_Not_Found => null;
            when Error : others =>
               Test.Fail ("Unexpected exception raised after not-a-command");
               Test.Report_Exception (Error, NT.Fail);
         end;

         Test_Tools.Next_And_Check (Test, Cursor, Events.Open_List, 1);

         begin
            Inter.Execute (Cursor, Printer, True);
            Test.Fail ("No exception raised after not-a-command");
         exception
            when Test_Interpreters.Command_Not_Found => null;
            when Error : others =>
               Test.Fail ("Unexpected exception raised after not-a-command");
               Test.Report_Exception (Error, NT.Fail);
         end;

         Test_Tools.Next_And_Check (Test, Cursor, Events.Open_List, 2);
         Test_Tools.Next_And_Check (Test, Cursor, Events.Close_List, 1);
         Test_Tools.Next_And_Check (Test, Cursor, Events.Close_List, 0);
         Test_Tools.Next_And_Check (Test, Cursor, Events.End_Of_Input, 0);

         Buffer.Check_Stream (Test);
      end;
   exception
      when Error : others => Test.Report_Exception (Error);
   end Test_Unknown_Commands;

end Natools.S_Expressions.Dynamic_Interpreter_Tests;

Added tests/natools-s_expressions-dynamic_interpreter_tests.ads version [b1da921500]. 





























































































































































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------------------------------------------------------------------------------
-- Copyright (c) 2014, Natacha Porté                                        --
--                                                                          --
-- Permission to use, copy, modify, and distribute this software for any    --
-- purpose with or without fee is hereby granted, provided that the above   --
-- copyright notice and this permission notice appear in all copies.        --
--                                                                          --
-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES --
-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF         --
-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR  --
-- ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES   --
-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN    --
-- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF  --
-- OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.           --
------------------------------------------------------------------------------

------------------------------------------------------------------------------
-- Natools.S_Expressions.Dynamic_Interpreter_Tests provides a test suite    --
-- for the dyamic version of S-expression interpreters.                     --
------------------------------------------------------------------------------

with Natools.Tests;

private with Natools.S_Expressions.Dynamic_Interpreters;
private with Natools.S_Expressions.Lockable;
private with Natools.S_Expressions.Printers;

package Natools.S_Expressions.Dynamic_Interpreter_Tests is
   pragma Preelaborate (Dynamic_Interpreter_Tests);

   package NT renames Natools.Tests;

   procedure All_Tests (Report : in out NT.Reporter'Class);

   procedure Test_Basic_Usage (Report : in out NT.Reporter'Class);
   procedure Test_Exception_Fallback (Report : in out NT.Reporter'Class);
   procedure Test_Inspection (Report : in out NT.Reporter'Class);
   procedure Test_Local_Fallback (Report : in out NT.Reporter'Class);
   procedure Test_Premanent_Fallback (Report : in out NT.Reporter'Class);
   procedure Test_Unknown_Commands (Report : in out NT.Reporter'Class);

private

   package Test_Interpreters is new Natools.S_Expressions.Dynamic_Interpreters
     (Printers.Printer'Class, Boolean);

   type Recorder is new Test_Interpreters.Command with null record;

   overriding procedure Execute
     (Self : in out Recorder;
      State : in out Printers.Printer'Class;
      Context : in Boolean;
      Name : in Atom);

   overriding procedure Execute
     (Self : in out Recorder;
      State : in out Printers.Printer'Class;
      Context : in Boolean;
      Cmd : in out Lockable.Descriptor'Class);

   Special_Exception : exception;

   type Raiser is new Test_Interpreters.Command with null record;

   overriding procedure Execute
     (Self : in out Raiser;
      State : in out Printers.Printer'Class;
      Context : in Boolean;
      Name : in Atom);

   overriding procedure Execute
     (Self : in out Raiser;
      State : in out Printers.Printer'Class;
      Context : in Boolean;
      Cmd : in out Lockable.Descriptor'Class);

end Natools.S_Expressions.Dynamic_Interpreter_Tests;

Modified tests/test_all.adb from [cf090ebe77] to [f858f83fe4].

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with Ada.Text_IO;
with Natools.Chunked_Strings.Tests;
with Natools.Getopt_Long_Tests;
with Natools.HMAC_Tests;
with Natools.Reference_Tests;
with Natools.S_Expressions.Atom_Buffers.Tests;
with Natools.S_Expressions.Cache_Tests;

with Natools.S_Expressions.Encodings.Tests;
with Natools.S_Expressions.Interpreter_Tests;
with Natools.S_Expressions.Lockable.Tests;
with Natools.S_Expressions.Parsers.Tests;
with Natools.S_Expressions.Printers.Tests;
with Natools.S_Expressions.Printers.Pretty.Tests;
with Natools.S_Expressions.Printers.Pretty.Config.Tests;








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with Ada.Text_IO;
with Natools.Chunked_Strings.Tests;
with Natools.Getopt_Long_Tests;
with Natools.HMAC_Tests;
with Natools.Reference_Tests;
with Natools.S_Expressions.Atom_Buffers.Tests;
with Natools.S_Expressions.Cache_Tests;
with Natools.S_Expressions.Dynamic_Interpreter_Tests;
with Natools.S_Expressions.Encodings.Tests;
with Natools.S_Expressions.Interpreter_Tests;
with Natools.S_Expressions.Lockable.Tests;
with Natools.S_Expressions.Parsers.Tests;
with Natools.S_Expressions.Printers.Tests;
with Natools.S_Expressions.Printers.Pretty.Tests;
with Natools.S_Expressions.Printers.Pretty.Config.Tests;
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   Report.Section ("S_Expressions.Atom_Buffers");
   Natools.S_Expressions.Atom_Buffers.Tests.All_Tests (Report);
   Report.End_Section;

   Report.Section ("S_Expressions.Caches");
   Natools.S_Expressions.Cache_Tests.All_Tests (Report);
   Report.End_Section;





   Report.Section ("S_Expressions.Encodings");
   Natools.S_Expressions.Encodings.Tests.All_Tests (Report);
   Report.End_Section;

   Report.Section ("S_Expressions.Interpreters");
   Natools.S_Expressions.Interpreter_Tests.All_Tests (Report);








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   Report.Section ("S_Expressions.Atom_Buffers");
   Natools.S_Expressions.Atom_Buffers.Tests.All_Tests (Report);
   Report.End_Section;

   Report.Section ("S_Expressions.Caches");
   Natools.S_Expressions.Cache_Tests.All_Tests (Report);
   Report.End_Section;

   Report.Section ("S_Expressions.Dynamic_Interpreters");
   Natools.S_Expressions.Dynamic_Interpreter_Tests.All_Tests (Report);
   Report.End_Section;

   Report.Section ("S_Expressions.Encodings");
   Natools.S_Expressions.Encodings.Tests.All_Tests (Report);
   Report.End_Section;

   Report.Section ("S_Expressions.Interpreters");
   Natools.S_Expressions.Interpreter_Tests.All_Tests (Report);
︙︙

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