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420 | ------------------------------------------------------------------------------
-- G N A T C O L L --
-- --
-- Copyright (C) 2003-2017, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify it --
-- under terms of the GNU General Public License as published by the Free --
-- Software Foundation; either version 3, or (at your option) any later --
-- version. This library is distributed in the hope that it will be useful, --
-- but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN- --
-- TABILITY or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
------------------------------------------------------------------------------
-- This package contains the implementation for a simple scripting language
pragma Ada_2012;
private with Ada.Containers.Indefinite_Doubly_Linked_Lists;
private with Ada.Containers.Indefinite_Hashed_Maps;
private with Ada.Strings.Hash;
private with GNAT.Strings;
package GNATCOLL.Scripts.Shell is
Shell_Name : constant String := "shell";
type Shell_Scripting_Record is new Scripting_Language_Record with private;
type Shell_Scripting is access all Shell_Scripting_Record'Class;
type Shell_Callback_Data is new Callback_Data with private;
type Shell_Class_Instance_Record is new Class_Instance_Record with private;
type Shell_Subprogram_Record is new Subprogram_Record with private;
type Shell_Subprogram is access all Shell_Subprogram_Record'Class;
-- This types are declared in the spec rather than in the body, so that
-- their subprograms can be overridden again. For instance, GPS uses that
-- to make a subprogram_type be a GPS action rather than a simple shell
-- command.
procedure Register_Shell_Scripting
(Repo : Scripts_Repository;
Script : Shell_Scripting := null);
-- Register the scripting language.
-- Script can be specified if you want to specialize some aspects of the
-- scripting language
procedure Initialize
(Data : in out Shell_Callback_Data'Class;
Script : access Shell_Scripting_Record'Class);
-- Initialize Data to pass Arguments_Count to a callback
procedure List_Commands
(Script : access Shell_Scripting_Record'Class;
Console : Virtual_Console := null);
-- Print the list of all commands on Console. By default, print on the
-- default console for Script
procedure Initialize
(Subprogram : in out Shell_Subprogram_Record'Class;
Script : access Scripting_Language_Record'Class;
Command : String);
-- Initialize Subprogram so that it will execute Command
function Get_Command
(Subprogram : access Shell_Subprogram_Record) return String;
-- Return the command that will be executed by Subprogram
function Get_Args
(Data : Shell_Callback_Data) return GNAT.OS_Lib.Argument_List;
-- Return the list of arguments specified by Data. The returned value must
-- never be freed by the caller
procedure Set_Prompt
(Script : access Shell_Scripting_Record'Class;
Prompt : String);
-- The prompt to use for consoles associated with this language
private
Num_Previous_Returns : constant := 9;
-- Number of parameters %1, %2,... which are used to memorize the result of
-- previous commands.
type Shell_Class_Instance_Record is new Class_Instance_Record with record
Class : Class_Type;
Props : aliased User_Data_List;
end record;
type Shell_Class_Instance is access all Shell_Class_Instance_Record'Class;
overriding function Print_Refcount
(Instance : access Shell_Class_Instance_Record) return String;
overriding function Is_Subclass
(Instance : access Shell_Class_Instance_Record;
Base : String) return Boolean;
overriding procedure Set_Property
(Instance : access Shell_Class_Instance_Record;
Name : String; Value : Integer);
overriding procedure Set_Property
(Instance : access Shell_Class_Instance_Record;
Name : String; Value : Float);
overriding procedure Set_Property
(Instance : access Shell_Class_Instance_Record;
Name : String; Value : Boolean);
overriding procedure Set_Property
(Instance : access Shell_Class_Instance_Record;
Name : String; Value : String);
overriding function Get_Method
(Instance : access Shell_Class_Instance_Record;
Name : String) return Subprogram_Type;
overriding function Get_User_Data
(Self : not null access Shell_Class_Instance_Record)
return access User_Data_List;
-- See doc from inherited subprogram
package Instances_List is new Ada.Containers.Indefinite_Doubly_Linked_Lists
(Class_Instance);
-- ??? Would be faster to use a hash-table...
-------------------------
-- Command_Information --
-------------------------
type Command_Information is record
Command : GNAT.Strings.String_Access;
Cmd : Command_Descr_Access;
end record;
type Command_Information_Access is access Command_Information;
-- Description for each of the registered commands.
-- Command is the name that must be typed by the user in the console.
-- Short_Command is the name under which the command was registered. It is
-- the same as Command, except when the command is a method of a class. In
-- this case, Command is equal to "Class.Short_Command"
-- The command was set as a constructor if Short_Command is
-- Constructor_Method.
procedure Free (Com : in out Command_Information_Access);
-- Free memory associated with Com
package Command_Hash is new Ada.Containers.Indefinite_Hashed_Maps
(String, Command_Information_Access, Ada.Strings.Hash, "=");
type Shell_Scripting_Record is new Scripting_Language_Record with record
Repo : Scripts_Repository;
Finalized : Boolean := False;
Blocked : Boolean := False;
Instances : Instances_List.List;
-- All the instances that were created
Commands_List : Command_Hash.Map;
-- The list of all registered commands
Returns : GNAT.Strings.String_List (1 .. Num_Previous_Returns);
-- The result of the Num_Previous_Returns previous commands
Prompt : GNAT.Strings.String_Access := new String'("[Shell]>");
-- Prompt to use in consoles for this language
end record;
overriding function Command_Line_Treatment
(Script : access Shell_Scripting_Record) return Command_Line_Mode;
overriding procedure Destroy (Script : access Shell_Scripting_Record);
overriding procedure Register_Command
(Script : access Shell_Scripting_Record;
Command : Command_Descr_Access);
overriding procedure Register_Property
(Script : access Shell_Scripting_Record;
Prop : Property_Descr_Access);
overriding procedure Register_Class
(Script : access Shell_Scripting_Record;
Name : String;
Base : Class_Type := No_Class;
Module : Module_Type := Default_Module);
overriding procedure Block_Commands
(Script : access Shell_Scripting_Record; Block : Boolean);
overriding procedure Execute_Command
(Script : access Shell_Scripting_Record;
CL : Arg_List;
Console : Virtual_Console := null;
Hide_Output : Boolean := False;
Show_Command : Boolean := True;
Errors : out Boolean);
overriding function Execute_Command
(Script : access Shell_Scripting_Record;
CL : Arg_List;
Console : Virtual_Console := null;
Hide_Output : Boolean := False;
Show_Command : Boolean := True;
Errors : access Boolean) return String;
overriding function Execute_Command
(Script : access Shell_Scripting_Record;
CL : Arg_List;
Console : Virtual_Console := null;
Hide_Output : Boolean := False;
Errors : access Boolean) return Boolean;
overriding function Execute_Command
(Script : access Shell_Scripting_Record;
Command : String;
Args : Callback_Data'Class) return Boolean;
overriding function Execute_Command_With_Args
(Script : access Shell_Scripting_Record;
CL : Arg_List) return String;
overriding procedure Execute_File
(Script : access Shell_Scripting_Record;
Filename : String;
Console : Virtual_Console := null;
Hide_Output : Boolean := False;
Show_Command : Boolean := True;
Errors : out Boolean);
overriding function Get_Name
(Script : access Shell_Scripting_Record) return String;
overriding function Get_Repository
(Script : access Shell_Scripting_Record)
return Scripts_Repository;
overriding function Current_Script
(Script : access Shell_Scripting_Record) return String;
overriding procedure Display_Prompt
(Script : access Shell_Scripting_Record;
Console : Virtual_Console := null);
overriding function Get_Prompt
(Script : access Shell_Scripting_Record) return String;
overriding procedure Complete
(Script : access Shell_Scripting_Record;
Input : String;
Completions : out String_Lists.List);
overriding function New_Instance
(Script : access Shell_Scripting_Record; Class : Class_Type)
return Class_Instance;
overriding function New_List
(Script : access Shell_Scripting_Record;
Class : Class_Type := No_Class)
return List_Instance'Class;
-- See doc from inherited subprograms
type Shell_Callback_Data is new Callback_Data with record
Script : Shell_Scripting;
CL : Arg_List;
Return_Value : GNAT.Strings.String_Access;
Return_Dict : GNAT.Strings.String_Access;
Return_As_List : Boolean := False;
Return_As_Error : Boolean := False;
end record;
overriding function Clone
(Data : Shell_Callback_Data) return Callback_Data'Class;
overriding function Get_Script
(Data : Shell_Callback_Data) return Scripting_Language;
overriding function Number_Of_Arguments
(Data : Shell_Callback_Data) return Natural;
overriding procedure Name_Parameters
(Data : in out Shell_Callback_Data; Names : Cst_Argument_List);
overriding function Nth_Arg
(Data : Shell_Callback_Data; N : Positive) return String;
overriding function Nth_Arg
(Data : Shell_Callback_Data; N : Positive) return Unbounded_String;
overriding function Nth_Arg
(Data : Shell_Callback_Data; N : Positive) return Integer;
overriding function Nth_Arg
(Data : Shell_Callback_Data; N : Positive) return Float;
overriding function Nth_Arg
(Data : Shell_Callback_Data; N : Positive) return Boolean;
overriding function Nth_Arg
(Data : Shell_Callback_Data; N : Positive) return Subprogram_Type;
overriding function Nth_Arg
(Data : Shell_Callback_Data; N : Positive; Class : Class_Type;
Allow_Null : Boolean := False) return Class_Instance;
overriding function Nth_Arg
(Data : Shell_Callback_Data; N : Positive)
return List_Instance'Class;
overriding function Nth_Arg
(Data : Shell_Callback_Data; N : Positive)
return Dictionary_Instance'Class;
overriding function Nth_Arg
(Data : Shell_Callback_Data; N : Positive; Default : String)
return String;
overriding function Nth_Arg
(Data : Shell_Callback_Data; N : Positive; Default : Integer)
return Integer;
overriding function Nth_Arg
(Data : Shell_Callback_Data; N : Positive; Default : Float)
return Float;
overriding function Nth_Arg
(Data : Shell_Callback_Data; N : Positive; Default : Boolean)
return Boolean;
overriding function Nth_Arg
(Data : Shell_Callback_Data;
N : Positive;
Class : Class_Type := Any_Class;
Default : Class_Instance;
Allow_Null : Boolean := False) return Class_Instance;
overriding function Nth_Arg
(Data : Shell_Callback_Data;
N : Positive;
Default : Subprogram_Type) return Subprogram_Type;
overriding procedure Set_Error_Msg
(Data : in out Shell_Callback_Data; Msg : String);
overriding procedure Set_Return_Value_As_List
(Data : in out Shell_Callback_Data;
Size : Natural := 0;
Class : Class_Type := No_Class);
overriding procedure Set_Return_Value
(Data : in out Shell_Callback_Data; Value : Integer);
overriding procedure Set_Address_Return_Value
(Data : in out Shell_Callback_Data; Value : System.Address);
overriding procedure Set_Return_Value
(Data : in out Shell_Callback_Data; Value : Float);
overriding procedure Set_Return_Value
(Data : in out Shell_Callback_Data; Value : Boolean);
overriding procedure Set_Return_Value
(Data : in out Shell_Callback_Data; Value : String);
overriding procedure Set_Return_Value
(Data : in out Shell_Callback_Data; Value : Class_Instance);
overriding procedure Set_Return_Value
(Data : in out Shell_Callback_Data; Value : List_Instance);
overriding procedure Set_Return_Value_Key
(Data : in out Shell_Callback_Data;
Key : String;
Append : Boolean := False);
overriding procedure Set_Return_Value_Key
(Data : in out Shell_Callback_Data;
Key : Integer;
Append : Boolean := False);
overriding procedure Set_Return_Value_Key
(Data : in out Shell_Callback_Data;
Key : Class_Instance;
Append : Boolean := False);
overriding procedure Free (Data : in out Shell_Callback_Data);
overriding function Create
(Script : access Shell_Scripting_Record;
Arguments_Count : Natural) return Callback_Data'Class;
overriding procedure Set_Nth_Arg
(Data : in out Shell_Callback_Data; N : Positive; Value : String);
overriding procedure Set_Nth_Arg
(Data : in out Shell_Callback_Data; N : Positive; Value : Integer);
overriding procedure Set_Nth_Arg
(Data : in out Shell_Callback_Data; N : Positive; Value : Float);
overriding procedure Set_Nth_Arg
(Data : in out Shell_Callback_Data; N : Positive; Value : Boolean);
overriding procedure Set_Nth_Arg
(Data : in out Shell_Callback_Data;
N : Positive;
Value : Class_Instance);
overriding procedure Set_Nth_Arg
(Data : in out Shell_Callback_Data;
N : Positive;
Value : List_Instance);
overriding procedure Set_Nth_Arg
(Data : in out Shell_Callback_Data;
N : Positive;
Value : Subprogram_Type);
overriding procedure Execute_Command
(Args : in out Shell_Callback_Data;
Command : String;
Hide_Output : Boolean := True);
overriding function Return_Value
(Data : Shell_Callback_Data) return String;
overriding function Return_Value
(Data : Shell_Callback_Data) return Integer;
overriding function Return_Value
(Data : Shell_Callback_Data) return Float;
overriding function Return_Value
(Data : Shell_Callback_Data) return Boolean;
overriding function Return_Value
(Data : Shell_Callback_Data) return Class_Instance;
overriding function Return_Value
(Data : Shell_Callback_Data) return List_Instance'Class;
overriding procedure Execute_Expression
(Result : in out Shell_Callback_Data;
Expression : String;
Hide_Output : Boolean := True);
-- See doc from inherited subprogram
----------------------
-- Shell_Subprogram --
----------------------
type Shell_Subprogram_Record is new Subprogram_Record with record
Script : Scripting_Language;
Command : GNAT.Strings.String_Access;
end record;
-- subprograms in GPS shell are just GPS actions
overriding function Execute
(Subprogram : access Shell_Subprogram_Record;
Args : Callback_Data'Class;
Error : not null access Boolean) return Boolean;
overriding function Execute
(Subprogram : access Shell_Subprogram_Record;
Args : Callback_Data'Class;
Error : not null access Boolean) return String;
overriding function Execute
(Subprogram : access Shell_Subprogram_Record;
Args : Callback_Data'Class;
Error : not null access Boolean) return Class_Instance;
overriding function Execute
(Subprogram : access Shell_Subprogram_Record;
Args : Callback_Data'Class;
Error : not null access Boolean) return List_Instance'Class;
overriding function Execute
(Subprogram : access Shell_Subprogram_Record;
Args : Callback_Data'Class;
Error : not null access Boolean) return GNAT.Strings.String_List;
overriding function Execute
(Subprogram : access Shell_Subprogram_Record;
Args : Callback_Data'Class;
Error : not null access Boolean) return Any_Type;
overriding procedure Free (Subprogram : in out Shell_Subprogram_Record);
overriding function Get_Name
(Subprogram : access Shell_Subprogram_Record) return String;
overriding function Get_Script
(Subprogram : Shell_Subprogram_Record) return Scripting_Language;
-- See doc from inherited subprograms
end GNATCOLL.Scripts.Shell;
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