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|
------------------------------------------------------------------------------
-- --
-- GNAT2XML COMPONENTS --
-- --
-- G N A T 2 X M L . A D A _ T R E E S . G E N E R A T E _ F A C T O R Y --
-- --
-- B o d y --
-- --
-- Copyright (C) 2012-2016, AdaCore --
-- --
-- Gnat2xml 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 2, or (at your option) any later --
-- version. Gnat2xml is distributed in the hope that it will be useful, --
-- but WITHOUT ANY WARRANTY; without even the implied warranty of MER- --
-- CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General --
-- Public License for more details. You should have received a copy of the --
-- GNU General Public License distributed with GNAT; see file COPYING. If --
-- not, write to the Free Software Foundation, 59 Temple Place Suite 330, --
-- Boston, MA 02111-1307, USA. --
-- The gnat2xml tool was derived from the Avatox sources. --
------------------------------------------------------------------------------
pragma Ada_2012;
-- This program generates the package Ada_Trees.Factory, which contains
-- subtypes and constructors for each kind/class of tree, and getters and
-- setters for each query.
-- The code is placed in two files ada_trees-factory.ns and
-- ada_trees-factory.nb, which should be copied to .ads and .adb. This allows
-- to avoid the copy in case the files haven't changed, which avoids changing
-- the timestamps, which avoids unnecessary recompilations.
with Ada.Wide_Text_IO;
with ASIS_UL.Formatted_Output; use ASIS_UL.Formatted_Output;
with ASIS_UL.String_Utilities; use ASIS_UL.String_Utilities;
procedure Ada_Trees.Generate_Factory is
Factory_Spec, Factory_Body : Wide_Text_IO.File_Type;
function Subtype_Name (Class : Classes) return String;
function List_Component_Subtype_Name (Kind : Flat_List_Kinds) return String;
procedure Construct_Constructor (Kind : Opt_ASIS_Elems; Is_Body : Boolean);
procedure Construct_List_Constructor
(Kind : Flat_List_Kinds;
Is_Body : Boolean);
function Subtype_Name (Class : Classes) return String is
begin
if Class = Not_An_Element then
return "Nil_Element";
else
return Capitalize (Strip_Article (Class'Img)) &
(if Class in ASIS_Elems | Flat_List_Kinds then "_Tree" else "");
-- Some of the ASIS_Elems conflict with query names, so append
-- "_Tree" to those. ASIS_Elems and lists conflict with constructor
-- names. This also avoids conflict with reserved words.
end if;
end Subtype_Name;
function List_Component_Subtype_Name
(Kind : Flat_List_Kinds)
return String
is
begin
return Subtype_Name (List_Component_Type (Kind));
end List_Component_Subtype_Name;
procedure Construct_Constructor
(Kind : Opt_ASIS_Elems;
Is_Body : Boolean)
is
Qs : Query_List renames Appropriate_Queries (Kind).all;
First_Time : Boolean := True;
begin
Put ("function \1", Constructor_Name (Kind));
Put ("\i\n(");
case Kind is
when A_Compilation_Unit | Def_Names =>
Put ("Def_Name : Name_Id;\n");
case Kind is
when A_Compilation_Unit =>
Put ("Unit_Kind : Unit_Kinds;\n");
Put ("Unit_Class : Unit_Classes;\n");
Put ("Unit_Origin : Unit_Origins;\n");
Put ("Unit_Full_Name : Name_Id;\n");
Put ("Source_File : Name_Id;\n");
when Def_Names =>
Put ("Def : Name_Id;\n");
Put ("Decl_Type : Name_Id;\n");
when others =>
null;
end case;
when Flat_Expression_Kinds =>
Put ("Expr_Type : Name_Id;\n");
case Kind is
when Usage_Names =>
Put ("Ref_Name : Name_Id;\n");
Put ("Ref : Name_Id;\n");
when An_Integer_Literal | A_Real_Literal | A_String_Literal =>
Put ("Lit_Val : Name_Id;\n");
when others =>
null;
end case;
when Flat_Pragma_Kinds =>
Put ("Pragma_Name : Name_Id;\n");
when A_Parameter_Specification | A_Formal_Object_Declaration =>
Put ("Mode : Asis.Mode_Kinds;\n");
when A_Comment =>
Put ("Text : Name_Id;\n");
when others =>
null;
end case;
for Q of Qs loop
Put ("\1 : \2;\n", Q_Name (Q), Subtype_Name (Query_Result_Types (Q)));
end loop;
Put ("Sloc : Asis.Text.Span := Asis.Text.Nil_Span)\n");
Put ("return \1\o", Subtype_Name (Kind));
if not Is_Body then
Put (";\n");
else
Put (" is\n");
Put ("begin\n\i");
Put
("return Result : constant \1 := Make (\2,\n\i",
Subtype_Name (Kind),
Capitalize (Kind'Img));
Put ("(");
if Qs'Length = 0 then
Put ("1 .. 0 => <>");
else
if Qs'Length = 1 then
Put ("1 => ");
end if;
for Q of Qs loop
if First_Time then
First_Time := False;
else
Put (", ");
end if;
Put ("(Queries.\1, \1\n)", Q_Name (Q));
-- We need "Queries.", because the parameter name hides the
-- Query name.
end loop;
end if;
Put ("),\n");
Put ("Sloc)\n\odo\n\i");
case Kind is
when A_Compilation_Unit | Def_Names =>
Put ("Result.Def_Name := Def_Name;\n");
case Kind is
when A_Compilation_Unit =>
Put ("Result.Unit_Kind := Unit_Kind;\n");
Put ("Result.Unit_Class := Unit_Class;\n");
Put ("Result.Unit_Origin := Unit_Origin;\n");
Put ("Result.Unit_Full_Name := Unit_Full_Name;\n");
Put ("Result.Source_File := Source_File;\n");
when Def_Names =>
Put ("Result.Def := Def;\n");
Put ("Result.Decl_Type := Decl_Type;\n");
when others =>
null;
end case;
when Flat_Expression_Kinds =>
Put ("Result.Expr_Type := Expr_Type;\n");
case Kind is
when Usage_Names =>
Put ("Result.Ref_Name := Ref_Name;\n");
Put ("Result.Ref := Ref;\n");
when An_Integer_Literal |
A_Real_Literal |
A_String_Literal =>
Put ("Result.Lit_Val := Lit_Val;\n");
when others =>
null;
end case;
when Flat_Pragma_Kinds =>
Put ("Result.Pragma_Name := Pragma_Name;\n");
when A_Parameter_Specification | A_Formal_Object_Declaration =>
Put ("Result.Mode := Mode;\n");
when A_Comment =>
Put ("Result.Text := Text;\n");
when others =>
Put ("null;\n");
end case;
Put ("\oend return;\n");
Put ("\oend \1;\n\n", Constructor_Name (Kind));
end if;
end Construct_Constructor;
procedure Construct_List_Constructor
(Kind : Flat_List_Kinds;
Is_Body : Boolean)
is
begin
Put ("function \1", Constructor_Name (Kind));
Put ("\i\n(Subtrees : Ada_Tree_Array := (1 .. 0 => <>);\n");
Put ("Sloc : Asis.Text.Span := Asis.Text.Nil_Span)\n");
Put ("return \1\o", Subtype_Name (Kind));
if not Is_Body then
Put (";\n");
else
Put (" is\n");
Put ("begin\n\i");
Put
("return Result : constant \1 := Make_List (\2,\n\i",
Subtype_Name (Kind),
Capitalize (Kind'Img));
Put ("Subtrees, Sloc);\n\o");
Put ("\oend \1;\n\n", Constructor_Name (Kind));
end if;
end Construct_List_Constructor;
-- Start of processing for Generate_Factory
begin
Wide_Text_IO.Create
(Factory_Spec,
Name => "ada_trees-factory.ns",
Form => "TEXT_TRANSLATION=NO");
Wide_Text_IO.Create
(Factory_Body,
Name => "ada_trees-factory.nb",
Form => "TEXT_TRANSLATION=NO");
-- We need TEXT_TRANSLATION=NO to generate Unix-style line endings on
-- Windows; otherwise, we will fail style checks.
Wide_Text_IO.Set_Output (Factory_Spec);
Put ("-- Automatically generated by Ada_Trees.Generate_Factory.\n\n");
Put ("pragma Ada_2012;\n\n");
Wide_Text_IO.Set_Output (Factory_Body);
Put ("-- Automatically generated by Ada_Trees.Generate_Factory.\n\n");
Put ("pragma Ada_2012;\n\n");
Wide_Text_IO.Set_Output (Factory_Spec);
Put ("package Ada_Trees.Factory is\n\n");
Wide_Text_IO.Set_Output (Factory_Body);
Put ("package body Ada_Trees.Factory is\n\n");
Indent;
Wide_Text_IO.Set_Output (Factory_Spec);
Put ("pragma Style_Checks (""M200""); -- Allow long lines\n");
Put ("pragma Style_Checks (Off); -- ???\n");
Put ("-- Above can be removed if we pretty-print this code\n\n");
Wide_Text_IO.Set_Output (Factory_Body);
Put ("pragma Style_Checks (""M200""); -- Allow long lines\n");
Put ("pragma Style_Checks (Off); -- ???\n");
Put ("-- Above can be removed if we pretty-print this code\n\n");
Wide_Text_IO.Set_Output (Factory_Spec);
Put ("-- One subtype for each type/class. A concrete type asserts that\n");
Put ("-- its Kind is equal to the appropriate kind. A list type\n");
Put ("-- asserts (in addition) that all of its elements are in the\n");
Put ("-- appropriate class. And an abstract class asserts that its\n");
Put ("-- Kind is some Kind in the class.\n");
Put
("-- \1 classes total.\n\n",
Image (Integer'(Flat_Element_Kinds'Pos (Flat_Element_Kinds'Base'Last))));
Put ("------------------------\n");
Put ("-- Abstract classes --\n");
Put ("------------------------\n\n");
for Class in Flat_Abstract_Classes loop
Put
("subtype \1 is Ada_Tree with\n" & "\iPredicate => -- \2 kinds\n\i",
Subtype_Name (Class),
Image (Cardinality (Kinds_In_Class (Class))));
Put ("\1.Kind in\n\i", Subtype_Name (Class));
Put_Kinds (Kinds_In_Class (Class));
Put ("\o");
Put (";\n\n\o\o");
end loop;
Put ("-------------\n");
Put ("-- Lists --\n");
Put ("-------------\n\n");
for Class in Flat_List_Kinds loop
Put
("subtype \1 is Ada_Tree with\n" & "\iPredicate =>\n\i",
Subtype_Name (Class));
if False then -- ???
Put
("\1.Kind = \2 and then\n" &
"\i(for all Subtree of \1.Subtrees =>\n" &
"\iSubtree in \3)\o\o",
Subtype_Name (Class),
Capitalize (Class'Img),
List_Component_Subtype_Name (Class));
else
Put ("\1.Kind = \2", Subtype_Name (Class), Capitalize (Class'Img));
end if;
Put (";\n\n\o\o");
end loop;
Put ("-----------------------------\n");
Put ("-- Concrete single kinds --\n");
Put ("-----------------------------\n\n");
for Class in Opt_ASIS_Elems loop
Put
("subtype \1 is Ada_Tree with\n" & "\iPredicate =>\n\i",
Subtype_Name (Class));
if False then -- ???
Put ("\1.Kind = \2", Subtype_Name (Class), Capitalize (Class'Img));
else
if Class = Not_An_Element then
Put ("\1.Kind = \2", Subtype_Name (Class), Capitalize (Class'Img));
else
Put
("\1.Kind in \2 | Not_An_Element",
Subtype_Name (Class),
Capitalize (Class'Img));
end if;
end if;
Put (";\n\n\o\o");
end loop;
Put ("---------------\n");
Put ("-- Getters --\n");
Put ("---------------\n\n");
-- ???Could narrow down the parameter type, too.
for Q in Structural_Queries loop
-- No_Query isn't a real query, so skip it.
if Q not in No_Query then
Put
("function \1 (Tree : Ada_Tree) return \2 is\n\i" &
"(Get (Tree, \1));\n\o",
Q_Name (Q),
Subtype_Name (Query_Result_Types (Q)));
end if;
end loop;
Put ("\n");
Wide_Text_IO.Set_Output (Factory_Spec);
Put ("---------------\n");
Put ("-- Setters --\n");
Put ("---------------\n\n");
for Q in Structural_Queries loop
if Q not in No_Query then
if False then -- ???
Put
("procedure Set_\1 is new Generic_Setter\n\i" & "(\1, \2);\n\o",
Q_Name (Q),
Subtype_Name (Query_Result_Types (Q)));
else
Put
("procedure Set_\1 (Tree : Ada_Tree; Subtree: \2);\n",
Q_Name (Q),
Subtype_Name (Query_Result_Types (Q)));
end if;
end if;
end loop;
Put ("\n");
Wide_Text_IO.Set_Output (Factory_Body);
Put ("---------------\n");
Put ("-- Setters --\n");
Put ("---------------\n\n");
for Q in Structural_Queries loop
if Q not in No_Query then
Put
("procedure Set_\1 (Tree : Ada_Tree; Subtree: \2) is\n" &
"begin\n" &
"\iSet (Tree, \1, Subtree);\o\n" &
"end Set_\1;\n\n",
Q_Name (Q),
Subtype_Name (Query_Result_Types (Q)));
end if;
end loop;
Wide_Text_IO.Set_Output (Factory_Spec);
Put ("--------------------\n");
Put ("-- Constructors --\n");
Put ("--------------------\n\n");
for Kind in Opt_ASIS_Elems loop
Construct_Constructor (Kind, Is_Body => False);
end loop;
for Kind in Flat_List_Kinds loop
Construct_List_Constructor (Kind, Is_Body => False);
end loop;
Wide_Text_IO.Set_Output (Factory_Body);
Put ("--------------------\n");
Put ("-- Constructors --\n");
Put ("--------------------\n\n");
for Kind in Opt_ASIS_Elems loop
Construct_Constructor (Kind, Is_Body => True);
end loop;
for Kind in Flat_List_Kinds loop
Construct_List_Constructor (Kind, Is_Body => True);
end loop;
Outdent;
Wide_Text_IO.Set_Output (Factory_Spec);
Put ("\nend Ada_Trees.Factory;\n");
Wide_Text_IO.Set_Output (Factory_Body);
Put ("end Ada_Trees.Factory;\n");
Wide_Text_IO.Set_Output (Wide_Text_IO.Standard_Output);
Wide_Text_IO.Close (Factory_Spec);
Wide_Text_IO.Close (Factory_Body);
Main_Done := True;
end Ada_Trees.Generate_Factory;
|
