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|
------------------------------------------------------------------------------
-- G N A T C O L L --
-- --
-- Copyright (C) 2008-2018, 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. --
-- --
-- --
-- --
-- --
-- --
-- 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/>. --
-- --
------------------------------------------------------------------------------
pragma Ada_2012;
with Ada.Containers; use Ada.Containers;
with Ada.Containers.Indefinite_Ordered_Sets;
with Ada.Strings.Maps; use Ada.Strings.Maps;
with Ada.Text_IO; use Ada.Text_IO;
with GNATCOLL.Utils; use GNATCOLL.Utils;
-- Register advanced types
pragma Warnings (Off, "no entities of * are referenced");
with GNATCOLL.SQL_Fields; use GNATCOLL.SQL_Fields;
pragma Warnings (On, "no entities of * are referenced");
separate (GNATCOLL.Db2Ada.Main)
procedure Generate
(Generated : String; Include_Database_Create : Boolean)
is
package String_Sets is new Ada.Containers.Indefinite_Ordered_Sets
(String, "<", "=");
use String_Sets;
Spec_File, Body_File : File_Type;
function Capitalize (Name : XString) return String;
-- Make a name suitable for display
function Get_Namespace (T_Descr : Table_Description) return String;
-- Return the name of the namespace for the table
procedure Print_Comment
(File : File_Type; Indent : String; Comment : String);
-- Print a multi-line comment to the File
procedure Print_Withs (T_Descr : in out Table_Description);
-- Print all withs needed for the given table
Names : String_Sets.Set;
procedure Print_String_Constants (Table : in out Table_Description);
-- Process a table, and generate string constants for it and its fields.
-- Names is used to avoid duplicates
procedure Print_Database_Create;
-- Print the Ada subprogram that recreates the database and its initial
-- contents.
procedure Process_Tables;
-- Generate the Ada mapping for all the SQL tables
-------------------
-- Print_Comment --
-------------------
procedure Print_Comment
(File : File_Type; Indent : String; Comment : String)
is
Reflow : constant Boolean := True;
-- If True, ASCII.LF are ignored in the initial comment, and the text is
-- reflowed.
Str : String := Comment;
Start : Integer := Str'First;
Last_Space : Natural := Str'First;
begin
for C in Str'Range loop
if not Reflow and then Str (C) = ASCII.LF then
Put_Line (File, Indent & "-- " & Str (Start .. C - 1));
Start := C + 1;
Last_Space := Start;
else
if Str (C) = ASCII.LF or else Str (C) = ' ' then
Str (C) := ' ';
Last_Space := C;
if C = Start then
Start := C + 1;
end if;
end if;
if C - Start >= 78 - 4 - Indent'Length then
Put_Line
(File, Indent & "-- " & Str (Start .. Last_Space - 1));
Start := Last_Space + 1;
end if;
end if;
end loop;
if Start < Str'Last then
Put_Line (File, Indent & "-- " & Str (Start .. Str'Last));
end if;
end Print_Comment;
-----------------
-- Print_Withs --
-----------------
procedure Print_Withs (T_Descr : in out Table_Description) is
procedure For_Field (F : in out GNATCOLL.SQL.Inspect.Field);
procedure For_Field (F : in out GNATCOLL.SQL.Inspect.Field) is
Typ : constant String :=
F.Get_Type.Type_To_SQL (null, For_Database => False);
begin
for T in reverse Typ'Range loop
if Typ (T) = '.' then
Put_Line
(Spec_File,
"with " & Typ (Typ'First .. T - 1) & "; use "
& Typ (Typ'First .. T - 1) & ";");
exit;
end if;
end loop;
end For_Field;
begin
For_Each_Field (T_Descr, For_Field'Access, False);
end Print_Withs;
-------------------
-- Get_Namespace --
-------------------
function Get_Namespace (T_Descr : Table_Description) return String is
N : constant String := T_Descr.Name;
begin
for J in N'Range loop
if N (J) = '.' then
return Capitalize (N (N'First .. J - 1));
end if;
end loop;
return "";
end Get_Namespace;
--------------------
-- Process_Tables --
--------------------
procedure Process_Tables is
Namespaces : String_Sets.Set;
Indent_Level : Natural;
Process_Abstract_Tables : Boolean;
Current_Namespace : XString;
procedure Add_Namespace (T_Descr : in out Table_Description);
-- Add the namespace for T_Descr
procedure Print_Table_Spec (T_Descr : in out Table_Description);
-- Print the specs for a table.
-- If Process_Abstract_Tables is True, only abstract tables are
-- processed. Otherwise they are ignored.
procedure Print_Table_Global (Table : in out Table_Description);
-- Print the global constant for the table.
procedure Print_FK (Table : in out Table_Description);
-- Print the FK subprograms
function Table_Matches (T_Descr : Table_Description) return Boolean
is (Get_Namespace (T_Descr) = Current_Namespace
and then
((Process_Abstract_Tables and then T_Descr.Is_Abstract)
or else (not Process_Abstract_Tables
and then not T_Descr.Is_Abstract)));
-- Whether the table matches the current filtering
-------------------
-- Add_Namespace --
-------------------
procedure Add_Namespace (T_Descr : in out Table_Description) is
begin
Namespaces.Include (Get_Namespace (T_Descr));
end Add_Namespace;
----------------------
-- Print_Table_Spec --
----------------------
procedure Print_Table_Spec (T_Descr : in out Table_Description) is
Indent : constant String := (1 .. Indent_Level => ' ');
procedure For_Field (F : in out GNATCOLL.SQL.Inspect.Field);
procedure For_Field (F : in out GNATCOLL.SQL.Inspect.Field) is
Typ : constant String :=
F.Get_Type.Type_To_SQL (null, For_Database => False);
begin
Put
(Spec_File,
Indent & " " & Capitalize (F.Name) & " : " & Typ);
if T_Descr.Is_Abstract then
Put (Spec_File, " (Table_Name");
else
Put (Spec_File, " (Ta_" & Capitalize (T_Descr.Name));
end if;
Put_Line (Spec_File,
", Instance, N_" & Capitalize (F.Name) & ", Index);");
if F.Description /= "" then
Print_Comment (Spec_File, Indent & " ", F.Description);
New_Line (Spec_File);
end if;
end For_Field;
begin
if not Table_Matches (T_Descr) then
return;
end if;
New_Line (Spec_File);
if T_Descr.Is_Abstract then
Put_Line
(Spec_File,
Indent & "type T_" & Capitalize (T_Descr.Name));
Put_Line
(Spec_File,
Indent & " (Table_Name : Cst_String_Access;");
Put_Line
(Spec_File,
Indent & " Instance : Cst_String_Access;");
Put_Line
(Spec_File,
Indent & " Index : Integer)");
Put
(Spec_File,
Indent & "is abstract new ");
if T_Descr.Super_Table /= No_Table then
Put (Spec_File, "T_" & Capitalize (T_Descr.Super_Table.Name));
else
Put (Spec_File, "SQL_Table");
end if;
Put_Line (Spec_File, " (Table_Name, Instance, Index) with");
else
Put_Line
(Spec_File,
Indent & "type T_Abstract_" & Capitalize (T_Descr.Name));
Put_Line
(Spec_File,
Indent & " (Instance : Cst_String_Access;");
Put_Line
(Spec_File,
Indent & " Index : Integer)");
Put
(Spec_File,
Indent & "is abstract new ");
if T_Descr.Super_Table /= No_Table then
Put (Spec_File, "T_" & Capitalize (T_Descr.Super_Table.Name));
else
Put (Spec_File, "SQL_Table");
end if;
Put_Line (Spec_File,
" (Ta_" & Capitalize (T_Descr.Name)
& ", Instance, Index) with");
end if;
Put_Line (Spec_File, Indent & "record");
For_Each_Field (T_Descr, For_Field'Access, False);
Put_Line (Spec_File, Indent & "end record;");
Print_Comment (Spec_File, Indent, T_Descr.Description);
if not T_Descr.Is_Abstract then
New_Line (Spec_File);
Put_Line (Spec_File, Indent & "type T_" & Capitalize (T_Descr.Name)
& " (Instance : Cst_String_Access)");
Put (Spec_File,
Indent & " is new T_Abstract_" & Capitalize (T_Descr.Name));
Put_Line (Spec_File, " (Instance, -1) with null record;");
Put_Line
(Spec_File,
Indent & "-- To use named aliases of the table in a query");
Put_Line
(Spec_File,
Indent & "-- Use Instance=>null to use the default name.");
New_Line (Spec_File);
Put_Line
(Spec_File,
Indent & "type T_Numbered_" & Capitalize (T_Descr.Name)
& " (Index : Integer)");
Put (Spec_File,
Indent & " is new T_Abstract_" & Capitalize (T_Descr.Name));
Put_Line (Spec_File, " (null, Index) with null record;");
Put_Line
(Spec_File,
Indent & "-- To use aliases in the form name1, name2,...");
end if;
end Print_Table_Spec;
--------------
-- Print_FK --
--------------
procedure Print_FK (Table : in out Table_Description) is
Indent : constant String := (1 .. Indent_Level => ' ');
Prev_Id : Integer := -1;
procedure For_FK
(From, To : GNATCOLL.SQL.Inspect.Field;
Id : Natural; Ambiguous : Boolean);
procedure Finish_Subprogram (Id : Integer);
procedure Finish_Subprogram (Id : Integer) is
begin
if Id /= Prev_Id then
Put_Line (Body_File, ";");
Put_Line (Body_File, Indent & "end FK;");
end if;
end Finish_Subprogram;
procedure For_FK
(From, To : GNATCOLL.SQL.Inspect.Field;
Id : Natural; Ambiguous : Boolean) is
begin
if not Ambiguous then
if Id /= Prev_Id then
if Prev_Id /= -1 then
Finish_Subprogram (Id);
end if;
Put_Line
(Spec_File, Indent & "function FK (Self : T_" &
Capitalize (Table.Name) &
"'Class; Foreign : T_" & Capitalize (To.Get_Table.Name)
& "'Class) return SQL_Criteria;");
New_Line (Body_File);
Put_Line
(Body_File, Indent & "function FK (Self : T_" &
Capitalize (Table.Name) &
"'Class; Foreign : T_" & Capitalize (To.Get_Table.Name)
& "'Class) return SQL_Criteria is");
Put_Line (Body_File, Indent & "begin");
Put (Body_File, Indent & " return Self.");
else
New_Line (Body_File);
Put (Body_File, Indent & " and Self.");
end if;
Put (Body_File,
Capitalize (From.Name)
& " = Foreign." & Capitalize (To.Name));
Prev_Id := Id;
end if;
end For_FK;
begin
if Get_Namespace (Table) = Current_Namespace then
For_Each_FK (Table, For_FK'Access);
Finish_Subprogram (-1);
end if;
end Print_FK;
------------------------
-- Print_Table_Global --
------------------------
procedure Print_Table_Global (Table : in out Table_Description) is
Indent : constant String := (1 .. Indent_Level => ' ');
NS : constant String := Get_Namespace (Table);
begin
if not Table.Is_Abstract
and then NS = Current_Namespace
then
declare
-- The namespace's name is already part of the enclosing
-- package, so don't duplicate it in the table's name.
N : constant String := Capitalize (Table.Name);
N2 : constant String :=
N (N'First
+ (if NS'Length = 0 then 0 else NS'Length + 1)
.. N'Last);
begin
Put_Line
(Spec_File, Indent & N2 & " : T_" & N & " (null);");
end;
end if;
end Print_Table_Global;
begin
-- Compute the namespaces
For_Each_Table (Schema, Add_Namespace'Access);
for Namespace of Namespaces loop
Current_Namespace := To_XString (Namespace);
if Namespace /= "" then
New_Line (Spec_File);
Put_Line (Spec_File,
" ---" & (1 .. Namespace'Length => '-') & "---");
Put_Line (Spec_File,
" -- " & Namespace & " --");
Put_Line (Spec_File,
" ---" & (1 .. Namespace'Length => '-') & "---");
New_Line (Spec_File);
Put_Line (Spec_File, " package " & Namespace & " is");
Put_Line (Body_File, " package body " & Namespace & " is");
Indent_Level := 6;
else
Indent_Level := 3;
end if;
Process_Abstract_Tables := True;
For_Each_Table (Schema, Print_Table_Spec'Access);
Process_Abstract_Tables := False;
For_Each_Table (Schema, Print_Table_Spec'Access);
New_Line (Spec_File);
For_Each_Table (Schema, Print_FK'Access);
For_Each_Table (Schema, Print_Table_Global'Access);
if Namespace /= "" then
Put_Line (Spec_File, " end " & Namespace & ";");
Put_Line (Body_File, " end " & Namespace & ";");
end if;
end loop;
end Process_Tables;
----------------
-- Capitalize --
----------------
function Capitalize (Name : XString) return String is
begin
return Capitalize (To_String (Name));
end Capitalize;
----------------------------
-- Print_String_Constants --
----------------------------
procedure Print_String_Constants (Table : in out Table_Description) is
procedure For_Field (F : in out GNATCOLL.SQL.Inspect.Field);
procedure For_Field (F : in out GNATCOLL.SQL.Inspect.Field) is
begin
Names.Include (F.Name);
end For_Field;
begin
Put_Line (Spec_File, " TC_" & Capitalize (Table.Name)
& " : aliased constant String := """
& Ada_Quote (Quote_Keyword (Table.Name)) & """;");
Put_Line (Spec_File, " Ta_" & Capitalize (Table.Name)
& " : constant Cst_String_Access := TC_"
& Capitalize (Table.Name) & "'Access;");
For_Each_Field (Table, For_Field'Access, True);
end Print_String_Constants;
---------------------------
-- Print_Database_Create --
---------------------------
procedure Print_Database_Create is
Spec : constant String :=
" procedure Create_Database" & ASCII.LF
& " (DB : not null access"
& " GNATCOLL.SQL.Exec.Database_Connection_Record'Class)";
procedure Puts (Data : String);
-- Format Data as an Ada String
procedure Puts (Data : String) is
begin
for D in Data'Range loop
if Data (D) = '"' then
Put (Body_File, """""");
elsif Data (D) = ASCII.LF then
Put_Line (Body_File, """ & ASCII.LF");
Put (Body_File, " & """);
else
Put (Body_File, Data (D));
end if;
end loop;
end Puts;
F : File_Schema_IO;
begin
Put_Line (Spec_File, ASCII.LF & Spec & ";");
Put_Line
(Spec_File, " -- Create the database and its initial contents");
Put_Line
(Spec_File, " -- The SQL is not automatically committed");
Put_Line (Body_File, ASCII.LF & Spec & ASCII.LF & " is");
Put (Body_File, " DbSchema : constant String := """);
F.File := GNATCOLL.VFS.No_File;
Write_Schema
(F, Schema, Puts => Puts'Access, Align_Columns => False,
Show_Comments => False);
Put_Line (Body_File, """;");
if Load_File /= GNATCOLL.VFS.No_File then
Put (Body_File, " Data : constant String := """);
Load_Data (Load_File, Puts'Access);
Put_Line (Body_File, """;");
end if;
Put_Line (Body_File, " F : File_Schema_IO;");
Put_Line (Body_File, " D : DB_Schema_IO;");
Put_Line (Body_File, " Schema : DB_Schema;");
Put_Line (Body_File, " begin");
Put_Line (Body_File, " Schema := Read_Schema (F, DbSchema);");
Put_Line (Body_File, " D.DB := Database_Connection (DB);");
Put_Line (Body_File, " Write_Schema (D, Schema);");
if Load_File /= GNATCOLL.VFS.No_File then
Put_Line (Body_File, " if DB.Success then");
Put_Line (Body_File, " Load_Data (DB, Data, Schema);");
Put_Line (Body_File, " end if;");
end if;
Put_Line (Body_File, " end Create_Database;");
end Print_Database_Create;
N : String_Sets.Cursor;
F : Virtual_File;
Base_File : constant Filesystem_String :=
+To_Lower (Translate (Generated, To_Mapping (".", "-")));
begin
-- This version creates the output via a simple list of calls to Put_Line.
-- A more advanced version using the templates_parser is also available,
-- but requires the installation of the latter on the machine
-- Create the database_names package
if Output (Output_Ada_Specs) then
F := Create_From_Dir
(Dir => Output_Dir, Base_Name => Base_File & "_names.ads");
Create (Spec_File, Name => F.Display_Full_Name);
Put_Line (Spec_File, "with GNATCOLL.SQL; use GNATCOLL.SQL;");
Put_Line (Spec_File, "package " & Generated & "_Names is");
Put_Line (Spec_File, " pragma Style_Checks (Off);");
For_Each_Table (Schema, Print_String_Constants'Access);
New_Line (Spec_File);
N := First (Names);
while Has_Element (N) loop
Put_Line (Spec_File, " NC_" & Capitalize (Element (N))
& " : aliased constant String := """
& Ada_Quote (Quote_Keyword (Element (N))) & """;");
Put_Line (Spec_File, " N_" & Capitalize (Element (N))
& " : constant Cst_String_Access := NC_"
& Element (N) & "'Access;");
Next (N);
end loop;
Put_Line (Spec_File, "end " & Generated & "_Names;");
Close (Spec_File);
end if;
-- Create the database package
F := Create_From_Dir (Dir => Output_Dir, Base_Name => Base_File & ".ads");
Create (Spec_File, Name => F.Display_Full_Name);
Put_Line (Spec_File, "with GNATCOLL.SQL; use GNATCOLL.SQL;");
Put_Line
(Spec_File,
"pragma Warnings (Off, ""no entities of * are referenced"");");
Put_Line
(Spec_File,
"pragma Warnings (Off, ""use clause for package * has no effect"");");
Put_Line
(Spec_File, "with GNATCOLL.SQL_Fields; use GNATCOLL.SQL_Fields;");
For_Each_Table (Schema, Print_Withs'Access);
Put_Line
(Spec_File,
"pragma Warnings (On, ""no entities of * are referenced"");");
Put_Line
(Spec_File,
"pragma Warnings (On, ""use clause for package * has no effect"");");
if Include_Database_Create then
Put_Line (Spec_File, "with GNATCOLL.SQL.Exec;");
end if;
if Output (Output_Ada_Specs) then
Put_Line (Spec_File, "with " & Generated & "_Names;"
& " use " & Generated & "_Names;");
end if;
Put_Line (Spec_File, "package " & Generated & " is");
Put_Line (Spec_File, " pragma Style_Checks (Off);");
if Output (Output_Ada_Specs) then
Put_Line (Spec_File, " pragma Elaborate_Body;");
F := Create_From_Dir
(Dir => Output_Dir, Base_Name => Base_File & ".adb");
Create (Body_File, Name => F.Display_Full_Name);
if Include_Database_Create then
Put_Line
(Body_File, "with GNATCOLL.SQL.Inspect; use GNATCOLL.SQL.Inspect;");
Put_Line
(Body_File, "with GNATCOLL.SQL.Exec; use GNATCOLL.SQL.Exec;");
end if;
Put_Line (Body_File, "package body " & Generated & " is");
Put_Line (Body_File, " pragma Style_Checks (Off);");
end if;
-- Process enumerations
if Output (Output_Ada_Enums) then
declare
C : Enumeration_Lists.Cursor := First (Enumerations);
Enum : Dumped_Enums;
C2, C3 : String_Lists.Cursor;
Max_Name_Len, Max_Value_Len : Integer;
begin
while Has_Element (C) loop
Enum := Element (C);
declare
Type_Name : constant String :=
Capitalize (Enum.Type_Name);
Base_Type : constant String :=
Capitalize (Enum.Base_Type);
Is_String : constant Boolean :=
Base_Type = "String";
begin
New_Line (Spec_File);
Put_Line (Spec_File, " subtype " & Type_Name
& " is " & Base_Type & ";");
Max_Name_Len := 0;
for N of Enum.Names loop
if N'Length > Max_Name_Len then
Max_Name_Len := N'Length;
end if;
end loop;
Max_Value_Len := 6; -- "others"
for V of Enum.Values loop
if V'Length > Max_Value_Len then
Max_Value_Len := V'Length;
end if;
end loop;
C2 := First (Enum.Names);
C3 := First (Enum.Values);
while Has_Element (C2) loop
Put_Line (Spec_File,
" "
& Capitalize (To_String (Enum.Prefix)) & '_'
& Head (Capitalize (Element (C2)), Max_Name_Len)
& " : constant " & Type_Name & " := "
& (if Is_String
then """" & Element (C3) & """"
else Element (C3))
& ";");
Next (C2);
Next (C3);
end loop;
if Output (Output_Ada_Enums_Image)
and then not Is_String
then
New_Line (Spec_File);
Put_Line (Spec_File,
" function Image_" & Type_Name);
Put_Line (Spec_File, " (X : "
& Capitalize (Enum.Type_Name) & ") return String");
Put_Line (Spec_File, " is (case X is");
C2 := First (Enum.Names);
C3 := First (Enum.Values);
while Has_Element (C2) loop
Put_Line (Spec_File,
" when " & Head (Element (C3), Max_Value_Len)
& " => """ & Element (C2) & """,");
Next (C2);
Next (C3);
end loop;
Put_Line (Spec_File,
" when others =>");
Put_Line (Spec_File,
" raise Constraint_Error");
Put_Line (Spec_File,
" with ""invalid "
& Type_Name & " "" & X'Img);");
end if;
end;
Next (C);
end loop;
end;
-- Process variables
declare
C4 : Variables_List.Cursor := First (Variables);
begin
if Has_Element (C4) then
New_Line (Spec_File);
end if;
while Has_Element (C4) loop
Put_Line
(Spec_File, " " & Capitalize (Element (C4).Name)
& " : constant := " & To_String (Element (C4).Value) & ";");
Print_Comment (Spec_File, " ", To_String (Element (C4).Comment));
Next (C4);
end loop;
end;
end if;
if Output (Output_Ada_Specs) then
Process_Tables;
end if;
if Include_Database_Create then
Print_Database_Create;
end if;
Put_Line (Spec_File, "end " & Generated & ";");
Close (Spec_File);
if Output (Output_Ada_Specs) then
Put_Line (Body_File, "end " & Generated & ";");
Close (Body_File);
end if;
end Generate;
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