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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- S I N P U T . P --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2010, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- 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 COPYING3. If not, go to --
-- http://www.gnu.org/licenses for a complete copy of the license. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
with Ada.Unchecked_Conversion;
with Ada.Unchecked_Deallocation;
with Prj.Err;
with Sinput.C;
with System;
package body Sinput.P is
First : Boolean := True;
-- Flag used when Load_Project_File is called the first time,
-- to set Main_Source_File.
-- The flag is reset to False at the first call to Load_Project_File.
-- Calling Reset_First sets it back to True.
procedure Free is new Ada.Unchecked_Deallocation
(Lines_Table_Type, Lines_Table_Ptr);
procedure Free is new Ada.Unchecked_Deallocation
(Logical_Lines_Table_Type, Logical_Lines_Table_Ptr);
-----------------------------
-- Clear_Source_File_Table --
-----------------------------
procedure Clear_Source_File_Table is
use System;
begin
for X in 1 .. Source_File.Last loop
declare
S : Source_File_Record renames Source_File.Table (X);
Lo : constant Source_Ptr := S.Source_First;
Hi : constant Source_Ptr := S.Source_Last;
subtype Actual_Source_Buffer is Source_Buffer (Lo .. Hi);
-- Physical buffer allocated
type Actual_Source_Ptr is access Actual_Source_Buffer;
-- This is the pointer type for the physical buffer allocated
procedure Free is new Ada.Unchecked_Deallocation
(Actual_Source_Buffer, Actual_Source_Ptr);
pragma Suppress (All_Checks);
pragma Warnings (Off);
-- The following unchecked conversion is aliased safe, since it
-- is not used to create improperly aliased pointer values.
function To_Actual_Source_Ptr is new
Ada.Unchecked_Conversion (Address, Actual_Source_Ptr);
pragma Warnings (On);
Actual_Ptr : Actual_Source_Ptr :=
To_Actual_Source_Ptr (S.Source_Text (Lo)'Address);
begin
Free (Actual_Ptr);
Free (S.Lines_Table);
Free (S.Logical_Lines_Table);
end;
end loop;
Source_File.Free;
Sinput.Initialize;
end Clear_Source_File_Table;
-----------------------
-- Load_Project_File --
-----------------------
function Load_Project_File (Path : String) return Source_File_Index is
X : Source_File_Index;
begin
X := Sinput.C.Load_File (Path);
if First then
Main_Source_File := X;
First := False;
end if;
return X;
end Load_Project_File;
-----------------
-- Reset_First --
-----------------
procedure Reset_First is
begin
First := True;
end Reset_First;
--------------------------------
-- Restore_Project_Scan_State --
--------------------------------
procedure Restore_Project_Scan_State
(Saved_State : Saved_Project_Scan_State)
is
begin
Restore_Scan_State (Saved_State.Scan_State);
Source := Saved_State.Source;
Current_Source_File := Saved_State.Current_Source_File;
end Restore_Project_Scan_State;
-----------------------------
-- Save_Project_Scan_State --
-----------------------------
procedure Save_Project_Scan_State
(Saved_State : out Saved_Project_Scan_State)
is
begin
Save_Scan_State (Saved_State.Scan_State);
Saved_State.Source := Source;
Saved_State.Current_Source_File := Current_Source_File;
end Save_Project_Scan_State;
----------------------------
-- Source_File_Is_Subunit --
----------------------------
function Source_File_Is_Subunit (X : Source_File_Index) return Boolean is
begin
-- Nothing to do if X is no source file, so simply return False
if X = No_Source_File then
return False;
end if;
Prj.Err.Scanner.Initialize_Scanner (X);
-- No error for special characters that are used for preprocessing
Prj.Err.Scanner.Set_Special_Character ('#');
Prj.Err.Scanner.Set_Special_Character ('$');
-- We scan past junk to the first interesting compilation unit token, to
-- see if it is SEPARATE. We ignore WITH keywords during this and also
-- PRIVATE. The reason for ignoring PRIVATE is that it handles some
-- error situations, and also to handle PRIVATE WITH in Ada 2005 mode.
while Token = Tok_With
or else Token = Tok_Private
or else (Token not in Token_Class_Cunit and then Token /= Tok_EOF)
loop
Prj.Err.Scanner.Scan;
end loop;
Prj.Err.Scanner.Reset_Special_Characters;
return Token = Tok_Separate;
end Source_File_Is_Subunit;
end Sinput.P;
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