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--                                                                          --

--                         GNAT COMPILER COMPONENTS                         --

--                                                                          --

--                              P R J . E N V                               --

--                                                                          --

--                                 S p e c                                  --

--                                                                          --

--          Copyright (C) 2001-2009, 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.      --

--                                                                          --

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--  This package implements services for Project-aware tools, mostly related

--  to the environment (configuration pragma files, path files, mapping files).

package Prj.Env is

   procedure Initialize (In_Tree : Project_Tree_Ref);

   --  Initialize global components relative to environment variables

   procedure Print_Sources (In_Tree : Project_Tree_Ref);

   --  Output the list of sources, after Project files have been scanned

   procedure Create_Mapping (In_Tree : Project_Tree_Ref);

   --  Create in memory mapping from the sources of all the projects (in body

   --  of package Fmap), so that Osint.Find_File will find the correct path

   --  corresponding to a source.

   procedure Create_Temp_File

     (In_Tree   : Project_Tree_Ref;

      Path_FD   : out File_Descriptor;

      Path_Name : out Path_Name_Type;

      File_Use  : String);

   --  Create temporary file, and fail with an error if it could not be created

   procedure Create_Mapping_File

     (Project  : Project_Id;

      Language : Name_Id;

      In_Tree  : Project_Tree_Ref;

      Name     : out Path_Name_Type);

   --  Create a temporary mapping file for project Project. For each source or

   --  template of Language in the Project, put the mapping of its file

   --  name and path name in this file.

   --

   --  Implementation note: we pass a language name, not a language_index here,

   --  since the latter would have to match exactly the index of that language

   --  for the specified project, and that is not information available in

   --  buildgpr.adb.

   --

   --  See fmap for a description of the format of the mapping file

   procedure Create_Config_Pragmas_File

     (For_Project : Project_Id;

      In_Tree     : Project_Tree_Ref);

   --  If there needs to have SFN pragmas, either for non standard naming

   --  schemes or for individual units.

   procedure Create_New_Path_File

     (In_Tree   : Project_Tree_Ref;

      Path_FD   : out File_Descriptor;

      Path_Name : out Path_Name_Type);

   --  Create a new temporary path file. Get the file name in Path_Name.

   function Ada_Include_Path

     (Project   : Project_Id;

      In_Tree   : Project_Tree_Ref;

      Recursive : Boolean := False) return String;

   --  Get the source search path of a Project file. If Recursive it True, get

   --  all the source directories of the imported and modified project files

   --  (recursively). If Recursive is False, just get the path for the source

   --  directories of Project. Note: the resulting String may be empty if there

   --  is no source directory in the project file.

   function Ada_Objects_Path

     (Project             : Project_Id;

      Including_Libraries : Boolean := True) return String_Access;

   --  Get the ADA_OBJECTS_PATH of a Project file. For the first call, compute

   --  it and cache it. When Including_Libraries is False, do not include the

   --  object directories of the library projects, and do not cache the result.

   procedure Set_Ada_Paths

     (Project             : Project_Id;

      In_Tree             : Project_Tree_Ref;

      Including_Libraries : Boolean);

   --  Set the environment variables for additional project path files, after

   --  creating the path files if necessary.

   function File_Name_Of_Library_Unit_Body

     (Name              : String;

      Project           : Project_Id;

      In_Tree           : Project_Tree_Ref;

      Main_Project_Only : Boolean := True;

      Full_Path         : Boolean := False) return String;

   --  Returns the file name of a library unit, in canonical case. Name may or

   --  may not have an extension (corresponding to the naming scheme of the

   --  project). If there is no body with this name, but there is a spec, the

   --  name of the spec is returned.

   --

   --  If Full_Path is False (the default), the simple file name is returned.

   --

   --  If Full_Path is True, the absolute path name is returned.

   --

   --  If neither a body nor a spec can be found, an empty string is returned.

   --  If Main_Project_Only is True, the unit must be an immediate source of

   --  Project. If it is False, it may be a source of one of its imported

   --  projects.

   function Project_Of

     (Name         : String;

      Main_Project : Project_Id;

      In_Tree      : Project_Tree_Ref) return Project_Id;

   --  Get the project of a source. The source file name may be truncated

   --  (".adb" or ".ads" may be missing). If the source is in a project being

   --  extended, return the ultimate extending project. If it is not a source

   --  of any project, return No_Project.

   procedure Get_Reference

     (Source_File_Name : String;

      In_Tree          : Project_Tree_Ref;

      Project          : out Project_Id;

      Path             : out Path_Name_Type);

   --  Returns the project of a source and its path in displayable form

   generic

      with procedure Action (Path : String);

   procedure For_All_Source_Dirs

     (Project : Project_Id;

      In_Tree : Project_Tree_Ref);

   --  Iterate through all the source directories of a project, including those

   --  of imported or modified projects.

   --  Only returns those directories that potentially contain Ada sources (ie

   --  ignore projects that have no Ada sources

   generic

      with procedure Action (Path : String);

   procedure For_All_Object_Dirs (Project : Project_Id);

   --  Iterate through all the object directories of a project, including

   --  those of imported or modified projects.

end Prj.Env;