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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- P R J . E N V --
-- --
-- S p e c --
-- --
-- Copyright (C) 2001-2013, 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. --
-- --
------------------------------------------------------------------------------
-- This package implements services for Project-aware tools, mostly related
-- to the environment (configuration pragma files, path files, mapping files).
with GNAT.Dynamic_HTables;
with GNAT.OS_Lib;
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
(Shared : Shared_Project_Tree_Data_Access;
Path_FD : out File_Descriptor;
Path_Name : out Path_Name_Type;
File_Use : String);
-- Create temporary file, 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. See fmap for a description of the format
-- of the mapping 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.
procedure Create_Config_Pragmas_File
(For_Project : Project_Id;
In_Tree : Project_Tree_Ref);
-- If we need SFN pragmas, either for non standard naming schemes or for
-- individual units.
procedure Create_New_Path_File
(Shared : Shared_Project_Tree_Data_Access;
Path_FD : out File_Descriptor;
Path_Name : out Path_Name_Type);
-- Create a new temporary path file, placing 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;
In_Tree : Project_Tree_Ref;
Including_Libraries : Boolean := True) return String_Access;
-- Get the ADA_OBJECTS_PATH of a Project file. For the first call with the
-- exact same parameters, compute it and cache it. When Including_Libraries
-- is True, the object directory of a library project is replaced with the
-- library ALI directory of this project (usually the library directory of
-- the project, except when attribute Library_ALI_Dir is declared) except
-- when the library ALI directory does not contain any ALI file.
procedure Set_Ada_Paths
(Project : Project_Id;
In_Tree : Project_Tree_Ref;
Including_Libraries : Boolean;
Include_Path : Boolean := True;
Objects_Path : Boolean := True);
-- 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;
Tree : Project_Tree_Ref);
-- Iterate through all the object directories of a project, including those
-- of imported or modified projects.
------------------
-- Project Path --
------------------
type Project_Search_Path is private;
-- An abstraction of the project path. This object provides subprograms
-- to search for projects on the path (and caches the results to improve
-- efficiency).
No_Project_Search_Path : constant Project_Search_Path;
procedure Initialize_Default_Project_Path
(Self : in out Project_Search_Path;
Target_Name : String);
-- Initialize Self. It will then contain the default project path on the
-- given target (including directories specified by the environment
-- variables ADA_PROJECT_PATH and GPR_PROJECT_PATH). This does nothing if
-- Self has already been initialized.
procedure Copy (From : Project_Search_Path; To : out Project_Search_Path);
-- Copy From into To
procedure Initialize_Empty (Self : in out Project_Search_Path);
-- Initialize self with an empty list of directories. If Self had already
-- been set, it is reset.
function Is_Initialized (Self : Project_Search_Path) return Boolean;
-- Whether Self has been initialized
procedure Free (Self : in out Project_Search_Path);
-- Free the memory used by Self
procedure Add_Directories
(Self : in out Project_Search_Path;
Path : String;
Prepend : Boolean := False);
-- Add one or more directories to the path. Directories added with this
-- procedure are added in order after the current directory and before the
-- path given by the environment variable GPR_PROJECT_PATH. A value of "-"
-- will remove the default project directory from the project path.
--
-- Calls to this subprogram must be performed before the first call to
-- Find_Project below, or PATH will be added at the end of the search path.
procedure Get_Path (Self : Project_Search_Path; Path : out String_Access);
-- Return the current value of the project path, either the value set
-- during elaboration of the package or, if procedure Set_Project_Path has
-- been called, the value set by the last call to Set_Project_Path. The
-- returned value must not be modified.
-- Self must have been initialized first.
procedure Set_Path (Self : in out Project_Search_Path; Path : String);
-- Override the value of the project path. This also removes the implicit
-- default search directories.
generic
with function Check_Filename (Name : String) return Boolean;
function Find_Name_In_Path
(Self : Project_Search_Path;
Path : String) return String_Access;
-- Find a name in the project search path of Self. Check_Filename is
-- the predicate to valid the search. If Path is an absolute filename,
-- simply calls the predicate with Path. Otherwise, calls the predicate
-- for each component of the path. Stops as soon as the predicate
-- returns True and returns the name, or returns null in case of failure.
procedure Find_Project
(Self : in out Project_Search_Path;
Project_File_Name : String;
Directory : String;
Path : out Namet.Path_Name_Type);
-- Search for a project with the given name either in Directory (which
-- often will be the directory contain the project we are currently parsing
-- and which we found a reference to another project), or in the project
-- path Self. Self must have been initialized first.
--
-- Project_File_Name can optionally contain directories, and the extension
-- (.gpr) for the file name is optional.
--
-- Returns No_Name if no such project was found
function Get_Runtime_Path
(Self : Project_Search_Path;
Name : String) return String_Access;
-- Compute the full path for the project-based runtime name. It first
-- checks that name is not a simple name (must has a path separator in it),
-- and returns null in case of failure. This check might be removed in the
-- future. The name is simply searched on the project path.
private
package Projects_Paths is new GNAT.Dynamic_HTables.Simple_HTable
(Header_Num => Header_Num,
Element => Path_Name_Type,
No_Element => No_Path,
Key => Name_Id,
Hash => Hash,
Equal => "=");
type Project_Search_Path is record
Path : GNAT.OS_Lib.String_Access;
-- As a special case, if the first character is '#:" or this variable
-- is unset, this means that the PATH has not been fully initialized
-- yet (although subprograms above will properly take care of that).
Cache : Projects_Paths.Instance;
end record;
No_Project_Search_Path : constant Project_Search_Path :=
(Path => null,
Cache => Projects_Paths.Nil);
end Prj.Env;
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