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|
------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- P R J . P A R T --
-- --
-- B o d y --
-- --
-- $Revision$
-- --
-- Copyright (C) 2001 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 2, 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 COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
-- --
------------------------------------------------------------------------------
with Ada.Characters.Handling; use Ada.Characters.Handling;
with Ada.Exceptions; use Ada.Exceptions;
with Errout; use Errout;
with GNAT.Directory_Operations; use GNAT.Directory_Operations;
with GNAT.OS_Lib; use GNAT.OS_Lib;
with Namet; use Namet;
with Osint; use Osint;
with Output; use Output;
with Prj.Com; use Prj.Com;
with Prj.Dect;
with Scans; use Scans;
with Scn; use Scn;
with Sinfo; use Sinfo;
with Sinput; use Sinput;
with Sinput.P; use Sinput.P;
with Stringt; use Stringt;
with Table;
with Types; use Types;
pragma Elaborate_All (GNAT.OS_Lib);
package body Prj.Part is
Dir_Sep : Character renames GNAT.OS_Lib.Directory_Separator;
Project_File_Extension : String := ".gpr";
Project_Path : String_Access;
-- The project path; initialized during package elaboration.
Ada_Project_Path : constant String := "ADA_PROJECT_PATH";
Prj_Path : constant String_Access := Getenv (Ada_Project_Path);
------------------------------------
-- Local Packages and Subprograms --
------------------------------------
package Project_Stack is new Table.Table
(Table_Component_Type => Name_Id,
Table_Index_Type => Nat,
Table_Low_Bound => 1,
Table_Initial => 10,
Table_Increment => 10,
Table_Name => "Prj.Part.Project_Stack");
-- This table is used to detect circular dependencies
-- for imported and modified projects.
procedure Parse_Context_Clause
(Context_Clause : out Project_Node_Id;
Project_Directory : Name_Id);
-- Parse the context clause of a project
-- Does nothing if there is b\no context clause (if the current
-- token is not "with").
procedure Parse_Single_Project
(Project : out Project_Node_Id;
Path_Name : String;
Modified : Boolean);
-- Parse a project file.
-- Recursive procedure: it calls itself for imported and
-- modified projects.
function Path_Name_Of
(File_Name : String;
Directory : String)
return String;
-- Returns the path name of a (non project) file.
-- Returns an empty string if file cannot be found.
function Project_Path_Name_Of
(Project_File_Name : String;
Directory : String)
return String;
-- Returns the path name of a project file.
-- Returns an empty string if project file cannot be found.
function Immediate_Directory_Of (Path_Name : Name_Id) return Name_Id;
-- Get the directory of the file with the specified path name.
-- This includes the directory separator as the last character.
-- Returns "./" if Path_Name contains no directory separator.
function Simple_File_Name_Of (Path_Name : Name_Id) return Name_Id;
-- Returns the name of a file with the specified path name
-- with no directory information.
function Project_Name_From (Path_Name : String) return Name_Id;
-- Returns the name of the project that corresponds to its path name.
-- Returns No_Name if the path name is invalid, because the corresponding
-- project name does not have the syntax of an ada identifier.
----------------------------
-- Immediate_Directory_Of --
----------------------------
function Immediate_Directory_Of (Path_Name : Name_Id) return Name_Id is
begin
Get_Name_String (Path_Name);
for Index in reverse 1 .. Name_Len loop
if Name_Buffer (Index) = '/'
or else Name_Buffer (Index) = Dir_Sep
then
-- Remove from name all characters after the last
-- directory separator.
Name_Len := Index;
return Name_Find;
end if;
end loop;
-- There is no directory separator in name. Return "./" or ".\"
Name_Len := 2;
Name_Buffer (1) := '.';
Name_Buffer (2) := Dir_Sep;
return Name_Find;
end Immediate_Directory_Of;
-----------
-- Parse --
-----------
procedure Parse
(Project : out Project_Node_Id;
Project_File_Name : String;
Always_Errout_Finalize : Boolean)
is
Current_Directory : constant String := Get_Current_Dir;
begin
Project := Empty_Node;
if Current_Verbosity >= Medium then
Write_Str ("ADA_PROJECT_PATH=""");
Write_Str (Project_Path.all);
Write_Line ("""");
end if;
declare
Path_Name : constant String :=
Project_Path_Name_Of (Project_File_Name,
Directory => Current_Directory);
begin
-- Initialize the tables
Tree_Private_Part.Project_Nodes.Set_Last (Empty_Node);
Tree_Private_Part.Projects_Htable.Reset;
Errout.Initialize;
-- And parse the main project file
if Path_Name = "" then
Fail ("project file """ & Project_File_Name & """ not found");
end if;
Parse_Single_Project
(Project => Project,
Path_Name => Path_Name,
Modified => False);
if Errout.Errors_Detected > 0 then
Project := Empty_Node;
end if;
if Project = Empty_Node or else Always_Errout_Finalize then
Errout.Finalize;
end if;
end;
exception
when X : others =>
-- Internal error
Write_Line (Exception_Information (X));
Write_Str ("Exception ");
Write_Str (Exception_Name (X));
Write_Line (" raised, while processing project file");
Project := Empty_Node;
end Parse;
--------------------------
-- Parse_Context_Clause --
--------------------------
procedure Parse_Context_Clause
(Context_Clause : out Project_Node_Id;
Project_Directory : Name_Id)
is
Project_Directory_Path : constant String :=
Get_Name_String (Project_Directory);
Current_With_Clause : Project_Node_Id := Empty_Node;
Next_With_Clause : Project_Node_Id := Empty_Node;
begin
-- Assume no context clause
Context_Clause := Empty_Node;
With_Loop :
-- If Token is not WITH, there is no context clause,
-- or we have exhausted the with clauses.
while Token = Tok_With loop
Comma_Loop :
loop
Scan; -- scan past WITH or ","
Expect (Tok_String_Literal, "literal string");
if Token /= Tok_String_Literal then
return;
end if;
-- New with clause
if Current_With_Clause = Empty_Node then
-- First with clause of the context clause
Current_With_Clause := Default_Project_Node
(Of_Kind => N_With_Clause);
Context_Clause := Current_With_Clause;
else
Next_With_Clause := Default_Project_Node
(Of_Kind => N_With_Clause);
Set_Next_With_Clause_Of (Current_With_Clause, Next_With_Clause);
Current_With_Clause := Next_With_Clause;
end if;
Set_String_Value_Of (Current_With_Clause, Strval (Token_Node));
Set_Location_Of (Current_With_Clause, Token_Ptr);
String_To_Name_Buffer (String_Value_Of (Current_With_Clause));
declare
Original_Path : constant String :=
Name_Buffer (1 .. Name_Len);
Imported_Path_Name : constant String :=
Project_Path_Name_Of
(Original_Path,
Project_Directory_Path);
Withed_Project : Project_Node_Id := Empty_Node;
begin
if Imported_Path_Name = "" then
-- The project file cannot be found
Name_Len := Original_Path'Length;
Name_Buffer (1 .. Name_Len) := Original_Path;
Error_Msg_Name_1 := Name_Find;
Error_Msg ("unknown project file: {", Token_Ptr);
else
-- Parse the imported project
Parse_Single_Project
(Project => Withed_Project,
Path_Name => Imported_Path_Name,
Modified => False);
if Withed_Project /= Empty_Node then
-- If parsing was successful, record project name
-- and path name in with clause
Set_Project_Node_Of (Current_With_Clause, Withed_Project);
Set_Name_Of (Current_With_Clause,
Name_Of (Withed_Project));
Name_Len := Imported_Path_Name'Length;
Name_Buffer (1 .. Name_Len) := Imported_Path_Name;
Set_Path_Name_Of (Current_With_Clause, Name_Find);
end if;
end if;
end;
Scan;
if Token = Tok_Semicolon then
-- End of (possibly multiple) with clause;
Scan; -- scan past the semicolon.
exit Comma_Loop;
elsif Token /= Tok_Comma then
Error_Msg ("expected comma or semi colon", Token_Ptr);
exit Comma_Loop;
end if;
end loop Comma_Loop;
end loop With_Loop;
end Parse_Context_Clause;
--------------------------
-- Parse_Single_Project --
--------------------------
procedure Parse_Single_Project
(Project : out Project_Node_Id;
Path_Name : String;
Modified : Boolean)
is
Canonical_Path_Name : Name_Id;
Project_Directory : Name_Id;
Project_Scan_State : Saved_Project_Scan_State;
Source_Index : Source_File_Index;
Modified_Project : Project_Node_Id := Empty_Node;
A_Project_Name_And_Node : Tree_Private_Part.Project_Name_And_Node :=
Tree_Private_Part.Projects_Htable.Get_First;
Name_From_Path : constant Name_Id := Project_Name_From (Path_Name);
use Tree_Private_Part;
begin
Name_Len := Path_Name'Length;
Name_Buffer (1 .. Name_Len) := Path_Name;
Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
Canonical_Path_Name := Name_Find;
-- Check for a circular dependency
for Index in 1 .. Project_Stack.Last loop
if Canonical_Path_Name = Project_Stack.Table (Index) then
Error_Msg ("circular dependency detected", Token_Ptr);
Error_Msg_Name_1 := Canonical_Path_Name;
Error_Msg ("\ { is imported by", Token_Ptr);
for Current in reverse 1 .. Project_Stack.Last loop
Error_Msg_Name_1 := Project_Stack.Table (Current);
if Error_Msg_Name_1 /= Canonical_Path_Name then
Error_Msg
("\ { which itself is imported by", Token_Ptr);
else
Error_Msg ("\ {", Token_Ptr);
exit;
end if;
end loop;
Project := Empty_Node;
return;
end if;
end loop;
Project_Stack.Increment_Last;
Project_Stack.Table (Project_Stack.Last) := Canonical_Path_Name;
-- Check if the project file has already been parsed.
while
A_Project_Name_And_Node /= Tree_Private_Part.No_Project_Name_And_Node
loop
if
Path_Name_Of (A_Project_Name_And_Node.Node) = Canonical_Path_Name
then
if Modified then
if A_Project_Name_And_Node.Modified then
Error_Msg
("cannot modify the same project file several times",
Token_Ptr);
else
Error_Msg
("cannot modify an imported project file",
Token_Ptr);
end if;
elsif A_Project_Name_And_Node.Modified then
Error_Msg
("cannot imported a modified project file",
Token_Ptr);
end if;
Project := A_Project_Name_And_Node.Node;
Project_Stack.Decrement_Last;
return;
end if;
A_Project_Name_And_Node := Tree_Private_Part.Projects_Htable.Get_Next;
end loop;
-- We never encountered this project file
-- Save the scan state, load the project file and start to scan it.
Save_Project_Scan_State (Project_Scan_State);
Source_Index := Load_Project_File (Path_Name);
-- if we cannot find it, we stop
if Source_Index = No_Source_File then
Project := Empty_Node;
Project_Stack.Decrement_Last;
return;
end if;
Initialize_Scanner (Types.No_Unit, Source_Index);
if Name_From_Path = No_Name then
-- The project file name is not correct (no or bad extension,
-- or not following Ada identifier's syntax).
Error_Msg_Name_1 := Canonical_Path_Name;
Error_Msg ("?{ is not a valid path name for a project file",
Token_Ptr);
end if;
if Current_Verbosity >= Medium then
Write_Str ("Parsing """);
Write_Str (Path_Name);
Write_Char ('"');
Write_Eol;
end if;
Project_Directory := Immediate_Directory_Of (Canonical_Path_Name);
Project := Default_Project_Node (Of_Kind => N_Project);
Set_Directory_Of (Project, Project_Directory);
Set_Name_Of (Project, Simple_File_Name_Of (Canonical_Path_Name));
Set_Path_Name_Of (Project, Canonical_Path_Name);
Set_Location_Of (Project, Token_Ptr);
-- Is there any imported project?
declare
First_With_Clause : Project_Node_Id := Empty_Node;
begin
Parse_Context_Clause (Context_Clause => First_With_Clause,
Project_Directory => Project_Directory);
Set_First_With_Clause_Of (Project, First_With_Clause);
end;
Expect (Tok_Project, "project");
-- Mark location of PROJECT token if present
if Token = Tok_Project then
Set_Location_Of (Project, Token_Ptr);
Scan; -- scan past project
end if;
Expect (Tok_Identifier, "identifier");
if Token = Tok_Identifier then
Set_Name_Of (Project, Token_Name);
Get_Name_String (Token_Name);
Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
declare
Expected_Name : constant Name_Id := Name_Find;
begin
if Name_From_Path /= No_Name
and then Expected_Name /= Name_From_Path
then
-- The project name is not the one that was expected from
-- the file name. Report a warning.
Error_Msg_Name_1 := Expected_Name;
Error_Msg ("?file name does not match unit name, " &
"should be `{" & Project_File_Extension & "`",
Token_Ptr);
end if;
end;
declare
Project_Name : Name_Id :=
Tree_Private_Part.Projects_Htable.Get_First.Name;
begin
-- Check if we already have a project with this name
while Project_Name /= No_Name
and then Project_Name /= Token_Name
loop
Project_Name := Tree_Private_Part.Projects_Htable.Get_Next.Name;
end loop;
if Project_Name /= No_Name then
Error_Msg ("duplicate project name", Token_Ptr);
else
Tree_Private_Part.Projects_Htable.Set
(K => Token_Name,
E => (Name => Token_Name,
Node => Project,
Modified => Modified));
end if;
end;
Scan; -- scan past the project name
end if;
if Token = Tok_Extends then
-- We are extending another project
Scan; -- scan past EXTENDS
Expect (Tok_String_Literal, "literal string");
if Token = Tok_String_Literal then
Set_Modified_Project_Path_Of (Project, Strval (Token_Node));
String_To_Name_Buffer (Modified_Project_Path_Of (Project));
declare
Original_Path_Name : constant String :=
Name_Buffer (1 .. Name_Len);
Modified_Project_Path_Name : constant String :=
Project_Path_Name_Of
(Original_Path_Name,
Get_Name_String
(Project_Directory));
begin
if Modified_Project_Path_Name = "" then
-- We could not find the project file to modify
Name_Len := Original_Path_Name'Length;
Name_Buffer (1 .. Name_Len) := Original_Path_Name;
Error_Msg_Name_1 := Name_Find;
Error_Msg ("unknown project file: {", Token_Ptr);
else
Parse_Single_Project
(Project => Modified_Project,
Path_Name => Modified_Project_Path_Name,
Modified => True);
end if;
end;
Scan; -- scan past the modified project path
end if;
end if;
Expect (Tok_Is, "is");
declare
Project_Declaration : Project_Node_Id := Empty_Node;
begin
-- No need to Scan past IS, Prj.Dect.Parse will do it.
Prj.Dect.Parse
(Declarations => Project_Declaration,
Current_Project => Project,
Extends => Modified_Project);
Set_Project_Declaration_Of (Project, Project_Declaration);
end;
Expect (Tok_End, "end");
-- Skip END if present
if Token = Tok_End then
Scan;
end if;
Expect (Tok_Identifier, "identifier");
if Token = Tok_Identifier then
-- We check if this is the project name
if To_Lower (Get_Name_String (Token_Name)) /=
Get_Name_String (Name_Of (Project))
then
Error_Msg ("Expected """ &
Get_Name_String (Name_Of (Project)) & """",
Token_Ptr);
end if;
end if;
if Token /= Tok_Semicolon then
Scan;
end if;
Expect (Tok_Semicolon, ";");
-- Restore the scan state, in case we are not the main project
Restore_Project_Scan_State (Project_Scan_State);
Project_Stack.Decrement_Last;
end Parse_Single_Project;
------------------
-- Path_Name_Of --
------------------
function Path_Name_Of
(File_Name : String;
Directory : String)
return String
is
Result : String_Access;
begin
Result := Locate_Regular_File (File_Name => File_Name,
Path => Directory);
if Result = null then
return "";
else
Canonical_Case_File_Name (Result.all);
return Result.all;
end if;
end Path_Name_Of;
-----------------------
-- Project_Name_From --
-----------------------
function Project_Name_From (Path_Name : String) return Name_Id is
Canonical : String (1 .. Path_Name'Length) := Path_Name;
First : Natural := Canonical'Last;
Last : Positive := First;
begin
if First = 0 then
return No_Name;
end if;
Canonical_Case_File_Name (Canonical);
while First > 0
and then
Canonical (First) /= '.'
loop
First := First - 1;
end loop;
if Canonical (First) = '.' then
if Canonical (First .. Last) = Project_File_Extension
and then First /= 1
then
First := First - 1;
Last := First;
while First > 0
and then Canonical (First) /= '/'
and then Canonical (First) /= Dir_Sep
loop
First := First - 1;
end loop;
else
return No_Name;
end if;
else
return No_Name;
end if;
if Canonical (First) = '/'
or else Canonical (First) = Dir_Sep
then
First := First + 1;
end if;
Name_Len := Last - First + 1;
Name_Buffer (1 .. Name_Len) := To_Lower (Canonical (First .. Last));
if not Is_Letter (Name_Buffer (1)) then
return No_Name;
else
for Index in 2 .. Name_Len - 1 loop
if Name_Buffer (Index) = '_' then
if Name_Buffer (Index + 1) = '_' then
return No_Name;
end if;
elsif not Is_Alphanumeric (Name_Buffer (Index)) then
return No_Name;
end if;
end loop;
if not Is_Alphanumeric (Name_Buffer (Name_Len)) then
return No_Name;
else
return Name_Find;
end if;
end if;
end Project_Name_From;
--------------------------
-- Project_Path_Name_Of --
--------------------------
function Project_Path_Name_Of
(Project_File_Name : String;
Directory : String)
return String
is
Result : String_Access;
begin
-- First we try <file_name>.<extension>
if Current_Verbosity = High then
Write_Str ("Project_Path_Name_Of (""");
Write_Str (Project_File_Name);
Write_Str (""", """);
Write_Str (Directory);
Write_Line (""");");
Write_Str (" Trying ");
Write_Str (Project_File_Name);
Write_Line (Project_File_Extension);
end if;
Result :=
Locate_Regular_File
(File_Name => Project_File_Name & Project_File_Extension,
Path => Project_Path.all);
-- Then we try <file_name>
if Result = null then
if Current_Verbosity = High then
Write_Str (" Trying ");
Write_Line (Project_File_Name);
end if;
Result :=
Locate_Regular_File
(File_Name => Project_File_Name,
Path => Project_Path.all);
-- The we try <directory>/<file_name>.<extension>
if Result = null then
if Current_Verbosity = High then
Write_Str (" Trying ");
Write_Str (Directory);
Write_Str (Project_File_Name);
Write_Line (Project_File_Extension);
end if;
Result :=
Locate_Regular_File
(File_Name => Directory & Project_File_Name &
Project_File_Extension,
Path => Project_Path.all);
-- Then we try <directory>/<file_name>
if Result = null then
if Current_Verbosity = High then
Write_Str (" Trying ");
Write_Str (Directory);
Write_Line (Project_File_Name);
end if;
Result :=
Locate_Regular_File
(File_Name => Directory & Project_File_Name,
Path => Project_Path.all);
end if;
end if;
end if;
-- If we cannot find the project file, we return an empty string
if Result = null then
return "";
else
declare
Final_Result : String
:= GNAT.OS_Lib.Normalize_Pathname (Result.all);
begin
Free (Result);
Canonical_Case_File_Name (Final_Result);
return Final_Result;
end;
end if;
end Project_Path_Name_Of;
-------------------------
-- Simple_File_Name_Of --
-------------------------
function Simple_File_Name_Of (Path_Name : Name_Id) return Name_Id is
begin
Get_Name_String (Path_Name);
for Index in reverse 1 .. Name_Len loop
if Name_Buffer (Index) = '/'
or else Name_Buffer (Index) = Dir_Sep
then
exit when Index = Name_Len;
Name_Buffer (1 .. Name_Len - Index) :=
Name_Buffer (Index + 1 .. Name_Len);
Name_Len := Name_Len - Index;
return Name_Find;
end if;
end loop;
return No_Name;
end Simple_File_Name_Of;
begin
Canonical_Case_File_Name (Project_File_Extension);
if Prj_Path.all = "" then
Project_Path := new String'(".");
else
Project_Path := new String'("." & Path_Separator & Prj_Path.all);
end if;
end Prj.Part;
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