------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- L I B --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2020, 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. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- 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 --
-- . --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
pragma Style_Checks (All_Checks);
-- Subprogram ordering not enforced in this unit
-- (because of some logical groupings).
with Atree; use Atree;
with Csets; use Csets;
with Einfo; use Einfo;
with Nlists; use Nlists;
with Opt; use Opt;
with Output; use Output;
with Sinfo; use Sinfo;
with Sinput; use Sinput;
with Stand; use Stand;
with Stringt; use Stringt;
with Uname; use Uname;
with Widechar; use Widechar;
package body Lib is
Switch_Storing_Enabled : Boolean := True;
-- Controlled by Enable_Switch_Storing/Disable_Switch_Storing
-----------------------
-- Local Subprograms --
-----------------------
type SEU_Result is (
Yes_Before, -- S1 is in same extended unit as S2 and appears before it
Yes_Same, -- S1 is in same extended unit as S2, Slocs are the same
Yes_After, -- S1 is in same extended unit as S2, and appears after it
No); -- S2 is not in same extended unit as S2
function Check_Same_Extended_Unit
(S1 : Source_Ptr;
S2 : Source_Ptr) return SEU_Result;
-- Used by In_Same_Extended_Unit and Earlier_In_Extended_Unit. Returns
-- value as described above.
function Get_Code_Or_Source_Unit
(S : Source_Ptr;
Unwind_Instances : Boolean;
Unwind_Subunits : Boolean) return Unit_Number_Type;
-- Common processing for routines Get_Code_Unit, Get_Source_Unit, and
-- Get_Top_Level_Code_Unit. Unwind_Instances is True when the unit for the
-- top-level instantiation should be returned instead of the unit for the
-- template, in the case of an instantiation. Unwind_Subunits is True when
-- the corresponding top-level unit should be returned instead of a
-- subunit, in the case of a subunit.
--------------------------------------------
-- Access Functions for Unit Table Fields --
--------------------------------------------
function Cunit (U : Unit_Number_Type) return Node_Id is
begin
return Units.Table (U).Cunit;
end Cunit;
function Cunit_Entity (U : Unit_Number_Type) return Entity_Id is
begin
return Units.Table (U).Cunit_Entity;
end Cunit_Entity;
function Dependency_Num (U : Unit_Number_Type) return Nat is
begin
return Units.Table (U).Dependency_Num;
end Dependency_Num;
function Dynamic_Elab (U : Unit_Number_Type) return Boolean is
begin
return Units.Table (U).Dynamic_Elab;
end Dynamic_Elab;
function Error_Location (U : Unit_Number_Type) return Source_Ptr is
begin
return Units.Table (U).Error_Location;
end Error_Location;
function Expected_Unit (U : Unit_Number_Type) return Unit_Name_Type is
begin
return Units.Table (U).Expected_Unit;
end Expected_Unit;
function Fatal_Error (U : Unit_Number_Type) return Fatal_Type is
begin
return Units.Table (U).Fatal_Error;
end Fatal_Error;
function Generate_Code (U : Unit_Number_Type) return Boolean is
begin
return Units.Table (U).Generate_Code;
end Generate_Code;
function Has_RACW (U : Unit_Number_Type) return Boolean is
begin
return Units.Table (U).Has_RACW;
end Has_RACW;
function Is_Predefined_Renaming (U : Unit_Number_Type) return Boolean is
begin
return Units.Table (U).Is_Predefined_Renaming;
end Is_Predefined_Renaming;
function Is_Internal_Unit (U : Unit_Number_Type) return Boolean is
begin
return Units.Table (U).Is_Internal_Unit;
end Is_Internal_Unit;
function Is_Predefined_Unit (U : Unit_Number_Type) return Boolean is
begin
return Units.Table (U).Is_Predefined_Unit;
end Is_Predefined_Unit;
function Ident_String (U : Unit_Number_Type) return Node_Id is
begin
return Units.Table (U).Ident_String;
end Ident_String;
function Loading (U : Unit_Number_Type) return Boolean is
begin
return Units.Table (U).Loading;
end Loading;
function Main_CPU (U : Unit_Number_Type) return Int is
begin
return Units.Table (U).Main_CPU;
end Main_CPU;
function Main_Priority (U : Unit_Number_Type) return Int is
begin
return Units.Table (U).Main_Priority;
end Main_Priority;
function Munit_Index (U : Unit_Number_Type) return Nat is
begin
return Units.Table (U).Munit_Index;
end Munit_Index;
function No_Elab_Code_All (U : Unit_Number_Type) return Boolean is
begin
return Units.Table (U).No_Elab_Code_All;
end No_Elab_Code_All;
function OA_Setting (U : Unit_Number_Type) return Character is
begin
return Units.Table (U).OA_Setting;
end OA_Setting;
function Primary_Stack_Count (U : Unit_Number_Type) return Int is
begin
return Units.Table (U).Primary_Stack_Count;
end Primary_Stack_Count;
function Sec_Stack_Count (U : Unit_Number_Type) return Int is
begin
return Units.Table (U).Sec_Stack_Count;
end Sec_Stack_Count;
function Source_Index (U : Unit_Number_Type) return Source_File_Index is
begin
return Units.Table (U).Source_Index;
end Source_Index;
function Unit_File_Name (U : Unit_Number_Type) return File_Name_Type is
begin
return Units.Table (U).Unit_File_Name;
end Unit_File_Name;
function Unit_Name (U : Unit_Number_Type) return Unit_Name_Type is
begin
return Units.Table (U).Unit_Name;
end Unit_Name;
------------------------------------------
-- Subprograms to Set Unit Table Fields --
------------------------------------------
procedure Set_Cunit (U : Unit_Number_Type; N : Node_Id) is
begin
Units.Table (U).Cunit := N;
end Set_Cunit;
procedure Set_Cunit_Entity (U : Unit_Number_Type; E : Entity_Id) is
begin
Units.Table (U).Cunit_Entity := E;
Set_Is_Compilation_Unit (E);
end Set_Cunit_Entity;
procedure Set_Dynamic_Elab (U : Unit_Number_Type; B : Boolean := True) is
begin
Units.Table (U).Dynamic_Elab := B;
end Set_Dynamic_Elab;
procedure Set_Error_Location (U : Unit_Number_Type; W : Source_Ptr) is
begin
Units.Table (U).Error_Location := W;
end Set_Error_Location;
procedure Set_Fatal_Error (U : Unit_Number_Type; V : Fatal_Type) is
begin
Units.Table (U).Fatal_Error := V;
end Set_Fatal_Error;
procedure Set_Generate_Code (U : Unit_Number_Type; B : Boolean := True) is
begin
Units.Table (U).Generate_Code := B;
end Set_Generate_Code;
procedure Set_Has_RACW (U : Unit_Number_Type; B : Boolean := True) is
begin
Units.Table (U).Has_RACW := B;
end Set_Has_RACW;
procedure Set_Ident_String (U : Unit_Number_Type; N : Node_Id) is
begin
Units.Table (U).Ident_String := N;
end Set_Ident_String;
procedure Set_Loading (U : Unit_Number_Type; B : Boolean := True) is
begin
Units.Table (U).Loading := B;
end Set_Loading;
procedure Set_Main_CPU (U : Unit_Number_Type; P : Int) is
begin
Units.Table (U).Main_CPU := P;
end Set_Main_CPU;
procedure Set_Main_Priority (U : Unit_Number_Type; P : Int) is
begin
Units.Table (U).Main_Priority := P;
end Set_Main_Priority;
procedure Set_No_Elab_Code_All
(U : Unit_Number_Type;
B : Boolean := True)
is
begin
Units.Table (U).No_Elab_Code_All := B;
end Set_No_Elab_Code_All;
procedure Set_OA_Setting (U : Unit_Number_Type; C : Character) is
begin
Units.Table (U).OA_Setting := C;
end Set_OA_Setting;
procedure Set_Unit_Name (U : Unit_Number_Type; N : Unit_Name_Type) is
Old_N : constant Unit_Name_Type := Units.Table (U).Unit_Name;
begin
-- First unregister the old name, if any
if Old_N /= No_Unit_Name and then Unit_Names.Get (Old_N) = U then
Unit_Names.Set (Old_N, No_Unit);
end if;
-- Then set the new name
Units.Table (U).Unit_Name := N;
-- Finally register the new name
if Unit_Names.Get (N) = No_Unit then
Unit_Names.Set (N, U);
end if;
end Set_Unit_Name;
------------------------------
-- Check_Same_Extended_Unit --
------------------------------
function Check_Same_Extended_Unit
(S1 : Source_Ptr;
S2 : Source_Ptr) return SEU_Result
is
Max_Iterations : constant Nat := Maximum_Instantiations * 2;
-- Limit to prevent a potential infinite loop
Counter : Nat := 0;
Depth1 : Nat;
Depth2 : Nat;
Inst1 : Source_Ptr;
Inst2 : Source_Ptr;
Sind1 : Source_File_Index;
Sind2 : Source_File_Index;
Sloc1 : Source_Ptr;
Sloc2 : Source_Ptr;
Unit1 : Node_Id;
Unit2 : Node_Id;
Unum1 : Unit_Number_Type;
Unum2 : Unit_Number_Type;
begin
if S1 = No_Location or else S2 = No_Location then
return No;
elsif S1 = Standard_Location then
if S2 = Standard_Location then
return Yes_Same;
else
return No;
end if;
elsif S2 = Standard_Location then
return No;
end if;
Sloc1 := S1;
Sloc2 := S2;
Unum1 := Get_Source_Unit (Sloc1);
Unum2 := Get_Source_Unit (Sloc2);
loop
-- Step 1: Check whether the two locations are in the same source
-- file.
Sind1 := Get_Source_File_Index (Sloc1);
Sind2 := Get_Source_File_Index (Sloc2);
if Sind1 = Sind2 then
if Sloc1 < Sloc2 then
return Yes_Before;
elsif Sloc1 > Sloc2 then
return Yes_After;
else
return Yes_Same;
end if;
end if;
-- Step 2: Check subunits. If a subunit is instantiated, follow the
-- instantiation chain rather than the stub chain.
Unit1 := Unit (Cunit (Unum1));
Unit2 := Unit (Cunit (Unum2));
Inst1 := Instantiation (Sind1);
Inst2 := Instantiation (Sind2);
if Nkind (Unit1) = N_Subunit
and then Present (Corresponding_Stub (Unit1))
and then Inst1 = No_Location
then
if Nkind (Unit2) = N_Subunit
and then Present (Corresponding_Stub (Unit2))
and then Inst2 = No_Location
then
-- Both locations refer to subunits which may have a common
-- ancestor. If they do, the deeper subunit must have a longer
-- unit name. Replace the deeper one with its corresponding
-- stub in order to find the nearest ancestor.
if Length_Of_Name (Unit_Name (Unum1)) <
Length_Of_Name (Unit_Name (Unum2))
then
Sloc2 := Sloc (Corresponding_Stub (Unit2));
Unum2 := Get_Source_Unit (Sloc2);
goto Continue;
else
Sloc1 := Sloc (Corresponding_Stub (Unit1));
Unum1 := Get_Source_Unit (Sloc1);
goto Continue;
end if;
-- Sloc1 in subunit, Sloc2 not
else
Sloc1 := Sloc (Corresponding_Stub (Unit1));
Unum1 := Get_Source_Unit (Sloc1);
goto Continue;
end if;
-- Sloc2 in subunit, Sloc1 not
elsif Nkind (Unit2) = N_Subunit
and then Present (Corresponding_Stub (Unit2))
and then Inst2 = No_Location
then
Sloc2 := Sloc (Corresponding_Stub (Unit2));
Unum2 := Get_Source_Unit (Sloc2);
goto Continue;
end if;
-- Step 3: Check instances. The two locations may yield a common
-- ancestor.
if Inst1 /= No_Location then
if Inst2 /= No_Location then
-- Both locations denote instantiations
Depth1 := Instantiation_Depth (Sloc1);
Depth2 := Instantiation_Depth (Sloc2);
if Depth1 < Depth2 then
Sloc2 := Inst2;
Unum2 := Get_Source_Unit (Sloc2);
goto Continue;
elsif Depth1 > Depth2 then
Sloc1 := Inst1;
Unum1 := Get_Source_Unit (Sloc1);
goto Continue;
else
Sloc1 := Inst1;
Sloc2 := Inst2;
Unum1 := Get_Source_Unit (Sloc1);
Unum2 := Get_Source_Unit (Sloc2);
goto Continue;
end if;
-- Sloc1 is an instantiation
else
Sloc1 := Inst1;
Unum1 := Get_Source_Unit (Sloc1);
goto Continue;
end if;
-- Sloc2 is an instantiation
elsif Inst2 /= No_Location then
Sloc2 := Inst2;
Unum2 := Get_Source_Unit (Sloc2);
goto Continue;
end if;
-- Step 4: One location in the spec, the other in the corresponding
-- body of the same unit. The location in the spec is considered
-- earlier.
if Nkind (Unit1) = N_Subprogram_Body
or else
Nkind (Unit1) = N_Package_Body
then
if Library_Unit (Cunit (Unum1)) = Cunit (Unum2) then
return Yes_After;
end if;
elsif Nkind (Unit2) = N_Subprogram_Body
or else
Nkind (Unit2) = N_Package_Body
then
if Library_Unit (Cunit (Unum2)) = Cunit (Unum1) then
return Yes_Before;
end if;
end if;
-- At this point it is certain that the two locations denote two
-- entirely separate units.
return No;
<>
Counter := Counter + 1;
-- Prevent looping forever
if Counter > Max_Iterations then
-- ??? Not quite right, but return a value to be able to generate
-- SCIL files and hope for the best.
if CodePeer_Mode then
return No;
else
raise Program_Error;
end if;
end if;
end loop;
end Check_Same_Extended_Unit;
-------------------------------
-- Compilation_Switches_Last --
-------------------------------
function Compilation_Switches_Last return Nat is
begin
return Compilation_Switches.Last;
end Compilation_Switches_Last;
---------------------------
-- Enable_Switch_Storing --
---------------------------
procedure Enable_Switch_Storing is
begin
Switch_Storing_Enabled := True;
end Enable_Switch_Storing;
----------------------------
-- Disable_Switch_Storing --
----------------------------
procedure Disable_Switch_Storing is
begin
Switch_Storing_Enabled := False;
end Disable_Switch_Storing;
------------------------------
-- Earlier_In_Extended_Unit --
------------------------------
function Earlier_In_Extended_Unit
(S1 : Source_Ptr;
S2 : Source_Ptr) return Boolean
is
begin
return Check_Same_Extended_Unit (S1, S2) = Yes_Before;
end Earlier_In_Extended_Unit;
function Earlier_In_Extended_Unit
(N1 : Node_Or_Entity_Id;
N2 : Node_Or_Entity_Id) return Boolean
is
begin
return Earlier_In_Extended_Unit (Sloc (N1), Sloc (N2));
end Earlier_In_Extended_Unit;
-----------------------
-- Exact_Source_Name --
-----------------------
function Exact_Source_Name (Loc : Source_Ptr) return String is
U : constant Unit_Number_Type := Get_Source_Unit (Loc);
Buf : constant Source_Buffer_Ptr := Source_Text (Source_Index (U));
Orig : constant Source_Ptr := Original_Location (Loc);
P : Source_Ptr;
WC : Char_Code;
Err : Boolean;
pragma Warnings (Off, WC);
pragma Warnings (Off, Err);
begin
-- Entity is character literal
if Buf (Orig) = ''' then
return String (Buf (Orig .. Orig + 2));
-- Entity is operator symbol
elsif Buf (Orig) = '"' or else Buf (Orig) = '%' then
P := Orig;
loop
P := P + 1;
exit when Buf (P) = Buf (Orig);
end loop;
return String (Buf (Orig .. P));
-- Entity is identifier
else
P := Orig;
loop
if Is_Start_Of_Wide_Char (Buf, P) then
Scan_Wide (Buf, P, WC, Err);
elsif not Identifier_Char (Buf (P)) then
exit;
else
P := P + 1;
end if;
end loop;
-- Write out the identifier by copying the exact source characters
-- used in its declaration. Note that this means wide characters will
-- be in their original encoded form.
return String (Buf (Orig .. P - 1));
end if;
end Exact_Source_Name;
----------------------------
-- Entity_Is_In_Main_Unit --
----------------------------
function Entity_Is_In_Main_Unit (E : Entity_Id) return Boolean is
S : Entity_Id;
begin
S := Scope (E);
while S /= Standard_Standard loop
if S = Main_Unit_Entity then
return True;
elsif Ekind (S) = E_Package and then Is_Child_Unit (S) then
return False;
else
S := Scope (S);
end if;
end loop;
return False;
end Entity_Is_In_Main_Unit;
--------------------------
-- Generic_May_Lack_ALI --
--------------------------
function Generic_May_Lack_ALI (Unum : Unit_Number_Type) return Boolean is
begin
-- We allow internal generic units to be used without having a
-- corresponding ALI files to help bootstrapping with older compilers
-- that did not support generating ALIs for such generics. It is safe
-- to do so because the only thing the generated code would contain
-- is the elaboration boolean, and we are careful to elaborate all
-- predefined units first anyway.
return Is_Internal_Unit (Unum);
end Generic_May_Lack_ALI;
-----------------------------
-- Get_Code_Or_Source_Unit --
-----------------------------
function Get_Code_Or_Source_Unit
(S : Source_Ptr;
Unwind_Instances : Boolean;
Unwind_Subunits : Boolean) return Unit_Number_Type
is
begin
-- Search table unless we have No_Location, which can happen if the
-- relevant location has not been set yet. Happens for example when
-- we obtain Sloc (Cunit (Main_Unit)) before it is set.
if S /= No_Location then
declare
Source_File : Source_File_Index;
Source_Unit : Unit_Number_Type;
Unit_Node : Node_Id;
begin
Source_File := Get_Source_File_Index (S);
if Unwind_Instances then
while Template (Source_File) > No_Source_File loop
Source_File := Template (Source_File);
end loop;
end if;
Source_Unit := Unit (Source_File);
if Unwind_Subunits then
Unit_Node := Unit (Cunit (Source_Unit));
while Nkind (Unit_Node) = N_Subunit
and then Present (Corresponding_Stub (Unit_Node))
loop
Source_Unit :=
Get_Code_Or_Source_Unit
(Sloc (Corresponding_Stub (Unit_Node)),
Unwind_Instances => Unwind_Instances,
Unwind_Subunits => Unwind_Subunits);
Unit_Node := Unit (Cunit (Source_Unit));
end loop;
end if;
if Source_Unit /= No_Unit then
return Source_Unit;
end if;
end;
end if;
-- If S was No_Location, or was not in the table, we must be in the main
-- source unit (and the value has not been placed in the table yet),
-- or in one of the configuration pragma files.
return Main_Unit;
end Get_Code_Or_Source_Unit;
-------------------
-- Get_Code_Unit --
-------------------
function Get_Code_Unit (S : Source_Ptr) return Unit_Number_Type is
begin
return
Get_Code_Or_Source_Unit
(Top_Level_Location (S),
Unwind_Instances => False,
Unwind_Subunits => False);
end Get_Code_Unit;
function Get_Code_Unit (N : Node_Or_Entity_Id) return Unit_Number_Type is
begin
return Get_Code_Unit (Sloc (N));
end Get_Code_Unit;
----------------------------
-- Get_Compilation_Switch --
----------------------------
function Get_Compilation_Switch (N : Pos) return String_Ptr is
begin
if N <= Compilation_Switches.Last then
return Compilation_Switches.Table (N);
else
return null;
end if;
end Get_Compilation_Switch;
----------------------------------
-- Get_Cunit_Entity_Unit_Number --
----------------------------------
function Get_Cunit_Entity_Unit_Number
(E : Entity_Id) return Unit_Number_Type
is
begin
for U in Units.First .. Units.Last loop
if Cunit_Entity (U) = E then
return U;
end if;
end loop;
-- If not in the table, must be the main source unit, and we just
-- have not got it put into the table yet.
return Main_Unit;
end Get_Cunit_Entity_Unit_Number;
---------------------------
-- Get_Cunit_Unit_Number --
---------------------------
function Get_Cunit_Unit_Number (N : Node_Id) return Unit_Number_Type is
begin
for U in Units.First .. Units.Last loop
if Cunit (U) = N then
return U;
end if;
end loop;
-- If not in the table, must be a spec created for a main unit that is a
-- child subprogram body which we have not inserted into the table yet.
if N = Library_Unit (Cunit (Main_Unit)) then
return Main_Unit;
-- If it is anything else, something is seriously wrong, and we really
-- don't want to proceed, even if assertions are off, so we explicitly
-- raise an exception in this case to terminate compilation.
else
raise Program_Error;
end if;
end Get_Cunit_Unit_Number;
---------------------
-- Get_Source_Unit --
---------------------
function Get_Source_Unit (S : Source_Ptr) return Unit_Number_Type is
begin
return
Get_Code_Or_Source_Unit
(S => S,
Unwind_Instances => True,
Unwind_Subunits => False);
end Get_Source_Unit;
function Get_Source_Unit (N : Node_Or_Entity_Id) return Unit_Number_Type is
begin
return Get_Source_Unit (Sloc (N));
end Get_Source_Unit;
-----------------------------
-- Get_Top_Level_Code_Unit --
-----------------------------
function Get_Top_Level_Code_Unit (S : Source_Ptr) return Unit_Number_Type is
begin
return
Get_Code_Or_Source_Unit
(Top_Level_Location (S),
Unwind_Instances => False,
Unwind_Subunits => True);
end Get_Top_Level_Code_Unit;
function Get_Top_Level_Code_Unit
(N : Node_Or_Entity_Id) return Unit_Number_Type is
begin
return Get_Top_Level_Code_Unit (Sloc (N));
end Get_Top_Level_Code_Unit;
--------------------------------
-- In_Extended_Main_Code_Unit --
--------------------------------
function In_Extended_Main_Code_Unit
(N : Node_Or_Entity_Id) return Boolean
is
begin
if Sloc (N) = Standard_Location then
return False;
elsif Sloc (N) = No_Location then
return False;
-- Special case Itypes to test the Sloc of the associated node. The
-- reason we do this is for possible calls from gigi after -gnatD
-- processing is complete in sprint. This processing updates the
-- sloc fields of all nodes in the tree, but itypes are not in the
-- tree so their slocs do not get updated.
elsif Nkind (N) = N_Defining_Identifier
and then Is_Itype (N)
then
return In_Extended_Main_Code_Unit (Associated_Node_For_Itype (N));
-- Otherwise see if we are in the main unit
elsif Get_Code_Unit (Sloc (N)) = Get_Code_Unit (Cunit (Main_Unit)) then
return True;
-- Node may be in spec (or subunit etc) of main unit
else
return In_Same_Extended_Unit (N, Cunit (Main_Unit));
end if;
end In_Extended_Main_Code_Unit;
function In_Extended_Main_Code_Unit (Loc : Source_Ptr) return Boolean is
begin
if Loc = Standard_Location then
return False;
elsif Loc = No_Location then
return False;
-- Otherwise see if we are in the main unit
elsif Get_Code_Unit (Loc) = Get_Code_Unit (Cunit (Main_Unit)) then
return True;
-- Location may be in spec (or subunit etc) of main unit
else
return In_Same_Extended_Unit (Loc, Sloc (Cunit (Main_Unit)));
end if;
end In_Extended_Main_Code_Unit;
----------------------------------
-- In_Extended_Main_Source_Unit --
----------------------------------
function In_Extended_Main_Source_Unit
(N : Node_Or_Entity_Id) return Boolean
is
Nloc : constant Source_Ptr := Sloc (N);
Mloc : constant Source_Ptr := Sloc (Cunit (Main_Unit));
begin
-- If parsing, then use the global flag to indicate result
if Compiler_State = Parsing then
return Parsing_Main_Extended_Source;
-- Special value cases
elsif Nloc = Standard_Location then
return False;
elsif Nloc = No_Location then
return False;
-- Special case Itypes to test the Sloc of the associated node. The
-- reason we do this is for possible calls from gigi after -gnatD
-- processing is complete in sprint. This processing updates the
-- sloc fields of all nodes in the tree, but itypes are not in the
-- tree so their slocs do not get updated.
elsif Nkind (N) = N_Defining_Identifier
and then Is_Itype (N)
then
return In_Extended_Main_Source_Unit (Associated_Node_For_Itype (N));
-- Otherwise compare original locations to see if in same unit
else
return
In_Same_Extended_Unit
(Original_Location (Nloc), Original_Location (Mloc));
end if;
end In_Extended_Main_Source_Unit;
function In_Extended_Main_Source_Unit
(Loc : Source_Ptr) return Boolean
is
Mloc : constant Source_Ptr := Sloc (Cunit (Main_Unit));
begin
-- If parsing, then use the global flag to indicate result
if Compiler_State = Parsing then
return Parsing_Main_Extended_Source;
-- Special value cases
elsif Loc = Standard_Location then
return False;
elsif Loc = No_Location then
return False;
-- Otherwise compare original locations to see if in same unit
else
return
In_Same_Extended_Unit
(Original_Location (Loc), Original_Location (Mloc));
end if;
end In_Extended_Main_Source_Unit;
----------------------
-- In_Internal_Unit --
----------------------
function In_Internal_Unit (N : Node_Or_Entity_Id) return Boolean is
begin
return In_Internal_Unit (Sloc (N));
end In_Internal_Unit;
function In_Internal_Unit (S : Source_Ptr) return Boolean is
Unit : constant Unit_Number_Type := Get_Source_Unit (S);
begin
return Is_Internal_Unit (Unit);
end In_Internal_Unit;
----------------------------
-- In_Predefined_Renaming --
----------------------------
function In_Predefined_Renaming (N : Node_Or_Entity_Id) return Boolean is
begin
return In_Predefined_Renaming (Sloc (N));
end In_Predefined_Renaming;
function In_Predefined_Renaming (S : Source_Ptr) return Boolean is
Unit : constant Unit_Number_Type := Get_Source_Unit (S);
begin
return Is_Predefined_Renaming (Unit);
end In_Predefined_Renaming;
------------------------
-- In_Predefined_Unit --
------------------------
function In_Predefined_Unit (N : Node_Or_Entity_Id) return Boolean is
begin
return In_Predefined_Unit (Sloc (N));
end In_Predefined_Unit;
function In_Predefined_Unit (S : Source_Ptr) return Boolean is
Unit : constant Unit_Number_Type := Get_Source_Unit (S);
begin
return Is_Predefined_Unit (Unit);
end In_Predefined_Unit;
-----------------------
-- In_Same_Code_Unit --
-----------------------
function In_Same_Code_Unit (N1, N2 : Node_Or_Entity_Id) return Boolean is
S1 : constant Source_Ptr := Sloc (N1);
S2 : constant Source_Ptr := Sloc (N2);
begin
if S1 = No_Location or else S2 = No_Location then
return False;
elsif S1 = Standard_Location then
return S2 = Standard_Location;
elsif S2 = Standard_Location then
return False;
end if;
return Get_Code_Unit (N1) = Get_Code_Unit (N2);
end In_Same_Code_Unit;
---------------------------
-- In_Same_Extended_Unit --
---------------------------
function In_Same_Extended_Unit
(N1, N2 : Node_Or_Entity_Id) return Boolean
is
begin
return Check_Same_Extended_Unit (Sloc (N1), Sloc (N2)) /= No;
end In_Same_Extended_Unit;
function In_Same_Extended_Unit (S1, S2 : Source_Ptr) return Boolean is
begin
return Check_Same_Extended_Unit (S1, S2) /= No;
end In_Same_Extended_Unit;
-------------------------
-- In_Same_Source_Unit --
-------------------------
function In_Same_Source_Unit (N1, N2 : Node_Or_Entity_Id) return Boolean is
S1 : constant Source_Ptr := Sloc (N1);
S2 : constant Source_Ptr := Sloc (N2);
begin
if S1 = No_Location or else S2 = No_Location then
return False;
elsif S1 = Standard_Location then
return S2 = Standard_Location;
elsif S2 = Standard_Location then
return False;
end if;
return Get_Source_Unit (N1) = Get_Source_Unit (N2);
end In_Same_Source_Unit;
-----------------------------------
-- Increment_Primary_Stack_Count --
-----------------------------------
procedure Increment_Primary_Stack_Count (Increment : Int) is
PSC : Int renames Units.Table (Current_Sem_Unit).Primary_Stack_Count;
begin
PSC := PSC + Increment;
end Increment_Primary_Stack_Count;
-------------------------------
-- Increment_Sec_Stack_Count --
-------------------------------
procedure Increment_Sec_Stack_Count (Increment : Int) is
SSC : Int renames Units.Table (Current_Sem_Unit).Sec_Stack_Count;
begin
SSC := SSC + Increment;
end Increment_Sec_Stack_Count;
-----------------------------
-- Increment_Serial_Number --
-----------------------------
function Increment_Serial_Number return Nat is
TSN : Int renames Units.Table (Current_Sem_Unit).Serial_Number;
begin
TSN := TSN + 1;
return TSN;
end Increment_Serial_Number;
----------------------
-- Init_Unit_Name --
----------------------
procedure Init_Unit_Name (U : Unit_Number_Type; N : Unit_Name_Type) is
begin
Units.Table (U).Unit_Name := N;
Unit_Names.Set (N, U);
end Init_Unit_Name;
----------------
-- Initialize --
----------------
procedure Initialize is
begin
Linker_Option_Lines.Init;
Notes.Init;
Load_Stack.Init;
Units.Init;
Compilation_Switches.Init;
end Initialize;
---------------
-- Is_Loaded --
---------------
function Is_Loaded (Uname : Unit_Name_Type) return Boolean is
begin
return Unit_Names.Get (Uname) /= No_Unit;
end Is_Loaded;
---------------
-- Last_Unit --
---------------
function Last_Unit return Unit_Number_Type is
begin
return Units.Last;
end Last_Unit;
----------
-- List --
----------
procedure List (File_Names_Only : Boolean := False) is separate;
----------
-- Lock --
----------
procedure Lock is
begin
Linker_Option_Lines.Release;
Linker_Option_Lines.Locked := True;
Load_Stack.Release;
Load_Stack.Locked := True;
Units.Release;
Units.Locked := True;
end Lock;
---------------
-- Num_Units --
---------------
function Num_Units return Nat is
begin
return Int (Units.Last) - Int (Main_Unit) + 1;
end Num_Units;
-----------------
-- Remove_Unit --
-----------------
procedure Remove_Unit (U : Unit_Number_Type) is
begin
if U = Units.Last then
Unit_Names.Set (Unit_Name (U), No_Unit);
Units.Decrement_Last;
end if;
end Remove_Unit;
----------------------------------
-- Replace_Linker_Option_String --
----------------------------------
procedure Replace_Linker_Option_String
(S : String_Id; Match_String : String)
is
begin
if Match_String'Length > 0 then
for J in 1 .. Linker_Option_Lines.Last loop
String_To_Name_Buffer (Linker_Option_Lines.Table (J).Option);
if Match_String = Name_Buffer (1 .. Match_String'Length) then
Linker_Option_Lines.Table (J).Option := S;
return;
end if;
end loop;
end if;
Store_Linker_Option_String (S);
end Replace_Linker_Option_String;
----------
-- Sort --
----------
procedure Sort (Tbl : in out Unit_Ref_Table) is separate;
------------------------------
-- Store_Compilation_Switch --
------------------------------
procedure Store_Compilation_Switch (Switch : String) is
begin
if Switch_Storing_Enabled then
Compilation_Switches.Increment_Last;
Compilation_Switches.Table (Compilation_Switches.Last) :=
new String'(Switch);
-- Fix up --RTS flag which has been transformed by the gcc driver
-- into -fRTS
if Switch'Last >= Switch'First + 4
and then Switch (Switch'First .. Switch'First + 4) = "-fRTS"
then
Compilation_Switches.Table
(Compilation_Switches.Last) (Switch'First + 1) := '-';
end if;
end if;
end Store_Compilation_Switch;
--------------------------------
-- Store_Linker_Option_String --
--------------------------------
procedure Store_Linker_Option_String (S : String_Id) is
begin
Linker_Option_Lines.Append ((Option => S, Unit => Current_Sem_Unit));
end Store_Linker_Option_String;
----------------
-- Store_Note --
----------------
procedure Store_Note (N : Node_Id) is
Sfile : constant Source_File_Index := Get_Source_File_Index (Sloc (N));
begin
-- Notes for a generic are emitted when processing the template, never
-- in instances.
if In_Extended_Main_Code_Unit (N)
and then Instance (Sfile) = No_Instance_Id
then
Notes.Append (N);
end if;
end Store_Note;
-------------------------------
-- Synchronize_Serial_Number --
-------------------------------
procedure Synchronize_Serial_Number is
TSN : Int renames Units.Table (Current_Sem_Unit).Serial_Number;
begin
TSN := TSN + 1;
end Synchronize_Serial_Number;
--------------------
-- Unit_Name_Hash --
--------------------
function Unit_Name_Hash (Id : Unit_Name_Type) return Unit_Name_Header_Num is
begin
return Unit_Name_Header_Num (Id mod Unit_Name_Table_Size);
end Unit_Name_Hash;
------------
-- Unlock --
------------
procedure Unlock is
begin
Linker_Option_Lines.Locked := False;
Load_Stack.Locked := False;
Units.Locked := False;
end Unlock;
-----------------
-- Version_Get --
-----------------
function Version_Get (U : Unit_Number_Type) return Word_Hex_String is
begin
return Get_Hex_String (Units.Table (U).Version);
end Version_Get;
------------------------
-- Version_Referenced --
------------------------
procedure Version_Referenced (S : String_Id) is
begin
Version_Ref.Append (S);
end Version_Referenced;
---------------------
-- Write_Unit_Info --
---------------------
procedure Write_Unit_Info
(Unit_Num : Unit_Number_Type;
Item : Node_Id;
Prefix : String := "";
Withs : Boolean := False)
is
begin
Write_Str (Prefix);
Write_Unit_Name (Unit_Name (Unit_Num));
Write_Str (", unit ");
Write_Int (Int (Unit_Num));
Write_Str (", ");
Write_Int (Int (Item));
Write_Str ("=");
Write_Str (Node_Kind'Image (Nkind (Item)));
if Is_Rewrite_Substitution (Item) then
Write_Str (", orig = ");
Write_Int (Int (Original_Node (Item)));
Write_Str ("=");
Write_Str (Node_Kind'Image (Nkind (Original_Node (Item))));
end if;
Write_Eol;
-- Skip the rest if we're not supposed to print the withs
if not Withs then
return;
end if;
declare
Context_Item : Node_Id;
begin
Context_Item := First (Context_Items (Cunit (Unit_Num)));
while Present (Context_Item)
and then (Nkind (Context_Item) /= N_With_Clause
or else Limited_Present (Context_Item))
loop
Next (Context_Item);
end loop;
if Present (Context_Item) then
Indent;
Write_Line ("withs:");
Indent;
while Present (Context_Item) loop
if Nkind (Context_Item) = N_With_Clause
and then not Limited_Present (Context_Item)
then
pragma Assert (Present (Library_Unit (Context_Item)));
Write_Unit_Name
(Unit_Name
(Get_Cunit_Unit_Number (Library_Unit (Context_Item))));
if Implicit_With (Context_Item) then
Write_Str (" -- implicit");
end if;
Write_Eol;
end if;
Next (Context_Item);
end loop;
Outdent;
Write_Line ("end withs");
Outdent;
end if;
end;
end Write_Unit_Info;
end Lib;