------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- S I N P U T --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2018, 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);
-- Subprograms not all in alpha order
with Atree; use Atree;
with Debug; use Debug;
with Opt; use Opt;
with Output; use Output;
with Scans; use Scans;
with Tree_IO; use Tree_IO;
with Widechar; use Widechar;
with GNAT.Byte_Order_Mark; use GNAT.Byte_Order_Mark;
with System.Storage_Elements;
with System.Memory;
with System.WCh_Con; use System.WCh_Con;
with Unchecked_Conversion;
with Unchecked_Deallocation;
package body Sinput is
use ASCII, System;
-- Routines to support conversion between types Lines_Table_Ptr,
-- Logical_Lines_Table_Ptr and System.Address.
pragma Warnings (Off);
-- These unchecked conversions are aliasing safe, since they are never
-- used to construct improperly aliased pointer values.
function To_Address is
new Unchecked_Conversion (Lines_Table_Ptr, Address);
function To_Address is
new Unchecked_Conversion (Logical_Lines_Table_Ptr, Address);
function To_Pointer is
new Unchecked_Conversion (Address, Lines_Table_Ptr);
function To_Pointer is
new Unchecked_Conversion (Address, Logical_Lines_Table_Ptr);
pragma Warnings (On);
-----------------------------
-- Source_File_Index_Table --
-----------------------------
-- The Get_Source_File_Index function is called very frequently. Earlier
-- versions cached a single entry, but then reverted to a serial search,
-- and this proved to be a significant source of inefficiency. We then
-- switched to using a table with a start point followed by a serial
-- search. Now we make sure source buffers are on a reasonable boundary
-- (see Types.Source_Align), and we can just use a direct look up in the
-- following table.
-- Note that this array is pretty large, but in most operating systems
-- it will not be allocated in physical memory unless it is actually used.
Source_File_Index_Table :
array (Int range 0 .. 1 + (Int'Last / Source_Align)) of Source_File_Index;
---------------------------
-- Add_Line_Tables_Entry --
---------------------------
procedure Add_Line_Tables_Entry
(S : in out Source_File_Record;
P : Source_Ptr)
is
LL : Physical_Line_Number;
begin
-- Reallocate the lines tables if necessary
-- Note: the reason we do not use the normal Table package
-- mechanism is that we have several of these tables. We could
-- use the new GNAT.Dynamic_Tables package and that would probably
-- be a good idea ???
if S.Last_Source_Line = S.Lines_Table_Max then
Alloc_Line_Tables
(S,
Int (S.Last_Source_Line) *
((100 + Alloc.Lines_Increment) / 100));
if Debug_Flag_D then
Write_Str ("--> Reallocating lines table, size = ");
Write_Int (Int (S.Lines_Table_Max));
Write_Eol;
end if;
end if;
S.Last_Source_Line := S.Last_Source_Line + 1;
LL := S.Last_Source_Line;
S.Lines_Table (LL) := P;
-- Deal with setting new entry in logical lines table if one is
-- present. Note that there is always space (because the call to
-- Alloc_Line_Tables makes sure both tables are the same length),
if S.Logical_Lines_Table /= null then
-- We can always set the entry from the previous one, because
-- the processing for a Source_Reference pragma ensures that
-- at least one entry following the pragma is set up correctly.
S.Logical_Lines_Table (LL) := S.Logical_Lines_Table (LL - 1) + 1;
end if;
end Add_Line_Tables_Entry;
-----------------------
-- Alloc_Line_Tables --
-----------------------
procedure Alloc_Line_Tables
(S : in out Source_File_Record;
New_Max : Nat)
is
subtype size_t is Memory.size_t;
New_Table : Lines_Table_Ptr;
New_Logical_Table : Logical_Lines_Table_Ptr;
New_Size : constant size_t :=
size_t (New_Max * Lines_Table_Type'Component_Size /
Storage_Unit);
begin
if S.Lines_Table = null then
New_Table := To_Pointer (Memory.Alloc (New_Size));
else
New_Table :=
To_Pointer (Memory.Realloc (To_Address (S.Lines_Table), New_Size));
end if;
if New_Table = null then
raise Storage_Error;
else
S.Lines_Table := New_Table;
S.Lines_Table_Max := Physical_Line_Number (New_Max);
end if;
if S.Num_SRef_Pragmas /= 0 then
if S.Logical_Lines_Table = null then
New_Logical_Table := To_Pointer (Memory.Alloc (New_Size));
else
New_Logical_Table := To_Pointer
(Memory.Realloc (To_Address (S.Logical_Lines_Table), New_Size));
end if;
if New_Logical_Table = null then
raise Storage_Error;
else
S.Logical_Lines_Table := New_Logical_Table;
end if;
end if;
end Alloc_Line_Tables;
-----------------
-- Backup_Line --
-----------------
procedure Backup_Line (P : in out Source_Ptr) is
Sindex : constant Source_File_Index := Get_Source_File_Index (P);
Src : constant Source_Buffer_Ptr :=
Source_File.Table (Sindex).Source_Text;
Sfirst : constant Source_Ptr :=
Source_File.Table (Sindex).Source_First;
begin
P := P - 1;
if P = Sfirst then
return;
end if;
if Src (P) = CR then
if Src (P - 1) = LF then
P := P - 1;
end if;
else -- Src (P) = LF
if Src (P - 1) = CR then
P := P - 1;
end if;
end if;
-- Now find first character of the previous line
while P > Sfirst
and then Src (P - 1) /= LF
and then Src (P - 1) /= CR
loop
P := P - 1;
end loop;
end Backup_Line;
---------------------------
-- Build_Location_String --
---------------------------
procedure Build_Location_String
(Buf : in out Bounded_String;
Loc : Source_Ptr)
is
Ptr : Source_Ptr := Loc;
begin
-- Loop through instantiations
loop
Append (Buf, Reference_Name (Get_Source_File_Index (Ptr)));
Append (Buf, ':');
Append (Buf, Nat (Get_Logical_Line_Number (Ptr)));
Ptr := Instantiation_Location (Ptr);
exit when Ptr = No_Location;
Append (Buf, " instantiated at ");
end loop;
end Build_Location_String;
function Build_Location_String (Loc : Source_Ptr) return String is
Buf : Bounded_String;
begin
Build_Location_String (Buf, Loc);
return +Buf;
end Build_Location_String;
-------------------
-- Check_For_BOM --
-------------------
procedure Check_For_BOM is
BOM : BOM_Kind;
Len : Natural;
Tst : String (1 .. 5);
C : Character;
begin
for J in 1 .. 5 loop
C := Source (Scan_Ptr + Source_Ptr (J) - 1);
-- Definitely no BOM if EOF character marks either end of file, or
-- an illegal non-BOM character if not at the end of file.
if C = EOF then
return;
end if;
Tst (J) := C;
end loop;
Read_BOM (Tst, Len, BOM, XML_Support => False);
case BOM is
when UTF8_All =>
Scan_Ptr := Scan_Ptr + Source_Ptr (Len);
First_Non_Blank_Location := Scan_Ptr;
Current_Line_Start := Scan_Ptr;
Wide_Character_Encoding_Method := WCEM_UTF8;
Upper_Half_Encoding := True;
when UTF16_BE
| UTF16_LE
=>
Set_Standard_Error;
Write_Line ("UTF-16 encoding format not recognized");
Set_Standard_Output;
raise Unrecoverable_Error;
when UTF32_BE
| UTF32_LE
=>
Set_Standard_Error;
Write_Line ("UTF-32 encoding format not recognized");
Set_Standard_Output;
raise Unrecoverable_Error;
when Unknown =>
null;
when others =>
raise Program_Error;
end case;
end Check_For_BOM;
-----------------------------
-- Clear_Source_File_Table --
-----------------------------
procedure Free is new Unchecked_Deallocation
(Lines_Table_Type, Lines_Table_Ptr);
procedure Free is new Unchecked_Deallocation
(Logical_Lines_Table_Type, Logical_Lines_Table_Ptr);
procedure Clear_Source_File_Table is
begin
for X in 1 .. Source_File.Last loop
declare
S : Source_File_Record renames Source_File.Table (X);
begin
if S.Instance = No_Instance_Id then
Free_Source_Buffer (S.Source_Text);
else
Free_Dope (S.Source_Text'Address);
S.Source_Text := null;
end if;
Free (S.Lines_Table);
Free (S.Logical_Lines_Table);
end;
end loop;
Source_File.Free;
Sinput.Initialize;
end Clear_Source_File_Table;
---------------------------------
-- Comes_From_Inherited_Pragma --
---------------------------------
function Comes_From_Inherited_Pragma (S : Source_Ptr) return Boolean is
SIE : Source_File_Record renames
Source_File.Table (Get_Source_File_Index (S));
begin
return SIE.Inherited_Pragma;
end Comes_From_Inherited_Pragma;
-----------------------------
-- Comes_From_Inlined_Body --
-----------------------------
function Comes_From_Inlined_Body (S : Source_Ptr) return Boolean is
SIE : Source_File_Record renames
Source_File.Table (Get_Source_File_Index (S));
begin
return SIE.Inlined_Body;
end Comes_From_Inlined_Body;
------------------------
-- Free_Source_Buffer --
------------------------
procedure Free_Source_Buffer (Src : in out Source_Buffer_Ptr) is
-- Unchecked_Deallocation doesn't work for access-to-constant; we need
-- to first Unchecked_Convert to access-to-variable.
function To_Source_Buffer_Ptr_Var is new
Unchecked_Conversion (Source_Buffer_Ptr, Source_Buffer_Ptr_Var);
Temp : Source_Buffer_Ptr_Var := To_Source_Buffer_Ptr_Var (Src);
procedure Free_Ptr is new
Unchecked_Deallocation (Source_Buffer, Source_Buffer_Ptr_Var);
begin
Free_Ptr (Temp);
Src := null;
end Free_Source_Buffer;
-----------------------
-- Get_Column_Number --
-----------------------
function Get_Column_Number (P : Source_Ptr) return Column_Number is
S : Source_Ptr;
C : Column_Number;
Sindex : Source_File_Index;
Src : Source_Buffer_Ptr;
begin
-- If the input source pointer is not a meaningful value then return
-- at once with column number 1. This can happen for a file not found
-- condition for a file loaded indirectly by RTE, and also perhaps on
-- some unknown internal error conditions. In either case we certainly
-- don't want to blow up.
if P < 1 then
return 1;
else
Sindex := Get_Source_File_Index (P);
Src := Source_File.Table (Sindex).Source_Text;
S := Line_Start (P);
C := 1;
while S < P loop
if Src (S) = HT then
C := (C - 1) / 8 * 8 + (8 + 1);
S := S + 1;
-- Deal with wide character case, but don't include brackets
-- notation in this circuit, since we know that this will
-- display unencoded (no one encodes brackets notation).
elsif Src (S) /= '[' and then Is_Start_Of_Wide_Char (Src, S) then
C := C + 1;
Skip_Wide (Src, S);
-- Normal (non-wide) character case or brackets sequence
else
C := C + 1;
S := S + 1;
end if;
end loop;
return C;
end if;
end Get_Column_Number;
-----------------------------
-- Get_Logical_Line_Number --
-----------------------------
function Get_Logical_Line_Number
(P : Source_Ptr) return Logical_Line_Number
is
SFR : Source_File_Record
renames Source_File.Table (Get_Source_File_Index (P));
L : constant Physical_Line_Number := Get_Physical_Line_Number (P);
begin
if SFR.Num_SRef_Pragmas = 0 then
return Logical_Line_Number (L);
else
return SFR.Logical_Lines_Table (L);
end if;
end Get_Logical_Line_Number;
---------------------------------
-- Get_Logical_Line_Number_Img --
---------------------------------
function Get_Logical_Line_Number_Img
(P : Source_Ptr) return String
is
begin
Name_Len := 0;
Add_Nat_To_Name_Buffer (Nat (Get_Logical_Line_Number (P)));
return Name_Buffer (1 .. Name_Len);
end Get_Logical_Line_Number_Img;
------------------------------
-- Get_Physical_Line_Number --
------------------------------
function Get_Physical_Line_Number
(P : Source_Ptr) return Physical_Line_Number
is
Sfile : Source_File_Index;
Table : Lines_Table_Ptr;
Lo : Physical_Line_Number;
Hi : Physical_Line_Number;
Mid : Physical_Line_Number;
Loc : Source_Ptr;
begin
-- If the input source pointer is not a meaningful value then return
-- at once with line number 1. This can happen for a file not found
-- condition for a file loaded indirectly by RTE, and also perhaps on
-- some unknown internal error conditions. In either case we certainly
-- don't want to blow up.
if P < 1 then
return 1;
-- Otherwise we can do the binary search
else
Sfile := Get_Source_File_Index (P);
Loc := P + Source_File.Table (Sfile).Sloc_Adjust;
Table := Source_File.Table (Sfile).Lines_Table;
Lo := 1;
Hi := Source_File.Table (Sfile).Last_Source_Line;
loop
Mid := (Lo + Hi) / 2;
if Loc < Table (Mid) then
Hi := Mid - 1;
else -- Loc >= Table (Mid)
if Mid = Hi or else
Loc < Table (Mid + 1)
then
return Mid;
else
Lo := Mid + 1;
end if;
end if;
end loop;
end if;
end Get_Physical_Line_Number;
---------------------------
-- Get_Source_File_Index --
---------------------------
function Get_Source_File_Index (S : Source_Ptr) return Source_File_Index is
Result : Source_File_Index;
procedure Assertions;
-- Assert various properties of the result
procedure Assertions is
-- ???The old version using zero-origin array indexing without array
-- bounds checks returned 1 (i.e. system.ads) for these special
-- locations, presumably by accident. We are mimicing that here.
Special : constant Boolean :=
S = No_Location
or else S = Standard_Location
or else S = Standard_ASCII_Location
or else S = System_Location;
pragma Assert ((S > No_Location) xor Special);
pragma Assert (Result in Source_File.First .. Source_File.Last);
SFR : Source_File_Record renames Source_File.Table (Result);
begin
-- SFR.Source_Text = null if and only if this is the SFR for a debug
-- output file (*.dg), and that file is under construction. S can be
-- slightly past Source_Last in that case because we haven't updated
-- Source_Last.
if Null_Source_Buffer_Ptr (SFR.Source_Text) then
pragma Assert (S >= SFR.Source_First); null;
else
pragma Assert (SFR.Source_Text'First = SFR.Source_First);
pragma Assert (SFR.Source_Text'Last = SFR.Source_Last);
if not Special then
pragma Assert (S in SFR.Source_First .. SFR.Source_Last);
null;
end if;
end if;
end Assertions;
-- Start of processing for Get_Source_File_Index
begin
if S > No_Location then
Result := Source_File_Index_Table (Int (S) / Source_Align);
else
Result := 1;
end if;
pragma Debug (Assertions);
return Result;
end Get_Source_File_Index;
----------------
-- Initialize --
----------------
procedure Initialize is
begin
Source_gnat_adc := No_Source_File;
Source_File.Init;
Instances.Init;
Instances.Append (No_Location);
pragma Assert (Instances.Last = No_Instance_Id);
end Initialize;
-------------------
-- Instantiation --
-------------------
function Instantiation (S : SFI) return Source_Ptr is
SIE : Source_File_Record renames Source_File.Table (S);
begin
if SIE.Inlined_Body or SIE.Inherited_Pragma then
return SIE.Inlined_Call;
else
return Instances.Table (SIE.Instance);
end if;
end Instantiation;
-------------------------
-- Instantiation_Depth --
-------------------------
function Instantiation_Depth (S : Source_Ptr) return Nat is
Sind : Source_File_Index;
Sval : Source_Ptr;
Depth : Nat;
begin
Sval := S;
Depth := 0;
loop
Sind := Get_Source_File_Index (Sval);
Sval := Instantiation (Sind);
exit when Sval = No_Location;
Depth := Depth + 1;
end loop;
return Depth;
end Instantiation_Depth;
----------------------------
-- Instantiation_Location --
----------------------------
function Instantiation_Location (S : Source_Ptr) return Source_Ptr is
begin
return Instantiation (Get_Source_File_Index (S));
end Instantiation_Location;
--------------------------
-- Iterate_On_Instances --
--------------------------
procedure Iterate_On_Instances is
begin
for J in 1 .. Instances.Last loop
Process (J, Instances.Table (J));
end loop;
end Iterate_On_Instances;
----------------------
-- Last_Source_File --
----------------------
function Last_Source_File return Source_File_Index is
begin
return Source_File.Last;
end Last_Source_File;
----------------
-- Line_Start --
----------------
function Line_Start (P : Source_Ptr) return Source_Ptr is
Sindex : constant Source_File_Index := Get_Source_File_Index (P);
Src : constant Source_Buffer_Ptr :=
Source_File.Table (Sindex).Source_Text;
Sfirst : constant Source_Ptr :=
Source_File.Table (Sindex).Source_First;
S : Source_Ptr;
begin
S := P;
while S > Sfirst
and then Src (S - 1) /= CR
and then Src (S - 1) /= LF
loop
S := S - 1;
end loop;
return S;
end Line_Start;
function Line_Start
(L : Physical_Line_Number;
S : Source_File_Index) return Source_Ptr
is
begin
return Source_File.Table (S).Lines_Table (L);
end Line_Start;
----------
-- Lock --
----------
procedure Lock is
begin
Source_File.Release;
Source_File.Locked := True;
end Lock;
----------------------
-- Num_Source_Files --
----------------------
function Num_Source_Files return Nat is
begin
return Int (Source_File.Last) - Int (Source_File.First) + 1;
end Num_Source_Files;
----------------------
-- Num_Source_Lines --
----------------------
function Num_Source_Lines (S : Source_File_Index) return Nat is
begin
return Nat (Source_File.Table (S).Last_Source_Line);
end Num_Source_Lines;
-----------------------
-- Original_Location --
-----------------------
function Original_Location (S : Source_Ptr) return Source_Ptr is
Sindex : Source_File_Index;
Tindex : Source_File_Index;
begin
if S <= No_Location then
return S;
else
Sindex := Get_Source_File_Index (S);
if Instantiation (Sindex) = No_Location then
return S;
else
Tindex := Template (Sindex);
while Instantiation (Tindex) /= No_Location loop
Tindex := Template (Tindex);
end loop;
return S - Source_First (Sindex) + Source_First (Tindex);
end if;
end if;
end Original_Location;
-------------------------
-- Physical_To_Logical --
-------------------------
function Physical_To_Logical
(Line : Physical_Line_Number;
S : Source_File_Index) return Logical_Line_Number
is
SFR : Source_File_Record renames Source_File.Table (S);
begin
if SFR.Num_SRef_Pragmas = 0 then
return Logical_Line_Number (Line);
else
return SFR.Logical_Lines_Table (Line);
end if;
end Physical_To_Logical;
--------------------------------
-- Register_Source_Ref_Pragma --
--------------------------------
procedure Register_Source_Ref_Pragma
(File_Name : File_Name_Type;
Stripped_File_Name : File_Name_Type;
Mapped_Line : Nat;
Line_After_Pragma : Physical_Line_Number)
is
subtype size_t is Memory.size_t;
SFR : Source_File_Record renames Source_File.Table (Current_Source_File);
ML : Logical_Line_Number;
begin
if File_Name /= No_File then
SFR.Reference_Name := Stripped_File_Name;
SFR.Full_Ref_Name := File_Name;
if not Debug_Generated_Code then
SFR.Debug_Source_Name := Stripped_File_Name;
SFR.Full_Debug_Name := File_Name;
end if;
SFR.Num_SRef_Pragmas := SFR.Num_SRef_Pragmas + 1;
end if;
if SFR.Num_SRef_Pragmas = 1 then
SFR.First_Mapped_Line := Logical_Line_Number (Mapped_Line);
end if;
if SFR.Logical_Lines_Table = null then
SFR.Logical_Lines_Table := To_Pointer
(Memory.Alloc
(size_t (SFR.Lines_Table_Max *
Logical_Lines_Table_Type'Component_Size /
Storage_Unit)));
end if;
SFR.Logical_Lines_Table (Line_After_Pragma - 1) := No_Line_Number;
ML := Logical_Line_Number (Mapped_Line);
for J in Line_After_Pragma .. SFR.Last_Source_Line loop
SFR.Logical_Lines_Table (J) := ML;
ML := ML + 1;
end loop;
end Register_Source_Ref_Pragma;
---------------------------------
-- Set_Source_File_Index_Table --
---------------------------------
procedure Set_Source_File_Index_Table (Xnew : Source_File_Index) is
Ind : Int;
SP : Source_Ptr;
SL : constant Source_Ptr := Source_File.Table (Xnew).Source_Last;
begin
SP := Source_File.Table (Xnew).Source_First;
pragma Assert (SP mod Source_Align = 0);
Ind := Int (SP) / Source_Align;
while SP <= SL loop
Source_File_Index_Table (Ind) := Xnew;
SP := SP + Source_Align;
Ind := Ind + 1;
end loop;
end Set_Source_File_Index_Table;
---------------------------
-- Skip_Line_Terminators --
---------------------------
procedure Skip_Line_Terminators
(P : in out Source_Ptr;
Physical : out Boolean)
is
Chr : constant Character := Source (P);
begin
if Chr = CR then
if Source (P + 1) = LF then
P := P + 2;
else
P := P + 1;
end if;
elsif Chr = LF then
P := P + 1;
elsif Chr = FF or else Chr = VT then
P := P + 1;
Physical := False;
return;
-- Otherwise we have a wide character
else
Skip_Wide (Source, P);
end if;
-- Fall through in the physical line terminator case. First deal with
-- making a possible entry into the lines table if one is needed.
-- Note: we are dealing with a real source file here, this cannot be
-- the instantiation case, so we need not worry about Sloc adjustment.
declare
S : Source_File_Record
renames Source_File.Table (Current_Source_File);
begin
Physical := True;
-- Make entry in lines table if not already made (in some scan backup
-- cases, we will be rescanning previously scanned source, so the
-- entry may have already been made on the previous forward scan).
if Source (P) /= EOF
and then P > S.Lines_Table (S.Last_Source_Line)
then
Add_Line_Tables_Entry (S, P);
end if;
end;
end Skip_Line_Terminators;
--------------
-- Set_Dope --
--------------
procedure Set_Dope
(Src : System.Address; New_Dope : Dope_Ptr)
is
-- A fat pointer is a pair consisting of data pointer and dope pointer,
-- in that order. So we want to overwrite the second word.
Dope : System.Address;
pragma Import (Ada, Dope);
use System.Storage_Elements;
for Dope'Address use Src + System.Address'Size / 8;
begin
Dope := New_Dope.all'Address;
end Set_Dope;
procedure Free_Dope (Src : System.Address) is
Dope : Dope_Ptr;
pragma Import (Ada, Dope);
use System.Storage_Elements;
for Dope'Address use Src + System.Address'Size / 8;
procedure Free is new Unchecked_Deallocation (Dope_Rec, Dope_Ptr);
begin
Free (Dope);
end Free_Dope;
----------------
-- Sloc_Range --
----------------
procedure Sloc_Range (N : Node_Id; Min, Max : out Source_Ptr) is
function Process (N : Node_Id) return Traverse_Result;
-- Process function for traversing the node tree
procedure Traverse is new Traverse_Proc (Process);
-------------
-- Process --
-------------
function Process (N : Node_Id) return Traverse_Result is
Orig : constant Node_Id := Original_Node (N);
begin
if Sloc (Orig) < Min then
if Sloc (Orig) > No_Location then
Min := Sloc (Orig);
end if;
elsif Sloc (Orig) > Max then
if Sloc (Orig) > No_Location then
Max := Sloc (Orig);
end if;
end if;
return OK_Orig;
end Process;
-- Start of processing for Sloc_Range
begin
Min := Sloc (N);
Max := Sloc (N);
Traverse (N);
end Sloc_Range;
-------------------
-- Source_Offset --
-------------------
function Source_Offset (S : Source_Ptr) return Nat is
Sindex : constant Source_File_Index := Get_Source_File_Index (S);
Sfirst : constant Source_Ptr :=
Source_File.Table (Sindex).Source_First;
begin
return Nat (S - Sfirst);
end Source_Offset;
------------------------
-- Top_Level_Location --
------------------------
function Top_Level_Location (S : Source_Ptr) return Source_Ptr is
Oldloc : Source_Ptr;
Newloc : Source_Ptr;
begin
Newloc := S;
loop
Oldloc := Newloc;
Newloc := Instantiation_Location (Oldloc);
exit when Newloc = No_Location;
end loop;
return Oldloc;
end Top_Level_Location;
---------------
-- Tree_Read --
---------------
procedure Tree_Read is
begin
-- First we must free any old source buffer pointers
for J in Source_File.First .. Source_File.Last loop
declare
S : Source_File_Record renames Source_File.Table (J);
begin
if S.Instance = No_Instance_Id then
Free_Source_Buffer (S.Source_Text);
if S.Lines_Table /= null then
Memory.Free (To_Address (S.Lines_Table));
S.Lines_Table := null;
end if;
if S.Logical_Lines_Table /= null then
Memory.Free (To_Address (S.Logical_Lines_Table));
S.Logical_Lines_Table := null;
end if;
else
Free_Dope (S.Source_Text'Address);
S.Source_Text := null;
end if;
end;
end loop;
-- Read in source file table and instance table
Source_File.Tree_Read;
Instances.Tree_Read;
-- The pointers we read in there for the source buffer and lines table
-- pointers are junk. We now read in the actual data that is referenced
-- by these two fields.
for J in Source_File.First .. Source_File.Last loop
declare
S : Source_File_Record renames Source_File.Table (J);
begin
-- Normal case (non-instantiation)
if S.Instance = No_Instance_Id then
S.Lines_Table := null;
S.Logical_Lines_Table := null;
Alloc_Line_Tables (S, Int (S.Last_Source_Line));
for J in 1 .. S.Last_Source_Line loop
Tree_Read_Int (Int (S.Lines_Table (J)));
end loop;
if S.Num_SRef_Pragmas /= 0 then
for J in 1 .. S.Last_Source_Line loop
Tree_Read_Int (Int (S.Logical_Lines_Table (J)));
end loop;
end if;
-- Allocate source buffer and read in the data
declare
T : constant Source_Buffer_Ptr_Var :=
new Source_Buffer (S.Source_First .. S.Source_Last);
begin
Tree_Read_Data (T (S.Source_First)'Address,
Int (S.Source_Last) - Int (S.Source_First) + 1);
S.Source_Text := T.all'Access;
end;
-- For the instantiation case, we do not read in any data. Instead
-- we share the data for the generic template entry. Since the
-- template always occurs first, we can safely refer to its data.
else
declare
ST : Source_File_Record renames
Source_File.Table (S.Template);
begin
-- The lines tables are copied from the template entry
S.Lines_Table := ST.Lines_Table;
S.Logical_Lines_Table := ST.Logical_Lines_Table;
-- The Source_Text of the instance is the same data as that
-- of the template, but with different bounds.
declare
Dope : constant Dope_Ptr :=
new Dope_Rec'(S.Source_First, S.Source_Last);
begin
S.Source_Text := ST.Source_Text;
Set_Dope (S.Source_Text'Address, Dope);
end;
end;
end if;
end;
Set_Source_File_Index_Table (J);
end loop;
end Tree_Read;
----------------
-- Tree_Write --
----------------
procedure Tree_Write is
begin
Source_File.Tree_Write;
Instances.Tree_Write;
-- The pointers we wrote out there for the source buffer and lines
-- table pointers are junk, we now write out the actual data that
-- is referenced by these two fields.
for J in Source_File.First .. Source_File.Last loop
declare
S : Source_File_Record renames Source_File.Table (J);
begin
-- For instantiations, there is nothing to do, since the data is
-- shared with the generic template. When the tree is read, the
-- pointers must be set, but no extra data needs to be written.
-- For the normal case, write out the data of the tables.
if S.Instance = No_Instance_Id then
-- Lines table
for J in 1 .. S.Last_Source_Line loop
Tree_Write_Int (Int (S.Lines_Table (J)));
end loop;
-- Logical lines table if present
if S.Num_SRef_Pragmas /= 0 then
for J in 1 .. S.Last_Source_Line loop
Tree_Write_Int (Int (S.Logical_Lines_Table (J)));
end loop;
end if;
-- Source buffer
Tree_Write_Data
(S.Source_Text (S.Source_First)'Address,
Int (S.Source_Last) - Int (S.Source_First) + 1);
end if;
end;
end loop;
end Tree_Write;
--------------------
-- Write_Location --
--------------------
procedure Write_Location (P : Source_Ptr) is
begin
if P = No_Location then
Write_Str ("");
elsif P <= Standard_Location then
Write_Str ("");
else
declare
SI : constant Source_File_Index := Get_Source_File_Index (P);
begin
Write_Name (Debug_Source_Name (SI));
Write_Char (':');
Write_Int (Int (Get_Logical_Line_Number (P)));
Write_Char (':');
Write_Int (Int (Get_Column_Number (P)));
if Instantiation (SI) /= No_Location then
Write_Str (" [");
Write_Location (Instantiation (SI));
Write_Char (']');
end if;
end;
end if;
end Write_Location;
----------------------
-- Write_Time_Stamp --
----------------------
procedure Write_Time_Stamp (S : Source_File_Index) is
T : constant Time_Stamp_Type := Time_Stamp (S);
P : Natural;
begin
if T (1) = '9' then
Write_Str ("19");
P := 0;
else
Write_Char (T (1));
Write_Char (T (2));
P := 2;
end if;
Write_Char (T (P + 1));
Write_Char (T (P + 2));
Write_Char ('-');
Write_Char (T (P + 3));
Write_Char (T (P + 4));
Write_Char ('-');
Write_Char (T (P + 5));
Write_Char (T (P + 6));
Write_Char (' ');
Write_Char (T (P + 7));
Write_Char (T (P + 8));
Write_Char (':');
Write_Char (T (P + 9));
Write_Char (T (P + 10));
Write_Char (':');
Write_Char (T (P + 11));
Write_Char (T (P + 12));
end Write_Time_Stamp;
----------------------------------------------
-- Access Subprograms for Source File Table --
----------------------------------------------
function Debug_Source_Name (S : SFI) return File_Name_Type is
begin
return Source_File.Table (S).Debug_Source_Name;
end Debug_Source_Name;
function Instance (S : SFI) return Instance_Id is
begin
return Source_File.Table (S).Instance;
end Instance;
function File_Name (S : SFI) return File_Name_Type is
begin
return Source_File.Table (S).File_Name;
end File_Name;
function File_Type (S : SFI) return Type_Of_File is
begin
return Source_File.Table (S).File_Type;
end File_Type;
function First_Mapped_Line (S : SFI) return Logical_Line_Number is
begin
return Source_File.Table (S).First_Mapped_Line;
end First_Mapped_Line;
function Full_Debug_Name (S : SFI) return File_Name_Type is
begin
return Source_File.Table (S).Full_Debug_Name;
end Full_Debug_Name;
function Full_File_Name (S : SFI) return File_Name_Type is
begin
return Source_File.Table (S).Full_File_Name;
end Full_File_Name;
function Full_Ref_Name (S : SFI) return File_Name_Type is
begin
return Source_File.Table (S).Full_Ref_Name;
end Full_Ref_Name;
function Identifier_Casing (S : SFI) return Casing_Type is
begin
return Source_File.Table (S).Identifier_Casing;
end Identifier_Casing;
function Inherited_Pragma (S : SFI) return Boolean is
begin
return Source_File.Table (S).Inherited_Pragma;
end Inherited_Pragma;
function Inlined_Body (S : SFI) return Boolean is
begin
return Source_File.Table (S).Inlined_Body;
end Inlined_Body;
function Inlined_Call (S : SFI) return Source_Ptr is
begin
return Source_File.Table (S).Inlined_Call;
end Inlined_Call;
function Keyword_Casing (S : SFI) return Casing_Type is
begin
return Source_File.Table (S).Keyword_Casing;
end Keyword_Casing;
function Last_Source_Line (S : SFI) return Physical_Line_Number is
begin
return Source_File.Table (S).Last_Source_Line;
end Last_Source_Line;
function License (S : SFI) return License_Type is
begin
return Source_File.Table (S).License;
end License;
function Num_SRef_Pragmas (S : SFI) return Nat is
begin
return Source_File.Table (S).Num_SRef_Pragmas;
end Num_SRef_Pragmas;
function Reference_Name (S : SFI) return File_Name_Type is
begin
return Source_File.Table (S).Reference_Name;
end Reference_Name;
function Source_Checksum (S : SFI) return Word is
begin
return Source_File.Table (S).Source_Checksum;
end Source_Checksum;
function Source_First (S : SFI) return Source_Ptr is
begin
return Source_File.Table (S).Source_First;
end Source_First;
function Source_Last (S : SFI) return Source_Ptr is
begin
return Source_File.Table (S).Source_Last;
end Source_Last;
function Source_Text (S : SFI) return Source_Buffer_Ptr is
begin
return Source_File.Table (S).Source_Text;
end Source_Text;
function Template (S : SFI) return SFI is
begin
return Source_File.Table (S).Template;
end Template;
function Time_Stamp (S : SFI) return Time_Stamp_Type is
begin
return Source_File.Table (S).Time_Stamp;
end Time_Stamp;
function Unit (S : SFI) return Unit_Number_Type is
begin
return Source_File.Table (S).Unit;
end Unit;
------------------------------------------
-- Set Procedures for Source File Table --
------------------------------------------
procedure Set_Identifier_Casing (S : SFI; C : Casing_Type) is
begin
Source_File.Table (S).Identifier_Casing := C;
end Set_Identifier_Casing;
procedure Set_Keyword_Casing (S : SFI; C : Casing_Type) is
begin
Source_File.Table (S).Keyword_Casing := C;
end Set_Keyword_Casing;
procedure Set_License (S : SFI; L : License_Type) is
begin
Source_File.Table (S).License := L;
end Set_License;
procedure Set_Unit (S : SFI; U : Unit_Number_Type) is
begin
Source_File.Table (S).Unit := U;
end Set_Unit;
----------------------
-- Trim_Lines_Table --
----------------------
procedure Trim_Lines_Table (S : Source_File_Index) is
Max : constant Nat := Nat (Source_File.Table (S).Last_Source_Line);
begin
-- Release allocated storage that is no longer needed
Source_File.Table (S).Lines_Table := To_Pointer
(Memory.Realloc
(To_Address (Source_File.Table (S).Lines_Table),
Memory.size_t
(Max * (Lines_Table_Type'Component_Size / System.Storage_Unit))));
Source_File.Table (S).Lines_Table_Max := Physical_Line_Number (Max);
end Trim_Lines_Table;
------------
-- Unlock --
------------
procedure Unlock is
begin
Source_File.Locked := False;
Source_File.Release;
end Unlock;
--------
-- wl --
--------
procedure wl (P : Source_Ptr) is
begin
Write_Location (P);
Write_Eol;
end wl;
end Sinput;