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/usr/share/ada/adainclude/asis/asis-extensions-strings.adb is in libasis2014-dev 2014-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- --
-- ASIS UTILITY LIBRARY COMPONENTS --
-- --
-- A S I S . E X T E N S I O N S . S T R I N G S --
-- --
-- B o d y --
-- --
-- Copyright (C) 2004-2013, AdaCore --
-- --
-- ASIS-for-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 --
-- Software Foundation; either version 2, or (at your option) any later --
-- version. ASIS-for-GNAT is distributed in the hope that it will be use- --
-- ful, but WITHOUT ANY WARRANTY; without even the implied warranty of MER- --
-- CHANTABILITY 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 ASIS-for-GNAT; see file --
-- COPYING. If not, write to the Free Software Foundation, 51 Franklin --
-- Street, Fifth Floor, Boston, MA 02110-1301, USA. --
-- --
-- --
-- --
-- --
-- --
-- --
-- --
-- --
-- ASIS-for-GNAT was originally developed by the ASIS-for-GNAT team at the --
-- Software Engineering Laboratory of the Swiss Federal Institute of --
-- Technology (LGL-EPFL) in Lausanne, Switzerland, in cooperation with the --
-- Scientific Research Computer Center of Moscow State University (SRCC --
-- MSU), Russia, with funding partially provided by grants from the Swiss --
-- National Science Foundation and the Swiss Academy of Engineering --
-- Sciences. ASIS-for-GNAT is now maintained by AdaCore --
-- (http://www.adacore.com). --
-- --
------------------------------------------------------------------------------
-- This package was a part of ASIS Utility Library (as ASIS_UL.Strings). It
-- has been moved into Asis.Extensions hierarchy to optimize dependencies on
-- GNATCOOL sources.
with Ada.Characters.Handling; use Ada.Characters.Handling;
with Ada.Strings; use Ada.Strings;
with Ada.Strings.Fixed; use Ada.Strings.Fixed;
with Table;
with Asis.Elements; use Asis.Elements;
with Asis.Set_Get; use Asis.Set_Get;
with Atree; use Atree;
with Namet; use Namet;
with Sinput; use Sinput;
package body Asis.Extensions.Strings is
package Chars is new Table.Table (
Table_Component_Type => Character,
Table_Index_Type => Integer,
Table_Low_Bound => 1,
Table_Initial => 10000,
Table_Increment => 1000,
Table_Name => "character container");
Table : Chars.Table_Ptr renames Chars.Table;
-------------------------
-- Build_GNAT_Location --
-------------------------
function Build_GNAT_Location_Old
(For_Elem : Asis.Element;
Line : Natural := 0;
Column : Natural := 0)
return String_Loc
is
S : String_Loc := Nil_String_Loc;
First : constant Natural := Chars.Last + 1;
P : Source_Ptr;
Sindex : Source_File_Index;
Instance_Depth : Natural := 0;
function Strip_Space (S : String) return String;
pragma Inline (Strip_Space);
-- Is applied to the result of 'Img attribute. Cuts out the leading
-- space.
function Strip_Space (S : String) return String is
First_Idx : constant Positive := S'First + 1;
Result : constant String := S (First_Idx .. S'Last);
begin
return Result;
end Strip_Space;
procedure Enter_Sloc
(Line : Natural := 0;
Column : Natural := 0);
-- For the current value of P, sets in the string table the string
-- of the form file_name:line_number. Also computes Sindex as the
-- Id of the sourse file of P. If Line and Column are equal to zero,
-- computes line and column number from P.
procedure Enter_Sloc
(Line : Natural := 0;
Column : Natural := 0)
is
F_Name : File_Name_Type;
begin
Sindex := Get_Source_File_Index (P);
F_Name := File_Name (Sindex);
Get_Name_String (F_Name);
S := Enter_String (Name_Buffer (1 .. Name_Len) & ":");
if Line = 0 then
S := Enter_String (Strip_Space (Get_Physical_Line_Number (P)'Img));
else
S := Enter_String (Strip_Space (Line'Img));
end if;
S := Enter_String (":");
if Column = 0 then
S := Enter_String (Strip_Space (Get_Column_Number (P)'Img));
else
S := Enter_String (Strip_Space (Column'Img));
end if;
end Enter_Sloc;
procedure Enter_Node_Sloc
(Line : Natural := 0;
Column : Natural := 0);
-- Enter the whole SLOC starting from the current value of P. This
-- value should be created from the node of interest.
procedure Enter_Node_Sloc
(Line : Natural := 0;
Column : Natural := 0)
is
begin
if P = No_Location then
S := Enter_String ("no location");
elsif P <= Standard_Location then
S := Enter_String ("Standard location");
else
Enter_Sloc (Line, Column);
P := Instantiation (Sindex);
while P /= No_Location loop
pragma Assert (Line = 0 and then Column = 0);
S := Enter_String ("[");
Instance_Depth := Instance_Depth + 1;
Enter_Sloc;
P := Instantiation (Sindex);
end loop;
for J in 1 .. Instance_Depth loop
S := Enter_String ("]");
end loop;
end if;
end Enter_Node_Sloc;
begin
-- The implementation is adopted from
-- Gnatelim.Asis_Utilities.Build_Sloc_Trace
P := Sloc (Node (For_Elem));
Enter_Node_Sloc (Line, Column);
if Is_Part_Of_Inherited (For_Elem) then
S := Enter_String ("(");
P := Sloc (Node_Field_1 (For_Elem));
Enter_Node_Sloc (Line, Column);
S := Enter_String (")");
end if;
S.First := First;
S.Last := Chars.Last;
return S;
end Build_GNAT_Location_Old;
function Build_GNAT_Location_Old
(For_Elem : Asis.Element;
Line : Natural := 0;
Column : Natural := 0)
return String
is
Last_Backup : constant Integer := Chars.Last;
Res_Sloc : constant String_Loc :=
Build_GNAT_Location (For_Elem, Line, Column);
begin
declare
Result : constant String := Get_String (Res_Sloc);
begin
Chars.Set_Last (Last_Backup);
return Result;
end;
end Build_GNAT_Location_Old;
-----------------------------
-- Build_GNAT_Location_New --
-----------------------------
function Build_GNAT_Location
(For_Elem : Asis.Element;
Line : Natural := 0;
Column : Natural := 0)
return String_Loc
is
S : String_Loc := Nil_String_Loc;
First : constant Natural := Chars.Last + 1;
P : Source_Ptr;
Sindex : Source_File_Index;
-- function Strip_Space (S : String) return String;
-- pragma Inline (Strip_Space);
-- -- Is applied to the result of 'Img attribute. Cuts out the leading
-- -- space.
-- function Strip_Space (S : String) return String is
-- First_Idx : constant Positive := S'First + 1;
-- Result : constant String := S (First_Idx .. S'Last);
-- begin
-- return Result;
-- end Strip_Space;
procedure Enter_Sloc
(Line : Natural := 0;
Column : Natural := 0);
-- For the current value of P, sets in the string table the string
-- of the form file_name:line_number. Also computes Sindex as the
-- Id of the sourse file of P. If Line and Column are equal to zero,
-- computes line and column number from P.
procedure Enter_Sloc
(Line : Natural := 0;
Column : Natural := 0)
is
F_Name : File_Name_Type;
begin
Sindex := Get_Source_File_Index (P);
F_Name := File_Name (Sindex);
Get_Name_String (F_Name);
S := Enter_String (Name_Buffer (1 .. Name_Len) & ":");
if Line = 0 then
S := Enter_String (Trim (Get_Physical_Line_Number (P)'Img, Left));
else
S := Enter_String (Trim (Line'Img, Left));
end if;
S := Enter_String (":");
if Column = 0 then
S := Enter_String (Trim (Get_Column_Number (P)'Img, Left));
else
S := Enter_String (Trim (Column'Img, Left));
end if;
end Enter_Sloc;
procedure Enter_Node_Sloc
(Line : Natural := 0;
Column : Natural := 0);
-- Enter the whole SLOC starting from the current value of P. This
-- value should be created from the node of interest.
procedure Enter_Node_Sloc
(Line : Natural := 0;
Column : Natural := 0)
is
begin
if P = No_Location then
S := Enter_String ("no location");
elsif P <= Standard_Location then
S := Enter_String ("Standard location");
else
Enter_Sloc (Line, Column);
P := Instantiation (Sindex);
while P /= No_Location loop
pragma Assert (Line = 0 and then Column = 0);
S := Enter_String (Instance_SLOC_Txt);
Enter_Sloc;
P := Instantiation (Sindex);
end loop;
end if;
end Enter_Node_Sloc;
begin
-- The implementation is adopted from
-- Gnatelim.Asis_Utilities.Build_Sloc_Trace
P := Sloc (Node (For_Elem));
Enter_Node_Sloc (Line, Column);
if Is_Part_Of_Inherited (For_Elem) then
S := Enter_String ("(");
P := Sloc (Node_Field_1 (For_Elem));
Enter_Node_Sloc (Line, Column);
S := Enter_String (")");
end if;
S.First := First;
S.Last := Chars.Last;
return S;
end Build_GNAT_Location;
function Build_GNAT_Location
(For_Elem : Asis.Element;
Line : Natural := 0;
Column : Natural := 0)
return String
is
Last_Backup : constant Integer := Chars.Last;
Res_Sloc : constant String_Loc :=
Build_GNAT_Location (For_Elem, Line, Column);
begin
declare
Result : constant String := Get_String (Res_Sloc);
begin
Chars.Set_Last (Last_Backup);
return Result;
end;
end Build_GNAT_Location;
------------------
-- Enter_String --
------------------
function Enter_String (S : String) return String_Loc is
Len : constant Integer := S'Length;
F : Integer;
begin
if Len = 0 then
return Nil_String_Loc;
else
Chars.Increment_Last;
F := Chars.Last;
Chars.Set_Last (F + Len - 1);
Table (F .. F + Len - 1) := Chars.Table_Type (S);
return (F, F + Len - 1);
end if;
end Enter_String;
----------------
-- Get_String --
----------------
function Get_String (SL : String_Loc) return String is
begin
if SL = Nil_String_Loc then
return "";
else
return String (Table (SL.First .. SL.Last));
end if;
end Get_String;
----------
-- Init --
----------
procedure Init is
begin
Chars.Init;
end Init;
--------------
-- Is_Equal --
--------------
function Is_Equal (S : String; SL : String_Loc) return Boolean is
Result : Boolean := False;
begin
if SL.First in 1 .. Chars.Last
and then
SL.Last in 1 .. Chars.Last
and then
SL.Last - SL.First + 1 = S'Length
then
Result := S = Get_String (SL);
end if;
return Result;
end Is_Equal;
----------------
-- Old_Format --
----------------
function Old_Format (SLOC : String) return String is
Result : String (SLOC'Range);
Res_Idx : Natural := Result'First;
Count : Natural := 0;
SLOC_Start : Natural;
SLOC_End : Natural;
SLOC_Last : constant Natural := SLOC'Last;
begin
SLOC_End := Index (SLOC, Instance_SLOC_Txt);
if SLOC_End = 0 then
return SLOC;
end if;
SLOC_Start := SLOC'First;
while SLOC_End /= 0 loop
SLOC_End := SLOC_End - 1;
Result (Res_Idx .. Res_Idx + (SLOC_End - SLOC_Start)) :=
SLOC (SLOC_Start .. SLOC_End);
Res_Idx := Res_Idx + (SLOC_End - SLOC_Start + 1);
Result (Res_Idx) := '[';
Res_Idx := Res_Idx + 1;
Count := Count + 1;
SLOC_Start := SLOC_End + Instance_SLOC_Txt'Length + 1;
SLOC_End :=
Index (SLOC (SLOC_Start + 1 .. SLOC_Last), Instance_SLOC_Txt);
end loop;
Result (Res_Idx .. Res_Idx + (SLOC_Last - SLOC_Start)) :=
SLOC (SLOC_Start .. SLOC_Last);
Res_Idx := Res_Idx + (SLOC_Last - SLOC_Start);
for J in 1 .. Count loop
Res_Idx := Res_Idx + 1;
Result (Res_Idx) := ']';
end loop;
return Result (Result'First .. Res_Idx);
end Old_Format;
--------------------
-- SLOC_Less_Than --
--------------------
function SLOC_Less_Than (L, R : String) return Boolean is
L_Start : Natural := L'First;
R_Start : Natural := R'First;
L_End : Natural := Index (L, ":");
R_End : Natural := Index (R, ":");
L_Val : Positive;
R_Val : Positive;
begin
-- When comparing SLOCs we have the following problems:
-- 1. file names may be in different casing, and X.ads < a.ads for
-- predefined "<"
-- 2. ':' that separates file name, line and column is greater than
-- any digit, so for the predefined "<" a.ads:50:20 is less than
-- a.ads 5:20
--
-- 3. we cannot use alphabetical comparision for the whole SLOC, because
-- line and column numbers should be compared as digits
if L_End = 0 or else R_End = 0 then
return False;
elsif To_Lower (L (L_Start .. L_End)) <
To_Lower (R (R_Start .. R_End))
then
return True;
elsif To_Lower (L (L_Start .. L_End)) >
To_Lower (R (R_Start .. R_End))
then
return False;
else
-- file names are the same, we have to compare line and column
-- numbers
L_Start := L_End + 1;
R_Start := R_End + 1;
L_End := Index (L (L_Start .. L'Last), ":") - 1;
R_End := Index (R (R_Start .. R'Last), ":") - 1;
L_Val := Positive'Value (L (L_Start .. L_End));
R_Val := Positive'Value (R (R_Start .. R_End));
if L_Val < R_Val then
return True;
elsif L_Val > R_Val then
return False;
else
-- line numbers are also the same
L_Start := L_End + 2;
R_Start := R_End + 2;
L_End := Index (L (L_Start .. L'Last), Instance_SLOC_Txt);
R_End := Index (R (R_Start .. R'Last), Instance_SLOC_Txt);
-- For old SLOC format:
--
-- L_End := Index (L (L_Start .. L'Last), "[");
-- R_End := Index (R (R_Start .. R'Last), "[");
if L_End = 0 then
L_End := L'Last;
else
-- SLOC from instantiation
L_End := L_End - 1;
end if;
if R_End = 0 then
R_End := R'Last;
else
-- SLOC from instantiation
R_End := R_End - 1;
end if;
L_Val := Positive'Value (L (L_Start .. L_End));
R_Val := Positive'Value (R (R_Start .. R_End));
if L_Val < R_Val then
return True;
else
return False;
end if;
end if;
end if;
end SLOC_Less_Than;
end Asis.Extensions.Strings;
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