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------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- G N A T . C P P . S T D . T Y P E _ I N F O --
-- --
-- B o d y --
-- --
-- Copyright (C) 2022-2025, AdaCore --
-- --
-- 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 --
-- <http://www.gnu.org/licenses/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
with System; use System;
with System.Storage_Elements; use System.Storage_Elements;
with Interfaces.C; use Interfaces.C;
with Interfaces.C.Extensions; use Interfaces.C.Extensions;
with Interfaces.C.Strings; use Interfaces.C.Strings;
with Ada.Unchecked_Conversion;
package body GNAT.CPP.Std.Type_Info is
function strcmp (L, R : chars_ptr) return Interfaces.C.int;
pragma Import (Intrinsic, strcmp, "__builtin_strcmp");
function Name_Starts_With_Asterisk (this : access constant type_info'Class)
return Boolean;
function Name_Past_Asterisk (this : access constant type_info'Class)
return chars_ptr;
function To_Address is
new Ada.Unchecked_Conversion (chars_ptr, System.Address);
function To_Pointer is
new Ada.Unchecked_Conversion (System.Address, chars_ptr);
function Name_Starts_With_Asterisk (this : access constant type_info'Class)
return Boolean is
Addr : constant System.Address := To_Address (this.Raw_Name);
C : aliased char;
for C'Address use Addr;
begin
return C = '*';
end Name_Starts_With_Asterisk;
function Name_Past_Asterisk (this : access constant type_info'Class)
return chars_ptr is
Addr : System.Address := To_Address (this.Raw_Name);
begin
if this.Name_Starts_With_Asterisk then
Addr := Addr + Storage_Offset (1);
end if;
return To_Pointer (Addr);
end Name_Past_Asterisk;
------------
-- Name --
------------
function Name (this : access constant type_info'Class)
return chars_ptr
is (this.Name_Past_Asterisk);
--------------
-- Before --
--------------
function Before (this, that : access constant type_info'Class)
return Boolean is
begin
if not this.Name_Starts_With_Asterisk
or else not that.Name_Starts_With_Asterisk
then
return strcmp (this.Raw_Name, that.Raw_Name) < 0;
end if;
return To_Address (this.Raw_Name) < To_Address (that.Raw_Name);
end Before;
--------------
-- Equals --
--------------
function Equals (this, that : access constant type_info'Class)
return Boolean is
begin
if this = that then
return True;
end if;
if this.Name_Starts_With_Asterisk then
return False;
end if;
return strcmp (this.Raw_Name, that.Raw_Name) = 0;
end Equals;
function Convert_Caught_Object (Choice, Except : access type_info'Class;
Thrown : in out Address;
Lang : Character)
return Interfaces.C.C_bool;
pragma Export (Cpp, Convert_Caught_Object, "__gnat_convert_caught_object");
-- Convert the exception object at Thrown, under Lang convention,
-- from type Except to type Choice, adjusting Thrown as needed and
-- returning True, or returning False in case the conversion
-- fails. This is called from raise-gcc, and it is placed here
-- rather than in GNAT.CPP_Exceptions to avoid dragging all that
-- in when the program doesn't use C++ exceptions.
---------------------------
-- Convert_Caught_Object --
---------------------------
function Convert_Caught_Object (Choice, Except : access type_info'Class;
Thrown : in out Address;
Lang : Character)
return Interfaces.C.C_bool is
begin
if Choice.Equals (Except) then
return C_bool'(True);
end if;
if Lang = 'B' then
if Except.Is_Pointer_P then
declare
Thrown_Indirect : Address;
for Thrown_Indirect'Address use Thrown;
begin
Thrown := Thrown_Indirect;
end;
end if;
if Choice.Do_Catch (Except, Thrown, 1) then
return C_bool'(True);
end if;
end if;
return C_bool'(False);
end Convert_Caught_Object;
end GNAT.CPP.Std.Type_Info;
|
