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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgfortran/] [intrinsics/] [extends_type_of.c] - Rev 848
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/* Implementation of the EXTENDS_TYPE_OF intrinsic. Copyright (C) 2004, 2007, 2009, 2011 Free Software Foundation, Inc. Contributed by Janus Weil <janus@gcc.gnu.org>. This file is part of the GNU Fortran runtime library (libgfortran). Libgfortran is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. Libgfortran is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. 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/>. */ #include "libgfortran.h" #include <stdlib.h> typedef struct vtype { GFC_INTEGER_4 hash; GFC_INTEGER_4 size; struct vtype *extends; } vtype; extern GFC_LOGICAL_4 is_extension_of (struct vtype *, struct vtype *); export_proto(is_extension_of); /* This is a helper function for the F2003 intrinsic EXTENDS_TYPE_OF. While EXTENDS_TYPE_OF accepts CLASS or TYPE arguments, this one here gets passed the corresponding vtabs. Each call to EXTENDS_TYPE_OF is translated to a call to is_extension_of. */ GFC_LOGICAL_4 is_extension_of (struct vtype *v1, struct vtype *v2) { while (v1) { if (v1->hash == v2->hash) return 1; v1 = v1->extends; } return 0; }
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