archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-28 15:24:43 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8219816: Add IsArray/RemoveExtent type traits utilities

Browse source 
Reviewed-by: kbarrett, eosterlund
This commit is contained in:
Per Lidén 2019-03-13 11:31:00 +01:00
parent c9591787fa
commit 304dca18b5
4 changed files with 206 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

35
src/hotspot/share/metaprogramming/isArray.hpp Normal file
View file

@ -0,0 +1,35 @@
/*
* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#ifndef SHARE_METAPROGRAMMING_ISARRAY_HPP
#define SHARE_METAPROGRAMMING_ISARRAY_HPP
#include "metaprogramming/integralConstant.hpp"
template <typename T> struct IsArray: public FalseType {};
template <typename T> struct IsArray<T[]>: public TrueType {};
template <typename T, size_t S> struct IsArray<T[S]>: public TrueType {};
#endif // SHARE_METAPROGRAMMING_ISARRAY_HPP

35
src/hotspot/share/metaprogramming/removeExtent.hpp Normal file
View file

@ -0,0 +1,35 @@
/*
* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#ifndef SHARE_METAPROGRAMMING_REMOVEEXTENT_HPP
#define SHARE_METAPROGRAMMING_REMOVEEXTENT_HPP
#include "memory/allocation.hpp"
template <typename T> struct RemoveExtent: AllStatic { typedef T type; };
template <typename T> struct RemoveExtent<T[]>: AllStatic { typedef T type; };
template <typename T, size_t S> struct RemoveExtent<T[S]>: AllStatic { typedef T type; };
#endif // SHARE_METAPROGRAMMING_REMOVEEXTENT_HPP

71
test/hotspot/gtest/metaprogramming/test_isArray.cpp Normal file
View file

@ -0,0 +1,71 @@
/*
* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "precompiled.hpp"
#include "memory/allocation.hpp"
#include "metaprogramming/isArray.hpp"
#include "utilities/debug.hpp"
class IsArrayTest: AllStatic {
class A: AllStatic {};
static const bool ia_A = IsArray<A>::value;
STATIC_ASSERT(!ia_A);
static const bool ia_Aptr = IsArray<A*>::value;
STATIC_ASSERT(!ia_Aptr);
static const bool ia_Aarr = IsArray<A[]>::value;
STATIC_ASSERT(ia_Aarr);
static const bool ia_Aarr10 = IsArray<A[10]>::value;
STATIC_ASSERT(ia_Aarr10);
static const bool ia_Aptrarr10 = IsArray<A*[10]>::value;
STATIC_ASSERT(ia_Aptrarr10);
static const bool ia_Aarr10arr10 = IsArray<A[10][10]>::value;
STATIC_ASSERT(ia_Aarr10arr10);
static const bool ia_cAarr = IsArray<const A[]>::value;
STATIC_ASSERT(ia_cAarr);
static const bool ia_vAarr = IsArray<volatile A[]>::value;
STATIC_ASSERT(ia_vAarr);
static const bool ia_cAarr10 = IsArray<const A[10]>::value;
STATIC_ASSERT(ia_cAarr10);
static const bool ia_vAarr10 = IsArray<volatile A[10]>::value;
STATIC_ASSERT(ia_vAarr10);
static const bool ia_voidptr = IsArray<void*>::value;
STATIC_ASSERT(!ia_voidptr);
static const bool ia_intptrt = IsArray<intptr_t>::value;
STATIC_ASSERT(!ia_intptrt);
static const bool ia_char = IsArray<char>::value;
STATIC_ASSERT(!ia_char);
};

65
test/hotspot/gtest/metaprogramming/test_removeExtent.cpp Normal file
View file

@ -0,0 +1,65 @@
/*
* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "precompiled.hpp"
#include "memory/allocation.hpp"
#include "metaprogramming/removeExtent.hpp"
#include "metaprogramming/isSame.hpp"
#include "utilities/debug.hpp"
class RemoveExtentTest {
class A: AllStatic {};
typedef A* Aptr;
typedef A Aarr[];
typedef A Aarr10[10];
typedef const A cA;
typedef const A* cAptr;
typedef const A cAarr[];
typedef const A cAarr10[10];
typedef RemoveExtent<Aptr>::type ra_Aptr;
static const bool ra_Aptr_is_Aptr = IsSame<ra_Aptr, Aptr>::value;
STATIC_ASSERT(ra_Aptr_is_Aptr);
typedef RemoveExtent<Aarr>::type ra_Aarr;
static const bool ra_Aarr_is_A = IsSame<ra_Aarr, A>::value;
STATIC_ASSERT(ra_Aarr_is_A);
typedef RemoveExtent<Aarr10>::type ra_Aarr10;
static const bool ra_Aarr10_is_A = IsSame<ra_Aarr10, A>::value;
STATIC_ASSERT(ra_Aarr10_is_A);
typedef RemoveExtent<cAptr>::type ra_cAptr;
static const bool ra_cAptr_is_cAptr = IsSame<ra_cAptr, cAptr>::value;
STATIC_ASSERT(ra_cAptr_is_cAptr);
typedef RemoveExtent<cAarr>::type ra_cAarr;
static const bool ra_cAarr_is_cA = IsSame<ra_cAarr, cA>::value;
STATIC_ASSERT(ra_cAarr_is_cA);
typedef RemoveExtent<cAarr10>::type ra_cAarr10;
static const bool ra_cAarr10_is_cA = IsSame<ra_cAarr10, cA>::value;
STATIC_ASSERT(ra_cAarr10_is_cA);
};