2 +----------------------------------------------------------------------+
4 +----------------------------------------------------------------------+
5 | Copyright (c) 2010-present Facebook, Inc. (http://www.facebook.com) |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.01 of the PHP license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at the following url: |
10 | http://www.php.net/license/3_01.txt |
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13 | license@php.net so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
16 #ifndef incl_HPHP_SAFE_CAST_H_
17 #define incl_HPHP_SAFE_CAST_H_
20 #include <boost/numeric/conversion/cast.hpp>
22 #include <folly/Conv.h>
24 #include "hphp/util/compilation-flags.h"
25 #include "hphp/util/portability.h"
29 //////////////////////////////////////////////////////////////////////
32 void safe_cast_failure(const std::string
&, const char*, const char*);
34 //////////////////////////////////////////////////////////////////////
37 * Optionally DEBUG-only wrappers around boost::numeric_cast that convert any
38 * thrown exceptions to a failed assertion.
41 template<typename To
, typename From
>
42 To
always_safe_cast(From val
) {
44 return boost::numeric_cast
<To
>(val
);
45 } catch (std::bad_cast
& bce
) {
47 folly::to
<std::string
>(val
),
48 // The function is always safe_cast, but will indicate which
49 // types were involved.
56 template<typename To
, typename From
>
57 To
safe_cast(From val
) {
58 return debug
? always_safe_cast
<To
>(val
) : static_cast<To
>(val
);
61 //////////////////////////////////////////////////////////////////////