45 lines
1.6 KiB
C
45 lines
1.6 KiB
C
|
// Copyright 2014 The Crashpad Authors. All rights reserved.
|
||
|
|
//
|
||
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
// you may not use this file except in compliance with the License.
|
||
|
|
// You may obtain a copy of the License at
|
||
|
|
//
|
||
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
//
|
||
|
|
// Unless required by applicable law or agreed to in writing, software
|
||
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
// See the License for the specific language governing permissions and
|
||
|
|
// limitations under the License.
|
||
|
|
|
||
|
|
#ifndef CRASHPAD_UTIL_NUMERIC_IN_RANGE_CAST_H_
|
||
|
|
#define CRASHPAD_UTIL_NUMERIC_IN_RANGE_CAST_H_
|
||
|
|
|
||
|
|
#include "base/logging.h"
|
||
|
|
#include "base/numerics/safe_conversions.h"
|
||
|
|
|
||
|
|
namespace crashpad {
|
||
|
|
|
||
|
|
//! \brief Casts to a different type if it can be done without data loss,
|
||
|
|
//! logging a warning message and returing a default value otherwise.
|
||
|
|
//!
|
||
|
|
//! \param[in] source The value to convert and return.
|
||
|
|
//! \param[in] default_value The default value to return, in the event that \a
|
||
|
|
//! source cannot be represented in the destination type.
|
||
|
|
//!
|
||
|
|
//! \return \a source if it can be represented in the destination type,
|
||
|
|
//! otherwise \a default_value.
|
||
|
|
template <typename Destination, typename Source>
|
||
|
|
Destination InRangeCast(Source source, Destination default_value) {
|
||
|
|
if (base::IsValueInRangeForNumericType<Destination>(source)) {
|
||
|
|
return static_cast<Destination>(source);
|
||
|
|
}
|
||
|
|
|
||
|
|
LOG(WARNING) << "value " << source << " out of range";
|
||
|
|
return static_cast<Destination>(default_value);
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace crashpad
|
||
|
|
|
||
|
|
#endif // CRASHPAD_UTIL_NUMERIC_IN_RANGE_CAST_H_
|