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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gfx/range/range.h"
#include <limits>
#include "base/logging.h"
namespace gfx {
Range::Range(const NSRange& range) {
*this = range;
}
Range& Range::operator=(const NSRange& range) {
if (range.location == NSNotFound) {
DCHECK_EQ(0U, range.length);
*this = InvalidRange();
} else {
set_start(range.location);
// Don't overflow |end_|.
DCHECK_LE(range.length, std::numeric_limits<size_t>::max() - start());
set_end(start() + range.length);
}
return *this;
}
NSRange Range::ToNSRange() const {
if (!IsValid())
return NSMakeRange(NSNotFound, 0);
return NSMakeRange(GetMin(), length());
}
} // namespace gfx
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