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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef GRPCXX_SUPPORT_SLICE_H
#define GRPCXX_SUPPORT_SLICE_H
#include <grpc++/support/config.h>
#include <grpc/support/slice.h>
namespace grpc {
/// A wrapper around \a gpr_slice.
///
/// A slice represents a contiguous reference counted array of bytes.
/// It is cheap to take references to a slice, and it is cheap to create a
/// slice pointing to a subset of another slice.
class Slice final {
public:
/// Construct an empty slice.
Slice();
// Destructor - drops one reference.
~Slice();
enum AddRef { ADD_REF };
/// Construct a slice from \a slice, adding a reference.
Slice(gpr_slice slice, AddRef);
enum StealRef { STEAL_REF };
/// Construct a slice from \a slice, stealing a reference.
Slice(gpr_slice slice, StealRef);
/// Copy constructor, adds a reference.
Slice(const Slice& other);
/// Assignment, reference count is unchanged.
Slice& operator=(Slice other) {
std::swap(slice_, other.slice_);
return *this;
}
/// Byte size.
size_t size() const { return GPR_SLICE_LENGTH(slice_); }
/// Raw pointer to the beginning (first element) of the slice.
const uint8_t* begin() const { return GPR_SLICE_START_PTR(slice_); }
/// Raw pointer to the end (one byte \em past the last element) of the slice.
const uint8_t* end() const { return GPR_SLICE_END_PTR(slice_); }
/// Raw C slice. Caller needs to call gpr_slice_unref when done.
gpr_slice c_slice() const { return gpr_slice_ref(slice_); }
private:
friend class ByteBuffer;
gpr_slice slice_;
};
} // namespace grpc
#endif // GRPCXX_SUPPORT_SLICE_H
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