/*

 * 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

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 *

 */

#include "jfr/writers/jfrEncoders.hpp"

#include "memory/allocation.hpp"

#include "utilities/globalDefinitions.hpp"

enum JfrStringEncoding {

  NULL_STRING = 0,

  EMPTY_STRING,

  STRING_CONSTANT,

  UTF8,

  UTF16,

  LATIN1,

  NOF_STRING_ENCODINGS

};

template <typename IntegerEncoder, typename BaseEncoder>

class EncoderHost : public AllStatic {

 public:

  template <typename T>

  static u1* be_write(T value, u1* pos) {

    return be_write(&value, 1, pos);

  }

  template <typename T>

  static u1* be_write(const T* value, size_t len, u1* pos) {

    assert(value != NULL, "invariant");

    assert(pos != NULL, "invariant");

    assert(len > 0, "invariant");

    return pos + BaseEncoder::encode(value, len, pos);

  }

  template <typename T>

  static u1* write_padded(T value, u1* pos) {

    assert(pos != NULL, "invariant");

    return write_padded(&value, 1, pos);

  }

  template <typename T>

  static u1* write_padded(const T* value, size_t len, u1* pos) {

    assert(value != NULL, "invariant");

    assert(pos != NULL, "invariant");

    assert(len > 0, "invariant");

    return pos + IntegerEncoder::encode_padded(value, len, pos);

  }

  template <typename T>

  static u1* write(T value, u1* pos) {

    return write(&value, 1, pos);

  }

  template <typename T>

  static u1* write(const T* value, size_t len, u1* pos) {

    assert(value != NULL, "invariant");

    assert(pos != NULL, "invariant");

    assert(len > 0, "invariant");

    return pos + IntegerEncoder::encode(value, len, pos);

  }

  static u1* write(bool value, u1* pos) {

    return be_write((u1)value, pos);

  }

  static u1* write(float value, u1* pos) {

    return be_write(*(u4*)&(value), pos);

  }

  static u1* write(double value, u1* pos) {

    return be_write(*(u8*)&(value), pos);

  }

  static u1* write(const char* value, u1* pos) {

    u2 len = 0;

    if (value != NULL) {

      len = MIN2<u2>(max_jushort, (jushort)strlen(value));

    }

    pos = write(len, pos);

    if (len > 0) {

      pos = be_write(value, len, pos);

    }

    return pos;

  }

  static u1* write(char* value, u1* pos) {

    return write(const_cast<const char*>(value), pos);

  }

};

typedef EncoderHost<BigEndianEncoderImpl, BigEndianEncoderImpl> BigEndianEncoder;

typedef EncoderHost<Varint128EncoderImpl, BigEndianEncoderImpl> CompressedIntegerEncoder;