root/trunk/whisperlib/net/rpc/lib/types/rpc_array.h

// Copyright (c) 2009, Whispersoft s.r.l.
// 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 Whispersoft s.r.l. 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,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Author: Cosmin Tudorache

#ifndef __NET_RPC_LIB_TYPES_RPC_ARRAY_H__
#define __NET_RPC_LIB_TYPES_RPC_ARRAY_H__

#include <string>
#include <vector>
#include <whisperlib/common/base/types.h>
#include <whisperlib/common/base/log.h>
#include <whisperlib/net/rpc/lib/types/rpc_object.h>

// T must be a superclass of rpc::Object.
// T must have an implicit constructor with 0 arguments.
// T must have an implicit constructor with 1 arguments: T(const T&).
// T must implement static function: static const char* T::Name() {
//             .. return type name for T .. }.

namespace rpc {

template <typename T>
class Array
    : public Object {
 public:
  inline static const char* Name() {
    return RPC_TYPENAME_ARRAY;
  }

 public:
  explicit Array(uint32 size = 0)
      : Object(), vector_(size) {
  }
  Array(const Array<T>& arr)
      : Object(), vector_(arr.vector_) {
  }
  virtual ~Array() {
  }

  uint32 Size() const {
    return vector_.size();
  }

  const vector<T>& Get() const { return vector_; }

  T& Get(uint32 index) {
    CHECK_LT(index, Size());
    return vector_[index];
  }
  const T& Get(uint32 index) const {
    CHECK_LT(index, Size());
    return vector_[index];
  }
  void Set(uint32 index, const T& value) {
    CHECK_LT(index, Size());
    vector_[index] = value;
  }
  void Append(const T& value) {
    Resize(Size() + 1);
    Set(Size() - 1, value);
  }
  void Append(const Array<T>& v) {
    const uint32 old_size = Size();
    const uint32 v_size = v.Size();
    Resize(old_size + v_size);
    for ( uint32 i = 0; i < v_size; i++ ) {
      Set(old_size + i, v.Get(i));
    }
  }
  T& operator[](uint32 index) {
    return Get(index);
  }
  const T& operator[](uint32 index) const {
    return Get(index);
  }
  Array<T>& operator=(const Array<T>& v) {
    vector_ = v.vector_;
    return *this;
  }

  bool operator==(const Array<T>& v) const {
    return vector_ == v.vector_;
  }
  bool operator!=(const Array<T>& v) const {
    return !operator==(v);
  }

  void Clear() {
    vector_.clear();
  }

  void PushBack(const T& value) {
    vector_.push_back(value);
  }

  void Resize(uint32 newsize) {
    vector_.resize(newsize);
    LOG_DEBUG << "rpc::Vector resizing to " << newsize << " elements."
              << " Capacity has become: " << vector_.capacity()
              << " While size is: " << vector_.size();
  }

  //////////////////////////////////////////////////////////////////////
  //
  //                rpc::Object interface methods
  //
  Object* Clone() const {
    return new Array<T>(*this);
  }
  string ToString() const {
    uint32 count = Size();
    string text(
        strutil::StringPrintf(
            "Array (of \"%s\", #%lu/%lu): {",
            T::Name(),
            static_cast<long unsigned int>(count),
            static_cast<long unsigned int>(vector_.capacity())));

    if ( count == 0 ) {
      return text + "}";
    }

    for ( uint32 i = 0; i < count - 1; i++ ) {
      const T& obj = Get(i);
      text += obj.ToString() + ", ";
    }
    text += Get(count - 1).ToString() + "}";

    return text;
  }

  virtual void Encode(io::MemoryStream& result, Codec& codec) const;
 private:
  vector<T> vector_;
};
}
#endif  //  __NET_RPC_LIB_TYPES_RPC_ARRAY_H__