property.h

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// g2o - General Graph Optimization
// Copyright (C) 2011 R. Kuemmerle, G. Grisetti, W. Burgard
// 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.
//
// 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
// HOLDER 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 G2O_PROPERTY_H_
#define G2O_PROPERTY_H_
 
#include <map>
#include <sstream>
#include <string>
 
#include "g2o_stuff_api.h"
#include "string_tools.h"
 
namespace g2o {
 
class G2O_STUFF_API BaseProperty {
 public:
  BaseProperty(const std::string& name_);
  virtual ~BaseProperty();
  const std::string& name() { return _name; }
  virtual std::string toString() const = 0;
  virtual bool fromString(const std::string& s) = 0;
 
 protected:
  std::string _name;
};
 
template <typename T>
class Property : public BaseProperty {
 public:
  typedef T ValueType;
  Property(const std::string& name_) : BaseProperty(name_) {}
  Property(const std::string& name_, const T& v)
      : BaseProperty(name_), _value(v) {}
  void setValue(const T& v) { _value = v; }
  const T& value() const { return _value; }
  virtual std::string toString() const {
    std::stringstream sstr;
    sstr << _value;
    return sstr.str();
  }
  virtual bool fromString(const std::string& s) {
    bool status = convertString(s, _value);
    return status;
  }
 
 protected:
  T _value;
};
 
class G2O_STUFF_API PropertyMap
    : protected std::map<std::string, BaseProperty*> {
 public:
  typedef std::map<std::string, BaseProperty*> BaseClass;
  typedef BaseClass::iterator PropertyMapIterator;
  typedef BaseClass::const_iterator PropertyMapConstIterator;
 
  ~PropertyMap();
 
  bool addProperty(BaseProperty* p);
 
  bool eraseProperty(const std::string& name_);
 
  template <typename P>
  P* getProperty(const std::string& name_) {
    PropertyMapIterator it = find(name_);
    if (it == end()) return nullptr;
    return dynamic_cast<P*>(it->second);
  }
  template <typename P>
  const P* getProperty(const std::string& name_) const {
    PropertyMapConstIterator it = find(name_);
    if (it == end()) return nullptr;
    return dynamic_cast<P*>(it->second);
  }
 
  template <typename P>
  P* makeProperty(const std::string& name_, const typename P::ValueType& v) {
    PropertyMapIterator it = find(name_);
    if (it == end()) {
      P* p = new P(name_, v);
      addProperty(p);
      return p;
    } else
      return dynamic_cast<P*>(it->second);
  }
 
  bool updatePropertyFromString(const std::string& name,
                                const std::string& value);
 
  bool updateMapFromString(const std::string& values);
 
  void writeToCSV(std::ostream& os) const;
 
  using BaseClass::begin;
  using BaseClass::const_iterator;
  using BaseClass::end;
  using BaseClass::iterator;
  using BaseClass::size;
};
 
typedef Property<int> IntProperty;
typedef Property<bool> BoolProperty;
typedef Property<float> FloatProperty;
typedef Property<double> DoubleProperty;
typedef Property<std::string> StringProperty;
 
}  // namespace g2o
#endif