comparison src/range.hpp @ 0:add35537fdbb tip

Initial import

+//  Copyright 2011, Ian Hobson.
+//
+//  This file is part of gpsynth.
+//
+//  gpsynth is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  gpsynth 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 for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with gpsynth in the file COPYING. 
+//  If not, see http://www.gnu.org/licenses/.
+
+#pragma once
+
+#include <ostream>
+
+namespace stdx {
+
+// like std::pair, designed for minimum/maximum
+template<typename T>
+struct Range {
+  T minimum_;
+  T maximum_;
+
+  Range()
+  : minimum_(T()),
+    maximum_(T())
+  {}
+  
+  Range(T minimum, T maximum)
+  : minimum_(minimum),
+    maximum_(maximum)
+  {}
+
+  template<typename T2>
+  Range(const Range<T2>& other)
+  : minimum_(other.minimum_),
+    maximum_(other.maximum_)
+  {}
+
+  // getters / setters
+  T Minimum() const { return minimum_; }
+  T Maximum() const { return maximum_; }
+
+  void SetMinimum(const T& value) { minimum_ = value; }
+  void SetMaximum(const T& value) { maximum_ = value; }
+
+  void SetRange(const T& minimum, const T& maximum) {
+    minimum_ = minimum;
+    maximum_ = maximum;
+  }
+
+  T Size() const { return maximum_ - minimum_; }
+  
+  // Assignment operators
+  template<typename T2>
+  void operator=(const Range<T2>& other) {
+    minimum_ = other.minumum_;
+    maximum_ = other.maximum_;
+  }
+
+  template<typename T2>
+  Range<T>& operator+=(const Range<T2>& other) {
+    minimum_ += other.minimum_;
+    maximum_ += other.maximum_;
+    return *this;
+  }
+  template<typename T2>
+  Range<T>& operator+=(const T2& value) {
+    minimum_ += value;
+    maximum_ += value;
+    return *this;
+  }
+
+  template<typename T2>
+  Range<T>& operator-=(const Range<T2>& other) {
+    minimum_ -= other.minimum_;
+    maximum_ -= other.maximum_;
+    return *this;
+  }
+  template<typename T2>
+  Range<T>& operator-=(const T2& value) {
+    minimum_ -= value;
+    maximum_ -= value;
+    return *this;
+  }
+
+  template<typename T2>
+  Range<T>& operator*=(const T2& value) {
+    minimum_ *= value;
+    maximum_ *= value;
+    return *this;
+  }
+  template<typename T2>
+  Range<T>& operator/=(const T2& value) {
+    minimum_ /= value;
+    maximum_ /= value;
+    return *this;
+  }
+
+
+  // Arithmetic
+  template<typename T2>
+  Range<T> operator+(const T2& value) {
+    return Range<T>(minimum_ + value, maximum_ + value);
+  }
+  template<typename T2>
+  Range<T> operator+(const Range<T2>& other) {
+    return Range<T>(minimum_ + other.minimum_, maximum_ + other.maximum_);
+  }
+
+  template<typename T2>
+  Range<T> operator-(const T2& value) {
+    return Range<T>(minimum_ - value, maximum_ - value);
+  }
+  template<typename T2>
+  Range<T> operator-(const Range<T2>& other) {
+    return Range<T>(minimum_ - other.minimum_, maximum_ - other.maximum_);
+  }
+
+  template<typename T2>
+  Range<T> operator*(const T2& value) {
+    return Range<T>(minimum_ * value, maximum_ * value);
+  }
+  template<typename T2>
+  Range<T> operator/(const T2& value) {
+    return Range<T>(minimum_ / value, maximum_ / value);
+  }
+
+  // Increments/Decrements
+  Range<T>& operator++() {
+    ++minimum_;
+    ++maximum_;
+    return *this;
+  }
+  Range<T>& operator--() {
+    --minimum_;
+    --maximum_;
+    return *this;
+  }
+
+  Range<T> operator++(int) {
+    Range<T> temp(*this);
+    ++(*this);
+    return temp;
+  }
+  Range<T> operator--(int) {
+    Range<T> temp(*this);
+    --(*this);
+    return temp;
+  }
+
+};
+
+// Comparison operators
+template<typename T>
+bool operator==(const Range<T>& x, const Range<T>& y) {
+  return (x.minimum_ == y.minimum_) && (x.maximum_ == y.maximum_);
+}
+
+template<typename T>
+bool operator<(const Range<T>& x, const Range<T>& y) {
+  return (x.minimum_ < y.minimum_)
+         || (!(y.minimum_ < x.minimum_) && (x.maximum_ < y.maximum_));
+}
+
+template<typename T>
+bool operator!=(const Range<T>& x, const Range<T>& y) {
+  return !(x == y);
+}
+
+template<typename T>
+bool operator>(const Range<T>& x, const Range<T>& y) {
+  return y < x;
+}
+
+template<typename T>
+bool operator<=(const Range<T>& x, const Range<T>& y) {
+  return !(y < x);
+}
+
+template<typename T>
+bool operator>=(const Range<T>& x, const Range<T>& y) {
+  return !(x < y);
+}
+
+// Output
+template<typename T>
+std::ostream& operator<<(std::ostream& out, const Range<T>& range) {
+  out << '[' << range.minimum_ << ',' << range.maximum_ << ']';
+  return out;
+}
+
+} // stdx namespace
+