#include "function.h"
  #include <string.h>
  #include <cmath>
  #include <assert.h>
  
  using namespace Poincare;
  
  namespace Shared {
  
  Function::Function(const char * name, KDColor color) :
    ExpressionModel(),
    m_name(name),
    m_color(color),
    m_active(true)
  {
  }
  
  uint32_t Function::checksum() {
    char data[k_dataLengthInBytes/sizeof(char)] = {};
    strlcpy(data, text(), TextField::maxBufferSize());
    data[k_dataLengthInBytes-2] = m_name != nullptr ? m_name[0] : 0;
    data[k_dataLengthInBytes-1] = m_active ? 1 : 0;
    return Ion::crc32((uint32_t *)data, k_dataLengthInBytes/sizeof(uint32_t));
  }
  
  void Function::setColor(KDColor color) {
    m_color = color;
  }
  
  const char * Function::name() const {
    return m_name;
  }
  
  bool Function::isActive() {
    return m_active;
  }
  
  void Function::setActive(bool active) {
    m_active = active;
  }
  
  template<typename T>
  T Function::templatedApproximateAtAbscissa(T x, Poincare::Context * context) const {
    return expression(context)->approximateWithValueForSymbol(symbol(), x, *context, Preferences::sharedPreferences()->angleUnit());
  }
  
  }
  
  template float Shared::Function::templatedApproximateAtAbscissa<float>(float, Poincare::Context*) const;
  template double Shared::Function::templatedApproximateAtAbscissa<double>(double, Poincare::Context*) const;