#ifndef SMILTime_h
#define SMILTime_h
#include "wtf/Assertions.h"
#include "wtf/MathExtras.h"
namespace WebCore {
class SMILTime {
public:
SMILTime() : m_time(0) { }
SMILTime(double time) : m_time(time) { ASSERT(!std::isnan(time)); }
SMILTime(const SMILTime& o) : m_time(o.m_time) { }
static SMILTime unresolved() { return unresolvedValue; }
static SMILTime indefinite() { return indefiniteValue; }
SMILTime& operator=(const SMILTime& o) { m_time = o.m_time; return *this; }
double value() const { return m_time; }
bool isFinite() const { return m_time < indefiniteValue; }
bool isIndefinite() const { return m_time == indefiniteValue; }
bool isUnresolved() const { return m_time == unresolvedValue; }
private:
static const double unresolvedValue;
static const double indefiniteValue;
double m_time;
};
class SMILTimeWithOrigin {
public:
enum Origin {
ParserOrigin,
ScriptOrigin
};
SMILTimeWithOrigin()
: m_origin(ParserOrigin)
{
}
SMILTimeWithOrigin(const SMILTime& time, Origin origin)
: m_time(time)
, m_origin(origin)
{
}
const SMILTime& time() const { return m_time; }
bool originIsScript() const { return m_origin == ScriptOrigin; }
private:
SMILTime m_time;
Origin m_origin;
};
inline bool operator==(const SMILTime& a, const SMILTime& b) { return a.isFinite() && a.value() == b.value(); }
inline bool operator!(const SMILTime& a) { return !a.isFinite() || !a.value(); }
inline bool operator!=(const SMILTime& a, const SMILTime& b) { return !operator==(a, b); }
inline bool operator>(const SMILTime& a, const SMILTime& b) { return a.value() > b.value(); }
inline bool operator<(const SMILTime& a, const SMILTime& b) { return a.value() < b.value(); }
inline bool operator>=(const SMILTime& a, const SMILTime& b) { return a.value() > b.value() || operator==(a, b); }
inline bool operator<=(const SMILTime& a, const SMILTime& b) { return a.value() < b.value() || operator==(a, b); }
inline bool operator<(const SMILTimeWithOrigin& a, const SMILTimeWithOrigin& b) { return a.time() < b.time(); }
SMILTime operator+(const SMILTime&, const SMILTime&);
SMILTime operator-(const SMILTime&, const SMILTime&);
SMILTime operator*(const SMILTime&, const SMILTime&);
}
#endif