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// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_SVG_ANIMATION_SMIL_REPEAT_COUNT_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_SVG_ANIMATION_SMIL_REPEAT_COUNT_H_
#include <cmath>
#include <limits>
#include "base/logging.h"
namespace blink {
// Representation of the value from the 'repeatCount' SMIL attribute.
//
// "Unspecified" is used to indicate that the attribute is not specified.
// "Invalid" is used to indicate that the attribute may have changed and needs
// to be reparsed.
class SMILRepeatCount {
public:
static SMILRepeatCount Unspecified() {
return SMILRepeatCount(std::numeric_limits<double>::quiet_NaN());
}
static SMILRepeatCount Indefinite() {
return SMILRepeatCount(std::numeric_limits<double>::infinity());
}
static SMILRepeatCount Numeric(double value) {
DCHECK(std::isfinite(value));
DCHECK_GT(value, 0);
return SMILRepeatCount(value);
}
static SMILRepeatCount Invalid() {
return SMILRepeatCount(-std::numeric_limits<double>::infinity());
}
bool IsValid() const {
return value_ != -std::numeric_limits<double>::infinity();
}
bool IsUnspecified() const {
DCHECK(IsValid());
return std::isnan(value_);
}
bool IsIndefinite() const {
DCHECK(IsValid());
return std::isinf(value_);
}
double NumericValue() const {
DCHECK(!IsUnspecified());
DCHECK(!IsIndefinite());
DCHECK(IsValid());
return value_;
}
private:
explicit SMILRepeatCount(double value) : value_(value) {}
double value_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_SVG_ANIMATION_SMIL_REPEAT_COUNT_H_
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