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 adorian
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#ifndef SEQUENCE_SEQUENCE_H
#define SEQUENCE_SEQUENCE_H
#include "../shared/function.h"
#include "sequence_context.h"
#include <assert.h>
namespace Sequence {
class Sequence : public Shared::Function {
public:
enum class Type {
Explicit = 0,
SingleRecurrence = 1,
DoubleRecurrence = 2
};
Sequence(const char * text = nullptr, KDColor color = KDColorBlack);
~Sequence();
Sequence& operator=(const Sequence& other);
//Sequence& operator=(Sequence&& other) = delete;
Sequence(const Sequence& other) = delete;
Sequence(Sequence&& other) = delete;
uint32_t checksum() override;
Type type();
int initialRank() const {
return m_initialRank;
}
const char * firstInitialConditionText();
const char * secondInitialConditionText();
Poincare::Expression * firstInitialConditionExpression(Poincare::Context * context) const;
Poincare::Expression * secondInitialConditionExpression(Poincare::Context * context) const;
Poincare::ExpressionLayout * firstInitialConditionLayout();
Poincare::ExpressionLayout * secondInitialConditionLayout();
/* WARNING: after calling setType, setContent, setFirstInitialConditionContent
* or setSecondInitialConditionContent, the sequence context needs to
* invalidate the cache because the sequences evaluations might have changed. */
void setType(Type type);
void setInitialRank(int rank);
void setFirstInitialConditionContent(const char * c);
void setSecondInitialConditionContent(const char * c);
int numberOfElements();
Poincare::ExpressionLayout * nameLayout();
Poincare::ExpressionLayout * definitionName();
Poincare::ExpressionLayout * firstInitialConditionName();
Poincare::ExpressionLayout * secondInitialConditionName();
bool isDefined() override;
bool isEmpty() override;
float evaluateAtAbscissa(float x, Poincare::Context * context) const override {
return templatedApproximateAtAbscissa(x, static_cast<SequenceContext *>(context));
}
double evaluateAtAbscissa(double x, Poincare::Context * context) const override {
return templatedApproximateAtAbscissa(x, static_cast<SequenceContext *>(context));
}
template<typename T> T approximateToNextRank(int n, SequenceContext * sqctx) const;
double sumBetweenBounds(double start, double end, Poincare::Context * context) const override;
void tidy() override;
constexpr static int k_initialRankNumberOfDigits = 3; // m_initialRank is capped by 999
private:
constexpr static double k_maxNumberOfTermsInSum = 100000.0;
constexpr static size_t k_dataLengthInBytes = (3*TextField::maxBufferSize()+3)*sizeof(char)+sizeof(int)+1;
static_assert((k_dataLengthInBytes & 0x3) == 0, "The sequence data size is not a multiple of 4 bytes (cannot compute crc)"); // Assert that dataLengthInBytes is a multiple of 4
char symbol() const override;
template<typename T> T templatedApproximateAtAbscissa(T x, SequenceContext * sqctx) const;
Type m_type;
char m_firstInitialConditionText[TextField::maxBufferSize()];
char m_secondInitialConditionText[TextField::maxBufferSize()];
mutable Poincare::Expression * m_firstInitialConditionExpression;
mutable Poincare::Expression * m_secondInitialConditionExpression;
Poincare::ExpressionLayout * m_firstInitialConditionLayout;
Poincare::ExpressionLayout * m_secondInitialConditionLayout;
Poincare::ExpressionLayout * m_nameLayout;
Poincare::ExpressionLayout * m_definitionName;
Poincare::ExpressionLayout * m_firstInitialConditionName;
Poincare::ExpressionLayout * m_secondInitialConditionName;
int m_initialRank;
};
}
#endif
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