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a9c633a540
Added several triggers to clear the cache when the function's type, range or content is changed. Change-Id: I4f49a90bb6571e335a4a601723d7715b8de1e25e
44 lines
2.1 KiB
C++
44 lines
2.1 KiB
C++
#ifndef SHARED_EXPRESSION_MODEL_HANDLE_H
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#define SHARED_EXPRESSION_MODEL_HANDLE_H
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#include "expression_model.h"
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namespace Shared {
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//ExpressionModelHandle is a handle for Ion::Record
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class ExpressionModelHandle : public Ion::Storage::Record {
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public:
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ExpressionModelHandle(Ion::Storage::Record record = Ion::Storage::Record());
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virtual CodePoint symbol() const { return 0; }
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// Property
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void text(char * buffer, size_t bufferSize) const { return model()->text(this, buffer, bufferSize, symbol()); }
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virtual Poincare::Expression expressionReduced(Poincare::Context * context) const { return model()->expressionReduced(this, context); }
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Poincare::Expression expressionClone() const { return model()->expressionClone(this); }
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Poincare::Layout layout() { return model()->layout(this, symbol()); }
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/* Here, isDefined is the exact contrary of isEmpty. However, for Sequence
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* inheriting from ExpressionModelHandle, isEmpty and isDefined have not exactly
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* opposite meaning. For instance, u(n+1)=u(n) & u(0) = ... is not empty and
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* not defined. We thus have to keep both methods. */
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virtual bool isDefined();
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virtual bool isEmpty();
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virtual bool shouldBeClearedBeforeRemove() { return !isEmpty(); }
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/* tidy is responsible to tidy the whole model whereas tidyExpressionModel
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* tidies only the members associated with the ExpressionModel. In
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* ExpressionModel, tidy and tidyExpressionModel trigger the same
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* behaviour but it is not true for its child classes (for example, in
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* Sequence). */
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virtual void tidy() { model()->tidy(); }
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virtual Ion::Storage::Record::ErrorStatus setContent(const char * c, Poincare::Context * context) { return editableModel()->setContent(this, c, context, symbol()); }
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Ion::Storage::Record::ErrorStatus setExpressionContent(const Poincare::Expression & e) { return editableModel()->setExpressionContent(this, e); }
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protected:
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ExpressionModel * editableModel() { return const_cast<ExpressionModel *>(model()); }
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virtual const ExpressionModel * model() const = 0;
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virtual size_t metaDataSize() const = 0;
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};
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}
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#endif
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