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31 lines
822 B
C++
31 lines
822 B
C++
#include "evaluate_context.h"
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#include <string.h>
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namespace Calculation {
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EvaluateContext::EvaluateContext(::Context * parentContext, CalculationStore * calculationStore) :
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m_ansValue(nullptr),
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m_calculationStore(calculationStore),
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m_context(parentContext)
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{
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}
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Expression * EvaluateContext::ansValue() {
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if (m_calculationStore->numberOfCalculations() == 0) {
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return defaultExpression();
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}
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Calculation * lastCalculation = m_calculationStore->calculationAtIndex(m_calculationStore->numberOfCalculations()-1);
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m_ansValue = lastCalculation->output();
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return m_ansValue;
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}
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const Expression * EvaluateContext::expressionForSymbol(const Symbol * symbol) {
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if (symbol->name() == Symbol::SpecialSymbols::Ans) {
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return ansValue();
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} else {
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return m_context->expressionForSymbol(symbol);
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}
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}
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}
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