MathExpression.h

#pragma once
 
#include <Foundation/CodeUtils/Expression/ExpressionByteCode.h>
#include <Foundation/CodeUtils/Expression/ExpressionVM.h>
#include <Foundation/Strings/String.h>
 
class plLogInterface;
 
class PL_FOUNDATION_DLL plMathExpression
{
public:
  plMathExpression();
 
  explicit plMathExpression(plStringView sExpressionString); // [tested]
 
  void Reset(plStringView sExpressionString);
 
  bool IsValid() const { return m_bIsValid; }
 
  plStringView GetExpressionString() const { return m_sOriginalExpression; }
 
  struct Input
  {
    plHashedString m_sName;
    float m_fValue;
  };
 
  float Evaluate(plArrayPtr<Input> inputs = plArrayPtr<Input>()); // [tested]
 
private:
  plHashedString m_sOriginalExpression;
  bool m_bIsValid = false;
 
  plExpressionByteCode m_ByteCode;
  plExpressionVM m_VM;
};