ExpressionParser.h

#pragma once
 
#include "FLArray.h"
#include "FLString.h"
 
#include <functional>
 
namespace FLImaging
{
    namespace Base
    {
        class CInternalExpressionParser;
 
        class FL_EXPORT CExpressionParser : public CFLBase
        {
        public:
            CExpressionParser();
 
            CExpressionParser(const CExpressionParser& parser);
 
            CExpressionParser(const CExpressionParser* pParser);
 
            virtual ~CExpressionParser();
 
            const CExpressionParser& operator=(const CExpressionParser& parser);
 
            void Clear();
 
            const CResult Assign(const CExpressionParser& parser);
 
            const CResult Assign(const CExpressionParser* pParser);
 
            const CResult GetExpression(CFLString<wchar_t>& strExpression) const;
 
            const CResult GetExpression(CFLString<wchar_t>* pStrExpression) const;
 
            const CResult SetExpression(const CFLString<wchar_t>& strExpression);
 
            const CResult SetExpression(const CFLString<wchar_t>* pStrExpression);
 
            const CResult Parse();
 
            int64_t GetVariableCount() const;
 
            const CResult GetVariableName(int64_t i64Index, CFLString<wchar_t>& strVariableName) const;
 
            const CResult GetVariableName(int64_t i64Index, CFLString<wchar_t>* pStrVariableName) const;
 
            const CResult GetVariableValue(int64_t i64Index, double& f64VariableValue) const;
 
            const CResult GetVariableValue(int64_t i64Index, double* pF64VariableValue) const;
 
            const CResult GetVariableString(int64_t i64Index, CFLString<wchar_t>& strVariableString) const;
 
            const CResult GetVariableString(int64_t i64Index, CFLString<wchar_t>* pStrVariableString) const;
 
            const CResult SetVariableValue(int64_t i64Index, double f64VariableValue);
 
            const CResult SetVariableString(int64_t i64Index, const CFLString<wchar_t>& strVariableString);
 
 
            const CResult Evaluate(double& f64Result) const;
 
            const CResult Evaluate(double* pF64Result) const;
 
 
            const CResult GetPostfix(CFLArray<CFLString<wchar_t>>& flaStrPostfix) const;
 
            const CResult GetPostfix(CFLArray<CFLString<wchar_t>>* pFlaStrPostfix) const;
 
 
            const CResult GetLastErrorSymbol(CFLString<wchar_t>& strErrorSymbol);
 
            const CResult AddUserDefinedFunction(const CFLString<wchar_t>& strFunctionName, std::function<const CResult(const CFLString<wchar_t>&, double&)> lmdFunctionImplement);
 
 
            DeclareGetClassType();
 
        private:
 
            CFLString<wchar_t> m_strExpression;
 
            CInternalExpressionParser* m_pInternal;
            friend class CInternalExpressionParser;
        };
    }
}