cExpressionBase.h

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//
//
 
#ifndef _INC_cExpressionBase_H
#define _INC_cExpressionBase_H
#ifndef NO_PRAGMA_ONCE
#pragma once
#endif
 
#include "../GrayLibBase.h"
#include "../Variant/cVariant.h"
 
namespace GrayLib
{
        struct cExpressionTest
        {
                VARTYPE_TYPE m_eValType;                // what type should it be.
                const ATOMCHAR_t* m_pszExp;             // the source expression.
                const ATOMCHAR_t* m_pszVal;             // evaluated to this.
        };
 
        class GRAYLIB_LINK cExpressionBase
        {
 
        public:
                static const ATOMCHAR_t k_ArrayOpen = '[';      // STR_BLOCK_SQUARE
                static const ATOMCHAR_t k_ArrayClose = ']';
                static const ATOMCHAR_t k_MapOpen = '{';                // STR_BLOCK_CURLY
                static const ATOMCHAR_t k_MapClose = '}';
 
        public:
                IGNORE_WARN_ABSTRACT(cExpressionBase);
 
                static bool GRAYCALL IsParenNeeded(const ATOMCHAR_t* pszExp);
 
                static HRESULT GRAYCALL GetStringRefQ(const ATOMCHAR_t*& rpszExp, OUT cStringA& rsRet);
                static HRESULT GRAYCALL GetStringRefV(const ATOMCHAR_t*& rpszExp, OUT cVariant& rvValRet);
 
                HRESULT GetArrayListRef(const ATOMCHAR_t*& rpszExp, OUT cVariant& vValRet, ITERATE_t nAppendStart=0);
                HRESULT GetArrayRef(const ATOMCHAR_t*& rpszExp, OUT cVariant& vValRet, ITERATE_t nAppendStart =0);
 
                static HRESULT GRAYCALL GetMapElementName(const ATOMCHAR_t*& rpszExp, OUT cStringA& rsName);
 
                HRESULT GetMapListRef(const ATOMCHAR_t*& rpszExp, OUT cVarMap& rMapRet);
                HRESULT GetMapRef(const ATOMCHAR_t*& rpszExp, OUT cVarMap& rMapRet);
                HRESULT GetMapListRef(const ATOMCHAR_t*& rpszExp, OUT cVariant& rMapRet);
                HRESULT GetMapRef(const ATOMCHAR_t*& rpszExp, OUT cVariant& vValRet);
 
                static HRESULT GRAYCALL GetSimpleVarRef(const ATOMCHAR_t*& rpszExp, OUT cVariant& vValRet);
 
                virtual HRESULT GetVarRef2(const ATOMCHAR_t*& rpszExp, OUT cVariant& vValRet, bool bInArray);
 
                cVariant GetVarRef(const ATOMCHAR_t*& rpszExp)
                {
                        cVariant vValRet;
                        HRESULT hRes = GetVarRef2(rpszExp, vValRet, false);
                        UNREFERENCED_PARAMETER(hRes);
                        return vValRet;
                }
                HRESULT GetVar(const ATOMCHAR_t* pszExp, OUT cVariant& vValRet)
                {
                        return GetVarRef2(pszExp, vValRet, false);
                }
                cVariant GetVar(const ATOMCHAR_t* pszExp)
                {
                        return GetVarRef(pszExp);
                }
 
                UNITTEST_FRIEND(cExpressionBase);
        };
}
 
#endif