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\hypertarget{xbexp_8h_source}{}\doxysection{xbexp.\+h}
\label{xbexp_8h_source}\index{/mnt/1Tdata/xbase/xbase64-\/4.0.3/src/include/xbexp.h@{/mnt/1Tdata/xbase/xbase64-\/4.0.3/src/include/xbexp.h}}
\mbox{\hyperlink{xbexp_8h}{Go to the documentation of this file.}}
\begin{DoxyCode}{0}
\DoxyCodeLine{1 \textcolor{comment}{/* xbexp.h}}
\DoxyCodeLine{2 \textcolor{comment}{}}
\DoxyCodeLine{3 \textcolor{comment}{XBase64 Software Library}}
\DoxyCodeLine{4 \textcolor{comment}{}}
\DoxyCodeLine{5 \textcolor{comment}{Copyright (c) 1997,2003,2014,2022 Gary A Kunkel}}
\DoxyCodeLine{6 \textcolor{comment}{}}
\DoxyCodeLine{7 \textcolor{comment}{The xb64 software library is covered under the terms of the GPL Version 3, 2007 license.}}
\DoxyCodeLine{8 \textcolor{comment}{}}
\DoxyCodeLine{9 \textcolor{comment}{Email Contact:}}
\DoxyCodeLine{10 \textcolor{comment}{}}
\DoxyCodeLine{11 \textcolor{comment}{ XDB-\/devel@lists.sourceforge.net}}
\DoxyCodeLine{12 \textcolor{comment}{ XDB-\/users@lists.sourceforge.net}}
\DoxyCodeLine{13 \textcolor{comment}{}}
\DoxyCodeLine{14 \textcolor{comment}{*/}}
\DoxyCodeLine{15 }
\DoxyCodeLine{16 }
\DoxyCodeLine{17 \textcolor{preprocessor}{\#ifndef \_\_XB\_EXP\_H\_\_}}
\DoxyCodeLine{18 \textcolor{preprocessor}{\#define \_\_XB\_EXP\_H\_\_}}
\DoxyCodeLine{19 }
\DoxyCodeLine{20 }
\DoxyCodeLine{21 \textcolor{comment}{// \#ifdef CMAKE\_COMPILER\_IS\_GNUCC}}
\DoxyCodeLine{22 \textcolor{comment}{// \#pragma interface}}
\DoxyCodeLine{23 \textcolor{comment}{// \#endif}}
\DoxyCodeLine{24 }
\DoxyCodeLine{25 }
\DoxyCodeLine{26 }
\DoxyCodeLine{27 \textcolor{preprocessor}{\#ifdef XB\_FUNCTION\_SUPPORT}}
\DoxyCodeLine{28 \textcolor{preprocessor}{\#define XB\_EXP\_CHAR 'C'}}
\DoxyCodeLine{29 \textcolor{preprocessor}{\#define XB\_EXP\_DATE 'D'}}
\DoxyCodeLine{30 \textcolor{preprocessor}{\#define XB\_EXP\_LOGICAL 'L'}}
\DoxyCodeLine{31 \textcolor{preprocessor}{\#define XB\_EXP\_NUMERIC 'N'}}
\DoxyCodeLine{32 \textcolor{preprocessor}{\#define XB\_EXP\_UNKNOWN 'U'}}
\DoxyCodeLine{33 \textcolor{preprocessor}{\#endif}}
\DoxyCodeLine{34 }
\DoxyCodeLine{35 \textcolor{preprocessor}{\#ifdef XB\_EXPRESSION\_SUPPORT}}
\DoxyCodeLine{36 }
\DoxyCodeLine{37 \textcolor{preprocessor}{\#define XB\_EXP\_CONSTANT 'C'}}
\DoxyCodeLine{38 \textcolor{preprocessor}{\#define XB\_EXP\_FUNCTION 'F'}}
\DoxyCodeLine{39 \textcolor{preprocessor}{\#define XB\_EXP\_FIELD 'D'}}
\DoxyCodeLine{40 \textcolor{preprocessor}{\#define XB\_EXP\_OPERATOR 'O'}}
\DoxyCodeLine{41 \textcolor{preprocessor}{\#define XB\_EXP\_NOTROOT 'N' }\textcolor{comment}{// not root node, needs further parsing}}
\DoxyCodeLine{42 \textcolor{preprocessor}{\#define XB\_EXP\_PRE\_OPERATOR 'B' }\textcolor{comment}{// (B)efore) pre increment, pre decrement}}
\DoxyCodeLine{43 \textcolor{preprocessor}{\#define XB\_EXP\_POST\_OPERATOR 'A' }\textcolor{comment}{// (A)fter) post increment, pre decrement}}
\DoxyCodeLine{44 }
\DoxyCodeLine{45 \textcolor{preprocessor}{\#define XB\_END\_OF\_EXPRESSION -\/100}}
\DoxyCodeLine{46 }
\DoxyCodeLine{47 \textcolor{comment}{// \#define XB\_UNBALANCED\_PARENS -\/101}}
\DoxyCodeLine{48 \textcolor{comment}{// \#define XB\_UNBALANCED\_QUOTES -\/102}}
\DoxyCodeLine{49 }
\DoxyCodeLine{50 }
\DoxyCodeLine{51 \textcolor{keyword}{namespace }\mbox{\hyperlink{namespacexb}{xb}}\{}
\DoxyCodeLine{52 }
\DoxyCodeLine{54 \textcolor{keyword}{struct }XBDLLEXPORT xbExpToken \{}
\DoxyCodeLine{55 xbString sExpression; \textcolor{comment}{// in -\/ expression to pull next token from}}
\DoxyCodeLine{56 \textcolor{comment}{// out -\/ remainder of the expression after token removed}}
\DoxyCodeLine{57 xbString sToken; \textcolor{comment}{// next token pulled from the expression}}
\DoxyCodeLine{58 \textcolor{keywordtype}{char} cNodeType; \textcolor{comment}{// one of XB\_EXP\_CONSTANT, XB\_EXP\_FUNCTION, XB\_EXP\_FIELD, XB\_EXP\_OPERATOR, XB\_EXP\_NOTROOT}}
\DoxyCodeLine{59 \textcolor{keywordtype}{char} cReturnType; \textcolor{comment}{// one of XB\_EXP\_CHAR, XB\_EXP\_DATE, XB\_EXP\_LOGICAL, XB\_EXP\_NUMERIC, XB\_EXP\_UNKNOWN}}
\DoxyCodeLine{60 xbInt16 iSts; \textcolor{comment}{// return status after retrieving or attempting next token from expression}}
\DoxyCodeLine{61 \textcolor{comment}{// 0 = no error}}
\DoxyCodeLine{62 \textcolor{comment}{// XB\_END\_OF\_EXPRESSION}}
\DoxyCodeLine{63 \textcolor{comment}{// XB\_UNBALANCED\_PARENS}}
\DoxyCodeLine{64 \textcolor{comment}{// XB\_UNBALANCED\_QUOTES}}
\DoxyCodeLine{65 \textcolor{keywordtype}{char} cPrevNodeType; \textcolor{comment}{// previous node type}}
\DoxyCodeLine{66 \textcolor{keywordtype}{char} cPrevReturnType; \textcolor{comment}{// previous return type}}
\DoxyCodeLine{67 }
\DoxyCodeLine{68 \textcolor{comment}{// constructor}}
\DoxyCodeLine{69 xbExpToken() \{ cNodeType = 0; cReturnType = 0; iSts = 0; cPrevNodeType = 0; cPrevReturnType = 0; \}}
\DoxyCodeLine{70 \};}
\DoxyCodeLine{72 }
\DoxyCodeLine{73 }
\DoxyCodeLine{74 \textcolor{comment}{/************************************************************************/}}
\DoxyCodeLine{75 }
\DoxyCodeLine{77 }
\DoxyCodeLine{132 \textcolor{keyword}{class }XBDLLEXPORT xbExp\{}
\DoxyCodeLine{133 }
\DoxyCodeLine{134 \textcolor{keyword}{public}:}
\DoxyCodeLine{135 xbExp( \mbox{\hyperlink{namespacexb_a97858ddeb1c4b0100f3edc1a46d3a8b0}{xbXBase}} * );}
\DoxyCodeLine{136 xbExp( \mbox{\hyperlink{namespacexb_a97858ddeb1c4b0100f3edc1a46d3a8b0}{xbXBase}} *, \mbox{\hyperlink{namespacexb_ab2eae4b4732466698a7fdd89d77ba53b}{xbDbf}} * );}
\DoxyCodeLine{137 \textcolor{keyword}{virtual} \string~xbExp();}
\DoxyCodeLine{138 \textcolor{keywordtype}{void} ClearTreeHandle();}
\DoxyCodeLine{139 }
\DoxyCodeLine{140 }
\DoxyCodeLine{141 \textcolor{preprocessor}{ \#ifdef XB\_DEBUG\_SUPPORT}}
\DoxyCodeLine{142 \textcolor{keywordtype}{void} DumpTree( xbInt16 iOption );}
\DoxyCodeLine{143 \textcolor{keywordtype}{void} DumpToken( xbExpToken \&t, xbInt16 iOption = 0 );}
\DoxyCodeLine{144 \textcolor{preprocessor}{ \#endif}}
\DoxyCodeLine{145 }
\DoxyCodeLine{146 xbInt16 GetResultLen() \textcolor{keyword}{const};}
\DoxyCodeLine{147 \textcolor{keywordtype}{char} GetReturnType() \textcolor{keyword}{const};}
\DoxyCodeLine{148 xbInt16 GetBoolResult( \mbox{\hyperlink{namespacexb_ab1a750481dd487f0d384aa1d200dff0f}{xbBool}} \&bResult );}
\DoxyCodeLine{149 xbInt16 GetDateResult( xbDate \&dtResult );}
\DoxyCodeLine{150 xbInt16 GetNumericResult( \mbox{\hyperlink{namespacexb_a25f47b226ce924a5c78f97989b0744a2}{xbDouble}} \&dResult );}
\DoxyCodeLine{151 xbInt16 GetStringResult( xbString \&sResult );}
\DoxyCodeLine{152 xbInt16 GetStringResult( \textcolor{keywordtype}{char} * vpResult, xbUInt32 ulLen );}
\DoxyCodeLine{153 xbExpNode *GetTreeHandle();}
\DoxyCodeLine{154 xbInt16 ParseExpression( \textcolor{keyword}{const} xbString \&sExpression );}
\DoxyCodeLine{155 xbInt16 ParseExpression( \mbox{\hyperlink{namespacexb_ab2eae4b4732466698a7fdd89d77ba53b}{xbDbf}} *dbf, \textcolor{keyword}{const} xbString \&sExpression );}
\DoxyCodeLine{156 xbInt16 ProcessExpression();}
\DoxyCodeLine{157 xbInt16 ProcessExpression( xbInt16 iRecBufSw );}
\DoxyCodeLine{158 }
\DoxyCodeLine{159 }
\DoxyCodeLine{160 \textcolor{keyword}{protected}:}
\DoxyCodeLine{161 xbInt16 GetNextToken( xbExpToken \&t );}
\DoxyCodeLine{162 xbInt16 OperatorWeight( \textcolor{keyword}{const} xbString \&sOperator );}
\DoxyCodeLine{163 xbExpNode *GetNextNode( xbExpNode * n ) \textcolor{keyword}{const}; \textcolor{comment}{// traverses the tree from bottom left node, right, then up}}
\DoxyCodeLine{164 }
\DoxyCodeLine{165 \textcolor{keyword}{private}: \textcolor{comment}{// methods}}
\DoxyCodeLine{166 }
\DoxyCodeLine{167 \textcolor{comment}{// xbInt16 CalcExpressionResultLen();}}
\DoxyCodeLine{168 xbInt16 CalcFunctionResultLen( xbExpNode *n ) \textcolor{keyword}{const};}
\DoxyCodeLine{169 xbInt16 CalcCharNodeLen( xbExpNode *n );}
\DoxyCodeLine{170 xbInt16 CheckParensAndQuotes( \textcolor{keyword}{const} xbString \&sExpression );}
\DoxyCodeLine{171 xbInt16 GetExpressionResultLen() \textcolor{keyword}{const};}
\DoxyCodeLine{172 }
\DoxyCodeLine{173 xbInt16 GetTokenCharConstant ( xbExpToken \&t );}
\DoxyCodeLine{174 xbInt16 GetTokenDatabaseField ( xbExpToken \&t );}
\DoxyCodeLine{175 xbInt16 GetTokenDateConstant ( xbExpToken \&t );}
\DoxyCodeLine{176 xbInt16 GetTokenFunction ( xbExpToken \&t );}
\DoxyCodeLine{177 xbInt16 GetTokenLogicalConstant( xbExpToken \&t );}
\DoxyCodeLine{178 xbInt16 GetTokenNumericConstant( xbExpToken \&t );}
\DoxyCodeLine{179 xbInt16 GetTokenOperator ( xbExpToken \&t );}
\DoxyCodeLine{180 xbInt16 GetTokenParen ( xbExpToken \&t );}
\DoxyCodeLine{181 }
\DoxyCodeLine{182 \mbox{\hyperlink{namespacexb_ab1a750481dd487f0d384aa1d200dff0f}{xbBool}} IsFunction ( \textcolor{keyword}{const} xbString \&sExp, \textcolor{keywordtype}{char} \&cReturnType );}
\DoxyCodeLine{183 \mbox{\hyperlink{namespacexb_ab1a750481dd487f0d384aa1d200dff0f}{xbBool}} IsLogicalConstant ( \textcolor{keyword}{const} xbString \&sExp );}
\DoxyCodeLine{184 \mbox{\hyperlink{namespacexb_ab1a750481dd487f0d384aa1d200dff0f}{xbBool}} IsNumericConstant ( \textcolor{keyword}{const} xbString \&sExp, \textcolor{keywordtype}{char} cPrevNodeType );}
\DoxyCodeLine{185 \mbox{\hyperlink{namespacexb_ab1a750481dd487f0d384aa1d200dff0f}{xbBool}} IsOperator ( \textcolor{keyword}{const} xbString \&sExp );}
\DoxyCodeLine{186 \textcolor{keywordtype}{char} IsTokenSeparator ( \textcolor{keywordtype}{char} c );}
\DoxyCodeLine{187 \mbox{\hyperlink{namespacexb_ab1a750481dd487f0d384aa1d200dff0f}{xbBool}} IsWhiteSpace ( \textcolor{keywordtype}{char} c );}
\DoxyCodeLine{188 }
\DoxyCodeLine{189 xbInt16 ParseExpression ( \textcolor{keyword}{const} xbString \&sExpression, xbInt16 iWeight );}
\DoxyCodeLine{190 xbInt16 ParseExpressionConstant( xbExpToken \&t, xbExpNode *n );}
\DoxyCodeLine{191 xbInt16 ParseExpressionFunction( xbExpToken \&t, xbExpNode *n, xbInt16 iWeight );}
\DoxyCodeLine{192 xbInt16 ParseExpressionFunctionParms( \textcolor{keyword}{const} xbString \&sParms, xbLinkList<xbString> \&llParms );}
\DoxyCodeLine{193 xbInt16 ParseExpressionField ( xbExpToken \&t, xbExpNode *n );}
\DoxyCodeLine{194 xbInt16 ParseExpressionOperator( xbExpToken \&t, xbExpNode *n, xbInt16 iWeight );}
\DoxyCodeLine{195 }
\DoxyCodeLine{196 xbInt16 ProcessExpressionFunction( xbExpNode *n, xbInt16 iRecBufSw = 0 );}
\DoxyCodeLine{197 xbInt16 ProcessExpressionOperator( xbExpNode *n );}
\DoxyCodeLine{198 }
\DoxyCodeLine{199 \textcolor{keyword}{private}: \textcolor{comment}{// fields}}
\DoxyCodeLine{200 \mbox{\hyperlink{namespacexb_a97858ddeb1c4b0100f3edc1a46d3a8b0}{xbXBase}} *xbase;}
\DoxyCodeLine{201 \mbox{\hyperlink{namespacexb_ab2eae4b4732466698a7fdd89d77ba53b}{xbDbf}} *dbf;}
\DoxyCodeLine{202 xbExpNode *nTree; \textcolor{comment}{// pointer to tree of expNodes}}
\DoxyCodeLine{203 \textcolor{comment}{// xbInt16 iExpLen; // size of expression result}}
\DoxyCodeLine{204 }
\DoxyCodeLine{205 }
\DoxyCodeLine{206 \};}
\DoxyCodeLine{207 }
\DoxyCodeLine{208 \textcolor{comment}{/* Expression handler */}}
\DoxyCodeLine{209 }
\DoxyCodeLine{210 }
\DoxyCodeLine{211 \};}
\DoxyCodeLine{212 \textcolor{preprocessor}{\#endif }\textcolor{comment}{// XB\_EXPRESSION\_SUPPORT}}
\DoxyCodeLine{213 \textcolor{preprocessor}{\#endif }\textcolor{comment}{// \_\_XB\_EXP\_H\_\_}}
\DoxyCodeLine{214 }
\DoxyCodeLine{215 }
\end{DoxyCode}
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