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CTExpression Class Reference

The expression Implemented in: tvu_calculate.cpp. More...

#include <tvu_calculate.h>

Inheritance diagram for CTExpression::

Public Methods
	CTExpression ()
	Contructors/Destructors. More...
	CTExpression (CTObject *Object)
	~CTExpression ()
	DEFINE_ID_FUNCTIONS (CTExpression, CTItemList, CLASSNAME_EXPRESSION_ID, CLASSNAME_EXPRESSION) virtual CTItemList *CreateNewItem()
virtual CTItemList*	CreateNewItem (LPCTObject Object)
virtual TBOOL	Save (LPCTFile pFile, TINT Marge)
	Save the object. More...
virtual TBOOL	SaveExpression (LPCTFile pFile, TINT Marge)
	Save the expression. More...
virtual TBOOL	Load (LPTBYTE *lpBuffers)
	Load the object from buffers. More...
virtual TBOOL	Build (CTList Objects, TLPCSTR lpCreateClass=TNULL, TBOOL bBuildFunctions=TTRUE, CTList pExpression=TNULL)
	Build the expression using a object list. More...
virtual TBOOL	IsWellBuilt (TBOOL bTestOnly=TFALSE, CTList pExpression=TNULL)
	verify if the object if well built. More...
virtual TBOOL	IsContains (TLPCSTR ObjectName, CTList pExpression=TNULL)
virtual CTObject*	GetValue ()
	Get the value of the expression. More...
virtual CTObject*	Calculate (TINT iOperator, CTObject *Object)
	Calculate the mathematical operators: +, -, *, / and the comparing operators: =, <, <=, >, >=. In this case, the returned value is an object of CTInt. More...
CTExpression&	operator= (CTExpression &Object)
	Operations. More...
Static Public Methods
CTExpression*	CreateExpression (CTObject *Object1, CTInt *OP, CTObject *Object2)
	Create a list expressing a mathematical expression. More...
CTExpression*	CreateExpression (CTObject *Object1, TLPCSTR OP, CTObject *Object2)
CTExpression*	CreateAttributeExpression (CTObject *Object, CTInt *idAttribute)
	Create an expression for getting an attribute of an object. More...
CTExpression*	CreateAttributeExpression (CTObject *Object, TLPCSTR strAttribute)
CTObject*	CF_Debug (CTList Objects)
	=== CODED FUNCTIONS ===. More...
Static Public Attributes
CTBool	m_Debug
TINT	m_Level
Protected Methods
CTObject*	Analyse (LPTBYTE lpBuffers, TINT Len)
	Analyse the mathematical expression. More...
CTObject*	Analyse (LPTBYTE lpBuffers, TINT Left, TINT Right, LPOPDESCRIPTOR *OPs, TBOOL bFirstTime=TFALSE)
TINT	FindBreakingPos (LPTBYTE lpBuffers, TINT Left, TINT Right, LPOPDESCRIPTOR *OPs, TINT *Pos, TBOOL *bContainsPoint, TBOOL *bContainsParentheses)
	Find the positions to "break" the expression Pos: will contain the postions where we can break the expression bContainsPoint: if the broken part of the expression contains a "." bContainsParentheses: if the expression contains the arentheses Returned value: the number of positions, 9999 - we need do with Left+1 and Right-1, < 0 - error. More...
CTObject*	AnalyseFunctionCall (LPTBYTE lpBuffers, TINT Left, TINT Right, LPOPDESCRIPTOR *OPs)
	Analyse a function call expression: f(O1, O2,..., On). More...
CTObject*	AnalyseAtom (LPTBYTE lpBuffers, TINT Left, TINT Right, LPOPDESCRIPTOR *OPs, TBOOL bContainsPoint)
	Analyse an atomic expression: number, string, var, reference returned value: a corresponding object. More...
CTObject*	AnalyseComplexExpresion (LPTBYTE lpBuffers, TINT Left, TINT Right, LPOPDESCRIPTOR *OPs, TINT nPos, TINT *Pos, TBOOL bFirstTime=TFALSE)
	Analyse a complex expression: contains at least one OP returned value: a created expression. More...
TINT	FindOP (LPTBYTE lpBuffers, TINT Left, TINT Right, LPOPDESCRIPTOR *OPs)
	Find every OP Return: number of OP found. More...
TINT	FirstPos (LPTBYTE lpBuffers, TINT StartPos, TINT Inc=1)
	Find the first position. More...
TINT	Priority (TINT op)
	Priority of an operator. More...
TBOOL	IsValidCharacter (char c)
	Verify if a character is valid. More...

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Detailed Description

The expression Implemented in: tvu_calculate.cpp.

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Constructor & Destructor Documentation

CTExpression::CTExpression ( )

Contructors/Destructors.

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Member Function Documentation

CTObject * CTExpression::Analyse ( LPTBYTE lpBuffers, TINT Len ) [protected]

Analyse the mathematical expression.

CTObject * CTExpression::AnalyseAtom ( LPTBYTE lpBuffers, TINT Left, TINT Right, LPOPDESCRIPTOR * OPs, TBOOL bContainsPoint ) [protected]

Analyse an atomic expression: number, string, var, reference returned value: a corresponding object.

CTObject * CTExpression::AnalyseComplexExpresion ( LPTBYTE lpBuffers, TINT Left, TINT Right, LPOPDESCRIPTOR * OPs, TINT nPos, TINT * Pos, TBOOL bFirstTime = TFALSE ) [protected]

Analyse a complex expression: contains at least one OP returned value: a created expression.

CTObject * CTExpression::AnalyseFunctionCall ( LPTBYTE lpBuffers, TINT Left, TINT Right, LPOPDESCRIPTOR * OPs ) [protected]

Analyse a function call expression: f(O1, O2,..., On).

TBOOL CTExpression::Build ( CTList Objects, TLPCSTR lpCreateClass = TNULL, TBOOL bBuildFunctions = TTRUE, CTList pExpression = TNULL ) [virtual]

Build the expression using a object list.

CTObject * CTExpression::CF_Debug ( CTList Objects ) [static]

=== CODED FUNCTIONS ===.

CTObject * CTExpression::Calculate ( TINT iOperator, CTObject * Object ) [virtual]

Calculate the mathematical operators: +, -, *, / and the comparing operators: =, <, <=, >, >=. In this case, the returned value is an object of CTInt. Reimplemented from CTItemList.

CTExpression * CTExpression::CreateAttributeExpression ( CTObject * Object, CTInt * idAttribute ) [static]

Create an expression for getting an attribute of an object.

CTExpression * CTExpression::CreateExpression ( CTObject * Object1, CTInt * OP, CTObject * Object2 ) [static]

Create a list expressing a mathematical expression.

TINT CTExpression::FindBreakingPos ( LPTBYTE lpBuffers, TINT Left, TINT Right, LPOPDESCRIPTOR * OPs, TINT * Pos, TBOOL * bContainsPoint, TBOOL * bContainsParentheses ) [protected]

Find the positions to "break" the expression Pos: will contain the postions where we can break the expression bContainsPoint: if the broken part of the expression contains a "." bContainsParentheses: if the expression contains the arentheses Returned value: the number of positions, 9999 - we need do with Left+1 and Right-1, < 0 - error.

TINT CTExpression::FindOP ( LPTBYTE lpBuffers, TINT Left, TINT Right, LPOPDESCRIPTOR * OPs ) [protected]

Find every OP Return: number of OP found.

TINT CTExpression::FirstPos ( LPTBYTE lpBuffers, TINT StartPos, TINT Inc = 1 ) [protected]

Find the first position.

CTObject * CTExpression::GetValue ( ) [virtual]

Get the value of the expression. Reimplemented from CTItemList.

TBOOL CTExpression::IsValidCharacter ( char c ) [protected]

Verify if a character is valid.

TBOOL CTExpression::IsWellBuilt ( TBOOL bTestOnly = TFALSE, CTList pExpression = TNULL ) [virtual]

verify if the object if well built.

TBOOL CTExpression::Load ( LPTBYTE * lpBuffers ) [virtual]

Load the object from buffers. Reimplemented from CTObject.

TINT CTExpression::Priority ( TINT op ) [protected]

Priority of an operator.

TBOOL CTExpression::Save ( LPCTFile pFile, TINT Marge ) [virtual]

Save the object. Reimplemented from CTObject.

TBOOL CTExpression::SaveExpression ( LPCTFile pFile, TINT Marge ) [virtual]

Save the expression. Reimplemented from CTItemList.

CTExpression & CTExpression::operator= ( CTExpression & Object )

Operations.

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The documentation for this class was generated from the following file:

• /lib/libtvubase/tvu_calculate.h

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