30d4efb954
* harbour/include/hbapicls.h
* harbour/source/vm/classes.c
* harbour/source/vm/hvm.c
* harbour/tests/overload.prg
+ added support for overloading [] in assignment operation
114 lines
3.2 KiB
Plaintext
114 lines
3.2 KiB
Plaintext
//
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// $Id$
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//
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//
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// DynObj
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//
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// Implementation of operator overload in Harbour
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//
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// Date : 1999/05/15
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//
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// Written by Eddie Runia <eddie@runia.com>
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// www - http://www.harbour-project.org
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//
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// Jfl 2001/11/18 command mode added
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//
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// Placed in the public domain
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//
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#include "hbclass.ch"
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function Main()
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local oString := TString():New( "Hello" )
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QOut( "Testing TString with Operator Overloading" )
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QOut( oString:cValue )
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QOut( "---" )
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? ValType( oString )
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QOut( "Equal........:", oString = "Hello" )
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QOut( "Exactly Equal:", oString == "Hello" )
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QOut( "Not Equal != :", oString != "Hello" )
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QOut( "Not Equal <> :", oString <> "Hello" )
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QOut( "Not Equal # :", oString # "Hello" )
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QOut( "Substring $ :", oString $ "Hello" )
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QOut( "Less than :", oString < "Hello" )
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QOut( "Less than or Equal:", oString <= "Hello" )
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QOut( "Greater than :", oString > "Hello" )
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QOut( "Greater than or Equal:", oString >= "Hello" )
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QOut( "Concatenation + :", oString + "Hello" )
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QOut( "Concatenation - :", oString - "Hello" )
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QOut( "Array index[2] :", oString[2] )
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QOut( "Array index[3] := 'X' :", oString[3]:='X' )
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QOut( oString:cValue )
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return nil
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create class tString
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VAR cValue
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METHOD New(cText) INLINE ::cValue := cText, self
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OPERATOR "=" ARG cArg INLINE ::cValue = cArg
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OPERATOR "==" ARG cArg INLINE ::cValue == cArg
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OPERATOR "!=" ARG cArg INLINE ::cValue != cArg
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OPERATOR "<" ARG cArg INLINE ::cValue < cArg
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OPERATOR "<=" ARG cArg INLINE ::cValue <= cArg
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OPERATOR ">" ARG cArg INLINE ::cValue > cArg
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OPERATOR ">=" ARG cArg INLINE ::cValue >= cArg
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OPERATOR "+" ARG cArg INLINE ::cValue + cArg
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OPERATOR "-" ARG cArg INLINE ::cValue - cArg
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OPERATOR "$" ARG cArg INLINE ::cValue $ cArg
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OPERATOR "[]" ARG nIndex INLINE iif( pcount()>2, ;
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::cValue := stuff( ::cValue, nIndex, 1, hb_pvalue(3) ), ;
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substr( ::cValue, nIndex, 1 ) )
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endclass
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/*
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function TString()
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static oClass
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if oClass == nil
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oClass = HBClass():New( "TSTRING" ) // starts a new class definition
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oClass:AddData( "cValue" ) // define this class objects datas
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oClass:AddMethod( "New", @New() )
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oClass:AddInline( "==", {| self, cTest | ::cValue == cTest } )
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oClass:AddInline( "!=", {| self, cTest | ::cValue != cTest } )
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oClass:AddInline( "<" , {| self, cTest | ::cValue < cTest } )
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oClass:AddInline( "<=", {| self, cTest | ::cValue <= cTest } )
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oClass:AddInline( ">" , {| self, cTest | ::cValue > cTest } )
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oClass:AddInline( ">=", {| self, cTest | ::cValue >= cTest } )
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oClass:AddInline( "+" , {| self, cTest | ::cValue + cTest } )
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oClass:AddInline( "-" , {| self, cTest | ::cValue - cTest } )
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oClass:AddInline( "$" , {| self, cTest | ::cValue $ cTest } )
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oClass:AddInline( "HasMsg", {| self, cMsg | __ObjHasMsg( QSelf(), cMsg ) } )
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oClass:Create() // builds this class
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endif
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return oClass:Instance() // builds an object of this class
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static function New( cText )
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local Self := QSelf()
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::cValue := cText
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return Self
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*/
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