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1、SecretsofMacroQuotingFunctions–HowandWhySusanO'Connor,SASInstituteInc.,Cary,NCABSTRACTcharacterstoillustratethepositionofamacrodeltacharacterinmacroquoting.How,why,whenandwheretousemacroIwanttobrieflydefinethetermcompilerandquotingfunctionsaretrickyque
2、stionsforallrelateittotheSASSystemandtotheSASusers.Macroquotingisnot,assomethink,macrofacilityparticularly.puttingsingleanddoublequotationmarksinoraroundSAStokens.MacroquotingisactuallyAclassicdefinitionofacompilerisaprogrammaskingspecialcharactersandm
3、nemonicthatdecodesinstructionswritteninpseudocodeexpressionsintheSAS®Systemsothattheseandproducesamachinelanguageprogramtobecharactersarenotconfusedorambiguousintheirexecutedatalatertime.Acompilerisaprogramcontextduringtokenizationandexecutionofthattra
4、nslatesinstructionswritteninahighlevelSASorSASmacro.SASmacroquotingprogramminglanguageintoalower-levelfunctionsalsoareusedtomarkstartingandlanguageorsetofinstructionsthatcanbeendingdelimiters.executed.Thetermscompile-timeandrun-timeshouldbeThereareseve
5、ralpartsoftheSASSystemthatunderstoodasrelatedtomacroformasteryofcanbereferredtoasacompiler:SCL,theDATAmacroquotingfunctions.Thedifferencesandstep,somePROCsandmacro.Sometimes,thetimingofthecompile-timemacroquotingtermcompilerisusedinacavaliermannerand,f
6、unctions,%STRand%NRSTR,willbeinonesentence,“compiler”canmeanDATAemphasized.Themeaningofrun-timemacrostepcompilerormacrocompiler.ThisconfusionquotingfunctionsandtheindividualimplicationsisfoundinSASdocumentationandinSASinyourcodewillbecoveredandthediffe
7、rencescourses.Whiletherearemanycompilersinthebetweenrun-timeandcompile-timemacroSASSystem,theyarealldifferent.TheSASquotingfunctionswillbeillustrated.macrocompilerwillbethefocusofthispaperbecauseitisintheSASmacrofacilitythatmacroDetailsandhistoryof%QUO
8、TEandquotingoccurs.Forthepurposeofillustration,I%BQUOTEmayhelpusersrememberthewillcreateasimplemacropseudocodetodifferencesinwhatismaskedineachfunction.suggestcompiledmacroinstructionsandAlso,theimplementationofmacroquotingconstanttext.
