Hermes: A Tutorial and Reference Manual - Researcher - IBM
Hermes: A Tutorial and Reference Manual - Researcher - IBM
Hermes: A Tutorial and Reference Manual - Researcher - IBM
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emove(element,table) TypeRules: AppendixB.<strong>Hermes</strong>Operations185<br />
Preconditions: table2table<br />
init(table)<br />
elementtypeof(table) Exceptions:Depletion,NotFound<br />
SpecialRules:Thestatementqualierisaselector.Theresultvariable SeealsoSpecialRules var(element) var(table) Postconditions:<br />
typeoftheelementvariableidentiedintheselectormustbetheelementtypeoftable.Theentrytypestatefortheselectoristheentry<br />
typestateoftheremovestatement.Thetypestateonnormalexitfrom identiedinthatselectormustbeoftypepredefined!boolean<strong>and</strong> musthavetheinitattributeonnormalexitfromtheselector.The SeealsoSpecialRules killconstraints(table) moveelementts(table,element)<br />
Description:Removeanelementfromtablethatsatisestheselector Qualier:selector identiedintheinstructionqualier,<strong>and</strong>storeitinelement.Iftableis ordered,removetherstsuchelement. theremovestatementiscomputedbyapplyingthepostconditionrules listedabovetothenormalexittypestateoftheselector,minusanyattributesinvolvingtheresultorelementvariable.SeeSectionfora<br />
return(callmessage) discussionofhowtypestatesarecomputedforselectors.<br />
TypeRules: Preconditions: callmessage2callmessage lowestpostcondition(callmessage) Exceptions:Depletion Seex11.6,p.111<br />
Description:Returncallmessagetotheprocessthatoriginallysentit, Qualier:absent withoutraisingauserexception. var(callmessage) Postconditions: makeuninit(callmessage) Seex11.8,p.123
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