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--></style></head><body lang=NO-BOK link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi. I have a homework-assignment where one of the tasks is to make a static Analyzer for BIPL-E, BIPL-E being the BIPL Language with input- and output-parameters. <o:p></o:p></p><p class=MsoNormal>The Analyzer is supposed to <o:p></o:p></p><ol style='margin-top:0cm' start=1 type=1><li class=MsoListParagraph style='margin-left:0cm;mso-list:l0 level1 lfo1'>check that all variables has been defined before use. If not, give an error message.<o:p></o:p></li></ol><p class=MsoListParagraph>You can do this by traversing each statement in the program to check if it uses values that </p><p class=MsoListParagraph>haven’t been defined before. You can keep track of which variables that has been defined so far in a list, and put new ones to the list when you encounter Assign-statements</p><ol style='margin-top:0cm' start=2 type=1><li class=MsoListParagraph style='margin-left:0cm;mso-list:l0 level1 lfo1'>check that all output parameters have been given a value when the program has ended<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0cm;mso-list:l0 level1 lfo1'>You don’t care about what the different statements really evaluates to . <o:p></o:p></li></ol><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>As a start: <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>static_analyzer :: BIPLE -> ..<o:p></o:p></p><p class=MsoNormal>..<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Best regards, <o:p></o:p></p><p class=MsoNormal>Eirik<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Sendt fra <a href="https://go.microsoft.com/fwlink/?LinkId=550986">E-post</a> for Windows 10<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>