https://github.com/jrincayc/ucblogo-code
Tip revision: ca23b30a62eaaf03ea203ae71d00dc45a046514e authored by Dan Malec on 21 January 2024, 20:20:12 UTC
Merge pull request #178 from jrincayc/issue_176_alt
Merge pull request #178 from jrincayc/issue_176_alt
Tip revision: ca23b30
case
;;; -*- logo -*-
.macro case :case.value :case.clauses [:caseignoredp "true]
catch "case.error [output case.helper :case.value :case.clauses]
(throw "error [Empty CASE clause])
end
to case.helper :case.value :case.clauses
if emptyp :case.clauses [output []]
if emptyp first :case.clauses [throw "case.error]
if or equalp first first :case.clauses "else ~
memberp :case.value first first :case.clauses ~
[output butfirst first :case.clauses]
output case.helper :case.value butfirst :case.clauses
end
bury [case case.helper]