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gf-core/book/examples/chapter8/GeometryEngb.gf
2010-11-22 12:55:37 +00:00

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concrete GeometryEng of Geometry = LogicEng **
open SyntaxEng, ParadigmsEng in {
lin
Line = mkN "line" ;
Point = mkN "point" ;
Circle = mkN "circle" ;
Intersect = pred (mkV2 "intersect") ;
Parallel = pred (mkA2 (mkA "parallel") (mkPrep "to")) ;
Vertical = pred (mkA "vertical") ;
Centre = app (mkN2 (mkN "centre") (mkPrep "of")) ;
}