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gf-core/gf-book/examples/chapter8/GeometryEng.gf
2011-01-11 15:46:43 +00:00

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