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Diffstat (limited to 'old-examples/systemS/FormulaSymb.gf')
| -rw-r--r-- | old-examples/systemS/FormulaSymb.gf | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/old-examples/systemS/FormulaSymb.gf b/old-examples/systemS/FormulaSymb.gf new file mode 100644 index 000000000..5c2360673 --- /dev/null +++ b/old-examples/systemS/FormulaSymb.gf @@ -0,0 +1,22 @@ +--# -path=.:prelude + +concrete FormulaSymb of Formula = open Precedence in { + + lincat + Formula, Term = PrecExp ; + + lin + And = infixL 3 "&" ; + Or = infixL 2 "v" ; + If = infixR 1 "->" ; + Not = prefixR 4 "~" ; + Abs = constant "_|_" ; + +---- All P = mkPrec 4 PR (paren ("All" ++ P.$0) ++ usePrec P 4) ; +---- Exist P = mkPrec 4 PR (paren ("Ex" ++ P.$0) ++ usePrec P 4) ; + + A = constant "A" ; + B = constant "B" ; + C = constant "C" ; + +}
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