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19 lines
519 B
Text
19 lines
519 B
Text
import Ostap;
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import Fun;
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fun gen (depth) {
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if depth == 0
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then "a"
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else gen (depth-1) ++ "*" ++ gen (depth-1)
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fi
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}
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var a = token ("a"),
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add = [token ("+"), fun (l, _, r) {Add (l, r)}],
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sub = [token ("-"), fun (l, _, r) {Sub (l, r)}],
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mul = [token ("*"), fun (l, _, r) {Mul (l, r)}],
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div = [token ("/"), fun (l, _, r) {Div (l, r)}],
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exp = expr ({[Left, {add, sub}], [Left, {mul, div}]}, a),
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i;
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printf ("%s\n", parseString (exp |> bypass (eof), gen (5)).string)
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