def literal
import bolt@1.27.0.0/src/rules/pedantic/index.bend as Indeximport Base
import bolt@1.27.0.0/src/syntax/lex.bend as Lex
import bolt@1.27.0.0/src/syntax/tree.bend as Tree
23# is the chain exactly one number?
24def literal(nn: Tree.Node) -> Bool:
25 match nn:
26 case Tree.NCons{Tree.Leaf{Lex.Tok{Lex.TNum{}, t, l, c}}, Tree.NNil{}}:
27 True{}
28 case other:
29 False{}