Strings.literal: def of bolt@1.27.0.0
Import: import bolt@1.27.0.0/src/rules/perf/strings.bend as Strings
Lines 47-55 of bolt@1.27.0.0/src/rules/perf/strings.bend: https://jend.leeeet.dev/read.txt?path=bolt@1.27.0.0/src/rules/perf/strings.bend&start_line=47&end_line=55

import 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
import bolt@1.27.0.0/src/rules/tokens.bend as T

# the characters of the string a case pattern opens with, if it does and the
# string is closed
def literal(kids: Tree.Node) -> Maybe<&2, U32>:
  match kids:
    case Tree.NCons{Tree.Leaf{Lex.Tok{Lex.TStr{}, +t, l, c}}, rest}:
      +w = T.width(t)
      Bool.pick(Maybe<&2, U32>, terminated(t), Some{(w - 2 : U32)}, None{})
    case other:
      None{}

Uses (9):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.pick
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.sub
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/rules/perf/strings.bend&name=terminated
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/rules/tokens.bend&name=width
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/syntax/lex.bend&name=Tok
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/syntax/lex.bend&name=TokKind
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/syntax/tree.bend&name=Node