Regex.size: def of bend-kit-regex@0.8.0.0
Import: import bend-kit-regex@0.8.0.0/regex.bend as Regex
Lines 623-640 of bend-kit-regex@0.8.0.0/regex.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-regex@0.8.0.0/regex.bend&start_line=623&end_line=640

import Base

def size(n: Node) -> U32:
  match n:
    case NEmpty{}:
      0
    case NSet{neg, items}:
      1
    case NAssert{k}:
      1
    case NCat{a, b}:
      (size(a) + size(b) : U32)
    case NAlt{a, b}:
      (2 + size(a) + size(b) : U32)
    case NPlus{g, a}:
      (1 + size(a) : U32)
    case NQuest{g, a}:
      (1 + size(a) : U32)
    case NGroup{i, a}:
      (2 + size(a) : U32)

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.add
  https://jend.leeeet.dev/definition.txt?path=bend-kit-regex@0.8.0.0/regex.bend&name=Node