Pull.span.advance: def of emerging-ezjson@1.3.0.0
Import: import emerging-ezjson@1.3.0.0/src/pull.bend as Pull
Lines 881-899 of emerging-ezjson@1.3.0.0/src/pull.bend: https://jend.leeeet.dev/read.txt?path=emerging-ezjson@1.3.0.0/src/pull.bend&start_line=881&end_line=899

import Base

# the next state after one character of a span. The unread tail stays with
# the stepper, so the usual character does not keep it
def span.advance(
  key: Skind,
  cut: String,
  nn: U32,
  stack: List<&2, Frame>,
  goal: Goal,
  done: Bool
) -> St:
  match key:
    case KGo{}:
      S{MSpan{cut, U32.add(nn, 1)}, stack, goal, done, False{}}
    case KEnd{}:
      str.place.here(PSpan{cut, nn}, stack, goal)
    case KEsc{}:
      span.esc(cut, nn, stack, goal, done)
    case KBad{}:
      err.st(goal)

Uses (14):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  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=emerging-ezjson@1.3.0.0/src/pull.bend&name=Frame
  https://jend.leeeet.dev/definition.txt?path=emerging-ezjson@1.3.0.0/src/pull.bend&name=Goal
  https://jend.leeeet.dev/definition.txt?path=emerging-ezjson@1.3.0.0/src/pull.bend&name=Mode
  https://jend.leeeet.dev/definition.txt?path=emerging-ezjson@1.3.0.0/src/pull.bend&name=Piece
  https://jend.leeeet.dev/definition.txt?path=emerging-ezjson@1.3.0.0/src/pull.bend&name=Skind
  https://jend.leeeet.dev/definition.txt?path=emerging-ezjson@1.3.0.0/src/pull.bend&name=St
  https://jend.leeeet.dev/definition.txt?path=emerging-ezjson@1.3.0.0/src/pull.bend&name=err.st
  https://jend.leeeet.dev/definition.txt?path=emerging-ezjson@1.3.0.0/src/pull.bend&name=span.esc
  https://jend.leeeet.dev/definition.txt?path=emerging-ezjson@1.3.0.0/src/pull.bend&name=str.place.here