Openapi.walk: def of ezmcp@0.1.0.0
Import: import ezmcp@0.1.0.0/src/openapi.bend as Openapi
Lines 252-260 of ezmcp@0.1.0.0/src/openapi.bend: https://jend.leeeet.dev/read.txt?path=ezmcp@0.1.0.0/src/openapi.bend&start_line=252&end_line=260

import Base
import emerging-ezjson@1.2.0.0/main.bend as Json
import emerging-ezjson@1.2.0.0/src/value.bend as Value

# the value at a pointer's tokens, each a member name, or none when a member
# is missing
def walk(toks: List<&2, String>, +val: Value.Json) -> Maybe<&2, Value.Json>:
  match toks:
    case []:
      Some{val}
    case tok <> rest:
      +key = token(tok)
      walk.at(Json.has(val, key), Json.get(val, key), got => walk(rest, got))

Uses (8):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=emerging-ezjson@1.3.0.0/main.bend&name=get
  https://jend.leeeet.dev/definition.txt?path=emerging-ezjson@1.3.0.0/main.bend&name=has
  https://jend.leeeet.dev/definition.txt?path=emerging-ezjson@1.3.0.0/src/value.bend&name=Json
  https://jend.leeeet.dev/definition.txt?path=ezmcp@0.1.0.0/src/openapi.bend&name=token
  https://jend.leeeet.dev/definition.txt?path=ezmcp@0.1.0.0/src/openapi.bend&name=walk.at