// Phase 162: Test _match_literal from JsonParserBox (Pattern1 + return)
// Target: JsonParserBox._match_literal - Pattern1 (Simple) with return in loop

static box Main {
  main(args) {
    // Simulate _match_literal logic
    local s = "null value"
    local pos = 0
    local literal = "null"

    local len = literal.length()
    if pos + len > s.length() {
      print("Result: FAIL (out of bounds)")
      return 0
    }

    local i = 0
    loop(i < len) {
      local ch_s = s.substring(pos + i, pos + i + 1)
      local ch_lit = literal.substring(i, i + 1)
      if ch_s != ch_lit {
        print("Result: NOMATCH")
        return 0
      }
      i = i + 1
    }

    print("Result: MATCH")
    return 0
  }
}