// Phase 165: Test _parse_array style from JsonParserBox (Pattern4 with continue + multi-return)
// Simulates: loop(p < len) { if stop { return } if sep { continue } else { append } p++ }

static box Main {
  main(args) {
    // Simulate array element parsing: collect elements until ']'
    // Pattern: continue on ',' separator, return on ']', error on other
    local s = "elem1,elem2,elem3]extra"
    local p = 0
    local len = s.length()
    local arr = new ArrayBox()
    local elem = ""

    loop(p < len) {
      local ch = s.substring(p, p + 1)

      // Check for array end
      if ch == "]" {
        // Save last element if non-empty
        if elem.length() > 0 {
          arr.push(elem)
        }
        print("Array parsing complete")
        print("Elements: " + ("" + arr.length()))
        return 0
      }

      // Check for element separator
      if ch == "," {
        // Save accumulated element
        if elem.length() > 0 {
          arr.push(elem)
          elem = ""
        }
        p = p + 1
        continue
      }

      // Accumulate element character
      elem = elem + ch
      p = p + 1
    }

    // If we exit loop without finding ']'
    print("ERROR: Array not terminated with ]")
    return 1
  }
}