Sometimes Switches require parens when it seems like they shouldn't

[skilesare]

example:

public func getNFTOwner(metadata: CandyTypes.CandyValue) : Result.Result<Types.Account, Types.OrigynError>
    let val = take Properties.getClassProperty(metadata, Types.metadata.owner), return #err(Types.errors(#owner_not_found, "getNFTOwner - cannot find owner id in metadata", null))
    return #ok(
      switch(val.value){
        case(#Principal(val)){#principal(val)}
        case(#Text(val)){#account_id(val)}
        case(#Class(val)){#extensible(#Class(val))}
        case(#Array(ary))
          switch(ary){
            case(#frozen(items))
              if(items.size() > 0)
                #account(
                  {
                      owner = switch(items[0]){
                        case(#Principal(val)){val }
                        case(_)
                          return #err(Types.errors(#improper_interface, "getNFTOwner -  improper interface, not a principal at 0 ", null))
                      }
                
                      sub_account = if(items.size() > 1)
                          switch(items[1]){
                            case(#Blob(val)){?val  }
                            case(_)
                              return #err(Types.errors(#improper_interface, "getNFTOwner -  improper interface, blob at 1 ", null))
                          }
                      
                        else 
                          null
                  })
              else
                return #err(Types.errors(#improper_interface, "ledger_interface -  improper interface, not enough items " # debug_show(ary), null))

            
            
            case(_){return #err(Types.errors(#improper_interface, "ledger_interface - send payment - improper interface, not frozen " # debug_show(ary), null))  }
          }
        case(_){return #err(Types.errors(#improper_interface, "ledger_interface - send payment - improper interface, not an array " , null))  }
      }
      
    )

The switches need parens or the compile fails

[STRd6]

I'm not able to reproduce. This works for me:

module
  public func getNFTOwner(metadata: CandyTypes.CandyValue) : Result.Result<Types.Account, Types.OrigynError>
    let val = take Properties.getClassProperty(metadata, Types.metadata.owner), return #err(Types.errors(#owner_not_found, "getNFTOwner - cannot find owner id in metadata", null))

    return #ok(
      switch val.value {
        case(#Principal(val)){#principal(val)}
        case(#Text(val)){#account_id(val)}
        case(#Class(val)){#extensible(#Class(val))}
        case(#Array(ary))
          switch ary {
            case(#frozen(items))
              if(items.size() > 0)
                #account(
                  {
                      owner = switch items[0] {
                        case(#Principal(val)){val }
                        case(_)
                          return #err(Types.errors(#improper_interface, "getNFTOwner -  improper interface, not a principal at 0 ", null))
                      }

                      sub_account = if(items.size() > 1)
                          switch items[1] {
                            case(#Blob(val)){?val  }
                            case(_)
                              return #err(Types.errors(#improper_interface, "getNFTOwner -  improper interface, blob at 1 ", null))
                          }

                        else
                          null
                  })
              else
                return #err(Types.errors(#improper_interface, "ledger_interface -  improper interface, not enough items " # debug_show(ary), null))



            case(_){return #err(Types.errors(#improper_interface, "ledger_interface - send payment - improper interface, not frozen " # debug_show(ary), null))  }
          }
        case(_){return #err(Types.errors(#improper_interface, "ledger_interface - send payment - improper interface, not an array " , null))  }
      }

    )