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| 1 | namespace Semantic.Types is | |
| 2 | use Source.LOCATION | |
| 3 | ||
| 4 | use Logging | |
| 5 | ||
| 6 | use Ghul.Pipes | |
| 7 | ||
| 8 | class TUPLE: GENERIC is | |
| 9 | names: Collections.List[string?]? | |
| 10 | ||
| 11 | tuple_element_names: Collections.List[string?]? => names | |
| 12 | ||
| 13 | short_description: string => get_short_description(self, names, false) | |
| 14 | ||
| 15 | // Build an element-name list of exactly `arity` entries from | |
| 16 | // the leading entries of a flattened TupleElementNamesAttribute | |
| 17 | // array, padding with null. | |
| 18 | take_element_names(names: Collections.List[string?]?, arity: int) -> Collections.List[string?]? static is | |
| 19 | if !names? then | |
| 20 | return null | |
| 21 | fi | |
| 22 | ||
| 23 | let result = Collections.LIST[string?]() | |
| 24 | ||
| 25 | for i in 0..arity do | |
| 26 | result.add(if i < names.count then names[i] else null fi) | |
| 27 | od | |
| 28 | ||
| 29 | return result | |
| 30 | si | |
| 31 | ||
| 32 | ||
| 33 | get_short_description(tuple: Type, names: Collections.List[string?]?) -> string static => | |
| 34 | get_short_description(tuple, names, false) | |
| 35 | ||
| 36 | // Qualified renders each element as it would be written where the | |
| 37 | // tuple is read, scope-relative; the short form names each bare. | |
| 38 | get_short_description(tuple: Type, names: Collections.List[string?]?, qualified: bool) -> string static is | |
| 39 | let args = tuple.arguments | |
| 40 | ||
| 41 | assert args |> all(a => a?) else "tuple at least one null argument" | |
| 42 | ||
| 43 | let element = (i: int) -> string => if qualified then "{args[i]}" else args[i].short_description fi | |
| 44 | ||
| 45 | return "({(0..args.count) |> map(i => "{_get_element_name(names, i)}{element(i)}") |> join()})" | |
| 46 | si | |
| 47 | ||
| 48 | _get_element_name(names: Collections.List[string?]?, index: int) -> string static => | |
| 49 | if names? /\ index < names.count /\ names[index]? /\ !Symbols.Symbol.is_positional_member_name(names[index]) then | |
| 50 | if Lexical.TOKENIZER.is_reserved_word(names[index]) then | |
| 51 | "`{names[index]}: " | |
| 52 | else | |
| 53 | "{names[index]}: " | |
| 54 | fi | |
| 55 | else | |
| 56 | "" | |
| 57 | fi | |
| 58 | ||
| 59 | init( | |
| 60 | location: LOCATION, | |
| 61 | symbol: Symbols.Classy, | |
| 62 | arguments: Collections.List[Type], | |
| 63 | names: Collections.List[string?]? | |
| 64 | ) is | |
| 65 | super.init(Symbols.TUPLE(location, symbol, arguments, names)) | |
| 66 | ||
| 67 | self.names = names | |
| 68 | si | |
| 69 | ||
| 70 | create( | |
| 71 | location: LOCATION, | |
| 72 | symbol: Symbols.Classy, | |
| 73 | arguments: Collections.List[Type] | |
| 74 | ) -> GENERIC => | |
| 75 | TUPLE(location, symbol, arguments, names) | |
| 76 | ||
| 77 | apply_tuple_element_names(new_names: Collections.List[string?]) -> Type => | |
| 78 | if let generic_symbol = cast Symbols.GENERIC?(symbol) then | |
| 79 | TUPLE(LOCATION.internal, generic_symbol.symbol, arguments, take_element_names(new_names, arguments.count)) | |
| 80 | else | |
| 81 | self | |
| 82 | fi | |
| 83 | ||
| 84 | to_string() -> string => get_short_description(self, names, true) | |
| 85 | si | |
| 86 | si |