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| 1 | +package scala |
| 2 | + |
| 3 | +package object quoted { |
| 4 | + |
| 5 | + /** Evaluate the contents of this expression and return the result. |
| 6 | + * It provides a new QuoteContext that is only valid within the scope the argument. |
| 7 | + * |
| 8 | + * Usage: |
| 9 | + * ``` |
| 10 | + * val e: T = run { // (given qctx: QuoteContext) => |
| 11 | + * expr |
| 12 | + * } |
| 13 | + * ``` |
| 14 | + * where `expr: Expr[T]` |
| 15 | + * |
| 16 | + * This method should not be called in a context where there is already has a `QuoteContext` |
| 17 | + * such as within a `run` or a `withQuoteContext`. |
| 18 | + */ |
| 19 | + def run[T](expr: given QuoteContext => Expr[T]) given (toolbox: Toolbox): T = toolbox.run(expr given _) |
| 20 | + |
| 21 | + /** Provide a new quote context within the scope of the argument that is only valid within the scope the argument. |
| 22 | + * Return the result of the argument. |
| 23 | + * |
| 24 | + * Usage: |
| 25 | + * ``` |
| 26 | + * val e: T = withQuoteContext { // (given qctx: QuoteContext) => |
| 27 | + * thunk |
| 28 | + * } |
| 29 | + * ``` |
| 30 | + * where `thunk: T` |
| 31 | + * |
| 32 | + * This method should not be called in a context where there is already has a `QuoteContext` |
| 33 | + * such as within a `run` or a `withQuoteContext`. |
| 34 | + */ |
| 35 | + def withQuoteContext[T](thunk: given QuoteContext => T) given (toolbox: Toolbox): T = { |
| 36 | + var result: T = NoResult.asInstanceOf[T] |
| 37 | + def dummyRun given QuoteContext: Expr[Unit] = { |
| 38 | + result = thunk |
| 39 | + Expr.unitExpr |
| 40 | + } |
| 41 | + toolbox.run(dummyRun given _) |
| 42 | + assert(result != NoResult) // toolbox.run should have thrown an exception |
| 43 | + result |
| 44 | + } |
| 45 | + |
| 46 | + private object NoResult |
| 47 | + |
| 48 | + object autolift { |
| 49 | + given autoToExpr[T] as Conversion[T, Expr[T]] given Liftable[T], QuoteContext = _.toExpr |
| 50 | + } |
| 51 | + |
| 52 | + implicit object ExprOps { |
| 53 | + def (x: T) toExpr[T: Liftable] given QuoteContext: Expr[T] = the[Liftable[T]].toExpr(x) |
| 54 | + |
| 55 | + /** Lifts this sequence of expressions into an expression of a sequence |
| 56 | + * |
| 57 | + * Transforms a sequence of expression |
| 58 | + * `Seq(e1, e2, ...)` where `ei: Expr[T]` |
| 59 | + * to an expression equivalent to |
| 60 | + * `'{ Seq($e1, $e2, ...) }` typed as an `Expr[Seq[T]]` |
| 61 | + * |
| 62 | + * Usage: |
| 63 | + * ```scala |
| 64 | + * '{ List(${List(1, 2, 3).toExprOfSeq}: _*) } // equvalent to '{ List(1, 2, 3) } |
| 65 | + * ``` |
| 66 | + */ |
| 67 | + def (seq: Seq[Expr[T]]) toExprOfSeq[T] given (tp: Type[T], qctx: QuoteContext): Expr[Seq[T]] = { |
| 68 | + import qctx.tasty._ |
| 69 | + Repeated(seq.map(_.unseal).toList, tp.unseal).seal.asInstanceOf[Expr[Seq[T]]] |
| 70 | + } |
| 71 | + |
| 72 | + /** Lifts this list of expressions into an expression of a list |
| 73 | + * |
| 74 | + * Transforms a list of expression |
| 75 | + * `List(e1, e2, ...)` where `ei: Expr[T]` |
| 76 | + * to an expression equivalent to |
| 77 | + * `'{ List($e1, $e2, ...) }` typed as an `Expr[List[T]]` |
| 78 | + */ |
| 79 | + def (list: List[Expr[T]]) toExprOfList[T] given Type[T], QuoteContext: Expr[List[T]] = |
| 80 | + if (list.isEmpty) '{ Nil } else '{ List(${list.toExprOfSeq}: _*) } |
| 81 | + |
| 82 | + /** Lifts this sequence of expressions into an expression of a tuple |
| 83 | + * |
| 84 | + * Transforms a sequence of expression |
| 85 | + * `Seq(e1, e2, ...)` where `ei: Expr[_]` |
| 86 | + * to an expression equivalent to |
| 87 | + * `'{ ($e1, $e2, ...) }` typed as an `Expr[Tuple]` |
| 88 | + */ |
| 89 | + def (seq: Seq[Expr[_]]) toExprOfTuple given QuoteContext: Expr[Tuple] = { |
| 90 | + seq match { |
| 91 | + case Seq() => |
| 92 | + Expr.unitExpr |
| 93 | + case Seq('{ $x1: $t1 }) => |
| 94 | + '{ Tuple1($x1) } |
| 95 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }) => |
| 96 | + '{ Tuple2($x1, $x2) } |
| 97 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }) => |
| 98 | + '{ Tuple3($x1, $x2, $x3) } |
| 99 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }, '{ $x4: $t4 }) => |
| 100 | + '{ Tuple4($x1, $x2, $x3, $x4) } |
| 101 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }, '{ $x4: $t4 }, '{ $x5: $t5 }) => |
| 102 | + '{ Tuple5($x1, $x2, $x3, $x4, $x5) } |
| 103 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }, '{ $x4: $t4 }, '{ $x5: $t5 }, '{ $x6: $t6 }) => |
| 104 | + '{ Tuple6($x1, $x2, $x3, $x4, $x5, $x6) } |
| 105 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }, '{ $x4: $t4 }, '{ $x5: $t5 }, '{ $x6: $t6 }, '{ $x7: $t7 }) => |
| 106 | + '{ Tuple7($x1, $x2, $x3, $x4, $x5, $x6, $x7) } |
| 107 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }, '{ $x4: $t4 }, '{ $x5: $t5 }, '{ $x6: $t6 }, '{ $x7: $t7 }, '{ $x8: $t8 }) => |
| 108 | + '{ Tuple8($x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8) } |
| 109 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }, '{ $x4: $t4 }, '{ $x5: $t5 }, '{ $x6: $t6 }, '{ $x7: $t7 }, '{ $x8: $t8 }, '{ $x9: $t9 }) => |
| 110 | + '{ Tuple9($x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9) } |
| 111 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }, '{ $x4: $t4 }, '{ $x5: $t5 }, '{ $x6: $t6 }, '{ $x7: $t7 }, '{ $x8: $t8 }, '{ $x9: $t9 }, '{ $x10: $t10 }) => |
| 112 | + '{ Tuple10($x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10) } |
| 113 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }, '{ $x4: $t4 }, '{ $x5: $t5 }, '{ $x6: $t6 }, '{ $x7: $t7 }, '{ $x8: $t8 }, '{ $x9: $t9 }, '{ $x10: $t10 }, '{ $x11: $t11 }) => |
| 114 | + '{ Tuple11($x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11) } |
| 115 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }, '{ $x4: $t4 }, '{ $x5: $t5 }, '{ $x6: $t6 }, '{ $x7: $t7 }, '{ $x8: $t8 }, '{ $x9: $t9 }, '{ $x10: $t10 }, '{ $x11: $t11 }, '{ $x12: $t12 }) => |
| 116 | + '{ Tuple12($x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12) } |
| 117 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }, '{ $x4: $t4 }, '{ $x5: $t5 }, '{ $x6: $t6 }, '{ $x7: $t7 }, '{ $x8: $t8 }, '{ $x9: $t9 }, '{ $x10: $t10 }, '{ $x11: $t11 }, '{ $x12: $t12 }, '{ $x13: $t13 }) => |
| 118 | + '{ Tuple13($x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13) } |
| 119 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }, '{ $x4: $t4 }, '{ $x5: $t5 }, '{ $x6: $t6 }, '{ $x7: $t7 }, '{ $x8: $t8 }, '{ $x9: $t9 }, '{ $x10: $t10 }, '{ $x11: $t11 }, '{ $x12: $t12 }, '{ $x13: $t13 }, '{ $x14: $t14 }) => |
| 120 | + '{ Tuple14($x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14) } |
| 121 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }, '{ $x4: $t4 }, '{ $x5: $t5 }, '{ $x6: $t6 }, '{ $x7: $t7 }, '{ $x8: $t8 }, '{ $x9: $t9 }, '{ $x10: $t10 }, '{ $x11: $t11 }, '{ $x12: $t12 }, '{ $x13: $t13 }, '{ $x14: $t14 }, '{ $x15: $t15 }) => |
| 122 | + '{ Tuple15($x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15) } |
| 123 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }, '{ $x4: $t4 }, '{ $x5: $t5 }, '{ $x6: $t6 }, '{ $x7: $t7 }, '{ $x8: $t8 }, '{ $x9: $t9 }, '{ $x10: $t10 }, '{ $x11: $t11 }, '{ $x12: $t12 }, '{ $x13: $t13 }, '{ $x14: $t14 }, '{ $x15: $t15 }, '{ $x16: $t16 }) => |
| 124 | + '{ Tuple16($x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x16) } |
| 125 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }, '{ $x4: $t4 }, '{ $x5: $t5 }, '{ $x6: $t6 }, '{ $x7: $t7 }, '{ $x8: $t8 }, '{ $x9: $t9 }, '{ $x10: $t10 }, '{ $x11: $t11 }, '{ $x12: $t12 }, '{ $x13: $t13 }, '{ $x14: $t14 }, '{ $x15: $t15 }, '{ $x16: $t16 }, '{ $x17: $t17 }) => |
| 126 | + '{ Tuple17($x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x16, $x17) } |
| 127 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }, '{ $x4: $t4 }, '{ $x5: $t5 }, '{ $x6: $t6 }, '{ $x7: $t7 }, '{ $x8: $t8 }, '{ $x9: $t9 }, '{ $x10: $t10 }, '{ $x11: $t11 }, '{ $x12: $t12 }, '{ $x13: $t13 }, '{ $x14: $t14 }, '{ $x15: $t15 }, '{ $x16: $t16 }, '{ $x17: $t17 }, '{ $x18: $t18 }) => |
| 128 | + '{ Tuple18($x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x16, $x17, $x18) } |
| 129 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }, '{ $x4: $t4 }, '{ $x5: $t5 }, '{ $x6: $t6 }, '{ $x7: $t7 }, '{ $x8: $t8 }, '{ $x9: $t9 }, '{ $x10: $t10 }, '{ $x11: $t11 }, '{ $x12: $t12 }, '{ $x13: $t13 }, '{ $x14: $t14 }, '{ $x15: $t15 }, '{ $x16: $t16 }, '{ $x17: $t17 }, '{ $x18: $t18 }, '{ $x19: $t19 }) => |
| 130 | + '{ Tuple19($x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x16, $x17, $x18, $x19) } |
| 131 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }, '{ $x4: $t4 }, '{ $x5: $t5 }, '{ $x6: $t6 }, '{ $x7: $t7 }, '{ $x8: $t8 }, '{ $x9: $t9 }, '{ $x10: $t10 }, '{ $x11: $t11 }, '{ $x12: $t12 }, '{ $x13: $t13 }, '{ $x14: $t14 }, '{ $x15: $t15 }, '{ $x16: $t16 }, '{ $x17: $t17 }, '{ $x18: $t18 }, '{ $x19: $t19 }, '{ $x20: $t20 }) => |
| 132 | + '{ Tuple20($x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x16, $x17, $x18, $x19, $x20) } |
| 133 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }, '{ $x4: $t4 }, '{ $x5: $t5 }, '{ $x6: $t6 }, '{ $x7: $t7 }, '{ $x8: $t8 }, '{ $x9: $t9 }, '{ $x10: $t10 }, '{ $x11: $t11 }, '{ $x12: $t12 }, '{ $x13: $t13 }, '{ $x14: $t14 }, '{ $x15: $t15 }, '{ $x16: $t16 }, '{ $x17: $t17 }, '{ $x18: $t18 }, '{ $x19: $t19 }, '{ $x20: $t20 }, '{ $x21: $t21 }) => |
| 134 | + '{ Tuple21($x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x16, $x17, $x18, $x19, $x20, $x21) } |
| 135 | + case Seq('{ $x1: $t1 }, '{ $x2: $t2 }, '{ $x3: $t3 }, '{ $x4: $t4 }, '{ $x5: $t5 }, '{ $x6: $t6 }, '{ $x7: $t7 }, '{ $x8: $t8 }, '{ $x9: $t9 }, '{ $x10: $t10 }, '{ $x11: $t11 }, '{ $x12: $t12 }, '{ $x13: $t13 }, '{ $x14: $t14 }, '{ $x15: $t15 }, '{ $x16: $t16 }, '{ $x17: $t17 }, '{ $x18: $t18 }, '{ $x19: $t19 }, '{ $x20: $t20 }, '{ $x21: $t21 }, '{ $x22: $t22 }) => |
| 136 | + '{ Tuple22($x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x16, $x17, $x18, $x19, $x20, $x21, $x22) } |
| 137 | + case _ => |
| 138 | + '{ Tuple.fromIArray(IArray(${seq.toExprOfSeq}: _*)) } |
| 139 | + } |
| 140 | + } |
| 141 | + } |
| 142 | + |
| 143 | +} |
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