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| 1 | +import language.experimental.erasedDefinitions |
| 2 | + |
| 3 | +// Source code |
| 4 | + |
| 5 | +/*inline*/ trait Iterator[T/*: Specialized*/]: |
| 6 | + def hasNext: Boolean |
| 7 | + def next(): T |
| 8 | + |
| 9 | +/*inline*/ trait ArrayIterator[T/*: Specialized*/](elems: Array[T]) extends Iterator[T]: |
| 10 | + private var current = 0 |
| 11 | + def hasNext: Boolean = current < elems.length |
| 12 | + def next(): T = try elems(current) finally current += 1 |
| 13 | + |
| 14 | +/*inline*/ trait Iterable[T/*: Specialized*/]: |
| 15 | + def iterator: Iterator[T] |
| 16 | + def forall(f: T => Unit): Unit = |
| 17 | + val it = iterator |
| 18 | + while it.hasNext do f(it.next()) |
| 19 | + |
| 20 | +/*inline*/ trait Vec[T/*: Specialized*/](elems: Array[T]) |
| 21 | +extends Iterable[T]: |
| 22 | + def length: Int = elems.length |
| 23 | + def apply(i: Int): T = elems(i) |
| 24 | + def iterator: Iterator[T] = new ArrayIterator[T](elems) {} |
| 25 | + |
| 26 | +// Specialized trait APIs generated from specialization: |
| 27 | + |
| 28 | +trait Iterator_Int extends Iterator[Int]: |
| 29 | + def hasNext: Boolean |
| 30 | + def next(): Int |
| 31 | + |
| 32 | +trait ArrayIterator_Int extends ArrayIterator[Int], Iterator[Int] |
| 33 | + |
| 34 | +trait Iterable_Int extends Iterable[Int]: |
| 35 | + def iterator: Iterator_Int |
| 36 | + def forall(f: Int => Unit): Unit |
| 37 | + |
| 38 | +trait Vec_Int extends Vec[Int], Iterable[Int]: |
| 39 | + def length: Int |
| 40 | + def apply(i: Int): Int |
| 41 | + |
| 42 | +class ArrayIterator_Int$impl(elems: Array[Int]) extends ArrayIterator_Int |
| 43 | + , ArrayIterator[Int](elems): // snd parent not needed in actual translation |
| 44 | + private var current = 0 |
| 45 | + override def hasNext: Boolean = |
| 46 | + current < elems.length |
| 47 | + override def next(): Int = |
| 48 | + try elems(current) finally current += 1 |
| 49 | + |
| 50 | +class Vec_Int$impl(elems: Array[Int]) extends Vec_Int |
| 51 | + , Vec[Int](elems): // snd parent not needed in actual translation |
| 52 | + override def iterator: Iterator_Int = |
| 53 | + new ArrayIterator_Int$impl(elems).asInstanceOf |
| 54 | + // cast needed since the compiler does not not know that Iterable[Int] = Iterable_Int |
| 55 | + // after erasure. No cast would be needed in the actual translation. |
| 56 | + |
| 57 | + override def forall(f: Int => Unit): Unit = |
| 58 | + val it = iterator |
| 59 | + while it.hasNext do f(it.next()) |
| 60 | + override def length: Int = elems.length |
| 61 | + override def apply(i: Int): Int = elems(i) |
| 62 | + |
| 63 | +// Inline trait APIs generated from inline traits transform: |
| 64 | +object InlineTraitAPIs: |
| 65 | + |
| 66 | + trait Iterator[T]: |
| 67 | + def hasNext: Boolean |
| 68 | + def next(): T |
| 69 | + |
| 70 | + trait ArrayIterator[T] extends Iterator[T] |
| 71 | + |
| 72 | + trait Iterable[T]: |
| 73 | + def iterator: Iterator[T] |
| 74 | + def forall(f: T => Unit): Unit |
| 75 | + |
| 76 | + trait Vec[T] extends Iterable[T]: |
| 77 | + def length: Int |
| 78 | + def apply(i: Int): T |
| 79 | +end InlineTraitAPIs |
| 80 | + |
| 81 | +/* Code after erasure: */ |
| 82 | +object AfterErasure: |
| 83 | + |
| 84 | + trait Function1: |
| 85 | + def apply(x: Any): Any |
| 86 | + def apply_Int_Unit(x: Int): Unit |
| 87 | + |
| 88 | + trait Iterator: |
| 89 | + def hasNext: Boolean |
| 90 | + def next(): Any |
| 91 | + |
| 92 | + trait ArrayIterator extends Iterator |
| 93 | + |
| 94 | + trait Iterable: |
| 95 | + def iterator: Iterator |
| 96 | + def forall(f: Function1): Unit |
| 97 | + |
| 98 | + trait Vec: |
| 99 | + def length: Int |
| 100 | + def apply(i: Int): Any |
| 101 | + |
| 102 | + trait Iterator_Int extends Iterator: |
| 103 | + def hasNext: Boolean |
| 104 | + def next(): Int |
| 105 | + |
| 106 | + trait ArrayIterator_Int extends ArrayIterator, Iterator_Int |
| 107 | + |
| 108 | + trait Iterable_Int extends Iterable: |
| 109 | + def iterator: Iterator_Int |
| 110 | + def forall(f: Function1): Unit |
| 111 | + |
| 112 | + trait Vec_Int extends Vec, Iterable_Int: |
| 113 | + def length: Int |
| 114 | + def apply(i: Int): Int |
| 115 | + |
| 116 | + class ArrayIterator_Int$impl(elems: Array[Int]) extends ArrayIterator_Int: |
| 117 | + private var current = 0 |
| 118 | + override def hasNext: Boolean = |
| 119 | + current < elems.length |
| 120 | + override def next(): Int = |
| 121 | + try elems(current) finally current += 1 |
| 122 | + |
| 123 | + /* Bridges: |
| 124 | + override def next(): Any = Int.box(next()) |
| 125 | + */ |
| 126 | + end ArrayIterator_Int$impl |
| 127 | + |
| 128 | + class Vec_Int$impl(elems: Array[Int]) extends Vec_Int: |
| 129 | + override def iterator: Iterator_Int = |
| 130 | + new ArrayIterator_Int$impl(elems) |
| 131 | + override def forall(f: Function1): Unit = |
| 132 | + val it = iterator |
| 133 | + while it.hasNext do f.apply_Int_Unit(it.next()) |
| 134 | + override def length: Int = elems.length |
| 135 | + override def apply(i: Int): Int = elems(i) |
| 136 | + |
| 137 | + /* Bridges: |
| 138 | + override def iterator: Iterator = iterator |
| 139 | + override def apply(i: Int): Any = Int.box(apply(i)) |
| 140 | + */ |
| 141 | + end Vec_Int$impl |
| 142 | + |
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