compiler/
lib/
examples/
std/
arch/
rv64/
tests/
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690 B
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410 B
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tests.rad
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rv64.rad
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collections/
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collections.rad
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vec.rad
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std.rad
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LICENSE
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README
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std.lib
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std.lib.test
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lib/std/arch/rv64/tests/match.nested.deref.rad
raw
| 1 | //! Test nested patterns through pointer dereferences (auto-deref). |
| 2 | |
| 3 | union Inner { |
| 4 | A(i32), |
| 5 | B, |
| 6 | } |
| 7 | |
| 8 | union Outer { |
| 9 | Some(*Inner), |
| 10 | None, |
| 11 | } |
| 12 | |
| 13 | /// Match nested union variant through pointer dereference in match/case. |
| 14 | fn matchDeref(o: Outer) -> i32 { |
| 15 | match o { |
| 16 | case Outer::Some(Inner::A(x)) => { |
| 17 | return x; |
| 18 | } |
| 19 | case Outer::Some(Inner::B) => { |
| 20 | return -1; |
| 21 | } |
| 22 | else => { |
| 23 | return -2; |
| 24 | } |
| 25 | } |
| 26 | } |
| 27 | |
| 28 | /// If-let-case with auto-deref nested pattern. |
| 29 | fn ifLetDeref(o: Outer) -> i32 { |
| 30 | if let case Outer::Some(Inner::A(x)) = o { |
| 31 | return x; |
| 32 | } |
| 33 | return 0; |
| 34 | } |
| 35 | |
| 36 | /// Let-else with auto-deref nested pattern. |
| 37 | fn letElseDeref(o: Outer) -> i32 { |
| 38 | let case Outer::Some(Inner::A(x)) = o |
| 39 | else { return -1; }; |
| 40 | return x; |
| 41 | } |
| 42 | |
| 43 | /// Record with pointer field and nested pattern through deref. |
| 44 | record Container { |
| 45 | inner: *Inner, |
| 46 | tag: i32, |
| 47 | } |
| 48 | |
| 49 | union Boxed { |
| 50 | Some { c: Container }, |
| 51 | None, |
| 52 | } |
| 53 | |
| 54 | /// Nested record with auto-deref on a pointer field. |
| 55 | fn matchRecordDeref(b: Boxed) -> i32 { |
| 56 | match b { |
| 57 | case Boxed::Some { c: Container { inner: Inner::A(val), tag } } => { |
| 58 | return val + tag; |
| 59 | } |
| 60 | else => { |
| 61 | return 0; |
| 62 | } |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | /// Auto-deref through pointer in if-let-case with record. |
| 67 | fn ifLetRecordDeref(b: Boxed) -> i32 { |
| 68 | if let case Boxed::Some { c: Container { inner: Inner::A(val), tag } } = b { |
| 69 | return val + tag; |
| 70 | } |
| 71 | return 0; |
| 72 | } |
| 73 | |
| 74 | /// Void variant through pointer deref. |
| 75 | fn matchDerefVoid(o: Outer) -> i32 { |
| 76 | if let case Outer::Some(Inner::B) = o { |
| 77 | return 1; |
| 78 | } |
| 79 | return 0; |
| 80 | } |
| 81 | |
| 82 | /// Auto-deref with placeholder in nested pattern. |
| 83 | fn matchDerefPlaceholder(o: Outer) -> i32 { |
| 84 | if let case Outer::Some(Inner::A(_)) = o { |
| 85 | return 1; |
| 86 | } |
| 87 | return 0; |
| 88 | } |
| 89 | |
| 90 | /// Auto-deref through pointer to record in a record field. |
| 91 | record Point { |
| 92 | x: i32, |
| 93 | y: i32, |
| 94 | } |
| 95 | |
| 96 | union Holder { |
| 97 | Ptr { p: *Point, z: i32 }, |
| 98 | Empty, |
| 99 | } |
| 100 | |
| 101 | fn derefRecordField(h: Holder) -> i32 { |
| 102 | if let case Holder::Ptr { p: Point { x, y }, z } = h { |
| 103 | return x + y + z; |
| 104 | } |
| 105 | return 0; |
| 106 | } |
| 107 | |
| 108 | @default fn main() -> i32 { |
| 109 | let innerA = Inner::A(42); |
| 110 | let innerB = Inner::B; |
| 111 | |
| 112 | // matchDeref |
| 113 | assert matchDeref(Outer::Some(&innerA)) == 42; |
| 114 | assert matchDeref(Outer::Some(&innerB)) == -1; |
| 115 | assert matchDeref(Outer::None) == -2; |
| 116 | |
| 117 | // ifLetDeref |
| 118 | assert ifLetDeref(Outer::Some(&innerA)) == 42; |
| 119 | assert ifLetDeref(Outer::Some(&innerB)) == 0; |
| 120 | assert ifLetDeref(Outer::None) == 0; |
| 121 | |
| 122 | // letElseDeref |
| 123 | assert letElseDeref(Outer::Some(&innerA)) == 42; |
| 124 | assert letElseDeref(Outer::Some(&innerB)) == -1; |
| 125 | assert letElseDeref(Outer::None) == -1; |
| 126 | |
| 127 | // matchRecordDeref |
| 128 | let c1 = Boxed::Some { c: Container { inner: &innerA, tag: 10 } }; |
| 129 | assert matchRecordDeref(c1) == 52; |
| 130 | let c2 = Boxed::Some { c: Container { inner: &innerB, tag: 20 } }; |
| 131 | assert matchRecordDeref(c2) == 0; |
| 132 | assert matchRecordDeref(Boxed::None) == 0; |
| 133 | |
| 134 | // ifLetRecordDeref |
| 135 | assert ifLetRecordDeref(c1) == 52; |
| 136 | assert ifLetRecordDeref(c2) == 0; |
| 137 | assert ifLetRecordDeref(Boxed::None) == 0; |
| 138 | |
| 139 | // matchDerefVoid |
| 140 | assert matchDerefVoid(Outer::Some(&innerA)) == 0; |
| 141 | assert matchDerefVoid(Outer::Some(&innerB)) == 1; |
| 142 | assert matchDerefVoid(Outer::None) == 0; |
| 143 | |
| 144 | // matchDerefPlaceholder |
| 145 | assert matchDerefPlaceholder(Outer::Some(&innerA)) == 1; |
| 146 | assert matchDerefPlaceholder(Outer::Some(&innerB)) == 0; |
| 147 | assert matchDerefPlaceholder(Outer::None) == 0; |
| 148 | |
| 149 | // derefRecordField |
| 150 | let pt = Point { x: 3, y: 4 }; |
| 151 | let h1 = Holder::Ptr { p: &pt, z: 5 }; |
| 152 | assert derefRecordField(h1) == 12; |
| 153 | assert derefRecordField(Holder::Empty) == 0; |
| 154 | |
| 155 | return 0; |
| 156 | } |