2017-01-05 16:57:48 +08:00
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const assert = @import("std").debug.assert;
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2017-04-09 05:45:22 +08:00
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const mem = @import("std").mem;
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2017-01-05 16:57:48 +08:00
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2017-05-24 09:38:31 +08:00
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test "enum type" {
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2016-12-20 14:50:32 +08:00
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const foo1 = Foo.One {13};
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const foo2 = Foo.Two { Point { .x = 1234, .y = 5678, }};
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const bar = Bar.B;
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assert(bar == Bar.B);
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assert(@memberCount(Foo) == 3);
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assert(@memberCount(Bar) == 4);
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2017-10-01 11:42:44 +08:00
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assert(@sizeOf(Foo) == @sizeOf(FooNoVoid));
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2016-12-20 14:50:32 +08:00
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assert(@sizeOf(Bar) == 1);
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}
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2016-12-22 10:49:05 +08:00
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2017-05-24 09:38:31 +08:00
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test "enum as return value" {
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2016-12-22 10:49:05 +08:00
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switch (returnAnInt(13)) {
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Foo.One => |value| assert(value == 13),
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2017-03-26 16:58:48 +08:00
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else => unreachable,
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2016-12-22 10:49:05 +08:00
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}
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}
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2016-12-20 14:50:32 +08:00
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const Point = struct {
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x: u64,
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y: u64,
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};
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const Foo = enum {
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One: i32,
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Two: Point,
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Three: void,
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};
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2017-10-01 11:42:44 +08:00
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const FooNoVoid = enum {
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One: i32,
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Two: Point,
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};
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2016-12-20 14:50:32 +08:00
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const Bar = enum {
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A,
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B,
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C,
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D,
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};
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2016-12-22 10:49:05 +08:00
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fn returnAnInt(x: i32) -> Foo {
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Foo.One { x }
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}
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2017-05-24 09:38:31 +08:00
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test "constant enum with payload" {
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2016-12-22 14:20:08 +08:00
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var empty = AnEnumWithPayload.Empty;
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var full = AnEnumWithPayload.Full {13};
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shouldBeEmpty(empty);
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shouldBeNotEmpty(full);
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}
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2017-03-26 15:39:18 +08:00
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fn shouldBeEmpty(x: &const AnEnumWithPayload) {
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switch (*x) {
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2016-12-22 14:20:08 +08:00
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AnEnumWithPayload.Empty => {},
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2017-03-26 16:58:48 +08:00
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else => unreachable,
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2016-12-22 14:20:08 +08:00
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}
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}
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2017-03-26 15:39:18 +08:00
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fn shouldBeNotEmpty(x: &const AnEnumWithPayload) {
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switch (*x) {
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2017-03-26 16:58:48 +08:00
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AnEnumWithPayload.Empty => unreachable,
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2016-12-22 14:20:08 +08:00
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else => {},
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}
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}
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const AnEnumWithPayload = enum {
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Empty,
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Full: i32,
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};
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2016-12-26 15:36:04 +08:00
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const Number = enum {
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Zero,
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One,
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Two,
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Three,
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Four,
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};
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2017-05-24 09:38:31 +08:00
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test "enum to int" {
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2016-12-26 15:36:04 +08:00
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shouldEqual(Number.Zero, 0);
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shouldEqual(Number.One, 1);
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shouldEqual(Number.Two, 2);
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shouldEqual(Number.Three, 3);
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shouldEqual(Number.Four, 4);
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}
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fn shouldEqual(n: Number, expected: usize) {
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assert(usize(n) == expected);
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}
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2016-12-26 16:44:59 +08:00
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2017-05-24 09:38:31 +08:00
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test "int to enum" {
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2016-12-27 05:34:18 +08:00
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testIntToEnumEval(3);
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}
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fn testIntToEnumEval(x: i32) {
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assert(IntToEnumNumber(x) == IntToEnumNumber.Three);
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}
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const IntToEnumNumber = enum {
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Zero,
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One,
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Two,
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Three,
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Four,
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};
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2017-04-09 05:45:22 +08:00
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2017-05-24 09:38:31 +08:00
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test "@enumTagName" {
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2017-04-09 05:45:22 +08:00
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assert(mem.eql(u8, testEnumTagNameBare(BareNumber.Three), "Three"));
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comptime assert(mem.eql(u8, testEnumTagNameBare(BareNumber.Three), "Three"));
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}
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fn testEnumTagNameBare(n: BareNumber) -> []const u8 {
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return @enumTagName(n);
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}
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const BareNumber = enum {
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One,
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Two,
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Three,
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};
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2017-06-18 00:30:29 +08:00
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test "enum alignment" {
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2017-08-27 01:51:51 +08:00
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comptime {
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2017-08-29 19:30:22 +08:00
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assert(@alignOf(AlignTestEnum) >= @alignOf([9]u8));
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assert(@alignOf(AlignTestEnum) >= @alignOf(u64));
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2017-08-27 01:51:51 +08:00
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}
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2017-06-18 00:30:29 +08:00
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}
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const AlignTestEnum = enum {
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A: [9]u8,
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B: u64,
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};
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2017-11-09 10:44:10 +08:00
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const ValueCount0 = enum {};
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const ValueCount1 = enum { I0 };
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const ValueCount2 = enum { I0, I1 };
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const ValueCount256 = enum {
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I0, I1, I2, I3, I4, I5, I6, I7, I8, I9, I10, I11, I12, I13, I14, I15,
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I16, I17, I18, I19, I20, I21, I22, I23, I24, I25, I26, I27, I28, I29, I30, I31,
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I32, I33, I34, I35, I36, I37, I38, I39, I40, I41, I42, I43, I44, I45, I46, I47,
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I48, I49, I50, I51, I52, I53, I54, I55, I56, I57, I58, I59, I60, I61, I62, I63,
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I64, I65, I66, I67, I68, I69, I70, I71, I72, I73, I74, I75, I76, I77, I78, I79,
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I80, I81, I82, I83, I84, I85, I86, I87, I88, I89, I90, I91, I92, I93, I94, I95,
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I96, I97, I98, I99, I100, I101, I102, I103, I104, I105, I106, I107, I108, I109,
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I110, I111, I112, I113, I114, I115, I116, I117, I118, I119, I120, I121, I122, I123,
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I124, I125, I126, I127, I128, I129, I130, I131, I132, I133, I134, I135, I136, I137,
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I138, I139, I140, I141, I142, I143, I144, I145, I146, I147, I148, I149, I150, I151,
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I152, I153, I154, I155, I156, I157, I158, I159, I160, I161, I162, I163, I164, I165,
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I166, I167, I168, I169, I170, I171, I172, I173, I174, I175, I176, I177, I178, I179,
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I180, I181, I182, I183, I184, I185, I186, I187, I188, I189, I190, I191, I192, I193,
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I194, I195, I196, I197, I198, I199, I200, I201, I202, I203, I204, I205, I206, I207,
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I208, I209, I210, I211, I212, I213, I214, I215, I216, I217, I218, I219, I220, I221,
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I222, I223, I224, I225, I226, I227, I228, I229, I230, I231, I232, I233, I234, I235,
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I236, I237, I238, I239, I240, I241, I242, I243, I244, I245, I246, I247, I248, I249,
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I250, I251, I252, I253, I254, I255
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};
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const ValueCount257 = enum {
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I0, I1, I2, I3, I4, I5, I6, I7, I8, I9, I10, I11, I12, I13, I14, I15,
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I16, I17, I18, I19, I20, I21, I22, I23, I24, I25, I26, I27, I28, I29, I30, I31,
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I32, I33, I34, I35, I36, I37, I38, I39, I40, I41, I42, I43, I44, I45, I46, I47,
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I48, I49, I50, I51, I52, I53, I54, I55, I56, I57, I58, I59, I60, I61, I62, I63,
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I64, I65, I66, I67, I68, I69, I70, I71, I72, I73, I74, I75, I76, I77, I78, I79,
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I80, I81, I82, I83, I84, I85, I86, I87, I88, I89, I90, I91, I92, I93, I94, I95,
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I96, I97, I98, I99, I100, I101, I102, I103, I104, I105, I106, I107, I108, I109,
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I110, I111, I112, I113, I114, I115, I116, I117, I118, I119, I120, I121, I122, I123,
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I124, I125, I126, I127, I128, I129, I130, I131, I132, I133, I134, I135, I136, I137,
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I138, I139, I140, I141, I142, I143, I144, I145, I146, I147, I148, I149, I150, I151,
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I152, I153, I154, I155, I156, I157, I158, I159, I160, I161, I162, I163, I164, I165,
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I166, I167, I168, I169, I170, I171, I172, I173, I174, I175, I176, I177, I178, I179,
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I180, I181, I182, I183, I184, I185, I186, I187, I188, I189, I190, I191, I192, I193,
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I194, I195, I196, I197, I198, I199, I200, I201, I202, I203, I204, I205, I206, I207,
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I208, I209, I210, I211, I212, I213, I214, I215, I216, I217, I218, I219, I220, I221,
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I222, I223, I224, I225, I226, I227, I228, I229, I230, I231, I232, I233, I234, I235,
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I236, I237, I238, I239, I240, I241, I242, I243, I244, I245, I246, I247, I248, I249,
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I250, I251, I252, I253, I254, I255, I256
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};
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test "enum sizes" {
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comptime {
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assert(@sizeOf(ValueCount0) == 0);
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assert(@sizeOf(ValueCount1) == 0);
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assert(@sizeOf(ValueCount2) == 1);
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assert(@sizeOf(ValueCount256) == 1);
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assert(@sizeOf(ValueCount257) == 2);
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}
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}
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