47 lines
1.2 KiB
Zig
47 lines
1.2 KiB
Zig
const expect = @import("std").testing.expect;
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const builtin = @import("builtin");
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test "@fieldParentPtr non-first field" {
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if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
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if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
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try testParentFieldPtr(&foo.c);
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comptime try testParentFieldPtr(&foo.c);
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}
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test "@fieldParentPtr first field" {
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if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
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if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
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try testParentFieldPtrFirst(&foo.a);
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comptime try testParentFieldPtrFirst(&foo.a);
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}
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const Foo = struct {
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a: bool,
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b: f32,
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c: i32,
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d: i32,
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};
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const foo = Foo{
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.a = true,
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.b = 0.123,
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.c = 1234,
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.d = -10,
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};
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fn testParentFieldPtr(c: *const i32) !void {
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try expect(c == &foo.c);
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const base = @fieldParentPtr(Foo, "c", c);
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try expect(base == &foo);
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try expect(&base.c == c);
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}
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fn testParentFieldPtrFirst(a: *const bool) !void {
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try expect(a == &foo.a);
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const base = @fieldParentPtr(Foo, "a", a);
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try expect(base == &foo);
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try expect(&base.a == a);
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}
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