42 lines
789 B
Zig
42 lines
789 B
Zig
const assert = @import("std").debug.assert;
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test "@fieldParentPtr non-first field" {
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testParentFieldPtr(&foo.c);
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comptime testParentFieldPtr(&foo.c);
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}
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test "@fieldParentPtr first field" {
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testParentFieldPtrFirst(&foo.a);
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comptime 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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assert(c == &foo.c);
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const base = @fieldParentPtr(Foo, "c", c);
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assert(base == &foo);
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assert(&base.c == c);
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}
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fn testParentFieldPtrFirst(a: &const bool) void {
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assert(a == &foo.a);
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const base = @fieldParentPtr(Foo, "a", a);
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assert(base == &foo);
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assert(&base.a == a);
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}
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