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std.meta.eql: use == directly when comparing packed structs (#21982)

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Fri3dNstuff 2024-11-25 00:29:44 +02:00 committed by GitHub
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1 changed files with 4 additions and 2 deletions
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lib/std/meta.zig
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@ -737,13 +737,15 @@ test TagPayload {
try testing.expect(MovedEvent == @TypeOf(e.Moved)); try testing.expect(MovedEvent == @TypeOf(e.Moved));
} }
/// Compares two of any type for equality. Containers are compared on a field-by-field basis, /// Compares two of any type for equality. Containers that do not support comparison
/// where possible. Pointers are not followed. /// on their own are compared on a field-by-field basis. Pointers are not followed.
pub fn eql(a: anytype, b: @TypeOf(a)) bool { pub fn eql(a: anytype, b: @TypeOf(a)) bool {
const T = @TypeOf(a); const T = @TypeOf(a);
switch (@typeInfo(T)) { switch (@typeInfo(T)) {
.@"struct" => |info| { .@"struct" => |info| {
if (info.layout == .@"packed") return a == b;
inline for (info.fields) |field_info| { inline for (info.fields) |field_info| {
if (!eql(@field(a, field_info.name), @field(b, field_info.name))) return false; if (!eql(@field(a, field_info.name), @field(b, field_info.name))) return false;
} }