Use u128 as backing field for Uuid

src/util/Uuid.zig

@@ -2,33 +2,34 @@ const Uuid = @This();
 
 const std = @import("std");
 
-data: [16]u8,
+data: u128,
 
-pub const Nil = Uuid{ .data = @bitCast([16]u8, @as(u128, 0)) };
+pub const Nil = Uuid{ .data = @as(u128, 0) };
 pub const StringLen = 36;
 
 pub fn eql(lhs: Uuid, rhs: Uuid) bool {
-    return std.mem.eql(u8, &lhs.data, &rhs.data);
+    return lhs.data == rhs.data;
 }
 
 pub fn format(value: Uuid, comptime _: []const u8, _: std.fmt.FormatOptions, writer: anytype) !void {
+    const arr = @bitCast([16]u8, value.data);
     try std.fmt.format(writer, "{x:0>2}{x:0>2}{x:0>2}{x:0>2}-{x:0>2}{x:0>2}-{x:0>2}{x:0>2}-{x:0>2}{x:0>2}-{x:0>2}{x:0>2}{x:0>2}{x:0>2}{x:0>2}{x:0>2}", .{
-        value.data[0],
+        arr[0],
-        value.data[1],
+        arr[1],
-        value.data[2],
+        arr[2],
-        value.data[3],
+        arr[3],
-        value.data[4],
+        arr[4],
-        value.data[5],
+        arr[5],
-        value.data[6],
+        arr[6],
-        value.data[7],
+        arr[7],
-        value.data[8],
+        arr[8],
-        value.data[9],
+        arr[9],
-        value.data[10],
+        arr[10],
-        value.data[11],
+        arr[11],
-        value.data[12],
+        arr[12],
-        value.data[13],
+        arr[13],
-        value.data[14],
+        arr[14],
-        value.data[15],
+        arr[15],
     });
 }
 
@@ -40,14 +41,14 @@ pub const ParseError = error{
 pub fn parse(str: []const u8) ParseError!Uuid {
     if (str.len != StringLen) return error.InvalidLength;
 
-    var uuid: Uuid = undefined;
+    var data: [16]u8 = undefined;
     var str_i: usize = 0;
     var i: usize = 0;
     while (i < 16 and str_i < str.len) : ({
         i += 1;
         str_i += 2;
     }) {
-        uuid.data[i] = std.fmt.parseInt(u8, str[str_i .. str_i + 2], 16) catch |err| switch (err) {
+        data[i] = std.fmt.parseInt(u8, str[str_i .. str_i + 2], 16) catch |err| switch (err) {
             error.InvalidCharacter => return error.InvalidCharacter,
             else => unreachable,
         };
@@ -58,18 +59,18 @@ pub fn parse(str: []const u8) ParseError!Uuid {
         }
     }
 
-    return uuid;
+    return Uuid{ .data = @bitCast(u128, data) };
 }
 
 pub fn randV4(rand: std.rand.Random) Uuid {
-    var ret: Uuid = undefined;
+    var ret: [16]u8 = undefined;
-    rand.bytes(&ret.data);
+    rand.bytes(&ret);
 
     // signify that this is a random v4 uuid
-    ret.data[7] = (0b0100_0000) | (ret.data[7] & 0b1111);
+    ret[7] = (0b0100_0000) | (ret[7] & 0b1111);
-    ret.data[9] = (0b1000_0000) | (ret.data[9] & 0b11_1111);
+    ret[9] = (0b1000_0000) | (ret[9] & 0b11_1111);
 
-    return ret;
+    return Uuid{ .data = @bitCast(u128, ret) };
 }
 
 test "parse uuid" {
@@ -80,7 +81,7 @@ test "parse uuid" {
 
     try std.testing.expectEqual(
         Uuid{
-            .data = @bitCast([16]u8, @as(u128, 0x4ba7b74522ad_1da8_c242_d312_60515ff7)),
+            .data = @as(u128, 0x4ba7b74522ad_1da8_c242_d312_60515ff7),
         },
         try Uuid.parse("f75f5160-12d3-42c2-a81d-ad2245b7a74b"),
     );
@@ -90,7 +91,7 @@ test "format uuid" {
     try std.testing.expectFmt("00000000-0000-0000-0000-000000000000", "{}", .{Uuid.Nil});
 
     const uuid = Uuid{
-        .data = @bitCast([16]u8, @as(u128, 0x4ba7b74522ad_1da8_c242_d312_60515ff7)),
+        .data = @as(u128, 0x4ba7b74522ad_1da8_c242_d312_60515ff7),
     };
     try std.testing.expectFmt("f75f5160-12d3-42c2-a81d-ad2245b7a74b", "{}", .{uuid});