tiny.preserves.parsedEmbeddedOps

1/// Returns one table whose equality, hash and order read each payload as a pointer to a `Value` and2/// call `eql`, `hash` and `compare` on it. The text parser, the JSON reader and `observeRecord`3/// call it when they wrap a value as an embedded payload. The table is one constant per `Value`4/// type, so payloads built by the text parser, the JSON reader and `observeRecord` compare with5/// each other. `toText` checks for this table to print the payload as a value.6pub fn parsedEmbeddedOps(comptime Value: type) *const SemanticOps {7    const Impl = struct {8        fn eql(a: *anyopaque, b: *anyopaque) bool {9            const va: *const Value = @ptrCast(@alignCast(a));10            const vb: *const Value = @ptrCast(@alignCast(b));11            return va.*.eql(vb.*);12        }1314        fn hash(ptr: *anyopaque) u64 {15            const v: *const Value = @ptrCast(@alignCast(ptr));16            return v.*.hash();17        }1819        fn order(a: *anyopaque, b: *anyopaque) std.math.Order {20            const va: *const Value = @ptrCast(@alignCast(a));21            const vb: *const Value = @ptrCast(@alignCast(b));22            return va.*.compare(vb.*);23        }2425        const ops: SemanticOps = .{26            .eql = &eql,27            .hash = &hash,28            .order = &order,29        };30    };31    return &Impl.ops;32}

1pub const parsedEmbeddedOps = embedded_mod.parsedEmbeddedOps;