1 files changed, 56 insertions, 0 deletions
diff --git a/src/libzisp/value/seq.zig b/src/libzisp/value/seq.zig
new file mode 100644
index 0000000..5382a7e
--- /dev/null
+++ b/src/libzisp/value/seq.zig
@@ -0,0 +1,56 @@
+const builtin = @import("builtin");
+const std = @import("std");
+
+const value = @import("../value.zig");
+const gc = @import("../gc.zig");
+
+const Value = value.Value;
+
+const Endian = enum(u1) {
+    little,
+    big,
+
+    const native: Endian = switch (builtin.target.cpu.arch.endian()) {
+        .little => .little,
+        .big => .big,
+    };
+};
+
+pub const Header = packed struct(u64) {
+    type: enum(u2) {
+        values,
+        string,
+        ints,
+        floats,
+    },
+    info: packed union {
+        values: packed struct(u14) {
+            weak: bool = false,
+            _: u13 = 0,
+        },
+        string: packed struct(u14) {
+            enc: enum(u4) { utf8, utf16, utf24, utf32 },
+            endian: Endian = .native,
+            quoted: bool,
+            interned: bool,
+            _: u7 = 0,
+        },
+        ints: packed struct(u14) {
+            signed: bool,
+            endian: Endian = .native,
+            size: u12,
+        },
+        floats: packed struct(u14) {
+            double: bool,
+            endian: Endian = .native,
+            _: u12 = 0,
+        },
+    },
+    size: u48,
+
+    pub fn bytes(self: *Header) []u8 {
+        const ptr: [*]u8 = @ptrCast(self);
+        const end = 8 + self.size;
+        return ptr[8..end];
+    }
+};