commit a8468a99ebb7891ba4de04881f4409b653d9190b
Author: yukirij <yukirij@yukiri.net>
Date:   Sun Nov 3 18:21:41 2024 -0800

    Initialize repository.

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..96ef6c0
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/target
+Cargo.lock
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..d889142
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "szun"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+num = "0.4.3"
+
+pack = { git = "https://git.tsukiyo.org/Utility/pack" }
diff --git a/src/bin/test.rs b/src/bin/test.rs
new file mode 100644
index 0000000..7ad9a74
--- /dev/null
+++ b/src/bin/test.rs
@@ -0,0 +1,44 @@
+use szun::*;
+
+fn main()
+{
+    {
+        let data = Boolean::new().with(true);
+        println!("bool {}", data.get());
+    }
+
+    {
+        let data = Natural::new().with(15);
+        println!("nat {}", data.get::<u32>());
+    }
+
+    {
+        let data = Integer::new().with(-55);
+        println!("int {}", data.get::<i32>());
+    }
+
+    {
+        let (data, mut value) = Optional::<Integer>::new().with_default();
+        value.set(-1);
+        println!("opt {}", data.is_some());
+
+        if let Some(data) = data.get() {
+            println!("opt {}", data.get::<i32>());
+        }
+
+        data.unset();
+        println!("opt {}", data.is_some());
+    }
+
+    {
+        let seq = Sequence::new().with_str("Hello, world!");
+        println!("{} {} {}", seq.len(), seq.capacity(), seq.get_str());
+    }
+
+    {
+        let a = Integer::new().with(100);
+        let b = a.clone();
+
+        println!("100 <> {}, {}", a.get::<i32>(), b.get::<i32>());
+    }
+}
diff --git a/src/implement/any.rs b/src/implement/any.rs
new file mode 100644
index 0000000..31caf0f
--- /dev/null
+++ b/src/implement/any.rs
@@ -0,0 +1,26 @@
+use crate::prelude::{*, internal::*};
+
+pub struct Any {
+    pub(crate) refer:Ref,
+}
+impl Any {
+    pub fn null() -> Self
+    {
+        Self { refer:Ref::null() }
+    }
+
+    pub fn typeid(&self) -> usize { self.refer.typeid() }
+}
+impl Szun for Any {
+    fn typeid() -> usize { 0 }
+}
+impl internal::SzunInternal for Any {
+    fn to_ref(&self) -> Ref { self.refer }
+    fn from_ref(refer:Ref) -> Self { Self { refer } }
+}
+impl Clone for Any {
+    fn clone(&self) -> Self { Self::from_ref(clone(self.to_ref(), None)) }
+}
+impl Drop for Any {
+    fn drop(&mut self) { drop(self.to_ref()); }
+}
diff --git a/src/implement/array.rs b/src/implement/array.rs
new file mode 100644
index 0000000..2d65b52
--- /dev/null
+++ b/src/implement/array.rs
@@ -0,0 +1,67 @@
+use std::marker::PhantomData;
+use crate::{prelude::{*, internal::*},  Runtime, Any, types};
+
+pub struct Array<T:Szun, const N:usize> {
+    refer:Ref,
+    phantom:PhantomData<T>,
+}
+impl<T:Szun, const N:usize> Array<T,N> {
+    pub fn new() -> Self {
+        Self {
+            refer:Runtime::acquire(Self::typeid()),
+            phantom:PhantomData,
+        }
+    }
+
+    pub fn with<R:Szun>(self, data:&[R]) -> Self
+    {
+        self.set(data);
+        self
+    }
+
+    pub fn set<R:Szun>(&self, data:&[R])
+    {
+        for i in 0..data.len() {
+            let _refer = data[i].to_ref();
+            /*if self.compatible(&data[i]) {
+
+                let inner_type = Runtime::type_in(self.refer.typeid());
+                let inner_size = types::size(inner_type);
+
+                let mut bytes = vec![0u8; types::size(inner_type)];
+
+                Runtime::load(data[i].to_ref(), bytes.as_ptr() as _, 0, inner_size);
+
+                Runtime::store(self.refer, bytes.as_ptr() as _, 0, inner_size);
+                Runtime::write(self.refer, 0xFF, inner_size);
+
+                if !types::primitive(data[i].to_ref().typeid()) {
+                    bytes.fill(0);
+                    Runtime::store(data[i].to_ref(), bytes.as_ptr() as _, 0, inner_size);
+                }
+            }*/
+        }
+    }
+
+    pub fn get(&self) -> std::option::Option<T>
+    {
+        let inner_type = Runtime::type_in(self.refer.typeid());
+
+        let mut flag :u8 = 0;
+        Runtime::load(self.refer, &mut flag as _, types::size(inner_type), 1);
+        if flag != 0 {
+            let refer = self.refer;
+            Some(T::from_ref(refer.inner()))
+        } else {
+            None
+        }
+    }
+}
+impl<T:Szun, const N:usize> Szun for Array<T,N> {
+    fn typeid() -> usize { Runtime::type_from(T::typeid(), &[N, types::ARRAY]) }
+}
+impl<T:Szun, const N:usize> internal::SzunInternal for Array<T,N> {
+    fn to_ref(&self) -> Ref { self.refer }
+    fn from_ref(refer:Ref) -> Self { Self { refer, phantom:PhantomData } }
+}
+crate::impl_szun_generic_sized!(Array<T, N>);
diff --git a/src/implement/block.rs b/src/implement/block.rs
new file mode 100644
index 0000000..0de0332
--- /dev/null
+++ b/src/implement/block.rs
@@ -0,0 +1,65 @@
+use crate::{prelude::{*, internal::*}, Runtime, Any, types};
+
+pub struct Block<const N:usize> {
+    refer:Ref,
+}
+impl<const N:usize> Block<N> {
+    pub fn new() -> Self {
+        Self {
+            refer:Runtime::acquire(Self::typeid()),
+        }
+    }
+
+    pub fn with(mut self, data:&[u8]) -> Self
+    {
+        self.set(data);
+        self
+    }
+
+    pub fn set(&mut self, data:&[u8])
+    {
+        let size = Runtime::type_of(Runtime::type_in(self.refer.typeid()));
+        let mut write = data.to_vec();
+        write.resize(size, 0);
+        Runtime::store(self.refer, write.as_ptr() as _, 0, types::size(self.refer.typeid()));
+    }
+
+    pub fn set_byte(&mut self, index:usize, byte:u8)
+    {
+        if index < self.len() {
+            Runtime::store(self.refer, &byte as _, index, 1);
+        }
+    }
+
+    pub fn get(&self) -> Vec<u8>
+    {
+        let size = Runtime::type_of(Runtime::type_in(self.refer.typeid()));
+        let mut data = vec![0u8; size];
+        Runtime::load(self.refer, data.as_mut_ptr() as _, 0, types::size(self.refer.typeid()));
+        data
+    }
+
+    pub fn get_byte(&mut self, index:usize) -> u8
+    {
+        if index < self.len() {
+            let mut byte = 0u8;
+            Runtime::load(self.refer, &mut byte as _, index, 1);
+            byte
+        } else {
+            0
+        }
+    }
+
+    pub fn len(&self) -> usize
+    {
+        Runtime::type_of(Runtime::type_in(self.refer.typeid()))
+    }
+}
+impl<const N:usize> Szun for Block<N> {
+    fn typeid() -> usize { Runtime::type_from(types::ANY, &[N, types::BLOCK]) }
+}
+impl<const N:usize> SzunInternal for Block<N> {
+    fn to_ref(&self) -> Ref { self.refer }
+    fn from_ref(refer:Ref) -> Self { Self { refer } }
+}
+crate::impl_szun_sized!(Block<N>);
diff --git a/src/implement/boolean.rs b/src/implement/boolean.rs
new file mode 100644
index 0000000..4f55fb0
--- /dev/null
+++ b/src/implement/boolean.rs
@@ -0,0 +1,42 @@
+use crate::{prelude::{*, internal::*}, Runtime, Any, types};
+
+pub struct Boolean {
+    refer:Ref,
+}
+impl Boolean {
+    pub fn new() -> Self {
+        Self {
+            refer:Runtime::acquire(Self::typeid()),
+        }
+    }
+
+    pub fn with(self, data:bool) -> Self
+    {
+        self.set(data);
+        self
+    }
+
+    pub fn set(&self, data:bool)
+    {
+        if let Some(memory) = unsafe {(self.refer.address_mut() as *mut bool).as_mut()} {
+            *memory = data;
+        }
+    }
+
+    pub fn get(&self) -> bool
+    {
+        if let Some(memory) = unsafe {(self.refer.address() as *const bool).as_ref()} {
+            *memory
+        } else {
+            false
+        }
+    }
+}
+impl Szun for Boolean {
+    fn typeid() -> usize { Runtime::type_from(types::ANY, &[types::BOOLEAN]) }
+}
+impl SzunInternal for Boolean {
+    fn to_ref(&self) -> Ref { self.refer }
+    fn from_ref(refer:Ref) -> Self { Self { refer } }
+}
+crate::impl_szun!(Boolean);
diff --git a/src/implement/integer.rs b/src/implement/integer.rs
new file mode 100644
index 0000000..d43a1b4
--- /dev/null
+++ b/src/implement/integer.rs
@@ -0,0 +1,43 @@
+use crate::{prelude::{*, internal::*}, Runtime, Any, types};
+
+pub struct Integer {
+    refer:Ref,
+}
+impl Integer {
+    pub fn new() -> Self {
+        Self {
+            refer:Runtime::acquire(Self::typeid()),
+        }
+    }
+
+    pub fn with<T:num::ToPrimitive>(mut self, data:T) -> Self
+    {
+        self.set(data);
+        self
+    }
+
+    pub fn set<T:num::ToPrimitive>(&mut self, data:T)
+    {
+        let data = data.to_i64().unwrap_or_default();
+        if let Some(memory) = unsafe {(self.refer.address_mut() as *mut i64).as_mut()} {
+            *memory = data;
+        }
+    }
+
+    pub fn get<T:num::FromPrimitive + Default>(&self) -> T
+    {
+        T::from_i64(if let Some(memory) = unsafe {(self.refer.address() as *const i64).as_ref()} {
+            *memory
+        } else {
+            0
+        }).unwrap_or_default()
+    }
+}
+impl Szun for Integer {
+    fn typeid() -> usize { Runtime::type_from(types::ANY, &[types::INTEGER]) }
+}
+impl SzunInternal for Integer {
+    fn to_ref(&self) -> Ref { self.refer }
+    fn from_ref(refer:Ref) -> Self { Self { refer } }
+}
+crate::impl_szun!(Integer);
diff --git a/src/implement/mod.rs b/src/implement/mod.rs
new file mode 100644
index 0000000..561a46a
--- /dev/null
+++ b/src/implement/mod.rs
@@ -0,0 +1,9 @@
+pub mod any; pub use any::Any;
+pub mod null; pub use null::Null;
+pub mod boolean; pub use boolean::Boolean;
+pub mod natural; pub use natural::Natural;
+pub mod integer; pub use integer::Integer;
+pub mod block; pub use block::Block;
+pub mod sequence; pub use sequence::Sequence;
+pub mod optional; pub use optional::Optional;
+pub mod array; pub use array::Array;
diff --git a/src/implement/natural.rs b/src/implement/natural.rs
new file mode 100644
index 0000000..c8cb662
--- /dev/null
+++ b/src/implement/natural.rs
@@ -0,0 +1,43 @@
+use crate::{prelude::{*, internal::*}, Runtime, Any, types};
+
+pub struct Natural {
+    refer:Ref,
+}
+impl Natural {
+    pub fn new() -> Self {
+        Self {
+            refer:Runtime::acquire(Self::typeid()),
+        }
+    }
+
+    pub fn with<T:num::ToPrimitive>(mut self, data:T) -> Self
+    {
+        self.set(data);
+        self
+    }
+
+    pub fn set<T:num::ToPrimitive>(&mut self, data:T)
+    {
+        let data = data.to_u64().unwrap_or_default();
+        if let Some(memory) = unsafe {(self.refer.address_mut() as *mut u64).as_mut()} {
+            *memory = data;
+        }
+    }
+
+    pub fn get<T:num::FromPrimitive + Default>(&self) -> T
+    {
+        T::from_u64(if let Some(memory) = unsafe {(self.refer.address() as *const u64).as_ref()} {
+            *memory
+        } else {
+            0
+        }).unwrap_or_default()
+    }
+}
+impl Szun for Natural {
+    fn typeid() -> usize { Runtime::type_from(types::ANY, &[types::NATURAL]) }
+}
+impl SzunInternal for Natural {
+    fn to_ref(&self) -> Ref { self.refer }
+    fn from_ref(refer:Ref) -> Self { Self { refer } }
+}
+crate::impl_szun!(Natural);
diff --git a/src/implement/null.rs b/src/implement/null.rs
new file mode 100644
index 0000000..4d4e57c
--- /dev/null
+++ b/src/implement/null.rs
@@ -0,0 +1,16 @@
+use crate::{prelude::{*, internal::*}, Runtime, Any, types};
+
+pub struct Null { }
+impl Null {
+    pub fn new() -> Self {
+        Self { }
+    }
+}
+impl Szun for Null {
+    fn typeid() -> usize { Runtime::type_from(types::ANY, &[types::BOOLEAN]) }
+}
+impl SzunInternal for Null {
+    fn to_ref(&self) -> Ref { Ref::null() }
+    fn from_ref(_:Ref) -> Self { Self { } }
+}
+crate::impl_szun!(Null);
diff --git a/src/implement/optional.rs b/src/implement/optional.rs
new file mode 100644
index 0000000..2ba868e
--- /dev/null
+++ b/src/implement/optional.rs
@@ -0,0 +1,120 @@
+use std::marker::PhantomData;
+use internal::SzunInternal;
+
+use crate::{prelude::*, Runtime, Any, types};
+
+pub struct Optional<T> where T:Szun {
+    refer:Ref,
+    phantom:PhantomData<T>,
+}
+impl<T:Szun> Optional<T> {
+    pub fn new() -> Self {
+        Self {
+            refer:Runtime::acquire(Self::typeid()),
+            phantom:PhantomData,
+        }
+    }
+
+    pub fn with(self, data:&T) -> Self
+    {
+        self.set(data);
+        self
+    }
+
+    pub fn with_default(self) -> (Self, T)
+    {
+        self.set_default();
+        let refer = self.refer;
+        (self, T::from_ref(refer.inner()))
+    }
+
+    pub fn set(&self, data:&T)
+    {
+        let inner_type = Runtime::type_in(self.refer.typeid());
+        let inner_size = types::size(inner_type);
+
+        let mut bytes = vec![0u8; types::size(inner_type)];
+
+        Runtime::load(data.to_ref(), bytes.as_ptr() as _, 0, inner_size);
+
+        Runtime::store(self.refer, bytes.as_ptr() as _, 0, inner_size);
+        Runtime::write(self.refer, 0xFF, inner_size);
+
+        if !types::primitive(data.to_ref().typeid()) {
+            bytes.fill(0);
+            Runtime::store(data.to_ref(), bytes.as_ptr() as _, 0, inner_size);
+        }
+    }
+
+    pub fn set_default(&self) -> T
+    {
+        let inner_type = Runtime::type_in(self.refer.typeid());
+        Runtime::write(self.refer, 0xFF, types::size(inner_type));
+
+        T::from_ref(self.refer.temporary())
+    }
+
+    pub fn unset(&self)
+    {
+        let inner_type = Runtime::type_in(self.refer.typeid());
+        let inner_size = types::size(inner_type);
+        let bytes = vec![0u8; types::size(inner_type)];
+
+        Runtime::store(self.refer, bytes.as_ptr() as _, 0, inner_size);
+        Runtime::write(self.refer, 0x00, inner_size);
+    }
+
+    pub fn get(&self) -> std::option::Option<T>
+    {
+        let inner_type = Runtime::type_in(self.refer.typeid());
+
+        let mut flag :u8 = 0;
+        Runtime::load(self.refer, &mut flag as _, types::size(inner_type), 1);
+        if flag != 0 {
+            let refer = self.refer;
+            Some(T::from_ref(refer.inner()))
+        } else {
+            None
+        }
+    }
+
+    pub fn is_some(&self) -> bool
+    {
+        let inner_type = Runtime::type_in(self.refer.typeid());
+
+        let mut flag :u8 = 0;
+        Runtime::load(self.refer, &mut flag as _, types::size(inner_type), 1);
+        flag != 0
+    }
+
+    pub fn is_none(&self) -> bool
+    {
+        !self.is_some()
+    }
+}
+impl<T:Szun> Szun for Optional<T> {
+    fn typeid() -> usize { Runtime::type_from(T::typeid(), &[types::OPTIONAL]) }
+}
+impl<T:Szun> SzunInternal for Optional<T> {
+    fn to_ref(&self) -> Ref { self.refer }
+    fn from_ref(refer:Ref) -> Self { Self { refer, phantom:PhantomData } }
+
+    fn mem_clone(refer:Ref, memory:std::prelude::v1::Option<Ref>) -> Ref {
+        // Allocate new memory if not provided
+        let memory = if let Some(memory) = memory {
+            memory
+        } else {
+            Runtime::acquire(refer.typeid())
+        };
+
+        // Copy memory
+        clone(refer.inner(), Some(memory.inner()));
+
+        memory
+    }
+
+    fn mem_drop(refer:Ref) {
+        drop(refer.inner())
+    }
+}
+crate::impl_szun_generic!(Optional<T>);
diff --git a/src/implement/sequence.rs b/src/implement/sequence.rs
new file mode 100644
index 0000000..98c2eb3
--- /dev/null
+++ b/src/implement/sequence.rs
@@ -0,0 +1,109 @@
+use internal::SzunInternal;
+
+use crate::{prelude::*, Runtime, Any, types};
+
+pub(crate) struct Data {
+    pub capacity:usize,
+    pub length:usize,
+    pub data:*const u8,
+}
+
+pub struct Sequence {
+    refer:Ref,
+}
+impl Sequence {
+    pub fn new() -> Self {
+        Self {
+            refer:Runtime::acquire(Self::typeid()),
+        }
+    }
+
+    pub fn with(mut self, data:&[u8]) -> Self
+    {
+        self.set(data);
+        self
+    }
+
+    pub fn with_str(mut self, data:&str) -> Self
+    {
+        self.set(data.as_bytes());
+        self
+    }
+
+    pub fn set(&mut self, data:&[u8])
+    {
+        if let Some(header) = unsafe {(self.refer.address_mut() as *mut Data).as_mut()} {
+            // Reallocate memory if capacity is insufficient
+            if header.capacity < data.len() {
+                // Free existing memory
+                if !header.data.is_null() {
+                    if let Ok(layout) = std::alloc::Layout::from_size_align(header.capacity, 1) {
+                        unsafe { std::alloc::dealloc(header.data as _, layout); }
+                    }
+                }
+                // Allocate sufficient memory
+                header.capacity = data.len();
+                if let Ok(layout) = std::alloc::Layout::from_size_align(header.capacity, 1) {
+                    header.data = unsafe {std::alloc::alloc(layout)};
+                } else {
+                    header.data = std::ptr::null();
+                    header.capacity = 0;
+                }
+            }
+
+            // Copy data to memory
+            if !header.data.is_null() {
+                header.length = data.len();
+                unsafe { std::ptr::copy_nonoverlapping(data.as_ptr() as _, header.data as _, data.len()); }
+            }
+        }
+    }
+
+    pub fn set_str(&mut self, data:&str)
+    {
+        self.set(data.as_bytes())
+    }
+
+    pub fn get(&self) -> Vec<u8>
+    {
+        if let Some(header) = unsafe {(self.refer.address_mut() as *mut Data).as_mut()} {
+            // Load data
+            let mut data = vec![0u8; header.length];
+            unsafe { std::ptr::copy_nonoverlapping(header.data as _, data.as_mut_ptr() as _, header.length); }
+            data
+        } else {
+            Vec::new()
+        }
+    }
+
+    pub fn get_str(&self) -> String
+    {
+        String::from_utf8(self.get()).unwrap_or_default()
+    }
+
+    pub fn len(&self) -> usize
+    {
+        if let Some(header) = unsafe {(self.refer.address_mut() as *mut Data).as_mut()} {
+            header.length
+        } else {
+            0
+        }
+    }
+
+    pub fn capacity(&self) -> usize
+    {
+        if let Some(header) = unsafe {(self.refer.address_mut() as *mut Data).as_mut()} {
+            header.capacity
+        } else {
+            0
+        }
+    }
+}
+impl Szun for Sequence {
+    fn typeid() -> usize { Runtime::type_from(types::ANY, &[types::SEQUENCE]) }
+}
+impl internal::SzunInternal for Sequence {
+    fn to_ref(&self) -> Ref { self.refer }
+    fn from_ref(refer:Ref) -> Self { Self { refer } }
+}
+crate::impl_szun!(Sequence);
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..5c4e32f
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,7 @@
+#![allow(dead_code)]
+
+mod util;
+pub mod prelude; pub use prelude::*;
+mod types;
+mod runtime; use runtime::Runtime;
+mod implement; pub use implement::*;
diff --git a/src/prelude/clone.rs b/src/prelude/clone.rs
new file mode 100644
index 0000000..59a7c59
--- /dev/null
+++ b/src/prelude/clone.rs
@@ -0,0 +1,15 @@
+use crate::Ref;
+
+pub fn clone(refer:Ref, memory:Option<Ref>) -> Ref
+// Deep copy an object and return the copy's reference.
+//
+{
+    use crate::{*, prelude::internal::*};
+    match Runtime::type_of(refer.typeid()) {
+        types::SEQUENCE => Sequence::mem_clone(refer, memory),
+        types::OPTIONAL => Optional::<Any>::mem_clone(refer, memory),
+        types::ARRAY => Array::<Any,0>::mem_clone(refer, memory),
+
+        _ => Any::mem_clone(refer, memory),
+    }
+}
diff --git a/src/prelude/drop.rs b/src/prelude/drop.rs
new file mode 100644
index 0000000..dbb890c
--- /dev/null
+++ b/src/prelude/drop.rs
@@ -0,0 +1,34 @@
+use crate::{prelude::{*, internal::*}, types::*, implement::*};
+
+pub fn drop(refer:Ref)
+{
+    if !refer.is_temporary() {
+        drop_memory(refer);
+        Runtime::release(refer);
+    }
+}
+
+fn drop_memory(refer:Ref)
+{
+    let typeid = refer.typeid();
+    match typeid {
+        OPTIONAL => {
+            let obj = crate::Optional::<Any>::from_ref(refer.temporary());
+            if obj.is_some() {
+                drop_memory(refer.inner());
+            }
+        }
+        
+        SEQUENCE => {
+            if let Some(header) = unsafe {(refer.address_mut() as *mut sequence::Data).as_mut()} {
+                if !header.data.is_null() {
+                    if let Ok(layout) = std::alloc::Layout::from_size_align(header.capacity, 1) {
+                        unsafe { std::alloc::dealloc(header.data as _, layout); }
+                    }
+                }
+            }
+        }
+
+        _ => { }
+    }
+}
diff --git a/src/prelude/encode.rs b/src/prelude/encode.rs
new file mode 100644
index 0000000..a5bbeb6
--- /dev/null
+++ b/src/prelude/encode.rs
@@ -0,0 +1,70 @@
+use crate::{*, prelude::{*, internal::*}, types::*};
+
+pub fn encode(refer:Ref) -> Vec<u8>
+{
+    let refer = refer.temporary();
+    let mut result = Vec::new();
+
+    let typeid = Runtime::type_of(refer.typeid());
+    match typeid {
+        BOOLEAN => {
+            // <Data:1>
+            //
+            let data = Boolean::from_ref(refer);
+            result.push(data.get() as u8);
+        }
+
+        NATURAL => {
+            // <Data:Uint>
+            //
+            let data = Natural::from_ref(refer);
+            result.append(&mut data.get::<u64>().pack());
+        }
+
+        INTEGER => {
+            // <Data:Int>
+            //
+            let _data = Integer::from_ref(refer);
+            //result.append(&mut data.get::<i64>().pack());
+        }
+
+        BLOCK => {
+            // <Data:N>
+            //
+            let data = Block::<0>::from_ref(refer);
+            result.append(&mut data.get());
+        }
+
+        SEQUENCE => {
+            // <Length:Uint> <Data:Length>
+            //
+            let data = Sequence::from_ref(refer);
+            result.append(&mut (data.len() as u64).pack());
+            result.append(&mut data.get());
+        }
+
+        OPTIONAL => {
+            // <IsSome:1> <Data:N>?
+            //
+            let data = Optional::<Any>::from_ref(refer);
+            let is_some = data.is_some();
+            result.push(is_some as u8);
+            if let Some(value) = data.get() {
+                result.append(&mut encode(value.to_ref()));
+            }
+        }
+        
+        _ => { }
+    }
+    
+    result
+}
+
+pub fn decode(refer:Ref, _data:&[u8], _index:&mut usize) -> Result<(),()>
+{
+    let typeid = Runtime::type_of(refer.typeid());
+    match typeid {
+        _ => { }
+    }
+    Err(())
+}
diff --git a/src/prelude/implement.rs b/src/prelude/implement.rs
new file mode 100644
index 0000000..4f0efe4
--- /dev/null
+++ b/src/prelude/implement.rs
@@ -0,0 +1,13 @@
+use crate::prelude::{*, internal::*};
+
+pub(crate) fn to_any<T:Szun>(data:T) -> Any
+{
+    Any::from_ref(data.to_ref())
+}
+
+pub(crate) fn from_any<T:Szun>(any:Any) -> Result<T,()>
+{
+    if any.typeid() == T::typeid()
+    || (Runtime::type_of(any.typeid()) == Runtime::type_of(T::typeid()) && Runtime::type_in(T::typeid()) == 0)
+    { Ok(T::from_ref(any.refer)) } else { Err(()) }
+}
diff --git a/src/prelude/internal/mod.rs b/src/prelude/internal/mod.rs
new file mode 100644
index 0000000..8e1b651
--- /dev/null
+++ b/src/prelude/internal/mod.rs
@@ -0,0 +1,25 @@
+use crate::{Ref, Runtime, types};
+
+#[allow(drop_bounds)]
+pub(crate) trait SzunInternal {
+    fn to_ref(&self) -> Ref;
+    fn from_ref(refer:Ref) -> Self;
+
+    fn mem_clone(refer:Ref, memory:Option<Ref>) -> Ref {
+        let typeid = refer.typeid();
+
+        // Acquire memory if not provided
+        let memory = if let Some(memory) = memory {
+            memory
+        } else {
+            Runtime::acquire(typeid)
+        };
+
+        // Copy data to destination
+        Runtime::copy(refer.address(), memory.address_mut(), types::size(typeid));
+
+        memory
+    }
+    
+    fn mem_drop(_refer:Ref) { /* Do nothing */ }
+}
diff --git a/src/prelude/mod.rs b/src/prelude/mod.rs
new file mode 100644
index 0000000..b4da354
--- /dev/null
+++ b/src/prelude/mod.rs
@@ -0,0 +1,38 @@
+use crate::{Runtime, Any};
+use pack::prelude::*;
+
+pub mod internal;
+
+mod refer; pub(crate) use refer::Ref;
+mod encode; pub(crate) use encode::*;
+
+#[allow(drop_bounds, private_bounds)]
+pub trait Szun : internal::SzunInternal + Clone + TryFrom<Any> + Into<Any> + Drop {
+    fn typeid() -> usize;
+
+    fn compatible<T:Szun>(&self, data:&T) -> bool
+    {
+        let data_type = data.to_ref().typeid();
+        let self_type = self.to_ref().typeid();
+        data_type == Runtime::type_in(self_type)
+        || Runtime::type_in(self_type) == 0
+    }
+
+    fn encode(&self) -> Vec<u8> { encode(self.to_ref()) }
+    fn decode(&mut self, bytes:&Vec<u8>, index:&mut usize) -> Result<(),()> { decode(self.to_ref(), bytes, index) }
+
+    fn tag(&self) -> Vec<u8>
+    {
+        let mut result = Vec::new();
+        let mut next = Some(Self::typeid());
+        while let Some(next_id) = next {
+            result.append(&mut 0u32.pack());
+            next = Runtime::type_in_opt(next_id);
+        }
+        result
+    }
+}
+
+mod implement; pub(crate) use implement::*;
+mod clone; pub(crate) use clone::*;
+mod drop; pub(crate) use drop::*;
diff --git a/src/prelude/refer.rs b/src/prelude/refer.rs
new file mode 100644
index 0000000..5fa0b85
--- /dev/null
+++ b/src/prelude/refer.rs
@@ -0,0 +1,58 @@
+use crate::Runtime;
+
+#[derive(Clone, Copy)]
+pub struct Ref {
+    typeid:usize,
+    address:*const u8,
+}
+impl Ref {
+    pub(crate) fn new(typeid:usize, address:*const u8) -> Self
+    {
+        Self {
+            typeid,
+            address,
+        }
+    }
+
+    pub fn null() -> Self
+    {
+        Self {
+            typeid:0,
+            address:std::ptr::null(),
+        }
+    }
+
+    pub fn inner(&self) -> Self
+    {
+        let mut refer = *self;
+        refer.typeid = Runtime::type_in(self.typeid);
+        self.temporary()
+    }
+
+    pub fn temporary(&self) -> Self
+    {
+        let mut refer = *self;
+        refer.typeid |= 1 << (usize::BITS - 1);
+        refer
+    }
+
+    pub fn is_temporary(&self) -> bool
+    {
+        (self.typeid & (1 << (usize::BITS - 1))) != 0
+    }
+
+    pub fn typeid(&self) -> usize
+    {
+        self.typeid & !(1 << (usize::BITS - 1))
+    }
+
+    pub fn address(&self) -> *const u8
+    {
+        self.address
+    }
+
+    pub fn address_mut(&self) -> *mut u8
+    {
+        self.address as _
+    }
+}
diff --git a/src/runtime/mod.rs b/src/runtime/mod.rs
new file mode 100644
index 0000000..a8b9239
--- /dev/null
+++ b/src/runtime/mod.rs
@@ -0,0 +1,118 @@
+use crate::{prelude::*, types};
+
+mod typetree; use typetree::TypeTree;
+
+struct RuntimeData {
+    terms:Vec<u8>,
+    types:TypeTree,
+}
+impl RuntimeData {
+    const fn init() -> Self
+    {
+        Self {
+            terms:Vec::new(),
+            types:TypeTree::new(),
+        }
+    }
+
+    fn acquire(&mut self, typeid:usize) -> Ref
+    {
+        use std::alloc::{alloc_zeroed, Layout};
+
+        let size = types::size(typeid);
+        if size > 0 {
+            if let Ok(layout) = Layout::from_size_align(size, types::align(typeid)) {
+                let address :*const u8;
+                unsafe {
+                    address = alloc_zeroed(layout) as _;
+                }
+                Ref::new(typeid, address)
+            } else {
+                Ref::null()
+            }
+        } else {
+            Ref::null()
+        }
+    }
+
+    fn release(&mut self, refer:Ref)
+    {
+        use std::alloc::{dealloc, Layout};
+
+        let typeid = refer.typeid();
+        let size = types::size(typeid);
+        if size > 0 {
+            if let Ok(layout) = Layout::from_size_align(size, types::align(typeid)) {
+                unsafe {
+                    dealloc(refer.address_mut(), layout);
+                }
+            }
+        }
+    }
+
+    fn store(&mut self, refer:Ref, data:*const u8, index:usize, len:usize)
+    {
+        unsafe {
+            std::ptr::copy_nonoverlapping(data, refer.address_mut().add(index), len);
+        }
+    }
+
+    fn load(&mut self, refer:Ref, data:*mut u8, index:usize, len:usize)
+    {
+        unsafe {
+            std::ptr::copy_nonoverlapping(refer.address().add(index), data, len);
+        }
+    }
+
+    fn copy(&mut self, src:*const u8, dst:*mut u8, len:usize)
+    {
+        unsafe {
+            std::ptr::copy_nonoverlapping(src, dst, len);
+        }
+    }
+
+    fn write(&mut self, refer:Ref, data:u8, index:usize)
+    {
+        unsafe { *refer.address_mut().byte_add(index) = data; }
+    }
+
+    fn zero(&mut self, refer:Ref)
+    {
+        let size = types::size(refer.typeid());
+        for i in 0..size {
+            unsafe { *refer.address_mut().byte_add(i) = 0; }
+        }
+    }
+
+    fn type_from(&mut self, parent:usize, types:&[usize]) -> usize
+    {
+        self.types.outer(parent, types)
+    }
+
+    fn type_in(&mut self, typeid:usize) -> Option<usize>
+    {
+        self.types.inner(typeid)
+    }
+
+    fn type_of(&mut self, typeid:usize) -> usize
+    {
+        self.types.value(typeid)
+    }
+}
+static mut RUNTIME :RuntimeData = RuntimeData::init();
+
+pub struct Runtime { }
+impl Runtime {
+    pub fn acquire(typeid:usize) -> Ref {unsafe{ RUNTIME.acquire(typeid) }}
+    pub fn release(refer:Ref) {unsafe{ RUNTIME.release(refer) }}
+    pub fn store(refer:Ref, data:*const u8, index:usize, len:usize) {unsafe{ RUNTIME.store(refer, data, index, len) }}
+    pub fn load(refer:Ref, data:*mut u8, index:usize, len:usize) {unsafe{ RUNTIME.load(refer, data, index, len) }}
+    pub fn copy(src:*const u8, dst:*mut u8, len:usize) {unsafe{ RUNTIME.copy(src, dst, len) }}
+    pub fn write(refer:Ref, data:u8, index:usize) {unsafe { RUNTIME.write(refer, data, index) }}
+    pub fn zero(refer:Ref) {unsafe { RUNTIME.zero(refer) }}
+
+    pub fn type_of(typeid:usize) -> usize {unsafe{ RUNTIME.type_of(typeid) }}
+    pub fn type_in(typeid:usize) -> usize {unsafe{ RUNTIME.type_in(typeid).unwrap_or_default() }}
+    pub fn type_in_opt(typeid:usize) -> Option<usize> {unsafe{ RUNTIME.type_in(typeid) }}
+    pub fn type_from(typeid:usize, types:&[usize]) -> usize {unsafe{ RUNTIME.type_from(typeid, types) }}
+}
diff --git a/src/runtime/typetree.rs b/src/runtime/typetree.rs
new file mode 100644
index 0000000..29f55e5
--- /dev/null
+++ b/src/runtime/typetree.rs
@@ -0,0 +1,104 @@
+struct Node {
+    typeid:usize,
+    parent:Option<usize>,
+    child:Option<usize>,
+    next:Option<usize>,
+}
+
+pub struct TypeTree {
+    data:Vec<Node>,
+}
+impl TypeTree {
+    pub const fn new() -> Self
+    {
+        Self {
+            data:Vec::new(),
+        }
+    }
+
+    pub fn value(&self, id:usize) -> usize
+    {
+        if id < self.data.len() {
+            self.data[id].typeid
+        } else {
+            0
+        }
+    }
+
+    pub fn inner(&self, id:usize) -> Option<usize>
+    {
+        if id < self.data.len() {
+            self.data[id].parent
+        } else {
+            None
+        }
+    }
+
+    pub fn outer(&mut self, typeid:usize, types:&[usize]) -> usize
+    {
+        let mut itr = typeid;
+        let mut type_index = 0;
+
+        if self.data.len() == 0 {
+            self.data.push(Node {
+                typeid:0,
+                parent:None,
+                child:None,
+                next:None,
+            });
+        }
+
+        if typeid != 0 {
+            if let Some(child) = self.data[itr].child {
+                itr = child;
+            } else {
+                let node = Node {
+                    typeid:types[type_index],
+                    parent:Some(itr),
+                    child:None,
+                    next:None,
+                };
+                itr = self.data.len();
+                self.data.push(node);
+            }
+        }
+
+        while type_index < types.len() {
+            if self.data[itr].typeid == types[type_index] {
+                if type_index + 1 < types.len() {
+                    if let Some(child) = self.data[itr].child {
+                        itr = child;
+                    } else {
+                        let node = Node {
+                            typeid:types[type_index],
+                            parent:Some(itr),
+                            child:None,
+                            next:None,
+                        };
+                        itr = self.data.len();
+                        self.data.push(node);
+                    }
+                    type_index += 1;
+                } else {
+                    break;
+                }
+            } else {
+                if let Some(next) = self.data[itr].next {
+                    itr = next;
+                } else {
+                    let node = Node {
+                        typeid:types[type_index],
+                        parent:self.data[itr].parent,
+                        child:None,
+                        next:None,
+                    };
+                    self.data[itr].next = Some(self.data.len());
+                    itr = self.data.len();
+                    self.data.push(node);
+                }
+            }
+        }
+
+        itr
+    }
+}
diff --git a/src/types.rs b/src/types.rs
new file mode 100644
index 0000000..b284046
--- /dev/null
+++ b/src/types.rs
@@ -0,0 +1,140 @@
+use crate::Runtime;
+
+/*
+** Type Codes
+*/
+pub const ANY         :usize = 0x00;
+pub const BOOLEAN     :usize = 0x01;
+pub const BYTE        :usize = 0x02;
+pub const CHAR        :usize = 0x03;
+pub const NATURAL     :usize = 0x10;
+pub const INTEGER     :usize = 0x11;
+pub const DECIMAL     :usize = 0x12;
+pub const SIGNIFICANT :usize = 0x13;
+pub const BLOCK       :usize = 0x20;
+pub const SEQUENCE    :usize = 0x21;
+pub const VAR         :usize = 0x30;
+pub const OPTIONAL    :usize = 0x31;
+pub const ARRAY       :usize = 0x32;
+pub const LIST        :usize = 0x33;
+pub const GRAPH       :usize = 0x34;
+pub const TRIE        :usize = 0x35;
+pub const MAP         :usize = 0x40;
+pub const SPARSE      :usize = 0x41;
+pub const POOL        :usize = 0x42;
+pub const TABLE       :usize = 0x43;
+pub const ENUM        :usize = 0x7D;
+pub const RECORD      :usize = 0x7E;
+pub const SCHEMA      :usize = 0x7F;
+
+pub fn size(typeid:usize) -> usize
+// Byte size of static data in memory.
+//
+{
+    use std::mem::size_of;
+
+    match Runtime::type_of(typeid) {
+        ANY => 0,
+        BOOLEAN => size_of::<bool>(),
+        BYTE => size_of::<u8>(),
+        CHAR => size_of::<char>(),
+        NATURAL => size_of::<u64>(),
+        INTEGER => size_of::<i64>(),
+        DECIMAL => size_of::<i64>(),
+        SIGNIFICANT => size_of::<f64>(),
+        BLOCK => Runtime::type_of(Runtime::type_in(typeid)),
+        SEQUENCE => size_of::<crate::implement::sequence::Data>(),
+        VAR => 16,
+        OPTIONAL => size(Runtime::type_in(typeid)) + 1,
+        ARRAY => {
+            let inner_size = Runtime::type_in(typeid);
+            let inner_type = Runtime::type_in(inner_size);
+            Runtime::type_of(inner_size) * size(Runtime::type_of(inner_type))
+        },
+        LIST => 16,
+        GRAPH => 0,
+        TRIE => 0,
+        MAP => 0,
+        SPARSE => 0,
+        POOL => 0,
+        TABLE => 0,
+        ENUM => 0,
+        RECORD => 0,
+        SCHEMA => 0,
+        _ => 0,
+    }
+}
+
+pub fn align(typeid:usize) -> usize
+// Byte alignment of type.
+//
+{
+    use std::mem::align_of;
+
+    match Runtime::type_of(typeid) {
+        ANY => 0,
+        BOOLEAN => align_of::<bool>(),
+        BYTE => align_of::<u8>(),
+        CHAR => align_of::<char>(),
+        NATURAL => align_of::<u64>(),
+        INTEGER => align_of::<i64>(),
+        DECIMAL => align_of::<i64>(),
+        SIGNIFICANT => align_of::<f64>(),
+        BLOCK => align_of::<u8>(),
+        SEQUENCE => align_of::<crate::implement::sequence::Data>(),
+        VAR => 8,
+        OPTIONAL => align(Runtime::type_in(typeid)),
+        ARRAY => {
+            let inner_size = Runtime::type_in(typeid);
+            let inner_type = Runtime::type_in(inner_size);
+            align(Runtime::type_of(inner_type))
+        },
+        LIST => 8,
+        GRAPH => 0,
+        TRIE => 0,
+        MAP => 0,
+        SPARSE => 0,
+        POOL => 0,
+        TABLE => 0,
+        ENUM => 0,
+        RECORD => 0,
+        SCHEMA => 0,
+        _ => 0,
+    }
+}
+
+pub fn primitive(typeid:usize) -> bool
+// Whether type may be shallow copied.
+//
+{
+    match Runtime::type_of(typeid) {
+        ANY | BOOLEAN
+        | BYTE | CHAR
+        | NATURAL | INTEGER | DECIMAL | SIGNIFICANT
+        | BLOCK
+        => true,
+        _ => false,
+    }
+}
+
+pub fn tag_stack(typeid:usize) -> usize
+// Number of dependent tags following root.
+//
+{
+    match Runtime::type_of(typeid) {
+        ANY => 1,
+        BLOCK => 1,
+        OPTIONAL => 1,
+        ARRAY => 2,
+        LIST => 1,
+        GRAPH => 1,
+        TRIE => 1,
+        MAP => 1,
+        SPARSE => 1,
+        POOL => 1,
+        TABLE => 2,
+        RECORD => 1,
+
+        _ => 0,
+    }
+}
diff --git a/src/util/macros.rs b/src/util/macros.rs
new file mode 100644
index 0000000..f55e91a
--- /dev/null
+++ b/src/util/macros.rs
@@ -0,0 +1,39 @@
+#[macro_export]
+macro_rules! impl_szun {
+    ($type_name:ty) => {
+        impl Into<Any> for $type_name { fn into(self) -> Any { to_any(self) } }
+        impl TryFrom<Any> for $type_name { type Error = (); fn try_from(any: Any) -> Result<Self, Self::Error> { from_any(any) } }
+        impl Clone for $type_name { fn clone(&self) -> Self { Self::from_ref(clone(self.to_ref(), None)) } }
+        impl Drop for $type_name { fn drop(&mut self) { drop(self.to_ref()); } }
+    }
+}
+
+#[macro_export]
+macro_rules! impl_szun_generic {
+    ($type_name:ty) => {
+        impl<T:Szun> Into<Any> for $type_name { fn into(self) -> Any { to_any(self) } }
+        impl<T:Szun> TryFrom<Any> for $type_name { type Error = (); fn try_from(any: Any) -> Result<Self, Self::Error> { from_any(any) } }
+        impl<T:Szun> Clone for $type_name { fn clone(&self) -> Self { Self::from_ref(clone(self.to_ref(), None)) } }
+        impl<T:Szun> Drop for $type_name { fn drop(&mut self) { drop(self.to_ref()); } }
+    }
+}
+
+#[macro_export]
+macro_rules! impl_szun_sized {
+    ($type_name:ty) => {
+        impl<const N:usize> Into<Any> for $type_name { fn into(self) -> Any { to_any(self) } }
+        impl<const N:usize> TryFrom<Any> for $type_name { type Error = (); fn try_from(any: Any) -> Result<Self, Self::Error> { from_any(any) } }
+        impl<const N:usize> Clone for $type_name { fn clone(&self) -> Self { Self::from_ref(clone(self.to_ref(), None)) } }
+        impl<const N:usize> Drop for $type_name { fn drop(&mut self) { drop(self.to_ref()); } }
+    }
+}
+
+#[macro_export]
+macro_rules! impl_szun_generic_sized {
+    ($type_name:ty) => {
+        impl<T:Szun, const N:usize> Into<Any> for $type_name { fn into(self) -> Any { to_any(self) } }
+        impl<T:Szun, const N:usize> TryFrom<Any> for $type_name { type Error = (); fn try_from(any: Any) -> Result<Self, Self::Error> { from_any(any) } }
+        impl<T:Szun, const N:usize> Clone for $type_name { fn clone(&self) -> Self { Self::from_ref(clone(self.to_ref(), None)) } }
+        impl<T:Szun, const N:usize> Drop for $type_name { fn drop(&mut self) { drop(self.to_ref()); } }
+    }
+}
diff --git a/src/util/mod.rs b/src/util/mod.rs
new file mode 100644
index 0000000..eda363d
--- /dev/null
+++ b/src/util/mod.rs
@@ -0,0 +1 @@
+pub mod macros;