feat: daletpack encode

libs/rust/.gitignore

@@ -1 +1,2 @@
 /target
+test.daletpack

libs/rust/Cargo.toml

@@ -18,5 +18,6 @@ serde = { version = "1.0", features = ["derive"] }
 serde_repr = "0.1"
 
 [features]
-default = ["types"]
+default = ["types", "daletpack"]
 types = []
+daletpack = ["types"]

libs/rust/src/abstractions.rs

@@ -2,8 +2,8 @@ use num_enum::TryFromPrimitive;
 
 use crate::daletl::{self, t_new, Tid};
 
-const BN: daletl::Body = daletl::Body::Null;
-const AN: daletl::Argument = daletl::Argument::Null;
+const NB: daletl::Body = daletl::Body::Null;
+const NA: daletl::Argument = daletl::Argument::Null;
 
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub enum Tag {
@@ -37,6 +37,10 @@ pub enum Tag {
     Carousel(Vec<Tag>),
 }
 
+pub trait ToDaletl {
+    fn to_daletl(self) -> Vec<daletl::Tag>;
+}
+
 pub trait ToDaletlTag {
     fn to_daletl_tag(self) -> daletl::Tag;
 }
@@ -44,34 +48,34 @@ pub trait ToDaletlTag {
 impl ToDaletlTag for Tag {
     fn to_daletl_tag(self) -> daletl::Tag {
         match self {
-            Tag::El(b) => t_new(Tid::El, b.to_daletl_body(), AN),
+            Tag::El(b) => t_new(Tid::El, b.to_daletl_body(), NA),
             Tag::H(b, a) => t_new(Tid::H, b.to_daletl_body(), a.to_daletl_argument()),
-            Tag::P(b) => t_new(Tid::P, b.to_daletl_body(), AN),
-            Tag::Br => t_new(Tid::Br, BN, AN),
-            Tag::Ul(b) => t_new(Tid::Ul, b.to_daletl_body(), AN),
-            Tag::Ol(b) => t_new(Tid::Ol, b.to_daletl_body(), AN),
+            Tag::P(b) => t_new(Tid::P, b.to_daletl_body(), NA),
+            Tag::Br => t_new(Tid::Br, NB, NA),
+            Tag::Ul(b) => t_new(Tid::Ul, b.to_daletl_body(), NA),
+            Tag::Ol(b) => t_new(Tid::Ol, b.to_daletl_body(), NA),
             Tag::Row(b, a) => t_new(Tid::Row, b.to_daletl_body(), a.to_daletl_argument()),
             Tag::Link(b, a) => t_new(Tid::Link, b.to_daletl_body(), a.to_daletl_argument()),
             Tag::Navlink(b, a) => t_new(Tid::Navlink, b.to_daletl_body(), a.to_daletl_argument()),
             Tag::Btn(b, a) => t_new(Tid::Btn, b.to_daletl_body(), a.to_daletl_argument()),
             Tag::Navbtn(b, a) => t_new(Tid::Navbtn, b.to_daletl_body(), a.to_daletl_argument()),
-            Tag::Img(a) => t_new(Tid::Img, BN, a.to_daletl_argument()),
-            Tag::Table(b) => t_new(Tid::Table, b.to_daletl_body(), AN),
-            Tag::Tcol(b) => t_new(Tid::Tcol, b.to_daletl_body(), AN),
-            Tag::Tpcol(b) => t_new(Tid::Tpcol, b.to_daletl_body(), AN),
-            Tag::Hr => t_new(Tid::Hr, BN, AN),
-            Tag::B(b) => t_new(Tid::B, b.to_daletl_body(), AN),
-            Tag::I(b) => t_new(Tid::I, b.to_daletl_body(), AN),
-            Tag::Bq(b) => t_new(Tid::Bq, b.to_daletl_body(), AN),
-            Tag::Footlnk(a) => t_new(Tid::Footlnk, BN, a.to_daletl_argument()),
+            Tag::Img(a) => t_new(Tid::Img, NB, a.to_daletl_argument()),
+            Tag::Table(b) => t_new(Tid::Table, b.to_daletl_body(), NA),
+            Tag::Tcol(b) => t_new(Tid::Tcol, b.to_daletl_body(), NA),
+            Tag::Tpcol(b) => t_new(Tid::Tpcol, b.to_daletl_body(), NA),
+            Tag::Hr => t_new(Tid::Hr, NB, NA),
+            Tag::B(b) => t_new(Tid::B, b.to_daletl_body(), NA),
+            Tag::I(b) => t_new(Tid::I, b.to_daletl_body(), NA),
+            Tag::Bq(b) => t_new(Tid::Bq, b.to_daletl_body(), NA),
+            Tag::Footlnk(a) => t_new(Tid::Footlnk, NB, a.to_daletl_argument()),
             Tag::Footn(b, a) => t_new(Tid::Footn, b.to_daletl_body(), a.to_daletl_argument()),
-            Tag::A(a) => t_new(Tid::A, BN, a.to_daletl_argument()),
-            Tag::S(b) => t_new(Tid::S, b.to_daletl_body(), AN),
-            Tag::Sup(b) => t_new(Tid::Sup, b.to_daletl_body(), AN),
-            Tag::Sub(b) => t_new(Tid::Sub, b.to_daletl_body(), AN),
-            Tag::Disc(b) => t_new(Tid::Disc, b.to_daletl_body(), AN),
+            Tag::A(a) => t_new(Tid::A, NB, a.to_daletl_argument()),
+            Tag::S(b) => t_new(Tid::S, b.to_daletl_body(), NA),
+            Tag::Sup(b) => t_new(Tid::Sup, b.to_daletl_body(), NA),
+            Tag::Sub(b) => t_new(Tid::Sub, b.to_daletl_body(), NA),
+            Tag::Disc(b) => t_new(Tid::Disc, b.to_daletl_body(), NA),
             Tag::Bl(b, a) => t_new(Tid::Bl, b.to_daletl_body(), a.to_daletl_argument()),
-            Tag::Carousel(b) => t_new(Tid::Disc, b.to_daletl_body(), AN),
+            Tag::Carousel(b) => t_new(Tid::Carousel, b.to_daletl_body(), NA),
         }
     }
 }
@@ -102,7 +106,7 @@ pub enum HeadingLevel {
 impl ToDaletlArgument for HeadingLevel {
     fn to_daletl_argument(self) -> daletl::Argument {
         match self {
-            HeadingLevel::One => 1u8.to_daletl_argument(),
+            HeadingLevel::One => NA,
             HeadingLevel::Two => 2u8.to_daletl_argument(),
             HeadingLevel::Three => 3u8.to_daletl_argument(),
             HeadingLevel::Four => 4u8.to_daletl_argument(),
@@ -127,7 +131,7 @@ pub enum AlignArgument {
 impl ToDaletlArgument for AlignArgument {
     fn to_daletl_argument(self) -> daletl::Argument {
         match self {
-            Self::Start => 0u8.to_daletl_argument(),
+            Self::Start => NA,
             Self::Center => 1u8.to_daletl_argument(),
             Self::End => 2u8.to_daletl_argument(),
         }
@@ -159,7 +163,7 @@ pub enum Body {
 impl ToDaletlBody for Body {
     fn to_daletl_body(self) -> daletl::Body {
         match self {
-            Body::Null => daletl::Body::Null,
+            Body::Null => NB,
             Body::Tags(v) => v.to_daletl_body(),
             Body::Text(v) => v.to_daletl_body(),
         }
@@ -176,7 +180,7 @@ pub enum Argument {
 impl ToDaletlArgument for Argument {
     fn to_daletl_argument(self) -> daletl::Argument {
         match self {
-            Argument::Null => daletl::Argument::Null,
+            Argument::Null => NA,
             Argument::Number(v) => v.to_daletl_argument(),
             Argument::Text(v) => v.to_daletl_argument(),
         }
@@ -215,7 +219,13 @@ impl ToDaletlBody for NotNullBody {
 
 impl ToDaletlBody for Vec<Tag> {
     fn to_daletl_body(self) -> daletl::Body {
-        daletl::Body::Tags(self.into_iter().map(|tag| tag.to_daletl_tag()).collect())
+        daletl::Body::Tags(self.to_daletl())
+    }
+}
+
+impl ToDaletl for Vec<Tag> {
+    fn to_daletl(self) -> Vec<daletl::Tag> {
+        self.into_iter().map(|tag| tag.to_daletl_tag()).collect()
     }
 }
 

libs/rust/src/daletl.rs

@@ -5,9 +5,9 @@ use num_enum::TryFromPrimitive;
 
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq)]
 pub struct Tag {
-    id: Tid,
-    body: Body,
-    argument: Argument,
+    pub id: Tid,
+    pub body: Body,
+    pub argument: Argument,
 }
 
 impl Tag {
@@ -21,6 +21,10 @@ pub fn t_new(id: Tid, body: Body, argument: Argument) -> Tag {
     Tag::new(id, body, argument)
 }
 
+pub trait IsNull {
+    fn is_null(&self) -> bool;
+}
+
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq)]
 #[serde(untagged)]
 pub enum Body {
@@ -29,6 +33,15 @@ pub enum Body {
     Null,
 }
 
+impl IsNull for Body {
+    fn is_null(&self) -> bool {
+        match self {
+            Self::Null => true,
+            _ => false,
+        }
+    }
+}
+
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq)]
 #[serde(untagged)]
 pub enum Argument {
@@ -37,6 +50,15 @@ pub enum Argument {
     Null,
 }
 
+impl IsNull for Argument {
+    fn is_null(&self) -> bool {
+        match self {
+            Self::Null => true,
+            _ => false,
+        }
+    }
+}
+
 #[derive(Serialize_repr, Deserialize_repr, Debug, Clone, PartialEq, Eq, TryFromPrimitive)]
 #[repr(u8)]
 /// Tag Id

libs/rust/src/daletpack/encode.rs

@@ -0,0 +1,127 @@
+use bitvec::{
+    bits,
+    order::Msb0,
+    prelude::{BitVec, Lsb0},
+    view::{AsBits, BitView},
+};
+
+use crate::daletl::{Argument, Body, IsNull, Tag};
+
+use super::utils::*;
+use super::DaletPackError;
+
+pub fn encode(root: Vec<Tag>) -> Result<Vec<u8>, DaletPackError> {
+    if root.len() > 2usize.pow(32) {
+        return Err(DaletPackError::RootMaxSizeExceeded);
+    }
+
+    let mut bv: BitVec<u8, Msb0> = BitVec::new();
+
+    for tag in root {
+        write_tag(&mut bv, tag)?;
+    }
+
+    bv.set_uninitialized(false);
+    Ok(bv.into_vec())
+}
+
+fn write_int(bv: &mut BitVec<u8, Msb0>, n: u8) {
+    if n < 16 {
+        write_4bit(bv, 0);
+        write_4bit(bv, n);
+    } else {
+        write_4bit(bv, 1);
+        bv.extend_from_raw_slice(&[n]);
+    }
+}
+
+fn write_str(bv: &mut BitVec<u8, Msb0>, string: String) -> Result<(), DaletPackError> {
+    let size = string.len();
+
+    if size > 2usize.pow(32) {
+        return Err(DaletPackError::StrMaxSizeExceeded);
+    }
+
+    if size <= 8 {
+        write_4bit(bv, 2);
+        write_3bit(bv, (size - 1) as u8);
+    } else if size <= 16 {
+        write_4bit(bv, 3);
+        write_4bit(bv, (size - 1) as u8);
+    } else if size <= 256 {
+        write_4bit(bv, 4);
+        bv.extend_from_raw_slice(&[(size - 1) as u8]);
+    } else if size <= 65536 {
+        write_4bit(bv, 5);
+        bv.extend_from_bitslice(&((size - 1) as u16).view_bits::<Msb0>());
+    } else {
+        write_4bit(bv, 6);
+        bv.extend_from_bitslice(&((size - 1) as u32).view_bits::<Msb0>());
+    }
+
+    bv.extend_from_bitslice(&string.as_bits::<Msb0>());
+
+    Ok(())
+}
+
+fn write_array(bv: &mut BitVec<u8, Msb0>, arr: Vec<Tag>) -> Result<(), DaletPackError> {
+    if arr.len() > 2usize.pow(32) {
+        return Err(DaletPackError::ArrMaxSizeExceeded);
+    }
+
+    write_4bit(bv, 7);
+
+    for tag in arr {
+        write_tag(bv, tag)?;
+    }
+
+    bv.extend_from_bitslice(&bits![1, 0]);
+
+    Ok(())
+}
+
+fn write_tag(bv: &mut BitVec<u8, Msb0>, tag: Tag) -> Result<(), DaletPackError> {
+    if tag.body.is_null() && tag.argument.is_null() {
+        write_4bit(bv, 15);
+        write_tag_id(bv, tag.id as u8);
+    } else if tag.argument.is_null() {
+        write_4bit(bv, 13);
+        write_tag_id(bv, tag.id as u8);
+        write_tag_body(bv, tag.body)?;
+    } else if tag.body.is_null() {
+        write_4bit(bv, 14);
+        write_tag_id(bv, tag.id as u8);
+        write_tag_argument(bv, tag.argument)?;
+    } else {
+        write_4bit(bv, 15);
+        write_tag_id(bv, tag.id as u8);
+        write_tag_body(bv, tag.body)?;
+        write_tag_argument(bv, tag.argument)?;
+    }
+
+    Ok(())
+}
+
+fn write_tag_id(bv: &mut BitVec<u8, Msb0>, n: u8) {
+    bv.extend_from_bitslice(&n.view_bits::<Msb0>()[3..=7]);
+}
+
+fn write_tag_body(bv: &mut BitVec<u8, Msb0>, body: Body) -> Result<(), DaletPackError> {
+    match body {
+        Body::Text(s) => write_str(bv, s)?,
+        Body::Tags(tags) => write_array(bv, tags)?,
+        Body::Null => unreachable!("This function cannot be called with this value"),
+    };
+
+    Ok(())
+}
+
+fn write_tag_argument(bv: &mut BitVec<u8, Msb0>, argument: Argument) -> Result<(), DaletPackError> {
+    match argument {
+        Argument::Text(s) => write_str(bv, s)?,
+        Argument::Number(n) => write_int(bv, n),
+        Argument::Null => unreachable!("This function cannot be called with this value"),
+    };
+
+    Ok(())
+}

libs/rust/src/daletpack/mod.rs

@@ -0,0 +1,6 @@
+mod encode;
+mod types;
+
+pub mod utils;
+pub use encode::encode;
+pub use types::*;

libs/rust/src/daletpack/types.rs

@@ -0,0 +1,6 @@
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum DaletPackError {
+    StrMaxSizeExceeded,
+    ArrMaxSizeExceeded,
+    RootMaxSizeExceeded,
+}

libs/rust/src/daletpack/utils.rs

@@ -0,0 +1,9 @@
+use bitvec::{order::Msb0, prelude::BitVec, view::BitView};
+
+pub fn write_3bit(bv: &mut BitVec<u8, Msb0>, n: u8) {
+    bv.extend_from_bitslice(&n.view_bits::<Msb0>()[5..=7]);
+}
+
+pub fn write_4bit(bv: &mut BitVec<u8, Msb0>, n: u8) {
+    bv.extend_from_bitslice(&n.view_bits::<Msb0>()[4..=7]);
+}

libs/rust/src/lib.rs

@@ -3,3 +3,6 @@ pub mod daletl;
 
 #[cfg(feature = "types")]
 pub mod abstractions;
+
+#[cfg(feature = "daletpack")]
+pub mod daletpack;

libs/rust/src/main.rs

@@ -1,10 +1,21 @@
-use dalet::daletl::{Argument, Body, Tag, Tid};
+use std::fs;
+
+use dalet::{
+    abstractions::{HeadingLevel, Tag, ToDaletl},
+    daletpack::*,
+};
 
 fn main() {
-    let _ = Tag::new(
-        Tid::H,
-        Body::Text("I am Heading".to_string()),
-        Argument::Null,
-    );
-    println!("Hello, world!");
+    let dalet_page: Vec<Tag> = vec![Tag::H("I am heading".to_owned(), HeadingLevel::One)];
+
+    let data = encode(dalet_page.to_daletl()).unwrap();
+
+    println!("{:#?}", data);
+    println!("{}", data.len());
+
+    let bits: Vec<_> = data.iter().map(|n| format!("{:b}", n)).collect();
+
+    println!("{}", bits.join(""));
+    // 11010000100111011010010010010000110000101101101001000011010011001010110000101100101101001011011111001111111111
+    fs::write("./test.daletpack", data).unwrap();
 }