Bump named-binary-tag to 0.6

Co-authored-by: mibac138 <5672750+mibac138@users.noreply.github.com>

Cargo.toml

@@ -3,5 +3,4 @@
 members = [
     "protocol",
     "protocol-derive",
-    "protocol-generator",
 ]

README.md

@@ -1,7 +1,7 @@
 minecraft-protocol
 ============
 [![crates.io](https://img.shields.io/crates/v/minecraft-protocol.svg)](https://crates.io/crates/minecraft-protocol)
-[![Build Status](https://travis-ci.com/eihwaz/minecraft-protocol.svg?branch=master)](https://travis-ci.com/eihwaz/minecraft-protocol)
+[![Build Status](https://travis-ci.com/eihwaz/minecraft-protocol.svg?branch=master)](https://app.travis-ci.com/github/eihwaz/minecraft-protocol)
 [![codecov](https://codecov.io/gh/eihwaz/minecraft-protocol/branch/master/graph/badge.svg)](https://codecov.io/gh/eihwaz/minecraft-protocol)
 
 Library for decoding and encoding Minecraft packets

protocol-derive/Cargo.toml

@@ -16,7 +16,3 @@ proc-macro = true
 proc-macro2 = "1.0"
 syn = "1.0"
 quote = "1.0"
-
-[dev-dependencies]
-minecraft-protocol = { version = "0.1.0", path = "../protocol" }
-byteorder = "1"

protocol-derive/src/error.rs

@@ -0,0 +1,44 @@
+use syn::Error as SynError;
+
+/// Possible errors while deriving.
+#[derive(Debug)]
+pub(crate) enum DeriveInputParserError {
+    /// Derive attribute must be placed on a structure or enum.
+    UnsupportedData,
+    /// Data fields must be named.
+    UnnamedDataFields,
+    /// Possible errors while parsing attributes.
+    AttributeError { attribute_error: AttributeError },
+}
+
+/// Possible errors while parsing attributes.
+#[derive(Debug)]
+pub(crate) enum AttributeError {
+    /// Failed to parse field meta due incorrect syntax.
+    BadAttributeSyntax { syn_error: SynError },
+    /// Unsupported field attribute type.
+    UnsupportedAttribute,
+    /// Field meta has wrong value type.
+    /// For example an int was expected, but a string was supplied.
+    AttributeWrongValueType,
+}
+
+impl From<AttributeError> for DeriveInputParserError {
+    fn from(attribute_error: AttributeError) -> Self {
+        DeriveInputParserError::AttributeError { attribute_error }
+    }
+}
+
+impl From<SynError> for DeriveInputParserError {
+    fn from(syn_error: SynError) -> Self {
+        DeriveInputParserError::AttributeError {
+            attribute_error: AttributeError::BadAttributeSyntax { syn_error },
+        }
+    }
+}
+
+impl From<SynError> for AttributeError {
+    fn from(syn_error: SynError) -> Self {
+        AttributeError::BadAttributeSyntax { syn_error }
+    }
+}

protocol-derive/src/lib.rs

@@ -1,390 +1,42 @@
 extern crate proc_macro;
 
-use proc_macro::TokenStream as TokenStream1;
+use crate::parse::{parse_derive_input, DeriveInputParseResult};
-use proc_macro2::TokenStream as TokenStream2;
+use crate::render::decoder::{render_enum_decoder, render_struct_decoder};
-use proc_macro2::{Ident, Span};
+use crate::render::encoder::{render_enum_encoder, render_struct_encoder};
-use quote::{quote, TokenStreamExt};
+use proc_macro::TokenStream;
-use std::iter::FromIterator;
+use syn::parse_macro_input;
-use syn::{parse_macro_input, Data, DeriveInput, Field, Fields, Lit, Meta, NestedMeta, Type};
+use syn::DeriveInput;
 
-#[proc_macro_derive(Packet, attributes(packet))]
+mod error;
-pub fn derive_packet(input: proc_macro::TokenStream) -> TokenStream1 {
+mod parse;
-    let input = parse_macro_input!(input as DeriveInput);
+mod render;
-    let name = &input.ident;
 
-    match input.data {
+#[proc_macro_derive(Encoder, attributes(data_type))]
-        Data::Struct(data) => {
+pub fn derive_encoder(tokens: TokenStream) -> TokenStream {
-            let fields = &data.fields;
+    let input = parse_macro_input!(tokens as DeriveInput);
+    let derive_parse_result = parse_derive_input(&input).expect("Failed to parse derive input");
 
-            let encoder = impl_encoder_trait(name, fields);
+    TokenStream::from(match derive_parse_result {
-            let decoder = impl_decoder_trait(name, fields);
+        DeriveInputParseResult::Struct { name, fields } => render_struct_encoder(name, &fields),
-
+        DeriveInputParseResult::Enum {
-            println!("{}", decoder);
+            name,
-
+            discriminant_type,
-            TokenStream1::from(quote! {
+            variants,
-                #encoder
+        } => render_enum_encoder(name, &discriminant_type, &variants),
-
-                #decoder
     })
-        }
-        _ => panic!("Expected only structures"),
-    }
 }
 
-fn impl_encoder_trait(name: &Ident, fields: &Fields) -> TokenStream2 {
+#[proc_macro_derive(Decoder, attributes(data_type))]
-    let encode = quote_field(fields, |field| {
+pub fn derive_decoder(tokens: TokenStream) -> TokenStream {
-        let name = &field.ident;
+    let input = parse_macro_input!(tokens as DeriveInput);
+    let derive_parse_result = parse_derive_input(&input).expect("Failed to parse derive input");
 
-        let unparsed_meta = get_packet_field_meta(field);
+    TokenStream::from(match derive_parse_result {
-        let parsed_meta = parse_packet_field_meta(&unparsed_meta);
+        DeriveInputParseResult::Struct { name, fields } => render_struct_decoder(name, &fields),
-
+        DeriveInputParseResult::Enum {
-        // This is special case because max length are used only for strings.
+            name,
-        if let Some(max_length) = parsed_meta.max_length {
+            discriminant_type,
-            return quote! {
+            variants,
-                crate::EncoderWriteExt::write_string(writer, &self.#name, #max_length)?;
+        } => render_enum_decoder(name, &discriminant_type, &variants),
-            };
-        }
-
-        let module = parsed_meta.module.as_deref().unwrap_or("Encoder");
-        let module_ident = Ident::new(&module, Span::call_site());
-
-        quote! {
-            crate::#module_ident::encode(&self.#name, writer)?;
-        }
-    });
-
-    quote! {
-        #[automatically_derived]
-        impl crate::Encoder for #name {
-            fn encode<W: std::io::Write>(&self, writer: &mut W) -> Result<(), crate::EncodeError> {
-                #encode
-
-                Ok(())
-            }
-        }
-    }
-}
-
-fn impl_decoder_trait(name: &Ident, fields: &Fields) -> TokenStream2 {
-    let mut bitfields = vec![];
-    let total_fields = fields.iter().count();
-    let mut current = 0;
-
-    let decode = quote_field(fields, |field| {
-        let name = &field.ident;
-        let ty = &field.ty;
-
-        let unparsed_meta = get_packet_field_meta(field);
-        let parsed_meta = parse_packet_field_meta(&unparsed_meta);
-
-        let mut result = quote!();
-
-        // When we encounter a bitfield, we skip writing until we get
-        // to the last bit field or the last field.
-        match &parsed_meta.bitfield {
-            Some(bitfield) => {
-                bitfields.push((field.clone(), bitfield.clone()));
-            }
-            None => {
-                result.append_all(quote_decoder_bitfield(&bitfields));
-                bitfields.clear();
-            }
-        }
-
-        current += 1;
-
-        if !bitfields.is_empty() {
-            return if current == total_fields {
-                result.append_all(quote_decoder_bitfield(&bitfields));
-                bitfields.clear();
-                result
-            } else {
-                quote!()
-            };
-        }
-
-        // This is special case because max length are used only for strings.
-        if let Some(max_length) = parsed_meta.max_length {
-            result.append_all(quote! {
-                let #name = crate::DecoderReadExt::read_string(reader, #max_length)?;
-            });
-
-            return result;
-        }
-
-        match &parsed_meta.module {
-            Some(module) => {
-                let module_ident = Ident::new(module, Span::call_site());
-
-                result.append_all(quote! {
-                    let #name = crate::#module_ident::decode(reader)?;
     })
-            }
-            None => {
-                result.append_all(quote! {
-                    let #name = <#ty as crate::Decoder>::decode(reader)?;
-                });
-            }
-        }
-
-        return result;
-    });
-
-    let create = quote_field(fields, |field| {
-        let name = &field.ident;
-
-        quote! {
-             #name,
-        }
-    });
-
-    quote! {
-        #[automatically_derived]
-        impl crate::Decoder for #name {
-            type Output = Self;
-
-            fn decode<R: std::io::Read>(reader: &mut R) -> Result<Self::Output, crate::DecodeError> {
-                #decode
-
-                Ok(#name {
-                    #create
-                })
-            }
-        }
-    }
-}
-
-#[derive(Debug)]
-struct PacketFieldMeta {
-    module: Option<String>,
-    max_length: Option<u16>,
-    bitfield: Option<Bitfield>,
-}
-
-#[derive(Debug, Clone)]
-struct Bitfield {
-    size: usize,
-}
-
-macro_rules! decode_bitmask_value (
-    ($value: expr, $name: ident) => (
-        fn $name(
-            result: &mut TokenStream2,
-            name: &Option<Ident>,
-            ty: &Type,
-            bitfield_size: usize,
-            current: usize,
-            signed: bool,
-        ) {
-            let mask = (2 << (bitfield_size - 1)) - $value;
-            let bool = match ty {
-                Type::Path(type_path) => type_path
-                    .path
-                    .get_ident()
-                    .expect("Failed to get ident")
-                    .to_string() == "bool",
-                _ => false,
-            };
-
-            if bool {
-              if current > 0 {
-                result.append_all(quote! {
-                  let mut #name = ((encoded >> #current) & #mask) != 0;
-                });
-              } else {
-                result.append_all(quote! {
-                  let mut #name = (encoded & #mask) != 0;
-                });
-              }
-            } else {
-              if current > 0 {
-                result.append_all(quote! {
-                  let mut #name = ((encoded >> #current) & #mask) as #ty;
-                });
-              } else {
-                result.append_all(quote! {
-                  let mut #name = (encoded & #mask) as #ty;
-                });
-              }
-            }
-
-            if signed {
-              let subtract = mask + 1;
-              let overflow = subtract >> 1;
-
-              result.append_all(quote! {
-                  if #name > #overflow as #ty {
-                    #name -= #subtract as #ty;
-                  }
-              });
-            }
-        }
-    )
-);
-
-decode_bitmask_value!(1i64, decode_i64_bitmask_value);
-decode_bitmask_value!(1i32, decode_i32_bitmask_value);
-decode_bitmask_value!(1i16, decode_i16_bitmask_value);
-decode_bitmask_value!(1i8, decode_i8_bitmask_value);
-
-fn quote_decoder_bitfield(bitfields: &Vec<(Field, Bitfield)>) -> TokenStream2 {
-    if bitfields.is_empty() {
-        return quote!();
-    }
-
-    let total_size: usize = bitfields.iter().map(|(_, b)| b.size).sum();
-
-    let mut result = read_decoder_bitfield_quote(total_size);
-    let mut current = total_size;
-
-    for (field, bitfield) in bitfields {
-        current -= bitfield.size;
-
-        let name = &field.ident;
-        let ty = &field.ty;
-
-        let signed = match ty {
-            Type::Path(type_path) => type_path
-                .path
-                .get_ident()
-                .expect("Failed to get ident")
-                .to_string()
-                .starts_with("i"),
-            _ => panic!("Unexpected bitfield type"),
-        };
-
-        match total_size {
-            _ if total_size == 64 => {
-                decode_i64_bitmask_value(&mut result, name, ty, bitfield.size, current, signed)
-            }
-            _ if total_size == 32 => {
-                decode_i32_bitmask_value(&mut result, name, ty, bitfield.size, current, signed)
-            }
-            _ if total_size == 16 => {
-                decode_i16_bitmask_value(&mut result, name, ty, bitfield.size, current, signed)
-            }
-            _ => decode_i8_bitmask_value(&mut result, name, ty, bitfield.size, current, signed),
-        }
-    }
-
-    return result;
-}
-
-fn read_decoder_bitfield_quote(total_size: usize) -> TokenStream2 {
-    match total_size {
-        _ if total_size == 64 => {
-            quote! {
-                let encoded = ::byteorder::ReadBytesExt::read_i64::<::byteorder::BigEndian>(reader)?;
-            }
-        }
-        _ if total_size == 32 => {
-            quote! {
-                let encoded = ::byteorder::ReadBytesExt::read_i32::<::byteorder::BigEndian>(reader)?;
-            }
-        }
-        _ if total_size == 16 => {
-            quote! {
-                let encoded = ::byteorder::ReadBytesExt::read_i16::<::byteorder::BigEndian>(reader)?;
-            }
-        }
-        _ if total_size == 8 => {
-            quote! {
-                let encoded = ::byteorder::ReadBytesExt::read_i8(reader)?;
-            }
-        }
-        _ => panic!("Bitfield size must be aligned to 8, 16, 32 or 64"),
-    }
-}
-
-fn parse_packet_field_meta(meta_list: &Vec<NestedMeta>) -> PacketFieldMeta {
-    let mut module = None;
-    let mut max_length = None;
-    let mut bitfield = None;
-
-    for meta in meta_list {
-        match meta {
-            NestedMeta::Meta(Meta::NameValue(named_meta)) => match &named_meta.path {
-                path if path.is_ident("with") => match &named_meta.lit {
-                    Lit::Str(lit_str) => module = Some(lit_str.value()),
-                    _ => panic!("\"with\" attribute value must be string"),
-                },
-                path if path.is_ident("max_length") => match &named_meta.lit {
-                    Lit::Int(lit_int) => {
-                        max_length = Some(
-                            lit_int
-                                .base10_parse::<u16>()
-                                .expect("Failed to parse max length attribute"),
-                        )
-                    }
-                    _ => panic!("\"max_length\" attribute value must be integer"),
-                },
-                path => panic!(
-                    "Received unrecognized attribute : \"{}\"",
-                    path.get_ident().expect("Failed to get ident")
-                ),
-            },
-            NestedMeta::Meta(Meta::List(meta_list)) if meta_list.path.is_ident("bitfield") => {
-                let mut size = None;
-
-                for meta in &meta_list.nested {
-                    match meta {
-                        NestedMeta::Meta(Meta::NameValue(named_meta)) => match &named_meta.path {
-                            path if path.is_ident("size") => match &named_meta.lit {
-                                Lit::Int(lit_int) => {
-                                    size = Some(
-                                        lit_int
-                                            .base10_parse::<usize>()
-                                            .expect("Failed to parse size attribute"),
-                                    )
-                                }
-                                _ => panic!("\"size\" attribute value must be integer"),
-                            },
-                            path => panic!(
-                                "Received unrecognized attribute : \"{}\"",
-                                path.get_ident().expect("Failed to get ident")
-                            ),
-                        },
-                        _ => panic!("Unexpected field meta"),
-                    }
-                }
-
-                let size = size.unwrap_or_else(|| panic!("Size must be specified in bitfield"));
-                bitfield = Some(Bitfield { size })
-            }
-            _ => panic!("Unexpected field meta"),
-        }
-    }
-
-    PacketFieldMeta {
-        module,
-        max_length,
-        bitfield,
-    }
-}
-
-fn get_packet_field_meta(field: &Field) -> Vec<NestedMeta> {
-    field
-        .attrs
-        .iter()
-        .filter(|a| a.path.is_ident("packet"))
-        .map(|a| a.parse_meta().expect("Failed to parse field attribute"))
-        .map(|m| match m {
-            Meta::List(meta_list) => Vec::from_iter(meta_list.nested),
-            _ => panic!("Expected only list attributes"),
-        })
-        .flatten()
-        .collect()
-}
-
-fn quote_field<F: FnMut(&Field) -> TokenStream2>(fields: &Fields, mut func: F) -> TokenStream2 {
-    let mut output = quote!();
-
-    match fields {
-        Fields::Named(named_fields) => {
-            output.append_all(named_fields.named.iter().map(|f| func(f)))
-        }
-        _ => panic!("Expected only for named fields"),
-    }
-
-    output
 }

protocol-derive/src/parse.rs

@@ -0,0 +1,291 @@
+use crate::error::{AttributeError, DeriveInputParserError};
+use proc_macro2::Ident;
+use std::iter::FromIterator;
+use syn::punctuated::Punctuated;
+use syn::{
+    Attribute, Data, DeriveInput, ExprLit, Field, Fields, FieldsNamed, Lit, Meta, NestedMeta, Type,
+};
+use syn::{Error as SynError, Variant};
+use syn::{Expr, Token};
+
+pub(crate) enum DeriveInputParseResult<'a> {
+    Struct {
+        name: &'a Ident,
+        fields: Vec<FieldData<'a>>,
+    },
+    Enum {
+        name: &'a Ident,
+        discriminant_type: DiscriminantType,
+        variants: Vec<VariantData<'a>>,
+    },
+}
+
+pub(crate) struct VariantData<'a> {
+    pub(crate) discriminant: usize,
+    pub(crate) name: &'a Ident,
+    pub(crate) fields: Vec<FieldData<'a>>,
+}
+
+pub(crate) struct FieldData<'a> {
+    pub(crate) name: &'a Ident,
+    pub(crate) ty: &'a Type,
+    pub(crate) attribute: AttributeData,
+}
+
+#[derive(Debug, Eq, PartialEq)]
+pub(crate) enum AttributeData {
+    With { module: String },
+    MaxLength { length: usize },
+    Bitfield { idx: u8, position: BitfieldPosition },
+    Empty,
+}
+
+#[derive(Debug, Eq, PartialEq)]
+pub(crate) enum DiscriminantType {
+    UnsignedByte,
+    VarInt,
+}
+
+#[derive(Debug, Eq, PartialEq)]
+pub(crate) enum BitfieldPosition {
+    Start,
+    Intermediate,
+    End,
+}
+
+pub(crate) fn parse_derive_input(
+    input: &DeriveInput,
+) -> Result<DeriveInputParseResult, DeriveInputParserError> {
+    let name = &input.ident;
+
+    match &input.data {
+        Data::Struct(data_struct) => match &data_struct.fields {
+            Fields::Named(named_fields) => {
+                let fields = parse_fields(named_fields)?;
+
+                Ok(DeriveInputParseResult::Struct { name, fields })
+            }
+            _ => Err(DeriveInputParserError::UnnamedDataFields),
+        },
+        Data::Enum(data_enum) => {
+            let variants = parse_variants(&data_enum.variants)?;
+            let discriminant_type = parse_discriminant_type(&input.attrs)?;
+
+            Ok(DeriveInputParseResult::Enum {
+                name,
+                discriminant_type,
+                variants,
+            })
+        }
+        _ => Err(DeriveInputParserError::UnsupportedData),
+    }
+}
+
+fn parse_discriminant_type(
+    attributes: &Vec<Attribute>,
+) -> Result<DiscriminantType, DeriveInputParserError> {
+    let nested_metas = parse_attributes_nested_metas(attributes)?;
+    let attribute = parse_attribute(nested_metas, None, 0)?;
+
+    match attribute {
+        AttributeData::With { module } if module == "var_int" => Ok(DiscriminantType::VarInt),
+        _ => Ok(DiscriminantType::UnsignedByte),
+    }
+}
+
+fn parse_variants(
+    variants: &Punctuated<Variant, Token![,]>,
+) -> Result<Vec<VariantData>, DeriveInputParserError> {
+    variants
+        .iter()
+        .enumerate()
+        .map(|(idx, v)| parse_variant(idx, v))
+        .collect()
+}
+
+fn parse_variant(idx: usize, variant: &Variant) -> Result<VariantData, DeriveInputParserError> {
+    let discriminant = parse_variant_discriminant(variant).unwrap_or(idx);
+    let name = &variant.ident;
+
+    let fields = match &variant.fields {
+        Fields::Named(named_fields) => parse_fields(named_fields),
+        Fields::Unit => Ok(Vec::new()),
+        _ => Err(DeriveInputParserError::UnnamedDataFields),
+    }?;
+
+    Ok(VariantData {
+        discriminant,
+        name,
+        fields,
+    })
+}
+
+fn parse_variant_discriminant(variant: &Variant) -> Option<usize> {
+    variant
+        .discriminant
+        .as_ref()
+        .and_then(|(_, expr)| match expr {
+            Expr::Lit(ExprLit {
+                lit: Lit::Int(lit_int),
+                ..
+            }) => lit_int.base10_parse().ok(),
+            _ => None,
+        })
+}
+
+fn parse_fields(named_fields: &FieldsNamed) -> Result<Vec<FieldData>, DeriveInputParserError> {
+    let mut fields_data = Vec::new();
+    let mut current_bitfield_idx = 0;
+
+    let fields: Vec<&Field> = named_fields.named.iter().collect();
+
+    for (idx, field) in fields.iter().enumerate() {
+        let name = field.ident.as_ref().unwrap();
+        let ty = &field.ty;
+
+        let nested_metas = parse_attributes_nested_metas(&field.attrs)?;
+
+        let next_field_opt = fields.get(idx + 1);
+        let next_nested_metas_opt = next_field_opt
+            .and_then(|next_field| parse_attributes_nested_metas(&next_field.attrs).ok());
+
+        let attribute = parse_attribute(nested_metas, next_nested_metas_opt, current_bitfield_idx)?;
+
+        match attribute {
+            AttributeData::Bitfield { .. } => current_bitfield_idx += 1,
+            _ => current_bitfield_idx = 0,
+        }
+
+        fields_data.push(FieldData {
+            name,
+            ty,
+            attribute,
+        })
+    }
+
+    Ok(fields_data)
+}
+
+fn parse_attributes_nested_metas(
+    attributes: &Vec<Attribute>,
+) -> Result<Vec<NestedMeta>, DeriveInputParserError> {
+    let parsed_metas = attributes
+        .iter()
+        .filter(|a| a.path.is_ident("data_type"))
+        .map(|a| a.parse_meta())
+        .collect::<Result<Vec<Meta>, SynError>>()?;
+
+    let nested_metas = parsed_metas
+        .into_iter()
+        .map(|m| match m {
+            Meta::List(meta_list) => Ok(Vec::from_iter(meta_list.nested)),
+            _ => Err(AttributeError::UnsupportedAttribute),
+        })
+        .collect::<Result<Vec<Vec<NestedMeta>>, AttributeError>>()?;
+
+    Ok(nested_metas.into_iter().flatten().collect())
+}
+
+fn parse_attribute(
+    nested_metas: Vec<NestedMeta>,
+    next_nested_metas_opt: Option<Vec<NestedMeta>>,
+    current_bitfield_idx: u8,
+) -> Result<AttributeData, DeriveInputParserError> {
+    let simple_attribute_parsers: Vec<fn(&NestedMeta) -> Result<AttributeData, AttributeError>> =
+        vec![get_module_attribute, get_max_length_attribute];
+
+    for nested_meta in nested_metas.iter() {
+        let bitfield_attribute =
+            get_bitfield_attribute(current_bitfield_idx, nested_meta, &next_nested_metas_opt);
+
+        if bitfield_attribute != AttributeData::Empty {
+            return Ok(bitfield_attribute);
+        }
+
+        for attribute_parser in simple_attribute_parsers.iter() {
+            let attribute = attribute_parser(nested_meta)?;
+
+            if attribute != AttributeData::Empty {
+                return Ok(attribute);
+            }
+        }
+    }
+
+    Ok(AttributeData::Empty)
+}
+
+fn get_module_attribute(nested_meta: &NestedMeta) -> Result<AttributeData, AttributeError> {
+    if let NestedMeta::Meta(Meta::NameValue(named_meta)) = nested_meta {
+        if matches!(&named_meta.path, path if path.is_ident("with")) {
+            return match &named_meta.lit {
+                Lit::Str(lit_str) => Ok(AttributeData::With {
+                    module: lit_str.value(),
+                }),
+                _ => Err(AttributeError::AttributeWrongValueType),
+            };
+        }
+    }
+
+    Ok(AttributeData::Empty)
+}
+
+fn get_max_length_attribute(nested_meta: &NestedMeta) -> Result<AttributeData, AttributeError> {
+    if let NestedMeta::Meta(Meta::NameValue(named_meta)) = nested_meta {
+        if matches!(&named_meta.path, path if path.is_ident("max_length")) {
+            return match &named_meta.lit {
+                Lit::Int(lit_int) => Ok(AttributeData::MaxLength {
+                    length: lit_int.base10_parse()?,
+                }),
+                _ => Err(AttributeError::AttributeWrongValueType),
+            };
+        }
+    }
+
+    Ok(AttributeData::Empty)
+}
+
+fn get_bitfield_attribute(
+    current_bitfield_idx: u8,
+    nested_meta: &NestedMeta,
+    next_nested_metas_opt: &Option<Vec<NestedMeta>>,
+) -> AttributeData {
+    if is_bitfield_attribute(nested_meta) {
+        let position = calc_bitfield_position(current_bitfield_idx, next_nested_metas_opt);
+
+        AttributeData::Bitfield {
+            idx: current_bitfield_idx,
+            position,
+        }
+    } else {
+        AttributeData::Empty
+    }
+}
+
+fn calc_bitfield_position(
+    current_bitfield_idx: u8,
+    next_nested_metas_opt: &Option<Vec<NestedMeta>>,
+) -> BitfieldPosition {
+    fn next_has_bitfield_attribute(next_nested_metas: &Vec<NestedMeta>) -> bool {
+        next_nested_metas
+            .iter()
+            .any(|nested_meta| is_bitfield_attribute(nested_meta))
+    }
+
+    match next_nested_metas_opt {
+        Some(next_nested_metas) if (next_has_bitfield_attribute(&next_nested_metas)) => {
+            if current_bitfield_idx == 0 {
+                BitfieldPosition::Start
+            } else {
+                BitfieldPosition::Intermediate
+            }
+        }
+        _ => BitfieldPosition::End,
+    }
+}
+
+fn is_bitfield_attribute(nested_meta: &NestedMeta) -> bool {
+    match nested_meta {
+        NestedMeta::Meta(Meta::Path(path)) => path.is_ident("bitfield"),
+        _ => false,
+    }
+}

protocol-derive/src/render/decoder.rs

@@ -0,0 +1,185 @@
+use crate::parse::{AttributeData, BitfieldPosition, DiscriminantType, FieldData, VariantData};
+use proc_macro2::TokenStream as TokenStream2;
+use proc_macro2::{Ident, Span};
+use quote::quote;
+use syn::Type;
+
+pub(crate) fn render_struct_decoder(name: &Ident, fields: &Vec<FieldData>) -> TokenStream2 {
+    let field_names_joined_comma = render_field_names_joined_comma(fields);
+    let render_fields = render_fields(fields);
+
+    quote! {
+        #[automatically_derived]
+        impl crate::decoder::Decoder for #name {
+            type Output = Self;
+
+            fn decode<R: std::io::Read>(reader: &mut R) -> Result<Self::Output, crate::error::DecodeError> {
+                #render_fields
+
+                Ok(#name {
+                    #field_names_joined_comma
+                })
+            }
+        }
+    }
+}
+
+pub(crate) fn render_enum_decoder(
+    name: &Ident,
+    discriminant_type: &DiscriminantType,
+    variants: &Vec<VariantData>,
+) -> TokenStream2 {
+    let render_variants = render_variants(discriminant_type, variants);
+    let render_discriminant_type = render_discriminant_type(discriminant_type);
+
+    quote! {
+        #[automatically_derived]
+        impl crate::decoder::Decoder for #name {
+            type Output = Self;
+
+            fn decode<R: std::io::Read>(reader: &mut R) -> Result<Self::Output, crate::error::DecodeError> {
+                let type_id = #render_discriminant_type;
+
+                match type_id {
+                    #render_variants
+                    _ => Err(DecodeError::UnknownEnumType { type_id: type_id as usize, }),
+                }
+            }
+        }
+    }
+}
+
+fn render_variants(
+    discriminant_type: &DiscriminantType,
+    variants: &Vec<VariantData>,
+) -> TokenStream2 {
+    variants
+        .iter()
+        .map(|v| render_variant(discriminant_type, v))
+        .collect()
+}
+
+fn render_variant(discriminant_type: &DiscriminantType, variant: &VariantData) -> TokenStream2 {
+    if variant.fields.is_empty() {
+        render_unit_variant(discriminant_type, variant)
+    } else {
+        render_struct_variant(discriminant_type, variant)
+    }
+}
+
+fn render_unit_variant(
+    discriminant_type: &DiscriminantType,
+    variant: &VariantData,
+) -> TokenStream2 {
+    let discriminant = render_discriminant(discriminant_type, variant.discriminant);
+    let name = variant.name;
+
+    quote! {
+        #discriminant => Ok(Self::#name),
+    }
+}
+
+fn render_struct_variant(
+    discriminant_type: &DiscriminantType,
+    variant: &VariantData,
+) -> TokenStream2 {
+    let discriminant = render_discriminant(discriminant_type, variant.discriminant);
+    let name = variant.name;
+    let fields = &variant.fields;
+
+    let field_names_joined_comma = render_field_names_joined_comma(fields);
+    let render_fields = render_fields(fields);
+
+    quote! {
+        #discriminant => {
+            #render_fields
+
+            Ok(Self::#name {
+                #field_names_joined_comma
+            })
+        }
+    }
+}
+
+fn render_discriminant_type(discriminant_type: &DiscriminantType) -> TokenStream2 {
+    match discriminant_type {
+        DiscriminantType::UnsignedByte => {
+            quote!(reader.read_u8()?;)
+        }
+        DiscriminantType::VarInt => {
+            quote!(reader.read_var_i32()?;)
+        }
+    }
+}
+
+fn render_discriminant(discriminant_type: &DiscriminantType, discriminant: usize) -> TokenStream2 {
+    match discriminant_type {
+        DiscriminantType::UnsignedByte => {
+            let u8 = discriminant as u8;
+            quote!(#u8)
+        }
+        DiscriminantType::VarInt => {
+            let i32 = discriminant as i32;
+            quote!(#i32)
+        }
+    }
+}
+
+fn render_field_names_joined_comma(fields: &Vec<FieldData>) -> TokenStream2 {
+    fields.iter().map(|f| f.name).map(|n| quote!(#n,)).collect()
+}
+
+fn render_fields(fields: &Vec<FieldData>) -> TokenStream2 {
+    fields.iter().map(|f| render_field(f)).collect()
+}
+
+fn render_field(field: &FieldData) -> TokenStream2 {
+    let name = field.name;
+    let ty = field.ty;
+
+    match &field.attribute {
+        AttributeData::With { module } => render_with_field(name, module),
+        AttributeData::MaxLength { length } => render_max_length_field(name, *length as u16),
+        AttributeData::Bitfield { idx, position } => render_bitfield(name, *idx, position),
+        AttributeData::Empty => render_simple_field(name, ty),
+    }
+}
+
+fn render_simple_field(name: &Ident, ty: &Type) -> TokenStream2 {
+    quote! {
+        let #name = <#ty as crate::decoder::Decoder>::decode(reader)?;
+    }
+}
+
+fn render_with_field(name: &Ident, module: &str) -> TokenStream2 {
+    let module_ident = Ident::new(module, Span::call_site());
+
+    quote! {
+        let #name = crate::decoder::#module_ident::decode(reader)?;
+    }
+}
+
+fn render_max_length_field(name: &Ident, max_length: u16) -> TokenStream2 {
+    quote! {
+        let #name = crate::decoder::DecoderReadExt::read_string(reader, #max_length)?;
+    }
+}
+
+fn render_bitfield(name: &Ident, idx: u8, position: &BitfieldPosition) -> TokenStream2 {
+    let mask = 1u8 << idx;
+
+    let render_mask = quote! {
+        let #name = flags & #mask > 0;
+    };
+
+    match position {
+        BitfieldPosition::Start => {
+            quote! {
+              let flags = reader.read_u8()?;
+
+              #render_mask
+            }
+        }
+        _ => render_mask,
+    }
+}

protocol-derive/src/render/encoder.rs

@@ -0,0 +1,191 @@
+use crate::parse::{AttributeData, BitfieldPosition, DiscriminantType, FieldData, VariantData};
+use proc_macro2::TokenStream as TokenStream2;
+use proc_macro2::{Ident, Span};
+use quote::quote;
+
+pub(crate) fn render_struct_encoder(name: &Ident, fields: &Vec<FieldData>) -> TokenStream2 {
+    let render_fields = render_fields(fields, true);
+
+    quote! {
+        #[automatically_derived]
+        impl crate::encoder::Encoder for #name {
+            fn encode<W: std::io::Write>(&self, writer: &mut W) -> Result<(), crate::error::EncodeError> {
+                #render_fields
+
+                Ok(())
+            }
+        }
+    }
+}
+
+pub(crate) fn render_enum_encoder(
+    name: &Ident,
+    discriminant_type: &DiscriminantType,
+    variants: &Vec<VariantData>,
+) -> TokenStream2 {
+    let render_variants = render_variants(discriminant_type, variants);
+
+    quote! {
+        #[automatically_derived]
+        impl crate::encoder::Encoder for #name {
+            fn encode<W: std::io::Write>(&self, writer: &mut W) -> Result<(), crate::error::EncodeError> {
+                match self {
+                    #render_variants
+                }
+
+                Ok(())
+            }
+        }
+    }
+}
+
+fn render_variants(
+    discriminant_type: &DiscriminantType,
+    variants: &Vec<VariantData>,
+) -> TokenStream2 {
+    variants
+        .iter()
+        .map(|v| render_variant(discriminant_type, v))
+        .collect()
+}
+
+fn render_variant(discriminant_type: &DiscriminantType, variant: &VariantData) -> TokenStream2 {
+    if variant.fields.is_empty() {
+        render_unit_variant(discriminant_type, variant)
+    } else {
+        render_struct_variant(discriminant_type, variant)
+    }
+}
+
+fn render_unit_variant(
+    discriminant_type: &DiscriminantType,
+    variant: &VariantData,
+) -> TokenStream2 {
+    let discriminant = variant.discriminant;
+    let name = variant.name;
+
+    let render_discriminant_type = render_discriminant_type(discriminant_type, discriminant);
+
+    quote! {
+        Self::#name => {
+            #render_discriminant_type
+        }
+    }
+}
+
+fn render_struct_variant(
+    discriminant_type: &DiscriminantType,
+    variant: &VariantData,
+) -> TokenStream2 {
+    let discriminant = variant.discriminant;
+    let name = variant.name;
+    let fields = &variant.fields;
+
+    let render_discriminant_type = render_discriminant_type(discriminant_type, discriminant);
+    let field_names_joined_comma = render_field_names_joined_comma(fields);
+    let render_fields = render_fields(fields, false);
+
+    quote! {
+        Self::#name {
+            #field_names_joined_comma
+        } => {
+            #render_discriminant_type
+
+            #render_fields
+        }
+    }
+}
+
+fn render_discriminant_type(
+    discriminant_type: &DiscriminantType,
+    discriminant: usize,
+) -> TokenStream2 {
+    match discriminant_type {
+        DiscriminantType::UnsignedByte => {
+            let u8 = discriminant as u8;
+
+            quote!(writer.write_u8(#u8)?;)
+        }
+        DiscriminantType::VarInt => {
+            let var_i32 = discriminant as i32;
+
+            quote!(writer.write_var_i32(#var_i32)?;)
+        }
+    }
+}
+
+fn render_field_names_joined_comma(fields: &Vec<FieldData>) -> TokenStream2 {
+    fields.iter().map(|f| f.name).map(|n| quote!(#n,)).collect()
+}
+
+fn render_fields(fields: &Vec<FieldData>, with_self: bool) -> TokenStream2 {
+    fields.iter().map(|f| render_field(f, with_self)).collect()
+}
+
+fn render_field(field: &FieldData, with_self: bool) -> TokenStream2 {
+    let name = field.name;
+
+    match &field.attribute {
+        AttributeData::With { module } => render_with_field(name, module, with_self),
+        AttributeData::MaxLength { length } => {
+            render_max_length_field(name, *length as u16, with_self)
+        }
+        AttributeData::Bitfield { idx, position } => render_bitfield(name, *idx, position),
+        AttributeData::Empty => render_simple_field(name, with_self),
+    }
+}
+
+fn render_simple_field(name: &Ident, with_self: bool) -> TokenStream2 {
+    render_with_field(name, "Encoder", with_self)
+}
+
+fn render_with_field(name: &Ident, module: &str, with_self: bool) -> TokenStream2 {
+    let module_ident = Ident::new(module, Span::call_site());
+    let final_name = get_field_final_name(name, with_self);
+
+    quote! {
+        crate::encoder::#module_ident::encode(#final_name, writer)?;
+    }
+}
+
+fn render_max_length_field(name: &Ident, max_length: u16, with_self: bool) -> TokenStream2 {
+    let final_name = get_field_final_name(name, with_self);
+
+    quote! {
+        crate::encoder::EncoderWriteExt::write_string(writer, #final_name, #max_length)?;
+    }
+}
+
+fn render_bitfield(name: &Ident, idx: u8, position: &BitfieldPosition) -> TokenStream2 {
+    let mask = 1u8 << idx;
+
+    let render_mask = quote! {
+        if self.#name {
+            flags |= #mask;
+        }
+    };
+
+    match position {
+        BitfieldPosition::Start => quote!(
+            let mut flags = 0;
+
+            #render_mask
+        ),
+        BitfieldPosition::Intermediate => render_mask,
+        BitfieldPosition::End => {
+            quote! {
+                #render_mask
+
+                writer.write_u8(flags)?;
+            }
+        }
+    }
+}
+
+fn get_field_final_name(name: &Ident, with_self: bool) -> TokenStream2 {
+    if with_self {
+        quote!(&self.#name)
+    } else {
+        quote!(#name)
+    }
+}

protocol-derive/src/render/mod.rs

@@ -0,0 +1,2 @@
+pub(crate) mod decoder;
+pub(crate) mod encoder;

protocol-derive/tests/bitfield_abilities.rs

@@ -1,60 +0,0 @@
-#[macro_use]
-extern crate minecraft_protocol_derive;
-
-use minecraft_protocol::decoder::Decoder;
-use minecraft_protocol::encoder::Encoder;
-use minecraft_protocol::error::{DecodeError, EncodeError};
-
-#[derive(Packet)]
-pub struct Abilities {
-    #[packet(bitfield(size = 4))]
-    pub _unused: u8,
-    #[packet(bitfield(size = 1))]
-    pub creative_mode: bool,
-    #[packet(bitfield(size = 1))]
-    pub allow_flying: bool,
-    #[packet(bitfield(size = 1))]
-    pub flying: bool,
-    #[packet(bitfield(size = 1))]
-    pub invulnerable: bool,
-}
-
-#[cfg(test)]
-mod tests {
-    use crate::Abilities;
-    use minecraft_protocol::decoder::Decoder;
-    use minecraft_protocol::encoder::Encoder;
-    use minecraft_protocol::error::{DecodeError, EncodeError};
-    use std::io::Cursor;
-
-    #[test]
-    fn test_encode_abilities_i8_bitfield() {
-        let abilities = Abilities {
-            _unused: 0,
-            creative_mode: true,
-            allow_flying: true,
-            flying: true,
-            invulnerable: true,
-        };
-        let mut vec = Vec::new();
-
-        abilities
-            .encode(&mut vec)
-            .expect("Failed to encode abilities");
-        assert_eq!(vec, [15]);
-    }
-
-    #[test]
-    fn test_decode_abilities_i8_bitfield() {
-        let value = 15i8;
-
-        let vec = value.to_be_bytes().to_vec();
-        let mut cursor = Cursor::new(vec);
-
-        let abilities = Abilities::decode(&mut cursor).expect("Failed to decode abilities");
-        assert!(abilities.invulnerable);
-        assert!(abilities.flying);
-        assert!(abilities.allow_flying);
-        assert!(abilities.creative_mode);
-    }
-}

protocol-derive/tests/bitfield_half.rs

@@ -1,107 +0,0 @@
-#[macro_use]
-extern crate minecraft_protocol_derive;
-
-use minecraft_protocol::decoder::Decoder;
-use minecraft_protocol::encoder::Encoder;
-use minecraft_protocol::error::{DecodeError, EncodeError};
-
-#[derive(Packet)]
-pub struct HalfLong {
-    #[packet(bitfield(size = 32))]
-    pub _unused: u32,
-    #[packet(bitfield(size = 32))]
-    pub value: u32,
-}
-
-#[derive(Packet)]
-pub struct HalfInt {
-    #[packet(bitfield(size = 16))]
-    pub _unused: u16,
-    #[packet(bitfield(size = 16))]
-    pub value: u16,
-}
-
-#[derive(Packet)]
-pub struct HalfShort {
-    #[packet(bitfield(size = 8))]
-    pub _unused: u8,
-    #[packet(bitfield(size = 8))]
-    pub value: u8,
-}
-
-#[cfg(test)]
-mod tests {
-    use crate::{HalfInt, HalfLong, HalfShort};
-    use minecraft_protocol::decoder::Decoder;
-    use minecraft_protocol::encoder::Encoder;
-    use minecraft_protocol::error::{DecodeError, EncodeError};
-    use std::io::Cursor;
-
-    #[test]
-    fn test_encode_half_long_u64_bitfield() {
-        let half = HalfLong {
-            _unused: 0,
-            value: u32::MAX,
-        };
-        let mut vec = Vec::new();
-
-        half.encode(&mut vec).expect("Failed to encode half");
-        assert_eq!(vec, u32::MAX.to_be_bytes().to_vec());
-    }
-
-    #[test]
-    fn test_decode_half_long_u64_bitfield() {
-        let value = u32::MAX as u64;
-
-        let vec = value.to_be_bytes().to_vec();
-        let mut cursor = Cursor::new(vec);
-
-        let half = HalfLong::decode(&mut cursor).expect("Failed to decode half");
-        assert_eq!(half.value, u32::MAX);
-    }
-
-    #[test]
-    fn test_encode_half_int_u32_bitfield() {
-        let half = HalfInt {
-            _unused: 0,
-            value: u16::MAX,
-        };
-        let mut vec = Vec::new();
-
-        half.encode(&mut vec).expect("Failed to encode half");
-        assert_eq!(vec, u16::MAX.to_be_bytes().to_vec());
-    }
-
-    #[test]
-    fn test_decode_half_int_u32_bitfield() {
-        let value = u16::MAX as u32;
-
-        let vec = value.to_be_bytes().to_vec();
-        let mut cursor = Cursor::new(vec);
-
-        let half = HalfInt::decode(&mut cursor).expect("Failed to decode half");
-        assert_eq!(half.value, u16::MAX);
-    }
-
-    #[test]
-    fn test_encode_half_short_u8_bitfield() {
-        let half = HalfShort {
-            _unused: 0,
-            value: u8::MAX,
-        };
-        let mut vec = Vec::new();
-
-        half.encode(&mut vec).expect("Failed to encode half");
-        assert_eq!(vec, u8::MAX.to_be_bytes().to_vec());
-    }
-
-    #[test]
-    fn test_decode_half_short_u8_bitfield() {
-        let value = u8::MAX as u16;
-        let vec = value.to_be_bytes().to_vec();
-        let mut cursor = Cursor::new(vec);
-
-        let half = HalfShort::decode(&mut cursor).expect("Failed to decode half");
-        assert_eq!(half.value, u8::MAX);
-    }
-}

protocol-derive/tests/bitfield_position.rs

@@ -1,54 +0,0 @@
-#[macro_use]
-extern crate minecraft_protocol_derive;
-
-use minecraft_protocol::decoder::Decoder;
-use minecraft_protocol::encoder::Encoder;
-use minecraft_protocol::error::{DecodeError, EncodeError};
-
-#[derive(Packet)]
-pub struct Position {
-    #[packet(bitfield(size = 26))]
-    pub x: i32,
-    #[packet(bitfield(size = 26))]
-    pub z: i32,
-    #[packet(bitfield(size = 12))]
-    pub y: u16,
-}
-
-#[cfg(test)]
-mod tests {
-    use crate::Position;
-    use minecraft_protocol::decoder::Decoder;
-    use minecraft_protocol::encoder::Encoder;
-    use minecraft_protocol::error::{DecodeError, EncodeError};
-    use std::io::Cursor;
-
-    #[test]
-    fn test_encode_position_i64_bitfield() {
-        let position = Position {
-            x: 1000,
-            y: 64,
-            z: -1000,
-        };
-
-        let mut vec = Vec::new();
-
-        position
-            .encode(&mut vec)
-            .expect("Failed to encode position");
-
-        assert_eq!(vec, 275152780755008i64.to_be_bytes().to_vec());
-    }
-
-    #[test]
-    fn test_decode_position_i64_bitfield() {
-        let value = -137164079660992i64;
-        let vec = value.to_be_bytes().to_vec();
-        let mut cursor = Cursor::new(vec);
-        let position = Position::decode(&mut cursor).expect("Failed to decode position");
-
-        assert_eq!(position.x, -500);
-        assert_eq!(position.y, 64);
-        assert_eq!(position.z, -1000);
-    }
-}

protocol-generator/Cargo.toml

@@ -1,17 +0,0 @@
-[package]
-name = "minecraft-protocol-generator"
-version = "0.0.0"
-authors = ["vagola <vladislavs.golubs@yandex.ru>"]
-edition = "2018"
-description = "Minecraft protocol generator"
-license = "MIT"
-homepage = "https://github.com/eihwaz/minecraft-protocol"
-repository = "https://github.com/eihwaz/minecraft-protocol"
-keywords = ["minecraft", "protocol", "packet", "io"]
-
-[dependencies]
-serde = "1.0.120"
-serde_json = "1.0"
-handlebars = "3.5.2"
-heck = "0.3.2"
-protodef-parser = "0.1.0"

protocol-generator/src/error.rs

@@ -1,12 +0,0 @@
-use handlebars::RenderError;
-
-#[derive(Debug)]
-pub enum FrontendError {
-    TemplateRenderError { render_error: RenderError },
-}
-
-impl From<RenderError> for FrontendError {
-    fn from(render_error: RenderError) -> Self {
-        FrontendError::TemplateRenderError { render_error }
-    }
-}

protocol-generator/src/frontend.rs

@@ -1,138 +0,0 @@
-use crate::error::FrontendError;
-use handlebars::Handlebars;
-use serde::Serialize;
-use std::io::Write;
-
-#[derive(Debug, Eq, PartialEq, Serialize)]
-#[serde(tag = "type")]
-pub enum DataType {
-    #[serde(rename(serialize = "bool"))]
-    Boolean,
-    #[serde(rename(serialize = "i8"))]
-    Byte,
-    #[serde(rename(serialize = "u8"))]
-    UnsignedByte,
-    #[serde(rename(serialize = "i16"))]
-    Short,
-    #[serde(rename(serialize = "u16"))]
-    UnsignedShort,
-    #[serde(rename(serialize = "i32"))]
-    Int {
-        var_int: bool,
-    },
-    #[serde(rename(serialize = "u32"))]
-    UnsignedInt,
-    #[serde(rename(serialize = "i64"))]
-    Long {
-        var_long: bool,
-    },
-    #[serde(rename(serialize = "u64"))]
-    UnsignedLong,
-    #[serde(rename(serialize = "f32"))]
-    Float,
-    #[serde(rename(serialize = "f64"))]
-    Double,
-    String {
-        max_length: u16,
-    },
-    Uuid {
-        hyphenated: bool,
-    },
-    #[serde(rename(serialize = "Vec<u8>"))]
-    ByteArray {
-        rest: bool,
-    },
-    CompoundTag,
-    RefType {
-        ref_name: String,
-    },
-}
-
-#[derive(Debug, Eq, PartialEq, Serialize)]
-pub struct PacketStruct {
-    pub name: String,
-    pub fields: Vec<Field>,
-}
-
-impl PacketStruct {
-    pub fn new(name: impl ToString, fields: Vec<Field>) -> PacketStruct {
-        PacketStruct {
-            name: name.to_string(),
-            fields,
-        }
-    }
-}
-
-#[derive(Debug, Eq, PartialEq, Serialize)]
-pub struct Field {
-    pub name: String,
-    #[serde(flatten)]
-    pub data_type: DataType,
-}
-
-impl Field {
-    pub fn new(name: impl ToString, data_type: DataType) -> Field {
-        Field {
-            name: name.to_string(),
-            data_type,
-        }
-    }
-}
-
-fn write_packet_struct<W: Write>(
-    template_engine: &Handlebars,
-    packet_struct: PacketStruct,
-    write: &mut W,
-) -> Result<(), FrontendError> {
-    template_engine.render_to_write("packet_struct", &packet_struct, write)?;
-
-    Ok(())
-}
-
-#[cfg(test)]
-mod tests {
-    use crate::frontend::{write_packet_struct, DataType, Field, PacketStruct};
-    use crate::templates;
-
-    #[test]
-    fn test_write_packet_struct() {
-        let template_engine = templates::create_template_engine("templates");
-
-        let fields = vec![
-            Field::new("boolean", DataType::Boolean),
-            Field::new("byte", DataType::Byte),
-            Field::new("unsigned_byte", DataType::UnsignedByte),
-            Field::new("short", DataType::Short),
-            Field::new("unsigned_short", DataType::UnsignedShort),
-            Field::new("int", DataType::Int { var_int: false }),
-            Field::new("varint", DataType::Int { var_int: true }),
-            Field::new("unsigned_int", DataType::UnsignedInt),
-            Field::new("long", DataType::Long { var_long: false }),
-            Field::new("varlong", DataType::Long { var_long: true }),
-            Field::new("unsigned_long", DataType::UnsignedLong),
-            Field::new("float", DataType::Float),
-            Field::new("double", DataType::Double),
-            Field::new("string", DataType::String { max_length: 20 }),
-            Field::new("uuid", DataType::Uuid { hyphenated: false }),
-            Field::new("hyphenated", DataType::Uuid { hyphenated: true }),
-            Field::new("byte_array", DataType::ByteArray { rest: false }),
-            Field::new("rest", DataType::ByteArray { rest: true }),
-            Field::new("compound_tag", DataType::CompoundTag),
-            Field::new(
-                "ref",
-                DataType::RefType {
-                    ref_name: "Chat".to_string(),
-                },
-            ),
-        ];
-        let packet_struct = PacketStruct::new("TestPacket", fields);
-        let mut vec = vec![];
-
-        write_packet_struct(&template_engine, packet_struct, &mut vec)
-            .expect("Failed to write packet struct");
-
-        let result = String::from_utf8(vec).expect("Failed to convert vec to string");
-
-        assert_eq!(result, include_str!("../test/packet_struct.txt"));
-    }
-}

protocol-generator/src/main.rs

@@ -1,5 +0,0 @@
-mod error;
-mod frontend;
-mod templates;
-
-pub fn main() {}

protocol-generator/src/templates.rs

@@ -1,87 +0,0 @@
-use handlebars::{Context, Handlebars, Helper, Output, RenderContext, RenderError};
-use heck::SnakeCase;
-
-pub fn create_template_engine(templates_folder: &str) -> Handlebars<'static> {
-    let mut template_engine = Handlebars::new();
-
-    template_engine.register_helper("snake_case", Box::new(format_snake_case));
-    template_engine.register_helper("packet_id", Box::new(format_packet_id));
-    template_engine.register_helper(
-        "protocol_version_module",
-        Box::new(format_protocol_version_module),
-    );
-    template_engine.register_escape_fn(|s| s.to_owned());
-
-    register_template_file(&mut template_engine, templates_folder, "packet_struct");
-
-    template_engine
-}
-
-fn register_template_file(template_engine: &mut Handlebars, templates_folder: &str, name: &str) {
-    let tpl_path = format!("{}/{}.hbs", templates_folder, name);
-
-    template_engine
-        .register_template_file(name, tpl_path)
-        .expect("Failed to register template");
-}
-
-fn format_snake_case(
-    h: &Helper,
-    _: &Handlebars,
-    _: &Context,
-    _: &mut RenderContext,
-    out: &mut dyn Output,
-) -> Result<(), RenderError> {
-    let str = h
-        .param(0)
-        .and_then(|v| v.value().as_str())
-        .ok_or(RenderError::new(
-            "Param 0 with str type is required for snake case helper.",
-        ))? as &str;
-
-    let snake_case_str = str.to_snake_case();
-
-    out.write(snake_case_str.as_ref())?;
-    Ok(())
-}
-
-fn format_packet_id(
-    h: &Helper,
-    _: &Handlebars,
-    _: &Context,
-    _: &mut RenderContext,
-    out: &mut dyn Output,
-) -> Result<(), RenderError> {
-    let id = h
-        .param(0)
-        .and_then(|v| v.value().as_u64())
-        .ok_or(RenderError::new(
-            "Param 0 with u64 type is required for packet id helper.",
-        ))? as u64;
-
-    let packet_id_str = format!("{:#04X}", id);
-
-    out.write(packet_id_str.as_ref())?;
-    Ok(())
-}
-
-fn format_protocol_version_module(
-    h: &Helper,
-    _: &Handlebars,
-    _: &Context,
-    _: &mut RenderContext,
-    out: &mut dyn Output,
-) -> Result<(), RenderError> {
-    let version = h
-        .param(0)
-        .and_then(|v| v.value().as_str())
-        .ok_or(RenderError::new(
-            "Param 0 with str type is required for packet id helper.",
-        ))? as &str;
-
-    let formatted_protocol_module_version =
-        format!("v_{}", version.replace(".", "_").replace("-", "_"));
-
-    out.write(formatted_protocol_module_version.as_ref())?;
-    Ok(())
-}

protocol-generator/templates/packet_struct.hbs

@@ -1,19 +0,0 @@
-pub struct {{name}} {
-{{~#each fields as |f|}}
-    {{~#if f.var_int}}
-    #[packet(with = "var_int")]{{/if}}
-    {{~#if f.var_long}}
-    #[packet(with = "var_long")]{{/if}}
-    {{~#if f.rest}}
-    #[packet(with = "rest")]{{/if}}
-    {{~#if f.hyphenated}}
-    #[packet(with = "uuid_hyp_str")]{{/if}}
-    {{~#if f.max_length}}
-    #[packet(max_length = {{f.max_length}})]{{/if}}
-    {{~#if (ne f.type "RefType")}}
-    pub {{f.name}}: {{f.type}},
-    {{~else}}
-    pub {{f.name}}: {{f.ref_name}},
-    {{~/if}}
-{{~/each}}
-}

protocol-generator/test/packet_struct.txt

@@ -1,27 +0,0 @@
-pub struct TestPacket {
-    pub boolean: bool,
-    pub byte: i8,
-    pub unsigned_byte: u8,
-    pub short: i16,
-    pub unsigned_short: u16,
-    pub int: i32,
-    #[packet(with = "var_int")]
-    pub varint: i32,
-    pub unsigned_int: u32,
-    pub long: i64,
-    #[packet(with = "var_long")]
-    pub varlong: i64,
-    pub unsigned_long: u64,
-    pub float: f32,
-    pub double: f64,
-    #[packet(max_length = 20)]
-    pub string: String,
-    pub uuid: Uuid,
-    #[packet(with = "uuid_hyp_str")]
-    pub hyphenated: Uuid,
-    pub byte_array: Vec<u8>,
-    #[packet(with = "rest")]
-    pub rest: Vec<u8>,
-    pub compound_tag: CompoundTag,
-    pub ref: Chat,
-}

protocol/Cargo.toml

@@ -16,6 +16,4 @@ byteorder = "1"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 uuid = { version = "0.7", features = ["v4", "serde"] }
-num-traits = "0.2"
+named-binary-tag = "0.6"
-num-derive = "0.2"
-named-binary-tag = "0.2"

protocol/src/data/chat.rs

@@ -25,7 +25,7 @@
 //! ## Deserialize
 //!
 //! ```
-//! use minecraft_protocol::data::chat::{MessageBuilder, Color, Payload, Message};
+//! use minecraft_protocol::data::chat::{MessageBuilder, Payload, Message, Color};
 //!
 //! let json = r#"
 //! {
@@ -61,13 +61,14 @@
 //! assert_eq!(expected_message, Message::from_json(json).unwrap());
 //! ```
 
+use crate::impl_json_encoder_decoder;
 use serde::{
     de::{self, Visitor},
     Deserialize, Serialize,
 };
 use serde_json::Error;
 
-#[derive(Debug, Eq, PartialEq)]
+#[derive(Debug, Clone, Eq, PartialEq)]
 pub enum Color {
     Black,
     DarkBlue,
@@ -174,7 +175,7 @@ impl<'de> Deserialize<'de> for Color {
     }
 }
 
-#[derive(Debug, Eq, PartialEq, Serialize, Deserialize)]
+#[derive(Debug, Copy, Clone, Eq, PartialEq, Serialize, Deserialize)]
 #[serde(rename_all = "snake_case")]
 pub enum ClickAction {
     OpenUrl,
@@ -183,7 +184,7 @@ pub enum ClickAction {
     ChangePage,
 }
 
-#[derive(Debug, Eq, PartialEq, Serialize, Deserialize)]
+#[derive(Debug, Clone, Eq, PartialEq, Serialize, Deserialize)]
 pub struct ClickEvent {
     pub action: ClickAction,
     pub value: String,
@@ -198,7 +199,7 @@ impl ClickEvent {
     }
 }
 
-#[derive(Debug, Eq, PartialEq, Serialize, Deserialize)]
+#[derive(Debug, Copy, Clone, Eq, PartialEq, Serialize, Deserialize)]
 #[serde(rename_all = "snake_case")]
 pub enum HoverAction {
     ShowText,
@@ -206,7 +207,7 @@ pub enum HoverAction {
     ShowEntity,
 }
 
-#[derive(Debug, Eq, PartialEq, Serialize, Deserialize)]
+#[derive(Debug, Clone, Eq, PartialEq, Serialize, Deserialize)]
 pub struct HoverEvent {
     pub action: HoverAction,
     pub value: String,
@@ -221,7 +222,7 @@ impl HoverEvent {
     }
 }
 
-#[derive(Debug, Eq, PartialEq, Serialize, Deserialize)]
+#[derive(Debug, Clone, Eq, PartialEq, Serialize, Deserialize)]
 #[serde(untagged)]
 pub enum Payload {
     Text {
@@ -279,7 +280,7 @@ impl Payload {
     }
 }
 
-#[derive(Debug, Eq, PartialEq, Serialize, Deserialize)]
+#[derive(Debug, Clone, Eq, PartialEq, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct Message {
     #[serde(skip_serializing_if = "Option::is_none")]
@@ -323,6 +324,10 @@ impl Message {
         }
     }
 
+    pub fn from_str(text: &str) -> Message {
+        Message::new(Payload::text(text))
+    }
+
     pub fn from_json(json: &str) -> Result<Self, Error> {
         serde_json::from_str(json)
     }
@@ -332,6 +337,8 @@ impl Message {
     }
 }
 
+impl_json_encoder_decoder!(Message);
+
 pub struct MessageBuilder {
     current: Message,
     root: Option<Message>,
@@ -426,12 +433,8 @@ impl MessageBuilder {
     }
 }
 
-#[cfg(test)]
+#[test]
-mod tests {
+fn test_serialize_text_hello_world() {
-    use crate::data::chat::{Color, Message, MessageBuilder, Payload};
-
-    #[test]
-    fn test_serialize_text_hello_world() {
     let message = MessageBuilder::builder(Payload::text("Hello"))
         .color(Color::Yellow)
         .bold(true)
@@ -445,12 +448,12 @@ mod tests {
 
     assert_eq!(
         message.to_json().unwrap(),
-            include_str!("../test/chat/text_hello_world.json")
+        include_str!("../../test/chat/text_hello_world.json")
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_deserialize_text_hello_world() {
+fn test_deserialize_text_hello_world() {
     let expected_message = MessageBuilder::builder(Payload::text("Hello"))
         .color(Color::Yellow)
         .bold(true)
@@ -464,34 +467,34 @@ mod tests {
 
     assert_eq!(
         expected_message,
-            Message::from_json(include_str!("../test/chat/text_hello_world.json")).unwrap()
+        Message::from_json(include_str!("../../test/chat/text_hello_world.json")).unwrap()
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_serialize_translate_opped_steve() {
+fn test_serialize_translate_opped_steve() {
     let with = vec![Message::new(Payload::text("Steve"))];
     let message = Message::new(Payload::translation("Opped %s", with));
 
     assert_eq!(
         message.to_json().unwrap(),
-            include_str!("../test/chat/translate_opped_steve.json")
+        include_str!("../../test/chat/translate_opped_steve.json")
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_deserialize_translate_opped_steve() {
+fn test_deserialize_translate_opped_steve() {
     let with = vec![Message::new(Payload::text("Steve"))];
     let expected_message = Message::new(Payload::translation("Opped %s", with));
 
     assert_eq!(
         expected_message,
-            Message::from_json(include_str!("../test/chat/translate_opped_steve.json")).unwrap()
+        Message::from_json(include_str!("../../test/chat/translate_opped_steve.json")).unwrap()
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_serialize_keybind_jump() {
+fn test_serialize_keybind_jump() {
     let message = MessageBuilder::builder(Payload::text("Press \""))
         .color(Color::Yellow)
         .bold(true)
@@ -504,12 +507,12 @@ mod tests {
 
     assert_eq!(
         message.to_json().unwrap(),
-            include_str!("../test/chat/keybind_jump.json")
+        include_str!("../../test/chat/keybind_jump.json")
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_deserialize_keybind_jump() {
+fn test_deserialize_keybind_jump() {
     let expected_message = MessageBuilder::builder(Payload::text("Press \""))
         .color(Color::Yellow)
         .bold(true)
@@ -522,12 +525,12 @@ mod tests {
 
     assert_eq!(
         expected_message,
-            Message::from_json(include_str!("../test/chat/keybind_jump.json")).unwrap()
+        Message::from_json(include_str!("../../test/chat/keybind_jump.json")).unwrap()
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_serialize_click_open_url() {
+fn test_serialize_click_open_url() {
     let message = MessageBuilder::builder(Payload::text("click me"))
         .color(Color::Yellow)
         .bold(true)
@@ -536,12 +539,12 @@ mod tests {
 
     assert_eq!(
         message.to_json().unwrap(),
-            include_str!("../test/chat/click_open_url.json")
+        include_str!("../../test/chat/click_open_url.json")
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_deserialize_click_open_url() {
+fn test_deserialize_click_open_url() {
     let expected_message = MessageBuilder::builder(Payload::text("click me"))
         .color(Color::Yellow)
         .bold(true)
@@ -550,12 +553,12 @@ mod tests {
 
     assert_eq!(
         expected_message,
-            Message::from_json(include_str!("../test/chat/click_open_url.json")).unwrap()
+        Message::from_json(include_str!("../../test/chat/click_open_url.json")).unwrap()
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_serialize_click_run_command() {
+fn test_serialize_click_run_command() {
     let message = MessageBuilder::builder(Payload::text("click me"))
         .color(Color::LightPurple)
         .italic(true)
@@ -564,12 +567,12 @@ mod tests {
 
     assert_eq!(
         message.to_json().unwrap(),
-            include_str!("../test/chat/click_run_command.json")
+        include_str!("../../test/chat/click_run_command.json")
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_deserialize_click_run_command() {
+fn test_deserialize_click_run_command() {
     let expected_message = MessageBuilder::builder(Payload::text("click me"))
         .color(Color::LightPurple)
         .italic(true)
@@ -578,12 +581,12 @@ mod tests {
 
     assert_eq!(
         expected_message,
-            Message::from_json(include_str!("../test/chat/click_run_command.json")).unwrap()
+        Message::from_json(include_str!("../../test/chat/click_run_command.json")).unwrap()
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_serialize_click_suggest_command() {
+fn test_serialize_click_suggest_command() {
     let message = MessageBuilder::builder(Payload::text("click me"))
         .color(Color::Blue)
         .obfuscated(true)
@@ -592,12 +595,12 @@ mod tests {
 
     assert_eq!(
         message.to_json().unwrap(),
-            include_str!("../test/chat/click_suggest_command.json")
+        include_str!("../../test/chat/click_suggest_command.json")
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_deserialize_click_suggest_command() {
+fn test_deserialize_click_suggest_command() {
     let expected_message = MessageBuilder::builder(Payload::text("click me"))
         .color(Color::Blue)
         .obfuscated(true)
@@ -606,12 +609,12 @@ mod tests {
 
     assert_eq!(
         expected_message,
-            Message::from_json(include_str!("../test/chat/click_suggest_command.json")).unwrap()
+        Message::from_json(include_str!("../../test/chat/click_suggest_command.json")).unwrap()
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_serialize_click_change_page() {
+fn test_serialize_click_change_page() {
     let message = MessageBuilder::builder(Payload::text("click me"))
         .color(Color::DarkGray)
         .underlined(true)
@@ -620,12 +623,12 @@ mod tests {
 
     assert_eq!(
         message.to_json().unwrap(),
-            include_str!("../test/chat/click_change_page.json")
+        include_str!("../../test/chat/click_change_page.json")
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_deserialize_click_change_page() {
+fn test_deserialize_click_change_page() {
     let expected_message = MessageBuilder::builder(Payload::text("click me"))
         .color(Color::DarkGray)
         .underlined(true)
@@ -634,12 +637,12 @@ mod tests {
 
     assert_eq!(
         expected_message,
-            Message::from_json(include_str!("../test/chat/click_change_page.json")).unwrap()
+        Message::from_json(include_str!("../../test/chat/click_change_page.json")).unwrap()
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_serialize_hover_show_text() {
+fn test_serialize_hover_show_text() {
     let message = MessageBuilder::builder(Payload::text("hover at me"))
         .color(Color::DarkPurple)
         .bold(true)
@@ -648,12 +651,12 @@ mod tests {
 
     assert_eq!(
         message.to_json().unwrap(),
-            include_str!("../test/chat/hover_show_text.json")
+        include_str!("../../test/chat/hover_show_text.json")
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_deserialize_hover_show_text() {
+fn test_deserialize_hover_show_text() {
     let expected_message = MessageBuilder::builder(Payload::text("hover at me"))
         .color(Color::DarkPurple)
         .bold(true)
@@ -662,12 +665,12 @@ mod tests {
 
     assert_eq!(
         expected_message,
-            Message::from_json(include_str!("../test/chat/hover_show_text.json")).unwrap()
+        Message::from_json(include_str!("../../test/chat/hover_show_text.json")).unwrap()
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_serialize_hover_show_item() {
+fn test_serialize_hover_show_item() {
     let message = MessageBuilder::builder(Payload::text("hover at me"))
         .color(Color::DarkRed)
         .italic(true)
@@ -676,12 +679,12 @@ mod tests {
 
     assert_eq!(
         message.to_json().unwrap(),
-            include_str!("../test/chat/hover_show_item.json")
+        include_str!("../../test/chat/hover_show_item.json")
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_deserialize_hover_show_item() {
+fn test_deserialize_hover_show_item() {
     let expected_message = MessageBuilder::builder(Payload::text("hover at me"))
         .color(Color::DarkRed)
         .italic(true)
@@ -690,12 +693,12 @@ mod tests {
 
     assert_eq!(
         expected_message,
-            Message::from_json(include_str!("../test/chat/hover_show_item.json")).unwrap()
+        Message::from_json(include_str!("../../test/chat/hover_show_item.json")).unwrap()
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_serialize_hover_show_entity() {
+fn test_serialize_hover_show_entity() {
     let message = MessageBuilder::builder(Payload::text("hover at me"))
         .color(Color::DarkAqua)
         .obfuscated(true)
@@ -704,12 +707,12 @@ mod tests {
 
     assert_eq!(
         message.to_json().unwrap(),
-            include_str!("../test/chat/hover_show_entity.json")
+        include_str!("../../test/chat/hover_show_entity.json")
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_deserialize_hover_show_entity() {
+fn test_deserialize_hover_show_entity() {
     let expected_message = MessageBuilder::builder(Payload::text("hover at me"))
         .color(Color::DarkAqua)
         .obfuscated(true)
@@ -718,31 +721,30 @@ mod tests {
 
     assert_eq!(
         expected_message,
-            Message::from_json(include_str!("../test/chat/hover_show_entity.json")).unwrap()
+        Message::from_json(include_str!("../../test/chat/hover_show_entity.json")).unwrap()
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_serialize_hex_color() {
+fn test_serialize_hex_color() {
     let message = MessageBuilder::builder(Payload::text("Hello"))
         .color(Color::Hex("#ffffff".into()))
         .build();
 
     assert_eq!(
         message.to_json().unwrap(),
-            include_str!("../test/chat/hex_color.json")
+        include_str!("../../test/chat/hex_color.json")
     );
-    }
+}
 
-    #[test]
+#[test]
-    fn test_deserialize_hex_color() {
+fn test_deserialize_hex_color() {
     let expected_message = MessageBuilder::builder(Payload::text("Hello"))
         .color(Color::Hex("#ffffff".into()))
         .build();
 
     assert_eq!(
-            Message::from_json(include_str!("../test/chat/hex_color.json")).unwrap(),
+        Message::from_json(include_str!("../../test/chat/hex_color.json")).unwrap(),
         expected_message
     );
-    }
 }

protocol/src/data/server_status.rs

@@ -1,29 +1,33 @@
 use crate::data::chat::Message;
+use crate::impl_json_encoder_decoder;
 use serde::{Deserialize, Serialize};
 use uuid::Uuid;
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Clone, Serialize, Deserialize, Debug)]
 pub struct ServerStatus {
     pub version: ServerVersion,
     pub players: OnlinePlayers,
     pub description: Message,
 }
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Clone, Serialize, Deserialize, Debug)]
 pub struct ServerVersion {
     pub name: String,
     pub protocol: u32,
 }
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Clone, Serialize, Deserialize, Debug)]
 pub struct OnlinePlayers {
     pub max: u32,
     pub online: u32,
+    #[serde(default)]
     pub sample: Vec<OnlinePlayer>,
 }
 
-#[derive(Serialize, Deserialize, Debug, Eq, PartialEq)]
+#[derive(Clone, Serialize, Deserialize, Debug, Eq, PartialEq)]
 pub struct OnlinePlayer {
     pub name: String,
     pub id: Uuid,
 }
+
+impl_json_encoder_decoder!(ServerStatus);

protocol/src/decoder.rs

@@ -1,7 +1,6 @@
 use crate::error::DecodeError;
 use byteorder::{BigEndian, ReadBytesExt};
 use nbt::CompoundTag;
-use num_traits::FromPrimitive;
 use std::io::Read;
 use uuid::Uuid;
 
@@ -12,15 +11,13 @@ pub trait Decoder {
 }
 
 /// Trait adds additional helper methods for `Read` to read protocol data.
-trait DecoderReadExt {
+pub trait DecoderReadExt {
     fn read_bool(&mut self) -> Result<bool, DecodeError>;
 
     fn read_string(&mut self, max_length: u16) -> Result<String, DecodeError>;
 
     fn read_byte_array(&mut self) -> Result<Vec<u8>, DecodeError>;
 
-    fn read_enum<T: FromPrimitive>(&mut self) -> Result<T, DecodeError>;
-
     fn read_compound_tag(&mut self) -> Result<CompoundTag, DecodeError>;
 
     fn read_var_i32(&mut self) -> Result<i32, DecodeError>;
@@ -86,13 +83,6 @@ impl<R: Read> DecoderReadExt for R {
         Ok(buf)
     }
 
-    fn read_enum<T: FromPrimitive>(&mut self) -> Result<T, DecodeError> {
-        let type_id = self.read_u8()?;
-        let result = FromPrimitive::from_u8(type_id);
-
-        result.ok_or_else(|| DecodeError::UnknownEnumType { type_id })
-    }
-
     fn read_compound_tag(&mut self) -> Result<CompoundTag, DecodeError> {
         Ok(nbt::decode::read_compound_tag(self)?)
     }
@@ -157,6 +147,22 @@ impl Decoder for u64 {
     }
 }
 
+impl Decoder for f32 {
+    type Output = Self;
+
+    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
+        Ok(reader.read_f32::<BigEndian>()?)
+    }
+}
+
+impl Decoder for f64 {
+    type Output = Self;
+
+    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
+        Ok(reader.read_f64::<BigEndian>()?)
+    }
+}
+
 impl Decoder for String {
     type Output = Self;
 
@@ -216,7 +222,7 @@ impl Decoder for Vec<CompoundTag> {
     }
 }
 
-mod var_int {
+pub mod var_int {
     use crate::decoder::DecoderReadExt;
     use crate::error::DecodeError;
     use std::io::Read;
@@ -226,7 +232,7 @@ mod var_int {
     }
 }
 
-mod var_long {
+pub mod var_long {
     use crate::decoder::DecoderReadExt;
     use crate::error::DecodeError;
     use std::io::Read;
@@ -236,7 +242,7 @@ mod var_long {
     }
 }
 
-mod rest {
+pub mod rest {
     use crate::error::DecodeError;
     use std::io::Read;
 
@@ -248,7 +254,7 @@ mod rest {
     }
 }
 
-mod uuid_hyp_str {
+pub mod uuid_hyp_str {
     use crate::decoder::DecoderReadExt;
     use crate::error::DecodeError;
     use std::io::Read;

protocol/src/encoder.rs

@@ -1,7 +1,6 @@
 use crate::error::EncodeError;
 use byteorder::{BigEndian, WriteBytesExt};
 use nbt::CompoundTag;
-use num_traits::ToPrimitive;
 use std::io::Write;
 use uuid::Uuid;
 
@@ -10,15 +9,13 @@ pub trait Encoder {
 }
 
 /// Trait adds additional helper methods for `Write` to write protocol data.
-trait EncoderWriteExt {
+pub trait EncoderWriteExt {
     fn write_bool(&mut self, value: bool) -> Result<(), EncodeError>;
 
     fn write_string(&mut self, value: &str, max_length: u16) -> Result<(), EncodeError>;
 
     fn write_byte_array(&mut self, value: &[u8]) -> Result<(), EncodeError>;
 
-    fn write_enum<T: ToPrimitive>(&mut self, value: &T) -> Result<(), EncodeError>;
-
     fn write_compound_tag(&mut self, value: &CompoundTag) -> Result<(), EncodeError>;
 
     fn write_var_i32(&mut self, value: i32) -> Result<(), EncodeError>;
@@ -80,15 +77,8 @@ impl<W: Write> EncoderWriteExt for W {
         Ok(())
     }
 
-    fn write_enum<T: ToPrimitive>(&mut self, value: &T) -> Result<(), EncodeError> {
-        let type_value = ToPrimitive::to_u8(value).unwrap();
-        self.write_u8(type_value)?;
-
-        Ok(())
-    }
-
     fn write_compound_tag(&mut self, value: &CompoundTag) -> Result<(), EncodeError> {
-        nbt::encode::write_compound_tag(self, value.clone())?;
+        nbt::encode::write_compound_tag(self, &value)?;
 
         Ok(())
     }
@@ -139,6 +129,18 @@ impl Encoder for u64 {
     }
 }
 
+impl Encoder for f32 {
+    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
+        Ok(writer.write_f32::<BigEndian>(*self)?)
+    }
+}
+
+impl Encoder for f64 {
+    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
+        Ok(writer.write_f64::<BigEndian>(*self)?)
+    }
+}
+
 impl Encoder for String {
     fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
         Ok(writer.write_string(self, 32_768)?)
@@ -181,7 +183,7 @@ impl Encoder for Vec<CompoundTag> {
     }
 }
 
-mod var_int {
+pub mod var_int {
     use crate::encoder::EncoderWriteExt;
     use crate::error::EncodeError;
     use std::io::Write;
@@ -193,7 +195,7 @@ mod var_int {
     }
 }
 
-mod var_long {
+pub mod var_long {
     use crate::encoder::EncoderWriteExt;
     use crate::error::EncodeError;
     use std::io::Write;
@@ -205,7 +207,7 @@ mod var_long {
     }
 }
 
-mod rest {
+pub mod rest {
     use crate::error::EncodeError;
     use std::io::Write;
 
@@ -216,7 +218,7 @@ mod rest {
     }
 }
 
-mod uuid_hyp_str {
+pub mod uuid_hyp_str {
     use crate::encoder::EncoderWriteExt;
     use crate::error::EncodeError;
     use std::io::Write;

protocol/src/error.rs

@@ -65,7 +65,7 @@ pub enum DecodeError {
     },
     /// Type id was not parsed as valid enum value.
     UnknownEnumType {
-        type_id: u8,
+        type_id: usize,
     },
     TagDecodeError {
         tag_decode_error: TagDecodeError,

protocol/src/lib.rs

@@ -1,8 +1,35 @@
 //! This crate implements Minecraft protocol.
 //!
 //! Information about protocol can be found at https://wiki.vg/Protocol.
-#[cfg(feature = "data")]
 pub mod data;
 pub mod decoder;
 pub mod encoder;
 pub mod error;
+pub mod version;
+
+/// Protocol limits maximum string length.
+const STRING_MAX_LENGTH: u16 = 32_768;
+
+#[macro_export]
+macro_rules! impl_json_encoder_decoder (
+    ($ty: ident) => (
+        impl crate::encoder::Encoder for $ty {
+            fn encode<W: std::io::Write>(&self, writer: &mut W) -> Result<(), crate::error::EncodeError> {
+                let json = serde_json::to_string(self)?;
+                crate::encoder::EncoderWriteExt::write_string(writer, &json, crate::STRING_MAX_LENGTH)?;
+
+                Ok(())
+            }
+        }
+
+        impl crate::decoder::Decoder for $ty {
+            type Output = Self;
+
+            fn decode<R: std::io::Read>(reader: &mut R) -> Result<Self::Output, crate::error::DecodeError> {
+                let json = crate::decoder::DecoderReadExt::read_string(reader, crate::STRING_MAX_LENGTH)?;
+
+                Ok(serde_json::from_str(&json)?)
+            }
+        }
+   );
+);

protocol/src/version/mod.rs

@@ -0,0 +1 @@
+pub mod v1_14_4;

protocol/src/version/v1_14_4/game.rs

@@ -0,0 +1,734 @@
+use crate::data::chat::Message;
+use crate::decoder::Decoder;
+use crate::decoder::DecoderReadExt;
+use crate::encoder::EncoderWriteExt;
+use crate::error::DecodeError;
+use byteorder::{ReadBytesExt, WriteBytesExt};
+use minecraft_protocol_derive::{Decoder, Encoder};
+use nbt::CompoundTag;
+use std::io::Read;
+use uuid::Uuid;
+
+pub enum GameServerBoundPacket {
+    ServerBoundChatMessage(ServerBoundChatMessage),
+    ServerBoundKeepAlive(ServerBoundKeepAlive),
+    ServerBoundAbilities(ServerBoundAbilities),
+}
+
+pub enum GameClientBoundPacket {
+    ClientBoundChatMessage(ClientBoundChatMessage),
+    JoinGame(JoinGame),
+    ClientBoundKeepAlive(ClientBoundKeepAlive),
+    ChunkData(ChunkData),
+    GameDisconnect(GameDisconnect),
+    BossBar(BossBar),
+    EntityAction(EntityAction),
+}
+
+impl GameServerBoundPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            GameServerBoundPacket::ServerBoundChatMessage(_) => 0x03,
+            GameServerBoundPacket::ServerBoundKeepAlive(_) => 0x0F,
+            GameServerBoundPacket::ServerBoundAbilities(_) => 0x19,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x03 => {
+                let chat_message = ServerBoundChatMessage::decode(reader)?;
+
+                Ok(GameServerBoundPacket::ServerBoundChatMessage(chat_message))
+            }
+            0x0F => {
+                let keep_alive = ServerBoundKeepAlive::decode(reader)?;
+
+                Ok(GameServerBoundPacket::ServerBoundKeepAlive(keep_alive))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+}
+
+impl GameClientBoundPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            GameClientBoundPacket::ClientBoundChatMessage(_) => 0x0E,
+            GameClientBoundPacket::GameDisconnect(_) => 0x1A,
+            GameClientBoundPacket::ClientBoundKeepAlive(_) => 0x20,
+            GameClientBoundPacket::ChunkData(_) => 0x21,
+            GameClientBoundPacket::JoinGame(_) => 0x25,
+            GameClientBoundPacket::BossBar(_) => 0x0D,
+            GameClientBoundPacket::EntityAction(_) => 0x1B,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x0E => {
+                let chat_message = ClientBoundChatMessage::decode(reader)?;
+
+                Ok(GameClientBoundPacket::ClientBoundChatMessage(chat_message))
+            }
+            0x1A => {
+                let game_disconnect = GameDisconnect::decode(reader)?;
+
+                Ok(GameClientBoundPacket::GameDisconnect(game_disconnect))
+            }
+            0x20 => {
+                let keep_alive = ClientBoundKeepAlive::decode(reader)?;
+
+                Ok(GameClientBoundPacket::ClientBoundKeepAlive(keep_alive))
+            }
+            0x21 => {
+                let chunk_data = ChunkData::decode(reader)?;
+
+                Ok(GameClientBoundPacket::ChunkData(chunk_data))
+            }
+            0x25 => {
+                let join_game = JoinGame::decode(reader)?;
+
+                Ok(GameClientBoundPacket::JoinGame(join_game))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+}
+
+#[derive(Encoder, Decoder, Debug)]
+pub struct ServerBoundChatMessage {
+    #[data_type(max_length = 256)]
+    pub message: String,
+}
+
+impl ServerBoundChatMessage {
+    pub fn new(message: String) -> GameServerBoundPacket {
+        let chat_message = ServerBoundChatMessage { message };
+
+        GameServerBoundPacket::ServerBoundChatMessage(chat_message)
+    }
+}
+
+#[derive(Encoder, Decoder, Debug)]
+pub struct ClientBoundChatMessage {
+    pub message: Message,
+    pub position: MessagePosition,
+}
+
+#[derive(Encoder, Decoder, Debug, Eq, PartialEq)]
+pub enum MessagePosition {
+    Chat,
+    System,
+    HotBar,
+}
+
+impl ClientBoundChatMessage {
+    pub fn new(message: Message, position: MessagePosition) -> GameClientBoundPacket {
+        let chat_message = ClientBoundChatMessage { message, position };
+
+        GameClientBoundPacket::ClientBoundChatMessage(chat_message)
+    }
+}
+
+#[derive(Encoder, Decoder, Debug)]
+pub struct JoinGame {
+    pub entity_id: u32,
+    pub game_mode: GameMode,
+    pub dimension: i32,
+    pub max_players: u8,
+    #[data_type(max_length = 16)]
+    pub level_type: String,
+    #[data_type(with = "var_int")]
+    pub view_distance: i32,
+    pub reduced_debug_info: bool,
+}
+
+#[derive(Encoder, Decoder, Debug, Eq, PartialEq)]
+pub enum GameMode {
+    Survival = 0,
+    Creative = 1,
+    Adventure = 2,
+    Spectator = 3,
+    Hardcore = 8,
+}
+
+impl JoinGame {
+    pub fn new(
+        entity_id: u32,
+        game_mode: GameMode,
+        dimension: i32,
+        max_players: u8,
+        level_type: String,
+        view_distance: i32,
+        reduced_debug_info: bool,
+    ) -> GameClientBoundPacket {
+        let join_game = JoinGame {
+            entity_id,
+            game_mode,
+            dimension,
+            max_players,
+            level_type,
+            view_distance,
+            reduced_debug_info,
+        };
+
+        GameClientBoundPacket::JoinGame(join_game)
+    }
+}
+
+#[derive(Encoder, Decoder)]
+pub struct ServerBoundKeepAlive {
+    pub id: u64,
+}
+
+impl ServerBoundKeepAlive {
+    pub fn new(id: u64) -> GameServerBoundPacket {
+        let keep_alive = ServerBoundKeepAlive { id };
+
+        GameServerBoundPacket::ServerBoundKeepAlive(keep_alive)
+    }
+}
+
+#[derive(Encoder, Decoder)]
+pub struct ClientBoundKeepAlive {
+    pub id: u64,
+}
+
+impl ClientBoundKeepAlive {
+    pub fn new(id: u64) -> GameClientBoundPacket {
+        let keep_alive = ClientBoundKeepAlive { id };
+
+        GameClientBoundPacket::ClientBoundKeepAlive(keep_alive)
+    }
+}
+
+#[derive(Encoder, Decoder, Debug)]
+pub struct ChunkData {
+    pub x: i32,
+    pub z: i32,
+    pub full: bool,
+    #[data_type(with = "var_int")]
+    pub primary_mask: i32,
+    pub heights: CompoundTag,
+    pub data: Vec<u8>,
+    pub tiles: Vec<CompoundTag>,
+}
+
+impl ChunkData {
+    pub fn new(
+        x: i32,
+        z: i32,
+        full: bool,
+        primary_mask: i32,
+        heights: CompoundTag,
+        data: Vec<u8>,
+        tiles: Vec<CompoundTag>,
+    ) -> GameClientBoundPacket {
+        let chunk_data = ChunkData {
+            x,
+            z,
+            full,
+            primary_mask,
+            heights,
+            data,
+            tiles,
+        };
+
+        GameClientBoundPacket::ChunkData(chunk_data)
+    }
+}
+
+#[derive(Encoder, Decoder, Debug)]
+pub struct GameDisconnect {
+    pub reason: Message,
+}
+
+impl GameDisconnect {
+    pub fn new(reason: Message) -> GameClientBoundPacket {
+        let game_disconnect = GameDisconnect { reason };
+
+        GameClientBoundPacket::GameDisconnect(game_disconnect)
+    }
+}
+
+#[derive(Encoder, Decoder, Debug, PartialEq)]
+pub struct BossBar {
+    pub id: Uuid,
+    pub action: BossBarAction,
+}
+
+#[derive(Encoder, Decoder, Debug, PartialEq)]
+pub enum BossBarAction {
+    Add {
+        title: Message,
+        health: f32,
+        color: BossBarColor,
+        division: BossBarDivision,
+        flags: u8,
+    },
+    Remove,
+    UpdateHealth {
+        health: f32,
+    },
+    UpdateTitle {
+        title: Message,
+    },
+    UpdateStyle {
+        color: BossBarColor,
+        division: BossBarDivision,
+    },
+    UpdateFlags {
+        flags: u8,
+    },
+}
+
+#[derive(Encoder, Decoder, Debug, PartialEq)]
+pub enum BossBarColor {
+    Pink,
+    Blue,
+    Red,
+    Green,
+    Yellow,
+    Purple,
+    White,
+}
+
+#[derive(Encoder, Decoder, Debug, PartialEq)]
+pub enum BossBarDivision {
+    None,
+    Notches6,
+    Notches10,
+    Notches12,
+    Notches20,
+}
+
+impl BossBar {
+    pub fn new(id: Uuid, action: BossBarAction) -> GameClientBoundPacket {
+        let boss_bar = BossBar { id, action };
+
+        GameClientBoundPacket::BossBar(boss_bar)
+    }
+}
+
+#[derive(Encoder, Decoder, Debug, PartialEq)]
+pub struct EntityAction {
+    #[data_type(with = "var_int")]
+    pub entity_id: i32,
+    pub action_id: EntityActionId,
+    #[data_type(with = "var_int")]
+    pub jump_boost: i32,
+}
+
+#[derive(Encoder, Decoder, Debug, PartialEq)]
+#[data_type(with = "var_int")]
+pub enum EntityActionId {
+    StartSneaking,
+    StopSneaking,
+    LeaveBad,
+    StartSprinting,
+    StopSprinting,
+    StartJumpWithHorse,
+    StopJumpWithHorse,
+    OpenHorseInventory,
+    StartFlyingWithElytra,
+}
+
+#[derive(Encoder, Decoder, Debug, PartialEq)]
+pub struct ServerBoundAbilities {
+    #[data_type(bitfield)]
+    pub invulnerable: bool,
+    #[data_type(bitfield)]
+    pub allow_flying: bool,
+    #[data_type(bitfield)]
+    pub flying: bool,
+    #[data_type(bitfield)]
+    pub creative_mode: bool,
+    pub fly_speed: f32,
+    pub walk_speed: f32,
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::data::chat::Payload;
+    use crate::decoder::Decoder;
+    use crate::encoder::Encoder;
+    use crate::encoder::EncoderWriteExt;
+    use crate::error::{DecodeError, EncodeError};
+    use crate::version::v1_14_4::game::*;
+    use crate::STRING_MAX_LENGTH;
+    use nbt::CompoundTag;
+    use std::io::Cursor;
+    use std::str::FromStr;
+
+    #[test]
+    fn test_server_bound_chat_message_encode() {
+        let chat_message = ServerBoundChatMessage {
+            message: String::from("hello server!"),
+        };
+
+        let mut vec = Vec::new();
+        chat_message.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/game/server_bound_chat_message.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_server_bound_chat_message_decode() {
+        let mut cursor = Cursor::new(
+            include_bytes!("../../../test/packet/game/server_bound_chat_message.dat").to_vec(),
+        );
+        let chat_message = ServerBoundChatMessage::decode(&mut cursor).unwrap();
+
+        assert_eq!(chat_message.message, "hello server!");
+    }
+
+    #[test]
+    fn test_server_bound_chat_message_encode_invalid_length() {
+        let chat_message = ServerBoundChatMessage {
+            message: "abc".repeat(100),
+        };
+
+        let mut vec = Vec::new();
+
+        let encode_error = chat_message
+            .encode(&mut vec)
+            .err()
+            .expect("Expected error `StringTooLong` because message has invalid length");
+
+        match encode_error {
+            EncodeError::StringTooLong { length, max_length } => {
+                assert_eq!(length, 300);
+                assert_eq!(max_length, 256);
+            }
+            _ => panic!("Expected `StringTooLong` but got `{:?}`", encode_error),
+        }
+    }
+
+    #[test]
+    fn test_server_bound_chat_message_decode_invalid_length() {
+        let message = "abc".repeat(100);
+
+        let mut vec = Vec::new();
+        vec.write_string(&message, STRING_MAX_LENGTH).unwrap();
+
+        let mut cursor = Cursor::new(vec);
+
+        let decode_error = ServerBoundChatMessage::decode(&mut cursor)
+            .err()
+            .expect("Expected error `StringTooLong` because message has invalid length");
+
+        match decode_error {
+            DecodeError::StringTooLong { length, max_length } => {
+                assert_eq!(length, 300);
+                assert_eq!(max_length, 256);
+            }
+            _ => panic!("Expected `StringTooLong` but got `{:?}`", decode_error),
+        }
+    }
+
+    #[test]
+    fn test_client_bound_chat_message_encode() {
+        let chat_message = ClientBoundChatMessage {
+            message: Message::new(Payload::text("hello client!")),
+            position: MessagePosition::System,
+        };
+
+        let mut vec = Vec::new();
+        chat_message.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/game/client_bound_chat_message.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_client_bound_chat_message_decode() {
+        let mut cursor = Cursor::new(
+            include_bytes!("../../../test/packet/game/client_bound_chat_message.dat").to_vec(),
+        );
+        let chat_message = ClientBoundChatMessage::decode(&mut cursor).unwrap();
+
+        assert_eq!(
+            chat_message.message,
+            Message::new(Payload::text("hello client!"))
+        );
+
+        assert_eq!(chat_message.position, MessagePosition::System);
+    }
+
+    #[test]
+    fn test_server_bound_keep_alive_encode() {
+        let keep_alive = ServerBoundKeepAlive { id: 31122019 };
+
+        let mut vec = Vec::new();
+        keep_alive.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/game/server_bound_keep_alive.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_server_bound_keep_alive_decode() {
+        let mut cursor = Cursor::new(
+            include_bytes!("../../../test/packet/game/server_bound_keep_alive.dat").to_vec(),
+        );
+        let keep_alive = ServerBoundKeepAlive::decode(&mut cursor).unwrap();
+
+        assert_eq!(keep_alive.id, 31122019);
+    }
+
+    #[test]
+    fn test_client_bound_keep_alive_encode() {
+        let keep_alive = ClientBoundKeepAlive { id: 240714 };
+
+        let mut vec = Vec::new();
+        keep_alive.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/game/client_bound_keep_alive.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_client_bound_keep_alive_decode() {
+        let mut cursor = Cursor::new(
+            include_bytes!("../../../test/packet/game/client_bound_keep_alive.dat").to_vec(),
+        );
+        let keep_alive = ClientBoundKeepAlive::decode(&mut cursor).unwrap();
+
+        assert_eq!(keep_alive.id, 240714);
+    }
+
+    #[test]
+    fn test_join_game_encode() {
+        let join_game = JoinGame {
+            entity_id: 27,
+            game_mode: GameMode::Hardcore,
+            dimension: 23,
+            max_players: 100,
+            level_type: String::from("default"),
+            view_distance: 10,
+            reduced_debug_info: true,
+        };
+
+        let mut vec = Vec::new();
+        join_game.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/game/join_game.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_join_game_decode() {
+        let mut cursor =
+            Cursor::new(include_bytes!("../../../test/packet/game/join_game.dat").to_vec());
+        let join_game = JoinGame::decode(&mut cursor).unwrap();
+
+        assert_eq!(join_game.entity_id, 27);
+        assert_eq!(join_game.game_mode, GameMode::Hardcore);
+        assert_eq!(join_game.dimension, 23);
+        assert_eq!(join_game.max_players, 100);
+        assert_eq!(join_game.level_type, String::from("default"));
+        assert_eq!(join_game.view_distance, 10);
+        assert!(join_game.reduced_debug_info);
+    }
+
+    #[test]
+    fn test_chunk_data_encode() {
+        let chunk_data = ChunkData {
+            x: -2,
+            z: 5,
+            full: true,
+            primary_mask: 65535,
+            heights: CompoundTag::named("HeightMaps"),
+            data: vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
+            tiles: vec![CompoundTag::named("TileEntity")],
+        };
+
+        let mut vec = Vec::new();
+        chunk_data.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/game/chunk_data.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_chunk_data_decode() {
+        let mut cursor =
+            Cursor::new(include_bytes!("../../../test/packet/game/chunk_data.dat").to_vec());
+        let chunk_data = ChunkData::decode(&mut cursor).unwrap();
+
+        assert_eq!(chunk_data.x, -2);
+        assert_eq!(chunk_data.z, 5);
+        assert!(chunk_data.full);
+        assert_eq!(chunk_data.heights.name, Some(String::from("HeightMaps")));
+        assert_eq!(chunk_data.data, vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
+        assert_eq!(chunk_data.primary_mask, 65535);
+        assert_eq!(chunk_data.tiles[0].name, Some(String::from("TileEntity")));
+    }
+
+    #[test]
+    fn test_game_disconnect_encode() {
+        let game_disconnect = GameDisconnect {
+            reason: Message::new(Payload::text("Message")),
+        };
+
+        let mut vec = Vec::new();
+        game_disconnect.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/game/game_disconnect.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_game_disconnect_decode() {
+        let mut cursor =
+            Cursor::new(include_bytes!("../../../test/packet/game/game_disconnect.dat").to_vec());
+        let game_disconnect = GameDisconnect::decode(&mut cursor).unwrap();
+
+        assert_eq!(
+            game_disconnect.reason,
+            Message::new(Payload::text("Message"))
+        );
+    }
+
+    #[test]
+    fn test_boss_bar_add_encode() {
+        let boss_bar_add = create_boss_bar_add_packet();
+
+        let mut vec = Vec::new();
+        boss_bar_add.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/game/boss_bar_add.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_boss_bar_add_decode() {
+        let mut cursor =
+            Cursor::new(include_bytes!("../../../test/packet/game/boss_bar_add.dat").to_vec());
+        let boss_bar_add = BossBar::decode(&mut cursor).unwrap();
+
+        assert_eq!(boss_bar_add, create_boss_bar_add_packet());
+    }
+
+    fn create_boss_bar_add_packet() -> BossBar {
+        BossBar {
+            id: Uuid::from_str("afa32ac8-d3bf-47f3-99eb-294d60b3dca2").unwrap(),
+            action: BossBarAction::Add {
+                title: Message::from_str("Boss title"),
+                health: 123.45,
+                color: BossBarColor::Yellow,
+                division: BossBarDivision::Notches10,
+                flags: 7,
+            },
+        }
+    }
+
+    #[test]
+    fn test_boss_bar_remove_encode() {
+        let boss_bar_remove = create_boss_bar_remove_packet();
+
+        let mut vec = Vec::new();
+        boss_bar_remove.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/game/boss_bar_remove.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_boss_bar_remove_decode() {
+        let mut cursor =
+            Cursor::new(include_bytes!("../../../test/packet/game/boss_bar_remove.dat").to_vec());
+        let boss_bar_remove = BossBar::decode(&mut cursor).unwrap();
+
+        assert_eq!(boss_bar_remove, create_boss_bar_remove_packet());
+    }
+
+    fn create_boss_bar_remove_packet() -> BossBar {
+        BossBar {
+            id: Uuid::from_str("afa32ac8-d3bf-47f3-99eb-294d60b3dca2").unwrap(),
+            action: BossBarAction::Remove,
+        }
+    }
+
+    #[test]
+    fn test_entity_action_encode() {
+        let entity_action = EntityAction {
+            entity_id: 12345,
+            action_id: EntityActionId::StartFlyingWithElytra,
+            jump_boost: i32::MAX,
+        };
+
+        let mut vec = Vec::new();
+        entity_action.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/game/entity_action.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_entity_action_decode() {
+        let mut cursor =
+            Cursor::new(include_bytes!("../../../test/packet/game/entity_action.dat").to_vec());
+        let entity_action = EntityAction::decode(&mut cursor).unwrap();
+
+        assert_eq!(
+            entity_action,
+            EntityAction {
+                entity_id: 12345,
+                action_id: EntityActionId::StartFlyingWithElytra,
+                jump_boost: i32::MAX,
+            }
+        );
+    }
+
+    #[test]
+    fn test_serverbound_abilities_encode() {
+        let abilities = ServerBoundAbilities {
+            invulnerable: true,
+            flying: true,
+            allow_flying: false,
+            creative_mode: true,
+            fly_speed: 0.0,
+            walk_speed: 0.0,
+        };
+
+        let mut vec = Vec::new();
+        abilities.encode(&mut vec).unwrap();
+
+        assert_eq!(vec, [13, 0, 0, 0, 0, 0, 0, 0, 0]);
+    }
+
+    #[test]
+    fn test_serverbound_abilities_decode() {
+        let vec = [13, 0, 0, 0, 0, 0, 0, 0, 0].to_vec();
+        let mut cursor = Cursor::new(vec);
+
+        let abilities = ServerBoundAbilities::decode(&mut cursor).unwrap();
+        assert!(abilities.invulnerable);
+        assert!(!abilities.allow_flying);
+        assert!(abilities.flying);
+        assert!(abilities.creative_mode);
+    }
+}

protocol/src/version/v1_14_4/handshake.rs

@@ -0,0 +1,55 @@
+use crate::decoder::Decoder;
+use crate::error::DecodeError;
+use minecraft_protocol_derive::{Decoder, Encoder};
+use std::io::Read;
+
+pub enum HandshakeServerBoundPacket {
+    Handshake(Handshake),
+}
+
+impl HandshakeServerBoundPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            HandshakeServerBoundPacket::Handshake(_) => 0x00,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let handshake = Handshake::decode(reader)?;
+                Ok(HandshakeServerBoundPacket::Handshake(handshake))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+}
+
+#[derive(Encoder, Decoder, Debug)]
+pub struct Handshake {
+    #[data_type(with = "var_int")]
+    pub protocol_version: i32,
+    #[data_type(max_length = 255)]
+    pub server_addr: String,
+    pub server_port: u16,
+    #[data_type(with = "var_int")]
+    pub next_state: i32,
+}
+
+impl Handshake {
+    pub fn new(
+        protocol_version: i32,
+        server_addr: String,
+        server_port: u16,
+        next_state: i32,
+    ) -> HandshakeServerBoundPacket {
+        let handshake = Handshake {
+            protocol_version,
+            server_addr,
+            server_port,
+            next_state,
+        };
+
+        HandshakeServerBoundPacket::Handshake(handshake)
+    }
+}

protocol/src/version/v1_14_4/login.rs

@@ -0,0 +1,482 @@
+use std::io::Read;
+use uuid::Uuid;
+
+use crate::data::chat::Message;
+use crate::decoder::Decoder;
+use crate::error::DecodeError;
+use minecraft_protocol_derive::{Decoder, Encoder};
+
+pub enum LoginServerBoundPacket {
+    LoginStart(LoginStart),
+    EncryptionResponse(EncryptionResponse),
+    LoginPluginResponse(LoginPluginResponse),
+}
+
+pub enum LoginClientBoundPacket {
+    LoginDisconnect(LoginDisconnect),
+    EncryptionRequest(EncryptionRequest),
+    LoginSuccess(LoginSuccess),
+    SetCompression(SetCompression),
+    LoginPluginRequest(LoginPluginRequest),
+}
+
+impl LoginServerBoundPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            LoginServerBoundPacket::LoginStart(_) => 0x00,
+            LoginServerBoundPacket::EncryptionResponse(_) => 0x01,
+            LoginServerBoundPacket::LoginPluginResponse(_) => 0x02,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let login_start = LoginStart::decode(reader)?;
+
+                Ok(LoginServerBoundPacket::LoginStart(login_start))
+            }
+            0x01 => {
+                let encryption_response = EncryptionResponse::decode(reader)?;
+
+                Ok(LoginServerBoundPacket::EncryptionResponse(
+                    encryption_response,
+                ))
+            }
+            0x02 => {
+                let login_plugin_response = LoginPluginResponse::decode(reader)?;
+
+                Ok(LoginServerBoundPacket::LoginPluginResponse(
+                    login_plugin_response,
+                ))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+}
+
+impl LoginClientBoundPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            LoginClientBoundPacket::LoginDisconnect(_) => 0x00,
+            LoginClientBoundPacket::EncryptionRequest(_) => 0x01,
+            LoginClientBoundPacket::LoginSuccess(_) => 0x02,
+            LoginClientBoundPacket::SetCompression(_) => 0x03,
+            LoginClientBoundPacket::LoginPluginRequest(_) => 0x04,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let login_disconnect = LoginDisconnect::decode(reader)?;
+
+                Ok(LoginClientBoundPacket::LoginDisconnect(login_disconnect))
+            }
+            0x01 => {
+                let encryption_request = EncryptionRequest::decode(reader)?;
+
+                Ok(LoginClientBoundPacket::EncryptionRequest(
+                    encryption_request,
+                ))
+            }
+            0x02 => {
+                let login_success = LoginSuccess::decode(reader)?;
+
+                Ok(LoginClientBoundPacket::LoginSuccess(login_success))
+            }
+            0x03 => {
+                let set_compression = SetCompression::decode(reader)?;
+
+                Ok(LoginClientBoundPacket::SetCompression(set_compression))
+            }
+            0x04 => {
+                let login_plugin_request = LoginPluginRequest::decode(reader)?;
+
+                Ok(LoginClientBoundPacket::LoginPluginRequest(
+                    login_plugin_request,
+                ))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+}
+
+#[derive(Encoder, Decoder, Debug)]
+pub struct LoginStart {
+    pub name: String,
+}
+
+impl LoginStart {
+    pub fn new(name: String) -> LoginServerBoundPacket {
+        let login_start = LoginStart { name };
+
+        LoginServerBoundPacket::LoginStart(login_start)
+    }
+}
+
+#[derive(Encoder, Decoder, Debug)]
+pub struct EncryptionResponse {
+    pub shared_secret: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+impl EncryptionResponse {
+    pub fn new(shared_secret: Vec<u8>, verify_token: Vec<u8>) -> LoginServerBoundPacket {
+        let encryption_response = EncryptionResponse {
+            shared_secret,
+            verify_token,
+        };
+
+        LoginServerBoundPacket::EncryptionResponse(encryption_response)
+    }
+}
+
+#[derive(Encoder, Decoder, Debug)]
+pub struct LoginPluginResponse {
+    #[data_type(with = "var_int")]
+    pub message_id: i32,
+    pub successful: bool,
+    #[data_type(with = "rest")]
+    pub data: Vec<u8>,
+}
+
+impl LoginPluginResponse {
+    pub fn new(message_id: i32, successful: bool, data: Vec<u8>) -> LoginServerBoundPacket {
+        let login_plugin_response = LoginPluginResponse {
+            message_id,
+            successful,
+            data,
+        };
+
+        LoginServerBoundPacket::LoginPluginResponse(login_plugin_response)
+    }
+}
+
+#[derive(Encoder, Decoder, Debug)]
+pub struct LoginDisconnect {
+    pub reason: Message,
+}
+
+impl LoginDisconnect {
+    pub fn new(reason: Message) -> LoginClientBoundPacket {
+        let login_disconnect = LoginDisconnect { reason };
+
+        LoginClientBoundPacket::LoginDisconnect(login_disconnect)
+    }
+}
+
+#[derive(Encoder, Decoder, Debug)]
+pub struct EncryptionRequest {
+    #[data_type(max_length = 20)]
+    pub server_id: String,
+    pub public_key: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+impl EncryptionRequest {
+    pub fn new(
+        server_id: String,
+        public_key: Vec<u8>,
+        verify_token: Vec<u8>,
+    ) -> LoginClientBoundPacket {
+        let encryption_request = EncryptionRequest {
+            server_id,
+            public_key,
+            verify_token,
+        };
+
+        LoginClientBoundPacket::EncryptionRequest(encryption_request)
+    }
+}
+
+#[derive(Encoder, Decoder, Debug)]
+pub struct LoginSuccess {
+    #[data_type(with = "uuid_hyp_str")]
+    pub uuid: Uuid,
+    #[data_type(max_length = 16)]
+    pub username: String,
+}
+
+impl LoginSuccess {
+    pub fn new(uuid: Uuid, username: String) -> LoginClientBoundPacket {
+        let login_success = LoginSuccess { uuid, username };
+
+        LoginClientBoundPacket::LoginSuccess(login_success)
+    }
+}
+
+#[derive(Encoder, Decoder, Debug)]
+pub struct SetCompression {
+    #[data_type(with = "var_int")]
+    pub threshold: i32,
+}
+
+impl SetCompression {
+    pub fn new(threshold: i32) -> LoginClientBoundPacket {
+        let set_compression = SetCompression { threshold };
+
+        LoginClientBoundPacket::SetCompression(set_compression)
+    }
+}
+
+#[derive(Encoder, Decoder, Debug)]
+pub struct LoginPluginRequest {
+    #[data_type(with = "var_int")]
+    pub message_id: i32,
+    pub channel: String,
+    #[data_type(with = "rest")]
+    pub data: Vec<u8>,
+}
+
+impl LoginPluginRequest {
+    pub fn new(message_id: i32, channel: String, data: Vec<u8>) -> LoginClientBoundPacket {
+        let login_plugin_request = LoginPluginRequest {
+            message_id,
+            channel,
+            data,
+        };
+
+        LoginClientBoundPacket::LoginPluginRequest(login_plugin_request)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::data::chat::Payload;
+    use crate::decoder::Decoder;
+    use crate::encoder::Encoder;
+    use crate::version::v1_14_4::login::*;
+    use std::io::Cursor;
+    use uuid::Uuid;
+
+    #[test]
+    fn test_login_start_packet_encode() {
+        let login_start = LoginStart {
+            name: String::from("Username"),
+        };
+
+        let mut vec = Vec::new();
+        login_start.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/login/login_start.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_login_start_packet_decode() {
+        let mut cursor =
+            Cursor::new(include_bytes!("../../../test/packet/login/login_start.dat").to_vec());
+        let login_start = LoginStart::decode(&mut cursor).unwrap();
+
+        assert_eq!(login_start.name, String::from("Username"));
+    }
+
+    #[test]
+    fn test_encryption_response_encode() {
+        let encryption_response = EncryptionResponse {
+            shared_secret: vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
+            verify_token: vec![1, 2, 3, 4],
+        };
+
+        let mut vec = Vec::new();
+        encryption_response.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/login/encryption_response.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_encryption_response_decode() {
+        let mut cursor = Cursor::new(
+            include_bytes!("../../../test/packet/login/encryption_response.dat").to_vec(),
+        );
+        let encryption_response = EncryptionResponse::decode(&mut cursor).unwrap();
+
+        assert_eq!(
+            encryption_response.shared_secret,
+            vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+        );
+        assert_eq!(encryption_response.verify_token, vec![1, 2, 3, 4]);
+    }
+
+    #[test]
+    fn test_login_plugin_response_encode() {
+        let login_plugin_response = LoginPluginResponse {
+            message_id: 55,
+            successful: true,
+            data: vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
+        };
+
+        let mut vec = Vec::new();
+        login_plugin_response.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/login/login_plugin_response.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_login_plugin_response_decode() {
+        let mut cursor = Cursor::new(
+            include_bytes!("../../../test/packet/login/login_plugin_response.dat").to_vec(),
+        );
+        let login_plugin_response = LoginPluginResponse::decode(&mut cursor).unwrap();
+
+        assert_eq!(login_plugin_response.message_id, 55);
+        assert!(login_plugin_response.successful);
+        assert_eq!(
+            login_plugin_response.data,
+            vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+        );
+    }
+
+    #[test]
+    fn test_login_disconnect_encode() {
+        let login_disconnect = LoginDisconnect {
+            reason: Message::new(Payload::text("Message")),
+        };
+
+        let mut vec = Vec::new();
+        login_disconnect.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/login/login_disconnect.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_login_disconnect_decode() {
+        let mut cursor =
+            Cursor::new(include_bytes!("../../../test/packet/login/login_disconnect.dat").to_vec());
+        let login_disconnect = LoginDisconnect::decode(&mut cursor).unwrap();
+
+        assert_eq!(
+            login_disconnect.reason,
+            Message::new(Payload::text("Message"))
+        );
+    }
+
+    #[test]
+    fn test_encryption_request_encode() {
+        let encryption_request = EncryptionRequest {
+            server_id: String::from("ServerID"),
+            public_key: vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
+            verify_token: vec![1, 2, 3, 4],
+        };
+
+        let mut vec = Vec::new();
+        encryption_request.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/login/encryption_request.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_encryption_request_decode() {
+        let mut cursor = Cursor::new(
+            include_bytes!("../../../test/packet/login/encryption_request.dat").to_vec(),
+        );
+        let encryption_request = EncryptionRequest::decode(&mut cursor).unwrap();
+
+        assert_eq!(encryption_request.server_id, String::from("ServerID"));
+        assert_eq!(
+            encryption_request.public_key,
+            vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+        );
+        assert_eq!(encryption_request.verify_token, vec![1, 2, 3, 4]);
+    }
+
+    #[test]
+    fn test_login_success_encode() {
+        let login_success = LoginSuccess {
+            uuid: Uuid::parse_str("35ee313b-d89a-41b8-b25e-d32e8aff0389").unwrap(),
+            username: String::from("Username"),
+        };
+
+        let mut vec = Vec::new();
+        login_success.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/login/login_success.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_login_success_decode() {
+        let mut cursor =
+            Cursor::new(include_bytes!("../../../test/packet/login/login_success.dat").to_vec());
+        let login_success = LoginSuccess::decode(&mut cursor).unwrap();
+
+        assert_eq!(login_success.username, String::from("Username"));
+
+        assert_eq!(
+            login_success.uuid,
+            Uuid::parse_str("35ee313b-d89a-41b8-b25e-d32e8aff0389").unwrap()
+        );
+    }
+
+    #[test]
+    fn test_set_compression_encode() {
+        let set_compression = SetCompression { threshold: 1 };
+
+        let mut vec = Vec::new();
+        set_compression.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/login/login_set_compression.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_set_compression_decode() {
+        let mut cursor = Cursor::new(
+            include_bytes!("../../../test/packet/login/login_set_compression.dat").to_vec(),
+        );
+        let set_compression = SetCompression::decode(&mut cursor).unwrap();
+
+        assert_eq!(set_compression.threshold, 1);
+    }
+
+    #[test]
+    fn test_login_plugin_request_encode() {
+        let login_plugin_request = LoginPluginRequest {
+            message_id: 55,
+            channel: String::from("Channel"),
+            data: vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
+        };
+
+        let mut vec = Vec::new();
+        login_plugin_request.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/login/login_plugin_request.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_login_plugin_request_decode() {
+        let mut cursor = Cursor::new(
+            include_bytes!("../../../test/packet/login/login_plugin_request.dat").to_vec(),
+        );
+        let login_plugin_request = LoginPluginRequest::decode(&mut cursor).unwrap();
+
+        assert_eq!(login_plugin_request.message_id, 55);
+        assert_eq!(login_plugin_request.channel, String::from("Channel"));
+        assert_eq!(
+            login_plugin_request.data,
+            vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+        );
+    }
+}

protocol/src/version/v1_14_4/mod.rs

@@ -0,0 +1,4 @@
+pub mod game;
+pub mod handshake;
+pub mod login;
+pub mod status;

protocol/src/version/v1_14_4/status.rs

@@ -0,0 +1,200 @@
+use crate::data::server_status::*;
+use crate::decoder::Decoder;
+use crate::error::DecodeError;
+use minecraft_protocol_derive::{Decoder, Encoder};
+use std::io::Read;
+
+pub enum StatusServerBoundPacket {
+    StatusRequest,
+    PingRequest(PingRequest),
+}
+
+pub enum StatusClientBoundPacket {
+    StatusResponse(StatusResponse),
+    PingResponse(PingResponse),
+}
+
+impl StatusServerBoundPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            StatusServerBoundPacket::StatusRequest => 0x00,
+            StatusServerBoundPacket::PingRequest(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => Ok(StatusServerBoundPacket::StatusRequest),
+            0x01 => {
+                let ping_request = PingRequest::decode(reader)?;
+
+                Ok(StatusServerBoundPacket::PingRequest(ping_request))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+}
+
+impl StatusClientBoundPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            StatusClientBoundPacket::StatusResponse(_) => 0x00,
+            StatusClientBoundPacket::PingResponse(_) => 0x01,
+        }
+    }
+}
+
+#[derive(Encoder, Decoder, Debug)]
+pub struct PingRequest {
+    pub time: u64,
+}
+
+impl PingRequest {
+    pub fn new(time: u64) -> StatusServerBoundPacket {
+        let ping_request = PingRequest { time };
+
+        StatusServerBoundPacket::PingRequest(ping_request)
+    }
+}
+
+#[derive(Encoder, Decoder, Debug)]
+pub struct PingResponse {
+    pub time: u64,
+}
+
+impl PingResponse {
+    pub fn new(time: u64) -> StatusClientBoundPacket {
+        let ping_response = PingResponse { time };
+
+        StatusClientBoundPacket::PingResponse(ping_response)
+    }
+}
+
+#[derive(Encoder, Decoder, Debug)]
+pub struct StatusResponse {
+    pub server_status: ServerStatus,
+}
+
+impl StatusResponse {
+    pub fn new(server_status: ServerStatus) -> StatusClientBoundPacket {
+        let status_response = StatusResponse { server_status };
+
+        StatusClientBoundPacket::StatusResponse(status_response)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::data::chat::{Message, Payload};
+    use crate::decoder::Decoder;
+    use crate::encoder::Encoder;
+    use crate::version::v1_14_4::status::*;
+    use std::io::Cursor;
+    use uuid::Uuid;
+
+    #[test]
+    fn test_ping_request_encode() {
+        let ping_request = PingRequest {
+            time: 1577735845610,
+        };
+
+        let mut vec = Vec::new();
+        ping_request.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/status/ping_request.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_status_ping_request_decode() {
+        let mut cursor =
+            Cursor::new(include_bytes!("../../../test/packet/status/ping_request.dat").to_vec());
+        let ping_request = PingRequest::decode(&mut cursor).unwrap();
+
+        assert_eq!(ping_request.time, 1577735845610);
+    }
+
+    #[test]
+    fn test_ping_response_encode() {
+        let ping_response = PingResponse {
+            time: 1577735845610,
+        };
+
+        let mut vec = Vec::new();
+        ping_response.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/status/ping_response.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_status_ping_response_decode() {
+        let mut cursor =
+            Cursor::new(include_bytes!("../../../test/packet/status/ping_response.dat").to_vec());
+        let ping_response = PingResponse::decode(&mut cursor).unwrap();
+
+        assert_eq!(ping_response.time, 1577735845610);
+    }
+
+    #[test]
+    fn test_status_response_encode() {
+        let version = ServerVersion {
+            name: String::from("1.15.1"),
+            protocol: 575,
+        };
+
+        let player = OnlinePlayer {
+            id: Uuid::parse_str("2a1e1912-7103-4add-80fc-91ebc346cbce").unwrap(),
+            name: String::from("Username"),
+        };
+
+        let players = OnlinePlayers {
+            online: 10,
+            max: 100,
+            sample: vec![player],
+        };
+
+        let server_status = ServerStatus {
+            version,
+            description: Message::new(Payload::text("Description")),
+            players,
+        };
+
+        let status_response = StatusResponse { server_status };
+
+        let mut vec = Vec::new();
+        status_response.encode(&mut vec).unwrap();
+
+        assert_eq!(
+            vec,
+            include_bytes!("../../../test/packet/status/status_response.dat").to_vec()
+        );
+    }
+
+    #[test]
+    fn test_status_response_decode() {
+        let mut cursor =
+            Cursor::new(include_bytes!("../../../test/packet/status/status_response.dat").to_vec());
+        let status_response = StatusResponse::decode(&mut cursor).unwrap();
+        let server_status = status_response.server_status;
+
+        let player = OnlinePlayer {
+            id: Uuid::parse_str("2a1e1912-7103-4add-80fc-91ebc346cbce").unwrap(),
+            name: String::from("Username"),
+        };
+
+        assert_eq!(server_status.version.name, String::from("1.15.1"));
+        assert_eq!(server_status.version.protocol, 575);
+        assert_eq!(server_status.players.max, 100);
+        assert_eq!(server_status.players.online, 10);
+        assert_eq!(server_status.players.sample, vec![player]);
+        assert_eq!(
+            server_status.description,
+            Message::new(Payload::text("Description"))
+        );
+    }
+}

protocol/test/packet/game/boss_bar_remove.dat

@@ -0,0 +1 @@
+<EFBFBD><EFBFBD>*<2A>ӿG<D3BF><47><EFBFBD>)M`<60>ܢ

protocol/test/packet/game/client_bound_chat_message.dat

@@ -0,0 +1 @@
+{"text":"hello client!"}

protocol/test/packet/game/entity_action.dat

@@ -0,0 +1 @@
+筦<08><><EFBFBD><EFBFBD>

protocol/test/packet/game/game_disconnect.dat

@@ -0,0 +1 @@
+{"text":"Message"}

protocol/test/packet/game/server_bound_chat_message.dat

@@ -0,0 +1 @@
+
hello server!

protocol/test/packet/login/encryption_request.dat

@@ -0,0 +1,3 @@
+ServerID
+
	
+


protocol/test/packet/login/encryption_response.dat

@@ -0,0 +1,3 @@
+
+
	
+


protocol/test/packet/login/login_disconnect.dat

@@ -0,0 +1 @@
+{"text":"Message"}

protocol/test/packet/login/login_plugin_request.dat

@@ -0,0 +1 @@
+7Channel
	

protocol/test/packet/login/login_plugin_response.dat

@@ -0,0 +1 @@
+7

	

protocol/test/packet/login/login_set_compression.dat

@@ -0,0 +1 @@
+

protocol/test/packet/login/login_start.dat

@@ -0,0 +1 @@
+Username

protocol/test/packet/login/login_success.dat

@@ -0,0 +1 @@
+$35ee313b-d89a-41b8-b25e-d32e8aff0389Username

protocol/test/packet/status/status_response.dat

@@ -0,0 +1 @@
+¾
{"version":{"name":"1.15.1","protocol":575},"players":{"max":100,"online":10,"sample":[{"name":"Username","id":"2a1e1912-7103-4add-80fc-91ebc346cbce"}]},"description":{"text":"Description"}}