feat: Auto convert macro (#22)

* add macro easing from implementations

* update macro

* update docs

* allow function strings instead of just paths

* docs

* update dependencies

* auto from/to for (nearly) all contents. also improve asynciterator results

* change serde

* docs formatting

* update enums

* typing for attachmentkind

* Update src/warp/raygun.rs

Co-authored-by: Darius Clark <[email protected]>

* Update src/warp/multipass.rs

Co-authored-by: Darius Clark <[email protected]>

* Merge branch 'main' into auto-convert-macro

---------

Co-authored-by: Flemmli97 <[email protected]>
Co-authored-by: Darius Clark <[email protected]>

Cargo.toml

@@ -11,7 +11,7 @@ bytes = { version = "1", features = ["serde"] }
 uuid = { version = "1", features = ["serde", "v4"] }
 futures = { version = "0.3", default-features = false, features = ["std"] }
 serde = { version = "1.0", features = ["derive", "rc"] }
-indexmap = { version = "2.2.6", features = ["serde"] }
+indexmap = { version = "2.7.0", features = ["serde"] }
 
 # warp
 warp-ipfs = { git = "https://github.com/Satellite-im/Warp.git", rev = "fdb96da58174b41548992b3dcaba40a01b10ecf9"}
@@ -29,6 +29,7 @@ send_wrapper = "0.6.0"
 web-sys = "0.3.76"
 js-sys = "0.3"
 tsify-next = "0.5.4"
+macro_utils = { path = "./macro-utils" }
 
 # examples
-tiny_file_server = "0.1.5"
+tiny_file_server = "0.1.5"

macro-utils/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "macro_utils"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+syn = { version = "2.0.87", features = ["derive", "full"] }
+quote = "1.0.37"
+proc-macro2 = "1.0.89"
+
+[lib]
+proc-macro = true

macro-utils/src/lib.rs

@@ -0,0 +1,66 @@
+extern crate proc_macro2;
+
+use proc_macro::TokenStream;
+
+mod wasm_convert;
+
+/// Easy type conversion between enums and structs of similar structure
+/// 
+/// Also allows specifying a function for conversion for types not implementing From already
+/// 
+/// Fields can accept an attribute with name "from" or "into" representing a conversion function.
+/// 
+/// This value can either be a path to a function or some rust code. 
+/// 
+/// The path need to accept a single value of the current type and output the target type
+/// 
+/// Unnamed enum fields are referenced as f_0, f_1...
+/// E.g. `"{f_0}.converter_function()"`
+/// ```
+/// use macro_utils::FromTo;
+/// 
+/// #[derive(Debug)]
+/// pub enum A {
+///     SomeValue1,
+///     SomeValue2
+/// }
+/// 
+/// #[derive(FromTo, PartialEq, Debug)]
+/// #[from_to(A)]
+/// pub enum B {
+///     SomeValue1,
+///     SomeValue2
+/// }
+/// 
+/// assert_eq!(A::SomeValue1, B::SomeValue1.into());
+/// 
+/// pub struct S1 {
+///     x: i64,
+///     y: i128
+/// }
+/// 
+/// #[derive(FromTo)]
+/// #[from_to(A)]
+/// pub struct S2 {
+///     x: i64,
+///     y: i128
+/// }
+/// 
+/// #[derive(FromTo)]
+/// #[from_to(A)]
+/// pub struct S3 {
+///     // Pass in a custom conversion function. If not provided will use a From implementation
+///     #[from_to(from = "converter_function_from", to = "converter_function_to")]
+///     // Referencing the struct itself is also possible
+///     #[from_to(from = "{value}.x.converter_function()", to = "{value}.x.converter_function()")]
+///     x: String,
+///     #[from_to(from = "converter_function_from", to = "converter_function_to")]
+///     y: String
+/// }
+/// ```
+#[proc_macro_derive(FromTo, attributes(from_to))]
+pub fn from_to(input: TokenStream) -> TokenStream {
+    wasm_convert::expand(input)
+        .unwrap_or_else(|e| e.into_compile_error().into())
+        .into()
+}