Add macros package

ibihf-macros/Cargo.lock

@@ -0,0 +1,101 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "darling"
+version = "0.14.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7b750cb3417fd1b327431a470f388520309479ab0bf5e323505daf0290cd3850"
+dependencies = [
+ "darling_core",
+ "darling_macro",
+]
+
+[[package]]
+name = "darling_core"
+version = "0.14.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "109c1ca6e6b7f82cc233a97004ea8ed7ca123a9af07a8230878fcfda9b158bf0"
+dependencies = [
+ "fnv",
+ "ident_case",
+ "proc-macro2",
+ "quote",
+ "strsim",
+ "syn",
+]
+
+[[package]]
+name = "darling_macro"
+version = "0.14.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4aab4dbc9f7611d8b55048a3a16d2d010c2c8334e46304b40ac1cc14bf3b48e"
+dependencies = [
+ "darling_core",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "fnv"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
+
+[[package]]
+name = "ibihf-macros"
+version = "0.1.0"
+dependencies = [
+ "darling",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "ident_case"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.56"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b63bdb0cd06f1f4dedf69b254734f9b45af66e4a031e42a7480257d9898b435"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.26"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4424af4bf778aae2051a77b60283332f386554255d722233d09fbfc7e30da2fc"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "strsim"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
+
+[[package]]
+name = "syn"
+version = "1.0.109"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e5464a87b239f13a63a501f2701565754bae92d243d4bb7eb12f6d57d2269bf4"

ibihf-macros/Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "ibihf-macros"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+darling = "0.14.4"
+proc-macro2 = "1.0.56"
+quote = "1.0.26"
+syn = "1.0"
+
+[lib]
+proc-macro = true

ibihf-macros/src/lib.rs

@@ -0,0 +1,32 @@
+use darling::FromDeriveInput;
+use proc_macro::{self, TokenStream};
+use quote::quote;
+use syn::{parse_macro_input, DeriveInput};
+
+#[derive(FromDeriveInput, Default)]
+#[darling(default, attributes(urls))]
+struct Opts {
+    url_key: String,
+    url_key_template: String,
+}
+
+#[proc_macro_derive(TemplateUrl, attributes(urls))]
+pub fn derive(input: TokenStream) -> TokenStream {
+    let input = parse_macro_input!(input);
+    let opts = Opts::from_derive_input(&input).expect("Wrong options");
+    let DeriveInput { ident, .. } = input;
+
+    let url_key = opts.url_key;
+    let url_key_template = opts.url_key_template;
+    let answer = quote! {
+      const URL_KEY: &'static str = #url_key;
+      const URL_KEY_TEMPLATE: &'static str = #url_key_template;
+    };
+
+    let output = quote! {
+        impl crate::traits::TemplateUrl for #ident<'_> {
+            #answer
+        }
+    };
+    output.into()
+}