Variable bindings as associated consts (#5)

* & bump major version

* & bump major version

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name          = "worker-bindings"
-version       = "1.0.0"
+version       = "2.0.0"
 edition       = "2021"
 authors       = ["kanarus <[email protected]>"]
 documentation = "https://docs.rs/worker-bindings"

README.md

@@ -10,6 +10,9 @@
 
 *wrangler.toml*
 ```toml
+[vars]
+MY_VAR = "my-variable"
+
 [[kv_namespaces]]
 binding = "MY_KV"
 id      = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
@@ -29,8 +32,11 @@ pub async fn main(req: Request, env: Env, _ctx: worker::Context) -> Result<Respo
     /* load bindings from env */
     let b = Bindings::from(&env);
 
-    let data = b.MY_KV.get("data").text().await
-        .expect("Failed to get data");
+    let var: &'static str = b.MY_VAR;
+
+    let var: &'static str = Bindings::MY_VAR;
+
+    let data = b.MY_KV.get("data").text().await?;
 
     //...
 }

example/Cargo.toml

@@ -5,4 +5,4 @@ edition = "2021"
 
 [dependencies]
 worker          = { version = "0.3" }
-worker-bindings = { version = "1.0", path = ".." }
+worker-bindings = { path = ".." }

example/src/lib.rs

@@ -10,8 +10,9 @@ pub async fn main(_req: Request, env: Env, _ctx: worker::Context) -> Result<Resp
     /* load bindings from env */
     let b = Bindings::from(&env);
 
-    let _data = b.KV.get("data").text().await
-        .expect("Failed to get data");
+    let _var: &'static str = Bindings::VAR;
+
+    let _data = b.KV.get("data").text().await?;
 
     Response::ok("Hello, worker-bindings!")
 }

example/wrangler.toml

@@ -2,6 +2,9 @@ name = "example"
 main = "build/worker/shim.mjs"
 compatibility_date = "2024-04-19"
 
+[vars]
+VAR = "my_variable"
+
 [[kv_namespaces]]
 binding = "KV"
 id      = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"

src/internal.rs

@@ -185,7 +185,7 @@ pub(super) fn bindings(env: TokenStream, bindings_struct: TokenStream) -> Result
         let methods = bindings.iter()
             .filter_map(|(name, binding)| match binding {
                 Binding::Variable(var) => Some(quote! {
-                    #vis const fn #name() -> &'static str { #var }
+                    #vis const #name: &'static str = #var;
                 }),
                 _ => None
             });