Merge pull request #1355 from demergent-labs/fix_candid_canister_method

expose the candid again

src/compiler/index.ts

@@ -118,7 +118,8 @@ async function azle() {
                 canisterJavaScript
             );
 
-            writeFileSync(candidPath, candid);
+            writeFileSync(candidPath, candid); // This is for the dfx.json candid property
+            writeFileSync(`${canisterPath}/canister/src/candid.did`, candid); // This is for the Rust canister to have access to the candid file
 
             const compilerInfo: CompilerInfo = {
                 // TODO The spread is because canisterMethods is a function with properties

src/compiler/rust/canister/src/lib.rs

@@ -14,6 +14,9 @@ mod ic;
 #[cfg(all(target_arch = "wasm32", target_os = "wasi"))]
 const MAIN_JS: &[u8] = include_bytes!("main.js");
 
+#[cfg(all(target_arch = "wasm32", target_os = "wasi"))]
+const CANDID: &[u8] = include_bytes!("candid.did");
+
 #[allow(unused)]
 type Memory = VirtualMemory<DefaultMemoryImpl>;
 #[allow(unused)]

src/compiler/rust/canister_methods/src/lib.rs

@@ -214,6 +214,13 @@ pub fn canister_methods(_: TokenStream) -> TokenStream {
         #(#query_methods)*
 
         #(#update_methods)*
+
+        #[ic_cdk_macros::query]
+        fn __get_candid_interface_tmp_hack() -> String {
+            std::str::from_utf8(CANDID)
+                .expect("candid.did could not be read")
+                .to_string()
+        }
     }
     .into()
 }