multi-contract

multicontract.toml

@@ -0,0 +1,11 @@
+[settings]
+main = "main"
+
+[contracts.main]
+name = "workshop"
+add-unlabelled = true
+
+[contracts.workshop-ev]
+add-labels = ["ev"]
+external-view = true
+

src/workshop.rs

@@ -28,4 +28,12 @@ pub trait Workshop {
     fn perform_add(&self, value: BigUint) {
         self.sum().update(|sum| *sum += value);
     }
+
+    /// The sum, but squared. An expensive operation.
+    #[view]
+    #[label("ev")]
+    fn sum_squared(&self) -> BigUint {
+        let s = self.sum().get();
+        s.clone() * s
+    }
 }

wasm-workshop-ev/Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+name = "workshop-ev-wasm"
+version = "0.0.0"
+authors = ["Andrei Marinica <[email protected]>"]
+edition = "2021"
+publish = false
+
+[lib]
+crate-type = ["cdylib"]
+[profile.release]
+codegen-units = 1
+opt-level = "z"
+lto = true
+debug = false
+panic = "abort"
+[dependencies.workshop]
+path = ".."
+
+[dependencies.multiversx-sc-wasm-adapter]
+version = "0.43.4"
+
+[workspace]
+members = ["."]

wasm-workshop-ev/src/lib.rs

@@ -0,0 +1,30 @@
+// Code generated by the multiversx-sc multi-contract system. DO NOT EDIT.
+
+////////////////////////////////////////////////////
+////////////////// AUTO-GENERATED //////////////////
+////////////////////////////////////////////////////
+
+// Init:                                 1
+// Endpoints:                            1
+// Async Callback (empty):               1
+// Total number of exported functions:   3
+
+#![no_std]
+
+// Configuration that works with rustc < 1.73.0.
+// TODO: Recommended rustc version: 1.73.0 or newer.
+#![feature(lang_items)]
+
+multiversx_sc_wasm_adapter::allocator!();
+multiversx_sc_wasm_adapter::panic_handler!();
+
+multiversx_sc_wasm_adapter::external_view_init! {}
+
+multiversx_sc_wasm_adapter::external_view_endpoints! {
+    workshop
+    (
+        sum_squared => sum_squared
+    )
+}
+
+multiversx_sc_wasm_adapter::async_callback_empty! {}

wasm/src/lib.rs

@@ -10,7 +10,9 @@
 // Total number of exported functions:   4
 
 #![no_std]
-#![allow(internal_features)]
+
+// Configuration that works with rustc < 1.73.0.
+// TODO: Recommended rustc version: 1.73.0 or newer.
 #![feature(lang_items)]
 
 multiversx_sc_wasm_adapter::allocator!();