Rename _checked codegen call methods with try_

CHANGELOG.md

@@ -5,6 +5,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+- Rename `_checked` codegen call methods with `try_` ‒ [#1621](https://github.com/paritytech/ink/pull/1621)
+
+### Breaking Changes
+
+1. We've renamed some of the generated message methods on the `ContractRef` struct. They
+   have been changed from `_checked` to `try_` ([#1621](https://github.com/paritytech/ink/pull/1621))
 
 ## Version 4.0.0-beta.1
 The coolest feature included in this release is the first first published version of

crates/ink/codegen/src/generator/as_dependency/contract_ref.rs

@@ -364,7 +364,7 @@ impl ContractRef<'_> {
             .filter_attr(message.attrs().to_vec());
         let storage_ident = self.contract.module().storage().ident();
         let message_ident = message.ident();
-        let checked_message_ident = message.checked_ident();
+        let try_message_ident = message.try_ident();
         let call_operator = match message.receiver() {
             ir::Receiver::Ref => quote! { call },
             ir::Receiver::RefMut => quote! { call_mut },
@@ -381,7 +381,7 @@ impl ContractRef<'_> {
                 & #mut_token self
                 #( , #input_bindings : #input_types )*
             ) #output_type {
-                self.#checked_message_ident( #( #input_bindings, )* )
+                self.#try_message_ident( #( #input_bindings, )* )
                     .unwrap_or_else(|error| ::core::panic!(
                         "encountered error while calling {}::{}: {:?}",
                         ::core::stringify!(#storage_ident),
@@ -392,7 +392,7 @@ impl ContractRef<'_> {
 
             #( #attrs )*
             #[inline]
-            pub fn #checked_message_ident(
+            pub fn #try_message_ident(
                 & #mut_token self
                 #( , #input_bindings : #input_types )*
             ) -> #wrapped_output_type {

crates/ink/ir/src/ir/item_impl/message.rs

@@ -317,9 +317,9 @@ impl Message {
         utils::local_message_id(self.ident())
     }
 
-    /// Returns the identifier of the message with an additional `_checked` suffix attached.
-    pub fn checked_ident(&self) -> Ident {
-        quote::format_ident!("{}_checked", self.ident())
+    /// Returns the identifier of the message with an additional `try_` prefix attached.
+    pub fn try_ident(&self) -> Ident {
+        quote::format_ident!("try_{}", self.ident())
     }
 }
 

crates/ink/tests/ui/contract/fail/message-hygiene-checked.rs → crates/ink/tests/ui/contract/fail/message-hygiene-try.rs

@@ -13,7 +13,7 @@ mod contract {
         pub fn message(&self) {}
 
         #[ink(message)]
-        pub fn message_checked(&self) {}
+        pub fn try_message(&self) {}
     }
 }
 

crates/ink/tests/ui/contract/fail/message-hygiene-try.stderr

@@ -0,0 +1,8 @@
+error[E0592]: duplicate definitions with name `try_message`
+  --> tests/ui/contract/fail/message-hygiene-try.rs:16:9
+   |
+1  | #[ink::contract]
+   | ---------------- other definition for `try_message`
+...
+16 |         pub fn try_message(&self) {}
+   |         ^^^ duplicate definitions for `try_message`

examples/lang-err-integration-tests/contract-ref/lib.rs

@@ -48,7 +48,7 @@ mod contract_ref {
         #[ink(message)]
         pub fn flip_check(&mut self) {
             self.flipper
-                .flip_checked()
+                .try_flip()
                 .expect("The ink! codegen should've produced a valid call.");
         }
 
@@ -60,7 +60,7 @@ mod contract_ref {
         #[ink(message)]
         pub fn get_check(&mut self) -> bool {
             self.flipper
-                .get_checked()
+                .try_get()
                 .expect("The ink! codegen should've produced a valid call.")
         }
     }