Add SetFunctions::execute stub

yash-builtin/src/typeset.rs

@@ -264,6 +264,7 @@ use yash_syntax::source::pretty::{Annotation, AnnotationType, Message, MessageBa
 use yash_syntax::source::Location;
 
 mod print_variables;
+mod set_functions;
 mod set_variables;
 pub mod syntax;
 
@@ -413,7 +414,7 @@ impl Command {
         match self {
             Self::SetVariables(command) => command.execute(env),
             Self::PrintVariables(command) => command.execute(&env.variables),
-            Self::SetFunctions(command) => todo!("{command:?}"), // command.execute(env),
+            Self::SetFunctions(command) => command.execute(&mut env.functions),
             Self::PrintFunctions(command) => todo!("{command:?}"), // command.execute(env),
         }
     }

yash-builtin/src/typeset/set_functions.rs

@@ -0,0 +1,26 @@
+// This file is part of yash, an extended POSIX shell.
+// Copyright (C) 2023 WATANABE Yuki
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+use super::*;
+use yash_env::function::FunctionSet;
+
+impl SetFunctions {
+    /// Executes the command.
+    pub fn execute(self, functions: &mut FunctionSet) -> Result<String, Vec<ExecuteError>> {
+        _ = functions;
+        todo!()
+    }
+}