From b1d0db5ea491889b316b5d73ae5e339b20018333 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Emmanuel=20Beno=C3=AEt?= <tseeker@nocternity.net>
Date: Mon, 2 Jan 2023 15:54:50 +0100
Subject: [PATCH] Interpreter - Callable interface definition
---
src/interpreter/callable.rs | 13 +++++++++++++
1 file changed, 13 insertions(+)
create mode 100644 src/interpreter/callable.rs
diff --git a/src/interpreter/callable.rs b/src/interpreter/callable.rs
new file mode 100644
index 0000000..c82922d
--- /dev/null
+++ b/src/interpreter/callable.rs
@@ -0,0 +1,13 @@
+/// A callable is some object that supports being called.
+pub trait Callable {
+ /// Return the amount of arguments supported by the callable.
+ fn arity(&self) -> usize;
+
+ /// Run the callable in the execution environment with the specified
+ /// arguments.
+ fn call(
+ &self,
+ environment: &mut Environment,
+ arguments: &Vec<Value>,
+ ) -> Result<Value, InterpreterError>;
+}