From fc898e28e28e8e4dfbb8167e61000d3287c3c62e Mon Sep 17 00:00:00 2001
From: Jeff <dev@jeffa.io>
Date: Tue, 28 Nov 2023 19:18:04 -0500
Subject: [PATCH] Begin converting to new built-in API

---
 src/built_in_functions/assert.rs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 src/built_in_functions/assert.rs

diff --git a/src/built_in_functions/assert.rs b/src/built_in_functions/assert.rs
new file mode 100644
index 0000000..77ee769
--- /dev/null
+++ b/src/built_in_functions/assert.rs
@@ -0,0 +1,19 @@
+use crate::{BuiltInFunction, Error, Result, Value};
+
+pub struct Assert;
+
+impl BuiltInFunction for Assert {
+    fn name(&self) -> &'static str {
+        "assert"
+    }
+
+    fn run(&self, arguments: &[Value]) -> Result<Value> {
+        for argument in arguments {
+            if !argument.as_boolean()? {
+                return Err(Error::AssertFailed);
+            }
+        }
+
+        Ok(Value::Empty)
+    }
+}