From 19fefeb732d559195edb01ebc36170c0cf9a0308 Mon Sep 17 00:00:00 2001
From: nic-gaffney <gaffney_nic@protonmail.com>
Date: Fri, 14 Apr 2023 04:57:53 -0500
Subject: eepy

---
 crates/sloth_vm/src/sloth_std/mod.rs  |  4 ++++
 crates/sloth_vm/src/sloth_std/time.rs | 25 +++++++++++++++++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 crates/sloth_vm/src/sloth_std/time.rs

(limited to 'crates/sloth_vm')

diff --git a/crates/sloth_vm/src/sloth_std/mod.rs b/crates/sloth_vm/src/sloth_std/mod.rs
index b40fb9a..56e166c 100644
--- a/crates/sloth_vm/src/sloth_std/mod.rs
+++ b/crates/sloth_vm/src/sloth_std/mod.rs
@@ -8,6 +8,7 @@ pub mod file;
 pub mod rand;
 pub mod stdio;
 pub mod term;
+pub mod time;
 
 pub static NATIVE_LIBRARY: Lazy<HashMap<&'static str, NativeFunction>> = Lazy::new(|| {
     let mut map = HashMap::new();
@@ -29,5 +30,8 @@ pub static NATIVE_LIBRARY: Lazy<HashMap<&'static str, NativeFunction>> = Lazy::n
     map.insert("file$read", file::FILE_READ);
     map.insert("file$write", file::FILE_WRITE);
 
+    // time
+    map.insert("wait", time::WAIT);
+
     map
 });
diff --git a/crates/sloth_vm/src/sloth_std/time.rs b/crates/sloth_vm/src/sloth_std/time.rs
new file mode 100644
index 0000000..4df715e
--- /dev/null
+++ b/crates/sloth_vm/src/sloth_std/time.rs
@@ -0,0 +1,25 @@
+use std::{thread, time};
+
+use crate::native::{self, NativeFunction, NativeFunctionResult};
+use crate::value::Primitive;
+use crate::value::Primitive::Integer;
+use crate::VM;
+
+fn wait(_vm: &mut VM, args: &[Primitive]) -> NativeFunctionResult {
+    let sec = args.get(0).cloned();
+
+    let Some(Integer(sec)) = sec else {
+        return Err(native::Error::InvalidArgument);
+    };
+
+    thread::sleep(time::Duration::from_secs(sec.try_into().unwrap()));
+
+    Ok(Primitive::Empty)
+}
+
+pub const WAIT: NativeFunction = NativeFunction {
+    name: "wait",
+    function: wait,
+    arity: 1,
+    returns_value: false,
+};
-- 
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