From 68e56af987e08f292316c83001ba3ba49b61f5f5 Mon Sep 17 00:00:00 2001
From: Devin Bidwell <dbidwell94@biddydev.com>
Date: Tue, 25 Nov 2025 02:27:28 -0700
Subject: [PATCH] yield and sleep

---
 libs/compiler/src/test/loops.rs   |  4 +--
 libs/compiler/src/test/mod.rs     |  1 +
 libs/compiler/src/test/syscall.rs | 53 +++++++++++++++++++++++++++++++
 libs/compiler/src/v1.rs           | 48 ++++++++++++++++++++++++++--
 4 files changed, 102 insertions(+), 4 deletions(-)
 create mode 100644 libs/compiler/src/test/syscall.rs

diff --git a/libs/compiler/src/test/loops.rs b/libs/compiler/src/test/loops.rs
index c421a99..b9c38e3 100644
--- a/libs/compiler/src/test/loops.rs
+++ b/libs/compiler/src/test/loops.rs
@@ -111,7 +111,7 @@ fn test_while_loop() -> anyhow::Result<()> {
 fn test_loop_continue() -> anyhow::Result<()> {
     let compiled = compile! {
         debug
-        "
+        r#"
         let a = 0;
         loop {
             a = a + 1;
@@ -120,7 +120,7 @@ fn test_loop_continue() -> anyhow::Result<()> {
             }
             break;
         }
-        "
+        "#
     };
 
     // Labels: L1 (start), L2 (end), L3 (if end)
diff --git a/libs/compiler/src/test/mod.rs b/libs/compiler/src/test/mod.rs
index 47893fc..6a4ba07 100644
--- a/libs/compiler/src/test/mod.rs
+++ b/libs/compiler/src/test/mod.rs
@@ -47,3 +47,4 @@ mod declaration_literal;
 mod function_declaration;
 mod logic_expression;
 mod loops;
+mod syscall;
diff --git a/libs/compiler/src/test/syscall.rs b/libs/compiler/src/test/syscall.rs
new file mode 100644
index 0000000..46eb7dd
--- /dev/null
+++ b/libs/compiler/src/test/syscall.rs
@@ -0,0 +1,53 @@
+use crate::compile;
+use indoc::indoc;
+use pretty_assertions::assert_eq;
+
+#[test]
+fn test_yield_syscall() -> anyhow::Result<()> {
+    let compiled = compile! {
+        debug
+        "
+        yield();
+        "
+    };
+
+    assert_eq!(
+        compiled,
+        indoc! {
+            "
+            j main
+            main:
+            yield
+            "
+        }
+    );
+
+    Ok(())
+}
+
+#[test]
+fn test_sleep_syscall() -> anyhow::Result<()> {
+    let compiled = compile! {
+        debug
+        "
+        sleep(3);
+        let sleepAmount = 15;
+        sleep(sleepAmount);
+        "
+    };
+
+    assert_eq!(
+        compiled,
+        indoc! {
+            "
+            j main
+            main:
+            sleep 3
+            move r8 15 #sleepAmount
+            sleep r8
+            "
+        }
+    );
+
+    Ok(())
+}
diff --git a/libs/compiler/src/v1.rs b/libs/compiler/src/v1.rs
index 7329091..59475be 100644
--- a/libs/compiler/src/v1.rs
+++ b/libs/compiler/src/v1.rs
@@ -1,10 +1,11 @@
 use crate::variable_manager::{self, LocationRequest, VariableLocation, VariableScope};
 use parser::{
     Parser as ASTParser,
+    sys_call::{SysCall, System},
     tree_node::{
         AssignmentExpression, BinaryExpression, BlockExpression, DeviceDeclarationExpression,
         Expression, FunctionExpression, IfExpression, InvocationExpression, Literal,
-        LogicalExpression, LoopExpression, WhileExpression,
+        LiteralOrVariable, LogicalExpression, LoopExpression, WhileExpression,
     },
 };
 use quick_error::quick_error;
@@ -152,6 +153,13 @@ impl<'a, W: std::io::Write> Compiler<'a, W> {
                 self.expression_loop(expr_loop, scope)?;
                 Ok(None)
             }
+            Expression::Syscall(SysCall::System(system_syscall)) => {
+                let res = self.expression_syscall_system(system_syscall, scope)?;
+                Ok(res.map(|l| CompilationResult {
+                    location: l,
+                    temp_name: None,
+                }))
+            }
             Expression::While(expr_while) => {
                 self.expression_while(expr_while, scope)?;
                 Ok(None)
@@ -740,6 +748,18 @@ impl<'a, W: std::io::Write> Compiler<'a, W> {
         }
     }
 
+    fn compile_literal_or_variable(
+        &mut self,
+        val: LiteralOrVariable,
+        scope: &mut VariableScope,
+    ) -> Result<(String, Option<String>), Error> {
+        let expr = match val {
+            LiteralOrVariable::Literal(l) => Expression::Literal(l),
+            LiteralOrVariable::Variable(v) => Expression::Variable(v),
+        };
+        self.compile_operand(expr, scope)
+    }
+
     fn expression_binary<'v>(
         &mut self,
         expr: BinaryExpression,
@@ -978,6 +998,31 @@ impl<'a, W: std::io::Write> Compiler<'a, W> {
         Ok(VariableLocation::Persistant(VariableScope::RETURN_REGISTER))
     }
 
+    fn expression_syscall_system<'v>(
+        &mut self,
+        expr: System,
+        scope: &mut VariableScope<'v>,
+    ) -> Result<Option<VariableLocation>, Error> {
+        match expr {
+            System::Yield => {
+                self.write_output("yield")?;
+                Ok(None)
+            }
+            System::Sleep(amt) => {
+                let (var, cleanup) = self.compile_literal_or_variable(amt, scope)?;
+                self.write_output(format!("sleep {var}"))?;
+                if let Some(temp) = cleanup {
+                    scope.free_temp(temp)?;
+                }
+
+                Ok(None)
+            }
+            _ => {
+                todo!()
+            }
+        }
+    }
+
     /// Compile a function declaration.
     /// Calees are responsible for backing up any registers they wish to use.
     fn expression_function<'v>(
@@ -1092,4 +1137,3 @@ impl<'a, W: std::io::Write> Compiler<'a, W> {
         Ok(())
     }
 }
-