From 81743108c3497cc1f738cb5582a1230187843dab Mon Sep 17 00:00:00 2001
From: _ <_@_>
Date: Sat, 30 Sep 2023 09:52:42 -0500
Subject: [PATCH] :bug: bug: implement OP_MULK

---
 src/instruction.rs |  2 ++
 src/loader.rs      |  1 +
 src/state.rs       | 16 ++++++++++++++++
 3 files changed, 19 insertions(+)

diff --git a/src/instruction.rs b/src/instruction.rs
index 0ff3568..cedb35d 100644
--- a/src/instruction.rs
+++ b/src/instruction.rs
@@ -59,6 +59,8 @@ pub enum Instruction {
 	
 	Mul (u8, u8, u8),
 	
+	MulK (u8, u8, u8),
+	
 	NewTable (u8),
 	
 	Not (u8, u8),
diff --git a/src/loader.rs b/src/loader.rs
index fffb4e0..712527b 100644
--- a/src/loader.rs
+++ b/src/loader.rs
@@ -104,6 +104,7 @@ pub fn parse_inst (buf: [u8; 4]) -> Option <Inst>
 		0x11 => Inst::SetI (a, b, c, k),
 		0x12 => Inst::SetField (a, b, c, k),
 		0x13 => Inst::NewTable (a),
+		0x18 => Inst::MulK (a, b, c),
 		0x19 => Inst::ModK (a, b, c),
 		0x22 => Inst::Add (a, b, c),
 		0x24 => Inst::Mul (a, b, c),
diff --git a/src/state.rs b/src/state.rs
index 4a40e19..40d85f8 100644
--- a/src/state.rs
+++ b/src/state.rs
@@ -465,6 +465,22 @@ impl <'a> State <'a> {
 				
 				*self.reg_mut (*a) = x;
 			},
+			Instruction::MulK (a, b, c) => {
+				let v_b = self.reg (*b);
+				let v_c = &k [usize::from (*c)];
+				
+				let x = if let (Some (v_b), Some (v_c)) = (v_b.as_int (), v_c.as_int ()) 
+				{
+					Value::from (v_b * v_c)
+				}
+				else {
+					let v_b = v_b.as_float ().unwrap_or_else (|| panic! ("{v_b}"));
+					let v_c = v_c.as_float ().unwrap_or_else (|| panic! ("{v_c}"));
+					Value::from (v_b * v_c)
+				};
+				
+				*self.reg_mut (*a) = x;
+			},
 			Instruction::NewTable (a) => {
 				*self.reg_mut (*a) = Value::Table (Default::default ());
 			},