1 files changed, 56 insertions, 0 deletions
diff --git a/users/tazjin/rlox/src/bytecode/opcode.rs b/users/tazjin/rlox/src/bytecode/opcode.rs
new file mode 100644
index 0000000000..8a106f9691
--- /dev/null
+++ b/users/tazjin/rlox/src/bytecode/opcode.rs
@@ -0,0 +1,56 @@
+#[derive(Clone, Copy, Debug)]
+pub struct ConstantIdx(pub usize);
+
+#[derive(Clone, Copy, Debug)]
+pub struct StackIdx(pub usize);
+
+#[derive(Clone, Copy, Debug)]
+pub struct CodeIdx(pub usize);
+
+#[derive(Clone, Copy, Debug)]
+pub struct CodeOffset(pub usize);
+
+#[derive(Debug)]
+pub enum OpCode {
+    /// Push a constant onto the stack.
+    OpConstant(ConstantIdx),
+
+    // Literal pushes
+    OpNil,
+    OpTrue,
+    OpFalse,
+
+    /// Return from the current function.
+    OpReturn,
+
+    // Boolean & comparison operators
+    OpNot,
+    OpEqual,
+    OpGreater,
+    OpLess,
+
+    /// Unary negation
+    OpNegate,
+
+    // Arithmetic operators
+    OpAdd,
+    OpSubtract,
+    OpMultiply,
+    OpDivide,
+
+    // Built in operations
+    OpPrint,
+    OpPop,
+
+    // Variable management
+    OpDefineGlobal(ConstantIdx),
+    OpGetGlobal(ConstantIdx),
+    OpSetGlobal(ConstantIdx),
+    OpGetLocal(StackIdx),
+    OpSetLocal(StackIdx),
+
+    // Control flow
+    OpJumpPlaceholder(bool),
+    OpJump(CodeOffset),
+    OpJumpIfFalse(CodeOffset),
+}