make Debug print easier to read

src/main.rs

@@ -87,6 +87,10 @@ fn main () {
 			match input.as_str ().trim_end () {
 				"c" => in_break = false,
 				"q" => return,
+				"registers" => {
+					dbg! (&vm.registers);
+					continue;
+				}
 				"s" => {
 					match vm.step () {
 						None => (),

src/state.rs

@@ -48,7 +48,7 @@ pub struct Breakpoint {
 
 #[derive (Debug)]
 pub struct State <'a> {
-	registers: Vec <Value>,
+	pub registers: Vec <Value>,
 	// Currently only used for native function calls
 	top: usize,
 	pub stack: Vec <StackFrame>,

src/value.rs

@@ -15,7 +15,7 @@ pub struct BogusClosure {
 	pub upvalues: Vec <Value>,
 }
 
-#[derive (Clone, Debug, PartialEq)]
+#[derive (Clone, PartialEq)]
 pub enum Value {
 	Nil,
 	Boolean (bool),
@@ -35,6 +35,23 @@ pub enum Value {
 	BogusClosure (Rc <RefCell <BogusClosure>>),
 }
 
+impl fmt::Debug for Value {
+	fn fmt (&self, f: &mut fmt::Formatter) -> fmt::Result {
+		match self {
+			Value::Nil => write! (f, "nil"),
+			Value::Boolean (false) => write! (f, "false"),
+			Value::Boolean (true) => write! (f, "true"),
+			Value::Float (x) => write! (f, "{:?}", x),
+			Value::Integer (x) => write! (f, "{}", x),
+			Value::RsFunc (x) => write! (f, "function: {:?}", x),
+			Value::String (s) => write! (f, "{}", s),
+			Value::Table (t) => write! (f, "{:?}", t.borrow ()),
+			
+			Value::BogusClosure (x) => write! (f, "{:?}", x.borrow ()),
+		}
+	}
+}
+
 impl Default for Value {
 	fn default () -> Self {
 		Self::Nil
@@ -213,12 +230,20 @@ impl Value {
 	}
 }
 
-#[derive (Debug, Default, Eq, PartialEq)]
+#[derive (Default, Eq, PartialEq)]
 pub struct Table {
 	array: Vec <Value>,
 	hash: HashMap <Value, Value>,
 }
 
+impl fmt::Debug for Table {
+	fn fmt (&self, f: &mut fmt::Formatter) -> fmt::Result {
+		write! (f, "Table {:#?}", self.hash)?;
+		
+		Ok (())
+	}
+}
+
 impl Table {
 	fn get_inner (&self, key: &Value) -> Value {
 		self.hash.get (key).cloned ().unwrap_or_default ()