fix

Cargo.lock

@@ -86,9 +86,9 @@ dependencies = [
 
 [[package]]
 name = "dbg-pls"
-version = "0.2.2"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e845b944ea4a6b446aec7c221c48fd6e73f2ab38e1af720cac0f47895dcc4580"
+checksum = "96fb680d63b394b942cb518404505ab0610e51e5be82af6818b45aae888064d9"
 dependencies = [
  "dbg-pls-derive",
  "itoa",
@@ -104,9 +104,9 @@ dependencies = [
 
 [[package]]
 name = "dbg-pls-derive"
-version = "0.2.1"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b46318b37603779055a193fbb0454bb762e284f72a4d3c231f4a6ab8d3eede31"
+checksum = "18ad0d32e09e083b0bf764cc9c2f1956518afb16b6ae0e1110c909d056f8271f"
 dependencies = [
  "proc-macro2",
  "quote",

Cargo.toml

@@ -7,7 +7,7 @@ edition = "2021"
 
 [dependencies]
 bumpalo = { version = "3.8.0", features = ["collections"] }
-dbg-pls = { version = "0.2.2", features = ["colors", "derive"], optional = true }
+dbg-pls = { version = "0.3.0", features = ["colors", "derive"], optional = true }
 rustc-hash = { version = "1.1.0", optional = true }
 
 

src/bytecode.rs

@@ -64,7 +64,6 @@ use bumpalo::collections::Vec;
 use std::fmt::{Debug, Formatter};
 
 /// This struct contains all data for a function.
-#[cfg_attr(feature = "_debug", derive(dbg_pls::DebugPls))]
 pub struct FnBlock<'bc> {
     /// The bytecode of the function
     pub code: Vec<'bc, Instr>,
@@ -136,3 +135,13 @@ pub enum Instr {
     /// Shrinks the stack by `usize` elements, should always be emitted before backwards jumps
     ShrinkStack(usize),
 }
+
+#[cfg(feature = "_debug")]
+impl dbg_pls::DebugPls for FnBlock<'_> {
+    fn fmt(&self, f: dbg_pls::Formatter<'_>) {
+        f.debug_struct("FnBlock")
+            .field("arity", &self.arity)
+            .field("code", &self.code.as_slice())
+            .finish_non_exhaustive()
+    }
+}

src/gc.rs

@@ -4,6 +4,7 @@
 
 use crate::vm::Value;
 use crate::{HashMap, HashSet};
+use dbg_pls::DebugPls;
 use std::collections::LinkedList;
 use std::fmt::{Debug, Formatter};
 use std::hash::{Hash, Hasher};
@@ -19,9 +20,9 @@ pub struct Gc<T: ?Sized> {
 }
 
 #[cfg(feature = "_debug")]
-impl<T: ?Sized> dbg_pls::DebugPls for Gc<T> {
+impl<T: ?Sized + DebugPls> dbg_pls::DebugPls for Gc<T> {
     fn fmt(&self, f: dbg_pls::Formatter<'_>) {
-        todo!()
+        DebugPls::fmt(self.deref(), f)
     }
 }
 
@@ -208,7 +209,7 @@ impl Deref for Symbol {
 
 impl Debug for Symbol {
     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
-        self.as_str().fmt(f)
+        Debug::fmt(self.as_str(), f)
     }
 }
 

src/lib.rs

@@ -69,7 +69,7 @@ fn process_ast(program: &str, ast: &Program, mut runtime: RtAlloc, cfg: &mut Con
     match bytecode {
         Ok(code) => {
             if cfg.debug {
-                println!("Bytecode:\n{:#?}\n", code);
+                util::dbg("Bytecode:\n", code);
             }
 
             let result = vm::execute(code, runtime, cfg);