Add flag for model printing

library/src/structure/list.rs

@@ -144,7 +144,7 @@ impl<const L: ListKind> LayoutBlock for ListNode<L> {
 }
 
 /// An item in a list.
-#[derive(Clone, PartialEq, Hash)]
+#[derive(Debug, Clone, Hash)]
 pub enum ListItem {
     /// An item of an unordered list.
     List(Box<Content>),
@@ -183,24 +183,11 @@ impl ListItem {
     }
 }
 
-impl Debug for ListItem {
-    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
-        match self {
-            Self::List(body) => write!(f, "- {body:?}"),
-            Self::Enum(number, body) => match number {
-                Some(n) => write!(f, "{n}. {body:?}"),
-                None => write!(f, "+ {body:?}"),
-            },
-            Self::Desc(item) => item.fmt(f),
-        }
-    }
-}
-
 #[node]
 impl ListItem {}
 
 /// A description list item.
-#[derive(Clone, PartialEq, Hash)]
+#[derive(Debug, Clone, Hash)]
 pub struct DescItem {
     /// The term described by the list item.
     pub term: Content,
@@ -218,12 +205,6 @@ castable! {
     },
 }
 
-impl Debug for DescItem {
-    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
-        write!(f, "/ {:?}: {:?}", self.term, self.body)
-    }
-}
-
 /// How to label a list.
 pub type ListKind = usize;
 

tests/src/tests.rs

@@ -7,7 +7,7 @@ use std::io::Read;
 use std::ops::Range;
 use std::path::{Path, PathBuf};
 
-use comemo::Prehashed;
+use comemo::{Prehashed, Track};
 use elsa::FrozenVec;
 use once_cell::unsync::OnceCell;
 use tiny_skia as sk;
@@ -100,6 +100,7 @@ struct Args {
 #[derive(Default, Copy, Clone, Eq, PartialEq)]
 struct PrintConfig {
     syntax: bool,
+    model: bool,
     frames: bool,
 }
 
@@ -120,6 +121,8 @@ impl Args {
                 "--pdf" => pdf = true,
                 // Debug print the syntax trees.
                 "--syntax" => print.syntax = true,
+                // Debug print the model.
+                "--model" => print.model = true,
                 // Debug print the frames.
                 "--frames" => print.frames = true,
                 // Everything else is a file filter.
@@ -355,7 +358,7 @@ fn test(
 
         if world.print.frames {
             for frame in &frames {
-                println!("Frame: {:#?}", frame);
+                println!("Frame:\n{:#?}\n", frame);
             }
         }
 
@@ -405,7 +408,7 @@ fn test_part(
     let id = world.set(src_path, text);
     let source = world.source(id);
     if world.print.syntax {
-        println!("Syntax Tree: {:#?}", source.root())
+        println!("Syntax Tree:\n{:#?}\n", source.root())
     }
 
     let (local_compare_ref, mut ref_errors) = parse_metadata(&source);
@@ -414,6 +417,13 @@ fn test_part(
     ok &= test_spans(source.root());
     ok &= test_reparse(world.source(id).text(), i, rng);
 
+    if world.print.model {
+        let tracked = (world as &dyn World).track();
+        let route = typst::model::Route::default();
+        let module = typst::model::eval(tracked, route.track(), id).unwrap();
+        println!("Model:\n{:#?}\n", module.content);
+    }
+
     let (mut frames, errors) = match typst::typeset(world, id) {
         Ok(frames) => (frames, vec![]),
         Err(errors) => (vec![], *errors),