Refactor execution context 🏗

- The execution context is a lot more structured: Instead of a magic stack of arbitrary objects there are static objects for pages, stacks and paragraphs
- Page softness/keeping mechanic is now a lot simpler than before

1 files changed, 3 insertions, 8 deletions

diff --git a/src/library/page.rs b/src/library/page.rs
index 4ab92b31..963ab913 100644
--- a/src/library/page.rs
+++ b/src/library/page.rs
@@ -83,25 +83,20 @@ pub fn page(ctx: &mut EvalContext, args: &mut ValueArgs) -> Value {
         }
 
         ctx.set_dirs(Gen::new(main, cross));
+        ctx.finish_page(false, Softness::Hard);
 
-        let mut softness = ctx.end_page_group(|_| false);
         if let Some(body) = &body {
             // TODO: Restrict body to a single page?
-            ctx.start_page_group(Softness::Hard);
             body.exec(ctx);
-            ctx.end_page_group(|s| s == Softness::Hard);
-            softness = Softness::Soft;
             ctx.state = snapshot;
+            ctx.finish_page(true, Softness::Soft);
         }
-
-        ctx.start_page_group(softness);
     })
 }
 
 /// `pagebreak`: Start a new page.
 pub fn pagebreak(_: &mut EvalContext, _: &mut ValueArgs) -> Value {
     Value::template("pagebreak", move |ctx| {
-        ctx.end_page_group(|_| true);
-        ctx.start_page_group(Softness::Hard);
+        ctx.finish_page(true, Softness::Hard);
     })
 }