Add basic tracing

crates/concoct/Cargo.toml

@@ -7,13 +7,13 @@ description = "Cross-platform UI framework"
 repository = "https://github.com/concoct-rs/concoct"
 
 [features]
-full = []
+full = ["tracing"]
 
 [dependencies]
 futures = "0.3.30"
 rustc-hash = "1.1.0"
 slotmap = "1.0.7"
-tracing = "0.1.40"
+tracing = { version ="0.1.40", optional = true }
 
 [package.metadata.docs.rs]
 features = ["full"]

crates/concoct/src/lib.rs

@@ -31,6 +31,9 @@ use std::cell::RefCell;
 
 pub mod hook;
 
+#[macro_use]
+pub(crate) mod macros;
+
 mod rt;
 pub(crate) use self::rt::{Runtime, Scope};
 

crates/concoct/src/macros.rs

@@ -0,0 +1,8 @@
+//! Internal macros
+
+macro_rules! trace {
+ ($($tt:tt)*) => {
+ #[cfg(feature = "tracing")]
+ tracing::trace!($($tt)*)
+ }
+}

crates/concoct/src/tree/node.rs

@@ -1,6 +1,9 @@
 use crate::{Runtime, Scope, Tree, ViewBuilder};
 use slotmap::DefaultKey;
-use std::{any::Any, mem};
+use std::{
+ any::{self, Any},
+ mem,
+};
 
 pub struct Node<V, B, F> {
  pub(crate) view: V,
@@ -33,6 +36,8 @@ where
  cx_ref.scope = Some(self.scope.clone().unwrap());
  drop(cx_ref);
 
+ trace!("rebuilding from {}", any::type_name::<V>());
+
  let view = unsafe { mem::transmute(&self.view) };
  let body = (self.builder)(view);
 
@@ -60,6 +65,8 @@ where
  cx_ref.scope = Some(self.scope.clone().unwrap());
  drop(cx_ref);
 
+ trace!("building {}", any::type_name::<V>());
+
  let view = unsafe { mem::transmute(&self.view) };
  let body = (self.builder)(view);
 
@@ -100,6 +107,8 @@ where
  cx_ref.scope = Some(self.scope.clone().unwrap());
  drop(cx_ref);
 
+ trace!("rebuilding {}", any::type_name::<V>());
+
  let view = unsafe { mem::transmute(&self.view) };
  let body = (self.builder)(view);
 
@@ -120,11 +129,15 @@ where
  let mut cx_ref = cx.inner.borrow_mut();
  cx_ref.contexts = parent_contexts;
  } else {
+ trace!("skipping {}", any::type_name::<V>());
+
  self.body = last.body.take();
  }
  }
 
  unsafe fn remove(&mut self) {
+ trace!("removing {}", any::type_name::<V>());
+
  let cx = Runtime::current();
  let mut cx_ref = cx.inner.borrow_mut();
  let key = self.key.unwrap();