bendns' repos / treaty
Diffstat (limited to 'src/build/builders/debug.rs')
-rw-r--r--src/build/builders/debug.rs101
1 files changed, 101 insertions, 0 deletions
diff --git a/src/build/builders/debug.rs b/src/build/builders/debug.rs
new file mode 100644
index 0000000..7cf0aad
--- /dev/null
+++ b/src/build/builders/debug.rs
@@ -0,0 +1,101 @@
+use core::{any::TypeId, marker::PhantomData, ops::ControlFlow};
+
+use crate::{
+ any::{static_wrapper::OwnedStatic, LtTypeId},
+ any_trait,
+ effect::{Effect, Future},
+ protocol::{visitor::{
+ tag::{Dyn, Tag},
+ value::Value, request_hint::RequestHint,
+ }, self},
+ DynWalker,
+};
+
+pub struct Walker<E>(usize, PhantomData<fn() -> E>);
+
+any_trait! {
+ impl['a, 'ctx, E] Walker<E> = [
+ dyn RequestHint<'ctx, Effect = E> + 'a,
+ dyn Tag<'ctx, Dyn, Effect = E> + 'a,
+ dyn Value<'a, 'ctx, OwnedStatic<&'static str>, Effect = E> + 'a,
+ dyn Value<'a, 'ctx, OwnedStatic<TypeId>, Effect = E> + 'a,
+ ] else fallback where E: Effect<'ctx>
+}
+
+fn fallback(id: LtTypeId<'_>) {
+ println!("Unknown trait: {}", id);
+}
+
+impl<'ctx, E: Effect<'ctx>> Walker<E> {
+ pub fn new() -> Self {
+ Self(0, PhantomData)
+ }
+
+ fn tab(&self) {
+ for _ in 0..self.0 {
+ print!(" ");
+ }
+ }
+}
+
+impl<'ctx, E: Effect<'ctx>> RequestHint<'ctx> for Walker<E> {
+ type Effect = E;
+
+ fn request_hint<'a>(
+ &'a mut self,
+ _walker: crate::protocol::Walker<'a, 'ctx>,
+ ) -> Future<'a, 'ctx, ControlFlow<(), ()>, Self::Effect>
+ where
+ Self: 'a
+ {
+ self.tab();
+ println!("Visit request hint (no hint given)");
+ E::wrap(async { ControlFlow::Continue(()) })
+ }
+}
+
+impl<'ctx, E: Effect<'ctx>> Tag<'ctx, Dyn> for Walker<E> {
+ type Effect = E;
+
+ fn visit<'a>(
+ &'a mut self,
+ kind: Dyn,
+ walker: &'a mut dyn DynWalker<'ctx, Effect = Self::Effect>,
+ ) -> Future<'a, 'ctx, ControlFlow<(), protocol::visitor::tag::Status>, Self::Effect>
+ where
+ Self: 'a,
+ {
+ self.tab();
+ println!("Visit tag: {}", kind.0);
+
+ E::wrap(async {
+ self.0 += 1;
+ let result = walker.walk(self).await;
+ self.0 -= 1;
+ match result {
+ ControlFlow::Continue(()) => ControlFlow::Continue(protocol::visitor::tag::Status::Walked),
+ ControlFlow::Break(()) => ControlFlow::Break(()),
+ }
+ })
+ }
+}
+
+impl<'a, 'ctx: 'a, E: Effect<'ctx>> Value<'a, 'ctx, OwnedStatic<&'static str>> for Walker<E> {
+ type Effect = E;
+
+ fn visit(&'a mut self, OwnedStatic(value): OwnedStatic<&'static str>) -> Future<'a, 'ctx, ControlFlow<(), ()>, Self::Effect> where Self: 'a {
+ self.tab();
+ println!("Visit static str: {:?}", value);
+ E::wrap(async { ControlFlow::Continue(()) })
+ }
+}
+
+impl<'a, 'ctx: 'a, E: Effect<'ctx>> Value<'a, 'ctx, OwnedStatic<TypeId>> for Walker<E> {
+ type Effect = E;
+
+ fn visit(&'a mut self, OwnedStatic(value): OwnedStatic<TypeId>) -> Future<'a, 'ctx, ControlFlow<(), ()>, Self::Effect> where Self: 'a {
+ self.tab();
+ println!("Visit type ID: {:?}", value);
+ E::wrap(async { ControlFlow::Continue(()) })
+ }
+}