1 files changed, 35 insertions, 36 deletions

diff --git a/src/lib.rs b/src/lib.rs
index b622326..c0f742a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,17 @@
 #![doc = include_str!("../README.md")]
+#![warn(
+    elided_lifetimes_in_paths,
+    explicit_outlives_requirements,
+    missing_debug_implementations,
+    noop_method_call,
+    single_use_lifetimes,
+    trivial_casts,
+    trivial_numeric_casts,
+    unreachable_pub,
+    unsafe_code,
+    unused_crate_dependencies,
+    unused_qualifications
+)]
 #![warn(clippy::pedantic, clippy::cargo)]
 
 #[cfg(feature = "parse-knuffel")]
@@ -26,43 +39,43 @@ pub struct Schema {
 
 impl Schema {
     /// Panics if ref is not of the form `[id="foo"]`.
+    #[must_use]
     pub fn resolve_node_ref(&self, r#ref: &str) -> Option<&Node> {
         let id = get_id_from_ref(r#ref).expect("invalid ref");
         self.document
             .nodes
             .iter()
-            .filter_map(|node| node.find_node_by_id(id))
-            .next()
+            .find_map(|node| node.find_node_by_id(id))
     }
 
     /// Panics if ref is not of the form `[id="foo"]`.
+    #[must_use]
     pub fn resolve_prop_ref(&self, r#ref: &str) -> Option<&Prop> {
         let id = get_id_from_ref(r#ref).expect("invalid ref");
         self.document
             .nodes
             .iter()
-            .filter_map(|node| node.find_prop_by_id(id))
-            .next()
+            .find_map(|node| node.find_prop_by_id(id))
     }
 
     /// Panics if ref is not of the form `[id="foo"]`.
+    #[must_use]
     pub fn resolve_value_ref(&self, r#ref: &str) -> Option<&Value> {
         let id = get_id_from_ref(r#ref).expect("invalid ref");
         self.document
             .nodes
             .iter()
-            .filter_map(|node| node.find_value_by_id(id))
-            .next()
+            .find_map(|node| node.find_value_by_id(id))
     }
 
     /// Panics if ref is not of the form `[id="foo"]`.
+    #[must_use]
     pub fn resolve_children_ref(&self, r#ref: &str) -> Option<&Children> {
         let id = get_id_from_ref(r#ref).expect("invalid ref");
         self.document
             .nodes
             .iter()
-            .filter_map(|node| node.find_children_by_id(id))
-            .next()
+            .find_map(|node| node.find_children_by_id(id))
     }
 }
 
@@ -186,40 +199,36 @@ impl Node {
         } else {
             self.children
                 .iter()
-                .filter_map(|children| children.find_node_by_id(id))
-                .next()
+                .find_map(|children| children.find_node_by_id(id))
         }
     }
 
     fn find_prop_by_id(&self, id: &str) -> Option<&Prop> {
         self.props
             .iter()
-            .filter_map(|prop| prop.find_prop_by_id(id))
-            .chain(
+            .find_map(|prop| prop.find_prop_by_id(id))
+            .or_else(|| {
                 self.children
                     .iter()
-                    .filter_map(|children| children.find_prop_by_id(id)),
-            )
-            .next()
+                    .find_map(|children| children.find_prop_by_id(id))
+            })
     }
 
     fn find_value_by_id(&self, id: &str) -> Option<&Value> {
         self.values
             .iter()
-            .filter_map(|value| value.find_value_by_id(id))
-            .chain(
+            .find_map(|value| value.find_value_by_id(id))
+            .or_else(|| {
                 self.children
                     .iter()
-                    .filter_map(|children| children.find_value_by_id(id)),
-            )
-            .next()
+                    .find_map(|children| children.find_value_by_id(id))
+            })
     }
 
     fn find_children_by_id(&self, id: &str) -> Option<&Children> {
         self.children
             .iter()
-            .filter_map(|children| children.find_children_by_id(id))
-            .next()
+            .find_map(|children| children.find_children_by_id(id))
     }
 }
 
@@ -319,24 +328,15 @@ pub struct Children {
 
 impl Children {
     fn find_node_by_id(&self, id: &str) -> Option<&Node> {
-        self.nodes
-            .iter()
-            .filter_map(|node| node.find_node_by_id(id))
-            .next()
+        self.nodes.iter().find_map(|node| node.find_node_by_id(id))
     }
 
     fn find_prop_by_id(&self, id: &str) -> Option<&Prop> {
-        self.nodes
-            .iter()
-            .filter_map(|node| node.find_prop_by_id(id))
-            .next()
+        self.nodes.iter().find_map(|node| node.find_prop_by_id(id))
     }
 
     fn find_value_by_id(&self, id: &str) -> Option<&Value> {
-        self.nodes
-            .iter()
-            .filter_map(|node| node.find_value_by_id(id))
-            .next()
+        self.nodes.iter().find_map(|node| node.find_value_by_id(id))
     }
 
     fn find_children_by_id(&self, id: &str) -> Option<&Children> {
@@ -345,8 +345,7 @@ impl Children {
         } else {
             self.nodes
                 .iter()
-                .filter_map(|node| node.find_children_by_id(id))
-                .next()
+                .find_map(|node| node.find_children_by_id(id))
         }
     }
 }