Refine inlining.

src/func/func.rs

@@ -46,6 +46,7 @@ pub trait Func<ARGS, RET> {
     /// func(123, "hello")? == false;           // call the anonymous function
     /// # Ok(())
     /// # }
+    #[must_use]
     fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output;
 
     /// Create a Rust closure from a script.
@@ -79,6 +80,7 @@ pub trait Func<ARGS, RET> {
     /// # Ok(())
     /// # }
     /// ```
+    #[must_use]
     fn create_from_script(self, script: &str, entry_point: &str) -> ParseResult<Self::Output>;
 }
 

src/func/hashing.rs

@@ -41,6 +41,7 @@ pub struct StraightHasher(u64);
 
 impl Hasher for StraightHasher {
     #[inline(always)]
+    #[must_use]
     fn finish(&self) -> u64 {
         self.0
     }
@@ -66,6 +67,7 @@ impl BuildHasher for StraightHasherBuilder {
     type Hasher = StraightHasher;
 
     #[inline(always)]
+    #[must_use]
     fn build_hasher(&self) -> Self::Hasher {
         StraightHasher(ALT_ZERO_HASH)
     }

src/func/register.rs

@@ -86,8 +86,11 @@ pub trait RegisterNativeFunction<ARGS, RET, RESULT> {
     /// _(metadata)_ Get the type name of this function's return value.
     /// Exported under the `metadata` feature only.
     #[cfg(feature = "metadata")]
+    #[inline(always)]
     #[must_use]
-    fn return_type_name() -> &'static str;
+    fn return_type_name() -> &'static str {
+        std::any::type_name::<RET>()
+    }
 }
 
 const EXPECT_ARGS: &str = "arguments";
@@ -138,7 +141,6 @@ macro_rules! def_register {
             #[inline(always)] fn param_types() -> Box<[TypeId]> { vec![$(TypeId::of::<$par>()),*].into_boxed_slice() }
             #[cfg(feature = "metadata")] #[inline(always)] fn param_names() -> Box<[&'static str]> { vec![$(std::any::type_name::<$param>()),*].into_boxed_slice() }
             #[cfg(feature = "metadata")] #[inline(always)] fn return_type() -> TypeId { TypeId::of::<RET>() }
-            #[cfg(feature = "metadata")] #[inline(always)] fn return_type_name() -> &'static str { std::any::type_name::<RET>() }
             #[inline(always)] fn into_callable_function(self) -> CallableFunction {
                 CallableFunction::$abi(Shared::new(move |_ctx: NativeCallContext, args: &mut FnCallArgs| {
                     // The arguments are assumed to be of the correct number and types!
@@ -164,7 +166,6 @@ macro_rules! def_register {
             #[inline(always)] fn param_types() -> Box<[TypeId]> { vec![$(TypeId::of::<$par>()),*].into_boxed_slice() }
             #[cfg(feature = "metadata")] #[inline(always)] fn param_names() -> Box<[&'static str]> { vec![$(std::any::type_name::<$param>()),*].into_boxed_slice() }
             #[cfg(feature = "metadata")] #[inline(always)] fn return_type() -> TypeId { TypeId::of::<RET>() }
-            #[cfg(feature = "metadata")] #[inline(always)] fn return_type_name() -> &'static str { std::any::type_name::<RET>() }
             #[inline(always)] fn into_callable_function(self) -> CallableFunction {
                 CallableFunction::$abi(Shared::new(move |ctx: NativeCallContext, args: &mut FnCallArgs| {
                     // The arguments are assumed to be of the correct number and types!

src/func/script.rs

@@ -251,12 +251,9 @@ impl Engine {
             // Then check sub-modules
             || self.global_sub_modules.values().any(|m| m.contains_qualified_fn(hash_script));
 
-        if !result {
-            if cache.filter.is_absent(hash_script) {
-                cache.filter.mark(hash_script);
-            } else {
-                cache.map.insert(hash_script, None);
-            }
+        if !result && !cache.filter.is_absent_and_set(hash_script) {
+            // Do not cache "one-hit wonders"
+            cache.map.insert(hash_script, None);
         }
 
         result