Add doc comments.

src/engine.rs

@@ -818,12 +818,19 @@ impl EvalState {
 /// Context of a script evaluation process.
 #[derive(Debug)]
 pub struct EvalContext<'a, 'x, 'px, 'm, 's, 'b, 't, 'pt> {
+    /// The current [`Engine`].
     pub(crate) engine: &'a Engine,
+    /// The current [`Scope`].
     pub(crate) scope: &'x mut Scope<'px>,
+    /// The current [`GlobalRuntimeState`].
     pub(crate) global: &'m mut GlobalRuntimeState,
+    /// The current [evaluation state][EvalState].
     pub(crate) state: &'s mut EvalState,
+    /// The current stack of imported [modules][Module].
     pub(crate) lib: &'b [&'b Module],
+    /// The current bound `this` pointer, if any.
     pub(crate) this_ptr: &'t mut Option<&'pt mut Dynamic>,
+    /// The current nesting level of function calls.
     pub(crate) level: usize,
 }
 

src/func/native.rs

@@ -58,11 +58,17 @@ pub type LockGuard<'a, T> = std::sync::RwLockWriteGuard<'a, T>;
 /// Context of a native Rust function call.
 #[derive(Debug)]
 pub struct NativeCallContext<'a> {
+    /// The current [`Engine`].
     engine: &'a Engine,
+    /// Name of function called.
     fn_name: &'a str,
+    /// Function source, if any.
     source: Option<&'a str>,
+    /// The current [`GlobalRuntimeState`], if any.
     global: Option<&'a GlobalRuntimeState>,
+    /// The current stack of loaded [modules][Module].
     lib: &'a [&'a Module],
+    /// [Position] of the function call.
     pos: Position,
 }
 
@@ -174,7 +180,7 @@ impl<'a> NativeCallContext<'a> {
     pub const fn fn_name(&self) -> &str {
         self.fn_name
     }
-    /// [Position][`Position`] of the function call.
+    /// [Position] of the function call.
     #[inline(always)]
     #[must_use]
     pub const fn position(&self) -> Position {
@@ -204,7 +210,7 @@ impl<'a> NativeCallContext<'a> {
     ) -> impl Iterator<Item = (&crate::Identifier, &Shared<Module>)> {
         self.global.iter().flat_map(|&m| m.iter_modules_raw())
     }
-    /// _(internals)_ The current [`GlobalRuntimeState`].
+    /// _(internals)_ The current [`GlobalRuntimeState`], if any.
     /// Exported under the `internals` feature only.
     ///
     /// Not available under `no_module`.