chore: comment

evaluator/nixjit_eval/src/value/string.rs

@@ -1,10 +1,19 @@
+//! Defines a placeholder for Nix's contextful strings.
+//!
+//! In Nix, strings can carry a "context" which affects how they are
+//! handled, particularly with regards to path resolution. This module
+//! provides the basic structures for this feature, although it is
+//! currently a work in progress.
+
 // TODO: Contextful String
 
+/// Represents the context associated with a string.
 pub struct StringContext {
     context: Vec<()>,
 }
 
 impl StringContext {
+    /// Creates a new, empty `StringContext`.
     pub fn new() -> StringContext {
         StringContext {
             context: Vec::new(),
@@ -12,12 +21,14 @@ impl StringContext {
     }
 }
 
+/// A string that carries an associated context.
 pub struct ContextfulString {
     string: String,
     context: StringContext,
 }
 
 impl ContextfulString {
+    /// Creates a new `ContextfulString` from a standard `String`.
     pub fn new(string: String) -> ContextfulString {
         ContextfulString {
             string,