Mini-rework: cleanup.

Author: oscbyspro

Sources/DiffableTextKit/Helpers/Range.swift

@@ -34,7 +34,7 @@ extension Range {
         //=--------------------------------------=
         // MARK: Return
         //=--------------------------------------=
-        from(source, lower: bound, upper: bound)
+        Self.from(source, lower: bound, upper: bound)
     }
 
     @inlinable static func from<T>(_ source: Range<T>,
@@ -54,6 +54,6 @@ extension Range {
         //=--------------------------------------=
         // MARK: Return
         //=--------------------------------------=
-        return .unchecked((lowerBound, upperBound))
+        return Self(uncheckedBounds: (lowerBound, upperBound))
     }
 }

Sources/DiffableTextKit/Models/Changes.swift

@@ -20,15 +20,16 @@ public struct Changes {
 
     public let snapshot: Snapshot
     public var replacement: Snapshot
-    public var indices: Range<Index>
+    public var range: Range<Index>
 
     //=------------------------------------------------------------------------=
     // MARK: Initializers
     //=------------------------------------------------------------------------=
 
-    @inlinable init(_ snapshot: Snapshot, with characters: String, at indices: Range<Index>) {
-        self.snapshot = snapshot; self.indices = indices
+    @inlinable init(_ snapshot: Snapshot, with characters: String, in range: Range<Index>) {
+        self.snapshot = snapshot
         self.replacement = Snapshot(characters, as: .content)
+        self.range = range
     }
 
     //=------------------------------------------------------------------------=
@@ -37,6 +38,8 @@ public struct Changes {
 
     /// Returns a new snapshot with the proposed change applied to it.
     @inlinable public func proposal() -> Snapshot {
-        var result = snapshot; result.replaceSubrange(indices, with: replacement); return result
+        var proposal = snapshot
+        proposal.replaceSubrange(range, with: replacement)
+        return proposal
     }
 }

Sources/DiffableTextKit/Models/Context.swift

@@ -11,9 +11,9 @@
 // MARK: * Context
 //*============================================================================*
 
-/// Values describing the state of a diffable text view.
+/// A set of values describing the state of a diffable text view.
 ///
-/// - Copy-on-write.
+/// - Uses copy-on-write.
 ///
 public struct Context<Style: DiffableTextStyle> {
     public typealias Commit = DiffableTextKit.Commit<Value>
@@ -222,13 +222,13 @@ public extension Context {
         //=--------------------------------------=
         // MARK: Values
         //=--------------------------------------=
-        let indices = snapshot.indices(at: range)
+        let range = snapshot.indices(at: range)
         let commit = try style.merge(Changes(
-        snapshot, with: characters, at: indices))
+        snapshot, with: characters, in: range))
         //=--------------------------------------=
         // MARK: Update
         //=--------------------------------------=
-        self.set(selection: indices.upperBound)
+        self.set(selection: range.upperBound)
         self.merge(Self.focused(style, commit))
     }