Added: NormalTextStyle

Sources/DiffableTextKit/Models/Proposal.swift

@@ -70,7 +70,7 @@ public struct Proposal {
         /// Returns a lazy snapshot with the proposed change applied to it.
         @inlinable public func merged() -> LazySequence<FlattenSequence<[Slice<Snapshot>]>> {[
             proposal.base[..<proposal.range.lowerBound],
-            proposal.replacement[...], /*-------------*/
+            proposal.replacement[...],
             proposal.base[proposal.range.upperBound...]].lazy.joined()
         }
     }

Sources/DiffableTextKit/Styles/Normal.swift

@@ -0,0 +1,52 @@
+//=----------------------------------------------------------------------------=
+// This source file is part of the DiffableTextViews open source project.
+//
+// Copyright (c) 2022 Oscar Byström Ericsson
+// Licensed under Apache License, Version 2.0
+//
+// See http://www.apache.org/licenses/LICENSE-2.0 for license information.
+//=----------------------------------------------------------------------------=
+
+//*============================================================================*
+// MARK: * Normal
+//*============================================================================*
+
+/// A normal text style, without bells and whistles.
+public struct NormalTextStyle: DiffableTextStyle {
+
+    //=------------------------------------------------------------------------=
+    // MARK: Initializers
+    //=------------------------------------------------------------------------=
+
+    @inlinable @inline(__always) public init() {  }
+
+    //=------------------------------------------------------------------------=
+    // MARK: Utilities
+    //=------------------------------------------------------------------------=
+
+    @inlinable @inline(__always) public func format(_ value: String, with cache: inout Void) -> String {
+        value
+    }
+
+    @inlinable public func interpret(_ value: String, with cache: inout Void) -> Commit<String> {
+        Commit(value, Snapshot(value))
+    }
+
+    @inlinable public func resolve(_ proposal: Proposal, with cache: inout Void) throws -> Commit<String> {
+        let S0 = Snapshot(proposal.lazy.merged().nonvirtuals()); return Commit(S0.characters, S0)
+    }
+}
+
+//*============================================================================*
+// MARK: * Normal x Init
+//*============================================================================*
+
+extension DiffableTextStyle where Self == NormalTextStyle {
+
+    //=------------------------------------------------------------------------=
+    // MARK: Initializers
+    //=------------------------------------------------------------------------=
+
+    /// A normal text style, without bells and whistles.
+    @inlinable @inline(__always) public static var normal: Self { .init() }
+}

Sources/DiffableTextKitXPattern/Style.swift

@@ -210,7 +210,7 @@ extension PatternTextStyle {
             //=----------------------------------=
             // Position == Placeholder
             //=----------------------------------=
-            if let predicate = placeholders[pattern[qIndex]] {
+            if  let predicate = placeholders[pattern[qIndex]] {
                 guard cIndex != content.endIndex else { break matches }
                 let nonvirtual = content[cIndex]
                 guard predicate(nonvirtual) /**/ else { break matches }

Sources/DiffableTextViews/Exports.swift

@@ -18,6 +18,8 @@
 
 @_exported import struct DiffableTextKit.EqualsTextStyle
 
+@_exported import struct DiffableTextKit.NormalTextStyle
+
 @_exported import struct DiffableTextKit.StandaloneTextStyle
 
 @_exported import struct DiffableTextKit.PrefixTextStyle

Tests/DiffableTextKitTests/Styles/Normal.swift

@@ -0,0 +1,52 @@
+//=----------------------------------------------------------------------------=
+// This source file is part of the DiffableTextViews open source project.
+//
+// Copyright (c) 2022 Oscar Byström Ericsson
+// Licensed under Apache License, Version 2.0
+//
+// See http://www.apache.org/licenses/LICENSE-2.0 for license information.
+//=----------------------------------------------------------------------------=
+
+#if DEBUG
+
+@testable import DiffableTextKit
+
+import XCTest
+
+//*============================================================================*
+// MARK: * Normal x Tests
+//*============================================================================*
+
+final class NormalTests: XCTestCase {
+
+    //=------------------------------------------------------------------------=
+    // MARK: State
+    //=------------------------------------------------------------------------=
+
+    let normal = NormalTextStyle()
+
+    //=------------------------------------------------------------------------=
+    // MARK: Tests
+    //=------------------------------------------------------------------------=
+
+    func testFormat() {
+        XCTAssertEqual(normal.format("2"), "2")
+    }
+
+    func testInterpret() {
+        XCTAssertEqual(normal.interpret("3"), Commit("3", "3"))
+    }
+
+    func testResolve() {
+        let base = Snapshot("13") + Snapshot("o(><)o", as: .phantom)
+        let middle = base.index(base.startIndex, offsetBy: 1)
+        let proposal = Proposal(base, with: "2", in: middle ..< middle)
+
+        let resolved = try! normal.resolve(proposal)
+
+        XCTAssertEqual(resolved.value,    "123")
+        XCTAssertEqual(resolved.snapshot, "123")
+    }
+}
+
+#endif