Intermediate checkpoint.

Author: oscbyspro

…eTextStylesXNumeric/Models/Adapter.swift …TextStylesXNumeric/Helpers/Adapter.swiftSources/DiffableTextStylesXNumeric/Models/Adapter.swift renamed to Sources/DiffableTextStylesXNumeric/Helpers/Adapter.swift Sources/DiffableTextStylesXNumeric/Models/Adapter.swift renamed to Sources/DiffableTextStylesXNumeric/Helpers/Adapter.swift

@@ -20,10 +20,7 @@ public final class Lexicon {
     // MARK: Constants
     //=------------------------------------------------------------------------=
 
-    @usableFromInline static let en_US = Lexicon(
-        locale: Locale(identifier: "en_US"),
-        signs: .ascii(), digits: .ascii(), separators: .ascii()
-    )
+    @usableFromInline static let en_US: Lexicon = .ascii()
 
     //=------------------------------------------------------------------------=
     // MARK: State
@@ -38,7 +35,8 @@ public final class Lexicon {
     // MARK: Initializers
     //=------------------------------------------------------------------------=
 
-    @inlinable init(locale: Locale, signs: Links<Sign>, digits: Links<Digit>, separators: Links<Separator>) {
+    @inlinable init(locale: Locale, signs: Links<Sign>,
+    digits: Links<Digit>, separators: Links<Separator>) {
         self.locale = locale; self.signs = signs
         self.digits = digits; self.separators = separators
     }
@@ -54,6 +52,17 @@ extension Lexicon {
     // MARK: Initializers
     //=------------------------------------------------------------------------=
 
+    @inlinable static func ascii() -> Lexicon {
+        let formatter = NumberFormatter()
+        formatter.numberStyle = .decimal
+        formatter.locale = Locale(identifier: "en_US")
+        //=--------------------------------------=
+        // MARK: Instantiate
+        //=--------------------------------------=
+        return .init(locale: formatter.locale,
+        signs: .ascii(), digits: .ascii(), separators: .ascii())
+    }
+    
     @inlinable static func standard(_ locale: Locale) -> Lexicon {
         let formatter = NumberFormatter()
         formatter.numberStyle = .decimal

Sources/DiffableTextStylesXNumeric/Helpers/Lexicon.swift

@@ -0,0 +1,43 @@
+//=----------------------------------------------------------------------------=
+// 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.
+//=----------------------------------------------------------------------------=
+
+import Foundation
+
+//*============================================================================*
+// MARK: * Source
+//*============================================================================*
+
+@usableFromInline final class Source {
+    
+    //=------------------------------------------------------------------------=
+    // MARK: State
+    //=------------------------------------------------------------------------=
+    
+    @usableFromInline let wrapped: NumberFormatter
+    
+    //=------------------------------------------------------------------------=
+    // MARK: Initializers
+    //=------------------------------------------------------------------------=
+    
+    @inlinable init(_ wrapped: NumberFormatter) { self.wrapped = wrapped }
+    
+    //=------------------------------------------------------------------------=
+    // MARK: Accessors
+    //=------------------------------------------------------------------------=
+    
+    @inlinable var integerLimits: ClosedRange<Int> {
+        wrapped.minimumIntegerDigits ...
+        wrapped.maximumIntegerDigits
+    }
+    
+    @inlinable var fractionLimits: ClosedRange<Int> {
+        wrapped.minimumFractionDigits ...
+        wrapped.maximumFractionDigits
+    }
+}

Sources/DiffableTextStylesXNumeric/Helpers/Source.swift

@@ -69,7 +69,7 @@ extension Precision {
         self = .unchecked()
     }
 
-    @inlinable init<R>(integer:  R) where R: RangeExpression, R.Bound == Int {
+    @inlinable init<R>(integer: R)  where R: RangeExpression, R.Bound == Int {
         self = .unchecked(integer:  Self.interpret(integer,  as: \.integer ))
     }
 

Sources/DiffableTextStylesXNumeric/Models/Precision.swift

@@ -32,6 +32,7 @@ public struct _NumericTextStyle<Format: NumericTextFormat>: DiffableTextStyle {
     // MARK: Initializers
     //=------------------------------------------------------------------------=
 
+    #warning("...")
     @inlinable init(_ format: Format) {
         self.adapter = Adapter(format)
         self.bounds = Bounds()