Add catalog to nib/storyboard image and color parsing

Sources/RswiftCore/Generators/NibStructGenerator.swift

@@ -204,12 +204,17 @@ struct NibStructGenerator: StructGenerator {
 
     // Validation
     let validateImagesLines = nib.usedImageIdentifiers.uniqueAndSorted()
-      .map {
-        "if UIKit.UIImage(named: \"\($0)\", in: R.hostingBundle, compatibleWith: nil) == nil { throw Rswift.ValidationError(description: \"[R.swift] Image named '\($0)' is used in nib '\(nib.name)', but couldn't be loaded.\") }"
+      .map { nameCatalog -> String in
+        if nameCatalog.isSystemCatalog {
+          return "if #available(iOS 13.0, *) { if UIKit.UIImage(systemName: \"\(nameCatalog.name)\") == nil { throw Rswift.ValidationError(description: \"[R.swift] System image named '\(nameCatalog.name)' is used in nib '\(nib.name)', but couldn't be loaded.\") } }"
+        } else {
+          return "if UIKit.UIImage(named: \"\(nameCatalog.name)\", in: R.hostingBundle, compatibleWith: nil) == nil { throw Rswift.ValidationError(description: \"[R.swift] Image named '\(nameCatalog.name)' is used in nib '\(nib.name)', but couldn't be loaded.\") }"
+        }
       }
     let validateColorLines = nib.usedColorResources.uniqueAndSorted()
-      .map {
-        "if UIKit.UIColor(named: \"\($0)\", in: R.hostingBundle, compatibleWith: nil) == nil { throw Rswift.ValidationError(description: \"[R.swift] Color named '\($0)' is used in storyboard '\(nib.name)', but couldn't be loaded.\") }"
+      .compactMap { nameCatalog -> String? in
+        if nameCatalog.isSystemCatalog { return nil }
+        return "if UIKit.UIColor(named: \"\(nameCatalog.name)\", in: R.hostingBundle, compatibleWith: nil) == nil { throw Rswift.ValidationError(description: \"[R.swift] Color named '\(nameCatalog.name)' is used in nib '\(nib.name)', but couldn't be loaded.\") }"
       }
     let validateColorLinesWithAvailableIf = ["if #available(iOS 11.0, tvOS 11.0, *) {"] +
       validateColorLines.map { $0.indent(with: "  ") } +

Sources/RswiftCore/Generators/StoryboardGenerator.swift

@@ -163,12 +163,17 @@ struct StoryboardStructGenerator: StructGenerator {
 
     // Validation
     let validateImagesLines = storyboard.usedImageIdentifiers.uniqueAndSorted()
-      .map {
-        "if UIKit.UIImage(named: \"\($0)\", in: R.hostingBundle, compatibleWith: nil) == nil { throw Rswift.ValidationError(description: \"[R.swift] Image named '\($0)' is used in storyboard '\(storyboard.name)', but couldn't be loaded.\") }"
+      .map { nameCatalog -> String in
+        if nameCatalog.isSystemCatalog {
+          return "if #available(iOS 13.0, *) { if UIKit.UIImage(systemName: \"\(nameCatalog.name)\") == nil { throw Rswift.ValidationError(description: \"[R.swift] System image named '\(nameCatalog.name)' is used in storyboard '\(storyboard.name)', but couldn't be loaded.\") } }"
+        } else {
+          return "if UIKit.UIImage(named: \"\(nameCatalog.name)\", in: R.hostingBundle, compatibleWith: nil) == nil { throw Rswift.ValidationError(description: \"[R.swift] Image named '\(nameCatalog.name)' is used in storyboard '\(storyboard.name)', but couldn't be loaded.\") }"
+        }
       }
     let validateColorLines = storyboard.usedColorResources.uniqueAndSorted()
-      .map {
-        "if UIKit.UIColor(named: \"\($0)\", in: R.hostingBundle, compatibleWith: nil) == nil { throw Rswift.ValidationError(description: \"[R.swift] Color named '\($0)' is used in storyboard '\(storyboard.name)', but couldn't be loaded.\") }"
+      .compactMap { nameCatalog -> String? in
+        if nameCatalog.isSystemCatalog { return nil }
+        return "if UIKit.UIColor(named: \"\(nameCatalog.name)\", in: R.hostingBundle, compatibleWith: nil) == nil { throw Rswift.ValidationError(description: \"[R.swift] Color named '\(nameCatalog.name)' is used in storyboard '\(storyboard.name)', but couldn't be loaded.\") }"
       }
     let validateColorLinesWithAvailableIf = ["if #available(iOS 11.0, tvOS 11.0, *) {"] +
       validateColorLines.map { $0.indent(with: "  ") } +

Sources/RswiftCore/ResourceTypes/NameCatalog.swift

@@ -0,0 +1,23 @@
+//
+//  NameCatalog.swift
+//  RswiftCore
+//
+//  Created by Tom Lokhorst on 2020-05-08.
+//
+
+import Foundation
+
+struct NameCatalog: Hashable, Comparable {
+  let name: String
+  let catalog: String?
+
+  var isSystemCatalog: Bool {
+    return
+         catalog == "System" // for colors
+      || catalog == "system" // for images
+  }
+
+  static func < (lhs: NameCatalog, rhs: NameCatalog) -> Bool {
+    lhs.name < lhs.name
+  }
+}

Sources/RswiftCore/ResourceTypes/Nib.swift

@@ -23,8 +23,8 @@ struct Nib: WhiteListedExtensionsResourceType, ReusableContainer {
   let name: String
   let rootViews: [Type]
   let reusables: [Reusable]
-  let usedImageIdentifiers: [String]
-  let usedColorResources: [String]
+  let usedImageIdentifiers: [NameCatalog]
+  let usedColorResources: [NameCatalog]
   let usedAccessibilityIdentifiers: [String]
 
   init(url: URL) throws {
@@ -58,8 +58,8 @@ internal class NibParserDelegate: NSObject, XMLParserDelegate {
   let ignoredRootViewElements = ["placeholder"]
   var rootViews: [Type] = []
   var reusables: [Reusable] = []
-  var usedImageIdentifiers: [String] = []
-  var usedColorReferences: [String] = []
+  var usedImageIdentifiers: [NameCatalog] = []
+  var usedColorReferences: [NameCatalog] = []
   var usedAccessibilityIdentifiers: [String] = []
 
   // State
@@ -77,12 +77,12 @@ internal class NibParserDelegate: NSObject, XMLParserDelegate {
     switch elementName {
     case "image":
       if let imageIdentifier = attributeDict["name"] {
-        usedImageIdentifiers.append(imageIdentifier)
+        usedImageIdentifiers.append(NameCatalog(name: imageIdentifier, catalog: attributeDict["catalog"]))
       }
 
     case "color":
       if let colorName = attributeDict["name"] {
-        usedColorReferences.append(colorName)
+        usedColorReferences.append(NameCatalog(name: colorName, catalog: attributeDict["catalog"]))
       }
 
     case "accessibility":

Sources/RswiftCore/ResourceTypes/Storyboard.swift

@@ -30,8 +30,8 @@ struct Storyboard: WhiteListedExtensionsResourceType, ReusableContainer {
   let viewControllers: [ViewController]
   let viewControllerPlaceholders: [ViewControllerPlaceholder]
   let usedAccessibilityIdentifiers: [String]
-  let usedImageIdentifiers: [String]
-  let usedColorResources: [String]
+  let usedImageIdentifiers: [NameCatalog]
+  let usedColorResources: [NameCatalog]
   let reusables: [Reusable]
 
   var initialViewController: ViewController? {
@@ -128,8 +128,8 @@ private class StoryboardParserDelegate: NSObject, XMLParserDelegate {
   var initialViewControllerIdentifier: String?
   var viewControllers: [Storyboard.ViewController] = []
   var viewControllerPlaceholders: [Storyboard.ViewControllerPlaceholder] = []
-  var usedImageIdentifiers: [String] = []
-  var usedColorReferences: [String] = []
+  var usedImageIdentifiers: [NameCatalog] = []
+  var usedColorReferences: [NameCatalog] = []
   var usedAccessibilityIdentifiers: [String] = []
   var reusables: [Reusable] = []
 
@@ -167,12 +167,12 @@ private class StoryboardParserDelegate: NSObject, XMLParserDelegate {
 
     case "image":
       if let imageIdentifier = attributeDict["name"] {
-        usedImageIdentifiers.append(imageIdentifier)
+        usedImageIdentifiers.append(NameCatalog(name: imageIdentifier, catalog: attributeDict["catalog"]))
       }
 
     case "color":
       if let colorName = attributeDict["name"] {
-        usedColorReferences.append(colorName)
+        usedColorReferences.append(NameCatalog(name: colorName, catalog: attributeDict["catalog"]))
       }
 
     case "accessibility":