Update how FoundationXML is imported

Author: d-ronnqvist

Sources/DocCHTML/MarkupRenderer+Availability.swift

@@ -8,10 +8,11 @@
  See https://swift.org/CONTRIBUTORS.txt for Swift project authors
 */
 
-package import Foundation
 #if canImport(FoundationXML)
 // FIXME: See if we can avoid depending on XMLNode/XMLParser to avoid needing to import FoundationXML
 package import FoundationXML
+#else
+package import Foundation
 #endif
 
 package extension MarkdownRenderer {

Sources/DocCHTML/MarkupRenderer+Breadcrumbs.swift

@@ -8,10 +8,11 @@
  See https://swift.org/CONTRIBUTORS.txt for Swift project authors
 */
 
-package import Foundation
 #if canImport(FoundationXML)
 // FIXME: See if we can avoid depending on XMLNode/XMLParser to avoid needing to import FoundationXML
 package import FoundationXML
+#else
+package import Foundation
 #endif
 
 package extension MarkdownRenderer {

Sources/DocCHTML/MarkupRenderer+Declaration.swift

@@ -8,10 +8,11 @@
  See https://swift.org/CONTRIBUTORS.txt for Swift project authors
 */
 
-package import Foundation
 #if canImport(FoundationXML)
 // FIXME: See if we can avoid depending on XMLNode/XMLParser to avoid needing to import FoundationXML
 package import FoundationXML
+#else
+package import Foundation
 #endif
 
 package import DocCCommon

Sources/DocCHTML/MarkupRenderer+Parameters.swift

@@ -8,10 +8,11 @@
  See https://swift.org/CONTRIBUTORS.txt for Swift project authors
 */
 
-package import Foundation
 #if canImport(FoundationXML)
 // FIXME: See if we can avoid depending on XMLNode/XMLParser to avoid needing to import FoundationXML
 package import FoundationXML
+#else
+package import Foundation
 #endif
 
 package import Markdown

Sources/DocCHTML/MarkupRenderer+Returns.swift

@@ -8,10 +8,11 @@
  See https://swift.org/CONTRIBUTORS.txt for Swift project authors
 */
 
-package import Foundation
 #if canImport(FoundationXML)
 // FIXME: See if we can avoid depending on XMLNode/XMLParser to avoid needing to import FoundationXML
 package import FoundationXML
+#else
+package import Foundation
 #endif
 
 package import Markdown

Sources/DocCHTML/MarkupRenderer+Topics.swift

@@ -8,10 +8,11 @@
  See https://swift.org/CONTRIBUTORS.txt for Swift project authors
 */
 
-package import Foundation
 #if canImport(FoundationXML)
 // FIXME: See if we can avoid depending on XMLNode/XMLParser to avoid needing to import FoundationXML
 package import FoundationXML
+#else
+package import Foundation
 #endif
 
 package import Markdown

Sources/DocCHTML/WordBreak.swift

@@ -8,10 +8,11 @@
  See https://swift.org/CONTRIBUTORS.txt for Swift project authors
 */
 
-package import Foundation
 #if canImport(FoundationXML)
 // FIXME: See if we can avoid depending on XMLNode/XMLParser to avoid needing to import FoundationXML
 package import FoundationXML
+#else
+package import Foundation
 #endif
 
 package import DocCCommon

Sources/DocCHTML/XMLNode+element.swift

@@ -8,10 +8,11 @@
  See https://swift.org/CONTRIBUTORS.txt for Swift project authors
 */
 
-package import Foundation
 #if canImport(FoundationXML)
 // FIXME: See if we can avoid depending on XMLNode/XMLParser to avoid needing to import FoundationXML
 package import FoundationXML
+#else
+package import Foundation
 #endif
 
 extension XMLNode {

Sources/SwiftDocC/Model/Rendering/HTML/HTMLContentConsumer.swift

@@ -8,10 +8,11 @@
  See https://swift.org/CONTRIBUTORS.txt for Swift project authors
 */
 
-package import Foundation
 #if canImport(FoundationXML)
 // FIXME: See if we can avoid depending on XMLNode/XMLParser to avoid needing to import FoundationXML
 package import FoundationXML
+#else
+package import Foundation
 #endif
 
 /// A consumer for HTML content produced during documentation conversion.

Sources/SwiftDocC/Model/Rendering/HTML/HTMLRenderer.swift

@@ -8,10 +8,12 @@
  See https://swift.org/CONTRIBUTORS.txt for Swift project authors
 */
 
-import Foundation
 #if canImport(FoundationXML)
 // FIXME: See if we can avoid depending on XMLNode/XMLParser to avoid needing to import FoundationXML
 import FoundationXML
+import FoundationEssentials
+#else
+import Foundation
 #endif
 import DocCHTML
 import Markdown