Emit unmodified source if allDisabled is true.

Author: samdeane

Sources/SwiftFormat/API/SwiftFormatter.swift

@@ -106,6 +106,12 @@ public final class SwiftFormatter {
     // also does not touch an empty file even if the setting to add trailing newlines is enabled.)
     guard !source.isEmpty else { return }
 
+    // If allDisabled is set, just emit the source as-is.
+    guard !configuration.allDisabled else {
+      outputStream.write(source)
+      return
+    }
+
     let sourceFile = try parseAndEmitDiagnostics(
       source: source,
       operatorTable: .standardOperators,

Sources/swift-format/Frontend/Frontend.swift

@@ -182,11 +182,6 @@ class Frontend {
       return nil
     }
 
-    guard !configuration.allDisabled else {
-      // Formatting is suppressed for this file.
-      return nil
-    }
-
     return FileToProcess(
       fileHandle: sourceFile,
       url: url,