Add generate classes

develop-docs/README.md

@@ -6,6 +6,10 @@ This page contains internal documentation for development.
 
 ![Auto UI Performance Class Overview](./auto-ui-performance-tracking.svg)
 
+## Generating classes
+
+You can use the `generate-classes.sh` to generate ViewControllers and other classes to emulate a large project. This is useful, for example, to test the performance of swizzling in a large project without having to check in thousands of lines of code.
+
 ## Generating Diagrams
 
 The diagrams are created with [PlantUml](http://plantuml.com). The advantage of PlantUml

scripts/generate-classes.sh

@@ -0,0 +1,84 @@
+#!/bin/bash
+set -euo pipefail
+
+# Generates classes useful for testing of the performance of swizzling ViewControllers
+# with plenty of code and view controllers.
+# You can move the generated classes to a sample project and use the profiler to analyze
+# how long the swizzling takes.
+
+viewControllers="ViewControllers.swift"
+dsnStorage="DSNStorage.swift"
+
+if [ -f "$viewControllers" ] ; then
+    rm "$viewControllers"
+fi
+
+if [ -f "$dsnStorage" ] ; then
+    rm "$dsnStorage"
+fi
+
+for i in {1..1000}
+do
+   echo "class ViewController$i: UIViewController {
+       override func viewDidLoad() {
+        super.viewDidLoad()
+       } 
+
+       func$i() -> Bool {
+           return true
+       }
+    }" >> $viewControllers
+done
+
+for i in {1..2000}
+do
+   echo "class DSNStorage$i {
+    
+    static let shared = DSNStorage$i()
+    
+    private let dsnFile: URL
+    
+    private init() {
+        // swiftlint:disable force_unwrapping
+        let cachesDirectory = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask).first!
+        // swiftlint:enable force_unwrapping
+        dsnFile = cachesDirectory.appendingPathComponent(\"dsn\")
+    }
+    
+    func saveDSN$i(dsn: String) {
+        do {
+            deleteDSN$i()
+            try dsn.write(to: dsnFile, atomically: true, encoding: .utf8)
+        } catch {
+            SentrySDK.capture(error: error)
+        }
+    }
+    
+    func getDSN$i() -> String? {
+        let fileManager = FileManager.default
+        do {
+            if fileManager.fileExists(atPath: dsnFile.path) {
+                return try String(contentsOfFile: dsnFile.path)
+            }
+        } catch {
+            SentrySDK.capture(error: error)
+        }
+        
+        return nil
+    }
+    
+    func deleteDSN$i() {
+        let fileManager = FileManager.default
+        do {
+            
+            if fileManager.fileExists(atPath: dsnFile.path) {
+                try fileManager.removeItem(at: dsnFile)
+            }
+        } catch {
+            SentrySDK.capture(error: error)
+        }
+    }
+    }" >> $dsnStorage
+done
+
+