johnno1962/InjectionIII
InjectionIII
InjectionIII is a suite of development utilities designed for runtime code reloading, expression evaluation, and automated code injection. It provides a system for recompiling modified source files and patching function pointers in a live process to update application behavior without requiring a full restart.
The project utilizes Xcode build script extensions and a live code injector to deliver Swift and Objective-C changes to desktop applications and physical hardware. It features a runtime evaluator that executes string-based Swift expressions to inspect state and retrieve values from a running application.
Its capabilities cover hot reloading for SwiftUI views, storyboard scenes, and reducer logic, alongside tools for unit test iteration. The suite also includes diagnostic utilities for real-time application debugging and method call tracing, as well as remote device control for display mirroring and touch input simulation.
Features
- Hot Code Reloading - Recompiles modified source files and injects new implementations into a running process without requiring a full rebuild or restart.
- Live Code Injectors - Ships a live code injector that delivers Swift and Objective-C changes to running applications and physical devices without restarting.
- Runtime Expression Evaluation - Provides a mechanism to evaluate arbitrary Swift expressions at runtime to inspect and retrieve live application state.
- Desktop Hot Reloaders - Loads dynamic code changes into macOS desktop applications by bypassing sandbox and library validation restrictions.
- Build Script Extensions - Implements Xcode build script extensions that automate the streaming of dynamic code updates from desktop to target devices.
- iOS Binary Patching Tools - Provides a utility for bypassing sandbox restrictions and swizzling method implementations on physical iOS hardware.
- Library Injection - Implements library injection to load compiled code into running processes by bypassing system sandbox and library validation.
- Function Pointer Patching - Redirects application calls to new implementations by updating class tables and function pointers in memory.
- Method Swizzling - Swaps Objective-C method implementations at runtime to change application behavior without restarting the process.
- Swift Class Method Patching - Updates function pointers in class tables to redirect calls to newly injected implementations.
- Runtime Swift Evaluation - Executes specific Swift expressions as strings at runtime to retrieve typed results from a running application.
- Source File Watching - Monitors source files for modifications to trigger automatic recompilation and immediate injection into the target process.
- Physical Device Deployments - Injects code into physical devices and desktop applications by modifying build scripts and disabling runtime sandboxing.
- Static State Preservation - Maintains variable values across reloads by redirecting mutable accessors for static variables to the original bundle.
- Mach-O Symbol Rebinding - Updates value types and top-level functions using Mach-O symbol rebinding and dynamic linker redirection.
- Call Tracing - Logs every method call and argument across bundles and system libraries to trace execution flow.
- Symbol Interposing - Overrides global symbols and top-level functions using the dynamic linker to redirect execution to injected code.
- Redraw Triggers - Triggers SwiftUI view refreshes by observing state changes and resetting visual elements upon code injection.
- Runtime Execution Tracing - Provides real-time debugging by logging function calls and parameters during code injection to trace execution.
- Layout Reloaders - Refreshes storyboard scene layouts and triggers lifecycle events immediately after builds to preview interface changes.
- Hot-Reload State Preservation - Redirects mutable accessors for static variables so that injected code preserves existing values from the main bundle.
- Xcode and iOS Development Tools - Swift-based rewrite of the Xcode injection tool.
Star history
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