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@@ -1,236 +0,0 @@
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-//
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-// Dynamic
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-// Created by Mhd Hejazi on 4/15/20.
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-// Modify by XCBOSA on 6/3/23
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-// Copyright © 2020 Samabox. All rights reserved.
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-//
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-
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-import Foundation
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-
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-class Invocation {
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- public static var loggingEnabled: Bool = false
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-
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- private let target: NSObject
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- private let selector: Selector
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-
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- var invocation: NSObject?
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-
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- var typeEncoding: String?
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- var numberOfArguments: Int = 0
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- var returnLength: Int = 0
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- var returnType: UnsafePointer<CChar>?
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- var returnTypeString: String? {
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- guard let returnType = returnType else { return nil }
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- return String(cString: returnType)
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- }
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- var returnsObject: Bool {
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- /// `@` is the type encoding for an object
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- returnTypeString == "@"
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- }
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- var returnsAny: Bool {
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- /// `v` is the type encoding for Void
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- returnTypeString != "v"
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- }
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- lazy var returnedObject: AnyObject? = {
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- returnedObjectValue()
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- }()
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- private(set) var isInvoked: Bool = false
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-
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- init(target: NSObject, selector: Selector) throws {
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- self.target = target
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- self.selector = selector
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- try initialize()
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- }
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-
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- private func initialize() throws {
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- /// `NSMethodSignature *methodSignature = [target methodSignatureForSelector: selector]`
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- let methodSignature: NSObject
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- do {
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- let selector = NSSelectorFromString("methodSignatureForSelector:")
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- let signature = (@convention(c)(NSObject, Selector, Selector) -> Any).self
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- let method = unsafeBitCast(target.method(for: selector), to: signature)
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- guard let result = method(target, selector, self.selector) as? NSObject else {
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- let error = InvocationError.unrecognizedSelector(type(of: target), self.selector)
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- throw error
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- }
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- methodSignature = result
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- }
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-
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- /// `numberOfArguments = methodSignature.numberOfArguments`
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- self.numberOfArguments = methodSignature.value(forKeyPath: "numberOfArguments") as? Int ?? 0
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-
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- /// `methodReturnLength = methodSignature.methodReturnLength`
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- self.returnLength = methodSignature.value(forKeyPath: "methodReturnLength") as? Int ?? 0
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-
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- /// `methodReturnType = methodSignature.methodReturnType`
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- let methodReturnType: UnsafePointer<CChar>
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- do {
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- let selector = NSSelectorFromString("methodReturnType")
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- let signature = (@convention(c)(NSObject, Selector) -> UnsafePointer<CChar>).self
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- let method = unsafeBitCast(methodSignature.method(for: selector), to: signature)
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- methodReturnType = method(methodSignature, selector)
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- }
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- self.returnType = methodReturnType
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-
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- /// `NSInvocation *invocation = [NSInvocation invocationWithMethodSignature: methodSignature]`
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- let invocation: NSObject
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- do {
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- let NSInvocation = NSClassFromString("NSInvocation") as AnyObject
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- let selector = NSSelectorFromString("invocationWithMethodSignature:")
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- let signature = (@convention(c)(AnyObject, Selector, AnyObject) -> AnyObject).self
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- let method = unsafeBitCast(NSInvocation.method(for: selector), to: signature)
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- guard let result = method(NSInvocation, selector, methodSignature) as? NSObject else {
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- let error = InvocationError.unrecognizedSelector(type(of: target), self.selector)
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- throw error
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- }
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- invocation = result
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- }
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- self.invocation = invocation
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-
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- /// `invocation.selector = selector`
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- do {
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- let selector = NSSelectorFromString("setSelector:")
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- let signature = (@convention(c)(NSObject, Selector, Selector) -> Void).self
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- let method = unsafeBitCast(invocation.method(for: selector), to: signature)
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- method(invocation, selector, self.selector)
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- }
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-
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- /// `[invocation retainArguments]`
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- do {
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- let selector = NSSelectorFromString("retainArguments")
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- let signature = (@convention(c)(NSObject, Selector) -> Void).self
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- let method = unsafeBitCast(invocation.method(for: selector), to: signature)
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- method(invocation, selector)
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- }
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- }
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-
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- private func getArgumentType(at index: NSInteger) -> String? {
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- guard let invocation = invocation else { return nil }
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-
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- let methodSignatureSelector = NSSelectorFromString("methodSignature")
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- let methodSignatureSignature = (@convention(c)(NSObject, Selector) -> NSObject).self
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- let methodSignatureMethod = unsafeBitCast(invocation.method(for: methodSignatureSelector), to: methodSignatureSignature)
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-
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- let methodSignature = methodSignatureMethod(invocation, methodSignatureSelector)
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-
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- let selector = NSSelectorFromString("getArgumentTypeAtIndex:")
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- let signature = (@convention(c)(NSObject, Selector, NSInteger) -> UnsafePointer<CChar>).self
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- let method = unsafeBitCast(methodSignature.method(for: selector), to: signature)
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-
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- let rawType = method(methodSignature, selector, index)
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- return NSString(cString: rawType, encoding: NSUTF8StringEncoding) as? String
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- }
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-
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- func setArgument(_ argument: Any?, at index: NSInteger) {
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- guard let invocation = invocation else { return }
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-
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- let argument = TypeMapping.convertToObjCType(argument) ?? argument
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- guard let realArgumentType = self.getArgumentType(at: index) else { return }
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-
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- /// `[invocation setArgument:&argument atIndex:i + 2]`
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- let selector = NSSelectorFromString("setArgument:atIndex:")
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- let signature = (@convention(c)(NSObject, Selector, UnsafeRawPointer, Int) -> Void).self
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- let method = unsafeBitCast(invocation.method(for: selector), to: signature)
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-
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-// if let valueArgument = argument as? NSNumber {
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-// /// Get the type byte size
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-//// valueArgument = NSNumber(floatLiteral: argument as! Double)
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-// let typeSize = UnsafeMutablePointer<Int>.allocate(capacity: 1)
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-// defer { typeSize.deallocate() }
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-// NSGetSizeAndAlignment(valueArgument.objCType, typeSize, nil)
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-//
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-// /// Get the actual value
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-// let buffer = UnsafeMutablePointer<Int8>.allocate(capacity: typeSize.pointee)
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-// defer { buffer.deallocate() }
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-// valueArgument.getValue(buffer)
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-//
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-// method(invocation, selector, buffer, index)
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-// } else {
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- withUnsafePointer(to: argument) { pointer in
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- method(invocation, selector, pointer, index)
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-// }
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- }
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- }
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-
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- func invoke() {
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- guard let invocation = invocation, !isInvoked else { return }
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-
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- isInvoked = true
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-
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- /// `[invocation invokeWithTarget: target]`
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- do {
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- let selector = NSSelectorFromString("invokeWithTarget:")
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- let signature = (@convention(c)(NSObject, Selector, AnyObject) -> Void).self
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- let method = unsafeBitCast(invocation.method(for: selector), to: signature)
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- method(invocation, selector, target)
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- }
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- }
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-
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- func getReturnValue<T>(result: inout T) {
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- guard let invocation = invocation else { return }
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-
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- /// `[invocation getReturnValue: returnValue]`
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- do {
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- let selector = NSSelectorFromString("getReturnValue:")
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- let signature = (@convention(c)(NSObject, Selector, UnsafeMutableRawPointer) -> Void).self
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- let method = unsafeBitCast(invocation.method(for: selector), to: signature)
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- withUnsafeMutablePointer(to: &result) { pointer in
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- method(invocation, selector, pointer)
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- }
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- }
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- }
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-
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- private func returnedObjectValue() -> AnyObject? {
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- guard returnsObject, returnLength > 0 else {
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- return nil
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- }
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-
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- var result: AnyObject?
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-
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- getReturnValue(result: &result)
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-
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- guard let object = result else {
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- return nil
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- }
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-
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- /// Take the ownership of the initialized objects to ensure they're deallocated properly.
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- if isRetainingMethod() {
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- return Unmanaged.passRetained(object).takeRetainedValue()
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- }
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-
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- /// `NSInvocation.getReturnValue()` doesn't give us the ownership of the returned object, but the compiler
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- /// tries to release this object anyway. So, we are retaining it to balance with the compiler's release.
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- return Unmanaged.passRetained(object).takeUnretainedValue()
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- }
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-
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- private func isRetainingMethod() -> Bool {
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- /// Refer to: https://bit.ly/308okXm
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- let selector = NSStringFromSelector(self.selector)
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- return selector == "alloc" ||
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- selector.hasPrefix("new") ||
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- selector.hasPrefix("copy") ||
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- selector.hasPrefix("mutableCopy")
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- }
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-}
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-
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-internal enum InvocationError: CustomNSError {
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- case unrecognizedSelector(_ classType: AnyClass, _ selector: Selector)
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-
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- internal static var errorDomain: String { String(describing: Invocation.self) }
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-
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- internal var errorCode: Int {
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- switch self {
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- case .unrecognizedSelector:
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- return 404
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- }
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- }
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-
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- internal var errorUserInfo: [String: Any] {
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- var message: String
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- switch self {
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- case .unrecognizedSelector(let classType, let selector):
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- message = "'\(String(describing: classType))' doesn't recognize selector '\(selector)'"
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- }
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- return [NSLocalizedDescriptionKey: message]
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- }
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-}
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