create a method that outputs code described by the input in swift

In Swift, we can dynamically generate code using reflection APIs provided by the language. Here's an example method that takes an input string that describes the code to generate, and outputs the corresponding Swift code:


main.swift
func generateCode(from input: String) {
    let components = input.trimmingCharacters(in: .whitespacesAndNewlines).components(separatedBy: " ")
    let methodName = components.first ?? "unknownMethodName"
    let argNames = Array(components.dropFirst())
    
    // Create the method signature
    var signature = "\(methodName)("
    signature += argNames.map { "\($0): Any" }.joined(separator: ", ")
    signature += ") {"
    
    // Output the method signature
    print(signature)
    
    // Output the method body
    for argName in argNames {
        print("print(\"\(argName): \\(\(argName))\")")
    }
    
    // Close the method
    print("}")
}
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This method takes an input string, splits it into method name and argument names, and then generates the corresponding Swift code. The generated code defines a method with the given name and arguments that simply prints each argument value.

Here's an example usage:


main.swift
generateCode(from: "printArgs arg1 arg2 arg3")
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Output:


main.swift
printArgs(arg1: Any, arg2: Any, arg3: Any) {
print("arg1: \(arg1)")
print("arg2: \(arg2)")
print("arg3: \(arg3)")
}
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This method is just a simple example, but it shows how we can dynamically generate code in Swift using reflection APIs.

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