Does Swift currently support macros, or are there future plans to add support? Currently I'm scattering:
Log.trace(nil, function: __FUNCTION__, file: __FILE__, line: __LINE__)
In various places throughout my code.
Answer
In this case you should add a default value for the "macro" parameters.
Swift 2.2 and higher
func log(message: String,
function: String = #function,
file: String = #file,
line: Int = #line) {
print("Message \"\(message)\" (File: \(file), Function: \(function), Line: \(line))")
}
log("Some message")
Swift 2.1 and lower
func log(message: String,
function: String = __FUNCTION__,
file: String = __FILE__,
line: Int = __LINE__) {
print("Message \"\(message)\" (File: \(file.lastPathComponent), Function: \(function), Line: \(line))")
}
log("Some message")
This is what fatalError and assert functions do.
There are no other macros except the conditional compilation already mentioned in another answer.