swiftui-navigation/Sources/_SwiftUINavigationState/Internal/RuntimeWarnings.swift

72 lines
2.0 KiB
Swift

@_spi(RuntimeWarn)
@_transparent
@inline(__always)
public func runtimeWarn(
_ message: @autoclosure () -> String,
category: String? = "SwiftUINavigation",
file: StaticString? = nil,
line: UInt? = nil
) {
#if DEBUG
let message = message()
let category = category ?? "Runtime Warning"
if _XCTIsTesting {
if let file = file, let line = line {
XCTFail(message, file: file, line: line)
} else {
XCTFail(message)
}
} else {
#if canImport(os)
os_log(
.fault,
dso: dso,
log: OSLog(subsystem: "com.apple.runtime-issues", category: category),
"%@",
message
)
#else
fputs("\(formatter.string(from: Date())) [\(category)] \(message)\n", stderr)
#endif
}
#endif
}
#if DEBUG
import XCTestDynamicOverlay
#if canImport(os)
import os
// NB: Xcode runtime warnings offer a much better experience than traditional assertions and
// breakpoints, but Apple provides no means of creating custom runtime warnings ourselves.
// To work around this, we hook into SwiftUI's runtime issue delivery mechanism, instead.
//
// Feedback filed: https://gist.github.com/stephencelis/a8d06383ed6ccde3e5ef5d1b3ad52bbc
@usableFromInline
let dso = { () -> UnsafeMutableRawPointer in
let count = _dyld_image_count()
for i in 0..<count {
if let name = _dyld_get_image_name(i) {
let swiftString = String(cString: name)
if swiftString.hasSuffix("/SwiftUI") {
if let header = _dyld_get_image_header(i) {
return UnsafeMutableRawPointer(mutating: UnsafeRawPointer(header))
}
}
}
}
return UnsafeMutableRawPointer(mutating: #dsohandle)
}()
#else
import Foundation
@usableFromInline
let formatter: DateFormatter = {
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd HH:MM:SS.sssZ"
return formatter
}()
#endif
#endif