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