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https://github.com/pointfreeco/swift-composable-architecture.git
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39 lines
1.4 KiB
Swift
39 lines
1.4 KiB
Swift
#if DEBUG
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import os
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import XCTestDynamicOverlay
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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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private let rw = (
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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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log: OSLog(subsystem: "com.apple.runtime-issues", category: "ComposableArchitecture")
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)
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func runtimeWarning(
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_ message: StaticString,
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_ args: CVarArg...
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) {
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unsafeBitCast(
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os_log as (OSLogType, UnsafeRawPointer, OSLog, StaticString, CVarArg...) -> Void,
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to: ((OSLogType, UnsafeRawPointer, OSLog, StaticString, [CVarArg]) -> Void).self
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)(.fault, rw.dso, rw.log, message, args)
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XCTFail(String(format: "\(message)", arguments: args))
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}
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#endif
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