fix(ios): xcode 11 / ios 13 compatiility

[janvennemann]

Building the Pods project with xcodebuild from Xcode 11 fails if project.xcworkspace/contents.xcworkspacedata is not present. This will generate the file if required to ensure compatibility with Xcode 11.

Closes TIMOB-27362

[vijaysingh-axway]

Looks good

[lokeshchdhry]

@sgtcoolguy , we are waiting for few last fixes from Jan for this & a hyperloop module to test.

[janvennemann]

@sgtcoolguy so this got way bigger than expected. I tried to fix some generics handling at first but our metabase parser has a really unbelievably crappy and fragile design so it turned out that i had to go down the rabbit hole to fix any of this.

We used to have a very basic generic type handling, which was pretty much hardcoded to the commonly used template params ObjectType and KeyType that Apple uses. Now that worked fine until in iOS 13 a few of those were introduced in blocks which completely blew up our block processing (which is based on processing the block signature as a string without any clang context available). Well, long story short, i had to fix a few things to get this mess somewhat stable again:

• Blocks will be properly parsed with libclang now, except for block return values. I couldn't find out how this is done with the C API, so this still used the old style string signature processing.
• All typedefs will be resolved to their underlying type, including template parameters (one exception is instancetype which we need to detect init methods).
• Encoding will be resolved directly in most cases via the appropriate libclang APIs.

When we are going to move Hyperloop to the core we should really consider switching to the C++ API of clang for the metabase parser.

[janvennemann]

@lokeshchdhry Please check the 4.0.4 Beta 1 release.

Also note that the hyperloop-examples project needs some changes because the GLCalendarView seems to be incompatible with Xcode 11 / iOS 13. For testing the changes in this ticket remove GLCalendarView from the Podfile and comment out the content of app/controllers/ios/libraries/calendar.js and app/lib/ios/subclasses/calendardelegate.js

[longton95]

FR Passed

Tested with the hyperloop example app, the application built successfully.

Test Environment

MacOS Mojave version 10.15 beta
Xcode 11 beta 6
Node 10.13.0
iPhone 8 plus sim (13.0), iPhone 6 plus (12.4), iPhone 7 (13.0)
NPM 4.2.14
CLI 7.1.1
SDK 8.2.0.v20190906140307

Waiting on second CR for merge

[vijaysingh-axway]

LGTM!