* Rationalize input validation exceptions and assertions
... under a single ThrowHandler concept. This makes it possible to set
an alternative ThrowHandler in our C# bindings that properly translates
input validation exceptions to the correct .NET exception types.
* Rename api/input_validation.h to util/exception.h
* Reimplement util/hard_assert.h in terms of util/exception.h
* Make disabling GC prevent even scheduling it
Make the linkage of kFIRFirestoreCacheSizeUnlimited explicitly
extern "C". This previously had no fixed linkage in the header and must
have accidentally worked because the implementation had C++ linkage.
Move internal CacheSizeUnlimited to api::Settings and the
definition of kFIRFirestoreCacheSizeUnlimited into the Objective-C
language binding.
Migrate settings defaults to C++ settings
Ensure that all defaults are compiler initialized to ensure there are no
initialization order problems.
* Creates a C++ api::Settings class as a container for the settings we pass
into the core client.
* Adds [FIRFirestoreSettings internalSettings] to convert from public API
settings to api::Settings.
Input validation, etc. still happens in FIRFirestoreSettings.
* add a new property `timestampsInSnapshotsEnabled` to `FirestoreSettings`, `false` by default;
* add a verbose warning message urging users to opt into the new behavior;
* set `timestampsInSnapshotsEnabled` to true in the integration tests to reduce the verbose console
spam during the test run and make sure the flag won't break anything once it's flipped.
* Move all Firestore files to Objective-C++
* Update project file references
* Don't use module imports from Objective-C++
* Use extern "C" for C-accessible globals
* Work around more stringent type checking in Objective-C++
* NSMutableDictionary ivars aren't implicitly casted to NSDictionary
* FSTMaybeDocument callback can't be passed a function that accepts
FSTDocument
* NSComparisonResult can't be multiplied by -1 without casting
* Add a #include <inttypes.h> where needed
* Avoid using C++ keywords as variables
* Remove #if __cplusplus guards
Gil