Define blocks as objects

[L1ghtmann]

What does this implement/fix? Explain your changes.

• Adds a check for (^) and returns the type as %@ as proposed by Kirb in https://github.com/theos/logos/issues/12#issuecomment-284217410

Does this close any currently open issues?

• I believe it would close #12, though 1) the error log linked in the issue no longer exists and 2) I was unable to repro an error
• This pr simply provides more information in %log's text for block parameters (see below).

Any relevant logs, error output, etc?

For:

%hook IALBackupManager
-(void)makeBackupWithFilter:(BOOL)filter andCompletion:(void (^)(BOOL))block {
    %log;
    %orig;
}
%end

Before:

NSLog(@"-[<IALBackupManager: %p> makeBackupWithFilter:%d andCompletion:0x%llx]", self, filter, (uint64_t)block);

IAmLazy[5455] <Notice>: -[<IALBackupManager: 0x280125fe0> makeBackupWithFilter:1 andCompletion:0x16bc9e3f8]

After:

NSLog(@"-[<IALBackupManager: %p> makeBackupWithFilter:%d andCompletion:%@]", self, filter, block)

IAmLazy[5144] <Notice>: -[<IALBackupManager: 0x282c95ce0> makeBackupWithFilter:1 andCompletion:<__NSMallocBlock__: 0x282c95d10>]

Any other comments?

• Regex based off of Kirb's comment and https://fuckingblocksyntax.com/

Where has this been tested?

Operating System: …

Linux (WSL) iP7 -- iOS 14.3 -- unc0ver

Platform: …

Target Platform: …

Toolchain Version: …

SDK Version: …