3D5F0063-0266-40FE-AA0B-C3AB67CE491D.codesnippet

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>IDECodeSnippetCompletionPrefix</key>
	<string>@weakselfnotnil</string>
	<key>IDECodeSnippetCompletionScopes</key>
	<array>
		<string>CodeExpression</string>
	</array>
	<key>IDECodeSnippetContents</key>
	<string>@weakselfnotnil(^(&lt;#arguments#&gt;)) {
    &lt;#body#&gt;
} @weakselfend</string>
	<key>IDECodeSnippetIdentifier</key>
	<string>3D5F0063-0266-40FE-AA0B-C3AB67CE491D</string>
	<key>IDECodeSnippetLanguage</key>
	<string>Xcode.SourceCodeLanguage.Objective-C</string>
	<key>IDECodeSnippetSummary</key>
	<string>Creates block wrapped to @weakselfnotnil macro</string>
	<key>IDECodeSnippetTitle</key>
	<string>Weakselfnotnil block</string>
	<key>IDECodeSnippetUserSnippet</key>
	<true/>
	<key>IDECodeSnippetVersion</key>
	<integer>2</integer>
</dict>
</plist>

FFE129E4-54E5-46D0-8454-B37CC620BB2E.codesnippet

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>IDECodeSnippetCompletionPrefix</key>
	<string>@weakself</string>
	<key>IDECodeSnippetCompletionScopes</key>
	<array>
		<string>CodeExpression</string>
	</array>
	<key>IDECodeSnippetContents</key>
	<string>@weakself(^(&lt;#arguments#&gt;)) {
    &lt;#body#&gt;
} @weakselfend</string>
	<key>IDECodeSnippetIdentifier</key>
	<string>FFE129E4-54E5-46D0-8454-B37CC620BB2E</string>
	<key>IDECodeSnippetLanguage</key>
	<string>Xcode.SourceCodeLanguage.Objective-C</string>
	<key>IDECodeSnippetSummary</key>
	<string>Creates block wrapped to @weakself macro</string>
	<key>IDECodeSnippetTitle</key>
	<string>Weakself block</string>
	<key>IDECodeSnippetUserSnippet</key>
	<true/>
	<key>IDECodeSnippetVersion</key>
	<integer>2</integer>
</dict>
</plist>

weakself.h

#import <assert.h>
#import <objc/NSObjCRuntime.h>
#import <CoreFoundation/CoreFoundation.h>
#ifndef DEBUG

#define weakself(ARGS) \
"weakself should be called as @weakself" @"" ? \
({  __weak typeof(self) _private_weakSelf = self; \
    ARGS { \
        __strong typeof(_private_weakSelf) self __attribute__((unused)) = _private_weakSelf; \
        return ^ (void) {

#define weakselfnotnil(ARGS) \
"weakself should be called as @weakself" @"" ? \
({  __weak typeof(self) _private_weakSelf = self; \
    ARGS { \
        __strong typeof(_private_weakSelf) self __attribute__((unused)) = _private_weakSelf; \
        return ^ (void) { if (self)

#else // DEBUG

struct RefCountCheckerData {
    CFTypeRef weakSelf;
    NSUInteger refCountBefore;
};

static inline void vbr_CheckRefCountForWeakSelf(struct RefCountCheckerData *data) {
    const NSUInteger refCountAfter = (NSUInteger const) CFGetRetainCount(data->weakSelf);
    const NSUInteger countOfSelfRefInBlock = refCountAfter - data->refCountBefore;
    assert(countOfSelfRefInBlock == 0);
}

#define weakself(ARGS) \
"weakself should be called as @weakself" @"" ? \
({  __weak typeof(self) _private_weakSelf = self; \
    __attribute__((cleanup(vbr_CheckRefCountForWeakSelf), unused)) \
    struct RefCountCheckerData _private_refCountCheckerData = { \
        .weakSelf = (__bridge CFTypeRef)self, \
        .refCountBefore = CFGetRetainCount((__bridge CFTypeRef)self), \
    };\
    ARGS { \
        __strong typeof(_private_weakSelf) self __attribute__((unused)) = _private_weakSelf; \
        return ^ (void) {

#define weakselfnotnil(ARGS) \
"weakself should be called as @weakself" @"" ? \
({  __weak typeof(self) _private_weakSelf = self; \
    __attribute__((cleanup(vbr_CheckRefCountForWeakSelf), unused)) \
    struct RefCountCheckerData _private_refCountCheckerData = { \
        .weakSelf = (__bridge CFTypeRef)self, \
        .refCountBefore = CFGetRetainCount((__bridge CFTypeRef)self), \
    };\
    ARGS { \
        __strong typeof(_private_weakSelf) self __attribute__((unused)) = _private_weakSelf; \
        return ^ (void) { if (self)


#endif // DEBUG

#define weakselfend \
    try {} @finally {} } (); }; \
}) : nil