keyword:["while","export","sizeof","typedef","const","struct","for","union","volatile","static","mutable","if","do","return","goto","enum","else","break","extern","asm","case","default","register","explicit","typename","switch","continue","inline","readonly","assign","readwrite","self","@synchronized","id","typeof","nonatomic","IBOutlet","IBAction","strong","weak","copy","in","out","inout","bycopy","byref","oneway","__strong","__weak","__block","__autoreleasing","@private","@protected","@public","@try","@property","@end","@throw","@catch","@finally","@autoreleasepool","@synthesize","@dynamic","@selector","@optional","@required","@encode","@package","@import","@defs","@compatibility_alias","__bridge","__bridge_transfer","__bridge_retained","__bridge_retain","__covariant","__contravariant","__kindof","_Nonnull","_Nullable","_Null_unspecified","__FUNCTION__","__PRETTY_FUNCTION__","__attribute__","getter","setter","retain","unsafe_unretained","nonnull","nullable","null_unspecified","null_resettable","class","instancetype","NS_DESIGNATED_INITIALIZER","NS_UNAVAILABLE","NS_REQUIRES_SUPER","NS_RETURNS_INNER_POINTER","NS_INLINE","NS_AVAILABLE","NS_DEPRECATED","NS_ENUM","NS_OPTIONS","NS_SWIFT_UNAVAILABLE","NS_ASSUME_NONNULL_BEGIN","NS_ASSUME_NONNULL_END","NS_REFINED_FOR_SWIFT","NS_SWIFT_NAME","NS_SWIFT_NOTHROW","NS_DURING","NS_HANDLER","NS_ENDHANDLER","NS_VALUERETURN","NS_VOIDRETURN"],