Steve Yegge created THRIFT-3401:
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Summary: Nested collections emit Objective-C code that cannot
compile
Key: THRIFT-3401
URL: https://issues.apache.org/jira/browse/THRIFT-3401
Project: Thrift
Issue Type: Bug
Components: Cocoa - Compiler
Affects Versions: 1.0
Environment: OS X 10.9 and 10.10
Reporter: Steve Yegge
Priority: Critical
Nested Thrift collections produce nested generics in Objective-C.
Unfortunately, Objective-C generics do not appear to support type nesting.
For instance,
1: list<list<string>> foo
generates an Objective-C declaration like this
@property (strong, nonatomic) NSMutableArray<NSArray<NSString *>> * foo;
which results in an XCode compile error: Type argument 'NSArray<NSString *>'
is neither an Objective-C object nor a block type
The only workaround is to edit the generated code to remove the nested type
specifiers.
Until Objective-C supports nesting generic types, the Thrift cocoa compiler
should limit the type nesting to at most one level -- NSMutableArray<NSArray>
is legal, for instance. Alternately, an easier solution might be to add a flag
that disables the generation of generic types for cocoa.
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