Bug 138221 – Web Inspector: ObjC Protocol Interfaces should throw exceptions for nil arguments

• Component: Web Inspector
• Status: RESOLVED FIXED

[Joseph Pecoraro]

* SUMMARY
Improved type checking and enforcement of correct inspector protocol types by throwing exceptions if required ObjC protocol objects are nil.

[Radar WebKit Bug Importer]

<rdar://problem/18827853>

[Joseph Pecoraro]

Created attachment 240769 [details]
[PATCH] Proposed Fix

The following convenience macros are defined in RWIProtocolJSONInternal.h, which these files include.

> #define THROW_EXCEPTION_FOR_NIL_KEY(expr) \
>     if (!expr)                            \
>         [NSException raise:NSInvalidArgumentException format:@"cannot set property with nil key"];
> 
> #define THROW_EXCEPTION_FOR_NIL_VALUE(expr) \
>     if (!expr)                              \
>         [NSException raise:NSInvalidArgumentException format:@"cannot set property to nil value"];
> 
> #define THROW_EXCEPTION_FOR_REQUIRED_PROPERTY(expr, propertyName) \
>     if (!expr)                                                    \
>         [NSException raise:NSInvalidArgumentException format:@"required property '%@' cannot be nil", propertyName];
> 
> #define THROW_EXCEPTION_FOR_REQUIRED_PARAMETER(expr, parameterName) \
>     if (!expr)                                                      \
>         [NSException raise:NSInvalidArgumentException format:@"required parameter '%@' cannot be nil", parameterName];
> 
> #define THROW_EXCEPTION_FOR_BAD_OPTIONAL_PARAMETER(expr, parameterName) \
>     if (expr && !*expr)                                                 \
>         [NSException raise:NSInvalidArgumentException format:@"optional parameter '%@' cannot be nil", parameterName];

The top ones are only used by RWIProtocolJSON for generic methods like -setString:forKey, -setObject:forKey:, ...

[WebKit Commit Bot]

This patch modifies the inspector protocol generator. Please ensure that you have rebaselined any generator test results (i.e., by running `Tools/Scripts/run-inspector-generator-tests --reset-results`)

[Joseph Pecoraro]

https://trac.webkit.org/r175479