Bug 155491 – [ES6] Arrow function syntax. Update syntax error text 'super is only valid inside functions' to more suitable

• Component: JavaScriptCore
• Status: RESOLVED FIXED

[GSkachkov]

After landing  https://bugs.webkit.org/show_bug.cgi?id=153864 the patch we need to fix Syntax error message. 
It is recommended by Saam Barati to use new message "super is only valid inside functions or 'eval' inside a function".

[GSkachkov]

The same for new.target "new.target is only valid inside functions" -> "new.target is only valid inside functions or 'eval' inside a function"

[GSkachkov]

Created attachment 274515 [details]
Patch

[Saam Barati]

Comment on attachment 274515 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=274515&action=review

> Source/JavaScriptCore/parser/Parser.cpp:3847
> +        semanticFailIfFalse(currentScope()->isFunction() || (scopeRef->isEvalContext() && scopeRef->expectedSuperBinding() == SuperBinding::Needed), "super is only valid inside functions or 'eval' inside a function");

I vote for this message:
"'super' is only valid inside a function or an 'eval' inside a function"

Do you know what we do when we have 'super' inside a function not in a class?
It looks like we accept that syntax. Do we throw a runtime error? Should that also
be a syntax error?

> Source/JavaScriptCore/tests/stress/generator-with-super.js:12
> +    //debug(error);

Remove

[GSkachkov]

Comment on attachment 274515 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=274515&action=review

>> Source/JavaScriptCore/parser/Parser.cpp:3847
>> +        semanticFailIfFalse(currentScope()->isFunction() || (scopeRef->isEvalContext() && scopeRef->expectedSuperBinding() == SuperBinding::Needed), "super is only valid inside functions or 'eval' inside a function");
> 
> I vote for this message:
> "'super' is only valid inside a function or an 'eval' inside a function"
> 
> Do you know what we do when we have 'super' inside a function not in a class?
> It looks like we accept that syntax. Do we throw a runtime error? Should that also
> be a syntax error?

OK. I'll change text message.

According to the super inside a function not in a class, we will have syntax error also We have additional check if current function is constructor or method of class:
http://trac.webkit.org/browser/trunk/Source/JavaScriptCore/parser/Parser.cpp#L2078

>> Source/JavaScriptCore/tests/stress/generator-with-super.js:12
>> +    //debug(error);
> 
> Remove

Ups...

[GSkachkov]

Comment on attachment 274515 [details]
Patch

Committed r198472: <http://trac.webkit.org/changeset/198472>

[GSkachkov]

All reviewed patches have been landed.  Closing bug.