> Le 25 août 2015 à 19:25, Mark S. Miller <erig...@google.com> a écrit : > > It also does not work. x ** y ** z, if we allow it at all, must be right > associative. It must parse as x ** (y ** z). >
Unless I missed something, it *is* right-associative. —Claude > > On Tue, Aug 25, 2015 at 10:08 AM, Mark S. Miller <erig...@google.com > <mailto:erig...@google.com>> wrote: > It does not work as well as simply omitting ** entirely. > > > On Tue, Aug 25, 2015 at 9:42 AM, Isiah Meadows <isiahmead...@gmail.com > <mailto:isiahmead...@gmail.com>> wrote: > I like this. It works very well. > > On Tue, Aug 25, 2015, 12:38 Claude Pache <claude.pa...@gmail.com > <mailto:claude.pa...@gmail.com>> wrote: > > I think the following grammar could work. > Replace the current (ES2015) PostfixExpression production with: > > ``` > IncrementExpression: > LeftHandSideExpression > LeftHandSideExpression [no LineTerminator here] ++ > LeftHandSideExpression [no LineTerminator here] -- > ++ LeftHandSideExpression > -- LeftHandSideExpression > ``` > > And define UnaryExpression as: > > ``` > UnaryExpression: > IncrementExpression > delete UnaryExpression > void UnaryExpression > typeof UnaryExpression > ++ UnaryExpression > + UnaryExpression > -- UnaryExpression > - UnaryExpression > ~ UnaryExpression > ! UnaryExpression > IncrementExpression ** UnaryExpression > ``` > > where the following production (which exists only to avoid to confusingly > interpret, e.g., `++x++` as `+ +x++`): > > ``` > UnaryExpression: > ++ UnaryExpression > -- UnaryExpression > ``` > > yields a static SyntaxError (or a static ReferenceError if we want to be 100% > compatible ES2015). > > > That way, we have the following expected behaviour: > * in/decrement operators bind most tightly; > * unary and exponentiation operators are applied from right to left. > > > —Claude > > > _______________________________________________ > es-discuss mailing list > es-discuss@mozilla.org <mailto:es-discuss@mozilla.org> > https://mail.mozilla.org/listinfo/es-discuss > <https://mail.mozilla.org/listinfo/es-discuss> > > > > -- > Cheers, > --MarkM > > > > -- > Cheers, > --MarkM
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