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Add grammar flags to disallow mixing ?? with || and &&. #39

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Jul 13, 2019
Merged

Add grammar flags to disallow mixing ?? with || and &&. #39

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febd12d
Add grammar flags to disallow mixing ?? with || and &&.
DanielRosenwasser Jul 12, 2019
f486976
Fix associativity of NullishExpression.
DanielRosenwasser Jul 12, 2019
ad8c179
Updated all sites of ConditionalExpression, LogicalORExpression, Null…
DanielRosenwasser Jul 12, 2019
04359c2
Remove duplicated spec text.
DanielRosenwasser Jul 12, 2019
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25 changes: 21 additions & 4 deletions spec.html
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Expand Up @@ -22,10 +22,27 @@ <h1>Introduction</h1>
<h1>Syntax</h1>

<emu-grammar>
LogicalORExpression[In, Yield, Await] :
LogicalANDExpression[?In, ?Yield, ?Await]
LogicalORExpression[?In, ?Yield, ?Await] `||` LogicalANDExpression[?In, ?Yield, ?Await]
<ins>LogicalORExpression[?In, ?Yield, ?Await] `??` LogicalANDExpression[?In, ?Yield, ?Await]</ins>
ConditionalExpression[In, Yield, Await] :
<del>LogicalORExpression[?In, ?Yield, ?Await]</del>
<del>LogicalORExpression[?In, ?Yield, ?Await] `?` AssignmentExpression[+In, ?Yield, ?Await] `:` AssignmentExpression[?In, ?Yield, ?Await]</del>
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<ins>NullishExpression[?In, ?Yield, ?Await, ~Nullish]</ins>
<ins>NullishExpression[?In, ?Yield, ?Await, ~Nullish] `?` AssignmentExpression[+In, ?Yield, ?Await] `:` AssignmentExpression[+In, ?Yield, ?Await]</ins>

<ins>
NullishExpression[In, Yield, Await, Nullish] :
LogicalORExpression[?In, ?Yield, ?Await, ?Nullish]
NullishExpression[?In, ?Yield, ?Await, +Nullish] `??` LogicalORExpression[?In, ?Yield, ?Await, +Nullish]
</ins>

LogicalORExpression[In, Yield, Await, <ins>Nullish</ins>] :
LogicalANDExpression[?In, ?Yield, ?Await, <ins>?Nullish</ins>]
<del>LogicalORExpression[?In, ?Yield, ?Await] `||` LogicalANDExpression[?In, ?Yield, ?Await]</del>
<ins>[~Nullish] LogicalORExpression[?In, ?Yield, ?Await, ~Nullish] `||` LogicalANDExpression[?In, ?Yield, ?Await, ~Nullish]</ins>

LogicalANDExpression[In, Yield, Await, <ins>Nullish</ins>] :
BitwiseORExpression[?In, ?Yield, ?Await]
<del>LogicalANDExpression[?In, ?Yield, ?Await] `&&` BitwiseORExpression[?In, ?Yield, ?Await]</del>
<ins>[~Nullish] LogicalANDExpression[?In, ?Yield, ?Await] `&&` BitwiseORExpression[?In, ?Yield, ?Await]</ins>
</emu-grammar>
</emu-clause>

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