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Give nullish coalescing lower precedence than logical OR. #40

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Give nullish coalescing lower precedence than logical OR. #40

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55ad681
Give nullish coalescing lower precedence than logical OR.
DanielRosenwasser Jul 12, 2019
545e343
Fixed associativity of NullishExpression, omitted unnecessary product…
DanielRosenwasser Jul 12, 2019
46f9a4e
Updated all sites of ConditionalExpression, LogicalORExpression, Null…
DanielRosenwasser Jul 12, 2019
fa43019
Remove duplicated spec text.
DanielRosenwasser Jul 12, 2019
57ac967
Update intro.
DanielRosenwasser Jul 12, 2019
1ecbcf0
Fixed ordered list, fixed runtime semantics.
DanielRosenwasser Jul 13, 2019
8d78990
Merge branch 'master' into coalescing-with-lower-precedence
DanielRosenwasser Jul 13, 2019
e374942
Merge branch 'master' into coalescing-with-lower-precedence
DanielRosenwasser Jul 13, 2019
c93a215
Merge branch 'master' into coalescing-with-lower-precedence
DanielRosenwasser Jul 18, 2019
b66c7f1
Newline.
DanielRosenwasser Jul 20, 2019
42099a8
Merge branch 'master' into coalescing-with-lower-precedence
DanielRosenwasser Jul 22, 2019
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21 changes: 5 additions & 16 deletions spec.html
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Expand Up @@ -13,7 +13,6 @@ <h1>Introduction</h1>
<ol>
<li>The right argument of `??` is evaluated only if needed ("short circuiting").</li>
<li>`??` has lower precedence than `||`.</li>
<li>`??` cannot immediately contain, or be contained within, an `&amp;&amp;` or `||` operation.</li>
<li>The right argument is selected if the left argument is `null` or `undefined`.</li>
</ol>
</p>
Expand All @@ -24,20 +23,10 @@ <h1>Binary Logical Operators</h1>
<h2>Syntax</h2>
<emu-grammar type="definition">
<ins>
CoalesceExpression[In, Yield, Await, Coalesced] :
LogicalORExpression[?In, ?Yield, ?Await, ?Coalesced]
CoalesceExpression[?In, ?Yield, ?Await, +Coalesced] `??` LogicalORExpression[?In, ?Yield, ?Await, +Coalesced]
CoalesceExpression[In, Yield, Await] :
LogicalORExpression[?In, ?Yield, ?Await]
CoalesceExpression[?In, ?Yield, ?Await] `??` LogicalORExpression[?In, ?Yield, ?Await]
</ins>

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

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

<emu-clause id="sec-binary-logical-operators-static-semantics-isfunctiondefinition">
Expand Down Expand Up @@ -95,8 +84,8 @@ <h2>Syntax</h2>
LogicalORExpression[?In, ?Yield, ?Await] `?` AssignmentExpression[+In, ?Yield, ?Await] `:` AssignmentExpression[?In, ?Yield, ?Await]
</del>
<ins>
CoalesceExpression[?In, ?Yield, ?Await, ~Coalesced]
CoalesceExpression[?In, ?Yield, ?Await, ~Coalesced] `?` AssignmentExpression[+In, ?Yield, ?Await] `:` AssignmentExpression[+In, ?Yield, ?Await]
CoalesceExpression[?In, ?Yield, ?Await]
CoalesceExpression[?In, ?Yield, ?Await] `?` AssignmentExpression[+In, ?Yield, ?Await] `:` AssignmentExpression[+In, ?Yield, ?Await]
</ins>
</emu-grammar>

Expand Down