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Correctly fail for invalid yield in for (#9398)

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Daniel Tschinder 2019-01-23 13:39:30 -08:00 committed by GitHub
parent d4e045ac24
commit 42c5d3fc4b
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 9 additions and 7 deletions
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6
packages/babel-parser/src/parser/expression.js
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@ -127,7 +127,7 @@ export default class ExpressionParser extends LValParser {
const startPos = this.state.start;
const startLoc = this.state.startLoc;
if (this.match(tt._yield) && this.state.inGenerator) {
let left = this.parseYield();
let left = this.parseYield(noIn);
if (afterLeftParse) {
left = afterLeftParse.call(this, left, startPos, startLoc);
}
@ -2063,7 +2063,7 @@ export default class ExpressionParser extends LValParser {
// Parses yield expression inside generator.
parseYield(): N.YieldExpression {
parseYield(noIn?: ?boolean): N.YieldExpression {
const node = this.startNode();
if (this.state.inParameters) {
@ -2088,7 +2088,7 @@ export default class ExpressionParser extends LValParser {
node.argument = null;
} else {
node.delegate = this.eat(tt.star);
node.argument = this.parseMaybeAssign();
node.argument = this.parseMaybeAssign(noIn);
}
return this.finishNode(node, "YieldExpression");
}

3
packages/babel-parser/test/fixtures/es2015/yield/in-iterator-stmt/input.js vendored Normal file
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@ -0,0 +1,3 @@
function* g() {
for (yield '' in {}; ; ) ;
}

3
packages/babel-parser/test/fixtures/es2015/yield/in-iterator-stmt/options.json vendored Normal file
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@ -0,0 +1,3 @@
{
"throws": "Invalid left-hand side in for-in statement (2:7)"
}

4
scripts/tests/test262/test262_whitelist.txt
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@ -809,10 +809,6 @@ language/expressions/template-literal/invalid-legacy-octal-escape-sequence.js(de
language/expressions/template-literal/invalid-legacy-octal-escape-sequence.js(strict mode)
language/expressions/template-literal/unicode-escape-nls-err.js(default)
language/expressions/template-literal/unicode-escape-nls-err.js(strict mode)
language/expressions/yield/in-iteration-stmt.js(default)
language/expressions/yield/in-iteration-stmt.js(strict mode)
language/expressions/yield/star-in-iteration-stmt.js(default)
language/expressions/yield/star-in-iteration-stmt.js(strict mode)
language/global-code/new.target-arrow.js(default)
language/global-code/new.target-arrow.js(strict mode)
language/identifiers/unicode-escape-nls-err.js(default)