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Fix await binding error within static block (#13088)

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* fix: allow await within SCOPE_FUNCTION under static block

* perf: scan scopeStack for once

* add new test case

* chore: update allowlist
This commit is contained in:
Huáng Jùnliàng 2021-07-16 10:35:19 -04:00 committed by GitHub
parent 1c7da020e4
commit 6e57617138
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
15 changed files with 1198 additions and 507 deletions
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2
packages/babel-parser/src/parser/expression.js
View File

@ -2385,7 +2385,7 @@ export default class ExpressionParser extends LValParser {
if (this.prodParam.hasAwait) {
this.raise(startLoc, Errors.AwaitBindingIdentifier);
return;
} else if (this.scope.inStaticBlock && !this.scope.inNonArrowFunction) {
} else if (this.scope.inStaticBlock) {
this.raise(startLoc, Errors.AwaitBindingIdentifierInStaticBlock);
return;
} else {

11
packages/babel-parser/src/util/scope.js
View File

@ -65,7 +65,16 @@ export default class ScopeHandler<IScope: Scope = Scope> {
return (flags & SCOPE_CLASS) > 0 && (flags & SCOPE_FUNCTION) === 0;
}
get inStaticBlock() {
return (this.currentThisScopeFlags() & SCOPE_STATIC_BLOCK) > 0;
for (let i = this.scopeStack.length - 1; ; i--) {
const { flags } = this.scopeStack[i];
if (flags & SCOPE_STATIC_BLOCK) {
return true;
}
if (flags & (SCOPE_VAR | SCOPE_CLASS)) {
// function body, module body, class property initializers
return false;
}
}
}
get inNonArrowFunction() {
return (this.currentThisScopeFlags() & SCOPE_FUNCTION) > 0;

3
packages/babel-parser/test/fixtures/experimental/class-static-block/await-binding-in-arrow-function-in-static-block copy/input.js vendored Normal file
View File

@ -0,0 +1,3 @@
var C;
// await in body is allowed
C = class { static { () => await } };

100
packages/babel-parser/test/fixtures/experimental/class-static-block/await-binding-in-arrow-function-in-static-block copy/output.json vendored Normal file
View File

@ -0,0 +1,100 @@
{
"type": "File",
"start":0,"end":72,"loc":{"start":{"line":1,"column":0},"end":{"line":3,"column":37}},
"program": {
"type": "Program",
"start":0,"end":72,"loc":{"start":{"line":1,"column":0},"end":{"line":3,"column":37}},
"sourceType": "script",
"interpreter": null,
"body": [
{
"type": "VariableDeclaration",
"start":0,"end":6,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":6}},
"trailingComments": [
{
"type": "CommentLine",
"value": " await in body is allowed",
"start":7,"end":34,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":27}}
}
],
"declarations": [
{
"type": "VariableDeclarator",
"start":4,"end":5,"loc":{"start":{"line":1,"column":4},"end":{"line":1,"column":5}},
"id": {
"type": "Identifier",
"start":4,"end":5,"loc":{"start":{"line":1,"column":4},"end":{"line":1,"column":5},"identifierName":"C"},
"name": "C"
},
"init": null
}
],
"kind": "var"
},
{
"type": "ExpressionStatement",
"start":35,"end":72,"loc":{"start":{"line":3,"column":0},"end":{"line":3,"column":37}},
"leadingComments": [
{
"type": "CommentLine",
"value": " await in body is allowed",
"start":7,"end":34,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":27}}
}
],
"expression": {
"type": "AssignmentExpression",
"start":35,"end":71,"loc":{"start":{"line":3,"column":0},"end":{"line":3,"column":36}},
"operator": "=",
"left": {
"type": "Identifier",
"start":35,"end":36,"loc":{"start":{"line":3,"column":0},"end":{"line":3,"column":1},"identifierName":"C"},
"name": "C"
},
"right": {
"type": "ClassExpression",
"start":39,"end":71,"loc":{"start":{"line":3,"column":4},"end":{"line":3,"column":36}},
"id": null,
"superClass": null,
"body": {
"type": "ClassBody",
"start":45,"end":71,"loc":{"start":{"line":3,"column":10},"end":{"line":3,"column":36}},
"body": [
{
"type": "StaticBlock",
"start":47,"end":69,"loc":{"start":{"line":3,"column":12},"end":{"line":3,"column":34}},
"body": [
{
"type": "ExpressionStatement",
"start":56,"end":67,"loc":{"start":{"line":3,"column":21},"end":{"line":3,"column":32}},
"expression": {
"type": "ArrowFunctionExpression",
"start":56,"end":67,"loc":{"start":{"line":3,"column":21},"end":{"line":3,"column":32}},
"id": null,
"generator": false,
"async": false,
"params": [],
"body": {
"type": "Identifier",
"start":62,"end":67,"loc":{"start":{"line":3,"column":27},"end":{"line":3,"column":32},"identifierName":"await"},
"name": "await"
}
}
}
]
}
]
}
}
}
}
],
"directives": []
},
"comments": [
{
"type": "CommentLine",
"value": " await in body is allowed",
"start":7,"end":34,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":27}}
}
]
}

7
packages/babel-parser/test/fixtures/experimental/class-static-block/await-binding-in-async-arrow-function-in-static-block/input.js vendored Normal file
View File

@ -0,0 +1,7 @@
var C;
// await is not allowed in async arrow
C = class { static { async (await) => {} } };
C = class { static { async (x = await) => {} } };
C = class { static { async ({ [await]: x }) => {} } };

251
packages/babel-parser/test/fixtures/experimental/class-static-block/await-binding-in-async-arrow-function-in-static-block/output.json vendored Normal file
View File

@ -0,0 +1,251 @@
{
"type": "File",
"start":0,"end":198,"loc":{"start":{"line":1,"column":0},"end":{"line":7,"column":54}},
"errors": [
"SyntaxError: Can not use 'await' as identifier inside a static block. (3:28)",
"SyntaxError: Can not use 'await' as identifier inside a static block. (5:32)",
"SyntaxError: Can not use 'await' as identifier inside a static block. (7:31)"
],
"program": {
"type": "Program",
"start":0,"end":198,"loc":{"start":{"line":1,"column":0},"end":{"line":7,"column":54}},
"sourceType": "script",
"interpreter": null,
"body": [
{
"type": "VariableDeclaration",
"start":0,"end":6,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":6}},
"trailingComments": [
{
"type": "CommentLine",
"value": " await is not allowed in async arrow",
"start":7,"end":45,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":38}}
}
],
"declarations": [
{
"type": "VariableDeclarator",
"start":4,"end":5,"loc":{"start":{"line":1,"column":4},"end":{"line":1,"column":5}},
"id": {
"type": "Identifier",
"start":4,"end":5,"loc":{"start":{"line":1,"column":4},"end":{"line":1,"column":5},"identifierName":"C"},
"name": "C"
},
"init": null
}
],
"kind": "var"
},
{
"type": "ExpressionStatement",
"start":46,"end":91,"loc":{"start":{"line":3,"column":0},"end":{"line":3,"column":45}},
"leadingComments": [
{
"type": "CommentLine",
"value": " await is not allowed in async arrow",
"start":7,"end":45,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":38}}
}
],
"expression": {
"type": "AssignmentExpression",
"start":46,"end":90,"loc":{"start":{"line":3,"column":0},"end":{"line":3,"column":44}},
"operator": "=",
"left": {
"type": "Identifier",
"start":46,"end":47,"loc":{"start":{"line":3,"column":0},"end":{"line":3,"column":1},"identifierName":"C"},
"name": "C"
},
"right": {
"type": "ClassExpression",
"start":50,"end":90,"loc":{"start":{"line":3,"column":4},"end":{"line":3,"column":44}},
"id": null,
"superClass": null,
"body": {
"type": "ClassBody",
"start":56,"end":90,"loc":{"start":{"line":3,"column":10},"end":{"line":3,"column":44}},
"body": [
{
"type": "StaticBlock",
"start":58,"end":88,"loc":{"start":{"line":3,"column":12},"end":{"line":3,"column":42}},
"body": [
{
"type": "ExpressionStatement",
"start":67,"end":86,"loc":{"start":{"line":3,"column":21},"end":{"line":3,"column":40}},
"expression": {
"type": "ArrowFunctionExpression",
"start":67,"end":86,"loc":{"start":{"line":3,"column":21},"end":{"line":3,"column":40}},
"id": null,
"generator": false,
"async": true,
"params": [
{
"type": "Identifier",
"start":74,"end":79,"loc":{"start":{"line":3,"column":28},"end":{"line":3,"column":33},"identifierName":"await"},
"name": "await"
}
],
"body": {
"type": "BlockStatement",
"start":84,"end":86,"loc":{"start":{"line":3,"column":38},"end":{"line":3,"column":40}},
"body": [],
"directives": []
}
}
}
]
}
]
}
}
}
},
{
"type": "ExpressionStatement",
"start":93,"end":142,"loc":{"start":{"line":5,"column":0},"end":{"line":5,"column":49}},
"expression": {
"type": "AssignmentExpression",
"start":93,"end":141,"loc":{"start":{"line":5,"column":0},"end":{"line":5,"column":48}},
"operator": "=",
"left": {
"type": "Identifier",
"start":93,"end":94,"loc":{"start":{"line":5,"column":0},"end":{"line":5,"column":1},"identifierName":"C"},
"name": "C"
},
"right": {
"type": "ClassExpression",
"start":97,"end":141,"loc":{"start":{"line":5,"column":4},"end":{"line":5,"column":48}},
"id": null,
"superClass": null,
"body": {
"type": "ClassBody",
"start":103,"end":141,"loc":{"start":{"line":5,"column":10},"end":{"line":5,"column":48}},
"body": [
{
"type": "StaticBlock",
"start":105,"end":139,"loc":{"start":{"line":5,"column":12},"end":{"line":5,"column":46}},
"body": [
{
"type": "ExpressionStatement",
"start":114,"end":137,"loc":{"start":{"line":5,"column":21},"end":{"line":5,"column":44}},
"expression": {
"type": "ArrowFunctionExpression",
"start":114,"end":137,"loc":{"start":{"line":5,"column":21},"end":{"line":5,"column":44}},
"id": null,
"generator": false,
"async": true,
"params": [
{
"type": "AssignmentPattern",
"start":121,"end":130,"loc":{"start":{"line":5,"column":28},"end":{"line":5,"column":37}},
"left": {
"type": "Identifier",
"start":121,"end":122,"loc":{"start":{"line":5,"column":28},"end":{"line":5,"column":29},"identifierName":"x"},
"name": "x"
},
"right": {
"type": "Identifier",
"start":125,"end":130,"loc":{"start":{"line":5,"column":32},"end":{"line":5,"column":37},"identifierName":"await"},
"name": "await"
}
}
],
"body": {
"type": "BlockStatement",
"start":135,"end":137,"loc":{"start":{"line":5,"column":42},"end":{"line":5,"column":44}},
"body": [],
"directives": []
}
}
}
]
}
]
}
}
}
},
{
"type": "ExpressionStatement",
"start":144,"end":198,"loc":{"start":{"line":7,"column":0},"end":{"line":7,"column":54}},
"expression": {
"type": "AssignmentExpression",
"start":144,"end":197,"loc":{"start":{"line":7,"column":0},"end":{"line":7,"column":53}},
"operator": "=",
"left": {
"type": "Identifier",
"start":144,"end":145,"loc":{"start":{"line":7,"column":0},"end":{"line":7,"column":1},"identifierName":"C"},
"name": "C"
},
"right": {
"type": "ClassExpression",
"start":148,"end":197,"loc":{"start":{"line":7,"column":4},"end":{"line":7,"column":53}},
"id": null,
"superClass": null,
"body": {
"type": "ClassBody",
"start":154,"end":197,"loc":{"start":{"line":7,"column":10},"end":{"line":7,"column":53}},
"body": [
{
"type": "StaticBlock",
"start":156,"end":195,"loc":{"start":{"line":7,"column":12},"end":{"line":7,"column":51}},
"body": [
{
"type": "ExpressionStatement",
"start":165,"end":193,"loc":{"start":{"line":7,"column":21},"end":{"line":7,"column":49}},
"expression": {
"type": "ArrowFunctionExpression",
"start":165,"end":193,"loc":{"start":{"line":7,"column":21},"end":{"line":7,"column":49}},
"id": null,
"generator": false,
"async": true,
"params": [
{
"type": "ObjectPattern",
"start":172,"end":186,"loc":{"start":{"line":7,"column":28},"end":{"line":7,"column":42}},
"properties": [
{
"type": "ObjectProperty",
"start":174,"end":184,"loc":{"start":{"line":7,"column":30},"end":{"line":7,"column":40}},
"method": false,
"computed": true,
"key": {
"type": "Identifier",
"start":175,"end":180,"loc":{"start":{"line":7,"column":31},"end":{"line":7,"column":36},"identifierName":"await"},
"name": "await"
},
"shorthand": false,
"value": {
"type": "Identifier",
"start":183,"end":184,"loc":{"start":{"line":7,"column":39},"end":{"line":7,"column":40},"identifierName":"x"},
"name": "x"
}
}
]
}
],
"body": {
"type": "BlockStatement",
"start":191,"end":193,"loc":{"start":{"line":7,"column":47},"end":{"line":7,"column":49}},
"body": [],
"directives": []
}
}
}
]
}
]
}
}
}
}
],
"directives": []
},
"comments": [
{
"type": "CommentLine",
"value": " await is not allowed in async arrow",
"start":7,"end":45,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":38}}
}
]
}

2
packages/babel-parser/test/fixtures/experimental/class-static-block/await-binding-in-function-in-static-block/input.js vendored
View File

@ -7,3 +7,5 @@ C = class { static { function f(await) {} } };
C = class { static { function f(x = await) {} } };
C = class { static { function f({ [await]: x }) {} } };
// await in function expression is allowed
C = class { static { (function await() {}) } };

85
packages/babel-parser/test/fixtures/experimental/class-static-block/await-binding-in-function-in-static-block/output.json vendored
View File

@ -1,9 +1,9 @@
{
"type": "File",
"start":0,"end":213,"loc":{"start":{"line":1,"column":0},"end":{"line":9,"column":55}},
"start":0,"end":304,"loc":{"start":{"line":1,"column":0},"end":{"line":11,"column":47}},
"program": {
"type": "Program",
"start":0,"end":213,"loc":{"start":{"line":1,"column":0},"end":{"line":9,"column":55}},
"start":0,"end":304,"loc":{"start":{"line":1,"column":0},"end":{"line":11,"column":47}},
"sourceType": "script",
"interpreter": null,
"body": [
@ -208,6 +208,13 @@
{
"type": "ExpressionStatement",
"start":158,"end":213,"loc":{"start":{"line":9,"column":0},"end":{"line":9,"column":55}},
"trailingComments": [
{
"type": "CommentLine",
"value": " await in function expression is allowed",
"start":214,"end":256,"loc":{"start":{"line":10,"column":0},"end":{"line":10,"column":42}}
}
],
"expression": {
"type": "AssignmentExpression",
"start":158,"end":212,"loc":{"start":{"line":9,"column":0},"end":{"line":9,"column":54}},
@ -278,8 +285,80 @@
}
}
}
},
{
"type": "ExpressionStatement",
"start":257,"end":304,"loc":{"start":{"line":11,"column":0},"end":{"line":11,"column":47}},
"leadingComments": [
{
"type": "CommentLine",
"value": " await in function expression is allowed",
"start":214,"end":256,"loc":{"start":{"line":10,"column":0},"end":{"line":10,"column":42}}
}
],
"expression": {
"type": "AssignmentExpression",
"start":257,"end":303,"loc":{"start":{"line":11,"column":0},"end":{"line":11,"column":46}},
"operator": "=",
"left": {
"type": "Identifier",
"start":257,"end":258,"loc":{"start":{"line":11,"column":0},"end":{"line":11,"column":1},"identifierName":"C"},
"name": "C"
},
"right": {
"type": "ClassExpression",
"start":261,"end":303,"loc":{"start":{"line":11,"column":4},"end":{"line":11,"column":46}},
"id": null,
"superClass": null,
"body": {
"type": "ClassBody",
"start":267,"end":303,"loc":{"start":{"line":11,"column":10},"end":{"line":11,"column":46}},
"body": [
{
"type": "StaticBlock",
"start":269,"end":301,"loc":{"start":{"line":11,"column":12},"end":{"line":11,"column":44}},
"body": [
{
"type": "ExpressionStatement",
"start":278,"end":299,"loc":{"start":{"line":11,"column":21},"end":{"line":11,"column":42}},
"expression": {
"type": "FunctionExpression",
"start":279,"end":298,"loc":{"start":{"line":11,"column":22},"end":{"line":11,"column":41}},
"extra": {
"parenthesized": true,
"parenStart": 278
},
"id": {
"type": "Identifier",
"start":288,"end":293,"loc":{"start":{"line":11,"column":31},"end":{"line":11,"column":36},"identifierName":"await"},
"name": "await"
},
"generator": false,
"async": false,
"params": [],
"body": {
"type": "BlockStatement",
"start":296,"end":298,"loc":{"start":{"line":11,"column":39},"end":{"line":11,"column":41}},
"body": [],
"directives": []
}
}
}
]
}
]
}
}
}
}
],
"directives": []
}
},
"comments": [
{
"type": "CommentLine",
"value": " await in function expression is allowed",
"start":214,"end":256,"loc":{"start":{"line":10,"column":0},"end":{"line":10,"column":42}}
}
]
}

3
packages/babel-parser/test/fixtures/experimental/class-static-block/await-binding-in-initializer-in-static-block/input.js vendored Normal file
View File

@ -0,0 +1,3 @@
var C;
C = class { static { class D { x = await } } };

6
packages/babel-parser/test/fixtures/experimental/class-static-block/await-binding-in-initializer-in-static-block/options.json vendored Normal file
View File

@ -0,0 +1,6 @@
{
"plugins": [
"classStaticBlock",
"classProperties"
]
}

94
packages/babel-parser/test/fixtures/experimental/class-static-block/await-binding-in-initializer-in-static-block/output.json vendored Normal file
View File

@ -0,0 +1,94 @@
{
"type": "File",
"start":0,"end":55,"loc":{"start":{"line":1,"column":0},"end":{"line":3,"column":47}},
"program": {
"type": "Program",
"start":0,"end":55,"loc":{"start":{"line":1,"column":0},"end":{"line":3,"column":47}},
"sourceType": "script",
"interpreter": null,
"body": [
{
"type": "VariableDeclaration",
"start":0,"end":6,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":6}},
"declarations": [
{
"type": "VariableDeclarator",
"start":4,"end":5,"loc":{"start":{"line":1,"column":4},"end":{"line":1,"column":5}},
"id": {
"type": "Identifier",
"start":4,"end":5,"loc":{"start":{"line":1,"column":4},"end":{"line":1,"column":5},"identifierName":"C"},
"name": "C"
},
"init": null
}
],
"kind": "var"
},
{
"type": "ExpressionStatement",
"start":8,"end":55,"loc":{"start":{"line":3,"column":0},"end":{"line":3,"column":47}},
"expression": {
"type": "AssignmentExpression",
"start":8,"end":54,"loc":{"start":{"line":3,"column":0},"end":{"line":3,"column":46}},
"operator": "=",
"left": {
"type": "Identifier",
"start":8,"end":9,"loc":{"start":{"line":3,"column":0},"end":{"line":3,"column":1},"identifierName":"C"},
"name": "C"
},
"right": {
"type": "ClassExpression",
"start":12,"end":54,"loc":{"start":{"line":3,"column":4},"end":{"line":3,"column":46}},
"id": null,
"superClass": null,
"body": {
"type": "ClassBody",
"start":18,"end":54,"loc":{"start":{"line":3,"column":10},"end":{"line":3,"column":46}},
"body": [
{
"type": "StaticBlock",
"start":20,"end":52,"loc":{"start":{"line":3,"column":12},"end":{"line":3,"column":44}},
"body": [
{
"type": "ClassDeclaration",
"start":29,"end":50,"loc":{"start":{"line":3,"column":21},"end":{"line":3,"column":42}},
"id": {
"type": "Identifier",
"start":35,"end":36,"loc":{"start":{"line":3,"column":27},"end":{"line":3,"column":28},"identifierName":"D"},
"name": "D"
},
"superClass": null,
"body": {
"type": "ClassBody",
"start":37,"end":50,"loc":{"start":{"line":3,"column":29},"end":{"line":3,"column":42}},
"body": [
{
"type": "ClassProperty",
"start":39,"end":48,"loc":{"start":{"line":3,"column":31},"end":{"line":3,"column":40}},
"static": false,
"key": {
"type": "Identifier",
"start":39,"end":40,"loc":{"start":{"line":3,"column":31},"end":{"line":3,"column":32},"identifierName":"x"},
"name": "x"
},
"computed": false,
"value": {
"type": "Identifier",
"start":43,"end":48,"loc":{"start":{"line":3,"column":35},"end":{"line":3,"column":40},"identifierName":"await"},
"name": "await"
}
}
]
}
}
]
}
]
}
}
}
}
],
"directives": []
}
}

34
packages/babel-parser/test/fixtures/experimental/class-static-block/await-binding-in-static-block/input.js vendored
View File

@ -1,27 +1,29 @@
var C;
// This file enumerates all the disallowed cases, for allowed cases, see await-binding-*
C = class { static { await } };
C = class { static { () => await } };
C = class { static { (await) => {} } };
C = class { static { (await) } };
C = class { static { async (await) => {} } };
C = class { static { async (await) } };
C = class { static { ({ [await]: x}) => {} } };
C = class { static { ({ [await]: x}) } };
C = class { static { async ({ [await]: x}) => {} } };
C = class { static { async ({ [await]: x}) } };
async (x = class { static { await } }) => {};
C = class { static { function await() {} } };
// await as label is not allowed
C = class { static { await: 0 } };
C = class { static { class D { [await] } } };
// await binding in function declaration is not allowed
C = class { static { function await() {} } };
// await binding in class declaration is not allowed
C = class { static { class await {} } };
// await binding in class expression is not allowed
C = class { static { (class await {}) } };
// await in arrow parameters is not allowed
C = class { static { (await) => {} } };
C = class { static { (x = await) => {} } };
C = class { static { ({ [await]: x }) => {} } };
C = class { static { { await } } };

3
packages/babel-parser/test/fixtures/experimental/class-static-block/await-binding-in-static-block/options.json vendored Normal file
View File

@ -0,0 +1,3 @@
{
"plugins": ["classStaticBlock", "classProperties"]
}

1086
packages/babel-parser/test/fixtures/experimental/class-static-block/await-binding-in-static-block/output.json vendored
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18
scripts/parser-tests/test262/allowlist.txt
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@ -1,22 +1,4 @@
language/expressions/object/identifier-shorthand-static-init-await-valid.js(default)
language/expressions/object/identifier-shorthand-static-init-await-valid.js(strict mode)
language/import/json-invalid.js(default)
language/import/json-invalid.js(strict mode)
language/import/json-named-bindings.js(default)
language/import/json-named-bindings.js(strict mode)
language/statements/class/static-init-await-binding-valid.js(default)
language/statements/class/static-init-await-binding-valid.js(strict mode)
language/statements/const/static-init-await-binding-valid.js(default)
language/statements/const/static-init-await-binding-valid.js(strict mode)
language/statements/function/static-init-await-binding-valid.js(default)
language/statements/function/static-init-await-binding-valid.js(strict mode)
language/statements/let/static-init-await-binding-valid.js(default)
language/statements/let/static-init-await-binding-valid.js(strict mode)
language/statements/try/static-init-await-binding-valid.js(default)
language/statements/try/static-init-await-binding-valid.js(strict mode)
language/statements/variable/dstr/ary-ptrn-elem-id-static-init-await-valid.js(default)
language/statements/variable/dstr/ary-ptrn-elem-id-static-init-await-valid.js(strict mode)
language/statements/variable/dstr/obj-ptrn-elem-id-static-init-await-valid.js(default)
language/statements/variable/dstr/obj-ptrn-elem-id-static-init-await-valid.js(strict mode)
language/statements/variable/static-init-await-binding-valid.js(default)
language/statements/variable/static-init-await-binding-valid.js(strict mode)