cerxes/babel
3
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Disallow setters to have RestElement (#7498)

Browse Source
This commit is contained in:
Daniel Tschinder 2018-03-06 01:03:59 +01:00 committed by Brian Ng
parent eb2a0b0fcd
commit 5d615dd198
15 changed files with 73 additions and 211 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
packages/babylon/src/parser/expression.js
View File

@ -1383,17 +1383,24 @@ export default class ExpressionParser extends LValParser {
}
// get methods aren't allowed to have any parameters
// set methods must have exactly 1 parameter
checkGetterSetterParamCount(method: N.ObjectMethod | N.ClassMethod): void {
// set methods must have exactly 1 parameter which is not a rest parameter
checkGetterSetterParams(method: N.ObjectMethod | N.ClassMethod): void {
const paramCount = method.kind === "get" ? 0 : 1;
const start = method.start;
if (method.params.length !== paramCount) {
const start = method.start;
if (method.kind === "get") {
this.raise(start, "getter should have no params");
this.raise(start, "getter must not have any formal parameters");
} else {
this.raise(start, "setter should have exactly one param");
this.raise(start, "setter must have exactly one formal parameter");
}
}
if (method.kind === "set" && method.params[0].type === "RestElement") {
this.raise(
start,
"setter function argument must not be a rest parameter",
);
}
}
parseObjectMethod(
@ -1426,7 +1433,7 @@ export default class ExpressionParser extends LValParser {
/* isConstructor */ false,
"ObjectMethod",
);
this.checkGetterSetterParamCount(prop);
this.checkGetterSetterParams(prop);
return prop;
}
}

2
packages/babylon/src/parser/statement.js
View File

@ -1161,7 +1161,7 @@ export default class StatementParser extends ExpressionParser {
);
}
this.checkGetterSetterParamCount(publicMethod);
this.checkGetterSetterParams(publicMethod);
} else if (this.isLineTerminator()) {
// an uninitialized class property (due to ASI, since we don't otherwise recognize the next token)
if (isPrivate) {

17
packages/babylon/src/plugins/estree.js
View File

@ -82,17 +82,24 @@ export default (superClass: Class<Parser>): Class<Parser> =>
}
}
checkGetterSetterParamCount(prop: N.ObjectMethod | N.ClassMethod): void {
checkGetterSetterParams(method: N.ObjectMethod | N.ClassMethod): void {
const prop = ((method: any): N.EstreeProperty | N.EstreeMethodDefinition);
const paramCount = prop.kind === "get" ? 0 : 1;
// $FlowFixMe (prop.value present for ObjectMethod, but for ClassMethod should use prop.params?)
const start = prop.start;
if (prop.value.params.length !== paramCount) {
const start = prop.start;
if (prop.kind === "get") {
this.raise(start, "getter should have no params");
this.raise(start, "getter must not have any formal parameters");
} else {
this.raise(start, "setter should have exactly one param");
this.raise(start, "setter must have exactly one formal parameter");
}
}
if (prop.kind === "set" && prop.value.params[0].type === "RestElement") {
this.raise(
start,
"setter function argument must not be a rest parameter",
);
}
}
checkLVal(

23
packages/babylon/src/plugins/flow.js
View File

@ -763,7 +763,7 @@ export default (superClass: Class<Parser>): Class<Parser> =>
this.startNodeAt(node.start, node.loc.start),
);
if (kind === "get" || kind === "set") {
this.flowCheckGetterSetterParamCount(node);
this.flowCheckGetterSetterParams(node);
}
} else {
if (kind !== "init") this.unexpected();
@ -783,20 +783,29 @@ export default (superClass: Class<Parser>): Class<Parser> =>
}
}
// This is similar to checkGetterSetterParamCount, but as
// This is similar to checkGetterSetterParams, but as
// babylon uses non estree properties we cannot reuse it here
flowCheckGetterSetterParamCount(
flowCheckGetterSetterParams(
property: N.FlowObjectTypeProperty | N.FlowObjectTypeSpreadProperty,
): void {
const paramCount = property.kind === "get" ? 0 : 1;
if (property.value.params.length !== paramCount) {
const start = property.start;
const start = property.start;
const length =
property.value.params.length + (property.value.rest ? 1 : 0);
if (length !== paramCount) {
if (property.kind === "get") {
this.raise(start, "getter should have no params");
this.raise(start, "getter must not have any formal parameters");
} else {
this.raise(start, "setter should have exactly one param");
this.raise(start, "setter must have exactly one formal parameter");
}
}
if (property.kind === "set" && property.value.rest) {
this.raise(
start,
"setter function argument must not be a rest parameter",
);
}
}
flowObjectTypeSemicolon(): void {

12
packages/babylon/src/types.js
View File

@ -941,6 +941,18 @@ export type EstreeProperty = NodeBase & {
variance?: ?FlowVariance,
};
export type EstreeMethodDefinition = NodeBase & {
type: "MethodDefinition",
static: boolean,
key: Expression,
computed: boolean,
value: Expression,
decorators: $ReadOnlyArray<Decorator>,
kind?: "get" | "set" | "method",
variance?: ?FlowVariance,
};
// === === === ===
// TypeScript
// === === === ===

2
packages/babylon/test/fixtures/es2015/class-methods/getter-signature/options.json vendored
View File

@ -1,3 +1,3 @@
{
"throws": "getter should have no params (2:2)"
"throws": "getter must not have any formal parameters (2:2)"
}

2
packages/babylon/test/fixtures/es2015/uncategorised/347/options.json vendored
View File

@ -1,3 +1,3 @@
{
"throws": "setter should have exactly one param (1:10)"
"throws": "setter must have exactly one formal parameter (1:10)"
}

3
packages/babylon/test/fixtures/esprima/rest-parameter/invalid-setter-rest/options.json vendored Normal file
View File

@ -0,0 +1,3 @@
{
"throws": "setter function argument must not be a rest parameter (1:6)"
}

188
packages/babylon/test/fixtures/esprima/rest-parameter/invalid-setter-rest/output.json vendored
View File

@ -1,188 +0,0 @@
{
"type": "File",
"start": 0,
"end": 22,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 22
}
},
"program": {
"type": "Program",
"start": 0,
"end": 22,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 22
}
},
"sourceType": "script",
"body": [
{
"type": "ExpressionStatement",
"start": 0,
"end": 22,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 22
}
},
"expression": {
"type": "AssignmentExpression",
"start": 0,
"end": 22,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 22
}
},
"operator": "=",
"left": {
"type": "Identifier",
"start": 0,
"end": 1,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 1
},
"identifierName": "x"
},
"name": "x"
},
"right": {
"type": "ObjectExpression",
"start": 4,
"end": 22,
"loc": {
"start": {
"line": 1,
"column": 4
},
"end": {
"line": 1,
"column": 22
}
},
"properties": [
{
"type": "ObjectMethod",
"start": 6,
"end": 20,
"loc": {
"start": {
"line": 1,
"column": 6
},
"end": {
"line": 1,
"column": 20
}
},
"method": false,
"key": {
"type": "Identifier",
"start": 10,
"end": 11,
"loc": {
"start": {
"line": 1,
"column": 10
},
"end": {
"line": 1,
"column": 11
},
"identifierName": "f"
},
"name": "f"
},
"computed": false,
"kind": "set",
"id": null,
"generator": false,
"async": false,
"params": [
{
"type": "RestElement",
"start": 12,
"end": 16,
"loc": {
"start": {
"line": 1,
"column": 12
},
"end": {
"line": 1,
"column": 16
}
},
"argument": {
"type": "Identifier",
"start": 15,
"end": 16,
"loc": {
"start": {
"line": 1,
"column": 15
},
"end": {
"line": 1,
"column": 16
},
"identifierName": "y"
},
"name": "y"
}
}
],
"body": {
"type": "BlockStatement",
"start": 18,
"end": 20,
"loc": {
"start": {
"line": 1,
"column": 18
},
"end": {
"line": 1,
"column": 20
}
},
"body": [],
"directives": []
}
}
]
}
}
}
],
"directives": []
}
}

3
packages/babylon/test/fixtures/flow/object-types/invalid-getter-param-count-rest/input.js vendored Normal file
View File

@ -0,0 +1,3 @@
type B = {
get a(...foo): number;
}

3
packages/babylon/test/fixtures/flow/object-types/invalid-getter-param-count-rest/options.json vendored Normal file
View File

@ -0,0 +1,3 @@
{
"throws": "getter must not have any formal parameters (2:2)"
}

2
packages/babylon/test/fixtures/flow/object-types/invalid-getter-param-count/options.json vendored
View File

@ -1,3 +1,3 @@
{
"throws": "getter should have no params (2:2)"
"throws": "getter must not have any formal parameters (2:2)"
}

2
packages/babylon/test/fixtures/flow/object-types/invalid-setter-param-count/options.json vendored
View File

@ -1,3 +1,3 @@
{
"throws": "setter should have exactly one param (2:2)"
"throws": "setter must have exactly one formal parameter (2:2)"
}

3
packages/babylon/test/fixtures/flow/object-types/invalid-setter-param-type/input.js vendored Normal file
View File

@ -0,0 +1,3 @@
type B = {
set a(...w): void;
}

3
packages/babylon/test/fixtures/flow/object-types/invalid-setter-param-type/options.json vendored Normal file
View File

@ -0,0 +1,3 @@
{
"throws": "setter function argument must not be a rest parameter (2:2)"
}