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Add support for leading pipes in Flow type alias RHS syntax

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This commit is contained in:
Jeff Morrison 2016-02-04 15:50:19 -05:00
parent bcc32da0d9
commit e6951e99f0
8 changed files with 497 additions and 2 deletions
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10
packages/babel-generator/test/fixtures/flow/type-alias/actual.js vendored
View File

@ -2,3 +2,13 @@ type FBID = number;
type Foo<T> = Bar<T>;
type Maybe<T> = _Maybe<T, *>;
export type Foo = number;
type union =
| {type: "A"}
| {type: "B"}
;
type overloads =
& ((x: string) => number)
& ((x: number) => string)
;

4
packages/babel-generator/test/fixtures/flow/type-alias/expected.js vendored
View File

@ -2,3 +2,7 @@ type FBID = number;
type Foo<T> = Bar<T>;
type Maybe<T> = _Maybe<T, *>;
export type Foo = number;
type union = { type: "A" } | { type: "B" };
type overloads = (x: string) => number & (x: number) => string;

10
packages/babel-plugin-transform-flow-comments/test/fixtures/flow-comments/type-alias/actual.js vendored
View File

@ -3,3 +3,13 @@ type A = number;
type B = {
name: string;
};
type union =
| {type: "A"}
| {type: "B"}
;
type overloads =
& ((x: string) => number)
& ((x: number) => string)
;

8
packages/babel-plugin-transform-flow-comments/test/fixtures/flow-comments/type-alias/expected.js vendored
View File

@ -3,3 +3,11 @@ function a() {}
/*:: type B = {
name: string;
};*/
/*:: type union =
| {type: "A"}
| {type: "B"}
;*/
/*:: type overloads =
& ((x: string) => number)
& ((x: number) => string)
;*/

10
packages/babel-plugin-transform-flow-strip-types/test/fixtures/strip-types/strip-type-alias/actual.js vendored
View File

@ -1,3 +1,13 @@
type FBID = number;
type Foo<T> = Bar<T>
export type Foo = number;
type union =
| {type: "A"}
| {type: "B"}
;
type overloads =
& ((x: string) => number)
& ((x: number) => string)
;

12
packages/babylon/src/plugins/flow.js
View File

@ -3,10 +3,15 @@ import Parser from "../parser";
let pp = Parser.prototype;
pp.flowParseTypeInitialiser = function (tok) {
pp.flowParseTypeInitialiser = function (tok, allowLeadingPipeOrAnd) {
let oldInType = this.state.inType;
this.state.inType = true;
this.expect(tok || tt.colon);
if (allowLeadingPipeOrAnd) {
if (this.match(tt.bitwiseAND) || this.match(tt.bitwiseOR)) {
this.next();
}
}
let type = this.flowParseType();
this.state.inType = oldInType;
return type;
@ -172,7 +177,10 @@ pp.flowParseTypeAlias = function (node) {
node.typeParameters = null;
}
node.right = this.flowParseTypeInitialiser(tt.eq);
node.right = this.flowParseTypeInitialiser(
tt.eq,
/*allowLeadingPipeOrAnd*/ true
);
this.semicolon();
return this.finishNode(node, "TypeAlias");

9
packages/babylon/test/fixtures/flow/type-alias/4/actual.js vendored Normal file
View File

@ -0,0 +1,9 @@
type union =
| {type: "A"}
| {type: "B"}
;
type overloads =
& ((x: string) => number)
& ((x: number) => string)
;

436
packages/babylon/test/fixtures/flow/type-alias/4/expected.json vendored Normal file
View File

@ -0,0 +1,436 @@
{
"type": "File",
"start": 0,
"end": 120,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 9,
"column": 1
}
},
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"type": "Program",
"start": 0,
"end": 120,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 9,
"column": 1
}
},
"sourceType": "module",
"body": [
{
"type": "TypeAlias",
"start": 0,
"end": 44,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 4,
"column": 1
}
},
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"loc": {
"start": {
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},
"end": {
"line": 1,
"column": 10
}
},
"name": "union"
},
"typeParameters": null,
"right": {
"type": "UnionTypeAnnotation",
"start": 16,
"end": 42,
"loc": {
"start": {
"line": 2,
"column": 3
},
"end": {
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"column": 14
}
},
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"end": 27,
"loc": {
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"column": 3
},
"end": {
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}
},
"callProperties": [],
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{
"type": "ObjectTypeProperty",
"start": 17,
"end": 26,
"loc": {
"start": {
"line": 2,
"column": 4
},
"end": {
"line": 2,
"column": 13
}
},
"key": {
"type": "Identifier",
"start": 17,
"end": 21,
"loc": {
"start": {
"line": 2,
"column": 4
},
"end": {
"line": 2,
"column": 8
}
},
"name": "type"
},
"value": {
"type": "StringLiteralTypeAnnotation",
"start": 23,
"end": 26,
"loc": {
"start": {
"line": 2,
"column": 10
},
"end": {
"line": 2,
"column": 13
}
},
"value": "A",
"extra": {
"rawValue": "A",
"raw": "\"A\""
}
},
"optional": false
}
],
"indexers": []
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{
"type": "ObjectTypeAnnotation",
"start": 31,
"end": 42,
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"name": "type"
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"loc": {
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"column": 10
},
"end": {
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}
},
"value": "B",
"extra": {
"rawValue": "B",
"raw": "\"B\""
}
},
"optional": false
}
],
"indexers": []
}
]
}
},
{
"type": "TypeAlias",
"start": 46,
"end": 120,
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"loc": {
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"line": 6,
"column": 5
},
"end": {
"line": 6,
"column": 14
}
},
"name": "overloads"
},
"typeParameters": null,
"right": {
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},
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}
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}
}