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Merge pull request #3130 from amasad/flow-null-type

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Add support for null literal type
This commit is contained in:
Sebastian McKenzie 2015-12-04 23:01:03 +11:00
commit d2ff843dae
7 changed files with 132 additions and 3 deletions
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4
packages/babel-generator/src/generators/flow.js
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@ -20,6 +20,10 @@ export function BooleanLiteralTypeAnnotation(node: Object) {
this.push(node.value ? "true" : "false");
}
export function NullLiteralTypeAnnotation() {
this.push("null");
}
export function DeclareClass(node: Object) {
this.push("declare class ");
this._interfaceish(node);

1
packages/babel-generator/test/fixtures/flow/null-literal-types/actual.js vendored Normal file
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@ -0,0 +1 @@
var foo: null;

1
packages/babel-generator/test/fixtures/flow/null-literal-types/expected.js vendored Normal file
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@ -0,0 +1 @@
var foo: null;

9
packages/babel-types/src/definitions/flow.js
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@ -26,9 +26,12 @@ defineType("BooleanTypeAnnotation", {
defineType("BooleanLiteralTypeAnnotation", {
aliases: ["Flow"],
fields: {
// todo
}
fields: {}
});
defineType("NullLiteralTypeAnnotation", {
aliases: ["Flow"],
fields: {}
});
defineType("ClassImplements", {

5
packages/babylon/src/plugins/flow.js
View File

@ -514,6 +514,11 @@ pp.flowParsePrimaryType = function () {
this.next();
return this.finishNode(node, "NumericLiteralTypeAnnotation");
case tt._null:
node.value = this.match(tt._null);
this.next();
return this.finishNode(node, "NullLiteralTypeAnnotation");
default:
if (this.state.type.keyword === "typeof") {
return this.flowParseTypeofType();

1
packages/babylon/test/fixtures/flow/literal-types/null/actual.js vendored Normal file
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@ -0,0 +1 @@
var foo: null

114
packages/babylon/test/fixtures/flow/literal-types/null/expected.json vendored Normal file
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@ -0,0 +1,114 @@
{
"type": "File",
"start": 0,
"end": 13,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 13
}
},
"program": {
"type": "Program",
"start": 0,
"end": 13,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 13
}
},
"sourceType": "module",
"body": [
{
"type": "VariableDeclaration",
"start": 0,
"end": 13,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 13
}
},
"declarations": [
{
"type": "VariableDeclarator",
"start": 4,
"end": 13,
"loc": {
"start": {
"line": 1,
"column": 4
},
"end": {
"line": 1,
"column": 13
}
},
"id": {
"type": "Identifier",
"start": 4,
"end": 13,
"loc": {
"start": {
"line": 1,
"column": 4
},
"end": {
"line": 1,
"column": 13
}
},
"name": "foo",
"typeAnnotation": {
"type": "TypeAnnotation",
"start": 7,
"end": 13,
"loc": {
"start": {
"line": 1,
"column": 7
},
"end": {
"line": 1,
"column": 13
}
},
"typeAnnotation": {
"type": "NullLiteralTypeAnnotation",
"start": 9,
"end": 13,
"loc": {
"start": {
"line": 1,
"column": 9
},
"end": {
"line": 1,
"column": 13
}
},
"value": true
}
}
},
"init": null
}
],
"kind": "var"
}
]
}
}