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

babel-core: Add parse method (#7291)

Browse Source
This commit is contained in:
Kai Cataldo 2018-01-30 12:38:58 -05:00 committed by Henry Zhu
parent 023550c87b
commit 22c8f6376c
7 changed files with 344 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
packages/babel-core/src/index.js
View File

@ -43,6 +43,8 @@ export { default as transformFileSync } from "./transform-file-sync";
export { default as transformFromAst } from "./transform-ast";
export { default as transformFromAstSync } from "./transform-ast-sync";
export { default as parse } from "./parse";
/**
* Recommended set of compilable extensions. Not used in @babel/core directly, but meant as
* as an easy source for tooling making use of @babel/core.

22
packages/babel-core/src/parse.js Normal file
View File

@ -0,0 +1,22 @@
// @flow
import loadConfig, { InputOptions } from "./config";
import normalizeFile from "./transformation/normalize-file";
import normalizeOptions from "./transformation/normalize-opts";
type AstRoot = BabelNodeFile | BabelNodeProgram;
export default function parse(
code: string,
opts: InputOptions,
): AstRoot | null {
const config = loadConfig(opts);
if (config === null) {
return null;
}
const file = normalizeFile(config.passes, normalizeOptions(config), code);
return file.ast;
}

0
packages/babel-core/test/fixtures/parse/.babelignore vendored Normal file
View File

3
packages/babel-core/test/fixtures/parse/.babelrc vendored Normal file
View File

@ -0,0 +1,3 @@
{
"plugins": ["@babel/syntax-decorators"]
}

6
packages/babel-core/test/fixtures/parse/input.js vendored Normal file
View File

@ -0,0 +1,6 @@
@annotation
class MyClass { }
function annotation(target) {
target.annotated = true;
}

286
packages/babel-core/test/fixtures/parse/output.json vendored Normal file
View File

@ -0,0 +1,286 @@
{
"type": "File",
"start": 0,
"end": 90,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 6,
"column": 1
}
},
"program": {
"type": "Program",
"start": 0,
"end": 90,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 6,
"column": 1
}
},
"sourceType": "module",
"body": [
{
"type": "ClassDeclaration",
"start": 0,
"end": 29,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 2,
"column": 17
}
},
"decorators": [
{
"type": "Decorator",
"start": 0,
"end": 11,
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 11
}
},
"expression": {
"type": "Identifier",
"start": 1,
"end": 11,
"loc": {
"start": {
"line": 1,
"column": 1
},
"end": {
"line": 1,
"column": 11
},
"identifierName": "annotation"
},
"name": "annotation"
}
}
],
"id": {
"type": "Identifier",
"start": 18,
"end": 25,
"loc": {
"start": {
"line": 2,
"column": 6
},
"end": {
"line": 2,
"column": 13
},
"identifierName": "MyClass"
},
"name": "MyClass"
},
"superClass": null,
"body": {
"type": "ClassBody",
"start": 26,
"end": 29,
"loc": {
"start": {
"line": 2,
"column": 14
},
"end": {
"line": 2,
"column": 17
}
},
"body": []
}
},
{
"type": "FunctionDeclaration",
"start": 31,
"end": 90,
"loc": {
"start": {
"line": 4,
"column": 0
},
"end": {
"line": 6,
"column": 1
}
},
"id": {
"type": "Identifier",
"start": 40,
"end": 50,
"loc": {
"start": {
"line": 4,
"column": 9
},
"end": {
"line": 4,
"column": 19
},
"identifierName": "annotation"
},
"name": "annotation"
},
"generator": false,
"async": false,
"params": [
{
"type": "Identifier",
"start": 51,
"end": 57,
"loc": {
"start": {
"line": 4,
"column": 20
},
"end": {
"line": 4,
"column": 26
},
"identifierName": "target"
},
"name": "target"
}
],
"body": {
"type": "BlockStatement",
"start": 59,
"end": 90,
"loc": {
"start": {
"line": 4,
"column": 28
},
"end": {
"line": 6,
"column": 1
}
},
"body": [
{
"type": "ExpressionStatement",
"start": 64,
"end": 88,
"loc": {
"start": {
"line": 5,
"column": 3
},
"end": {
"line": 5,
"column": 27
}
},
"expression": {
"type": "AssignmentExpression",
"start": 64,
"end": 87,
"loc": {
"start": {
"line": 5,
"column": 3
},
"end": {
"line": 5,
"column": 26
}
},
"operator": "=",
"left": {
"type": "MemberExpression",
"start": 64,
"end": 80,
"loc": {
"start": {
"line": 5,
"column": 3
},
"end": {
"line": 5,
"column": 19
}
},
"object": {
"type": "Identifier",
"start": 64,
"end": 70,
"loc": {
"start": {
"line": 5,
"column": 3
},
"end": {
"line": 5,
"column": 9
},
"identifierName": "target"
},
"name": "target"
},
"property": {
"type": "Identifier",
"start": 71,
"end": 80,
"loc": {
"start": {
"line": 5,
"column": 10
},
"end": {
"line": 5,
"column": 19
},
"identifierName": "annotated"
},
"name": "annotated"
},
"computed": false
},
"right": {
"type": "BooleanLiteral",
"start": 83,
"end": 87,
"loc": {
"start": {
"line": 5,
"column": 22
},
"end": {
"line": 5,
"column": 26
}
},
"value": true
}
}
}
],
"directives": []
}
}
],
"directives": []
},
"comments": []
}

25
packages/babel-core/test/parse.js Normal file
View File

@ -0,0 +1,25 @@
import assert from "assert";
import fs from "fs";
import path from "path";
import { parse } from "../lib";
function fixture(...args) {
return path.join(__dirname, "fixtures", "parse", ...args);
}
describe("parse", function() {
it("should parse using configuration from .babelrc when a filename is provided", function() {
const input = fs.readFileSync(fixture("input.js"), "utf8");
const output = fs.readFileSync(fixture("output.json"), "utf8");
assert(
parse(input, { filename: fixture("input.js"), cwd: fixture() }),
output,
);
});
it("should parse using passed in configuration", function() {
const input = fs.readFileSync(fixture("input.js"), "utf8");
const output = fs.readFileSync(fixture("output.json"), "utf8");
assert(parse(input, { parserOpts: { plugins: ["decorators"] } }), output);
});
});