cst/lib/elements/types/ObjectProperty.js

JavaScript CST Implementation

'use strict';

Object.defineProperty(exports, "__esModule", {
    value: true
});

var _getPrototypeOf = require('babel-runtime/core-js/object/get-prototype-of');

var _getPrototypeOf2 = _interopRequireDefault(_getPrototypeOf);

var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck');

var _classCallCheck3 = _interopRequireDefault(_classCallCheck2);

var _createClass2 = require('babel-runtime/helpers/createClass');

var _createClass3 = _interopRequireDefault(_createClass2);

var _possibleConstructorReturn2 = require('babel-runtime/helpers/possibleConstructorReturn');

var _possibleConstructorReturn3 = _interopRequireDefault(_possibleConstructorReturn2);

var _inherits2 = require('babel-runtime/helpers/inherits');

var _inherits3 = _interopRequireDefault(_inherits2);

var _Node2 = require('../Node');

var _Node3 = _interopRequireDefault(_Node2);

var _Identifier = require('./Identifier');

var _Identifier2 = _interopRequireDefault(_Identifier);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var ObjectProperty = function (_Node) {
    (0, _inherits3.default)(ObjectProperty, _Node);

    function ObjectProperty(childNodes) {
        (0, _classCallCheck3.default)(this, ObjectProperty);
        return (0, _possibleConstructorReturn3.default)(this, (ObjectProperty.__proto__ || (0, _getPrototypeOf2.default)(ObjectProperty)).call(this, 'ObjectProperty', childNodes));
    }

    (0, _createClass3.default)(ObjectProperty, [{
        key: '_acceptChildren',
        value: function _acceptChildren(children) {
            var key = void 0;
            var value = void 0;
            var shorthand = false;
            var computed = false;

            computed = children.isToken('Punctuator', '[');

            if (children.isNode('AssignmentPattern')) {
                value = children.passNode();
                key = value.left;
            } else {
                key = readKey(children);
                if (children.isEnd && key.type === 'Identifier') {
                    shorthand = true;
                    value = key;
                } else {
                    children.skipNonCode();
                    if (children.isNode('FunctionExpression')) {
                        value = children.passNode('FunctionExpression');
                    } else {
                        children.passToken('Punctuator', ':');
                        children.skipNonCode();
                        if (children.currentElement.isPattern) {
                            value = children.passPattern();
                        } else {
                            value = children.passExpression();
                        }
                    }
                }
            }

            children.assertEnd();

            this.key = key;
            this.value = value;
            this.shorthand = shorthand;
            this.computed = computed;
        }
    }]);
    return ObjectProperty;
}(_Node3.default);

exports.default = ObjectProperty;


function readKey(children) {
    if (children.isNode('StringLiteral') || children.isNode('NumericLiteral') || children.isNode('Identifier')) {
        return children.passNode();
    } else if (children.isToken('Identifier')) {
        // This element is skipped in elementTree::buildElementTreeItem due to:
        // https://github.com/babel/babylon/issues/49
        return new _Identifier2.default([children.passToken()]);
    } else {
        children.passToken('Punctuator', '[');
        children.skipNonCode();
        var result = children.passExpression();
        children.skipNonCode();
        children.passToken('Punctuator', ']');
        return result;
    }
}
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