93 lines
2.6 KiB
JavaScript
93 lines
2.6 KiB
JavaScript
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"use strict";
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exports.__esModule = true;
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var _getIterator2 = require("babel-runtime/core-js/get-iterator");
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var _getIterator3 = _interopRequireDefault(_getIterator2);
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exports.default = function (classPath) {
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classPath.assertClass();
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var memoisedExpressions = [];
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function maybeMemoise(path) {
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if (!path.node || path.isPure()) return;
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var uid = classPath.scope.generateDeclaredUidIdentifier();
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memoisedExpressions.push(t.assignmentExpression("=", uid, path.node));
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path.replaceWith(uid);
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}
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function memoiseDecorators(paths) {
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if (!Array.isArray(paths) || !paths.length) return;
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paths = paths.reverse();
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(0, _babelHelperBindifyDecorators2.default)(paths);
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for (var _iterator = paths, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) {
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var _ref;
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if (_isArray) {
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if (_i >= _iterator.length) break;
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_ref = _iterator[_i++];
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} else {
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_i = _iterator.next();
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if (_i.done) break;
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_ref = _i.value;
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}
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var path = _ref;
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maybeMemoise(path);
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}
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}
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maybeMemoise(classPath.get("superClass"));
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memoiseDecorators(classPath.get("decorators"), true);
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var methods = classPath.get("body.body");
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for (var _iterator2 = methods, _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : (0, _getIterator3.default)(_iterator2);;) {
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var _ref2;
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if (_isArray2) {
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if (_i2 >= _iterator2.length) break;
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_ref2 = _iterator2[_i2++];
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} else {
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_i2 = _iterator2.next();
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if (_i2.done) break;
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_ref2 = _i2.value;
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}
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var methodPath = _ref2;
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if (methodPath.is("computed")) {
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maybeMemoise(methodPath.get("key"));
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}
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if (methodPath.has("decorators")) {
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memoiseDecorators(classPath.get("decorators"));
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}
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}
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if (memoisedExpressions) {
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classPath.insertBefore(memoisedExpressions.map(function (expr) {
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return t.expressionStatement(expr);
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}));
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}
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};
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var _babelHelperBindifyDecorators = require("babel-helper-bindify-decorators");
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var _babelHelperBindifyDecorators2 = _interopRequireDefault(_babelHelperBindifyDecorators);
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var _babelTypes = require("babel-types");
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var t = _interopRequireWildcard(_babelTypes);
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function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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module.exports = exports["default"];
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