| "use strict"; |
| |
| Object.defineProperty(exports, "__esModule", { |
| value: true |
| }); |
| exports.default = void 0; |
| |
| var _path = _interopRequireDefault(require("./path")); |
| |
| var t = _interopRequireWildcard(require("@babel/types")); |
| |
| function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; } |
| |
| function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; if (obj != null) { var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; } |
| |
| function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } |
| |
| const testing = process.env.NODE_ENV === "test"; |
| |
| class TraversalContext { |
| constructor(scope, opts, state, parentPath) { |
| this.queue = null; |
| this.parentPath = parentPath; |
| this.scope = scope; |
| this.state = state; |
| this.opts = opts; |
| } |
| |
| shouldVisit(node) { |
| const opts = this.opts; |
| if (opts.enter || opts.exit) return true; |
| if (opts[node.type]) return true; |
| const keys = t.VISITOR_KEYS[node.type]; |
| if (!keys || !keys.length) return false; |
| |
| for (const key of keys) { |
| if (node[key]) return true; |
| } |
| |
| return false; |
| } |
| |
| create(node, obj, key, listKey) { |
| return _path.default.get({ |
| parentPath: this.parentPath, |
| parent: node, |
| container: obj, |
| key: key, |
| listKey |
| }); |
| } |
| |
| maybeQueue(path, notPriority) { |
| if (this.trap) { |
| throw new Error("Infinite cycle detected"); |
| } |
| |
| if (this.queue) { |
| if (notPriority) { |
| this.queue.push(path); |
| } else { |
| this.priorityQueue.push(path); |
| } |
| } |
| } |
| |
| visitMultiple(container, parent, listKey) { |
| if (container.length === 0) return false; |
| const queue = []; |
| |
| for (let key = 0; key < container.length; key++) { |
| const node = container[key]; |
| |
| if (node && this.shouldVisit(node)) { |
| queue.push(this.create(parent, container, key, listKey)); |
| } |
| } |
| |
| return this.visitQueue(queue); |
| } |
| |
| visitSingle(node, key) { |
| if (this.shouldVisit(node[key])) { |
| return this.visitQueue([this.create(node, node, key)]); |
| } else { |
| return false; |
| } |
| } |
| |
| visitQueue(queue) { |
| this.queue = queue; |
| this.priorityQueue = []; |
| const visited = []; |
| let stop = false; |
| |
| for (const path of queue) { |
| path.resync(); |
| |
| if (path.contexts.length === 0 || path.contexts[path.contexts.length - 1] !== this) { |
| path.pushContext(this); |
| } |
| |
| if (path.key === null) continue; |
| |
| if (testing && queue.length >= 10000) { |
| this.trap = true; |
| } |
| |
| if (visited.indexOf(path.node) >= 0) continue; |
| visited.push(path.node); |
| |
| if (path.visit()) { |
| stop = true; |
| break; |
| } |
| |
| if (this.priorityQueue.length) { |
| stop = this.visitQueue(this.priorityQueue); |
| this.priorityQueue = []; |
| this.queue = queue; |
| if (stop) break; |
| } |
| } |
| |
| for (const path of queue) { |
| path.popContext(); |
| } |
| |
| this.queue = null; |
| return stop; |
| } |
| |
| visit(node, key) { |
| const nodes = node[key]; |
| if (!nodes) return false; |
| |
| if (Array.isArray(nodes)) { |
| return this.visitMultiple(nodes, node, key); |
| } else { |
| return this.visitSingle(node, key); |
| } |
| } |
| |
| } |
| |
| exports.default = TraversalContext; |