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Diffstat (limited to 'node_modules/@babel/traverse/lib/context.js')
| -rw-r--r-- | node_modules/@babel/traverse/lib/context.js | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/node_modules/@babel/traverse/lib/context.js b/node_modules/@babel/traverse/lib/context.js new file mode 100644 index 00000000..1ba35ddc --- /dev/null +++ b/node_modules/@babel/traverse/lib/context.js @@ -0,0 +1,188 @@ +"use strict"; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.default = void 0; + +var _path = _interopRequireDefault(require("./path")); + +function t() { + const data = _interopRequireWildcard(require("@babel/types")); + + t = function t() { + return data; + }; + + return data; +} + +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)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; 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 (var _iterator = keys, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) { + var _ref; + + if (_isArray) { + if (_i >= _iterator.length) break; + _ref = _iterator[_i++]; + } else { + _i = _iterator.next(); + if (_i.done) break; + _ref = _i.value; + } + + const key = _ref; + 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 (var _iterator2 = queue, _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : _iterator2[Symbol.iterator]();;) { + var _ref2; + + if (_isArray2) { + if (_i2 >= _iterator2.length) break; + _ref2 = _iterator2[_i2++]; + } else { + _i2 = _iterator2.next(); + if (_i2.done) break; + _ref2 = _i2.value; + } + + const path = _ref2; + 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 (var _iterator3 = queue, _isArray3 = Array.isArray(_iterator3), _i3 = 0, _iterator3 = _isArray3 ? _iterator3 : _iterator3[Symbol.iterator]();;) { + var _ref3; + + if (_isArray3) { + if (_i3 >= _iterator3.length) break; + _ref3 = _iterator3[_i3++]; + } else { + _i3 = _iterator3.next(); + if (_i3.done) break; + _ref3 = _i3.value; + } + + const path = _ref3; + 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;
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