Initial pass

node_modules/@babel/traverse/lib/context.js

@@ -0,0 +1,152 @@
+"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 () {
+    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 (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;