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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _path = require("./path");
var _t = require("@babel/types");
const {
VISITOR_KEYS
} = _t;
class TraversalContext {
constructor(scope, opts, state, parentPath) {
this.queue = null;
this.priorityQueue = 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 = VISITOR_KEYS[node.type];
if (!(keys != null && 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.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 = new WeakSet();
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;
const {
node
} = path;
if (visited.has(node)) continue;
if (node) visited.add(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;