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setup-python/node_modules/@babel/traverse/lib/path/context.js

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2019-06-27 01:12:00 +00:00
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.call = call;
exports._call = _call;
exports.isBlacklisted = isBlacklisted;
exports.visit = visit;
exports.skip = skip;
exports.skipKey = skipKey;
exports.stop = stop;
exports.setScope = setScope;
exports.setContext = setContext;
exports.resync = resync;
exports._resyncParent = _resyncParent;
exports._resyncKey = _resyncKey;
exports._resyncList = _resyncList;
exports._resyncRemoved = _resyncRemoved;
exports.popContext = popContext;
exports.pushContext = pushContext;
exports.setup = setup;
exports.setKey = setKey;
exports.requeue = requeue;
exports._getQueueContexts = _getQueueContexts;
var _index = _interopRequireDefault(require("../index"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function call(key) {
const opts = this.opts;
this.debug(key);
if (this.node) {
if (this._call(opts[key])) return true;
}
if (this.node) {
return this._call(opts[this.node.type] && opts[this.node.type][key]);
}
return false;
}
function _call(fns) {
if (!fns) return false;
for (const fn of fns) {
if (!fn) continue;
const node = this.node;
if (!node) return true;
const ret = fn.call(this.state, this, this.state);
if (ret && typeof ret === "object" && typeof ret.then === "function") {
throw new Error(`You appear to be using a plugin with an async traversal visitor, ` + `which your current version of Babel does not support. ` + `If you're using a published plugin, you may need to upgrade ` + `your @babel/core version.`);
}
if (ret) {
throw new Error(`Unexpected return value from visitor method ${fn}`);
}
if (this.node !== node) return true;
if (this.shouldStop || this.shouldSkip || this.removed) return true;
}
return false;
}
function isBlacklisted() {
const blacklist = this.opts.blacklist;
return blacklist && blacklist.indexOf(this.node.type) > -1;
}
function visit() {
if (!this.node) {
return false;
}
if (this.isBlacklisted()) {
return false;
}
if (this.opts.shouldSkip && this.opts.shouldSkip(this)) {
return false;
}
if (this.call("enter") || this.shouldSkip) {
this.debug("Skip...");
return this.shouldStop;
}
this.debug("Recursing into...");
_index.default.node(this.node, this.opts, this.scope, this.state, this, this.skipKeys);
this.call("exit");
return this.shouldStop;
}
function skip() {
this.shouldSkip = true;
}
function skipKey(key) {
this.skipKeys[key] = true;
}
function stop() {
this.shouldStop = true;
this.shouldSkip = true;
}
function setScope() {
if (this.opts && this.opts.noScope) return;
let path = this.parentPath;
let target;
while (path && !target) {
if (path.opts && path.opts.noScope) return;
target = path.scope;
path = path.parentPath;
}
this.scope = this.getScope(target);
if (this.scope) this.scope.init();
}
function setContext(context) {
this.shouldSkip = false;
this.shouldStop = false;
this.removed = false;
this.skipKeys = {};
if (context) {
this.context = context;
this.state = context.state;
this.opts = context.opts;
}
this.setScope();
return this;
}
function resync() {
if (this.removed) return;
this._resyncParent();
this._resyncList();
this._resyncKey();
}
function _resyncParent() {
if (this.parentPath) {
this.parent = this.parentPath.node;
}
}
function _resyncKey() {
if (!this.container) return;
if (this.node === this.container[this.key]) return;
if (Array.isArray(this.container)) {
for (let i = 0; i < this.container.length; i++) {
if (this.container[i] === this.node) {
return this.setKey(i);
}
}
} else {
for (const key of Object.keys(this.container)) {
if (this.container[key] === this.node) {
return this.setKey(key);
}
}
}
this.key = null;
}
function _resyncList() {
if (!this.parent || !this.inList) return;
const newContainer = this.parent[this.listKey];
if (this.container === newContainer) return;
this.container = newContainer || null;
}
function _resyncRemoved() {
if (this.key == null || !this.container || this.container[this.key] !== this.node) {
this._markRemoved();
}
}
function popContext() {
this.contexts.pop();
if (this.contexts.length > 0) {
this.setContext(this.contexts[this.contexts.length - 1]);
} else {
this.setContext(undefined);
}
}
function pushContext(context) {
this.contexts.push(context);
this.setContext(context);
}
function setup(parentPath, container, listKey, key) {
this.inList = !!listKey;
this.listKey = listKey;
this.parentKey = listKey || key;
this.container = container;
this.parentPath = parentPath || this.parentPath;
this.setKey(key);
}
function setKey(key) {
this.key = key;
this.node = this.container[this.key];
this.type = this.node && this.node.type;
}
function requeue(pathToQueue = this) {
if (pathToQueue.removed) return;
const contexts = this.contexts;
for (const context of contexts) {
context.maybeQueue(pathToQueue);
}
}
function _getQueueContexts() {
let path = this;
let contexts = this.contexts;
while (!contexts.length) {
path = path.parentPath;
if (!path) break;
contexts = path.contexts;
}
return contexts;
}