"use strict";
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exports.__esModule = true;
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var _keys = require("babel-runtime/core-js/object/keys");
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var _keys2 = _interopRequireDefault(_keys);
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var _typeof2 = require("babel-runtime/helpers/typeof");
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var _typeof3 = _interopRequireDefault(_typeof2);
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var _getIterator2 = require("babel-runtime/core-js/get-iterator");
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var _getIterator3 = _interopRequireDefault(_getIterator2);
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exports.isBinding = isBinding;
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exports.isReferenced = isReferenced;
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exports.isValidIdentifier = isValidIdentifier;
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exports.isLet = isLet;
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exports.isBlockScoped = isBlockScoped;
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exports.isVar = isVar;
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exports.isSpecifierDefault = isSpecifierDefault;
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exports.isScope = isScope;
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exports.isImmutable = isImmutable;
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exports.isNodesEquivalent = isNodesEquivalent;
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var _retrievers = require("./retrievers");
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var _esutils = require("esutils");
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var _esutils2 = _interopRequireDefault(_esutils);
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var _index = require("./index");
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var t = _interopRequireWildcard(_index);
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var _constants = require("./constants");
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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)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function isBinding(node, parent) {
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var keys = _retrievers.getBindingIdentifiers.keys[parent.type];
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if (keys) {
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for (var i = 0; i < keys.length; i++) {
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var key = keys[i];
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var val = parent[key];
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if (Array.isArray(val)) {
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if (val.indexOf(node) >= 0) return true;
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} else {
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if (val === node) return true;
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}
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}
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}
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return false;
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}
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function isReferenced(node, parent) {
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switch (parent.type) {
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case "BindExpression":
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return parent.object === node || parent.callee === node;
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case "MemberExpression":
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case "JSXMemberExpression":
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if (parent.property === node && parent.computed) {
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return true;
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} else if (parent.object === node) {
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return true;
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} else {
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return false;
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}
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case "MetaProperty":
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return false;
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case "ObjectProperty":
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if (parent.key === node) {
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return parent.computed;
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}
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case "VariableDeclarator":
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return parent.id !== node;
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case "ArrowFunctionExpression":
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case "FunctionDeclaration":
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case "FunctionExpression":
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for (var _iterator = parent.params, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) {
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var _ref;
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if (_isArray) {
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if (_i >= _iterator.length) break;
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_ref = _iterator[_i++];
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} else {
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_i = _iterator.next();
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if (_i.done) break;
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_ref = _i.value;
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}
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var param = _ref;
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if (param === node) return false;
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}
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return parent.id !== node;
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case "ExportSpecifier":
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if (parent.source) {
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return false;
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} else {
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return parent.local === node;
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}
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case "ExportNamespaceSpecifier":
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case "ExportDefaultSpecifier":
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return false;
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case "JSXAttribute":
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return parent.name !== node;
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case "ClassProperty":
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if (parent.key === node) {
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return parent.computed;
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} else {
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return parent.value === node;
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}
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case "ImportDefaultSpecifier":
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case "ImportNamespaceSpecifier":
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case "ImportSpecifier":
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return false;
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case "ClassDeclaration":
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case "ClassExpression":
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return parent.id !== node;
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case "ClassMethod":
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case "ObjectMethod":
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return parent.key === node && parent.computed;
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case "LabeledStatement":
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return false;
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case "CatchClause":
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return parent.param !== node;
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case "RestElement":
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return false;
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case "AssignmentExpression":
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return parent.right === node;
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case "AssignmentPattern":
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return parent.right === node;
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case "ObjectPattern":
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case "ArrayPattern":
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return false;
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}
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return true;
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}
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function isValidIdentifier(name) {
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if (typeof name !== "string" || _esutils2.default.keyword.isReservedWordES6(name, true)) {
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return false;
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} else if (name === "await") {
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return false;
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} else {
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return _esutils2.default.keyword.isIdentifierNameES6(name);
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}
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}
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function isLet(node) {
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return t.isVariableDeclaration(node) && (node.kind !== "var" || node[_constants.BLOCK_SCOPED_SYMBOL]);
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}
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function isBlockScoped(node) {
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return t.isFunctionDeclaration(node) || t.isClassDeclaration(node) || t.isLet(node);
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}
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function isVar(node) {
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return t.isVariableDeclaration(node, { kind: "var" }) && !node[_constants.BLOCK_SCOPED_SYMBOL];
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}
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function isSpecifierDefault(specifier) {
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return t.isImportDefaultSpecifier(specifier) || t.isIdentifier(specifier.imported || specifier.exported, { name: "default" });
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}
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function isScope(node, parent) {
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if (t.isBlockStatement(node) && t.isFunction(parent, { body: node })) {
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return false;
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}
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return t.isScopable(node);
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}
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function isImmutable(node) {
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if (t.isType(node.type, "Immutable")) return true;
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if (t.isIdentifier(node)) {
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if (node.name === "undefined") {
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return true;
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} else {
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return false;
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}
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}
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return false;
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}
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function isNodesEquivalent(a, b) {
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if ((typeof a === "undefined" ? "undefined" : (0, _typeof3.default)(a)) !== "object" || (typeof a === "undefined" ? "undefined" : (0, _typeof3.default)(a)) !== "object" || a == null || b == null) {
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return a === b;
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}
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if (a.type !== b.type) {
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return false;
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}
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var fields = (0, _keys2.default)(t.NODE_FIELDS[a.type] || a.type);
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for (var _iterator2 = fields, _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : (0, _getIterator3.default)(_iterator2);;) {
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var _ref2;
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if (_isArray2) {
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if (_i2 >= _iterator2.length) break;
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_ref2 = _iterator2[_i2++];
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} else {
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_i2 = _iterator2.next();
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if (_i2.done) break;
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_ref2 = _i2.value;
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}
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var field = _ref2;
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if ((0, _typeof3.default)(a[field]) !== (0, _typeof3.default)(b[field])) {
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return false;
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}
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if (Array.isArray(a[field])) {
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if (!Array.isArray(b[field])) {
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return false;
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}
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if (a[field].length !== b[field].length) {
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return false;
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}
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for (var i = 0; i < a[field].length; i++) {
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if (!isNodesEquivalent(a[field][i], b[field][i])) {
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return false;
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}
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}
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continue;
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}
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if (!isNodesEquivalent(a[field], b[field])) {
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return false;
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}
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}
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return true;
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}
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