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176 lines
5.0 KiB
176 lines
5.0 KiB
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = _default;
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var _helperGetFunctionArity = _interopRequireDefault(require("@babel/helper-get-function-arity"));
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var _template = _interopRequireDefault(require("@babel/template"));
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var t = _interopRequireWildcard(require("@babel/types"));
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function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
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function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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const buildPropertyMethodAssignmentWrapper = (0, _template.default)(`
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(function (FUNCTION_KEY) {
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function FUNCTION_ID() {
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return FUNCTION_KEY.apply(this, arguments);
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}
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FUNCTION_ID.toString = function () {
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return FUNCTION_KEY.toString();
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}
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return FUNCTION_ID;
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})(FUNCTION)
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`);
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const buildGeneratorPropertyMethodAssignmentWrapper = (0, _template.default)(`
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(function (FUNCTION_KEY) {
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function* FUNCTION_ID() {
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return yield* FUNCTION_KEY.apply(this, arguments);
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}
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FUNCTION_ID.toString = function () {
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return FUNCTION_KEY.toString();
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};
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return FUNCTION_ID;
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})(FUNCTION)
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`);
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const visitor = {
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"ReferencedIdentifier|BindingIdentifier"(path, state) {
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if (path.node.name !== state.name) return;
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const localDeclar = path.scope.getBindingIdentifier(state.name);
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if (localDeclar !== state.outerDeclar) return;
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state.selfReference = true;
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path.stop();
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}
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};
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function getNameFromLiteralId(id) {
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if (t.isNullLiteral(id)) {
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return "null";
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}
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if (t.isRegExpLiteral(id)) {
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return `_${id.pattern}_${id.flags}`;
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}
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if (t.isTemplateLiteral(id)) {
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return id.quasis.map(quasi => quasi.value.raw).join("");
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}
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if (id.value !== undefined) {
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return id.value + "";
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}
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return "";
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}
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function wrap(state, method, id, scope) {
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if (state.selfReference) {
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if (scope.hasBinding(id.name) && !scope.hasGlobal(id.name)) {
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scope.rename(id.name);
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} else {
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if (!t.isFunction(method)) return;
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let build = buildPropertyMethodAssignmentWrapper;
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if (method.generator) {
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build = buildGeneratorPropertyMethodAssignmentWrapper;
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}
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const template = build({
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FUNCTION: method,
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FUNCTION_ID: id,
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FUNCTION_KEY: scope.generateUidIdentifier(id.name)
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}).expression;
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const params = template.callee.body.body[0].params;
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for (let i = 0, len = (0, _helperGetFunctionArity.default)(method); i < len; i++) {
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params.push(scope.generateUidIdentifier("x"));
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}
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return template;
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}
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}
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method.id = id;
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scope.getProgramParent().references[id.name] = true;
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}
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function visit(node, name, scope) {
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const state = {
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selfAssignment: false,
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selfReference: false,
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outerDeclar: scope.getBindingIdentifier(name),
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references: [],
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name: name
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};
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const binding = scope.getOwnBinding(name);
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if (binding) {
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if (binding.kind === "param") {
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state.selfReference = true;
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} else {}
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} else if (state.outerDeclar || scope.hasGlobal(name)) {
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scope.traverse(node, visitor, state);
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}
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return state;
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}
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function _default({
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node,
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parent,
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scope,
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id
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}, localBinding = false) {
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if (node.id) return;
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if ((t.isObjectProperty(parent) || t.isObjectMethod(parent, {
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kind: "method"
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})) && (!parent.computed || t.isLiteral(parent.key))) {
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id = parent.key;
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} else if (t.isVariableDeclarator(parent)) {
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id = parent.id;
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if (t.isIdentifier(id) && !localBinding) {
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const binding = scope.parent.getBinding(id.name);
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if (binding && binding.constant && scope.getBinding(id.name) === binding) {
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node.id = t.cloneNode(id);
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node.id[t.NOT_LOCAL_BINDING] = true;
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return;
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}
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}
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} else if (t.isAssignmentExpression(parent)) {
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id = parent.left;
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} else if (!id) {
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return;
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}
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let name;
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if (id && t.isLiteral(id)) {
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name = getNameFromLiteralId(id);
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} else if (id && t.isIdentifier(id)) {
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name = id.name;
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}
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if (name === undefined) {
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return;
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}
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name = t.toBindingIdentifierName(name);
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id = t.identifier(name);
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id[t.NOT_LOCAL_BINDING] = true;
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const state = visit(node, name, scope);
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return wrap(state, node, id, scope) || node;
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}
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