mirror of
https://github.com/idanoo/GoScrobble
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0.2.0 - Mid migration
This commit is contained in:
parent
139e6a915e
commit
7e38fdbd7d
42393 changed files with 5358157 additions and 62 deletions
763
web/node_modules/@babel/plugin-transform-block-scoping/lib/index.js
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vendored
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763
web/node_modules/@babel/plugin-transform-block-scoping/lib/index.js
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vendored
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@ -0,0 +1,763 @@
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"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 = void 0;
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var _helperPluginUtils = require("@babel/helper-plugin-utils");
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var _tdz = require("./tdz");
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var _core = require("@babel/core");
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const DONE = new WeakSet();
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var _default = (0, _helperPluginUtils.declare)((api, opts) => {
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api.assertVersion(7);
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const {
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throwIfClosureRequired = false,
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tdz: tdzEnabled = false
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} = opts;
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if (typeof throwIfClosureRequired !== "boolean") {
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throw new Error(`.throwIfClosureRequired must be a boolean, or undefined`);
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}
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if (typeof tdzEnabled !== "boolean") {
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throw new Error(`.tdz must be a boolean, or undefined`);
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}
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return {
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name: "transform-block-scoping",
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visitor: {
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VariableDeclaration(path) {
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const {
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node,
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parent,
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scope
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} = path;
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if (!isBlockScoped(node)) return;
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convertBlockScopedToVar(path, null, parent, scope, true);
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if (node._tdzThis) {
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const nodes = [node];
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for (let i = 0; i < node.declarations.length; i++) {
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const decl = node.declarations[i];
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const assign = _core.types.assignmentExpression("=", _core.types.cloneNode(decl.id), decl.init || scope.buildUndefinedNode());
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assign._ignoreBlockScopingTDZ = true;
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nodes.push(_core.types.expressionStatement(assign));
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decl.init = this.addHelper("temporalUndefined");
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}
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node._blockHoist = 2;
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if (path.isCompletionRecord()) {
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nodes.push(_core.types.expressionStatement(scope.buildUndefinedNode()));
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}
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path.replaceWithMultiple(nodes);
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}
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},
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Loop(path, state) {
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const {
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parent,
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scope
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} = path;
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path.ensureBlock();
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const blockScoping = new BlockScoping(path, path.get("body"), parent, scope, throwIfClosureRequired, tdzEnabled, state);
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const replace = blockScoping.run();
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if (replace) path.replaceWith(replace);
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},
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CatchClause(path, state) {
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const {
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parent,
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scope
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} = path;
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const blockScoping = new BlockScoping(null, path.get("body"), parent, scope, throwIfClosureRequired, tdzEnabled, state);
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blockScoping.run();
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},
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"BlockStatement|SwitchStatement|Program"(path, state) {
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if (!ignoreBlock(path)) {
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const blockScoping = new BlockScoping(null, path, path.parent, path.scope, throwIfClosureRequired, tdzEnabled, state);
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blockScoping.run();
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}
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}
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}
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};
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});
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exports.default = _default;
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function ignoreBlock(path) {
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return _core.types.isLoop(path.parent) || _core.types.isCatchClause(path.parent);
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}
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const buildRetCheck = (0, _core.template)(`
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if (typeof RETURN === "object") return RETURN.v;
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`);
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function isBlockScoped(node) {
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if (!_core.types.isVariableDeclaration(node)) return false;
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if (node[_core.types.BLOCK_SCOPED_SYMBOL]) return true;
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if (node.kind !== "let" && node.kind !== "const") return false;
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return true;
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}
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function isInLoop(path) {
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const loopOrFunctionParent = path.find(path => path.isLoop() || path.isFunction());
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return loopOrFunctionParent == null ? void 0 : loopOrFunctionParent.isLoop();
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}
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function convertBlockScopedToVar(path, node, parent, scope, moveBindingsToParent = false) {
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if (!node) {
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node = path.node;
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}
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if (isInLoop(path) && !_core.types.isFor(parent)) {
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for (let i = 0; i < node.declarations.length; i++) {
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const declar = node.declarations[i];
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declar.init = declar.init || scope.buildUndefinedNode();
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}
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}
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node[_core.types.BLOCK_SCOPED_SYMBOL] = true;
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node.kind = "var";
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if (moveBindingsToParent) {
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const parentScope = scope.getFunctionParent() || scope.getProgramParent();
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for (const name of Object.keys(path.getBindingIdentifiers())) {
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const binding = scope.getOwnBinding(name);
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if (binding) binding.kind = "var";
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scope.moveBindingTo(name, parentScope);
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}
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}
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}
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function isVar(node) {
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return _core.types.isVariableDeclaration(node, {
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kind: "var"
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}) && !isBlockScoped(node);
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}
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const letReferenceBlockVisitor = _core.traverse.visitors.merge([{
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Loop: {
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enter(path, state) {
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state.loopDepth++;
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},
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exit(path, state) {
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state.loopDepth--;
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}
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},
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FunctionParent(path, state) {
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if (state.loopDepth > 0) {
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path.traverse(letReferenceFunctionVisitor, state);
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} else {
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path.traverse(_tdz.visitor, state);
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}
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return path.skip();
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}
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}, _tdz.visitor]);
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const letReferenceFunctionVisitor = _core.traverse.visitors.merge([{
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ReferencedIdentifier(path, state) {
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const ref = state.letReferences.get(path.node.name);
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if (!ref) return;
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const localBinding = path.scope.getBindingIdentifier(path.node.name);
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if (localBinding && localBinding !== ref) return;
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state.closurify = true;
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}
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}, _tdz.visitor]);
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const hoistVarDeclarationsVisitor = {
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enter(path, self) {
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if (path.isForStatement()) {
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const {
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node
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} = path;
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if (isVar(node.init)) {
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const nodes = self.pushDeclar(node.init);
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if (nodes.length === 1) {
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node.init = nodes[0];
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} else {
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node.init = _core.types.sequenceExpression(nodes);
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}
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}
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} else if (path.isForInStatement() || path.isForOfStatement()) {
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const {
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node
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} = path;
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if (isVar(node.left)) {
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self.pushDeclar(node.left);
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node.left = node.left.declarations[0].id;
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}
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} else if (isVar(path.node)) {
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path.replaceWithMultiple(self.pushDeclar(path.node).map(expr => _core.types.expressionStatement(expr)));
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} else if (path.isFunction()) {
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return path.skip();
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}
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}
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};
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const loopLabelVisitor = {
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LabeledStatement({
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node
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}, state) {
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state.innerLabels.push(node.label.name);
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}
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};
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const continuationVisitor = {
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enter(path, state) {
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if (path.isAssignmentExpression() || path.isUpdateExpression()) {
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for (const name of Object.keys(path.getBindingIdentifiers())) {
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if (state.outsideReferences.get(name) !== path.scope.getBindingIdentifier(name)) {
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continue;
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}
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state.reassignments[name] = true;
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}
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} else if (path.isReturnStatement()) {
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state.returnStatements.push(path);
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}
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}
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};
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function loopNodeTo(node) {
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if (_core.types.isBreakStatement(node)) {
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return "break";
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} else if (_core.types.isContinueStatement(node)) {
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return "continue";
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}
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}
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const loopVisitor = {
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Loop(path, state) {
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const oldIgnoreLabeless = state.ignoreLabeless;
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state.ignoreLabeless = true;
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path.traverse(loopVisitor, state);
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state.ignoreLabeless = oldIgnoreLabeless;
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path.skip();
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},
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Function(path) {
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path.skip();
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},
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SwitchCase(path, state) {
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const oldInSwitchCase = state.inSwitchCase;
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state.inSwitchCase = true;
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path.traverse(loopVisitor, state);
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state.inSwitchCase = oldInSwitchCase;
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path.skip();
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},
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"BreakStatement|ContinueStatement|ReturnStatement"(path, state) {
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const {
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node,
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scope
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} = path;
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if (node[this.LOOP_IGNORE]) return;
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let replace;
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let loopText = loopNodeTo(node);
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if (loopText) {
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if (_core.types.isReturnStatement(node)) {
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throw new Error("Internal error: unexpected return statement with `loopText`");
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}
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if (node.label) {
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if (state.innerLabels.indexOf(node.label.name) >= 0) {
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return;
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}
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loopText = `${loopText}|${node.label.name}`;
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} else {
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if (state.ignoreLabeless) return;
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if (_core.types.isBreakStatement(node) && state.inSwitchCase) return;
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}
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state.hasBreakContinue = true;
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state.map[loopText] = node;
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replace = _core.types.stringLiteral(loopText);
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}
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if (_core.types.isReturnStatement(node)) {
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state.hasReturn = true;
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replace = _core.types.objectExpression([_core.types.objectProperty(_core.types.identifier("v"), node.argument || scope.buildUndefinedNode())]);
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}
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if (replace) {
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replace = _core.types.returnStatement(replace);
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replace[this.LOOP_IGNORE] = true;
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path.skip();
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path.replaceWith(_core.types.inherits(replace, node));
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}
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}
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};
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function isStrict(path) {
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return !!path.find(({
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||||
node
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}) => {
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if (_core.types.isProgram(node)) {
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if (node.sourceType === "module") return true;
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} else if (!_core.types.isBlockStatement(node)) return false;
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return node.directives.some(directive => directive.value.value === "use strict");
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});
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}
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class BlockScoping {
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constructor(loopPath, blockPath, parent, scope, throwIfClosureRequired, tdzEnabled, state) {
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this.parent = void 0;
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this.state = void 0;
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this.scope = void 0;
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this.throwIfClosureRequired = void 0;
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this.tdzEnabled = void 0;
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this.blockPath = void 0;
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this.block = void 0;
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this.outsideLetReferences = void 0;
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this.hasLetReferences = void 0;
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this.letReferences = void 0;
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this.body = void 0;
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this.loopParent = void 0;
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this.loopLabel = void 0;
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this.loopPath = void 0;
|
||||
this.loop = void 0;
|
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this.has = void 0;
|
||||
this.parent = parent;
|
||||
this.scope = scope;
|
||||
this.state = state;
|
||||
this.throwIfClosureRequired = throwIfClosureRequired;
|
||||
this.tdzEnabled = tdzEnabled;
|
||||
this.blockPath = blockPath;
|
||||
this.block = blockPath.node;
|
||||
this.outsideLetReferences = new Map();
|
||||
this.hasLetReferences = false;
|
||||
this.letReferences = new Map();
|
||||
this.body = [];
|
||||
|
||||
if (loopPath) {
|
||||
this.loopParent = loopPath.parent;
|
||||
this.loopLabel = _core.types.isLabeledStatement(this.loopParent) && this.loopParent.label;
|
||||
this.loopPath = loopPath;
|
||||
this.loop = loopPath.node;
|
||||
}
|
||||
}
|
||||
|
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run() {
|
||||
const block = this.block;
|
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if (DONE.has(block)) return;
|
||||
DONE.add(block);
|
||||
const needsClosure = this.getLetReferences();
|
||||
this.checkConstants();
|
||||
|
||||
if (_core.types.isFunction(this.parent) || _core.types.isProgram(this.block)) {
|
||||
this.updateScopeInfo();
|
||||
return;
|
||||
}
|
||||
|
||||
if (!this.hasLetReferences) return;
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||||
|
||||
if (needsClosure) {
|
||||
this.wrapClosure();
|
||||
} else {
|
||||
this.remap();
|
||||
}
|
||||
|
||||
this.updateScopeInfo(needsClosure);
|
||||
|
||||
if (this.loopLabel && !_core.types.isLabeledStatement(this.loopParent)) {
|
||||
return _core.types.labeledStatement(this.loopLabel, this.loop);
|
||||
}
|
||||
}
|
||||
|
||||
checkConstants() {
|
||||
const scope = this.scope;
|
||||
const state = this.state;
|
||||
|
||||
for (const name of Object.keys(scope.bindings)) {
|
||||
const binding = scope.bindings[name];
|
||||
if (binding.kind !== "const") continue;
|
||||
|
||||
for (const violation of binding.constantViolations) {
|
||||
const readOnlyError = state.addHelper("readOnlyError");
|
||||
|
||||
const throwNode = _core.types.callExpression(readOnlyError, [_core.types.stringLiteral(name)]);
|
||||
|
||||
if (violation.isAssignmentExpression()) {
|
||||
const {
|
||||
operator
|
||||
} = violation.node;
|
||||
|
||||
if (operator === "=") {
|
||||
violation.replaceWith(_core.types.sequenceExpression([violation.get("right").node, throwNode]));
|
||||
} else if (["&&=", "||=", "??="].includes(operator)) {
|
||||
violation.replaceWith(_core.types.logicalExpression(operator.slice(0, -1), violation.get("left").node, _core.types.sequenceExpression([violation.get("right").node, throwNode])));
|
||||
} else {
|
||||
violation.replaceWith(_core.types.sequenceExpression([_core.types.binaryExpression(operator.slice(0, -1), violation.get("left").node, violation.get("right").node), throwNode]));
|
||||
}
|
||||
} else if (violation.isUpdateExpression()) {
|
||||
violation.replaceWith(_core.types.sequenceExpression([_core.types.unaryExpression("+", violation.get("argument").node), throwNode]));
|
||||
} else if (violation.isForXStatement()) {
|
||||
violation.ensureBlock();
|
||||
violation.get("left").replaceWith(_core.types.variableDeclaration("var", [_core.types.variableDeclarator(violation.scope.generateUidIdentifier(name))]));
|
||||
violation.node.body.body.unshift(_core.types.expressionStatement(throwNode));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
updateScopeInfo(wrappedInClosure) {
|
||||
const blockScope = this.blockPath.scope;
|
||||
const parentScope = blockScope.getFunctionParent() || blockScope.getProgramParent();
|
||||
const letRefs = this.letReferences;
|
||||
|
||||
for (const key of letRefs.keys()) {
|
||||
const ref = letRefs.get(key);
|
||||
const binding = blockScope.getBinding(ref.name);
|
||||
if (!binding) continue;
|
||||
|
||||
if (binding.kind === "let" || binding.kind === "const") {
|
||||
binding.kind = "var";
|
||||
|
||||
if (wrappedInClosure) {
|
||||
if (blockScope.hasOwnBinding(ref.name)) {
|
||||
blockScope.removeBinding(ref.name);
|
||||
}
|
||||
} else {
|
||||
blockScope.moveBindingTo(ref.name, parentScope);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
remap() {
|
||||
const letRefs = this.letReferences;
|
||||
const outsideLetRefs = this.outsideLetReferences;
|
||||
const scope = this.scope;
|
||||
const blockPathScope = this.blockPath.scope;
|
||||
|
||||
for (const key of letRefs.keys()) {
|
||||
const ref = letRefs.get(key);
|
||||
|
||||
if (scope.parentHasBinding(key) || scope.hasGlobal(key)) {
|
||||
const binding = scope.getOwnBinding(key);
|
||||
|
||||
if (binding) {
|
||||
const parentBinding = scope.parent.getOwnBinding(key);
|
||||
|
||||
if (binding.kind === "hoisted" && !binding.path.node.async && !binding.path.node.generator && (!parentBinding || isVar(parentBinding.path.parent)) && !isStrict(binding.path.parentPath)) {
|
||||
continue;
|
||||
}
|
||||
|
||||
scope.rename(ref.name);
|
||||
}
|
||||
|
||||
if (blockPathScope.hasOwnBinding(key)) {
|
||||
blockPathScope.rename(ref.name);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
for (const key of outsideLetRefs.keys()) {
|
||||
const ref = letRefs.get(key);
|
||||
|
||||
if (isInLoop(this.blockPath) && blockPathScope.hasOwnBinding(key)) {
|
||||
blockPathScope.rename(ref.name);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
wrapClosure() {
|
||||
if (this.throwIfClosureRequired) {
|
||||
throw this.blockPath.buildCodeFrameError("Compiling let/const in this block would add a closure " + "(throwIfClosureRequired).");
|
||||
}
|
||||
|
||||
const block = this.block;
|
||||
const outsideRefs = this.outsideLetReferences;
|
||||
|
||||
if (this.loop) {
|
||||
for (const name of Array.from(outsideRefs.keys())) {
|
||||
const id = outsideRefs.get(name);
|
||||
|
||||
if (this.scope.hasGlobal(id.name) || this.scope.parentHasBinding(id.name)) {
|
||||
outsideRefs.delete(id.name);
|
||||
this.letReferences.delete(id.name);
|
||||
this.scope.rename(id.name);
|
||||
this.letReferences.set(id.name, id);
|
||||
outsideRefs.set(id.name, id);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
this.has = this.checkLoop();
|
||||
this.hoistVarDeclarations();
|
||||
const args = Array.from(outsideRefs.values(), node => _core.types.cloneNode(node));
|
||||
const params = args.map(id => _core.types.cloneNode(id));
|
||||
const isSwitch = this.blockPath.isSwitchStatement();
|
||||
|
||||
const fn = _core.types.functionExpression(null, params, _core.types.blockStatement(isSwitch ? [block] : block.body));
|
||||
|
||||
this.addContinuations(fn);
|
||||
|
||||
let call = _core.types.callExpression(_core.types.nullLiteral(), args);
|
||||
|
||||
let basePath = ".callee";
|
||||
|
||||
const hasYield = _core.traverse.hasType(fn.body, "YieldExpression", _core.types.FUNCTION_TYPES);
|
||||
|
||||
if (hasYield) {
|
||||
fn.generator = true;
|
||||
call = _core.types.yieldExpression(call, true);
|
||||
basePath = ".argument" + basePath;
|
||||
}
|
||||
|
||||
const hasAsync = _core.traverse.hasType(fn.body, "AwaitExpression", _core.types.FUNCTION_TYPES);
|
||||
|
||||
if (hasAsync) {
|
||||
fn.async = true;
|
||||
call = _core.types.awaitExpression(call);
|
||||
basePath = ".argument" + basePath;
|
||||
}
|
||||
|
||||
let placeholderPath;
|
||||
let index;
|
||||
|
||||
if (this.has.hasReturn || this.has.hasBreakContinue) {
|
||||
const ret = this.scope.generateUid("ret");
|
||||
this.body.push(_core.types.variableDeclaration("var", [_core.types.variableDeclarator(_core.types.identifier(ret), call)]));
|
||||
placeholderPath = "declarations.0.init" + basePath;
|
||||
index = this.body.length - 1;
|
||||
this.buildHas(ret);
|
||||
} else {
|
||||
this.body.push(_core.types.expressionStatement(call));
|
||||
placeholderPath = "expression" + basePath;
|
||||
index = this.body.length - 1;
|
||||
}
|
||||
|
||||
let callPath;
|
||||
|
||||
if (isSwitch) {
|
||||
const {
|
||||
parentPath,
|
||||
listKey,
|
||||
key
|
||||
} = this.blockPath;
|
||||
this.blockPath.replaceWithMultiple(this.body);
|
||||
callPath = parentPath.get(listKey)[key + index];
|
||||
} else {
|
||||
block.body = this.body;
|
||||
callPath = this.blockPath.get("body")[index];
|
||||
}
|
||||
|
||||
const placeholder = callPath.get(placeholderPath);
|
||||
let fnPath;
|
||||
|
||||
if (this.loop) {
|
||||
const loopId = this.scope.generateUid("loop");
|
||||
const p = this.loopPath.insertBefore(_core.types.variableDeclaration("var", [_core.types.variableDeclarator(_core.types.identifier(loopId), fn)]));
|
||||
placeholder.replaceWith(_core.types.identifier(loopId));
|
||||
fnPath = p[0].get("declarations.0.init");
|
||||
} else {
|
||||
placeholder.replaceWith(fn);
|
||||
fnPath = placeholder;
|
||||
}
|
||||
|
||||
fnPath.unwrapFunctionEnvironment();
|
||||
}
|
||||
|
||||
addContinuations(fn) {
|
||||
const state = {
|
||||
reassignments: {},
|
||||
returnStatements: [],
|
||||
outsideReferences: this.outsideLetReferences
|
||||
};
|
||||
this.scope.traverse(fn, continuationVisitor, state);
|
||||
|
||||
for (let i = 0; i < fn.params.length; i++) {
|
||||
const param = fn.params[i];
|
||||
if (!state.reassignments[param.name]) continue;
|
||||
const paramName = param.name;
|
||||
const newParamName = this.scope.generateUid(param.name);
|
||||
fn.params[i] = _core.types.identifier(newParamName);
|
||||
this.scope.rename(paramName, newParamName, fn);
|
||||
state.returnStatements.forEach(returnStatement => {
|
||||
returnStatement.insertBefore(_core.types.expressionStatement(_core.types.assignmentExpression("=", _core.types.identifier(paramName), _core.types.identifier(newParamName))));
|
||||
});
|
||||
fn.body.body.push(_core.types.expressionStatement(_core.types.assignmentExpression("=", _core.types.identifier(paramName), _core.types.identifier(newParamName))));
|
||||
}
|
||||
}
|
||||
|
||||
getLetReferences() {
|
||||
const block = this.block;
|
||||
const declarators = [];
|
||||
|
||||
if (this.loop) {
|
||||
const init = this.loop.left || this.loop.init;
|
||||
|
||||
if (isBlockScoped(init)) {
|
||||
declarators.push(init);
|
||||
|
||||
const names = _core.types.getBindingIdentifiers(init);
|
||||
|
||||
for (const name of Object.keys(names)) {
|
||||
this.outsideLetReferences.set(name, names[name]);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
const addDeclarationsFromChild = (path, node) => {
|
||||
node = node || path.node;
|
||||
|
||||
if (_core.types.isClassDeclaration(node) || _core.types.isFunctionDeclaration(node) || isBlockScoped(node)) {
|
||||
if (isBlockScoped(node)) {
|
||||
convertBlockScopedToVar(path, node, block, this.scope);
|
||||
}
|
||||
|
||||
if (node.declarations) {
|
||||
for (let i = 0; i < node.declarations.length; i++) {
|
||||
declarators.push(node.declarations[i]);
|
||||
}
|
||||
} else {
|
||||
declarators.push(node);
|
||||
}
|
||||
}
|
||||
|
||||
if (_core.types.isLabeledStatement(node)) {
|
||||
addDeclarationsFromChild(path.get("body"), node.body);
|
||||
}
|
||||
};
|
||||
|
||||
if (block.body) {
|
||||
const declarPaths = this.blockPath.get("body");
|
||||
|
||||
for (let i = 0; i < block.body.length; i++) {
|
||||
addDeclarationsFromChild(declarPaths[i]);
|
||||
}
|
||||
}
|
||||
|
||||
if (block.cases) {
|
||||
const declarPaths = this.blockPath.get("cases");
|
||||
|
||||
for (let i = 0; i < block.cases.length; i++) {
|
||||
const consequents = block.cases[i].consequent;
|
||||
|
||||
for (let j = 0; j < consequents.length; j++) {
|
||||
const declar = consequents[j];
|
||||
addDeclarationsFromChild(declarPaths[i], declar);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
for (let i = 0; i < declarators.length; i++) {
|
||||
const declar = declarators[i];
|
||||
|
||||
const keys = _core.types.getBindingIdentifiers(declar, false, true);
|
||||
|
||||
for (const key of Object.keys(keys)) {
|
||||
this.letReferences.set(key, keys[key]);
|
||||
}
|
||||
|
||||
this.hasLetReferences = true;
|
||||
}
|
||||
|
||||
if (!this.hasLetReferences) return;
|
||||
const state = {
|
||||
letReferences: this.letReferences,
|
||||
closurify: false,
|
||||
loopDepth: 0,
|
||||
tdzEnabled: this.tdzEnabled,
|
||||
addHelper: name => this.state.addHelper(name)
|
||||
};
|
||||
|
||||
if (isInLoop(this.blockPath)) {
|
||||
state.loopDepth++;
|
||||
}
|
||||
|
||||
this.blockPath.traverse(letReferenceBlockVisitor, state);
|
||||
return state.closurify;
|
||||
}
|
||||
|
||||
checkLoop() {
|
||||
const state = {
|
||||
hasBreakContinue: false,
|
||||
ignoreLabeless: false,
|
||||
inSwitchCase: false,
|
||||
innerLabels: [],
|
||||
hasReturn: false,
|
||||
isLoop: !!this.loop,
|
||||
map: {},
|
||||
LOOP_IGNORE: Symbol()
|
||||
};
|
||||
this.blockPath.traverse(loopLabelVisitor, state);
|
||||
this.blockPath.traverse(loopVisitor, state);
|
||||
return state;
|
||||
}
|
||||
|
||||
hoistVarDeclarations() {
|
||||
this.blockPath.traverse(hoistVarDeclarationsVisitor, this);
|
||||
}
|
||||
|
||||
pushDeclar(node) {
|
||||
const declars = [];
|
||||
|
||||
const names = _core.types.getBindingIdentifiers(node);
|
||||
|
||||
for (const name of Object.keys(names)) {
|
||||
declars.push(_core.types.variableDeclarator(names[name]));
|
||||
}
|
||||
|
||||
this.body.push(_core.types.variableDeclaration(node.kind, declars));
|
||||
const replace = [];
|
||||
|
||||
for (let i = 0; i < node.declarations.length; i++) {
|
||||
const declar = node.declarations[i];
|
||||
if (!declar.init) continue;
|
||||
|
||||
const expr = _core.types.assignmentExpression("=", _core.types.cloneNode(declar.id), _core.types.cloneNode(declar.init));
|
||||
|
||||
replace.push(_core.types.inherits(expr, declar));
|
||||
}
|
||||
|
||||
return replace;
|
||||
}
|
||||
|
||||
buildHas(ret) {
|
||||
const body = this.body;
|
||||
const has = this.has;
|
||||
|
||||
if (has.hasBreakContinue) {
|
||||
for (const key of Object.keys(has.map)) {
|
||||
body.push(_core.types.ifStatement(_core.types.binaryExpression("===", _core.types.identifier(ret), _core.types.stringLiteral(key)), has.map[key]));
|
||||
}
|
||||
}
|
||||
|
||||
if (has.hasReturn) {
|
||||
body.push(buildRetCheck({
|
||||
RETURN: _core.types.identifier(ret)
|
||||
}));
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
97
web/node_modules/@babel/plugin-transform-block-scoping/lib/tdz.js
generated
vendored
Normal file
97
web/node_modules/@babel/plugin-transform-block-scoping/lib/tdz.js
generated
vendored
Normal file
|
|
@ -0,0 +1,97 @@
|
|||
"use strict";
|
||||
|
||||
Object.defineProperty(exports, "__esModule", {
|
||||
value: true
|
||||
});
|
||||
exports.visitor = void 0;
|
||||
|
||||
var _core = require("@babel/core");
|
||||
|
||||
function getTDZStatus(refPath, bindingPath) {
|
||||
const executionStatus = bindingPath._guessExecutionStatusRelativeTo(refPath);
|
||||
|
||||
if (executionStatus === "before") {
|
||||
return "outside";
|
||||
} else if (executionStatus === "after") {
|
||||
return "inside";
|
||||
} else {
|
||||
return "maybe";
|
||||
}
|
||||
}
|
||||
|
||||
function buildTDZAssert(node, state) {
|
||||
return _core.types.callExpression(state.addHelper("temporalRef"), [node, _core.types.stringLiteral(node.name)]);
|
||||
}
|
||||
|
||||
function isReference(node, scope, state) {
|
||||
const declared = state.letReferences.get(node.name);
|
||||
if (!declared) return false;
|
||||
return scope.getBindingIdentifier(node.name) === declared;
|
||||
}
|
||||
|
||||
const visitedMaybeTDZNodes = new WeakSet();
|
||||
const visitor = {
|
||||
ReferencedIdentifier(path, state) {
|
||||
if (!state.tdzEnabled) return;
|
||||
const {
|
||||
node,
|
||||
parent,
|
||||
scope
|
||||
} = path;
|
||||
if (path.parentPath.isFor({
|
||||
left: node
|
||||
})) return;
|
||||
if (!isReference(node, scope, state)) return;
|
||||
const bindingPath = scope.getBinding(node.name).path;
|
||||
if (bindingPath.isFunctionDeclaration()) return;
|
||||
const status = getTDZStatus(path, bindingPath);
|
||||
if (status === "outside") return;
|
||||
|
||||
if (status === "maybe") {
|
||||
if (visitedMaybeTDZNodes.has(node)) {
|
||||
return;
|
||||
}
|
||||
|
||||
visitedMaybeTDZNodes.add(node);
|
||||
const assert = buildTDZAssert(node, state);
|
||||
bindingPath.parent._tdzThis = true;
|
||||
|
||||
if (path.parentPath.isUpdateExpression()) {
|
||||
if (parent._ignoreBlockScopingTDZ) return;
|
||||
path.parentPath.replaceWith(_core.types.sequenceExpression([assert, parent]));
|
||||
} else {
|
||||
path.replaceWith(assert);
|
||||
}
|
||||
} else if (status === "inside") {
|
||||
path.replaceWith(_core.template.ast`${state.addHelper("tdz")}("${node.name}")`);
|
||||
}
|
||||
},
|
||||
|
||||
AssignmentExpression: {
|
||||
exit(path, state) {
|
||||
if (!state.tdzEnabled) return;
|
||||
const {
|
||||
node
|
||||
} = path;
|
||||
if (node._ignoreBlockScopingTDZ) return;
|
||||
const nodes = [];
|
||||
const ids = path.getBindingIdentifiers();
|
||||
|
||||
for (const name of Object.keys(ids)) {
|
||||
const id = ids[name];
|
||||
|
||||
if (isReference(id, path.scope, state)) {
|
||||
nodes.push(id);
|
||||
}
|
||||
}
|
||||
|
||||
if (nodes.length) {
|
||||
node._ignoreBlockScopingTDZ = true;
|
||||
nodes.push(node);
|
||||
path.replaceWithMultiple(nodes.map(n => _core.types.expressionStatement(n)));
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
};
|
||||
exports.visitor = visitor;
|
||||
Loading…
Add table
Add a link
Reference in a new issue