mirror of
https://github.com/swc-project/swc.git
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806a6d97da
swc_ecma_transforms: - implement regenerator pass - add regenerator pass to es2015 preset swc_ecma_preset_env: - add regenerator
968 lines
16 KiB
Rust
968 lines
16 KiB
Rust
#![feature(box_syntax)]
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#![feature(test)]
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#![feature(box_patterns)]
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#![feature(specialization)]
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use swc_common::chain;
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use swc_ecma_parser::Syntax;
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use swc_ecma_transforms::{
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compat::es2015::regenerator, modules::common_js::common_js, pass::Pass, resolver,
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};
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#[macro_use]
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mod common;
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fn syntax() -> Syntax {
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Syntax::default()
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}
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fn tr(_: ()) -> impl Pass {
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chain!(resolver(), regenerator())
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}
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// computed_properties_example
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test!(
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syntax(),
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|_| tr(Default::default()),
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computed_properties_example,
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r#"
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var o = {
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*foo() {
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return "foo";
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}
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};
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"#,
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r#"
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var regeneratorRuntime = require('@babel/runtime/regenerator');
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var o = {
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foo() {
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return regeneratorRuntime.mark(function _callee() {
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return regeneratorRuntime.wrap(function _callee$(_ctx) {
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while (1) switch (_ctx.prev = _ctx.next) {
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case 0:
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return _ctx.abrupt("return", "foo");
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case 1:
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case "end":
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return _ctx.stop();
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}
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}, _callee);
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})()
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;
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}
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};
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"#
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);
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// class_argument_scope_example
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test_exec!(
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syntax(),
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|_| tr(Default::default()),
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class_argument_scope_example_exec,
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r#"
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class Test {
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*iter(arg = this) {
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yield arg;
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}
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}
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let test = new Test;
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expect(test.iter().next().value).toBe(test);
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"#
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);
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//// regression_T7041
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//test!(
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// syntax(),
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// |_| tr(Default::default()),
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// regression_t7041,
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// r#"
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//var _regeneratorRuntime = require("@babel/runtime/regenerator");
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//
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//Object.keys({});
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//
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//function * fn(){}
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//
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//"#,
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// r#"
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//var _regeneratorRuntime = require("@babel/runtime/regenerator");
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//
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//var _marked = _regeneratorRuntime.mark(fn);
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//
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//Object.keys({});
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//
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//function fn() {
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// return _regeneratorRuntime.wrap(function fn$(_ctx) {
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// while (1) {
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// switch (_ctx.prev = _ctx.next) {
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// case 0:
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// case "end":
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// return _ctx.stop();
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// }
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// }
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// }, _marked);
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//}
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//
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//"#
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//);
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// regression_6733
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test!(
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syntax(),
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|_| chain!(tr(Default::default()), common_js(Default::default())),
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regression_6733,
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r#"
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export default function * () {
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var x = yield 5;
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return 5;
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}
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"#,
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r#"
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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 regeneratorRuntime = require('@babel/runtime/regenerator');
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var _default = function _callee() {
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var x;
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return regeneratorRuntime.wrap(function _callee$(_ctx) {
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while(1)switch(_ctx.prev = _ctx.next){
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case 0:
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_ctx.next = 2;
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return 5;
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case 2:
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x = _ctx.sent;
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void 0;
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return _ctx.abrupt('return', 5);
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case 5:
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case 'end': return _ctx.stop();
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}
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}, _callee);
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};
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exports.default = _default;
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"#
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);
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test!(
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syntax(),
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|_| tr(Default::default()),
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empty_fn_decl_1,
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"function* foo(a,b,c){}
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",
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r#"
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var regeneratorRuntime = require('@babel/runtime/regenerator');
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var _marked = regeneratorRuntime.mark(foo);
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function foo(a, b, c) {
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return regeneratorRuntime.wrap(function foo$(_ctx) {
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while (1)
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switch (_ctx.prev = _ctx.next) {
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case 0:
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case "end":
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return _ctx.stop();
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}
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}, _marked);
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}
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"#
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);
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test_exec!(
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syntax(),
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|_| tr(Default::default()),
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conditional_return_1,
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"
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let v = (function* (){
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yield 3;
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if (true)
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return 1
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})();
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expect(v.next()).toEqual({ value: 3, done: false });
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expect(v.next()).toEqual({ value: 1, done: true });
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"
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);
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test_exec!(
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syntax(),
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|_| tr(Default::default()),
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conditional_return_2,
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"
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let v = (function* (){
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if (false)
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return a
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yield 1
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})();
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expect(v.next()).toEqual({ value: 1, done: false });
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expect(v.next()).toEqual({ done: true });
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"
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);
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test_exec!(
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syntax(),
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|_| tr(Default::default()),
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conditional_return_exec_1,
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"
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let v = (function* (){
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yield 3;
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if (true)
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return 2;
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yield 1
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})();
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expect(v.next()).toEqual({ done: false, value: 3 });
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expect(v.next()).toEqual({ done: true, value: 2 });
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"
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);
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test_exec!(
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syntax(),
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|_| tr(Default::default()),
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conditional_return_exec_2,
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"
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let v = (function* (){
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yield 3;
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if (false)
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return 2;
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yield 1
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})();
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expect(v.next()).toEqual({ done: false, value: 3 });
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expect(v.next()).toEqual({ done: false, value: 1 });
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expect(v.next()).toEqual({ done: true, value: undefined });
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"
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);
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test_exec!(
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syntax(),
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|_| tr(Default::default()),
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conditional_yield_1,
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"
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let v = (function* () {
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if (true)
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yield 1
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})();
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expect(v.next()).toEqual({ done: false, value: 1 });
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expect(v.next()).toEqual({ done: true });
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"
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);
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test_exec!(
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syntax(),
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|_| tr(Default::default()),
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conditional_yield_2,
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"
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let v = (function* () {
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if (true)
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yield 1
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if (false)
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yield 2
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yield 3
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})();
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expect(v.next()).toEqual({ done: false, value: 1 });
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expect(v.next()).toEqual({ done: false, value: 3 });
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expect(v.next()).toEqual({ done: true, value: undefined });
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"
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);
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test_exec!(
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syntax(),
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|_| tr(Default::default()),
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yield_in_seq,
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"
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let v = (function* () {
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return (1, yield 2, yield 3, 4, yield 5);
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})();
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expect(v.next()).toEqual({ done: false, value: 2 });
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expect(v.next()).toEqual({ done: false, value: 3 });
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expect(v.next()).toEqual({ done: false, value: 5 });
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expect(v.next()).toEqual({ done: true });
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"
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);
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test_exec!(
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syntax(),
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|_| tr(Default::default()),
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yield_in_cond_seq,
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"
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let v = (function* () {
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if (true)
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return (1, yield 2, yield 3, 4, yield 5);
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})();
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expect(v.next()).toEqual({ done: false, value: 2 });
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expect(v.next()).toEqual({ done: false, value: 3 });
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expect(v.next()).toEqual({ done: false, value: 5 });
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expect(v.next()).toEqual({ done: true });
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"
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);
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test_exec!(
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syntax(),
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|_| tr(Default::default()),
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yield_in_return_and_call,
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"
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function id(v) { return v; }
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let v = (function* () {
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if (true)
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return (1, id(yield id(2)));
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})();
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expect(v.next()).toEqual({ done: false, value: 2 });
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expect(v.next()).toEqual({ done: true });
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"
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);
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test_exec!(
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syntax(),
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|_| tr(Default::default()),
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yield_in_call,
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"
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function id(v) { return v; }
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let v = (function* () {
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return (1, id(yield id(2)));
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return (3, id(yield id(4)));
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})();
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expect(v.next()).toEqual({ done: false, value: 2 });
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expect(v.next()).toEqual({ done: true });
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"
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);
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test_exec!(
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ignore,
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syntax(),
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|_| tr(Default::default()),
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yield_temp,
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"
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function id(v) { return v; }
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let v = (function* () {
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yield (1, id(yield id(2), 2));
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return (3, id(yield id(4)));
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})();
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expect(v.next()).toEqual({ done: false, value: 2 });
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expect(v.next()).toEqual({ done: false, value: 2 });
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expect(v.next()).toEqual({ done: true });
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"
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);
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test_exec!(
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ignore,
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syntax(),
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|_| tr(Default::default()),
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yield_next_value,
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"
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let v = (function* () {
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let bar = yield 'foo';
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yield bar
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})();
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expect(v.next('bar')).toEqual({value: 'foo', done: false})
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expect(v.next()).toEqual({value: 'bar', done: false})
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expect(v.next()).toEqual({done: true})
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"
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);
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test_exec!(
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syntax(),
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|_| tr(Default::default()),
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only_yield,
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"
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let v = (function* () {
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yield 1
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})();
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expect(v.next()).toEqual({ done: false, value: 1 });
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expect(v.next()).toEqual({ done: true });
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"
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);
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test_exec!(
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syntax(),
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|_| tr(Default::default()),
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expr_cond,
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"
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let v = (function* (){
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true ? yield 1 : yield 2;
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})();
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expect(v.next()).toEqual({ value: 1, done: false });
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expect(v.next()).toEqual({ done: true });
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"
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);
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test_exec!(
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syntax(),
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|_| tr(Default::default()),
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expr_array,
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"
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let v = (function* (){
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yield [yield 1, 2];
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})();
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expect(v.next()).toEqual({ value: 1, done: false });
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expect(v.next()).toEqual({ value: [undefined, 2], done: false });
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expect(v.next()).toEqual({ done: true });
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"
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);
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test_exec!(
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syntax(),
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|_| tr(Default::default()),
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expr_object,
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"
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let v = (function* (){
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yield { a: 1 };
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})();
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expect(v.next()).toEqual({ value: { a: 1 }, done: false });
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expect(v.next()).toEqual({ done: true });
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"
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);
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test_exec!(
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syntax(),
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|_| tr(Default::default()),
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expr_logical_and,
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"
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let v = (function* (){
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(yield 1) && (yield 2);
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})();
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expect(v.next()).toEqual({ value: 1, done: false });
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expect(v.next()).toEqual({ done: true });
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"
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);
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test_exec!(
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syntax(),
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|_| tr(Default::default()),
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expr_logical_or,
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"
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let v = (function* (){
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(yield 1) || (yield 2);
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})();
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expect(v.next()).toEqual({ value: 1, done: false });
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expect(v.next()).toEqual({ value: 2, done: false });
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expect(v.next()).toEqual({ done: true });
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"
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);
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test_exec!(
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syntax(),
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|_| tr(Default::default()),
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expr_update_prefix,
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|
"
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let v = (function* (){
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let i = 0;
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yield ++i;
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yield i;
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})();
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expect(v.next()).toEqual({ value: 1, done: false });
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expect(v.next()).toEqual({ value: 1, done: false });
|
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expect(v.next()).toEqual({ done: true });
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"
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);
|
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|
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test_exec!(
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syntax(),
|
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|_| tr(Default::default()),
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expr_update_postfix,
|
|
"
|
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let v = (function* (){
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let i = 0;
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yield i++;
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yield i;
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})();
|
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|
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expect(v.next()).toEqual({ value: 0, done: false });
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expect(v.next()).toEqual({ value: 1, done: false });
|
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expect(v.next()).toEqual({ done: true });
|
|
"
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);
|
|
|
|
test_exec!(
|
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syntax(),
|
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|_| tr(Default::default()),
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bin_expr_1,
|
|
"
|
|
|
|
let v = (function* (){
|
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yield ((yield 1) + (yield 2));
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})();
|
|
|
|
expect(v.next()).toEqual({ value: 1, done: false });
|
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expect(v.next()).toEqual({ value: 2, done: false });
|
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expect(v.next()).toEqual({ value: NaN, done: false });
|
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expect(v.next()).toEqual({ done: true });
|
|
"
|
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);
|
|
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
try_stmt_1,
|
|
"
|
|
|
|
let v = (function* (){
|
|
try {
|
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yield 1;
|
|
} catch(e){
|
|
}
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ value: 1, done: false });
|
|
expect(v.next()).toEqual({ done: true });
|
|
"
|
|
);
|
|
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
try_stmt_2,
|
|
"
|
|
|
|
let v = (function* (){
|
|
try {
|
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yield 1;
|
|
throw new Error('');
|
|
} catch(e){
|
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yield 2;
|
|
}
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ value: 1, done: false });
|
|
expect(v.next()).toEqual({ value: 2, done: false });
|
|
"
|
|
);
|
|
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
try_stmt_3,
|
|
"
|
|
|
|
let v = (function* (){
|
|
try {
|
|
yield 1;
|
|
throw new Error('');
|
|
} finally {
|
|
yield 2;
|
|
}
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ value: 1, done: false });
|
|
expect(v.next()).toEqual({ value: 2, done: false });
|
|
expect(() => v.next()).toThrow();
|
|
"
|
|
);
|
|
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
try_stmt_4,
|
|
"
|
|
|
|
let v = (function* (){
|
|
try {
|
|
yield 1;
|
|
throw new Error('');
|
|
} catch (e) {
|
|
yield 2;
|
|
} finally {
|
|
yield 3;
|
|
}
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ value: 1, done: false });
|
|
expect(v.next()).toEqual({ value: 2, done: false });
|
|
expect(v.next()).toEqual({ value: 3, done: false });
|
|
|
|
"
|
|
);
|
|
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
try_stmt_5,
|
|
"
|
|
|
|
let v = (function* (){
|
|
try {
|
|
yield 1;
|
|
} catch (e) {
|
|
}
|
|
try {
|
|
yield 2;
|
|
} catch (e) {
|
|
}
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ value: 1, done: false });
|
|
expect(v.next()).toEqual({ value: 2, done: false });
|
|
"
|
|
);
|
|
|
|
// TODO
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
labeled_stmt_1,
|
|
"
|
|
|
|
let v = (function* (){
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ done: true });
|
|
"
|
|
);
|
|
|
|
// TODO
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
break_stmt_1,
|
|
"
|
|
|
|
let v = (function* (){
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ done: true });
|
|
"
|
|
);
|
|
|
|
// TODO
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
continue_stmt_1,
|
|
"
|
|
|
|
let v = (function* (){
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ done: true });
|
|
"
|
|
);
|
|
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
switch_stmt_1,
|
|
"
|
|
|
|
let v = (function* (){
|
|
switch(1) {
|
|
case 1:
|
|
yield 1
|
|
yield 2
|
|
}
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ value: 1, done: false });
|
|
expect(v.next()).toEqual({ value: 2, done: false });
|
|
expect(v.next()).toEqual({ done: true });
|
|
"
|
|
);
|
|
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
switch_stmt_2,
|
|
"
|
|
|
|
let v = (function* (){
|
|
switch(2) {
|
|
case 1:
|
|
yield 1
|
|
yield 2
|
|
}
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ done: true });
|
|
"
|
|
);
|
|
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
switch_stmt_3,
|
|
"
|
|
|
|
let v = (function* (){
|
|
switch(2) {
|
|
default:
|
|
yield 1
|
|
yield 2
|
|
}
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ value: 1, done: false });
|
|
expect(v.next()).toEqual({ value: 2, done: false });
|
|
expect(v.next()).toEqual({ done: true });
|
|
"
|
|
);
|
|
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
switch_stmt_4,
|
|
"
|
|
|
|
let v = (function* (){
|
|
switch(1) {
|
|
case 1:
|
|
yield 1
|
|
case 2:
|
|
yield 2
|
|
}
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ value: 1, done: false });
|
|
expect(v.next()).toEqual({ value: 2, done: false });
|
|
expect(v.next()).toEqual({ done: true });
|
|
"
|
|
);
|
|
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
switch_stmt_5,
|
|
"
|
|
|
|
let v = (function* (){
|
|
switch(1) {
|
|
case 1:
|
|
yield 1;
|
|
break;
|
|
case 2:
|
|
yield 2;
|
|
break;
|
|
case 3:
|
|
yield 3;
|
|
break;
|
|
case 4:
|
|
yield 4;
|
|
break;
|
|
}
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ value: 1, done: false });
|
|
expect(v.next()).toEqual({ done: true });
|
|
"
|
|
);
|
|
|
|
// TODO
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
throw_stmt_1,
|
|
"
|
|
|
|
let v = (function* (){
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ done: true });
|
|
"
|
|
);
|
|
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
while_stmt_1,
|
|
"
|
|
|
|
let v = (function* (){
|
|
let i = 0;
|
|
while (true) {
|
|
yield i++;
|
|
}
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ value: 0, done: false });
|
|
expect(v.next()).toEqual({ value: 1, done: false });
|
|
expect(v.next()).toEqual({ value: 2, done: false });
|
|
expect(v.next()).toEqual({ value: 3, done: false });
|
|
expect(v.next()).toEqual({ value: 4, done: false });
|
|
"
|
|
);
|
|
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
do_while_stmt_1,
|
|
"
|
|
|
|
let v = (function* (){
|
|
let i = 0;
|
|
do {
|
|
yield i++;
|
|
} while(true);
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ value: 0, done: false });
|
|
expect(v.next()).toEqual({ value: 1, done: false });
|
|
expect(v.next()).toEqual({ value: 2, done: false });
|
|
expect(v.next()).toEqual({ value: 3, done: false });
|
|
expect(v.next()).toEqual({ value: 4, done: false });
|
|
"
|
|
);
|
|
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
do_while_stmt_2,
|
|
"
|
|
|
|
let v = (function* (){
|
|
do {
|
|
yield 1;
|
|
} while(false);
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ value: 1, done: false });
|
|
expect(v.next()).toEqual({ done: true });
|
|
"
|
|
);
|
|
|
|
// TODO
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
for_stmt_1,
|
|
"
|
|
|
|
let v = (function* (){
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ done: true });
|
|
"
|
|
);
|
|
|
|
// TODO
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
for_of_stmt_1,
|
|
"
|
|
|
|
let v = (function* (){
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ done: true });
|
|
"
|
|
);
|
|
|
|
// TODO
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
for_in_stmt_1,
|
|
"
|
|
|
|
let v = (function* (){
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ done: true });
|
|
"
|
|
);
|
|
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
bin_expr_2,
|
|
"
|
|
|
|
let v = (function* (){
|
|
let a = 1;
|
|
let b = 2;
|
|
yield a + b;
|
|
yield (yield a) + (yield b)
|
|
})();
|
|
|
|
expect(v.next()).toEqual({ value: 3, done: false });
|
|
expect(v.next()).toEqual({ value: 1, done: false });
|
|
expect(v.next()).toEqual({ value: 2, done: false });
|
|
expect(v.next()).toEqual({ value: NaN, done: false });
|
|
expect(v.next()).toEqual({ done: true });
|
|
"
|
|
);
|
|
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
arguments_1,
|
|
"
|
|
|
|
function* gen(){
|
|
yield Array.prototype.slice.call(arguments);
|
|
}
|
|
|
|
var v = gen(1, 2);
|
|
expect(v.next()).toEqual({ value: [1, 2], done: false });
|
|
expect(v.next()).toEqual({ done: true });
|
|
"
|
|
);
|
|
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(Default::default()),
|
|
arguments_2,
|
|
"
|
|
|
|
function* gen(){
|
|
yield arguments[0];
|
|
yield arguments[1];
|
|
}
|
|
|
|
var v = gen(1, 2);
|
|
expect(v.next()).toEqual({ value: 1, done: false });
|
|
expect(v.next()).toEqual({ value: 2, done: false });
|
|
expect(v.next()).toEqual({ done: true });
|
|
|
|
var v = gen(3, 4);
|
|
expect(v.next()).toEqual({ value: 3, done: false });
|
|
expect(v.next()).toEqual({ value: 4, done: false });
|
|
expect(v.next()).toEqual({ done: true });
|
|
"
|
|
);
|