jerryscript/tests/jerry/es2015/generator-yield.js
Zoltan Herczeg 110f75c99d Implement the core of the generator functions. (#3368)
Some things are missing:
 - yield* support
 - generator definition in object literal
 - the hidden GeneratorFunction

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
2019-11-28 11:54:27 +01:00

74 lines
1.5 KiB
JavaScript

/* Copyright JS Foundation and other contributors, http://js.foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* This file checks yield syntax errors. */
function check_syntax_error(str)
{
try {
eval(str);
assert(false);
} catch (e) {
assert(e instanceof SyntaxError);
}
}
function * gen()
{
yield , yield
yield
, yield
(yield
)
yield[
1]
}
function*gen2()
{
1 ?
yield
:
yield
}
var gen3 = function*(){
(yield)/[yield]
}
check_syntax_error("function *gen(){ yield % yield }");
check_syntax_error("function *gen(){ (yield) % yield }");
check_syntax_error("function *gen(){ yield % (yield) }");
check_syntax_error("function *gen(){ (yield\n1) }");
check_syntax_error("function *gen(){ function yield() {} }");
check_syntax_error("function *gen(){ (yield)=>1 }");
check_syntax_error("function *gen(){ yield => 1 }");
function *gen4() {
var f = function yield(i) {
if (i = 0)
return yield(i + 1)
return 39
}
return f(0)
}
assert(gen4().next().value === 39);