1/* Copyright JS Foundation and other contributors, http://js.foundation 2 * 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16/* This file checks yield syntax errors. */ 17 18function check_syntax_error(str) 19{ 20 try { 21 eval(str); 22 assert(false); 23 } catch (e) { 24 assert(e instanceof SyntaxError); 25 } 26} 27 28function * gen() 29{ 30 yield , yield 31 32 yield 33 , yield 34 35 (yield 36 ) 37 38 yield[ 39 1] 40} 41 42function*gen2() 43{ 44 1 ? 45 yield 46 : 47 yield 48} 49 50var gen3 = function*(){ 51 (yield)/[yield] 52} 53 54check_syntax_error("function *gen(){ yield % yield }"); 55check_syntax_error("function *gen(){ (yield) % yield }"); 56check_syntax_error("function *gen(){ yield % (yield) }"); 57check_syntax_error("function *gen(){ (yield\n1) }"); 58check_syntax_error("function *gen(){ function yield() {} }"); 59check_syntax_error("function *gen(){ (yield)=>1 }"); 60check_syntax_error("function *gen(){ yield => 1 }"); 61check_syntax_error("function *gen(){ yi\\u0065ld 1 }"); 62 63function *gen4() { 64 var f = function yield(i) { 65 if (i = 0) 66 return yield(i + 1) 67 68 return 39 69 } 70 71 return f(0) 72} 73 74assert(gen4().next().value === 39); 75 76(function *() { 77 () => yield 78 yield 1; 79}) 80 81function *gen5() { 82 var o = { 83 ["f"]() { yield % yield } 84 } 85 yield 1; 86} 87