mirror of
https://github.com/jerryscript-project/jerryscript.git
synced 2025-12-15 16:29:21 +00:00
531f1e9687
This code adds a lot of checks and complexity to the code. JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
111 lines
2.0 KiB
JavaScript
111 lines
2.0 KiB
JavaScript
// Copyright JS Foundation and other contributors, http://js.foundation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/* Declaring let */
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/* Note: l\u0065t is let */
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function check_syntax_error (code) {
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try {
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eval(code)
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assert (false)
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} catch (e) {
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assert (e instanceof SyntaxError)
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}
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}
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function check_strict_syntax_error (code) {
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"use strict"
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try {
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eval(code)
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assert (false)
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} catch (e) {
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assert (e instanceof SyntaxError)
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}
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}
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check_syntax_error("let let = 5")
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check_syntax_error("const [let] = [1]")
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check_syntax_error("const l\u0065t = 6")
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check_syntax_error("let [l\u0065t] = [2]")
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check_syntax_error("l\\u0065t a")
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check_strict_syntax_error("var let = 5")
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check_strict_syntax_error("function let() {}")
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check_strict_syntax_error("for (let in []) ;")
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check_strict_syntax_error("l\\u0065t;")
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var let = 1
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assert(let === 1)
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var [let] = [2]
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assert(let === 2)
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var x = 0;
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let = [ () => x = 1 ]
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l\u0065t[0]()
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assert(x === 1)
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function f1()
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{
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var a = 0
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function let(l\u0065t) {
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a = let
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}
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let(3)
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assert(a === 3)
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}
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f1()
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function f2()
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{
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var let = [1]
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/* First: destructuring pattern definition */
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let
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[a] = [2]
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assert(a === 2)
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a = 0
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/* Second: property access */
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l\u0065t
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[a] = [3]
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assert(let[0][0] === 3)
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}
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f2()
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var arr = []
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for (let in ["x","y"])
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arr.push(let)
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assert(arr[0] === "0")
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assert(arr[1] === "1")
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/* Let and arrow */
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for (let => 4; false ; ) ;
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let => 5
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/* Let label */
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let: break let
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