js/src/tests/ecma/extensions/11.6.1-3.js@6474c204b198 (annotated)
js/src/tests/ecma/extensions/11.6.1-3.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | |
| michael@0 | 7 | /** |
| michael@0 | 8 | File Name: 11.6.1-3.js |
| michael@0 | 9 | ECMA Section: 11.6.1 The addition operator ( + ) |
| michael@0 | 10 | Description: |
| michael@0 | 11 | |
| michael@0 | 12 | The addition operator either performs string concatenation or numeric |
| michael@0 | 13 | addition. |
| michael@0 | 14 | |
| michael@0 | 15 | The production AdditiveExpression : AdditiveExpression + MultiplicativeExpression |
| michael@0 | 16 | is evaluated as follows: |
| michael@0 | 17 | |
| michael@0 | 18 | 1. Evaluate AdditiveExpression. |
| michael@0 | 19 | 2. Call GetValue(Result(1)). |
| michael@0 | 20 | 3. Evaluate MultiplicativeExpression. |
| michael@0 | 21 | 4. Call GetValue(Result(3)). |
| michael@0 | 22 | 5. Call ToPrimitive(Result(2)). |
| michael@0 | 23 | 6. Call ToPrimitive(Result(4)). |
| michael@0 | 24 | 7. If Type(Result(5)) is String or Type(Result(6)) is String, go to step 12. |
| michael@0 | 25 | (Note that this step differs from step 3 in the algorithm for comparison |
| michael@0 | 26 | for the relational operators in using or instead of and.) |
| michael@0 | 27 | 8. Call ToNumber(Result(5)). |
| michael@0 | 28 | 9. Call ToNumber(Result(6)). |
| michael@0 | 29 | 10. Apply the addition operation to Result(8) and Result(9). See the discussion below (11.6.3). |
| michael@0 | 30 | 11. Return Result(10). |
| michael@0 | 31 | 12. Call ToString(Result(5)). |
| michael@0 | 32 | 13. Call ToString(Result(6)). |
| michael@0 | 33 | 14. Concatenate Result(12) followed by Result(13). |
| michael@0 | 34 | 15. Return Result(14). |
| michael@0 | 35 | |
| michael@0 | 36 | Note that no hint is provided in the calls to ToPrimitive in steps 5 and 6. |
| michael@0 | 37 | All native ECMAScript objects except Date objects handle the absence of a |
| michael@0 | 38 | hint as if the hint Number were given; Date objects handle the absence of a |
| michael@0 | 39 | hint as if the hint String were given. Host objects may handle the absence |
| michael@0 | 40 | of a hint in some other manner. |
| michael@0 | 41 | |
| michael@0 | 42 | This test does only covers cases where the Additive or Mulplicative expression |
| michael@0 | 43 | is a Date. |
| michael@0 | 44 | |
| michael@0 | 45 | Author: christine@netscape.com |
| michael@0 | 46 | Date: 12 november 1997 |
| michael@0 | 47 | */ |
| michael@0 | 48 | var SECTION = "11.6.1-3"; |
| michael@0 | 49 | var VERSION = "ECMA_1"; |
| michael@0 | 50 | startTest(); |
| michael@0 | 51 | |
| michael@0 | 52 | writeHeaderToLog( SECTION + " The Addition operator ( + )"); |
| michael@0 | 53 | |
| michael@0 | 54 | // tests for a boolean primitive and a boolean object, and |
| michael@0 | 55 | // "MyValuelessObject", where the value is set in the object's |
| michael@0 | 56 | // prototype, not the object itself. |
| michael@0 | 57 | |
| michael@0 | 58 | var DATE1 = new Date(); |
| michael@0 | 59 | |
| michael@0 | 60 | var MYOB1 = new MyObject( DATE1 ); |
| michael@0 | 61 | var MYOB2 = new MyValuelessObject( DATE1 ); |
| michael@0 | 62 | var MYOB3 = new MyProtolessObject( DATE1 ); |
| michael@0 | 63 | var MYOB4 = new MyProtoValuelessObject( DATE1 ); |
| michael@0 | 64 | |
| michael@0 | 65 | new TestCase( SECTION, |
| michael@0 | 66 | "MYOB2 = new MyValuelessObject(DATE1); MYOB3 + 'string'", |
| michael@0 | 67 | DATE1.toString() + "string", |
| michael@0 | 68 | MYOB2 + 'string' ); |
| michael@0 | 69 | |
| michael@0 | 70 | new TestCase( SECTION, |
| michael@0 | 71 | "MYOB2 = new MyValuelessObject(DATE1); MYOB3 + new String('string')", |
| michael@0 | 72 | DATE1.toString() + "string", |
| michael@0 | 73 | MYOB2 + new String('string') ); |
| michael@0 | 74 | /* |
| michael@0 | 75 | new TestCase( SECTION, |
| michael@0 | 76 | "MYOB3 = new MyProtolessObject(DATE1); MYOB3 + new Boolean(true)", |
| michael@0 | 77 | DATE1.toString() + "true", |
| michael@0 | 78 | MYOB3 + new Boolean(true) ); |
| michael@0 | 79 | */ |
| michael@0 | 80 | |
| michael@0 | 81 | test(); |
| michael@0 | 82 | |
| michael@0 | 83 | function MyProtoValuelessObject() { |
| michael@0 | 84 | this.valueOf = new Function ( "" ); |
| michael@0 | 85 | this.__proto__ = null; |
| michael@0 | 86 | } |
| michael@0 | 87 | function MyProtolessObject( value ) { |
| michael@0 | 88 | this.valueOf = new Function( "return this.value" ); |
| michael@0 | 89 | this.__proto__ = null; |
| michael@0 | 90 | this.value = value; |
| michael@0 | 91 | } |
| michael@0 | 92 | function MyValuelessObject(value) { |
| michael@0 | 93 | this.__proto__ = new MyPrototypeObject(value); |
| michael@0 | 94 | } |
| michael@0 | 95 | function MyPrototypeObject(value) { |
| michael@0 | 96 | this.valueOf = new Function( "return this.value;" ); |
| michael@0 | 97 | this.toString = new Function( "return (this.value + '');" ); |
| michael@0 | 98 | this.value = value; |
| michael@0 | 99 | } |
| michael@0 | 100 | function MyObject( value ) { |
| michael@0 | 101 | this.valueOf = new Function( "return this.value" ); |
| michael@0 | 102 | this.value = value; |
| michael@0 | 103 | } |
