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js/src/tests/ecma/extensions/11.6.1-1.js@6474c204b198 (annotated)

js/src/tests/ecma/extensions/11.6.1-1.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: 11.6.1-1.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 not cover cases where the Additive or Mulplicative expression
michael@0 43 ToPrimitive is string.
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 = "11.6.1-1";
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 "MyValuelessObject", where the value is
michael@0 55 // set in the object's prototype, not the object itself.
michael@0 56
michael@0 57 new TestCase( SECTION,
michael@0 58 "var EXP_1 = new MyValuelessObject(true); var EXP_2 = new MyValuelessObject(false); EXP_1 + EXP_2",
michael@0 59 1,
michael@0 60 eval("var EXP_1 = new MyValuelessObject(true); var EXP_2 = new MyValuelessObject(false); EXP_1 + EXP_2") );
michael@0 61
michael@0 62 new TestCase( SECTION,
michael@0 63 "var EXP_1 = new MyValuelessObject(new Boolean(true)); var EXP_2 = new MyValuelessObject(new Boolean(false)); EXP_1 + EXP_2",
michael@0 64 "truefalse",
michael@0 65 eval("var EXP_1 = new MyValuelessObject(new Boolean(true)); var EXP_2 = new MyValuelessObject(new Boolean(false)); EXP_1 + EXP_2") );
michael@0 66
michael@0 67 // tests for "MyValuelessObject", where the value is
michael@0 68 // set in the object's prototype, not the object itself.
michael@0 69
michael@0 70
michael@0 71 new TestCase( SECTION,
michael@0 72 "var EXP_1 = new MyValuelessObject(100); var EXP_2 = new MyValuelessObject(-1); EXP_1 + EXP_2",
michael@0 73 99,
michael@0 74 eval("var EXP_1 = new MyValuelessObject(100); var EXP_2 = new MyValuelessObject(-1); EXP_1 + EXP_2") );
michael@0 75
michael@0 76 new TestCase( SECTION,
michael@0 77 "var EXP_1 = new MyValuelessObject(new Number(100)); var EXP_2 = new MyValuelessObject(new Number(-1)); EXP_1 + EXP_2",
michael@0 78 "100-1",
michael@0 79 eval("var EXP_1 = new MyValuelessObject(new Number(100)); var EXP_2 = new MyValuelessObject(new Number(-1)); EXP_1 + EXP_2") );
michael@0 80
michael@0 81 new TestCase( SECTION,
michael@0 82 "var EXP_1 = new MyValuelessObject( new MyValuelessObject( new Boolean(true) ) ); EXP_1 + EXP_1",
michael@0 83 "truetrue",
michael@0 84 eval("var EXP_1 = new MyValuelessObject( new MyValuelessObject( new Boolean(true) ) ); EXP_1 + EXP_1") );
michael@0 85
michael@0 86 test();
michael@0 87
michael@0 88 function MyProtoValuelessObject() {
michael@0 89 this.valueOf = new Function ( "" );
michael@0 90 this.__proto__ = null;
michael@0 91 }
michael@0 92
michael@0 93 function MyProtolessObject( value ) {
michael@0 94 this.valueOf = new Function( "return this.value" );
michael@0 95 this.__proto__ = null;
michael@0 96 this.value = value;
michael@0 97 }
michael@0 98
michael@0 99 function MyValuelessObject(value) {
michael@0 100 this.__proto__ = new MyPrototypeObject(value);
michael@0 101 }
michael@0 102 function MyPrototypeObject(value) {
michael@0 103 this.valueOf = new Function( "return this.value;" );
michael@0 104 this.toString = new Function( "return (this.value + '');" );
michael@0 105 this.value = value;
michael@0 106 }
michael@0 107
michael@0 108 function MyObject( value ) {
michael@0 109 this.valueOf = new Function( "return this.value" );
michael@0 110 this.value = value;
michael@0 111 }

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