| /* -*- tab-width: 2; indent-tabs-mode: nil; js-indent-level: 2 -*- */ |
| /* This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| |
| |
| /** |
| File Name: 15.5.4.8-2.js |
| ECMA Section: 15.5.4.8 String.prototype.split( separator ) |
| Description: |
| |
| Returns an Array object into which substrings of the result of converting |
| this object to a string have been stored. The substrings are determined by |
| searching from left to right for occurrences of the given separator; these |
| occurrences are not part of any substring in the returned array, but serve |
| to divide up this string value. The separator may be a string of any length. |
| |
| As a special case, if the separator is the empty string, the string is split |
| up into individual characters; the length of the result array equals the |
| length of the string, and each substring contains one character. |
| |
| If the separator is not supplied, then the result array contains just one |
| string, which is the string. |
| |
| When the split method is called with one argument separator, the following steps are taken: |
| |
| 1. Call ToString, giving it the this value as its argument. |
| 2. Create a new Array object of length 0 and call it A. |
| 3. If separator is not supplied, call the [[Put]] method of A with 0 and |
| Result(1) as arguments, and then return A. |
| 4. Call ToString(separator). |
| 5. Compute the number of characters in Result(1). |
| 6. Compute the number of characters in the string that is Result(4). |
| 7. Let p be 0. |
| 8. If Result(6) is zero (the separator string is empty), go to step 17. |
| 9. Compute the smallest possible integer k not smaller than p such that |
| k+Result(6) is not greater than Result(5), and for all nonnegative |
| integers j less than Result(6), the character at position k+j of |
| Result(1) is the same as the character at position j of Result(2); |
| but if there is no such integer k, then go to step 14. |
| 10. Compute a string value equal to the substring of Result(1), consisting |
| of the characters at positions p through k1, inclusive. |
| 11. Call the [[Put]] method of A with A.length and Result(10) as arguments. |
| 12. Let p be k+Result(6). |
| 13. Go to step 9. |
| 14. Compute a string value equal to the substring of Result(1), consisting |
| of the characters from position p to the end of Result(1). |
| 15. Call the [[Put]] method of A with A.length and Result(14) as arguments. |
| 16. Return A. |
| 17. If p equals Result(5), return A. |
| 18. Compute a string value equal to the substring of Result(1), consisting of |
| the single character at position p. |
| 19. Call the [[Put]] method of A with A.length and Result(18) as arguments. |
| 20. Increase p by 1. |
| 21. Go to step 17. |
| |
| Note that the split function is intentionally generic; it does not require that its this value be a String |
| object. Therefore it can be transferred to other kinds of objects for use as a method. |
| |
| Author: christine@netscape.com |
| Date: 12 november 1997 |
| */ |
| |
| var SECTION = "15.5.4.8-2"; |
| var VERSION = "ECMA_1"; |
| startTest(); |
| var TITLE = "String.prototype.split"; |
| |
| writeHeaderToLog( SECTION + " "+ TITLE); |
| |
| // case where separator is the empty string. |
| |
| var TEST_STRING = "this is a string object"; |
| |
| new TestCase( SECTION, |
| "var s = new String( "+ TEST_STRING +" ); s.split('').length", |
| TEST_STRING.length, |
| eval("var s = new String( TEST_STRING ); s.split('').length") ); |
| |
| for ( var i = 0; i < TEST_STRING.length; i++ ) { |
| |
| new TestCase( SECTION, |
| "var s = new String( "+TEST_STRING+" ); s.split('')["+i+"]", |
| TEST_STRING.charAt(i), |
| eval("var s = new String( TEST_STRING ); s.split('')["+i+"]") ); |
| } |
| |
| // case where the value of the separator is undefined. in this case, |
| // the this value is returned. |
| |
| var TEST_STRING = "thisundefinedisundefinedaundefinedstringundefinedobject"; |
| var EXPECT_STRING = new Array( TEST_STRING ); |
| |
| new TestCase( SECTION, |
| "var s = new String( "+ TEST_STRING +" ); s.split(void 0).length", |
| EXPECT_STRING.length, |
| eval("var s = new String( TEST_STRING ); s.split(void 0).length") ); |
| |
| for ( var i = 0; i < EXPECT_STRING.length; i++ ) { |
| new TestCase( SECTION, |
| "var s = new String( "+TEST_STRING+" ); s.split(void 0)["+i+"]", |
| EXPECT_STRING[i], |
| eval("var s = new String( TEST_STRING ); s.split(void 0)["+i+"]") ); |
| } |
| |
| // case where the value of the separator is null. in this case the value of the separator is "null". |
| TEST_STRING = "thisnullisnullanullstringnullobject"; |
| var EXPECT_STRING = new Array( "this", "is", "a", "string", "object" ); |
| |
| new TestCase( SECTION, |
| "var s = new String( "+ TEST_STRING +" ); s.split(null).length", |
| EXPECT_STRING.length, |
| eval("var s = new String( TEST_STRING ); s.split(null).length") ); |
| |
| for ( var i = 0; i < EXPECT_STRING.length; i++ ) { |
| new TestCase( SECTION, |
| "var s = new String( "+TEST_STRING+" ); s.split(null)["+i+"]", |
| EXPECT_STRING[i], |
| eval("var s = new String( TEST_STRING ); s.split(null)["+i+"]") ); |
| } |
| |
| // case where the value of the separator is a boolean. |
| TEST_STRING = "thistrueistrueatruestringtrueobject"; |
| var EXPECT_STRING = new Array( "this", "is", "a", "string", "object" ); |
| |
| new TestCase( SECTION, |
| "var s = new String( "+ TEST_STRING +" ); s.split(true).length", |
| EXPECT_STRING.length, |
| eval("var s = new String( TEST_STRING ); s.split(true).length") ); |
| |
| for ( var i = 0; i < EXPECT_STRING.length; i++ ) { |
| new TestCase( SECTION, |
| "var s = new String( "+TEST_STRING+" ); s.split(true)["+i+"]", |
| EXPECT_STRING[i], |
| eval("var s = new String( TEST_STRING ); s.split(true)["+i+"]") ); |
| } |
| |
| // case where the value of the separator is a number |
| TEST_STRING = "this123is123a123string123object"; |
| var EXPECT_STRING = new Array( "this", "is", "a", "string", "object" ); |
| |
| new TestCase( SECTION, |
| "var s = new String( "+ TEST_STRING +" ); s.split(123).length", |
| EXPECT_STRING.length, |
| eval("var s = new String( TEST_STRING ); s.split(123).length") ); |
| |
| for ( var i = 0; i < EXPECT_STRING.length; i++ ) { |
| new TestCase( SECTION, |
| "var s = new String( "+TEST_STRING+" ); s.split(123)["+i+"]", |
| EXPECT_STRING[i], |
| eval("var s = new String( TEST_STRING ); s.split(123)["+i+"]") ); |
| } |
| |
| |
| // case where the value of the separator is a number |
| TEST_STRING = "this123is123a123string123object"; |
| var EXPECT_STRING = new Array( "this", "is", "a", "string", "object" ); |
| |
| new TestCase( SECTION, |
| "var s = new String( "+ TEST_STRING +" ); s.split(123).length", |
| EXPECT_STRING.length, |
| eval("var s = new String( TEST_STRING ); s.split(123).length") ); |
| |
| for ( var i = 0; i < EXPECT_STRING.length; i++ ) { |
| new TestCase( SECTION, |
| "var s = new String( "+TEST_STRING+" ); s.split(123)["+i+"]", |
| EXPECT_STRING[i], |
| eval("var s = new String( TEST_STRING ); s.split(123)["+i+"]") ); |
| } |
| |
| // case where the separator is not in the string |
| TEST_STRING = "this is a string"; |
| EXPECT_STRING = new Array( "this is a string" ); |
| |
| new TestCase( SECTION, |
| "var s = new String( " + TEST_STRING + " ); s.split(':').length", |
| 1, |
| eval("var s = new String( TEST_STRING ); s.split(':').length") ); |
| |
| new TestCase( SECTION, |
| "var s = new String( " + TEST_STRING + " ); s.split(':')[0]", |
| TEST_STRING, |
| eval("var s = new String( TEST_STRING ); s.split(':')[0]") ); |
| |
| // case where part but not all of separator is in the string. |
| TEST_STRING = "this is a string"; |
| EXPECT_STRING = new Array( "this is a string" ); |
| new TestCase( SECTION, |
| "var s = new String( " + TEST_STRING + " ); s.split('strings').length", |
| 1, |
| eval("var s = new String( TEST_STRING ); s.split('strings').length") ); |
| |
| new TestCase( SECTION, |
| "var s = new String( " + TEST_STRING + " ); s.split('strings')[0]", |
| TEST_STRING, |
| eval("var s = new String( TEST_STRING ); s.split('strings')[0]") ); |
| |
| // case where the separator is at the end of the string |
| TEST_STRING = "this is a string"; |
| EXPECT_STRING = new Array( "this is a " ); |
| new TestCase( SECTION, |
| "var s = new String( " + TEST_STRING + " ); s.split('string').length", |
| 2, |
| eval("var s = new String( TEST_STRING ); s.split('string').length") ); |
| |
| for ( var i = 0; i < EXPECT_STRING.length; i++ ) { |
| new TestCase( SECTION, |
| "var s = new String( "+TEST_STRING+" ); s.split('string')["+i+"]", |
| EXPECT_STRING[i], |
| eval("var s = new String( TEST_STRING ); s.split('string')["+i+"]") ); |
| } |
| |
| test(); |