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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /js/src/tests/non262/Unicode/uc-005.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | js/src/tests/non262/Unicode/uc-005.js | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/js/src/tests/non262/Unicode/uc-005.js b/js/src/tests/non262/Unicode/uc-005.js new file mode 100644 index 0000000000..fe28b460fc --- /dev/null +++ b/js/src/tests/non262/Unicode/uc-005.js @@ -0,0 +1,239 @@ +/* -*- 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/. */ + +/* + * + * Date: 15 July 2002 + * SUMMARY: Testing identifiers with double-byte names + * See http://bugzilla.mozilla.org/show_bug.cgi?id=58274 + * + * Here is a sample of the problem: + * + * js> function f\u02B1 () {} + * + * js> f\u02B1.toSource(); + * function f¦() {} + * + * js> f\u02B1.toSource().toSource(); + * (new String("function f\xB1() {}")) + * + * + * See how the high-byte information (the 02) has been lost? + * The same thing was happening with the toString() method: + * + * js> f\u02B1.toString(); + * + * function f¦() { + * } + * + * js> f\u02B1.toString().toSource(); + * (new String("\nfunction f\xB1() {\n}\n")) + * + */ +//----------------------------------------------------------------------------- +var UBound = 0; +var BUGNUMBER = 58274; +var summary = 'Testing identifiers with double-byte names'; +var status = ''; +var statusitems = []; +var actual = ''; +var actualvalues = []; +var expect= ''; +var expectedvalues = []; + + +/* + * Define a function that uses double-byte identifiers in + * "every possible way" + * + * Then recover each double-byte identifier via f.toString(). + * To make this easier, put a 'Z' token before every one. + * + * Our eval string will be: + * + * sEval = "function Z\u02b1(Z\u02b2, b) { + * try { Z\u02b3 : var Z\u02b4 = Z\u02b1; } + * catch (Z\u02b5) { for (var Z\u02b6 in Z\u02b5) + * {for (1; 1<0; Z\u02b7++) {new Array()[Z\u02b6] = 1;} };} }"; + * + * It will be helpful to build this string in stages: + */ +var s0 = 'function Z'; +var s1 = '\u02b1(Z'; +var s2 = '\u02b2, b) {try { Z'; +var s3 = '\u02b3 : var Z'; +var s4 = '\u02b4 = Z'; +var s5 = '\u02b1; } catch (Z' + var s6 = '\u02b5) { for (var Z'; +var s7 = '\u02b6 in Z'; +var s8 = '\u02b5){for (1; 1<0; Z'; +var s9 = '\u02b7++) {new Array()[Z'; +var s10 = '\u02b6] = 1;} };} }'; + + +/* + * Concatenate these and eval() to create the function Z\u02b1 + */ +var sEval = s0 + s1 + s2 + s3 + s4 + s5 + s6 + s7 + s8 + s9 + s10; +eval(sEval); + + +/* + * Recover all the double-byte identifiers via Z\u02b1.toString(). + * We'll recover the 1st one as arrID[1], the 2nd one as arrID[2], + * and so on ... + */ +var arrID = getIdentifiers(Z\u02b1); + + +/* + * Now check that we got back what we put in - + */ +status = inSection(1); +actual = arrID[1]; +expect = s1.charAt(0); +addThis(); + +status = inSection(2); +actual = arrID[2]; +expect = s2.charAt(0); +addThis(); + +status = inSection(3); +actual = arrID[3]; +expect = s3.charAt(0); +addThis(); + +status = inSection(4); +actual = arrID[4]; +expect = s4.charAt(0); +addThis(); + +status = inSection(5); +actual = arrID[5]; +expect = s5.charAt(0); +addThis(); + +status = inSection(6); +actual = arrID[6]; +expect = s6.charAt(0); +addThis(); + +status = inSection(7); +actual = arrID[7]; +expect = s7.charAt(0); +addThis(); + +status = inSection(8); +actual = arrID[8]; +expect = s8.charAt(0); +addThis(); + +status = inSection(9); +actual = arrID[9]; +expect = s9.charAt(0); +addThis(); + +status = inSection(10); +actual = arrID[10]; +expect = s10.charAt(0); +addThis(); + + + + +//----------------------------------------------------------------------------- +test(); +//----------------------------------------------------------------------------- + + + +/* + * Goal: recover the double-byte identifiers from f.toString() + * by getting the very next character after each 'Z' token. + * + * The return value will be an array |arr| indexed such that + * |arr[1]| is the 1st identifier, |arr[2]| the 2nd, and so on. + * + * Note, however, f.toString() is implementation-independent. + * For example, it may begin with '\nfunction' instead of 'function'. + * + * Rhino uses a Unicode representation for f.toString(); whereas + * SpiderMonkey uses an ASCII representation, putting escape sequences + * for non-ASCII characters. For example, if a function is called f\u02B1, + * then in Rhino the toString() method will present a 2-character Unicode + * string for its name, whereas SpiderMonkey will present a 7-character + * ASCII string for its name: the string literal 'f\u02B1'. + * + * So we force the lexer to condense the string before we use it. + * This will give uniform results in Rhino and SpiderMonkey. + */ +function getIdentifiers(f) +{ + var str = condenseStr(f.toString()); + var arr = str.split('Z'); + + /* + * The identifiers are the 1st char of each split substring + * EXCEPT the first one, which is just ('\n' +) 'function '. + * + * Thus note the 1st identifier will be stored in |arr[1]|, + * the 2nd one in |arr[2]|, etc., making the indexing easy - + */ + for (i in arr) + arr[i] = arr[i].charAt(0); + return arr; +} + + +/* + * This function is the opposite of a functions like escape(), which take + * Unicode characters and return escape sequences for them. Here, we force + * the lexer to turn escape sequences back into single characters. + * + * Note we can't simply do |eval(str)|, since in practice |str| will be an + * identifier somewhere in the program (e.g. a function name); thus |eval(str)| + * would return the object that the identifier represents: not what we want. + * + * So we surround |str| lexicographically with quotes to force the lexer to + * evaluate it as a string. Have to strip out any linefeeds first, however - + */ +function condenseStr(str) +{ + /* + * You won't be able to do the next step if |str| has + * any carriage returns or linefeeds in it. For example: + * + * js> eval("'" + '\nHello' + "'"); + * 1: SyntaxError: unterminated string literal: + * 1: ' + * 1: ^ + * + * So replace them with the empty string - + */ + str = str.replace(/[\r\n]/g, '') + return eval("'" + str + "'") + } + + +function addThis() +{ + statusitems[UBound] = status; + actualvalues[UBound] = actual; + expectedvalues[UBound] = expect; + UBound++; +} + + +function test() +{ + printBugNumber(BUGNUMBER); + printStatus(summary); + + for (var i=0; i<UBound; i++) + { + reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]); + } +} |