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7298a38552
sourceRevisionAtLastExport: 33f2fb0e53d135f0ee17cfccd9d993eb2a6f47de targetRevisionAtLastExport: 31340cbd9add103f586d501b0c3354b7b182abc0
286 lines
9.7 KiB
JavaScript
286 lines
9.7 KiB
JavaScript
// Copyright 2014 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// ES6 extends the \uxxxx escape and also allows \u{xxxxx}.
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function testRegexpHelper(r) {
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assertTrue(r.test("foo"));
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assertTrue(r.test("boo"));
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assertFalse(r.test("moo"));
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}
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(function TestUnicodeEscapes() {
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testRegexpHelper(/(\u0066|\u0062)oo/);
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testRegexpHelper(/(\u0066|\u0062)oo/u);
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testRegexpHelper(/(\u{0066}|\u{0062})oo/u);
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testRegexpHelper(/(\u{66}|\u{000062})oo/u);
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// Note that we need \\ inside a string, otherwise it's interpreted as a
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// unicode escape inside a string.
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testRegexpHelper(new RegExp("(\\u0066|\\u0062)oo"));
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testRegexpHelper(new RegExp("(\\u0066|\\u0062)oo", "u"));
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testRegexpHelper(new RegExp("(\\u{0066}|\\u{0062})oo", "u"));
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testRegexpHelper(new RegExp("(\\u{66}|\\u{000062})oo", "u"));
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// Though, unicode escapes via strings should work too.
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testRegexpHelper(new RegExp("(\u0066|\u0062)oo"));
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testRegexpHelper(new RegExp("(\u0066|\u0062)oo", "u"));
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testRegexpHelper(new RegExp("(\u{0066}|\u{0062})oo", "u"));
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testRegexpHelper(new RegExp("(\u{66}|\u{000062})oo", "u"));
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})();
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(function TestUnicodeEscapesInCharacterClasses() {
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testRegexpHelper(/[\u0062-\u0066]oo/);
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testRegexpHelper(/[\u0062-\u0066]oo/u);
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testRegexpHelper(/[\u{0062}-\u{0066}]oo/u);
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testRegexpHelper(/[\u{62}-\u{00000066}]oo/u);
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// Note that we need \\ inside a string, otherwise it's interpreted as a
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// unicode escape inside a string.
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testRegexpHelper(new RegExp("[\\u0062-\\u0066]oo"));
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testRegexpHelper(new RegExp("[\\u0062-\\u0066]oo", "u"));
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testRegexpHelper(new RegExp("[\\u{0062}-\\u{0066}]oo", "u"));
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testRegexpHelper(new RegExp("[\\u{62}-\\u{00000066}]oo", "u"));
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// Though, unicode escapes via strings should work too.
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testRegexpHelper(new RegExp("[\u0062-\u0066]oo"));
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testRegexpHelper(new RegExp("[\u0062-\u0066]oo", "u"));
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testRegexpHelper(new RegExp("[\u{0062}-\u{0066}]oo", "u"));
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testRegexpHelper(new RegExp("[\u{62}-\u{00000066}]oo", "u"));
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})();
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(function TestBraceEscapesWithoutUnicodeFlag() {
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// \u followed by illegal escape will be parsed as u. {x} will be the
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// character count.
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function helper1(r) {
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assertFalse(r.test("fbar"));
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assertFalse(r.test("fubar"));
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assertTrue(r.test("fuubar"));
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assertFalse(r.test("fuuubar"));
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}
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helper1(/f\u{2}bar/);
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helper1(new RegExp("f\\u{2}bar"));
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function helper2(r) {
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assertFalse(r.test("fbar"));
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assertTrue(r.test("fubar"));
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assertTrue(r.test("fuubar"));
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assertFalse(r.test("fuuubar"));
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}
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helper2(/f\u{1,2}bar/);
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helper2(new RegExp("f\\u{1,2}bar"));
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function helper3(r) {
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assertTrue(r.test("u"));
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assertTrue(r.test("{"));
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assertTrue(r.test("2"));
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assertTrue(r.test("}"));
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assertFalse(r.test("q"));
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assertFalse(r.test("("));
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assertFalse(r.test(")"));
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}
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helper3(/[\u{2}]/);
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helper3(new RegExp("[\\u{2}]"));
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})();
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(function TestInvalidEscapes() {
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// Without the u flag, invalid unicode escapes and other invalid escapes are
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// treated as identity escapes.
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function helper1(r) {
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assertTrue(r.test("firstuxz89second"));
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}
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helper1(/first\u\x\z\8\9second/);
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helper1(new RegExp("first\\u\\x\\z\\8\\9second"));
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function helper2(r) {
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assertTrue(r.test("u"));
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assertTrue(r.test("x"));
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assertTrue(r.test("z"));
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assertTrue(r.test("8"));
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assertTrue(r.test("9"));
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assertFalse(r.test("q"));
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assertFalse(r.test("7"));
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}
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helper2(/[\u\x\z\8\9]/);
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helper2(new RegExp("[\\u\\x\\z\\8\\9]"));
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// However, with the u flag, these are treated as invalid escapes.
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assertThrows("/\\u/u", SyntaxError);
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assertThrows("/\\u12/u", SyntaxError);
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assertThrows("/\\ufoo/u", SyntaxError);
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assertThrows("/\\x/u", SyntaxError);
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assertThrows("/\\xfoo/u", SyntaxError);
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assertThrows("/\\z/u", SyntaxError);
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assertThrows("/\\8/u", SyntaxError);
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assertThrows("/\\9/u", SyntaxError);
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assertThrows("new RegExp('\\\\u', 'u')", SyntaxError);
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assertThrows("new RegExp('\\\\u12', 'u')", SyntaxError);
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assertThrows("new RegExp('\\\\ufoo', 'u')", SyntaxError);
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assertThrows("new RegExp('\\\\x', 'u')", SyntaxError);
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assertThrows("new RegExp('\\\\xfoo', 'u')", SyntaxError);
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assertThrows("new RegExp('\\\\z', 'u')", SyntaxError);
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assertThrows("new RegExp('\\\\8', 'u')", SyntaxError);
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assertThrows("new RegExp('\\\\9', 'u')", SyntaxError);
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})();
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(function TestTooBigHexEscape() {
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// The hex number inside \u{} has a maximum value.
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/\u{10ffff}/u
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new RegExp("\\u{10ffff}", "u")
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assertThrows("/\\u{110000}/u", SyntaxError);
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assertThrows("new RegExp('\\\\u{110000}', 'u')", SyntaxError);
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// Without the u flag, they're of course fine ({x} is the count).
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/\u{110000}/
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new RegExp("\\u{110000}")
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})();
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(function TestSyntaxEscapes() {
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// Syntax escapes work the same with or without the u flag.
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function helper(r) {
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assertTrue(r.test("foo[bar"));
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assertFalse(r.test("foo]bar"));
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}
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helper(/foo\[bar/);
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helper(new RegExp("foo\\[bar"));
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helper(/foo\[bar/u);
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helper(new RegExp("foo\\[bar", "u"));
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})();
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(function TestUnicodeSurrogates() {
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// U+10E6D corresponds to the surrogate pair [U+D803, U+DE6D].
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function helper(r) {
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assertTrue(r.test("foo\u{10e6d}bar"));
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}
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helper(/foo\ud803\ude6dbar/u);
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helper(new RegExp("foo\\ud803\\ude6dbar", "u"));
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})();
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(function AllFlags() {
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// Test that we can pass all possible regexp flags and they work properly.
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function helper1(r) {
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assertTrue(r.global);
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assertTrue(r.ignoreCase);
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assertTrue(r.multiline);
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assertTrue(r.sticky);
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assertTrue(r.unicode);
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}
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helper1(/foo/gimyu);
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helper1(new RegExp("foo", "gimyu"));
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function helper2(r) {
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assertFalse(r.global);
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assertFalse(r.ignoreCase);
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assertFalse(r.multiline);
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assertFalse(r.sticky);
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assertFalse(r.unicode);
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}
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helper2(/foo/);
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helper2(new RegExp("foo"));
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})();
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(function DuplicatedFlags() {
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// Test that duplicating the u flag is not allowed.
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assertThrows("/foo/ugu");
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assertThrows("new RegExp('foo', 'ugu')");
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})();
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(function ToString() {
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// Test that the u flag is included in the string representation of regexps.
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function helper(r) {
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assertEquals(r.toString(), "/foo/u");
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}
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helper(/foo/u);
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helper(new RegExp("foo", "u"));
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})();
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// Non-BMP patterns.
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// Single character atom.
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assertTrue(new RegExp("\u{12345}", "u").test("\u{12345}"));
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assertTrue(/\u{12345}/u.test("\u{12345}"));
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assertTrue(new RegExp("\u{12345}", "u").test("\ud808\udf45"));
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assertTrue(/\u{12345}/u.test("\ud808\udf45"));
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assertFalse(new RegExp("\u{12345}", "u").test("\udf45"));
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assertFalse(/\u{12345}/u.test("\udf45"));
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// Multi-character atom.
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assertTrue(new RegExp("\u{12345}\u{23456}", "u").test("a\u{12345}\u{23456}b"));
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assertTrue(/\u{12345}\u{23456}/u.test("b\u{12345}\u{23456}c"));
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assertFalse(new RegExp("\u{12345}\u{23456}", "u").test("a\udf45\u{23456}b"));
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assertFalse(/\u{12345}\u{23456}/u.test("b\udf45\u{23456}c"));
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// Disjunction.
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assertTrue(new RegExp("\u{12345}(?:\u{23456})", "u").test(
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"a\u{12345}\u{23456}b"));
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assertTrue(/\u{12345}(?:\u{23456})/u.test("b\u{12345}\u{23456}c"));
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assertFalse(new RegExp("\u{12345}(?:\u{23456})", "u").test(
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"a\udf45\u{23456}b"));
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assertFalse(/\u{12345}(?:\u{23456})/u.test("b\udf45\u{23456}c"));
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// Alternative.
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assertTrue(new RegExp("\u{12345}|\u{23456}", "u").test("a\u{12345}b"));
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assertTrue(/\u{12345}|\u{23456}/u.test("b\u{23456}c"));
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assertFalse(new RegExp("\u{12345}|\u{23456}", "u").test("a\udf45\ud84db"));
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assertFalse(/\u{12345}|\u{23456}/u.test("b\udf45\ud808c"));
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// Capture.
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assertTrue(new RegExp("(\u{12345}|\u{23456}).\\1", "u").test(
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"\u{12345}b\u{12345}"));
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assertTrue(/(\u{12345}|\u{23456}).\1/u.test("\u{12345}b\u{12345}"));
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assertFalse(new RegExp("(\u{12345}|\u{23456}).\\1", "u").test(
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"\u{12345}b\u{23456}"));
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assertFalse(/(\u{12345}|\u{23456}).\1/u.test("\u{12345}b\u{23456}"));
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// Quantifier.
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assertTrue(new RegExp("\u{12345}{3}", "u").test("\u{12345}\u{12345}\u{12345}"));
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assertTrue(/\u{12345}{3}/u.test("\u{12345}\u{12345}\u{12345}"));
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assertTrue(new RegExp("\u{12345}{3}").test("\u{12345}\udf45\udf45"));
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assertFalse(/\ud808\udf45{3}/u.test("\u{12345}\udf45\udf45"));
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assertTrue(/\ud808\udf45{3}/u.test("\u{12345}\u{12345}\u{12345}"));
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assertFalse(new RegExp("\u{12345}{3}", "u").test("\u{12345}\udf45\udf45"));
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assertFalse(/\u{12345}{3}/u.test("\u{12345}\udf45\udf45"));
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// Literal surrogates.
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assertEquals(["\u{10000}\u{10000}"],
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new RegExp("\ud800\udc00+", "u").exec("\u{10000}\u{10000}"));
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assertEquals(["\u{10000}\u{10000}"],
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new RegExp("\\ud800\\udc00+", "u").exec("\u{10000}\u{10000}"));
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assertEquals(["\u{10003}\u{50001}"],
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new RegExp("[\\ud800\\udc03-\\ud900\\udc01\]+", "u").exec(
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"\u{10003}\u{50001}"));
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assertEquals(["\u{10003}\u{50001}"],
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new RegExp("[\ud800\udc03-\u{50001}\]+", "u").exec(
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"\u{10003}\u{50001}"));
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// Unicode escape sequences to represent a non-BMP character cannot have
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// mixed notation, and must follow the rules for RegExpUnicodeEscapeSequence.
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assertThrows(() => new RegExp("[\\ud800\udc03-\ud900\\udc01\]+", "u"));
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assertThrows(() => new RegExp("[\\ud800\udc03-\ud900\\udc01\]+", "u"));
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assertNull(new RegExp("\\ud800\udc00+", "u").exec("\u{10000}\u{10000}"));
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assertNull(new RegExp("\ud800\\udc00+", "u").exec("\u{10000}\u{10000}"));
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assertNull(new RegExp("[\\ud800\udc00]", "u").exec("\u{10000}"));
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assertNull(new RegExp("[\\{ud800}\udc00]", "u").exec("\u{10000}"));
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assertNull(new RegExp("[\ud800\\udc00]", "u").exec("\u{10000}"));
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assertNull(new RegExp("[\ud800\\{udc00}]", "u").exec("\u{10000}"));
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assertNull(/\u{d800}\u{dc00}+/u.exec("\ud800\udc00\udc00"));
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assertNull(/\ud800\u{dc00}+/u.exec("\ud800\udc00\udc00"));
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assertNull(/\u{d800}\udc00+/u.exec("\ud800\udc00\udc00"));
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