ladybird/Tests/LibRegex/Regex.cpp
Timothy Flynn 4f2cbe119b LibRegex: Allow Unicode escape sequences in capture group names
Unfortunately, this requires a slight divergence in the way the capture
group names are stored. Previously, the generated byte code would simply
store a view into the regex pattern string, so no string copying was
required.

Now, the escape sequences are decoded into a new string, and a vector
of all parsed capture group names are stored in a vector in the parser
result structure. The byte code then stores a view into the
corresponding string in that vector.
2021-08-19 23:49:25 +02:00

859 lines
34 KiB
C++
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/*
* Copyright (c) 2020, Emanuel Sprung <emanuel.sprung@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "LibRegex/RegexMatcher.h"
#include <LibTest/TestCase.h> // import first, to prevent warning of VERIFY* redefinition
#include <AK/StringBuilder.h>
#include <LibRegex/Regex.h>
#include <LibRegex/RegexDebug.h>
#include <stdio.h>
static ECMAScriptOptions match_test_api_options(const ECMAScriptOptions options)
{
return options;
}
static PosixOptions match_test_api_options(const PosixOptions options)
{
return options;
}
template<typename... Flags>
static constexpr ECMAScriptFlags combine_flags(Flags&&... flags) requires((IsSame<Flags, ECMAScriptFlags> && ...))
{
return static_cast<ECMAScriptFlags>((static_cast<regex::FlagsUnderlyingType>(flags) | ...));
}
TEST_CASE(regex_options_ecmascript)
{
ECMAScriptOptions eo;
eo |= ECMAScriptFlags::Global;
EXPECT(eo & ECMAScriptFlags::Global);
EXPECT(!(eo & ECMAScriptFlags::Insensitive));
eo = match_test_api_options(ECMAScriptFlags::Global | ECMAScriptFlags::Insensitive | ECMAScriptFlags::Sticky);
EXPECT(eo & ECMAScriptFlags::Global);
EXPECT(eo & ECMAScriptFlags::Insensitive);
EXPECT(eo & ECMAScriptFlags::Sticky);
EXPECT(!(eo & ECMAScriptFlags::Unicode));
EXPECT(!(eo & ECMAScriptFlags::Multiline));
EXPECT(!(eo & ECMAScriptFlags::SingleLine));
eo &= ECMAScriptFlags::Insensitive;
EXPECT(!(eo & ECMAScriptFlags::Global));
EXPECT(eo & ECMAScriptFlags::Insensitive);
EXPECT(!(eo & ECMAScriptFlags::Multiline));
eo &= ECMAScriptFlags::Sticky;
EXPECT(!(eo & ECMAScriptFlags::Global));
EXPECT(!(eo & ECMAScriptFlags::Insensitive));
EXPECT(!(eo & ECMAScriptFlags::Multiline));
EXPECT(!(eo & ECMAScriptFlags::Sticky));
eo = ~ECMAScriptFlags::Insensitive;
EXPECT(eo & ECMAScriptFlags::Global);
EXPECT(!(eo & ECMAScriptFlags::Insensitive));
EXPECT(eo & ECMAScriptFlags::Multiline);
EXPECT(eo & ECMAScriptFlags::Sticky);
}
TEST_CASE(regex_options_posix)
{
PosixOptions eo;
eo |= PosixFlags::Global;
EXPECT(eo & PosixFlags::Global);
EXPECT(!(eo & PosixFlags::Insensitive));
eo = match_test_api_options(PosixFlags::Global | PosixFlags::Insensitive | PosixFlags::MatchNotBeginOfLine);
EXPECT(eo & PosixFlags::Global);
EXPECT(eo & PosixFlags::Insensitive);
EXPECT(eo & PosixFlags::MatchNotBeginOfLine);
EXPECT(!(eo & PosixFlags::Unicode));
EXPECT(!(eo & PosixFlags::Multiline));
eo &= PosixFlags::Insensitive;
EXPECT(!(eo & PosixFlags::Global));
EXPECT(eo & PosixFlags::Insensitive);
EXPECT(!(eo & PosixFlags::Multiline));
eo &= PosixFlags::MatchNotBeginOfLine;
EXPECT(!(eo & PosixFlags::Global));
EXPECT(!(eo & PosixFlags::Insensitive));
EXPECT(!(eo & PosixFlags::Multiline));
eo = ~PosixFlags::Insensitive;
EXPECT(eo & PosixFlags::Global);
EXPECT(!(eo & PosixFlags::Insensitive));
EXPECT(eo & PosixFlags::Multiline);
}
TEST_CASE(regex_lexer)
{
Lexer l("/[.*+?^${}()|[\\]\\\\]/g");
EXPECT(l.next().type() == regex::TokenType::Slash);
EXPECT(l.next().type() == regex::TokenType::LeftBracket);
EXPECT(l.next().type() == regex::TokenType::Period);
EXPECT(l.next().type() == regex::TokenType::Asterisk);
EXPECT(l.next().type() == regex::TokenType::Plus);
EXPECT(l.next().type() == regex::TokenType::Questionmark);
EXPECT(l.next().type() == regex::TokenType::Circumflex);
EXPECT(l.next().type() == regex::TokenType::Dollar);
EXPECT(l.next().type() == regex::TokenType::LeftCurly);
EXPECT(l.next().type() == regex::TokenType::RightCurly);
EXPECT(l.next().type() == regex::TokenType::LeftParen);
EXPECT(l.next().type() == regex::TokenType::RightParen);
EXPECT(l.next().type() == regex::TokenType::Pipe);
EXPECT(l.next().type() == regex::TokenType::LeftBracket);
EXPECT(l.next().type() == regex::TokenType::EscapeSequence);
EXPECT(l.next().type() == regex::TokenType::EscapeSequence);
EXPECT(l.next().type() == regex::TokenType::RightBracket);
EXPECT(l.next().type() == regex::TokenType::Slash);
EXPECT(l.next().type() == regex::TokenType::Char);
}
TEST_CASE(parser_error_parens)
{
String pattern = "test()test";
Lexer l(pattern);
PosixExtendedParser p(l);
p.parse();
EXPECT(p.has_error());
EXPECT(p.error() == Error::EmptySubExpression);
}
TEST_CASE(parser_error_special_characters_used_at_wrong_place)
{
String pattern;
Vector<char, 5> chars = { '*', '+', '?', '{' };
StringBuilder b;
Lexer l;
PosixExtended p(l);
for (auto& ch : chars) {
// First in ere
b.clear();
b.append(ch);
pattern = b.build();
l.set_source(pattern);
p.parse();
EXPECT(p.has_error());
EXPECT(p.error() == Error::InvalidRepetitionMarker);
// After vertical line
b.clear();
b.append("a|");
b.append(ch);
pattern = b.build();
l.set_source(pattern);
p.parse();
EXPECT(p.has_error());
EXPECT(p.error() == Error::InvalidRepetitionMarker);
// After circumflex
b.clear();
b.append("^");
b.append(ch);
pattern = b.build();
l.set_source(pattern);
p.parse();
EXPECT(p.has_error());
EXPECT(p.error() == Error::InvalidRepetitionMarker);
// After dollar
b.clear();
b.append("$");
b.append(ch);
pattern = b.build();
l.set_source(pattern);
p.parse();
EXPECT(p.has_error());
EXPECT(p.error() == Error::InvalidRepetitionMarker);
// After left parens
b.clear();
b.append("(");
b.append(ch);
b.append(")");
pattern = b.build();
l.set_source(pattern);
p.parse();
EXPECT(p.has_error());
EXPECT(p.error() == Error::InvalidRepetitionMarker);
}
}
TEST_CASE(parser_error_vertical_line_used_at_wrong_place)
{
Lexer l;
PosixExtended p(l);
// First in ere
l.set_source("|asdf");
p.parse();
EXPECT(p.has_error());
EXPECT(p.error() == Error::EmptySubExpression);
// Last in ere
l.set_source("asdf|");
p.parse();
EXPECT(p.has_error());
EXPECT(p.error() == Error::EmptySubExpression);
// After left parens
l.set_source("(|asdf)");
p.parse();
EXPECT(p.has_error());
EXPECT(p.error() == Error::EmptySubExpression);
// Proceed right parens
l.set_source("(asdf)|");
p.parse();
EXPECT(p.has_error());
EXPECT(p.error() == Error::EmptySubExpression);
}
TEST_CASE(catch_all_first)
{
Regex<PosixExtended> re("^.*$");
RegexResult m;
re.match("Hello World", m);
EXPECT(m.count == 1);
EXPECT(re.match("Hello World", m));
}
TEST_CASE(catch_all)
{
Regex<PosixExtended> re("^.*$", PosixFlags::Global);
EXPECT(re.has_match("Hello World"));
EXPECT(re.match("Hello World").success);
EXPECT(re.match("Hello World").count == 1);
EXPECT(has_match("Hello World", re));
auto res = match("Hello World", re);
EXPECT(res.success);
EXPECT(res.count == 1);
EXPECT(res.matches.size() == 1);
EXPECT(res.matches.first().view == "Hello World");
}
TEST_CASE(catch_all_again)
{
Regex<PosixExtended> re("^.*$", PosixFlags::Extra);
EXPECT_EQ(has_match("Hello World", re), true);
}
TEST_CASE(char_utf8)
{
Regex<PosixExtended> re("😀");
RegexResult result;
EXPECT_EQ((result = match(Utf8View { "Привет, мир! 😀 γειά σου κόσμος 😀 こんにちは世界" }, re, PosixFlags::Global)).success, true);
EXPECT_EQ(result.count, 2u);
}
TEST_CASE(catch_all_newline)
{
Regex<PosixExtended> re("^.*$", PosixFlags::Multiline | PosixFlags::StringCopyMatches);
RegexResult result;
auto lambda = [&result, &re]() {
String aaa = "Hello World\nTest\n1234\n";
result = match(aaa, re);
EXPECT_EQ(result.success, true);
};
lambda();
EXPECT_EQ(result.count, 3u);
EXPECT_EQ(result.matches.at(0).view, "Hello World");
EXPECT_EQ(result.matches.at(1).view, "Test");
EXPECT_EQ(result.matches.at(2).view, "1234");
}
TEST_CASE(catch_all_newline_view)
{
Regex<PosixExtended> re("^.*$", PosixFlags::Multiline);
RegexResult result;
String aaa = "Hello World\nTest\n1234\n";
result = match(aaa, re);
EXPECT_EQ(result.success, true);
EXPECT_EQ(result.count, 3u);
String str = "Hello World";
EXPECT_EQ(result.matches.at(0).view, str.view());
EXPECT_EQ(result.matches.at(1).view, "Test");
EXPECT_EQ(result.matches.at(2).view, "1234");
}
TEST_CASE(catch_all_newline_2)
{
Regex<PosixExtended> re("^.*$");
RegexResult result;
result = match("Hello World\nTest\n1234\n", re, PosixFlags::Multiline | PosixFlags::StringCopyMatches);
EXPECT_EQ(result.success, true);
EXPECT_EQ(result.count, 3u);
EXPECT_EQ(result.matches.at(0).view, "Hello World");
EXPECT_EQ(result.matches.at(1).view, "Test");
EXPECT_EQ(result.matches.at(2).view, "1234");
result = match("Hello World\nTest\n1234\n", re);
EXPECT_EQ(result.success, true);
EXPECT_EQ(result.count, 1u);
EXPECT_EQ(result.matches.at(0).view, "Hello World\nTest\n1234\n");
}
TEST_CASE(match_all_character_class)
{
Regex<PosixExtended> re("[[:alpha:]]");
String str = "[Window]\nOpacity=255\nAudibleBeep=0\n";
RegexResult result = match(str, re, PosixFlags::Global | PosixFlags::StringCopyMatches);
EXPECT_EQ(result.success, true);
EXPECT_EQ(result.count, 24u);
EXPECT_EQ(result.matches.at(0).view, "W");
EXPECT_EQ(result.matches.at(1).view, "i");
EXPECT_EQ(result.matches.at(2).view, "n");
}
TEST_CASE(match_character_class_with_assertion)
{
Regex<PosixExtended> re("[[:alpha:]]+$");
String str = "abcdef";
RegexResult result = match(str, re);
EXPECT_EQ(result.success, true);
EXPECT_EQ(result.count, 1u);
}
TEST_CASE(example_for_git_commit)
{
Regex<PosixExtended> re("^.*$");
auto result = re.match("Well, hello friends!\nHello World!");
EXPECT(result.success);
EXPECT(result.count == 1);
EXPECT(result.matches.at(0).view.starts_with("Well"));
EXPECT(result.matches.at(0).view.length() == 33);
EXPECT(re.has_match("Well,...."));
result = re.match("Well, hello friends!\nHello World!", PosixFlags::Multiline);
EXPECT(result.success);
EXPECT(result.count == 2);
EXPECT(result.matches.at(0).view == "Well, hello friends!");
EXPECT(result.matches.at(1).view == "Hello World!");
}
TEST_CASE(email_address)
{
Regex<PosixExtended> re("^[A-Z0-9a-z._%+-]{1,64}@([A-Za-z0-9-]{1,63}\\.){1,125}[A-Za-z]{2,63}$");
EXPECT(re.has_match("hello.world@domain.tld"));
EXPECT(re.has_match("this.is.a.very_long_email_address@world.wide.web"));
}
TEST_CASE(ini_file_entries)
{
Regex<PosixExtended> re("[[:alpha:]]*=([[:digit:]]*)|\\[(.*)\\]");
RegexResult result;
if constexpr (REGEX_DEBUG) {
RegexDebug regex_dbg(stderr);
regex_dbg.print_raw_bytecode(re);
regex_dbg.print_header();
regex_dbg.print_bytecode(re);
}
String haystack = "[Window]\nOpacity=255\nAudibleBeep=0\n";
EXPECT_EQ(re.search(haystack.view(), result, PosixFlags::Multiline), true);
EXPECT_EQ(result.count, 3u);
if constexpr (REGEX_DEBUG) {
for (auto& v : result.matches)
fprintf(stderr, "%s\n", v.view.to_string().characters());
}
EXPECT_EQ(result.matches.at(0).view, "[Window]");
EXPECT_EQ(result.capture_group_matches.at(0).at(0).view, "Window");
EXPECT_EQ(result.matches.at(1).view, "Opacity=255");
EXPECT_EQ(result.matches.at(1).line, 1u);
EXPECT_EQ(result.matches.at(1).column, 0u);
EXPECT_EQ(result.capture_group_matches.at(1).at(0).view, "255");
EXPECT_EQ(result.capture_group_matches.at(1).at(0).line, 1u);
EXPECT_EQ(result.capture_group_matches.at(1).at(0).column, 8u);
EXPECT_EQ(result.matches.at(2).view, "AudibleBeep=0");
EXPECT_EQ(result.capture_group_matches.at(2).at(0).view, "0");
EXPECT_EQ(result.capture_group_matches.at(2).at(0).line, 2u);
EXPECT_EQ(result.capture_group_matches.at(2).at(0).column, 12u);
}
TEST_CASE(ini_file_entries2)
{
Regex<PosixExtended> re("[[:alpha:]]*=([[:digit:]]*)");
RegexResult result;
String haystack = "ViewMode=Icon";
EXPECT_EQ(re.match(haystack.view(), result), false);
EXPECT_EQ(result.count, 0u);
EXPECT_EQ(re.search(haystack.view(), result), true);
EXPECT_EQ(result.count, 1u);
}
TEST_CASE(named_capture_group)
{
Regex<PosixExtended> re("[[:alpha:]]*=(?<Test>[[:digit:]]*)");
RegexResult result;
if constexpr (REGEX_DEBUG) {
RegexDebug regex_dbg(stderr);
regex_dbg.print_raw_bytecode(re);
regex_dbg.print_header();
regex_dbg.print_bytecode(re);
}
String haystack = "[Window]\nOpacity=255\nAudibleBeep=0\n";
EXPECT_EQ(re.search(haystack, result, PosixFlags::Multiline), true);
EXPECT_EQ(result.count, 2u);
EXPECT_EQ(result.matches.at(0).view, "Opacity=255");
EXPECT_EQ(result.capture_group_matches.at(0).at(0).view, "255");
EXPECT_EQ(result.capture_group_matches.at(0).at(0).capture_group_name, "Test");
EXPECT_EQ(result.matches.at(1).view, "AudibleBeep=0");
EXPECT_EQ(result.capture_group_matches.at(1).at(0).view, "0");
EXPECT_EQ(result.capture_group_matches.at(1).at(0).capture_group_name, "Test");
}
TEST_CASE(ecma262_named_capture_group_with_dollar_sign)
{
Regex<ECMA262> re("[a-zA-Z]*=(?<$Test$>[0-9]*)");
RegexResult result;
if constexpr (REGEX_DEBUG) {
RegexDebug regex_dbg(stderr);
regex_dbg.print_raw_bytecode(re);
regex_dbg.print_header();
regex_dbg.print_bytecode(re);
}
String haystack = "[Window]\nOpacity=255\nAudibleBeep=0\n";
EXPECT_EQ(re.search(haystack, result, ECMAScriptFlags::Multiline), true);
EXPECT_EQ(result.count, 2u);
EXPECT_EQ(result.matches.at(0).view, "Opacity=255");
EXPECT_EQ(result.capture_group_matches.at(0).at(0).view, "255");
EXPECT_EQ(result.capture_group_matches.at(0).at(0).capture_group_name, "$Test$");
EXPECT_EQ(result.matches.at(1).view, "AudibleBeep=0");
EXPECT_EQ(result.capture_group_matches.at(1).at(0).view, "0");
EXPECT_EQ(result.capture_group_matches.at(1).at(0).capture_group_name, "$Test$");
}
TEST_CASE(a_star)
{
Regex<PosixExtended> re("a*");
RegexResult result;
if constexpr (REGEX_DEBUG) {
RegexDebug regex_dbg(stderr);
regex_dbg.print_raw_bytecode(re);
regex_dbg.print_header();
regex_dbg.print_bytecode(re);
}
String haystack = "[Window]\nOpacity=255\nAudibleBeep=0\n";
EXPECT_EQ(re.search(haystack.view(), result, PosixFlags::Multiline), true);
EXPECT_EQ(result.count, 32u);
if (result.count == 32u) {
EXPECT_EQ(result.matches.at(0).view.length(), 0u);
EXPECT_EQ(result.matches.at(10).view.length(), 1u);
EXPECT_EQ(result.matches.at(10).view, "a");
EXPECT_EQ(result.matches.at(31).view.length(), 0u);
}
}
TEST_CASE(simple_period_end_benchmark)
{
Regex<PosixExtended> re("hello.$");
RegexResult m;
EXPECT_EQ(re.search("Hello1", m), false);
EXPECT_EQ(re.search("hello1hello1", m), true);
EXPECT_EQ(re.search("hello2hell", m), false);
EXPECT_EQ(re.search("hello?", m), true);
}
TEST_CASE(ECMA262_parse)
{
struct _test {
StringView pattern;
regex::Error expected_error { regex::Error::NoError };
regex::ECMAScriptFlags flags {};
};
constexpr _test tests[] {
{ "^hello.$"sv },
{ "^(hello.)$"sv },
{ "^h{0,1}ello.$"sv },
{ "^hello\\W$"sv },
{ "^hell\\w.$"sv },
{ "^hell\\x6f1$"sv }, // ^hello1$
{ "^hel(?:l\\w).$"sv },
{ "^hel(?<LO>l\\w).$"sv },
{ "^[-a-zA-Z\\w\\s]+$"sv },
{ "\\bhello\\B"sv },
{ "^[\\w+/_-]+[=]{0,2}$"sv }, // #4189
{ "^(?:[^<]*(<[\\w\\W]+>)[^>]*$|#([\\w\\-]*)$)"sv }, // #4189
{ "\\/"sv }, // #4189
{ ",/=-:"sv }, // #4243
{ "\\x"sv }, // Even invalid escapes are allowed if ~unicode.
{ "\\x1"sv }, // Even invalid escapes are allowed if ~unicode.
{ "\\x1"sv, regex::Error::InvalidPattern, regex::ECMAScriptFlags::Unicode },
{ "\\x11"sv },
{ "\\x11"sv, regex::Error::NoError, regex::ECMAScriptFlags::Unicode },
{ "\\"sv, regex::Error::InvalidTrailingEscape },
{ "(?"sv, regex::Error::InvalidCaptureGroup },
{ "\\u1234"sv, regex::Error::NoError, regex::ECMAScriptFlags::Unicode },
{ "[\\u1234]"sv, regex::Error::NoError, regex::ECMAScriptFlags::Unicode },
{ "\\u1"sv, regex::Error::InvalidPattern, regex::ECMAScriptFlags::Unicode },
{ "[\\u1]"sv, regex::Error::InvalidPattern, regex::ECMAScriptFlags::Unicode },
{ ",(?"sv, regex::Error::InvalidCaptureGroup }, // #4583
{ "{1}"sv, regex::Error::InvalidPattern },
{ "{1,2}"sv, regex::Error::InvalidPattern },
{ "\\uxxxx"sv, regex::Error::NoError },
{ "\\uxxxx"sv, regex::Error::InvalidPattern, ECMAScriptFlags::Unicode },
{ "\\ud83d"sv, regex::Error::NoError, ECMAScriptFlags::Unicode },
{ "\\ud83d\\uxxxx"sv, regex::Error::InvalidPattern, ECMAScriptFlags::Unicode },
{ "\\u{0}"sv },
{ "\\u{0}"sv, regex::Error::NoError, ECMAScriptFlags::Unicode },
{ "\\u{10ffff}"sv, regex::Error::NoError, ECMAScriptFlags::Unicode },
{ "\\u{10ffff"sv, regex::Error::InvalidPattern, ECMAScriptFlags::Unicode },
{ "\\u{10ffffx"sv, regex::Error::InvalidPattern, ECMAScriptFlags::Unicode },
{ "\\u{110000}"sv, regex::Error::InvalidPattern, ECMAScriptFlags::Unicode },
{ "\\p"sv, regex::Error::InvalidPattern, ECMAScriptFlags::Unicode },
{ "\\p{"sv, regex::Error::InvalidPattern, ECMAScriptFlags::Unicode },
{ "\\p{}"sv, regex::Error::InvalidNameForProperty, ECMAScriptFlags::Unicode },
{ "\\p{AsCiI}"sv, regex::Error::InvalidNameForProperty, ECMAScriptFlags::Unicode },
{ "\\p{hello friends}"sv, regex::Error::InvalidNameForProperty, ECMAScriptFlags::Unicode },
{ "\\p{Prepended_Concatenation_Mark}"sv, regex::Error::InvalidNameForProperty, ECMAScriptFlags::Unicode },
{ "\\p{ASCII}"sv, regex::Error::NoError, ECMAScriptFlags::Unicode },
{ "\\\\p{1}"sv, regex::Error::NoError, ECMAScriptFlags::Unicode },
{ "\\\\p{AsCiI}"sv, regex::Error::InvalidPattern, ECMAScriptFlags::Unicode },
{ "\\\\p{ASCII}"sv, regex::Error::InvalidPattern, ECMAScriptFlags::Unicode },
{ "\\c"sv, regex::Error::NoError, ECMAScriptFlags::BrowserExtended },
{ "\\c"sv, regex::Error::InvalidPattern, ECMAScriptFlags::Unicode },
{ "[\\c]"sv, regex::Error::NoError, ECMAScriptFlags::BrowserExtended },
{ "[\\c]"sv, regex::Error::InvalidPattern, ECMAScriptFlags::Unicode },
{ "\\c`"sv, regex::Error::NoError, ECMAScriptFlags::BrowserExtended },
{ "\\c`"sv, regex::Error::InvalidPattern, ECMAScriptFlags::Unicode },
{ "[\\c`]"sv, regex::Error::NoError, ECMAScriptFlags::BrowserExtended },
{ "[\\c`]"sv, regex::Error::InvalidPattern, ECMAScriptFlags::Unicode },
{ "\\A"sv, regex::Error::NoError, ECMAScriptFlags::BrowserExtended },
{ "\\A"sv, regex::Error::InvalidCharacterClass, ECMAScriptFlags::Unicode },
{ "[\\A]"sv, regex::Error::NoError, ECMAScriptFlags::BrowserExtended },
{ "[\\A]"sv, regex::Error::InvalidPattern, ECMAScriptFlags::Unicode },
{ "\\0"sv, regex::Error::NoError, ECMAScriptFlags::BrowserExtended },
{ "\\0"sv, regex::Error::NoError, combine_flags(ECMAScriptFlags::Unicode, ECMAScriptFlags::BrowserExtended) },
{ "\\00"sv, regex::Error::NoError, ECMAScriptFlags::BrowserExtended },
{ "\\00"sv, regex::Error::InvalidCharacterClass, combine_flags(ECMAScriptFlags::Unicode, ECMAScriptFlags::BrowserExtended) },
{ "[\\0]"sv, regex::Error::NoError, ECMAScriptFlags::BrowserExtended },
{ "[\\0]"sv, regex::Error::NoError, combine_flags(ECMAScriptFlags::Unicode, ECMAScriptFlags::BrowserExtended) },
{ "[\\00]"sv, regex::Error::NoError, ECMAScriptFlags::BrowserExtended },
{ "[\\00]"sv, regex::Error::InvalidPattern, combine_flags(ECMAScriptFlags::Unicode, ECMAScriptFlags::BrowserExtended) },
{ "\\^\\$\\\\\\.\\*\\+\\?\\(\\)\\[\\]\\{\\}\\|\\/"sv, regex::Error::NoError, ECMAScriptFlags::Unicode },
{ "[\\^\\$\\\\\\.\\*\\+\\?\\(\\)\\[\\]\\{\\}\\|\\/]"sv, regex::Error::NoError, ECMAScriptFlags::Unicode },
{ "]"sv, regex::Error::NoError, ECMAScriptFlags::BrowserExtended },
{ "]"sv, regex::Error::InvalidPattern, ECMAScriptFlags::Unicode },
{ "\\]"sv, regex::Error::NoError, ECMAScriptFlags::Unicode },
{ "}"sv, regex::Error::NoError, ECMAScriptFlags::BrowserExtended },
{ "}"sv, regex::Error::InvalidPattern, ECMAScriptFlags::Unicode },
{ "\\}"sv, regex::Error::NoError, ECMAScriptFlags::Unicode },
{ "a{9007199254740991}"sv }, // 2^53 - 1
{ "a{9007199254740991,}"sv },
{ "a{9007199254740991,9007199254740991}"sv },
{ "a{9007199254740992}"sv, regex::Error::InvalidBraceContent },
{ "a{9007199254740992,}"sv, regex::Error::InvalidBraceContent },
{ "a{9007199254740991,9007199254740992}"sv, regex::Error::InvalidBraceContent },
{ "a{9007199254740992,9007199254740991}"sv, regex::Error::InvalidBraceContent },
{ "a{9007199254740992,9007199254740992}"sv, regex::Error::InvalidBraceContent },
};
for (auto& test : tests) {
Regex<ECMA262> re(test.pattern, test.flags);
EXPECT_EQ(re.parser_result.error, test.expected_error);
if constexpr (REGEX_DEBUG) {
dbgln("\n");
RegexDebug regex_dbg(stderr);
regex_dbg.print_raw_bytecode(re);
regex_dbg.print_header();
regex_dbg.print_bytecode(re);
dbgln("\n");
}
}
}
TEST_CASE(ECMA262_match)
{
struct _test {
StringView pattern;
StringView subject;
bool matches { true };
ECMAScriptFlags options {};
};
// clang-format off
constexpr _test tests[] {
{ "^hello.$"sv, "hello1"sv },
{ "^(hello.)$"sv, "hello1"sv },
{ "^h{0,1}ello.$"sv, "ello1"sv },
{ "^hello\\W$"sv, "hello!"sv },
{ "^hell\\w.$"sv, "hellx!"sv },
{ "^hell\\x6f1$"sv, "hello1"sv },
{ "^hel(?<LO>l.)1$"sv, "hello1"sv },
{ "^hel(?<LO>l.)1*\\k<LO>.$"sv, "hello1lo1"sv },
{ "^[-a-z1-3\\s]+$"sv, "hell2 o1"sv },
{ "^[\\0-\\x1f]$"sv, "\n"sv },
{ .pattern = "\\bhello\\B"sv, .subject = "hello1"sv, .options = ECMAScriptFlags::Global },
{ "\\b.*\\b"sv, "hello1"sv },
{ "[^\\D\\S]{2}"sv, "1 "sv },
{ "bar(?=f.)foo"sv, "barfoo"sv },
{ "bar(?=foo)bar"sv, "barbar"sv, false },
{ "bar(?!foo)bar"sv, "barbar"sv, true },
{ "bar(?!bar)bar"sv, "barbar"sv, false },
{ "bar.*(?<=foo)"sv, "barbar"sv, false },
{ "bar.*(?<!foo)"sv, "barbar"sv, true },
{ "((...)X)+"sv, "fooXbarXbazX"sv, true },
{ "(?:)"sv, ""sv, true },
{ "\\^"sv, "^"sv },
{ "\\^\\$\\\\\\.\\*\\+\\?\\(\\)\\[\\]\\{\\}\\|\\/"sv, "^$\\.*+?()[]{}|/"sv, true, ECMAScriptFlags::Unicode },
{ "[\\^\\$\\\\\\.\\*\\+\\?\\(\\)\\[\\]\\{\\}\\|\\/]{15}"sv, "^$\\.*+?()[]{}|/"sv, true, ECMAScriptFlags::Unicode },
{ "(a{2}){3}"sv, "aaaaaa"sv },
{ "(a{2}){3}"sv, "aaaabaa"sv, false },
{ "(a{2}){4}"sv, "aaaaaaaa"sv },
{ "(a{2}){4}"sv, "aaaaaabaa"sv, false },
{ "(a{3}){2}"sv, "aaaaaa"sv },
{ "(a{3}){2}"sv, "aaaabaa"sv, false },
{ "(a{4}){2}"sv, "aaaaaaaa"sv },
{ "(a{4}){2}"sv, "aaaaaabaa"sv, false },
{ "\\u{4}"sv, "uuuu" },
{ "(?<=.{3})f"sv, "abcdef"sv, true, (ECMAScriptFlags)regex::AllFlags::Global },
{ "(?<=.{3})f"sv, "abc😀ef"sv, true, (ECMAScriptFlags)regex::AllFlags::Global },
// ECMA262, B.1.4. Regular Expression Pattern extensions for browsers
{ "{"sv, "{"sv, true, ECMAScriptFlags::BrowserExtended },
{ "\\5"sv, "\5"sv, true, ECMAScriptFlags::BrowserExtended },
{ "\\05"sv, "\5"sv, true, ECMAScriptFlags::BrowserExtended },
{ "\\455"sv, "\45""5"sv, true, ECMAScriptFlags::BrowserExtended },
{ "\\314"sv, "\314"sv, true, ECMAScriptFlags::BrowserExtended },
{ "\\c"sv, "\\c"sv, true, ECMAScriptFlags::BrowserExtended },
{ "\\cf"sv, "\06"sv, true, ECMAScriptFlags::BrowserExtended },
{ "\\c1"sv, "\\c1"sv, true, ECMAScriptFlags::BrowserExtended },
{ "[\\c1]"sv, "\x11"sv, true, ECMAScriptFlags::BrowserExtended },
{ "[\\w-\\d]"sv, "-"sv, true, ECMAScriptFlags::BrowserExtended },
{ "^(?:^^\\.?|[!+-]|!=|!==|#|%|%=|&|&&|&&=|&=|\\(|\\*|\\*=|\\+=|,|-=|->|\\/|\\/=|:|::|;|<|<<|<<=|<=|=|==|===|>|>=|>>|>>=|>>>|>>>=|[?@[^]|\\^=|\\^\\^|\\^\\^=|{|\\||\\|=|\\|\\||\\|\\|=|~|break|case|continue|delete|do|else|finally|instanceof|return|throw|try|typeof)\\s*(\\/(?=[^*/])(?:[^/[\\\\]|\\\\[\\S\\s]|\\[(?:[^\\\\\\]]|\\\\[\\S\\s])*(?:]|$))+\\/)"sv,
"return /xx/"sv, true, ECMAScriptFlags::BrowserExtended
}, // #5517, appears to be matching JS expressions that involve regular expressions...
{ "a{2,}"sv, "aaaa"sv }, // #5518
{ "\\0"sv, "\0"sv, true, ECMAScriptFlags::BrowserExtended },
{ "\\0"sv, "\0"sv, true, combine_flags(ECMAScriptFlags::Unicode, ECMAScriptFlags::BrowserExtended) },
{ "\\01"sv, "\1"sv, true, ECMAScriptFlags::BrowserExtended },
{ "[\\0]"sv, "\0"sv, true, ECMAScriptFlags::BrowserExtended },
{ "[\\0]"sv, "\0"sv, true, combine_flags(ECMAScriptFlags::Unicode, ECMAScriptFlags::BrowserExtended) },
{ "[\\01]"sv, "\1"sv, true, ECMAScriptFlags::BrowserExtended },
};
// clang-format on
for (auto& test : tests) {
Regex<ECMA262> re(test.pattern, test.options);
if constexpr (REGEX_DEBUG) {
dbgln("\n");
RegexDebug regex_dbg(stderr);
regex_dbg.print_raw_bytecode(re);
regex_dbg.print_header();
regex_dbg.print_bytecode(re);
dbgln("\n");
}
EXPECT_EQ(re.parser_result.error, Error::NoError);
EXPECT_EQ(re.match(test.subject).success, test.matches);
}
}
TEST_CASE(ECMA262_unicode_match)
{
struct _test {
StringView pattern;
StringView subject;
bool matches { true };
ECMAScriptFlags options {};
};
_test tests[] {
{ "\\ud83d"sv, "😀"sv, true },
{ "\\ud83d"sv, "😀"sv, false, ECMAScriptFlags::Unicode },
{ "\\ude00"sv, "😀"sv, true },
{ "\\ude00"sv, "😀"sv, false, ECMAScriptFlags::Unicode },
{ "\\ud83d\\ude00"sv, "😀"sv, true },
{ "\\ud83d\\ude00"sv, "😀"sv, true, ECMAScriptFlags::Unicode },
{ "\\u{1f600}"sv, "😀"sv, true, ECMAScriptFlags::Unicode },
{ "\\ud83d\\ud83d"sv, "\xed\xa0\xbd\xed\xa0\xbd"sv, true },
{ "\\ud83d\\ud83d"sv, "\xed\xa0\xbd\xed\xa0\xbd"sv, true, ECMAScriptFlags::Unicode },
{ "(?<=.{3})f"sv, "abcdef"sv, true, ECMAScriptFlags::Unicode },
{ "(?<=.{3})f"sv, "abc😀ef"sv, true, ECMAScriptFlags::Unicode },
{ "(?<𝓑𝓻𝓸𝔀𝓷>brown)"sv, "brown"sv, true, ECMAScriptFlags::Unicode },
{ "(?<\\u{1d4d1}\\u{1d4fb}\\u{1d4f8}\\u{1d500}\\u{1d4f7}>brown)"sv, "brown"sv, true, ECMAScriptFlags::Unicode },
{ "(?<\\ud835\\udcd1\\ud835\\udcfb\\ud835\\udcf8\\ud835\\udd00\\ud835\\udcf7>brown)"sv, "brown"sv, true, ECMAScriptFlags::Unicode },
};
for (auto& test : tests) {
Regex<ECMA262> re(test.pattern, (ECMAScriptFlags)regex::AllFlags::Global | test.options);
auto subject = AK::utf8_to_utf16(test.subject);
Utf16View view { subject };
if constexpr (REGEX_DEBUG) {
dbgln("\n");
RegexDebug regex_dbg(stderr);
regex_dbg.print_raw_bytecode(re);
regex_dbg.print_header();
regex_dbg.print_bytecode(re);
dbgln("\n");
}
EXPECT_EQ(re.parser_result.error, Error::NoError);
EXPECT_EQ(re.match(view).success, test.matches);
}
}
TEST_CASE(ECMA262_property_match)
{
struct _test {
StringView pattern;
StringView subject;
bool matches { true };
ECMAScriptFlags options {};
};
constexpr _test tests[] {
{ "\\p{ASCII}"sv, "a"sv, false },
{ "\\p{ASCII}"sv, "p{ASCII}"sv, true },
{ "\\p{ASCII}"sv, "a"sv, true, ECMAScriptFlags::Unicode },
{ "\\p{ASCII}"sv, "😀"sv, false, ECMAScriptFlags::Unicode },
{ "\\P{ASCII}"sv, "a"sv, false, ECMAScriptFlags::Unicode },
{ "\\P{ASCII}"sv, "😀"sv, true, ECMAScriptFlags::Unicode },
{ "\\p{ASCII_Hex_Digit}"sv, "1"sv, true, ECMAScriptFlags::Unicode },
{ "\\p{ASCII_Hex_Digit}"sv, "a"sv, true, ECMAScriptFlags::Unicode },
{ "\\p{ASCII_Hex_Digit}"sv, "x"sv, false, ECMAScriptFlags::Unicode },
{ "\\P{ASCII_Hex_Digit}"sv, "1"sv, false, ECMAScriptFlags::Unicode },
{ "\\P{ASCII_Hex_Digit}"sv, "a"sv, false, ECMAScriptFlags::Unicode },
{ "\\P{ASCII_Hex_Digit}"sv, "x"sv, true, ECMAScriptFlags::Unicode },
{ "\\p{Any}"sv, "\xcd\xb8"sv, true, ECMAScriptFlags::Unicode }, // U+0378, which is an unassigned code point.
{ "\\P{Any}"sv, "\xcd\xb8"sv, false, ECMAScriptFlags::Unicode }, // U+0378, which is an unassigned code point.
{ "\\p{Assigned}"sv, "\xcd\xb8"sv, false, ECMAScriptFlags::Unicode }, // U+0378, which is an unassigned code point.
{ "\\P{Assigned}"sv, "\xcd\xb8"sv, true, ECMAScriptFlags::Unicode }, // U+0378, which is an unassigned code point.
{ "\\p{Lu}"sv, "a"sv, false, ECMAScriptFlags::Unicode },
{ "\\p{Lu}"sv, "A"sv, true, ECMAScriptFlags::Unicode },
{ "\\p{Lu}"sv, "9"sv, false, ECMAScriptFlags::Unicode },
{ "\\p{Cased_Letter}"sv, "a"sv, true, ECMAScriptFlags::Unicode },
{ "\\p{Cased_Letter}"sv, "A"sv, true, ECMAScriptFlags::Unicode },
{ "\\p{Cased_Letter}"sv, "9"sv, false, ECMAScriptFlags::Unicode },
{ "\\P{Cased_Letter}"sv, "a"sv, false, ECMAScriptFlags::Unicode },
{ "\\P{Cased_Letter}"sv, "A"sv, false, ECMAScriptFlags::Unicode },
{ "\\P{Cased_Letter}"sv, "9"sv, true, ECMAScriptFlags::Unicode },
{ "\\p{General_Category=Cased_Letter}"sv, "a"sv, true, ECMAScriptFlags::Unicode },
{ "\\p{General_Category=Cased_Letter}"sv, "A"sv, true, ECMAScriptFlags::Unicode },
{ "\\p{General_Category=Cased_Letter}"sv, "9"sv, false, ECMAScriptFlags::Unicode },
{ "\\p{gc=Cased_Letter}"sv, "a"sv, true, ECMAScriptFlags::Unicode },
{ "\\p{gc=Cased_Letter}"sv, "A"sv, true, ECMAScriptFlags::Unicode },
{ "\\p{gc=Cased_Letter}"sv, "9"sv, false, ECMAScriptFlags::Unicode },
{ "\\p{Script=Latin}"sv, "a"sv, true, ECMAScriptFlags::Unicode },
{ "\\p{Script=Latin}"sv, "A"sv, true, ECMAScriptFlags::Unicode },
{ "\\p{Script=Latin}"sv, "9"sv, false, ECMAScriptFlags::Unicode },
{ "\\p{sc=Latin}"sv, "a"sv, true, ECMAScriptFlags::Unicode },
{ "\\p{sc=Latin}"sv, "A"sv, true, ECMAScriptFlags::Unicode },
{ "\\p{sc=Latin}"sv, "9"sv, false, ECMAScriptFlags::Unicode },
{ "\\p{Script_Extensions=Deva}"sv, "a"sv, false, ECMAScriptFlags::Unicode },
{ "\\p{Script_Extensions=Beng}"sv, "\xe1\xb3\x95"sv, true, ECMAScriptFlags::Unicode }, // U+01CD5
{ "\\p{Script_Extensions=Deva}"sv, "\xe1\xb3\x95"sv, true, ECMAScriptFlags::Unicode }, // U+01CD5
{ "\\p{scx=Deva}"sv, "a"sv, false, ECMAScriptFlags::Unicode },
{ "\\p{scx=Beng}"sv, "\xe1\xb3\x95"sv, true, ECMAScriptFlags::Unicode }, // U+01CD5
{ "\\p{scx=Deva}"sv, "\xe1\xb3\x95"sv, true, ECMAScriptFlags::Unicode }, // U+01CD5
};
for (auto& test : tests) {
Regex<ECMA262> re(test.pattern, (ECMAScriptFlags)regex::AllFlags::Global | regex::ECMAScriptFlags::BrowserExtended | test.options);
auto subject = AK::utf8_to_utf16(test.subject);
Utf16View view { subject };
if constexpr (REGEX_DEBUG) {
dbgln("\n");
RegexDebug regex_dbg(stderr);
regex_dbg.print_raw_bytecode(re);
regex_dbg.print_header();
regex_dbg.print_bytecode(re);
dbgln("\n");
}
EXPECT_EQ(re.parser_result.error, Error::NoError);
EXPECT_EQ(re.match(view).success, test.matches);
}
}
TEST_CASE(replace)
{
struct _test {
StringView pattern;
StringView replacement;
StringView subject;
StringView expected;
ECMAScriptFlags options {};
};
constexpr _test tests[] {
{ "foo(.+)"sv, "aaa"sv, "test"sv, "test"sv },
{ "foo(.+)"sv, "test\\1"sv, "foobar"sv, "testbar"sv },
{ "foo(.+)"sv, "\\2\\1"sv, "foobar"sv, "\\2bar"sv },
{ "foo(.+)"sv, "\\\\\\1"sv, "foobar"sv, "\\bar"sv },
{ "foo(.)"sv, "a\\1"sv, "fooxfooy"sv, "axay"sv, ECMAScriptFlags::Multiline },
};
for (auto& test : tests) {
Regex<ECMA262> re(test.pattern, test.options);
if constexpr (REGEX_DEBUG) {
dbgln("\n");
RegexDebug regex_dbg(stderr);
regex_dbg.print_raw_bytecode(re);
regex_dbg.print_header();
regex_dbg.print_bytecode(re);
dbgln("\n");
}
EXPECT_EQ(re.parser_result.error, Error::NoError);
EXPECT_EQ(re.replace(test.subject, test.replacement), test.expected);
}
}
TEST_CASE(case_insensitive_match)
{
Regex<PosixExtended> re("cd", PosixFlags::Insensitive | PosixFlags::Global);
auto result = re.match("AEKFCD");
EXPECT_EQ(result.success, true);
if (result.success) {
EXPECT_EQ(result.matches.at(0).column, 4ul);
}
}
TEST_CASE(extremely_long_fork_chain)
{
Regex<ECMA262> re("(?:aa)*");
auto result = re.match(String::repeated('a', 100'000));
EXPECT_EQ(result.success, true);
}
static auto g_lots_of_a_s = String::repeated('a', 10'000'000);
BENCHMARK_CASE(fork_performance)
{
Regex<ECMA262> re("(?:aa)*");
auto result = re.match(g_lots_of_a_s);
EXPECT_EQ(result.success, true);
}