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LibRegex: Implement ECMA262 multiline matching without splitting lines

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As ECMA262 regex allows `[^]` and literal newlines to match newlines in
the input string, we shouldn't split the input string into lines, rather
simply make boundaries and catchall patterns capable of checking for
these conditions specifically.
This commit is contained in:
Ali Mohammad Pur 2022-01-25 13:30:27 +03:30 • committed by Ali Mohammad Pur
parent 98183ef572
commit 5fac41f733
7 changed files with 55 additions and 20 deletions
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3
Userland/Libraries/LibRegex/RegexOptions.h
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@ -16,7 +16,7 @@
namespace regex {
using FlagsUnderlyingType = u16;
using FlagsUnderlyingType = u32;
enum class AllFlags {
Global = __Regex_Global, // All matches (don't return after first match)
@ -35,6 +35,7 @@ enum class AllFlags {
SkipTrimEmptyMatches = __Regex_SkipTrimEmptyMatches, // Do not remove empty capture group results.
Internal_Stateful = __Regex_Internal_Stateful, // Make global matches match one result at a time, and further match() calls on the same instance continue where the previous one left off.
Internal_BrowserExtended = __Regex_Internal_BrowserExtended, // Only for ECMA262, Enable the behaviors defined in section B.1.4. of the ECMA262 spec.
Internal_ConsiderNewline = __Regex_Internal_ConsiderNewline, // Only for ECMA262, Allow multiline matches to consider newlines as line boundaries.
Last = Internal_BrowserExtended,
};