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LibRegex: Make '.' reject matching LF / LS / PS as per the ECMA262 spec

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Previously we allowed it to match those, but the ECMA262 spec disallows
these (except in DotAll).
This commit is contained in:
Ali Mohammad Pur 2023-02-15 09:55:43 +03:30 • committed by Andreas Kling
parent 1e022295c4
commit 936a9fd759
4 changed files with 59 additions and 43 deletions
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41
Userland/Libraries/LibC/bits/regex_defs.h
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@ -31,24 +31,25 @@ enum __Regex_Error {
};
enum __RegexAllFlags {
__Regex_Global = 1, // All matches (don't return after first match)
__Regex_Insensitive = __Regex_Global << 1, // Case insensitive match (ignores case of [a-zA-Z])
__Regex_Ungreedy = __Regex_Global << 2, // The match becomes lazy by default. Now a ? following a quantifier makes it greedy
__Regex_Unicode = __Regex_Global << 3, // Enable all unicode features and interpret all unicode escape sequences as such
__Regex_Extended = __Regex_Global << 4, // Ignore whitespaces. Spaces and text after a # in the pattern are ignored
__Regex_Extra = __Regex_Global << 5, // Disallow meaningless escapes. A \ followed by a letter with no special meaning is faulted
__Regex_MatchNotBeginOfLine = __Regex_Global << 6, // Pattern is not forced to ^ -> search in whole string!
__Regex_MatchNotEndOfLine = __Regex_Global << 7, // Don't Force the dollar sign, $, to always match end of the string, instead of end of the line. This option is ignored if the Multiline-flag is set
__Regex_SkipSubExprResults = __Regex_Global << 8, // Do not return sub expressions in the result
__Regex_StringCopyMatches = __Regex_Global << 9, // Do explicitly copy results into new allocated string instead of StringView to original string.
__Regex_SingleLine = __Regex_Global << 10, // Dot matches newline characters
__Regex_Sticky = __Regex_Global << 11, // Force the pattern to only match consecutive matches from where the previous match ended.
__Regex_Multiline = __Regex_Global << 12, // Handle newline characters. Match each line, one by one.
__Regex_SkipTrimEmptyMatches = __Regex_Global << 13, // Do not remove empty capture group results.
__Regex_SingleMatch = __Regex_Global << 14, // Stop after acquiring a single match.
__Regex_UnicodeSets = __Regex_Global << 15, // ECMA262 Parser specific: Allow set operations in char classes.
__Regex_Internal_Stateful = __Regex_Global << 16, // Internal flag; enables stateful matches.
__Regex_Internal_BrowserExtended = __Regex_Global << 17, // Internal flag; enable browser-specific ECMA262 extensions.
__Regex_Internal_ConsiderNewline = __Regex_Global << 18, // Internal flag; allow matchers to consider newlines as line separators.
__Regex_Last = __Regex_UnicodeSets,
__Regex_Global = 1, // All matches (don't return after first match)
__Regex_Insensitive = __Regex_Global << 1, // Case insensitive match (ignores case of [a-zA-Z])
__Regex_Ungreedy = __Regex_Global << 2, // The match becomes lazy by default. Now a ? following a quantifier makes it greedy
__Regex_Unicode = __Regex_Global << 3, // Enable all unicode features and interpret all unicode escape sequences as such
__Regex_Extended = __Regex_Global << 4, // Ignore whitespaces. Spaces and text after a # in the pattern are ignored
__Regex_Extra = __Regex_Global << 5, // Disallow meaningless escapes. A \ followed by a letter with no special meaning is faulted
__Regex_MatchNotBeginOfLine = __Regex_Global << 6, // Pattern is not forced to ^ -> search in whole string!
__Regex_MatchNotEndOfLine = __Regex_Global << 7, // Don't Force the dollar sign, $, to always match end of the string, instead of end of the line. This option is ignored if the Multiline-flag is set
__Regex_SkipSubExprResults = __Regex_Global << 8, // Do not return sub expressions in the result
__Regex_StringCopyMatches = __Regex_Global << 9, // Do explicitly copy results into new allocated string instead of StringView to original string.
__Regex_SingleLine = __Regex_Global << 10, // Dot matches newline characters
__Regex_Sticky = __Regex_Global << 11, // Force the pattern to only match consecutive matches from where the previous match ended.
__Regex_Multiline = __Regex_Global << 12, // Handle newline characters. Match each line, one by one.
__Regex_SkipTrimEmptyMatches = __Regex_Global << 13, // Do not remove empty capture group results.
__Regex_SingleMatch = __Regex_Global << 14, // Stop after acquiring a single match.
__Regex_UnicodeSets = __Regex_Global << 15, // ECMA262 Parser specific: Allow set operations in char classes.
__Regex_Internal_Stateful = __Regex_Global << 16, // Internal flag; enables stateful matches.
__Regex_Internal_BrowserExtended = __Regex_Global << 17, // Internal flag; enable browser-specific ECMA262 extensions.
__Regex_Internal_ConsiderNewline = __Regex_Global << 18, // Internal flag; allow matchers to consider newlines as line separators.
__Regex_Internal_ECMA262DotSemantics = __Regex_Global << 19, // Internal flag; use ECMA262 semantics for dot ('.') - disallow CR/LF/LS/PS instead of just CR.
__Regex_Last = __Regex_Internal_ECMA262DotSemantics,
};