LibC+LibRegex: Move central regex definitions into LibC/bits

This decouples LibRegex from the serenity LibC.
Fixes #15251.

2 files changed, 55 insertions, 46 deletions

diff --git a/Userland/Libraries/LibC/bits/regex_defs.h b/Userland/Libraries/LibC/bits/regex_defs.h
new file mode 100644
index 0000000000..db1e52c13b
--- /dev/null
+++ b/Userland/Libraries/LibC/bits/regex_defs.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2020, Emanuel Sprung <emanuel.sprung@gmail.com>
+ * Copyright (c) 2020-2022, Ali Mohammad Pur <mpfard@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+enum __Regex_Error {
+    __Regex_NoError,
+    __Regex_InvalidPattern,              // Invalid regular expression.
+    __Regex_InvalidCollationElement,     // Invalid collating element referenced.
+    __Regex_InvalidCharacterClass,       // Invalid character class type referenced.
+    __Regex_InvalidTrailingEscape,       // Trailing \ in pattern.
+    __Regex_InvalidNumber,               // Number in \digit invalid or in error.
+    __Regex_MismatchingBracket,          // [ ] imbalance.
+    __Regex_MismatchingParen,            // ( ) imbalance.
+    __Regex_MismatchingBrace,            // { } imbalance.
+    __Regex_InvalidBraceContent,         // Content of {} invalid: not a number, number too large, more than two numbers, first larger than second.
+    __Regex_InvalidBracketContent,       // Content of [] invalid.
+    __Regex_InvalidRange,                // Invalid endpoint in range expression.
+    __Regex_InvalidRepetitionMarker,     // ?, * or + not preceded by valid regular expression.
+    __Regex_ReachedMaxRecursion,         // MaximumRecursion has been reached.
+    __Regex_EmptySubExpression,          // Sub expression has empty content.
+    __Regex_InvalidCaptureGroup,         // Content of capture group is invalid.
+    __Regex_InvalidNameForCaptureGroup,  // Name of capture group is invalid.
+    __Regex_InvalidNameForProperty,      // Name of property is invalid.
+    __Regex_DuplicateNamedCapture,       // Duplicate named capture group
+    __Regex_InvalidCharacterClassEscape, // Invalid escaped entity in character class.
+};
+
+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,
+};
diff --git a/Userland/Libraries/LibC/regex.h b/Userland/Libraries/LibC/regex.h
index 18eea479a5..6d82d883ea 100644
--- a/Userland/Libraries/LibC/regex.h
+++ b/Userland/Libraries/LibC/regex.h
@@ -6,6 +6,7 @@
 
 #pragma once
 
+#include "bits/regex_defs.h"
 #include <stddef.h>
 #include <sys/cdefs.h>
 #include <sys/types.h>
@@ -20,29 +21,6 @@ typedef struct {
     size_t re_nsub;
 } regex_t;
 
-enum __Regex_Error {
-    __Regex_NoError,
-    __Regex_InvalidPattern,              // Invalid regular expression.
-    __Regex_InvalidCollationElement,     // Invalid collating element referenced.
-    __Regex_InvalidCharacterClass,       // Invalid character class type referenced.
-    __Regex_InvalidTrailingEscape,       // Trailing \ in pattern.
-    __Regex_InvalidNumber,               // Number in \digit invalid or in error.
-    __Regex_MismatchingBracket,          // [ ] imbalance.
-    __Regex_MismatchingParen,            // ( ) imbalance.
-    __Regex_MismatchingBrace,            // { } imbalance.
-    __Regex_InvalidBraceContent,         // Content of {} invalid: not a number, number too large, more than two numbers, first larger than second.
-    __Regex_InvalidBracketContent,       // Content of [] invalid.
-    __Regex_InvalidRange,                // Invalid endpoint in range expression.
-    __Regex_InvalidRepetitionMarker,     // ?, * or + not preceded by valid regular expression.
-    __Regex_ReachedMaxRecursion,         // MaximumRecursion has been reached.
-    __Regex_EmptySubExpression,          // Sub expression has empty content.
-    __Regex_InvalidCaptureGroup,         // Content of capture group is invalid.
-    __Regex_InvalidNameForCaptureGroup,  // Name of capture group is invalid.
-    __Regex_InvalidNameForProperty,      // Name of property is invalid.
-    __Regex_DuplicateNamedCapture,       // Duplicate named capture group
-    __Regex_InvalidCharacterClassEscape, // Invalid escaped entity in character class.
-};
-
 enum ReError {
     REG_NOERR = __Regex_NoError,
     REG_BADPAT = __Regex_InvalidPattern,            // Invalid regular expression.
@@ -68,29 +46,6 @@ typedef struct {
     regoff_t rm_cnt; // number of matches
 } regmatch_t;
 
-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,
-};
-
 // Values for the cflags parameter to the regcomp() function:
 #define REG_EXTENDED __Regex_Extended                // Use Extended Regular Expressions.
 #define REG_ICASE __Regex_Insensitive                // Ignore case in match.