Class JSRegexLexer

java.lang.Object

com.oracle.truffle.regex.tregex.parser.RegexLexer

com.oracle.truffle.regex.tregex.parser.JSRegexLexer

public final class JSRegexLexer
extends RegexLexer

Nested Class Summary

Nested classes/interfaces inherited from class com.oracle.truffle.regex.tregex.parser.RegexLexer

RegexLexer.ClassSetOperator, RegexLexer.ParseGroupNameResult, RegexLexer.ParseGroupNameResultState

Field Summary

Fields inherited from class com.oracle.truffle.regex.tregex.parser.RegexLexer

compilationBuffer, DEFAULT_WHITESPACE, namedCaptureGroups, pattern, position, PREDEFINED_CHAR_CLASSES, source

Constructor Summary

Constructors

Constructor	Description
JSRegexLexer(RegexSource source, RegexFlags flags, CompilationBuffer compilationBuffer)

Method Summary

Modifier and Type	Method	Description
protected long	boundedQuantifierMaxValue()	The maximum value allowed while parsing bounded quantifiers.
protected ClassSetContents	caseFoldClassSetAtom(ClassSetContents classSetContents)	Case folds an atom in a class set expression.
protected void	caseFoldUnfold(CodePointSetAccumulator charClass)	Updates a character set by expanding it to the set of characters that case fold to the same characters as the characters currently in the set.
protected void	checkClassSetCharacter(int codePoint)	Checks whether codepoint can appear as an unescaped literal class set character.
protected CodePointSet	complementClassSet(CodePointSet codePointSet)	Returns the complement of a class set element.
protected boolean	featureEnabledAZPositionAssertions()	Returns true if \A and \Z position assertions are supported.
protected boolean	featureEnabledBoundedQuantifierEmptyMin()	Returns true if empty minimum values in bounded quantifiers (e.g.
protected boolean	featureEnabledCCRangeWithPredefCharClass()	Try to parse ranges with pre-defined inner character classes, e.g.
protected boolean	featureEnabledCharClassFirstBracketIsLiteral()	Returns true if the first character in a character class must be interpreted as part of the character set, even if it is the closing bracket ']'.
protected boolean	featureEnabledClassSetExpressions()	Returns true if class set expressions (e.g.
protected boolean	featureEnabledForwardReferences()	Returns true if forward references are allowed.
protected boolean	featureEnabledGroupComments()	Returns true if group comments (e.g.
protected boolean	featureEnabledIgnoreCase()	Returns true if ignore-case mode is currently enabled.
protected boolean	featureEnabledIgnoreWhiteSpace()	Returns true if white space in the pattern is ignored.
protected boolean	featureEnabledLineComments()	Returns true if line comments (e.g.
protected boolean	featureEnabledNestedCharClasses()	Returns true if nested character classes are supported.
protected boolean	featureEnabledOctalEscapes()	Returns true if octal escapes (e.g.
protected boolean	featureEnabledPOSIXCharClasses()	Returns true if POSIX character classes, character equivalence classes, and the POSIX Collating Element Operator are supported.
protected boolean	featureEnabledPossessiveQuantifiers()	Returns true if possessive quantifiers (+ suffix) are allowed.
protected boolean	featureEnabledSpecialGroups()	Returns true if any constructs that alter a capture group's function, such as non-capturing groups (?:) or look-around assertions (?=), are supported.
protected boolean	featureEnabledUnicodePropertyEscapes()	Returns true if unicode property escapes (e.g.
protected boolean	featureEnabledZLowerCaseAssertion()	Returns true if \z position assertion is supported.
protected CodePointSet	getDotCodePointSet()	Returns the code point set represented by the dot operator.
protected CodePointSet	getIdContinue()	Returns the set of all codepoints a group identifier may continue with.
protected CodePointSet	getIdStart()	Returns the set of all codepoints a group identifier may begin with.
protected int	getMaxBackReferenceDigits()	Returns the maximum number of digits to parse when parsing a back-reference.
protected CodePointSet	getPOSIXCharClass(String name)	Returns the POSIX character class associated to the given name.
protected CodePointSet	getPredefinedCharClass(char c)	Returns the CodePointSet associated with the given predefined character class (e.g.
protected TBitSet	getWhitespace()	The set of codepoints to consider as whitespace in comments and "ignore white space" mode.
protected Token	handleBoundedQuantifierEmptyOrMissingMin()	Handle missing } or minimum value in bounded quantifiers.
protected Token	handleBoundedQuantifierInvalidCharacter()	Handle non-digit characters in bounded quantifiers.
protected RegexSyntaxException	handleBoundedQuantifierOutOfOrder()	Handle {2,1}.
protected Token	handleBoundedQuantifierOverflow(long min, long max)	Handle integer overflows in quantifier bounds, e.g.
protected Token	handleBoundedQuantifierOverflowMin(long min, long max)	Handle integer overflows in quantifier bounds, e.g.
protected RegexSyntaxException	handleCCRangeOutOfOrder(int startPos)	Handle out of order character class range elements, e.g.
protected void	handleCCRangeWithPredefCharClass(int startPos, ClassSetContents firstAtom, ClassSetContents secondAtom)	Handle non-codepoint character class range elements, e.g.
protected RegexSyntaxException	handleComplementOfStringSet()	Handle complement of class set expressions containing strings, e.g.
protected void	handleGroupRedefinition(String name, int newId, int oldId)
protected void	handleIncompleteEscapeX()	Handle incomplete hex escapes, e.g.
protected Token	handleInvalidBackReference(int reference)	Handle group references to non-existent groups.
protected RegexSyntaxException	handleInvalidCharInCharClass()
protected RegexSyntaxException	handleInvalidGroupBeginQ()	Handle groups starting with (? and invalid next char.
protected RegexSyntaxException	handleMissingClassSetOperand(RegexLexer.ClassSetOperator operator)	Handle missing operands in class set expressions, e.g.
protected RegexSyntaxException	handleMixedClassSetOperators(RegexLexer.ClassSetOperator leftOperator, RegexLexer.ClassSetOperator rightOperator)	Handle class set expressions with mixed set operators in the same nested set.
protected void	handleOctalOutOfRange()	Handle octal values larger than 255.
protected RegexSyntaxException	handleRangeAsClassSetOperand(RegexLexer.ClassSetOperator operator)	Handle character ranges as operands in class set expressions with operators other than union.
protected void	handleUnfinishedEscape()	Handle unfinished escape (e.g.
protected void	handleUnfinishedGroupComment()	Handle unfinished group comment (#...).
protected RegexSyntaxException	handleUnfinishedGroupQ()	Handle unfinished group with question mark (?.
protected RegexSyntaxException	handleUnfinishedRangeInClassSet()	Handle unfinished range in class set expression [a-].
protected RegexSyntaxException	handleUnmatchedLeftBracket()	Handle unmatched [.
protected void	handleUnmatchedRightBrace()	Handle unmatched }.
protected void	handleUnmatchedRightBracket()	Handle unmatched ].
protected int	parseCodePointInGroupName()	Parse the next codepoint in a group name and return it.
protected Token	parseCustomEscape(char c)	Parse any escape sequence starting with \ and the argument c.
protected int	parseCustomEscapeChar(char c, boolean inCharClass)	Parse an escape character sequence (inside character class, or other escapes have already been tried) starting with \ and the argument {code c}.
protected int	parseCustomEscapeCharFallback(int c, boolean inCharClass)	Parse an escape character sequence (inside character class, or other escapes have already been tried) starting with \ and the code point c.This method is called after all other means of parsing the escape sequence have been exhausted.
protected Token	parseCustomGroupBeginQ(char charAfterQuestionMark)	Parse group starting with (?.
protected Token	parseGroupLt()	Parse group starting with (<.
protected void	validatePOSIXCollationElement(String sequence)	Checks if the given string is a valid collation element.
protected void	validatePOSIXEquivalenceClass(String sequence)	Checks if the given string is a valid equivalence class.

Methods inherited from class com.oracle.truffle.regex.tregex.parser.RegexLexer

advance, advance, atEnd, consumeChar, consumingLookahead, consumingLookahead, consumingLookahead, count, count, countDecimalDigits, countFrom, countUpTo, curChar, findChars, finishSurrogatePair, getCompilationBuffer, getLastAtomPosition, getLastCharacterClassBeginPosition, getLastTokenPosition, getNamedCaptureGroups, getNumberOfParsedGroups, getSingleNamedGroupNumber, hasNamedCaptureGroups, hasNext, inCharacterClass, isAscii, isCurCharClassInverted, isDecimalDigit, isHexDigit, isOctalDigit, isPredefCharClass, literalChar, lookahead, lookahead, lookbehind, next, numberOfCaptureGroupsSoFar, parseCharClassAtomCodePoint, parseCharClassAtomPredefCharClass, parseClassSetExpression, parseGroupName, parseHex, parseIntSaturated, parseIntSaturated, parseOctal, parseUnicodeCharacterProperty, registerNamedCaptureGroup, retreat, syntaxError, totalNumberOfCaptureGroups

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

JSRegexLexer

public JSRegexLexer(RegexSource source,
 RegexFlags flags,
 CompilationBuffer compilationBuffer)

Method Details

featureEnabledIgnoreCase

protected boolean featureEnabledIgnoreCase()

Description copied from class: RegexLexer

Returns true if ignore-case mode is currently enabled.

Specified by:

featureEnabledIgnoreCase in class RegexLexer

featureEnabledAZPositionAssertions

protected boolean featureEnabledAZPositionAssertions()

Description copied from class: RegexLexer

Returns true if \A and \Z position assertions are supported.

Specified by:

featureEnabledAZPositionAssertions in class RegexLexer

featureEnabledZLowerCaseAssertion

protected boolean featureEnabledZLowerCaseAssertion()

Description copied from class: RegexLexer

Returns true if \z position assertion is supported.

Specified by:

featureEnabledZLowerCaseAssertion in class RegexLexer

featureEnabledBoundedQuantifierEmptyMin

protected boolean featureEnabledBoundedQuantifierEmptyMin()

Description copied from class: RegexLexer

Returns true if empty minimum values in bounded quantifiers (e.g. {,1}) are allowed and treated as zero.

Specified by:

featureEnabledBoundedQuantifierEmptyMin in class RegexLexer

featureEnabledPossessiveQuantifiers

protected boolean featureEnabledPossessiveQuantifiers()

Description copied from class: RegexLexer

Returns true if possessive quantifiers (+ suffix) are allowed.

Specified by:

featureEnabledPossessiveQuantifiers in class RegexLexer

featureEnabledCharClassFirstBracketIsLiteral

protected boolean featureEnabledCharClassFirstBracketIsLiteral()

Description copied from class: RegexLexer

Returns true if the first character in a character class must be interpreted as part of the character set, even if it is the closing bracket ']'.

Specified by:

featureEnabledCharClassFirstBracketIsLiteral in class RegexLexer

featureEnabledCCRangeWithPredefCharClass

protected boolean featureEnabledCCRangeWithPredefCharClass()

Description copied from class: RegexLexer

Try to parse ranges with pre-defined inner character classes, e.g. [\w-a].

Specified by:

featureEnabledCCRangeWithPredefCharClass in class RegexLexer

featureEnabledNestedCharClasses

protected boolean featureEnabledNestedCharClasses()

Description copied from class: RegexLexer

Returns true if nested character classes are supported. This is required for RegexLexer.featureEnabledPOSIXCharClasses() .

Specified by:

featureEnabledNestedCharClasses in class RegexLexer

featureEnabledPOSIXCharClasses

protected boolean featureEnabledPOSIXCharClasses()

Description copied from class: RegexLexer

Returns true if POSIX character classes, character equivalence classes, and the POSIX Collating Element Operator are supported. Requires RegexLexer.featureEnabledNestedCharClasses().

Specified by:

featureEnabledPOSIXCharClasses in class RegexLexer

featureEnabledForwardReferences

protected boolean featureEnabledForwardReferences()

Description copied from class: RegexLexer

Returns true if forward references are allowed.

Specified by:

featureEnabledForwardReferences in class RegexLexer

featureEnabledGroupComments

protected boolean featureEnabledGroupComments()

Description copied from class: RegexLexer

Returns true if group comments (e.g. (# ... )) are supported.

Specified by:

featureEnabledGroupComments in class RegexLexer

featureEnabledLineComments

protected boolean featureEnabledLineComments()

Description copied from class: RegexLexer

Returns true if line comments (e.g. # ... ) are supported.

Specified by:

featureEnabledLineComments in class RegexLexer

featureEnabledIgnoreWhiteSpace

protected boolean featureEnabledIgnoreWhiteSpace()

Description copied from class: RegexLexer

Returns true if white space in the pattern is ignored. This is relevant only if line comments are not supported.

Specified by:

featureEnabledIgnoreWhiteSpace in class RegexLexer

getWhitespace

protected TBitSet getWhitespace()

Description copied from class: RegexLexer

The set of codepoints to consider as whitespace in comments and "ignore white space" mode.

Specified by:

getWhitespace in class RegexLexer

featureEnabledOctalEscapes

protected boolean featureEnabledOctalEscapes()

Description copied from class: RegexLexer

Returns true if octal escapes (e.g. \012) are supported.

Specified by:

featureEnabledOctalEscapes in class RegexLexer

featureEnabledSpecialGroups

protected boolean featureEnabledSpecialGroups()

Description copied from class: RegexLexer

Returns true if any constructs that alter a capture group's function, such as non-capturing groups (?:) or look-around assertions (?=), are supported. If this flag is false, groups starting with a question mark (? do not have any special meaning.

Specified by:

featureEnabledSpecialGroups in class RegexLexer

featureEnabledUnicodePropertyEscapes

protected boolean featureEnabledUnicodePropertyEscapes()

Description copied from class: RegexLexer

Returns true if unicode property escapes (e.g. \p{...}) are supported.

Specified by:

featureEnabledUnicodePropertyEscapes in class RegexLexer

featureEnabledClassSetExpressions

protected boolean featureEnabledClassSetExpressions()

Description copied from class: RegexLexer

Returns true if class set expressions (e.g. [[\w\q{abc|xyz}]--[a-cx-z]]) are supported.

Specified by:

featureEnabledClassSetExpressions in class RegexLexer

caseFoldUnfold

protected void caseFoldUnfold(CodePointSetAccumulator charClass)

Description copied from class: RegexLexer

Updates a character set by expanding it to the set of characters that case fold to the same characters as the characters currently in the set. This is done by case folding the set and then "unfolding" it by finding all inverse case fold mappings.

Specified by:

caseFoldUnfold in class RegexLexer

complementClassSet

protected CodePointSet complementClassSet(CodePointSet codePointSet)

Description copied from class: RegexLexer

Returns the complement of a class set element. In ECMAScript, this behavior can vary with the flags.

Specified by:

complementClassSet in class RegexLexer

caseFoldClassSetAtom

protected ClassSetContents caseFoldClassSetAtom(ClassSetContents classSetContents)

Description copied from class: RegexLexer

Case folds an atom in a class set expression. This maps the elements of the expression into their case folded variant.

Specified by:

caseFoldClassSetAtom in class RegexLexer

getDotCodePointSet

protected CodePointSet getDotCodePointSet()

Description copied from class: RegexLexer

Returns the code point set represented by the dot operator.

Specified by:

getDotCodePointSet in class RegexLexer

getIdContinue

protected CodePointSet getIdContinue()

Description copied from class: RegexLexer

Returns the set of all codepoints a group identifier may continue with.

Specified by:

getIdContinue in class RegexLexer

getIdStart

protected CodePointSet getIdStart()

Description copied from class: RegexLexer

Returns the set of all codepoints a group identifier may begin with.

Specified by:

getIdStart in class RegexLexer

getMaxBackReferenceDigits

protected int getMaxBackReferenceDigits()

Description copied from class: RegexLexer

Returns the maximum number of digits to parse when parsing a back-reference.

Specified by:

getMaxBackReferenceDigits in class RegexLexer

getPredefinedCharClass

protected CodePointSet getPredefinedCharClass(char c)

Description copied from class: RegexLexer

Returns the CodePointSet associated with the given predefined character class (e.g. \d).

Note that the CodePointSet returned by this function has already been case-folded and negated.

Specified by:

getPredefinedCharClass in class RegexLexer

checkClassSetCharacter

protected void checkClassSetCharacter(int codePoint)
                               throws RegexSyntaxException

Description copied from class: RegexLexer

Checks whether codepoint can appear as an unescaped literal class set character.

Specified by:

checkClassSetCharacter in class RegexLexer

Throws:

RegexSyntaxException

boundedQuantifierMaxValue

protected long boundedQuantifierMaxValue()

Description copied from class: RegexLexer

The maximum value allowed while parsing bounded quantifiers. Larger values will cause a call to RegexLexer.handleBoundedQuantifierOverflow(long, long).

Specified by:

boundedQuantifierMaxValue in class RegexLexer

handleBoundedQuantifierOutOfOrder

protected RegexSyntaxException handleBoundedQuantifierOutOfOrder()

Description copied from class: RegexLexer

Handle {2,1}.

Specified by:

handleBoundedQuantifierOutOfOrder in class RegexLexer

handleBoundedQuantifierEmptyOrMissingMin

protected Token handleBoundedQuantifierEmptyOrMissingMin()
                                                  throws RegexSyntaxException

Description copied from class: RegexLexer

Handle missing } or minimum value in bounded quantifiers.

Specified by:

handleBoundedQuantifierEmptyOrMissingMin in class RegexLexer

Throws:

RegexSyntaxException

handleBoundedQuantifierInvalidCharacter

protected Token handleBoundedQuantifierInvalidCharacter()

Description copied from class: RegexLexer

Handle non-digit characters in bounded quantifiers.

Specified by:

handleBoundedQuantifierInvalidCharacter in class RegexLexer

handleBoundedQuantifierOverflow

protected Token handleBoundedQuantifierOverflow(long min,
 long max)

Description copied from class: RegexLexer

Handle integer overflows in quantifier bounds, e.g. {2147483649}. If this method returns a non-null value, it will be returned instead of the current quantifier.

Specified by:

handleBoundedQuantifierOverflow in class RegexLexer

handleBoundedQuantifierOverflowMin

protected Token handleBoundedQuantifierOverflowMin(long min,
 long max)

Description copied from class: RegexLexer

Handle integer overflows in quantifier bounds, e.g. {2147483649}. If this method returns a non-null value, it will be returned instead of the current quantifier. This method is called when no explicit max value is present.

Specified by:

handleBoundedQuantifierOverflowMin in class RegexLexer

handleCCRangeOutOfOrder

protected RegexSyntaxException handleCCRangeOutOfOrder(int startPos)

Description copied from class: RegexLexer

Handle out of order character class range elements, e.g. [b-a].

Specified by:

handleCCRangeOutOfOrder in class RegexLexer

handleCCRangeWithPredefCharClass

protected void handleCCRangeWithPredefCharClass(int startPos,
 ClassSetContents firstAtom,
 ClassSetContents secondAtom)

Description copied from class: RegexLexer

Handle non-codepoint character class range elements, e.g. [\w-a].

Specified by:

handleCCRangeWithPredefCharClass in class RegexLexer

getPOSIXCharClass

protected CodePointSet getPOSIXCharClass(String name)

Description copied from class: RegexLexer

Returns the POSIX character class associated to the given name.

Specified by:

getPOSIXCharClass in class RegexLexer

validatePOSIXCollationElement

protected void validatePOSIXCollationElement(String sequence)

Description copied from class: RegexLexer

Checks if the given string is a valid collation element.

Specified by:

validatePOSIXCollationElement in class RegexLexer

validatePOSIXEquivalenceClass

protected void validatePOSIXEquivalenceClass(String sequence)

Description copied from class: RegexLexer

Checks if the given string is a valid equivalence class.

Specified by:

validatePOSIXEquivalenceClass in class RegexLexer

handleComplementOfStringSet

protected RegexSyntaxException handleComplementOfStringSet()

Description copied from class: RegexLexer

Handle complement of class set expressions containing strings, e.g. [^\q{abc}] or \P{RGI_Emoji}.

Specified by:

handleComplementOfStringSet in class RegexLexer

handleGroupRedefinition

protected void handleGroupRedefinition(String name,
 int newId,
 int oldId)

Specified by:

handleGroupRedefinition in class RegexLexer

handleIncompleteEscapeX

protected void handleIncompleteEscapeX()

Description copied from class: RegexLexer

Handle incomplete hex escapes, e.g. \x1.

Specified by:

handleIncompleteEscapeX in class RegexLexer

handleInvalidBackReference

protected Token handleInvalidBackReference(int reference)

Description copied from class: RegexLexer

Handle group references to non-existent groups.

Specified by:

handleInvalidBackReference in class RegexLexer

handleInvalidCharInCharClass

protected RegexSyntaxException handleInvalidCharInCharClass()

Specified by:

handleInvalidCharInCharClass in class RegexLexer

handleInvalidGroupBeginQ

protected RegexSyntaxException handleInvalidGroupBeginQ()

Description copied from class: RegexLexer

Handle groups starting with (? and invalid next char.

Specified by:

handleInvalidGroupBeginQ in class RegexLexer

handleMixedClassSetOperators

protected RegexSyntaxException handleMixedClassSetOperators(RegexLexer.ClassSetOperator leftOperator,
 RegexLexer.ClassSetOperator rightOperator)

Description copied from class: RegexLexer

Handle class set expressions with mixed set operators in the same nested set.

Specified by:

handleMixedClassSetOperators in class RegexLexer

handleMissingClassSetOperand

protected RegexSyntaxException handleMissingClassSetOperand(RegexLexer.ClassSetOperator operator)

Description copied from class: RegexLexer

Handle missing operands in class set expressions, e.g. [\s&&] or [\w--].

Specified by:

handleMissingClassSetOperand in class RegexLexer

handleOctalOutOfRange

protected void handleOctalOutOfRange()

Description copied from class: RegexLexer

Handle octal values larger than 255.

Specified by:

handleOctalOutOfRange in class RegexLexer

handleRangeAsClassSetOperand

protected RegexSyntaxException handleRangeAsClassSetOperand(RegexLexer.ClassSetOperator operator)

Description copied from class: RegexLexer

Handle character ranges as operands in class set expressions with operators other than union.

Specified by:

handleRangeAsClassSetOperand in class RegexLexer

handleUnfinishedEscape

protected void handleUnfinishedEscape()

Description copied from class: RegexLexer

Handle unfinished escape (e.g. \).

Specified by:

handleUnfinishedEscape in class RegexLexer

handleUnfinishedGroupComment

protected void handleUnfinishedGroupComment()

Description copied from class: RegexLexer

Handle unfinished group comment (#...).

Specified by:

handleUnfinishedGroupComment in class RegexLexer

handleUnfinishedGroupQ

protected RegexSyntaxException handleUnfinishedGroupQ()

Description copied from class: RegexLexer

Handle unfinished group with question mark (?.

Specified by:

handleUnfinishedGroupQ in class RegexLexer

handleUnfinishedRangeInClassSet

protected RegexSyntaxException handleUnfinishedRangeInClassSet()

Description copied from class: RegexLexer

Handle unfinished range in class set expression [a-].

Specified by:

handleUnfinishedRangeInClassSet in class RegexLexer

handleUnmatchedRightBrace

protected void handleUnmatchedRightBrace()

Description copied from class: RegexLexer

Handle unmatched }.

Specified by:

handleUnmatchedRightBrace in class RegexLexer

handleUnmatchedLeftBracket

protected RegexSyntaxException handleUnmatchedLeftBracket()

Description copied from class: RegexLexer

Handle unmatched [.

Specified by:

handleUnmatchedLeftBracket in class RegexLexer

handleUnmatchedRightBracket

protected void handleUnmatchedRightBracket()

Description copied from class: RegexLexer

Handle unmatched ].

Specified by:

handleUnmatchedRightBracket in class RegexLexer

parseCodePointInGroupName

protected int parseCodePointInGroupName()
                                 throws RegexSyntaxException

Description copied from class: RegexLexer

Parse the next codepoint in a group name and return it.

Specified by:

parseCodePointInGroupName in class RegexLexer

Throws:

RegexSyntaxException

parseCustomEscape

protected Token parseCustomEscape(char c)

Description copied from class: RegexLexer

Parse any escape sequence starting with \ and the argument c.

Specified by:

parseCustomEscape in class RegexLexer

parseCustomEscapeChar

protected int parseCustomEscapeChar(char c,
 boolean inCharClass)

Description copied from class: RegexLexer

Parse an escape character sequence (inside character class, or other escapes have already been tried) starting with \ and the argument {code c}.

Specified by:

parseCustomEscapeChar in class RegexLexer

parseCustomEscapeCharFallback

protected int parseCustomEscapeCharFallback(int c,
 boolean inCharClass)

Description copied from class: RegexLexer

Parse an escape character sequence (inside character class, or other escapes have already been tried) starting with \ and the code point c.This method is called after all other means of parsing the escape sequence have been exhausted.

Specified by:

parseCustomEscapeCharFallback in class RegexLexer

parseCustomGroupBeginQ

protected Token parseCustomGroupBeginQ(char charAfterQuestionMark)

Description copied from class: RegexLexer

Parse group starting with (?.

Specified by:

parseCustomGroupBeginQ in class RegexLexer

parseGroupLt

protected Token parseGroupLt()

Description copied from class: RegexLexer

Parse group starting with (<.

Specified by:

parseGroupLt in class RegexLexer