net.sf.saxon.functions.regex
Class RegexTranslator

java.lang.Object
  net.sf.saxon.functions.regex.RegexTranslator

Direct Known Subclasses:

JDK15RegexTranslator

public abstract class RegexTranslator
extends Object

Abstract superclass for the various regex translators, which differ according to the target platform.

Nested Class Summary

static class

RegexTranslator.Range A Range represents a range of consecutive Unicode codepoints

Field Summary

static int	ALL
protected IntHashSet	captures
protected boolean	caseBlind
protected char	curChar
protected int	currentCapture
protected boolean	eos
protected boolean	expandComplementBlockNames
protected boolean	ignoreWhitespace
protected boolean	inCharClassExpr
protected boolean	isXPath
protected boolean	isXPath30
protected int	length
static int	NONE
static String	NOT_ALLOWED_CLASS
protected int	pos
protected CharSequence	regExp
protected FastStringBuffer	result
static int	SOME
static String	SURROGATES1_CLASS
static String	SURROGATES2_CLASS
protected List<RegexSyntaxException>	warnings
protected int	xmlVersion
protected int	xsdVersion

Constructor Summary

RegexTranslator()

Method Summary

protected int	absorbSurrogatePair()
protected void	advance()
protected void	copyCurChar()
protected void	expect(char c)
protected static String	highSurrogateRanges(List<RegexTranslator.Range> ranges)
protected static boolean	isAsciiAlnum(char c)
protected static boolean	isJavaMetaChar(int c)
protected static String	lowSurrogateRanges(List<RegexTranslator.Range> ranges)
protected RegexSyntaxException	makeException(String key)
protected RegexSyntaxException	makeException(String key, String arg)
protected CharSequence	parseQuantExact()
protected void	recede()
protected abstract boolean	translateAtom() If what follows is an Atom, translate it and return true; otherwise return false
protected void	translateBranch()
protected void	translateQuantifier()
protected void	translateQuantity()
protected void	translateRegExp()
protected void	translateTop()

Methods inherited from class java.lang.Object

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

Field Detail

regExp

protected CharSequence regExp

xmlVersion

protected int xmlVersion

xsdVersion

protected int xsdVersion

isXPath

protected boolean isXPath

isXPath30

protected boolean isXPath30

ignoreWhitespace

protected boolean ignoreWhitespace

inCharClassExpr

protected boolean inCharClassExpr

caseBlind

protected boolean caseBlind

expandComplementBlockNames

protected boolean expandComplementBlockNames

pos

protected int pos

length

protected int length

curChar

protected char curChar

eos

protected boolean eos

currentCapture

protected int currentCapture

captures

protected IntHashSet captures

result

protected final FastStringBuffer result

warnings

protected List<RegexSyntaxException> warnings

NONE

public static final int NONE

See Also:

Constant Field Values

SOME

public static final int SOME

See Also:

Constant Field Values

ALL

public static final int ALL

See Also:

Constant Field Values

SURROGATES1_CLASS

public static final String SURROGATES1_CLASS

See Also:

Constant Field Values

SURROGATES2_CLASS

public static final String SURROGATES2_CLASS

See Also:

Constant Field Values

NOT_ALLOWED_CLASS

public static final String NOT_ALLOWED_CLASS

See Also:

Constant Field Values

Constructor Detail

RegexTranslator

public RegexTranslator()

Method Detail

translateTop

protected void translateTop()
                     throws RegexSyntaxException

Throws:

RegexSyntaxException

translateRegExp

protected void translateRegExp()
                        throws RegexSyntaxException

Throws:

RegexSyntaxException

translateBranch

protected void translateBranch()
                        throws RegexSyntaxException

Throws:

RegexSyntaxException

translateAtom

protected abstract boolean translateAtom()
                                  throws RegexSyntaxException

If what follows is an Atom, translate it and return true; otherwise return false

Returns:

true if we found an atom

Throws:

RegexSyntaxException - if the regex syntax is incorrect

translateQuantifier

protected void translateQuantifier()
                            throws RegexSyntaxException

Throws:

RegexSyntaxException

translateQuantity

protected void translateQuantity()
                          throws RegexSyntaxException

Throws:

RegexSyntaxException

parseQuantExact

protected CharSequence parseQuantExact()
                                throws RegexSyntaxException

Throws:

RegexSyntaxException

copyCurChar

protected void copyCurChar()

advance

protected void advance()

absorbSurrogatePair

protected int absorbSurrogatePair()
                           throws RegexSyntaxException

Throws:

RegexSyntaxException

recede

protected void recede()

expect

protected void expect(char c)
               throws RegexSyntaxException

Throws:

RegexSyntaxException

makeException

protected RegexSyntaxException makeException(String key)

makeException

protected RegexSyntaxException makeException(String key,
                                             String arg)

isJavaMetaChar

protected static boolean isJavaMetaChar(int c)

highSurrogateRanges

protected static String highSurrogateRanges(List<RegexTranslator.Range> ranges)

lowSurrogateRanges

protected static String lowSurrogateRanges(List<RegexTranslator.Range> ranges)

isAsciiAlnum

protected static boolean isAsciiAlnum(char c)