Class Utils

java.lang.Object

com.google.re2j.Utils

abstract class Utils
extends Object

Various constants and helper utilities.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final int	EMPTY_ALL
(package private) static final int	EMPTY_BEGIN_LINE	/ EMPTY_* flags
(package private) static final int	EMPTY_BEGIN_TEXT
(package private) static final int	EMPTY_END_LINE
(package private) static final int	EMPTY_END_TEXT
(package private) static final int[]	EMPTY_INTS
(package private) static final int	EMPTY_NO_WORD_BOUNDARY
(package private) static final int	EMPTY_WORD_BOUNDARY
private static final String	METACHARACTERS

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Utils()

Method Summary

Modifier and Type	Method	Description
(package private) static int	emptyOpContext(int r1, int r2)
(package private) static void	escapeRune(StringBuilder out, int rune)
(package private) static int	indexOf(byte[] source, byte[] target, int fromIndex)
(package private) static boolean	isalnum(int c)
(package private) static boolean	isWordRune(int r)
(package private) static String	runeToString(int r)
(package private) static int[]	stringToRunes(String str)
(package private) static byte[]	subarray(byte[] array, int start, int end)
(package private) static int[]	subarray(int[] array, int start, int end)
(package private) static int	unhex(int c)

Methods inherited from class Object

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

Field Details

EMPTY_INTS

static final int[] EMPTY_INTS

METACHARACTERS

private static final String METACHARACTERS

See Also:

• Constant Field Values

EMPTY_BEGIN_LINE

static final int EMPTY_BEGIN_LINE

/ EMPTY_* flags

See Also:

• Constant Field Values

EMPTY_END_LINE

static final int EMPTY_END_LINE

See Also:

• Constant Field Values

EMPTY_BEGIN_TEXT

static final int EMPTY_BEGIN_TEXT

See Also:

• Constant Field Values

EMPTY_END_TEXT

static final int EMPTY_END_TEXT

See Also:

• Constant Field Values

EMPTY_WORD_BOUNDARY

static final int EMPTY_WORD_BOUNDARY

See Also:

• Constant Field Values

EMPTY_NO_WORD_BOUNDARY

static final int EMPTY_NO_WORD_BOUNDARY

See Also:

• Constant Field Values

EMPTY_ALL

static final int EMPTY_ALL

See Also:

• Constant Field Values

Constructor Details

Utils

private Utils()

Method Details

isalnum

static boolean isalnum(int c)

unhex

static int unhex(int c)

escapeRune

static void escapeRune(StringBuilder out,
 int rune)

stringToRunes

static int[] stringToRunes(String str)

runeToString

static String runeToString(int r)

subarray

static int[] subarray(int[] array,
 int start,
 int end)

subarray

static byte[] subarray(byte[] array,
 int start,
 int end)

indexOf

static int indexOf(byte[] source,
 byte[] target,
 int fromIndex)

isWordRune

static boolean isWordRune(int r)

emptyOpContext

static int emptyOpContext(int r1,
 int r2)