Class RESyntax

public static final int RE_BACKSLASH_ESCAPE_IN_LISTS

Syntax bit. Backslash is an escape character in lists.

Field Value:

0

public static final int RE_BK_PLUS_QM

Syntax bit. Use \? instead of ? and \+ instead of +.

Field Value:

1

public static final int RE_CHAR_CLASSES

Syntax bit. POSIX character classes ([:...:]) in lists are allowed.

Field Value:

2

public static final int RE_CHAR_CLASS_ESCAPES

Syntax bit. Allow character class escapes (\d, \D, \s, \S, \w, \W).

Field Value:

19

public static final int RE_CHAR_CLASS_ESC_IN_LISTS

Syntax bit. Allow character class escapes within lists, as in Perl5.

Field Value:

24

public static final int RE_COMMENTS

Syntax bit. Allow embedded comments, (?#comment), as in Perl5.

Field Value:

23

public static final int RE_CONTEXT_INDEP_ANCHORS

Syntax bit. ^ and $ are special everywhere. Not implemented.

Field Value:

3

public static final int RE_CONTEXT_INDEP_OPS

Syntax bit. Repetition operators are only special in valid positions. Not implemented.

Field Value:

4

public static final int RE_CONTEXT_INVALID_OPS

Syntax bit. Repetition and alternation operators are invalid at start and end of pattern and other places. Not implemented.

Field Value:

5

public static final int RE_DOT_NEWLINE

Syntax bit. Match-any-character operator (.) matches a newline.

Field Value:

6

public static final int RE_DOT_NOT_NULL

Syntax bit. Match-any-character operator (.) does not match a null.

Field Value:

7

public static final int RE_EMBEDDED_FLAGS

Syntax bit. Allow embedded flags, (?is-x), as in Perl5.

Field Value:

26

public static final int RE_HAT_LISTS_NOT_NEWLINE

Syntax bit. Not implemented.

Field Value:

17

public static final int RE_HEX_CHAR

Syntax bit. Allow hex char (\x1b), as in Perl5.

Field Value:

28

public static final int RE_INTERVALS

Syntax bit. Intervals ({x}, {x,}, {x,y}) are allowed.

Field Value:

8

public static final int RE_LIMITED_OPS

Syntax bit. No alternation (|), match one-or-more (+), or match zero-or-one (?) operators.

Field Value:

9

public static final int RE_LOOKAHEAD

Syntax bit. Allow use of (?=xxx) and (?!xxx) apply the subexpression to the text following the current position without consuming that text.

Field Value:

21

public static final int RE_NAMED_PROPERTY

Syntax bit. Allow named property (\p{P}, \P{p}), as in Perl5.

Field Value:

30

public static final int RE_NESTED_CHARCLASS

Syntax bit. Allow nested characterclass ([a-z&&[^p-r]]), as in Java 1.4.

Field Value:

31

public static final int RE_NEWLINE_ALT

Syntax bit. Newline is an alternation operator.

Field Value:

10

public static final int RE_NO_BK_BRACES

Syntax bit. Intervals use { } instead of \{ \}

Field Value:

11

public static final int RE_NO_BK_PARENS

Syntax bit. Grouping uses ( ) instead of \( \).

Field Value:

12

public static final int RE_NO_BK_REFS

Syntax bit. Backreferences not allowed.

Field Value:

13

public static final int RE_NO_BK_VBAR

Syntax bit. Alternation uses | instead of \|

Field Value:

14

public static final int RE_NO_EMPTY_RANGES

Syntax bit. Not implemented.

Field Value:

15

public static final int RE_OCTAL_CHAR

Syntax bit. Allow octal char (\0377), as in Perl5.

Field Value:

27

public static final int RE_POSSESSIVE_OPS

Syntax bit. Possessive matching is allowed (++, *+, ?+, {x,y}+).

Field Value:

25

public static final int RE_PURE_GROUPING

Syntax bit. Allow use of (?:xxx) grouping (subexpression is not saved).

Field Value:

20

public static final int RE_STINGY_OPS

Syntax bit. Stingy matching is allowed (+?, *?, ??, {x,y}?).

Field Value:

18

public static final int RE_STRING_ANCHORS

Syntax bit. Allow beginning- and end-of-string anchors (\A, \Z).

Field Value:

22

public static final RESyntax RE_SYNTAX_AWK

Predefined syntax. Emulates regular expression support in the awk utility.

public static final RESyntax RE_SYNTAX_ED

Predefined syntax. Emulates regular expression support in the ed utility.

public static final RESyntax RE_SYNTAX_EGREP

Predefined syntax. Emulates regular expression support in the egrep utility.

public static final RESyntax RE_SYNTAX_EMACS

Predefined syntax. Emulates regular expression support in the GNU Emacs editor.

public static final RESyntax RE_SYNTAX_GREP

Predefined syntax. Emulates regular expression support in the grep utility.

public static final RESyntax RE_SYNTAX_JAVA_1_4

Predefined syntax. Emulates regular expression support in Java 1.4's java.util.regex package.

public static final RESyntax RE_SYNTAX_PERL4

Predefined syntax. Emulates regular expression support in Larry Wall's perl, version 4,

public static final RESyntax RE_SYNTAX_PERL4_S

Predefined syntax. Emulates regular expression support in Larry Wall's perl, version 4, using single line mode (/s modifier).

public static final RESyntax RE_SYNTAX_PERL5

Predefined syntax. Emulates regular expression support in Larry Wall's perl, version 5.

public static final RESyntax RE_SYNTAX_PERL5_S

Predefined syntax. Emulates regular expression support in Larry Wall's perl, version 5, using single line mode (/s modifier).

public static final RESyntax RE_SYNTAX_POSIX_AWK

Predefined syntax. Emulates regular expression support in the POSIX awk specification.

public static final RESyntax RE_SYNTAX_POSIX_BASIC

Predefined syntax. Emulates POSIX basic regular expression support.

public static final RESyntax RE_SYNTAX_POSIX_EGREP

Predefined syntax. Emulates regular expression support in the POSIX egrep specification.

public static final RESyntax RE_SYNTAX_POSIX_EXTENDED

Predefined syntax. Emulates POSIX extended regular expression support.

public static final RESyntax RE_SYNTAX_POSIX_MINIMAL_BASIC

Predefined syntax. Emulates POSIX basic minimal regular expressions.

public static final RESyntax RE_SYNTAX_POSIX_MINIMAL_EXTENDED

Predefined syntax. Emulates POSIX extended minimal regular expressions.

public static final RESyntax RE_SYNTAX_SED

Predefined syntax. Emulates regular expression support in the sed utility.

public static final int RE_UNICODE_CHAR

Syntax bit. Allow Unicode char (\u1234), as in Java 1.4.

Field Value:

29

public static final int RE_UNMATCHED_RIGHT_PAREN_ORD

Syntax bit. An unmatched right parenthesis (')' or '\)', depending on RE_NO_BK_PARENS) will throw an exception when compiling.

Field Value:

16

public RESyntax()

Construct a new syntax object with all bits turned off. This is equivalent to RE_SYNTAX_EMACS.

public RESyntax(RESyntax other)

Construct a new syntax object with all bits set the same as the other syntax.

public RESyntax clear(int index)

Clear a given bit in this syntax.

Parameters:

index - the constant (RESyntax.RE_xxx) bit to clear.

Returns:

a reference to this object for easy chaining.

public boolean get(int index)

Check if a given bit is set in this syntax.

public String getLineSeparator()

Returns the currently active line separator string. The default is the platform-dependent system property "line.separator".

public RESyntax makeFinal()

Called internally when constructing predefined syntaxes so their interpretation cannot vary. Conceivably useful for your syntaxes as well. Causes IllegalAccessError to be thrown if any attempt to modify the syntax is made.

Returns:

this object for convenient chaining

public RESyntax set(int index)

Set a given bit in this syntax.

Parameters:

index - the constant (RESyntax.RE_xxx) bit to set.

Returns:

a reference to this object for easy chaining.

public RESyntax setLineSeparator(String aSeparator)

Changes the line separator string for regular expressions created using this RESyntax. The default separator is the value returned by the system property "line.separator", which should be correct when reading platform-specific files from a filesystem. However, many programs may collect input from sources where the line separator is differently specified (for example, in the applet environment, the text box widget interprets line breaks as single-character newlines, regardless of the host platform. Note that setting the line separator to a character or characters that have specific meaning within the current syntax can cause unexpected chronosynclastic infundibula.

Returns:

this object for convenient chaining