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com.memoire.re
Class RESyntax  

java.lang.Object
  com.memoire.re.RESyntax

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public class RESyntax

extends java.lang.Object

An RESyntax specifies the way a regular expression will be compiled. This class provides a number of predefined useful constants for emulating popular regular expression syntaxes. Additionally the user may construct his or her own syntax, using any combination of the syntax bit constants. The syntax is an optional argument to any of the matching methods on class RE.

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Field Summary
private static int	BIT_TOTAL
private  java.util.BitSet	bits
static int	RE_BACKSLASH_ESCAPE_IN_LISTS           Syntax bit.
static int	RE_BK_PLUS_QM           Syntax bit.
static int	RE_CHAR_CLASS_ESC_IN_LISTS           Syntax bit.
static int	RE_CHAR_CLASS_ESCAPES           Syntax bit.
static int	RE_CHAR_CLASSES           Syntax bit.
static int	RE_COMMENTS           Syntax bit.
static int	RE_CONTEXT_INDEP_ANCHORS           Syntax bit.
static int	RE_CONTEXT_INDEP_OPS           Syntax bit.
static int	RE_CONTEXT_INVALID_OPS           Syntax bit.
static int	RE_DOT_NEWLINE           Syntax bit.
static int	RE_DOT_NOT_NULL           Syntax bit.
static int	RE_HAT_LISTS_NOT_NEWLINE           Syntax bit.
static int	RE_INTERVALS           Syntax bit.
static int	RE_LIMITED_OPS           Syntax bit.
static int	RE_LOOKAHEAD           Syntax bit.
static int	RE_NEWLINE_ALT           Syntax bit.
static int	RE_NO_BK_BRACES           Syntax bit.
static int	RE_NO_BK_PARENS           Syntax bit.
static int	RE_NO_BK_REFS           Syntax bit.
static int	RE_NO_BK_VBAR           Syntax bit.
static int	RE_NO_EMPTY_RANGES           Syntax bit.
static int	RE_PURE_GROUPING           Syntax bit.
static int	RE_STINGY_OPS           Syntax bit.
static int	RE_STRING_ANCHORS           Syntax bit.
static RESyntax	RE_SYNTAX_AWK           Predefined syntax.
static RESyntax	RE_SYNTAX_ED           Predefined syntax.
static RESyntax	RE_SYNTAX_EGREP           Predefined syntax.
static RESyntax	RE_SYNTAX_EMACS           Predefined syntax.
static RESyntax	RE_SYNTAX_GREP           Predefined syntax.
static RESyntax	RE_SYNTAX_PERL4           Predefined syntax.
static RESyntax	RE_SYNTAX_PERL4_S           Predefined syntax.
static RESyntax	RE_SYNTAX_PERL5           Predefined syntax.
static RESyntax	RE_SYNTAX_PERL5_S           Predefined syntax.
static RESyntax	RE_SYNTAX_POSIX_AWK           Predefined syntax.
static RESyntax	RE_SYNTAX_POSIX_BASIC           Predefined syntax.
static RESyntax	RE_SYNTAX_POSIX_EGREP           Predefined syntax.
static RESyntax	RE_SYNTAX_POSIX_EXTENDED           Predefined syntax.
static RESyntax	RE_SYNTAX_POSIX_MINIMAL_BASIC           Predefined syntax.
static RESyntax	RE_SYNTAX_POSIX_MINIMAL_EXTENDED           Predefined syntax.
static RESyntax	RE_SYNTAX_SED           Predefined syntax.
static int	RE_UNMATCHED_RIGHT_PAREN_ORD           Syntax bit.

 

Constructor Summary

RESyntax()           Construct a new syntax object with all bits turned off.

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

 

Method Summary
boolean	get(int index)           Check if a given bit is set in this syntax.
RESyntax	set(int index)           Set a given bit in this syntax.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

bits

private java.util.BitSet bits

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RE_BACKSLASH_ESCAPE_IN_LISTS

public static final int RE_BACKSLASH_ESCAPE_IN_LISTS

Syntax bit. Backslash is an escape character in lists.

See Also:

Constant Field Values

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RE_BK_PLUS_QM

public static final int RE_BK_PLUS_QM

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

See Also:

Constant Field Values

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RE_CHAR_CLASSES

public static final int RE_CHAR_CLASSES

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

See Also:

Constant Field Values

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RE_CONTEXT_INDEP_ANCHORS

public static final int RE_CONTEXT_INDEP_ANCHORS

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

See Also:

Constant Field Values

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RE_CONTEXT_INDEP_OPS

public static final int RE_CONTEXT_INDEP_OPS

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

See Also:

Constant Field Values

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RE_CONTEXT_INVALID_OPS

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.

See Also:

Constant Field Values

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RE_DOT_NEWLINE

public static final int RE_DOT_NEWLINE

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

See Also:

Constant Field Values

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RE_DOT_NOT_NULL

public static final int RE_DOT_NOT_NULL

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

See Also:

Constant Field Values

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RE_INTERVALS

public static final int RE_INTERVALS

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

See Also:

Constant Field Values

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RE_LIMITED_OPS

public static final int RE_LIMITED_OPS

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

See Also:

Constant Field Values

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RE_NEWLINE_ALT

public static final int RE_NEWLINE_ALT

Syntax bit. Newline is an alternation operator.

See Also:

Constant Field Values

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RE_NO_BK_BRACES

public static final int RE_NO_BK_BRACES

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

See Also:

Constant Field Values

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RE_NO_BK_PARENS

public static final int RE_NO_BK_PARENS

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

See Also:

Constant Field Values

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RE_NO_BK_REFS

public static final int RE_NO_BK_REFS

Syntax bit. Backreferences not allowed.

See Also:

Constant Field Values

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RE_NO_BK_VBAR

public static final int RE_NO_BK_VBAR

Syntax bit. Alternation uses | instead of \|

See Also:

Constant Field Values

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RE_NO_EMPTY_RANGES

public static final int RE_NO_EMPTY_RANGES

Syntax bit. Not implemented.

See Also:

Constant Field Values

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RE_UNMATCHED_RIGHT_PAREN_ORD

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.

See Also:

Constant Field Values

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RE_HAT_LISTS_NOT_NEWLINE

public static final int RE_HAT_LISTS_NOT_NEWLINE

Syntax bit. Not implemented.

See Also:

Constant Field Values

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RE_STINGY_OPS

public static final int RE_STINGY_OPS

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

See Also:

Constant Field Values

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RE_CHAR_CLASS_ESCAPES

public static final int RE_CHAR_CLASS_ESCAPES

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

See Also:

Constant Field Values

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RE_PURE_GROUPING

public static final int RE_PURE_GROUPING

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

See Also:

Constant Field Values

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RE_LOOKAHEAD

public static final int RE_LOOKAHEAD

Syntax bit. Not implemented.

See Also:

Constant Field Values

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RE_STRING_ANCHORS

public static final int RE_STRING_ANCHORS

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

See Also:

Constant Field Values

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RE_COMMENTS

public static final int RE_COMMENTS

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

See Also:

Constant Field Values

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RE_CHAR_CLASS_ESC_IN_LISTS

public static final int RE_CHAR_CLASS_ESC_IN_LISTS

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

See Also:

Constant Field Values

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BIT_TOTAL

private static final int BIT_TOTAL

See Also:

Constant Field Values

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RE_SYNTAX_AWK

public static RESyntax RE_SYNTAX_AWK

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

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RE_SYNTAX_ED

public static RESyntax RE_SYNTAX_ED

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

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RE_SYNTAX_EGREP

public static RESyntax RE_SYNTAX_EGREP

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

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RE_SYNTAX_EMACS

public static RESyntax RE_SYNTAX_EMACS

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

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RE_SYNTAX_GREP

public static RESyntax RE_SYNTAX_GREP

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

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RE_SYNTAX_POSIX_AWK

public static RESyntax RE_SYNTAX_POSIX_AWK

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

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RE_SYNTAX_POSIX_BASIC

public static RESyntax RE_SYNTAX_POSIX_BASIC

Predefined syntax. Emulates POSIX basic regular expression support.

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RE_SYNTAX_POSIX_EGREP

public static RESyntax RE_SYNTAX_POSIX_EGREP

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

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RE_SYNTAX_POSIX_EXTENDED

public static RESyntax RE_SYNTAX_POSIX_EXTENDED

Predefined syntax. Emulates POSIX extended regular expression support.

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RE_SYNTAX_POSIX_MINIMAL_BASIC

public static RESyntax RE_SYNTAX_POSIX_MINIMAL_BASIC

Predefined syntax. Emulates POSIX basic minimal regular expressions.

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RE_SYNTAX_POSIX_MINIMAL_EXTENDED

public static RESyntax RE_SYNTAX_POSIX_MINIMAL_EXTENDED

Predefined syntax. Emulates POSIX extended minimal regular expressions.

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RE_SYNTAX_SED

public static RESyntax RE_SYNTAX_SED

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

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RE_SYNTAX_PERL4

public static RESyntax RE_SYNTAX_PERL4

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

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RE_SYNTAX_PERL4_S

public static RESyntax RE_SYNTAX_PERL4_S

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

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RE_SYNTAX_PERL5

public static RESyntax RE_SYNTAX_PERL5

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

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RE_SYNTAX_PERL5_S

public static RESyntax RE_SYNTAX_PERL5_S

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

Constructor Detail

RESyntax

public RESyntax()

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

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RESyntax

public RESyntax(RESyntax other)

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

Method Detail

get

public boolean get(int index)

Check if a given bit is set in this syntax.

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set

public RESyntax set(int index)

Set a given bit in this syntax. Returns a reference to this syntax for easy chaining.

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> com >> memoire >> [ re overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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