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Java Source Code / Java Documentation » IDE » J » gnu.regexp   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    gnu.regexp.RESyntax RESyntax final public class RESyntax implements Serializable(Code) 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. author:    Wes Biggs Field Summary final static  String DEFAULT_LINE_SEPARATOR      final public static  int RE_BACKSLASH_ESCAPE_IN_LISTS      Syntax bit. final public static  int RE_BK_PLUS_QM      Syntax bit. final public static  int RE_CHAR_CLASSES      Syntax bit. final public static  int RE_CHAR_CLASS_ESCAPES      Syntax bit. final public static  int RE_CHAR_CLASS_ESC_IN_LISTS      Syntax bit. final public static  int RE_COMMENTS      Syntax bit. final public static  int RE_CONTEXT_INDEP_ANCHORS      Syntax bit. final public static  int RE_CONTEXT_INDEP_OPS      Syntax bit. final public static  int RE_CONTEXT_INVALID_OPS      Syntax bit. final public static  int RE_DOT_NEWLINE      Syntax bit. final public static  int RE_DOT_NOT_NULL      Syntax bit. final public static  int RE_HAT_LISTS_NOT_NEWLINE      Syntax bit. final public static  int RE_INTERVALS      Syntax bit. final public static  int RE_LIMITED_OPS      Syntax bit. final public static  int RE_LOOKAHEAD      Syntax bit. final public static  int RE_NEWLINE_ALT      Syntax bit. final public static  int RE_NO_BK_BRACES      Syntax bit. final public static  int RE_NO_BK_PARENS      Syntax bit. final public static  int RE_NO_BK_REFS      Syntax bit. final public static  int RE_NO_BK_VBAR      Syntax bit. final public static  int RE_NO_EMPTY_RANGES      Syntax bit. final public static  int RE_PURE_GROUPING      Syntax bit. final public static  int RE_STINGY_OPS      Syntax bit. final public static  int RE_STRING_ANCHORS      Syntax bit. final public static  RESyntax RE_SYNTAX_AWK      Predefined syntax. final public static  RESyntax RE_SYNTAX_ED      Predefined syntax. final public static  RESyntax RE_SYNTAX_EGREP      Predefined syntax. final public static  RESyntax RE_SYNTAX_EMACS      Predefined syntax. final public static  RESyntax RE_SYNTAX_GREP      Predefined syntax. final public static  RESyntax RE_SYNTAX_PERL4      Predefined syntax. final public static  RESyntax RE_SYNTAX_PERL4_S      Predefined syntax. final public static  RESyntax RE_SYNTAX_PERL5      Predefined syntax. final public static  RESyntax RE_SYNTAX_PERL5_S      Predefined syntax. final public static  RESyntax RE_SYNTAX_POSIX_AWK      Predefined syntax. final public static  RESyntax RE_SYNTAX_POSIX_BASIC      Predefined syntax. final public static  RESyntax RE_SYNTAX_POSIX_EGREP      Predefined syntax. final public static  RESyntax RE_SYNTAX_POSIX_EXTENDED      Predefined syntax. final public static  RESyntax RE_SYNTAX_POSIX_MINIMAL_BASIC      Predefined syntax. final public static  RESyntax RE_SYNTAX_POSIX_MINIMAL_EXTENDED      Predefined syntax. final public static  RESyntax RE_SYNTAX_SED      Predefined syntax. final public static  int RE_UNMATCHED_RIGHT_PAREN_ORD      Syntax bit. Constructor Summary public   RESyntax()      Construct a new syntax object with all bits turned off. public   RESyntax(RESyntax other)      Construct a new syntax object with all bits set the same as the other syntax. Method Summary public  RESyntax clear(int index)      Clear a given bit in this syntax. 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. public  RESyntax makeFinal()      Called internally when constructing predefined syntaxes so their interpretation cannot vary. public  RESyntax set(int index)      Set a given bit in this syntax. public  RESyntax setLineSeparator(String aSeparator)      Changes the line separator string for regular expressions created using this RESyntax. Field Detail DEFAULT_LINE_SEPARATOR final static String DEFAULT_LINE_SEPARATOR(Code) RE_BACKSLASH_ESCAPE_IN_LISTS final public static int RE_BACKSLASH_ESCAPE_IN_LISTS(Code) Syntax bit. Backslash is an escape character in lists. RE_BK_PLUS_QM final public static int RE_BK_PLUS_QM(Code) Syntax bit. Use \? instead of ? and \+ instead of +. RE_CHAR_CLASSES final public static int RE_CHAR_CLASSES(Code) Syntax bit. POSIX character classes ([:...:]) in lists are allowed. RE_CHAR_CLASS_ESCAPES final public static int RE_CHAR_CLASS_ESCAPES(Code) Syntax bit. Allow character class escapes (\d, \D, \s, \S, \w, \W). RE_CHAR_CLASS_ESC_IN_LISTS final public static int RE_CHAR_CLASS_ESC_IN_LISTS(Code) Syntax bit. Allow character class escapes within lists, as in Perl5. RE_COMMENTS final public static int RE_COMMENTS(Code) Syntax bit. Allow embedded comments, (?#comment), as in Perl5. RE_CONTEXT_INDEP_ANCHORS final public static int RE_CONTEXT_INDEP_ANCHORS(Code) Syntax bit. ^ and $ are special everywhere. Not implemented. RE_CONTEXT_INDEP_OPS final public static int RE_CONTEXT_INDEP_OPS(Code) Syntax bit. Repetition operators are only special in valid positions. Not implemented. RE_CONTEXT_INVALID_OPS final public static int RE_CONTEXT_INVALID_OPS(Code) Syntax bit. Repetition and alternation operators are invalid at start and end of pattern and other places. Not implemented. RE_DOT_NEWLINE final public static int RE_DOT_NEWLINE(Code) Syntax bit. Match-any-character operator (.) matches a newline. RE_DOT_NOT_NULL final public static int RE_DOT_NOT_NULL(Code) Syntax bit. Match-any-character operator (.) does not match a null. RE_HAT_LISTS_NOT_NEWLINE final public static int RE_HAT_LISTS_NOT_NEWLINE(Code) Syntax bit. Not implemented. RE_INTERVALS final public static int RE_INTERVALS(Code) Syntax bit. Intervals ({x}, {x,}, {x,y}) are allowed. RE_LIMITED_OPS final public static int RE_LIMITED_OPS(Code) Syntax bit. No alternation (|), match one-or-more (+), or match zero-or-one (?) operators. RE_LOOKAHEAD final public static int RE_LOOKAHEAD(Code) Syntax bit. Allow use of (?=xxx) and (?!xxx) apply the subexpression to the text following the current position without consuming that text. RE_NEWLINE_ALT final public static int RE_NEWLINE_ALT(Code) Syntax bit. Newline is an alternation operator. RE_NO_BK_BRACES final public static int RE_NO_BK_BRACES(Code) Syntax bit. Intervals use { } instead of \{ \} RE_NO_BK_PARENS final public static int RE_NO_BK_PARENS(Code) Syntax bit. Grouping uses ( ) instead of \( \). RE_NO_BK_REFS final public static int RE_NO_BK_REFS(Code) Syntax bit. Backreferences not allowed. RE_NO_BK_VBAR final public static int RE_NO_BK_VBAR(Code) Syntax bit. Alternation uses | instead of \| RE_NO_EMPTY_RANGES final public static int RE_NO_EMPTY_RANGES(Code) Syntax bit. Not implemented. RE_PURE_GROUPING final public static int RE_PURE_GROUPING(Code) Syntax bit. Allow use of (?:xxx) grouping (subexpression is not saved). RE_STINGY_OPS final public static int RE_STINGY_OPS(Code) Syntax bit. Stingy matching is allowed (+?, *?, ??, {x,y}?). RE_STRING_ANCHORS final public static int RE_STRING_ANCHORS(Code) Syntax bit. Allow beginning- and end-of-string anchors (\A, \Z). RE_SYNTAX_AWK final public static RESyntax RE_SYNTAX_AWK(Code) Predefined syntax. Emulates regular expression support in the awk utility. RE_SYNTAX_ED final public static RESyntax RE_SYNTAX_ED(Code) Predefined syntax. Emulates regular expression support in the ed utility. RE_SYNTAX_EGREP final public static RESyntax RE_SYNTAX_EGREP(Code) Predefined syntax. Emulates regular expression support in the egrep utility. RE_SYNTAX_EMACS final public static RESyntax RE_SYNTAX_EMACS(Code) Predefined syntax. Emulates regular expression support in the GNU Emacs editor. RE_SYNTAX_GREP final public static RESyntax RE_SYNTAX_GREP(Code) Predefined syntax. Emulates regular expression support in the grep utility. RE_SYNTAX_PERL4 final public static RESyntax RE_SYNTAX_PERL4(Code) Predefined syntax. Emulates regular expression support in Larry Wall's perl, version 4, RE_SYNTAX_PERL4_S final public static RESyntax RE_SYNTAX_PERL4_S(Code) Predefined syntax. Emulates regular expression support in Larry Wall's perl, version 4, using single line mode (/s modifier). RE_SYNTAX_PERL5 final public static RESyntax RE_SYNTAX_PERL5(Code) Predefined syntax. Emulates regular expression support in Larry Wall's perl, version 5. RE_SYNTAX_PERL5_S final public static RESyntax RE_SYNTAX_PERL5_S(Code) Predefined syntax. Emulates regular expression support in Larry Wall's perl, version 5, using single line mode (/s modifier). RE_SYNTAX_POSIX_AWK final public static RESyntax RE_SYNTAX_POSIX_AWK(Code) Predefined syntax. Emulates regular expression support in the POSIX awk specification. RE_SYNTAX_POSIX_BASIC final public static RESyntax RE_SYNTAX_POSIX_BASIC(Code) Predefined syntax. Emulates POSIX basic regular expression support. RE_SYNTAX_POSIX_EGREP final public static RESyntax RE_SYNTAX_POSIX_EGREP(Code) Predefined syntax. Emulates regular expression support in the POSIX egrep specification. RE_SYNTAX_POSIX_EXTENDED final public static RESyntax RE_SYNTAX_POSIX_EXTENDED(Code) Predefined syntax. Emulates POSIX extended regular expression support. RE_SYNTAX_POSIX_MINIMAL_BASIC final public static RESyntax RE_SYNTAX_POSIX_MINIMAL_BASIC(Code) Predefined syntax. Emulates POSIX basic minimal regular expressions. RE_SYNTAX_POSIX_MINIMAL_EXTENDED final public static RESyntax RE_SYNTAX_POSIX_MINIMAL_EXTENDED(Code) Predefined syntax. Emulates POSIX extended minimal regular expressions. RE_SYNTAX_SED final public static RESyntax RE_SYNTAX_SED(Code) Predefined syntax. Emulates regular expression support in the sed utility. RE_UNMATCHED_RIGHT_PAREN_ORD final public static int RE_UNMATCHED_RIGHT_PAREN_ORD(Code) Syntax bit. An unmatched right parenthesis (')' or '\)', depending on RE_NO_BK_PARENS) will throw an exception when compiling. Constructor Detail RESyntax public RESyntax()(Code) Construct a new syntax object with all bits turned off. This is equivalent to RE_SYNTAX_EMACS. RESyntax public RESyntax(RESyntax other)(Code) Construct a new syntax object with all bits set the same as the other syntax. Method Detail clear public RESyntax clear(int index)(Code) Clear a given bit in this syntax. Parameters:   index - the constant (RESyntax.RE_xxx) bit to clear. a reference to this object for easy chaining. get public boolean get(int index)(Code) Check if a given bit is set in this syntax. getLineSeparator public String getLineSeparator()(Code) Returns the currently active line separator string. The default is the platform-dependent system property "line.separator". makeFinal public RESyntax makeFinal()(Code) 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. this object for convenient chaining set public RESyntax set(int index)(Code) Set a given bit in this syntax. Parameters:   index - the constant (RESyntax.RE_xxx) bit to set. a reference to this object for easy chaining. setLineSeparator public RESyntax setLineSeparator(String aSeparator)(Code) 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. this object for convenient chaining Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)