org.quattor.pan.dml.functions
Class AbstractMatcher

java.lang.Object
  org.quattor.pan.dml.AbstractOperation
      org.quattor.pan.dml.functions.BuiltInFunction
          org.quattor.pan.dml.functions.AbstractMatcher

All Implemented Interfaces:

Operation

Direct Known Subclasses:

AbstractStaticMatcher, AbstractVariableMatcher

public abstract class AbstractMatcher
extends BuiltInFunction

Determine whether a string matches a given regular expression, using optional matching flags.

Author:

loomis

Field Summary

Fields inherited from class org.quattor.pan.dml.functions.BuiltInFunction

name

Fields inherited from class org.quattor.pan.dml.AbstractOperation

ops, sourceRange

Constructor Summary

protected

AbstractMatcher(String name, SourceRange sourceRange, Operation... operations)

Method Summary

protected Pattern	compilePattern(Element regex, int flags) Generate a Pattern from the given string and flags.
protected int	convertMatchFlags(Element opts) A utility function to convert a string containing match options to the associated integer with the appropriate bits set.

Methods inherited from class org.quattor.pan.dml.functions.BuiltInFunction

throwExceptionIfCompileTimeContext, toString

Methods inherited from class org.quattor.pan.dml.AbstractOperation

calculateArgs, calculateTerms, checkInvalidSelfContext, checkRestrictedContext, execute, getOperations, getSourceRange

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractMatcher

protected AbstractMatcher(String name,
                          SourceRange sourceRange,
                          Operation... operations)
                   throws SyntaxException

Throws:

SyntaxException

Method Detail

convertMatchFlags

protected int convertMatchFlags(Element opts)

A utility function to convert a string containing match options to the associated integer with the appropriate bits set.

Parameters:

opts - string containing matching flags

Returns:

integer with appropriate bits set

compilePattern

protected Pattern compilePattern(Element regex,
                                 int flags)

Generate a Pattern from the given string and flags.

Parameters:

regex - regular expression to compile

flags - matching flags to use for pattern

Returns:

Pattern corresponding to the given regular expression and matching flags