PerCederberg.Grammatica.Runtime.RE
Class RepeatElement

ICloneable
   |
   +--Element
         |
         +--RepeatElement

internal class RepeatElement

extends Element

A regular expression element repeater. The element repeats the matches from a specified element, attempting to reach the maximum repetition count.

RepeatElement

public RepeatElement( Element elem, int min, int max, RepeatElement.RepeatType type );

Creats a new element repeater.

Parameters:

elem - the element to repeat

min - the minimum count

max - the maximum count

type - the repeat type constant

Clone

public override object Clone();

Creates a copy of this element. The copy will be an instance of the same class matching the same strings. Copies of elements are necessary to allow elements to cache intermediate results while matching strings without interfering with other threads.

Returns:

a copy of this element

Match

public override int Match( Matcher m, ReaderBuffer buffer, int start, int skip );

Returns the length of a matching string starting at the specified position. The number of matches to skip can also be specified.

Parameters:

m - the matcher being used

buffer - the input character buffer to match

start - the starting position

skip - the number of matches to skip

Returns:

the length of the matching string, or -1 if no match was found

Throws:

IOException - if an I/O error occurred

PrintTo

public override void PrintTo( TextWriter output, string indent );

Prints this element to the specified output stream.

Parameters:

output - the output stream to use

indent - the current indentation