| java.lang.Object
 org.apache.regexp.REProgram
| REProgram | | public class REProgram implements Serializable(Code) | | A class that holds compiled regular expressions. This is exposed mainly
for use by the recompile utility (which helps you produce precompiled
REProgram objects). You should not otherwise need to work directly with
this class.
See Also: RE
See Also: RECompiler
author:
Jonathan Locke
version:
$Id: REProgram.java 518156 2007-03-14 14:31:26Z vgritsenko $ |
| Constructor Summary | |
| public | REProgram(char[] instruction)
| | public | REProgram(int parens, char[] instruction)
| | public | REProgram(char[] instruction, int lenInstruction)
|
| Method Summary | |
| public char[] | getInstructions()
Returns a copy of the current regular expression program in a character
array that is exactly the right length to hold the program. | | public char[] | getPrefix()
Returns a copy of the prefix of current regular expression program
in a character array. | | public void | setInstructions(char[] instruction, int lenInstruction)
Sets a new regular expression program to run. |
| OPT_HASBACKREFS | | final static int OPT_HASBACKREFS(Code) | | |
| OPT_HASBOL | | final static int OPT_HASBOL(Code) | | |
| instruction | | char[] instruction(Code) | | |
| lenInstruction | | int lenInstruction(Code) | | |
| REProgram | | public REProgram(char[] instruction)(Code) | | Constructs a program object from a character array
Parameters:
instruction - Character array with RE opcode instructions in it |
| REProgram | | public REProgram(int parens, char[] instruction)(Code) | | Constructs a program object from a character array
Parameters:
parens - Count of parens in the program
Parameters:
instruction - Character array with RE opcode instructions in it |
| REProgram | | public REProgram(char[] instruction, int lenInstruction)(Code) | | Constructs a program object from a character array
Parameters:
instruction - Character array with RE opcode instructions in it
Parameters:
lenInstruction - Amount of instruction array in use |
| getInstructions | | public char[] getInstructions()(Code) | | Returns a copy of the current regular expression program in a character
array that is exactly the right length to hold the program. If there is
no program compiled yet, getInstructions() will return null.
A copy of the current compiled RE program |
| getPrefix | | public char[] getPrefix()(Code) | | Returns a copy of the prefix of current regular expression program
in a character array. If there is no prefix, or there is no program
compiled yet, getPrefix will return null.
A copy of the prefix of current compiled RE program |
| setInstructions | | public void setInstructions(char[] instruction, int lenInstruction)(Code) | | Sets a new regular expression program to run. It is this method which
performs any special compile-time search optimizations. Currently only
two optimizations are in place - one which checks for backreferences
(so that they can be lazily allocated) and another which attempts to
find an prefix anchor string so that substantial amounts of input can
potentially be skipped without running the actual program.
Parameters:
instruction - Program instruction buffer
Parameters:
lenInstruction - Length of instruction buffer in use |
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