org.apache.regexp
Class REDebugCompiler

java.lang.Object
  org.apache.regexp.RECompiler
      org.apache.regexp.REDebugCompiler

public class REDebugCompiler
extends RECompiler

A subclass of RECompiler which can dump a regular expression program for debugging purposes.

Version:

$Id: REDebugCompiler.java 518169 2007-03-14 15:03:35Z vgritsenko $

Author:

Jonathan Locke

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.regexp.RECompiler

RECompiler.RERange

Field Summary

(package private) static java.util.Hashtable

hashOpcode Mapping from opcodes to descriptive strings

Fields inherited from class org.apache.regexp.RECompiler

bracketMin, bracketOpt, bracketUnbounded, ESC_BACKREF, ESC_CLASS, ESC_COMPLEX, ESC_MASK, hashPOSIX, idx, instruction, len, lenInstruction, NODE_NORMAL, NODE_NULLABLE, NODE_TOPLEVEL, parens, pattern

Constructor Summary

REDebugCompiler()

Method Summary

(package private) java.lang.String	charToString(char c) Return a string describing a (possibly unprintable) character.
void	dumpProgram() Dumps the current program to a System.out.
void	dumpProgram(java.io.PrintWriter p) Dumps the current program to a PrintWriter.
(package private) java.lang.String	nodeToString(int node) Returns a descriptive string for a node in a regular expression program.
(package private) java.lang.String	opcodeToString(char opcode) Returns a descriptive string for an opcode.

Methods inherited from class org.apache.regexp.RECompiler

atom, bracket, branch, characterClass, closure, compile, emit, ensure, escape, expr, internalError, node, nodeInsert, setNextOfEnd, syntaxError, terminal

Methods inherited from class java.lang.Object

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

Field Detail

hashOpcode

static java.util.Hashtable hashOpcode

Mapping from opcodes to descriptive strings

Constructor Detail

REDebugCompiler

public REDebugCompiler()

Method Detail

opcodeToString

java.lang.String opcodeToString(char opcode)

Returns a descriptive string for an opcode.

Parameters:

opcode - Opcode to convert to a string

Returns:

Description of opcode

charToString

java.lang.String charToString(char c)

Return a string describing a (possibly unprintable) character.

Parameters:

c - Character to convert to a printable representation

Returns:

String representation of character

nodeToString

java.lang.String nodeToString(int node)

Returns a descriptive string for a node in a regular expression program.

Parameters:

node - Node to describe

Returns:

Description of node

dumpProgram

public void dumpProgram(java.io.PrintWriter p)

Dumps the current program to a PrintWriter.

Parameters:

p - PrintWriter for program dump output

dumpProgram

public void dumpProgram()

Dumps the current program to a System.out.