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Jakarta-Regexp 1.2 API: Class REDebugCompiler

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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,v 1.1 2000/04/27 01:22:33 jon Exp $
Author:: Jonathan Locke

Inner classes 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

bracketEnd, bracketFinished, bracketMin, bracketOpt, brackets, bracketStart, bracketUnbounded, ESC_BACKREF, ESC_CLASS, ESC_COMPLEX, ESC_MASK, hashPOSIX, idx, instruction, len, lenInstruction, maxBrackets, NODE_NORMAL, NODE_NULLABLE, NODE_TOPLEVEL, parens, pattern

Constructor Summary

REDebugCompiler()


Method Summary

(package private) static void ()


(package private) java.lang.String charToString(char c)
          Return a string describing a (possibly unprintable) character.

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

allocBrackets, 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, registerNatives, 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


static void ()

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