com.goldencode.p2j.pattern

Class SearchTrees

java.lang.Object

com.goldencode.p2j.pattern.SearchTrees

All Implemented Interfaces:

DebugLevels

public class SearchTrees
extends java.lang.Object
implements DebugLevels

Special-purpose driver for the pattern engine to search a list of ASTs for matches to a given expression. This provides a command line interface, please see main(java.lang.String[]) for the syntax.

Author:

GES

Field Summary

Fields

Modifier and Type	Field and Description
private static ConversionStatus	LOG Logger

Fields inherited from interface com.goldencode.p2j.pattern.DebugLevels

MSG_DEBUG, MSG_NONE, MSG_STATUS, MSG_TRACE

Constructor Summary

Constructors

Constructor and Description
SearchTrees()

Method Summary

Modifier and Type	Method and Description
static void	main(java.lang.String[] args) Provides a command line interface for searching a list of ASTs for matches to a given expression.
private static void	syntax(java.lang.String msg, int rc) Emit a syntax statement and optional error message to stderr, then exit the process with the specified return code.

Methods inherited from class java.lang.Object

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

Field Detail

LOG

private static final ConversionStatus LOG

Logger

Constructor Detail

SearchTrees

public SearchTrees()

Method Detail

syntax

private static void syntax(java.lang.String msg,
                           int rc)

Emit a syntax statement and optional error message to stderr, then exit the process with the specified return code. This method is called from main(java.lang.String[]) when the user passes command line parameters which are not viable.

Parameters:

msg - Optional error message; may be null.

rc - Process return code used with System.exit().

main

public static void main(java.lang.String[] args)

Provides a command line interface for searching a list of ASTs for matches to a given expression. Matches are dumped to STDOUT.

Syntax:

   java -DP2J_HOME=<home> SearchTrees [options] <expr> <filelist>
   java -DP2J_HOME=<home> SearchTrees -S[options] <expr> <directory> <filespec>
 

Where:

• Options
  • Dn = set debug level 'n' (must be a numeric digit between MSG_NONE (0) and MSG_TRACE (3) inclusive
  • S = use filespecs instead of an explicit file list
  • N = no recursion in filespec mode
• expr is a double quoted string containing a valid expression to evaluate
• explicit file list mode (default approach)
  • <filelist> is arbitrary list of absolute and/or relative file names to scan
• filespec mode
  • <directory> is the directory to search for files
  • "filespec" is the file specification that will be used to create a list of files to process, should be enclosed in double quotes if any of the wildcard characters '*' or '?' are used

Parameters:

args - List of command line arguments.