sjm.parse
Class ParserTester

java.lang.Object
  |
  +--sjm.parse.ParserTester

Direct Known Subclasses:

CharacterTester, TokenTester

public abstract class ParserTester

extends java.lang.Object

This class generates random language elements for a parser and tests that the parser can accept them.

Version:

1.0

Author:

Steven J. Metsker

Field Summary

protected boolean	logTestStrings
protected Parser	p

Constructor Summary

ParserTester(Parser p)
Constructs a tester for the given parser.

Method Summary

protected abstract Assembly	assembly(java.lang.String s)
protected boolean	canGenerateProblem(int depth)
static java.util.Vector	completeMatches(java.util.Vector in) Return a subset of the supplied vector of assemblies, filtering for assemblies that have been completely matched.
protected PubliclyCloneable	freshTarget()
protected void	logDepthChange(int depth)
protected void	logPassed()
protected void	logProblemFound(java.lang.String s, int matchSize)
protected void	logTestString(java.lang.String s)
protected java.lang.String	separator()
void	setLogTestStrings(boolean logTestStrings) Set the boolean which determines if this class displays every test string.
void	test() Create a series of random language elements, and test that the parser can unambiguously parse each one.

Methods inherited from class java.lang.Object

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

Field Detail

p

protected Parser p

logTestStrings

protected boolean logTestStrings

Constructor Detail

ParserTester

public ParserTester(Parser p)

Constructs a tester for the given parser.

Method Detail

assembly

protected abstract Assembly assembly(java.lang.String s)

canGenerateProblem

protected boolean canGenerateProblem(int depth)

completeMatches

public static java.util.Vector completeMatches(java.util.Vector in)

Return a subset of the supplied vector of assemblies, filtering for assemblies that have been completely matched.

Parameters:

Vector - a collection of partially or completely matched assemblies

Returns:

a collection of completely matched assemblies

freshTarget

protected PubliclyCloneable freshTarget()

logDepthChange

protected void logDepthChange(int depth)

logPassed

protected void logPassed()

logProblemFound

protected void logProblemFound(java.lang.String s,
                               int matchSize)

logTestString

protected void logTestString(java.lang.String s)

separator

protected java.lang.String separator()

setLogTestStrings

public void setLogTestStrings(boolean logTestStrings)

Set the boolean which determines if this class displays every test string.

Parameters:

boolean - true, if the user wants to see every test string

test

public void test()

Create a series of random language elements, and test that the parser can unambiguously parse each one.