dk.brics.servletvalidator
Class SingleProductionNonTerminalRemovalVisitor

java.lang.Object
  dk.brics.servletvalidator.grammar.AbstractGrammarEntityVisitor
      dk.brics.servletvalidator.SingleProductionNonTerminalRemovalVisitor

All Implemented Interfaces:

GrammarEntityVisitor

public class SingleProductionNonTerminalRemovalVisitor
extends AbstractGrammarEntityVisitor

Removes all non terminals that have only 1 production that is only used in 1 place by inlining its production everywhere where it is used. Especially when the grammar is first created this helps readability a lot and improves analysis performance.

Field Summary

Fields inherited from class dk.brics.servletvalidator.grammar.AbstractGrammarEntityVisitor

marked

Constructor Summary

SingleProductionNonTerminalRemovalVisitor()

Method Summary

void	apply(Grammar g)
void	out(NonTerminal nonTerminal)
boolean	shouldPrettyPrint() If this method returns true the grammar will be printed to debug after the visitor has run

Methods inherited from class dk.brics.servletvalidator.grammar.AbstractGrammarEntityVisitor

apply, apply, apply, getPath, in, in, in, isMarked, mark, out, out, print

Methods inherited from class java.lang.Object

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

Constructor Detail

SingleProductionNonTerminalRemovalVisitor

public SingleProductionNonTerminalRemovalVisitor()

Method Detail

apply

public void apply(Grammar g)

Specified by:

apply in interface GrammarEntityVisitor

Overrides:

apply in class AbstractGrammarEntityVisitor

out

public void out(NonTerminal nonTerminal)

Specified by:

out in interface GrammarEntityVisitor

Overrides:

out in class AbstractGrammarEntityVisitor

shouldPrettyPrint

public boolean shouldPrettyPrint()

Description copied from class: AbstractGrammarEntityVisitor

If this method returns true the grammar will be printed to debug after the visitor has run

Specified by:

shouldPrettyPrint in interface GrammarEntityVisitor

Overrides:

shouldPrettyPrint in class AbstractGrammarEntityVisitor