Class StepPrev

java.lang.Object

nl.basjes.parse.useragent.analyze.treewalker.steps.Step

nl.basjes.parse.useragent.analyze.treewalker.steps.walk.StepPrev

All Implemented Interfaces:

Serializable

public class StepPrev
extends Step

See Also:

• Serialized Form

Field Summary

Fields inherited from class Step

LOG, logprefix, verbose

Constructor Summary

Constructors

Constructor	Description
StepPrev()

Method Summary

Modifier and Type	Method	Description
String	toString()
WalkList.WalkResult	walk(org.antlr.v4.runtime.tree.ParseTree tree, String value)	This will walk into the tree and recurse through all the remaining steps.

Methods inherited from class Step

canFail, destroy, getActualValue, getNextStep, mustHaveInput, setNextStep, setVerbose, treeIsSeparator, up, walkNextStep

Methods inherited from class Object

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

Constructor Details

StepPrev

public StepPrev()

Method Details

walk

public WalkList.WalkResult walk(@Nonnull
 org.antlr.v4.runtime.tree.ParseTree tree,
 @Nullable
 String value)

Description copied from class: Step

This will walk into the tree and recurse through all the remaining steps. This must iterate of all possibilities and return the first matching result.

Specified by:

walk in class Step

Parameters:

tree - The tree to walk into.

value - The string representation of the previous step (needed for compare and lookup operations). The null value means to use the implicit 'full' value (i.e. getSourceText(tree) )

Returns:

Either null or the actual value that was found.

toString

public String toString()

Overrides:

toString in class Object