Class Step
java.lang.Object
nl.basjes.parse.useragent.analyze.treewalker.steps.Step
- All Implemented Interfaces:
Serializable
- Direct Known Subclasses:
StepBackToFull
,StepCleanVersion
,StepConcat
,StepConcatPostfix
,StepConcatPrefix
,StepContains
,StepDefaultIfNull
,StepDown
,StepEndsWith
,StepEquals
,StepExtractBrandFromUrl
,StepIsInLookupContains
,StepIsInLookupPrefix
,StepIsInSet
,StepIsNotInLookupContains
,StepIsNotInLookupPrefix
,StepIsNotInSet
,StepIsNull
,StepIsValidVersion
,StepLookup
,StepLookupContains
,StepLookupPrefix
,StepNext
,StepNextN
,StepNormalizeBrand
,StepNotContains
,StepNotEquals
,StepPrev
,StepPrevN
,StepReplaceString
,StepSegmentRange
,StepStartsWith
,StepUp
,StepWordRange
- See Also:
-
Field Summary
-
Constructor Summary
-
Method Summary
Modifier and TypeMethodDescriptionboolean
canFail()
Some steps cannot fail.void
destroy()
protected String
getActualValue
(org.antlr.v4.runtime.tree.ParseTree tree, String value) boolean
Some steps can even pass if there is no input provided.final void
setNextStep
(int newStepNr, Step newNextStep) void
setVerbose
(boolean newVerbose) static boolean
treeIsSeparator
(org.antlr.v4.runtime.tree.ParseTree tree) protected final org.antlr.v4.runtime.tree.ParseTree
up
(org.antlr.v4.runtime.tree.ParseTree tree) abstract WalkList.WalkResult
This will walk into the tree and recurse through all the remaining steps.protected final WalkList.WalkResult
walkNextStep
(org.antlr.v4.runtime.tree.ParseTree tree, String value)
-
Field Details
-
LOG
protected static final org.apache.logging.log4j.Logger LOG -
logprefix
-
verbose
protected boolean verbose
-
-
Constructor Details
-
Step
public Step()
-
-
Method Details
-
setVerbose
public void setVerbose(boolean newVerbose) -
destroy
public void destroy() -
setNextStep
-
walkNextStep
protected final WalkList.WalkResult walkNextStep(@Nonnull org.antlr.v4.runtime.tree.ParseTree tree, @Nullable String value) -
up
protected final org.antlr.v4.runtime.tree.ParseTree up(@Nonnull org.antlr.v4.runtime.tree.ParseTree tree) -
treeIsSeparator
public static boolean treeIsSeparator(org.antlr.v4.runtime.tree.ParseTree tree) -
getActualValue
-
walk
public abstract WalkList.WalkResult walk(@Nonnull org.antlr.v4.runtime.tree.ParseTree tree, @Nullable String value) 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.- 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.
-
canFail
public boolean canFail()Some steps cannot fail. For a require rule if the last step cannot fail then this can be removed from the require list to improve performance at run time.- Returns:
- If this specific step can or cannot fail.
-
mustHaveInput
public boolean mustHaveInput()Some steps can even pass if there is no input provided.- Returns:
- If this specific step needs input to pass.
-
getNextStep
-