PredictionModeExtension extension

on

• PredictionMode

Static Methods

allConfigsInRuleStopStates(ATNConfigSet configs) → bool

Checks if all configurations in configs are in a RuleStopState. Configurations meeting this condition have reached the end of the decision rule (local context) or end of start rule (full context).

allSubsetsConflict(List<BitSet> altsets) → bool

Determines if every alternative subset in altsets contains more than one alternative.

allSubsetsEqual(List<BitSet> altsets) → bool

Determines if every alternative subset in altsets is equivalent.

getAlts(List<BitSet> altsets) → BitSet

Gets the complete set of represented alternatives for a collection of alternative subsets. This method returns the union of each BitSet in altsets.

getAltsFromConfigs(ATNConfigSet configs) → BitSet

Get union of all alts from configs.

getConflictingAltSubsets(ATNConfigSet configs) → List<BitSet>

This function gets the conflicting alt subsets from a configuration set. For each configuration c in configs:

getSingleViableAlt(List<BitSet> altsets) → int

getStateToAltMap(ATNConfigSet configs) → Map<ATNState, BitSet>

Get a map from state to alt subset from a configuration set. For each configuration c in configs:

getUniqueAlt(List<BitSet> altsets) → int

Returns the unique alternative predicted by all alternative subsets in altsets. If no such alternative exists, this method returns {@link ATN#INVALID_ALT_NUMBER}.

hasConfigInRuleStopState(ATNConfigSet configs) → bool

Checks if any configuration in configs is in a RuleStopState. Configurations meeting this condition have reached the end of the decision rule (local context) or end of start rule (full context).

hasConflictingAltSet(List<BitSet> altsets) → bool

Determines if any single alternative subset in altsets contains more than one alternative.

hasNonConflictingAltSet(List<BitSet> altsets) → bool

Determines if any single alternative subset in altsets contains exactly one alternative.

hasSLLConflictTerminatingPrediction(PredictionMode mode, ATNConfigSet configs) → bool

Computes the SLL prediction termination condition.

hasStateAssociatedWithOneAlt(ATNConfigSet configs) → bool

resolvesToJustOneViableAlt(List<BitSet> altsets) → int

Full LL prediction termination.