Package org.antlr.v4.runtime.atn

Class CodePointTransitions

java.lang.Object

org.antlr.v4.runtime.atn.CodePointTransitions

public abstract class CodePointTransitions
extends Object

Utility class to create AtomTransition, RangeTransition, and SetTransition appropriately based on the range of the input. Previously, we distinguished between atom and range transitions for Unicode code points <= U+FFFF and those above. We used a set transition for a Unicode code point > U+FFFF. Now that we can serialize 32-bit int/chars in the ATN serialization, this is no longer necessary.

Constructor Summary

Constructors

Constructor	Description
CodePointTransitions()

Method Summary

Modifier and Type	Method	Description
static Transition	createWithCodePoint(ATNState target, int codePoint)	Return new AtomTransition
static Transition	createWithCodePointRange(ATNState target, int codePointFrom, int codePointTo)	Return new AtomTransition if range represents one atom else SetTransition.

Methods inherited from class java.lang.Object

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

Constructor Detail

CodePointTransitions

public CodePointTransitions()

Method Detail

createWithCodePoint

public static Transition createWithCodePoint(ATNState target,
                                             int codePoint)

Return new AtomTransition

createWithCodePointRange

public static Transition createWithCodePointRange(ATNState target,
                                                  int codePointFrom,
                                                  int codePointTo)

Return new AtomTransition if range represents one atom else SetTransition.