org.textmapper.lapg.util

Class RhsUtil

java.lang.Object

org.textmapper.lapg.util.RhsUtil

public class RhsUtil
extends Object

evgeny, 12/7/12

Constructor Summary

Constructors

Constructor and Description
RhsUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static RhsChoice	asChoice(RhsPart... parts)
static boolean	containsRef(RhsPart part, Symbol ref)
static RhsAssignment	getAssignment(RhsPart part)
static AstType	getCastType(RhsPart part)
static Iterable<RhsPart>	getChildren(RhsPart part)
static Symbol	getRepresentative(RhsPart part)
static RhsSymbol[]	getRhsSymbols(RhsPart p)
static boolean	hasMapping(RhsSequence seq)
static boolean	isConstant(RhsPart part)
static boolean	isConstant(RhsSymbol part)
static boolean	isEmpty(RhsPart p)
static boolean	isNullable(RhsPart part, List<Nonterminal> dependencies) Returns true, if an empty string can be derived from "part".
static RhsPart	unwrap(RhsPart part)
static RhsPart	unwrapEx(RhsPart part, boolean opts, boolean casts, boolean assignments)
static RhsPart	unwrapOpt(RhsPart part)

Methods inherited from class java.lang.Object

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

Constructor Detail

RhsUtil

public RhsUtil()

Method Detail

unwrap

public static RhsPart unwrap(RhsPart part)

unwrapOpt

public static RhsPart unwrapOpt(RhsPart part)

unwrapEx

public static RhsPart unwrapEx(RhsPart part,
               boolean opts,
               boolean casts,
               boolean assignments)

getRepresentative

public static Symbol getRepresentative(RhsPart part)

getCastType

public static AstType getCastType(RhsPart part)

getAssignment

public static RhsAssignment getAssignment(RhsPart part)

isConstant

public static boolean isConstant(RhsPart part)

isConstant

public static boolean isConstant(RhsSymbol part)

isEmpty

public static boolean isEmpty(RhsPart p)

hasMapping

public static boolean hasMapping(RhsSequence seq)

getChildren

public static Iterable<RhsPart> getChildren(RhsPart part)

containsRef

public static boolean containsRef(RhsPart part,
                  Symbol ref)

getRhsSymbols

public static RhsSymbol[] getRhsSymbols(RhsPart p)

isNullable

public static boolean isNullable(RhsPart part,
                 List<Nonterminal> dependencies)

Returns true, if an empty string can be derived from "part". "dependencies" list will contain all nonterminals that prevent "part" to be nullable.

asChoice

public static RhsChoice asChoice(RhsPart... parts)