Class ProductionRule

java.lang.Object

com.knezevic.edaf.v3.repr.grammar.model.ProductionRule

public final class ProductionRule
extends Object

One grammar production rule.

Right-hand side may begin with an OperatorTerminal followed by argument symbols, or contain a single leaf terminal/non-terminal.

Constructor Summary

Constructors

Constructor	Description
ProductionRule(String id, NonTerminal left, List<GrammarSymbol> right)	Creates immutable production rule.

Method Summary

Modifier and Type	Method	Description
List<GrammarSymbol>	childSymbols()	Returns child symbols used to build derivation tree children.
boolean	equals(Object obj)
int	hashCode()
String	id()	Rule identifier.
boolean	isLeafCandidate()	Returns true when rule can terminate without expanding additional non-terminals.
NonTerminal	left()	Left non-terminal.
int	nonTerminalChildCount()	Returns the number of non-terminal child symbols.
OperatorTerminal	operator()	Returns operator terminal when RHS begins with an operator.
List<GrammarSymbol>	right()	Full right-hand side symbol sequence.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

ProductionRule

public ProductionRule(String id,
 NonTerminal left,
 List<GrammarSymbol> right)

Creates immutable production rule.

Method Details

id

public String id()

Rule identifier.

left

public NonTerminal left()

Left non-terminal.

right

public List<GrammarSymbol> right()

Full right-hand side symbol sequence.

operator

public OperatorTerminal operator()

Returns operator terminal when RHS begins with an operator.

childSymbols

public List<GrammarSymbol> childSymbols()

Returns child symbols used to build derivation tree children.

isLeafCandidate

public boolean isLeafCandidate()

Returns true when rule can terminate without expanding additional non-terminals.

nonTerminalChildCount

public int nonTerminalChildCount()

Returns the number of non-terminal child symbols.

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object