org.stekikun.dolmen.syntax

Class PProduction.ActualExpr

java.lang.Object

org.stekikun.dolmen.syntax.PProduction.ActualExpr

Enclosing class:

PProduction

public static final class PProduction.ActualExpr
extends Object

An expression representing the application of some grammar rule, potentially via applications of parameterized rules of the grammar to other symbols or expressions.

The expression is characterized by its head symbol and its possibly empty list of sub-expressions, which act as effective parameters to the head symbol.

Expression leaves are terminals, rule parameters, and non-parameterized non-terminals.

Author:

Stéphane Lescuyer

Field Summary

Fields

Modifier and Type	Field and Description
List<PProduction.ActualExpr>	params The (possibly empty) list of actual items which should be passed as symb's parameters.
Located<String>	symb The name of the production item, i.e. either the name of a non-terminal or a terminal of the grammar, depending on whether the identifier starts with a lowercase or uppercase character.

Constructor Summary

Constructors

Constructor and Description
ActualExpr(Located<String> symb, List<PProduction.ActualExpr> params) Returns an actual expression made of applying symb to the actuals given in params

Method Summary

Modifier and Type	Method and Description
boolean	equals(@Nullable Object o)
int	hashCode()
boolean	isTerminal()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

symb

public final Located<String> symb

The name of the production item, i.e. either the name of a non-terminal or a terminal of the grammar, depending on whether the identifier starts with a lowercase or uppercase character.

params

public final List<PProduction.ActualExpr> params

The (possibly empty) list of actual items which should be passed as symb's parameters. There should be exactly as many parameters as declared in the declaration of symb. In particular, it should be empty if symb is a terminal or a parameter.

Constructor Detail

ActualExpr

public ActualExpr(Located<String> symb,
                  List<PProduction.ActualExpr> params)

Returns an actual expression made of applying symb to the actuals given in params

Parameters:

symb -

params -

Method Detail

isTerminal

public boolean isTerminal()

Returns:

true is this expression is a terminal

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(@Nullable Object o)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object