Package com.tangosol.coherence.dsltools.base

Class NestedBaseTokens

java.lang.Object

com.tangosol.coherence.dsltools.base.BaseToken

com.tangosol.coherence.dsltools.base.CompoundBaseToken

com.tangosol.coherence.dsltools.base.NestedBaseTokens

public class NestedBaseTokens
extends CompoundBaseToken

NestedBaseTokens is a token that holds a sequence of tokens as well as the two bracketing characters. This nesting of tokens makes many algorithms easier in the higher levels of a parser.

Author:

djl 2009.03.14

Constructor Summary

Constructors

Constructor	Description
NestedBaseTokens(char chStart, char chEnd, BaseToken[] aTokens)	Construct a new NestedBaseTokens with the given parameters.

Method Summary

Modifier and Type	Method	Description
char	getNestEnd()	Obtain the character that ends the nesting.
char	getNestStart()	Obtain the character that begins the nesting.
BaseToken[]	getTokens()	Return an array of BaseTokens making up the receiver.
boolean	isNest()	Answer whether this token represents a nested collection of tokens.
String	toString()	Return a human-readable description for this token.

Methods inherited from class com.tangosol.coherence.dsltools.base.CompoundBaseToken

get, isCompound, isLeaf, match, size

Methods inherited from class com.tangosol.coherence.dsltools.base.BaseToken

getSimpleName, isIdentifier, isLiteral, isOperator, isPunctuation, match

Methods inherited from class java.lang.Object

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

Constructor Details

NestedBaseTokens

public NestedBaseTokens(char chStart,
 char chEnd,
 BaseToken[] aTokens)

Construct a new NestedBaseTokens with the given parameters.

Parameters:

chStart - the character that starts the nesting

chEnd - the character that ends the nesting

aTokens - the right argument for the node

Method Details

getTokens

public BaseToken[] getTokens()

Return an array of BaseTokens making up the receiver.

Specified by:

getTokens in class CompoundBaseToken

Returns:

the an array of BaseTokens making up the receiver.

isNest

public boolean isNest()

Answer whether this token represents a nested collection of tokens.

Overrides:

isNest in class BaseToken

Returns:

the answer to the question "is this token a nesting of tokens?"

getNestStart

public char getNestStart()

Obtain the character that begins the nesting.

Returns:

the character that begings the nesting

getNestEnd

public char getNestEnd()

Obtain the character that ends the nesting.

Returns:

the character that ends the nesting

toString

public String toString()

Return a human-readable description for this token.

Overrides:

toString in class CompoundBaseToken

Returns:

a String description of the token