Groovy 2.2.1

org.codehaus.groovy.syntax
[Java] Class Reduction

java.lang.Object
  org.codehaus.groovy.syntax.CSTNode
      org.codehaus.groovy.syntax.Reduction

public class Reduction
extends CSTNode

A syntax reduction, produced by the Parser.

Authors:
bob mcwhirter
Chris Poirier
Version:
\$Id\$
See Also:
Parser
Token
CSTNode
Types


Field Summary
static Reduction EMPTY

 
Constructor Summary
Reduction(Token root)

Initializes the Reduction with the specified root.

 
Method Summary
CSTNode add(CSTNode element)

Adds an element to the node.

Reduction asReduction()

CSTNode get(int index)

Returns the specified element, or null.

Token getRoot()

Returns the root of the node, the Token that indicates it's type.

boolean isAnExpression()

Returns true if the node is a complete expression.

boolean isEmpty()

Returns true if the node is completely empty (no root, even).

void markAsExpression()

Marks the node a complete expression.

static Reduction newContainer()

Creates a new Reduction with Token.NULL as it's root.

CSTNode remove(int index)

Removes a node from the Reduction.

CSTNode set(int index, CSTNode element)

int size()

Returns the number of elements in the node.

 
Methods inherited from class CSTNode
add, addChildrenOf, asReduction, canMean, children, get, get, getDescription, getMeaning, getMeaningAs, getRoot, getRoot, getRootText, getStartColumn, getStartLine, getType, hasChildren, isA, isAllOf, isAnExpression, isEmpty, isOneOf, markAsExpression, set, setMeaning, size, toString, write, write
 
Methods inherited from class Object
wait, wait, wait, equals, toString, hashCode, getClass, notify, notifyAll
 

Field Detail

EMPTY

public static final Reduction EMPTY


 
Constructor Detail

Reduction

public Reduction(Token root)
Initializes the Reduction with the specified root.


 
Method Detail

add

public CSTNode add(CSTNode element)
Adds an element to the node.


asReduction

public Reduction asReduction()


get

public CSTNode get(int index)
Returns the specified element, or null.


getRoot

public Token getRoot()
Returns the root of the node, the Token that indicates it's type. Returns null if there is no root (usually only if the node is a placeholder of some kind -- see isEmpty()).


isAnExpression

public boolean isAnExpression()
Returns true if the node is a complete expression.


isEmpty

public boolean isEmpty()
Returns true if the node is completely empty (no root, even).


markAsExpression

public void markAsExpression()
Marks the node a complete expression.


newContainer

public static Reduction newContainer()
Creates a new Reduction with Token.NULL as it's root.


remove

public CSTNode remove(int index)
Removes a node from the Reduction. You cannot remove the root node (index 0).


set

public CSTNode set(int index, CSTNode element)


size

public int size()
Returns the number of elements in the node.


 

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