org.jruby.ast

Class HashNode

java.lang.Object

org.jruby.ast.Node

org.jruby.ast.HashNode

All Implemented Interfaces:

ILiteralNode

public class HashNode
extends Node
implements ILiteralNode

A Literal Hash that can represent either a {a=&b, c=&d} type expression or the list of default values or kwarg in a method call.

Field Summary

Fields inherited from class org.jruby.ast.Node

containsVariableAssignment, newline

Constructor Summary

Constructors

Constructor and Description
HashNode(int line)
HashNode(int line, KeyValuePair<Node,Node> pair)

Method Summary

Modifier and Type	Method and Description
<T> T	accept(NodeVisitor<T> iVisitor) Accept for the visitor pattern.
HashNode	add(KeyValuePair<Node,Node> pair)
java.util.List<Node>	childNodes()
NodeType	getNodeType()
java.util.List<KeyValuePair<Node,Node>>	getPairs()
boolean	hasOnlyRestKwargs() Detect whether only rest kwargs make up this hash.
boolean	hasOnlySymbolKeys()
boolean	hasRestKwarg() Detect presence of a rest kwarg (**kw).
boolean	isEmpty()
boolean	isMaybeKwargs() Is this hash looking like a keyword argument hash? Technically we do not know at the callsite

Methods inherited from class org.jruby.ast.Node

containsVariableAssignment, createList, createList, createList, createList, executesOnce, findFirstChild, getFile, getLine, getNodeName, isNewline, isNil, needsDefinitionCheck, setLine, setNewline, toString, toString, toStringExtraInfo, toStringInternal, unsetNewline

Methods inherited from class java.lang.Object

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

Constructor Detail

HashNode

public HashNode(int line)

HashNode

public HashNode(int line,
                KeyValuePair<Node,Node> pair)

Method Detail

hasOnlySymbolKeys

public boolean hasOnlySymbolKeys()

Returns:

true if all elements of this hash uses symbol keys (might end up representing a kwarg).

isMaybeKwargs

public boolean isMaybeKwargs()

Is this hash looking like a keyword argument hash? Technically we do not know at the callsite

Returns:

true is it looks like one.

hasRestKwarg

public boolean hasRestKwarg()

Detect presence of a rest kwarg (**kw).

Returns:

true if it contains at least one rest kwarg.

hasOnlyRestKwargs

public boolean hasOnlyRestKwargs()

Detect whether only rest kwargs make up this hash. Common case is **a which is HashNode{[(null, a)]}. Less common is **a, **b which is HashNode{[(null, a), (null, b)].}

Returns:

true is only rest kwargs

getNodeType

public NodeType getNodeType()

Specified by:

getNodeType in class Node

Returns:

the nodeId

add

public HashNode add(KeyValuePair<Node,Node> pair)

accept

public <T> T accept(NodeVisitor<T> iVisitor)

Accept for the visitor pattern.

Specified by:

accept in class Node

Parameters:

iVisitor - the visitor

isEmpty

public boolean isEmpty()

getPairs

public java.util.List<KeyValuePair<Node,Node>> getPairs()

childNodes

public java.util.List<Node> childNodes()

Specified by:

childNodes in class Node