org.jruby.ast

Class RootNode

java.lang.Object

org.jruby.ast.Node

org.jruby.ast.RootNode

All Implemented Interfaces:

ISourcePositionHolder

public class RootNode
extends Node

Represents the top of the AST. This is a node not present in MRI. It was created to hold the top-most static scope in an easy to grab way and it also exists to hold BEGIN and END nodes. These can then be interpreted/compiled in the same places as the rest of the code.

Field Summary

Fields

Modifier and Type	Field and Description
private Node	bodyNode
private DynamicScope	scope
private StaticScope	staticScope

Fields inherited from class org.jruby.ast.Node

EMPTY_LIST

Constructor Summary

Constructors

Constructor and Description
RootNode(ISourcePosition position, DynamicScope scope, Node bodyNode)

Method Summary

Modifier and Type	Method and Description
java.lang.Object	accept(NodeVisitor iVisitor)
java.util.List<Node>	childNodes()
Node	getBodyNode() First real AST node to be interpreted
NodeType	getNodeType()
DynamicScope	getScope() Return the dynamic scope for this AST.
StaticScope	getStaticScope() The static scoping relationships that should get set first thing before interpretation of the code represented by this AST.
IRubyObject	interpret(Ruby runtime, ThreadContext context, IRubyObject self, Block aBlock)

Methods inherited from class org.jruby.ast.Node

assign, createList, createList, createList, createList, definition, getNodeName, getPosition, isNil, setPosition, toString

Methods inherited from class java.lang.Object

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

Field Detail

scope

private transient DynamicScope scope

staticScope

private StaticScope staticScope

bodyNode

private Node bodyNode

Constructor Detail

RootNode

public RootNode(ISourcePosition position,
                DynamicScope scope,
                Node bodyNode)

Method Detail

getNodeType

public NodeType getNodeType()

Specified by:

getNodeType in class Node

Returns:

the nodeId

getScope

public DynamicScope getScope()

Return the dynamic scope for this AST. The variable backed by this is transient so for serialization this is null. In that case we use staticScope to rebuild the dynamic scope. The real reason for this method is supporting bindings+eval. We need to pass our live dynamic scope in so when we eval we can use that dynamic scope.

Returns:

dynamic scope of this AST

getStaticScope

public StaticScope getStaticScope()

The static scoping relationships that should get set first thing before interpretation of the code represented by this AST. Actually, we use getScope first since that also can contain a live dynamic scope. We rely on this method only for interpreting a root node from a serialized format.

Returns:

the top static scope for the AST

getBodyNode

public Node getBodyNode()

First real AST node to be interpreted

Returns:

real top AST node

accept

public java.lang.Object accept(NodeVisitor iVisitor)

Specified by:

accept in class Node

childNodes

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

Specified by:

childNodes in class Node

interpret

public IRubyObject interpret(Ruby runtime,
                             ThreadContext context,
                             IRubyObject self,
                             Block aBlock)

Overrides:

interpret in class Node