org.jruby.ast

Class Node

java.lang.Object

org.jruby.ast.Node

All Implemented Interfaces:

ISourcePositionHolder

Direct Known Subclasses:

AliasNode, AndNode, ArgAuxillaryNode, ArgsCatNode, ArgsNode, ArgsPushNode, ArgumentNode, AssignableNode, AttrAssignNode, BackRefNode, BeginNode, BignumNode, BlockArg18Node, BlockArgNode, BlockPassNode, BreakNode, CallNode, CaseNode, ClassNode, ClassVarNode, Colon3Node, ConstNode, DefinedNode, DotNode, DVarNode, EncodingNode, EnsureNode, EvStrNode, FalseNode, FCallNode, FixnumNode, FlipNode, FloatNode, GlobalVarNode, HashNode, IfNode, InstVarNode, IterNode, KeywordArgNode, ListNode, LiteralNode, LocalVarNode, Match2Node, Match3Node, MatchNode, MethodDefNode, ModuleNode, NewlineNode, NextNode, NilNode, NotNode, NthRefNode, OpAsgnAndNode, OpAsgnNode, OpAsgnOrNode, OpElementAsgnNode, OptArgNode, OrNode, RedoNode, RegexpNode, RescueBodyNode, RescueNode, RetryNode, ReturnNode, RootNode, SClassNode, SelfNode, SplatNode, StarNode, StrNode, SuperNode, SValueNode, SymbolNode, ToAryNode, TrueNode, UndefNode, UntilNode, VAliasNode, VCallNode, WhenNode, WhileNode, XStrNode, YieldNode, ZArrayNode, ZeroArgNode, ZSuperNode

public abstract class Node
extends java.lang.Object
implements ISourcePositionHolder

Base class for all Nodes in the AST

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static java.util.List<Node>	EMPTY_LIST
private ISourcePosition	position

Constructor Summary

Constructors

Constructor and Description
Node(ISourcePosition position)

Method Summary

Modifier and Type	Method and Description
abstract java.lang.Object	accept(NodeVisitor visitor)
IRubyObject	assign(Ruby runtime, ThreadContext context, IRubyObject self, IRubyObject value, Block block, boolean checkArity)
abstract java.util.List<Node>	childNodes()
protected static java.util.List<Node>	createList(Node... nodes)
protected static java.util.List<Node>	createList(Node node)
protected static java.util.List<Node>	createList(Node node1, Node node2)
protected static java.util.List<Node>	createList(Node node1, Node node2, Node node3)
RubyString	definition(Ruby runtime, ThreadContext context, IRubyObject self, Block aBlock)
protected java.lang.String	getNodeName()
abstract NodeType	getNodeType()
ISourcePosition	getPosition() Location of this node within the source
IRubyObject	interpret(Ruby runtime, ThreadContext context, IRubyObject self, Block aBlock)
boolean	isNil() Whether the node evaluates to nil and has no side effects.
void	setPosition(ISourcePosition position)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_LIST

static final java.util.List<Node> EMPTY_LIST

position

private ISourcePosition position

Constructor Detail

Node

public Node(ISourcePosition position)

Method Detail

getPosition

public ISourcePosition getPosition()

Location of this node within the source

Specified by:

getPosition in interface ISourcePositionHolder

setPosition

public void setPosition(ISourcePosition position)

Specified by:

setPosition in interface ISourcePositionHolder

accept

public abstract java.lang.Object accept(NodeVisitor visitor)

childNodes

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

createList

protected static java.util.List<Node> createList(Node node)

createList

protected static java.util.List<Node> createList(Node node1,
                                                 Node node2)

createList

protected static java.util.List<Node> createList(Node node1,
                                                 Node node2,
                                                 Node node3)

createList

protected static java.util.List<Node> createList(Node... nodes)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getNodeName

protected java.lang.String getNodeName()

interpret

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

assign

public IRubyObject assign(Ruby runtime,
                          ThreadContext context,
                          IRubyObject self,
                          IRubyObject value,
                          Block block,
                          boolean checkArity)

definition

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

getNodeType

public abstract NodeType getNodeType()

Returns:

the nodeId

isNil

public boolean isNil()

Whether the node evaluates to nil and has no side effects.

Returns:

true if nil, false otherwise