org.apache.flex.compiler.internal.tree.as

Class NilNode

java.lang.Object

org.apache.flex.compiler.common.SourceLocation

org.apache.flex.compiler.internal.tree.as.NodeBase

org.apache.flex.compiler.internal.tree.as.FixedChildrenNode

org.apache.flex.compiler.internal.tree.as.ExpressionNodeBase

org.apache.flex.compiler.internal.tree.as.NilNode

All Implemented Interfaces:

ISourceLocation, IASNode, IExpressionNode

public final class NilNode
extends ExpressionNodeBase

A nil node is a placeholder used to distinguish a missing optional node. Examples are "for (optE1; optE2; optE3)" or any positional construct of the form "x,,z"

Field Summary

Fields inherited from class org.apache.flex.compiler.internal.tree.as.ExpressionNodeBase

flags

Fields inherited from class org.apache.flex.compiler.internal.tree.as.NodeBase

emptyNodeArray, parent

Fields inherited from interface org.apache.flex.compiler.common.ISourceLocation

UNKNOWN

Constructor Summary

Constructors

Constructor and Description
NilNode()

Method Summary

Methods

Modifier and Type	Method and Description
protected NilNode	copy() Copy the ExpressionNodeBase and its subtree.
ASTNodeID	getNodeID() Get the opcode of this node
boolean	isDynamicExpression(ICompilerProject project) Does this expression evaluate to a dynamic value

Methods inherited from class org.apache.flex.compiler.internal.tree.as.ExpressionNodeBase

computeNamespaceReference, copyForInitializer, getASScope, getBaseExpression, getDecorationNode, getDependencyType, getMName, getParentExpression, hasParenthesis, inFilter, inWith, isPackageReference, normalize, resolve, resolveType, setHasParenthesis

Methods inherited from class org.apache.flex.compiler.internal.tree.as.FixedChildrenNode

isTerminal

Methods inherited from class org.apache.flex.compiler.internal.tree.as.NodeBase

analyze, buildInnerString, buildStringRecursive, canContinueContainmentSearch, collectImportNodes, combineAttributes, connectedToProjectScope, contains, endAfter, endAfter, endBefore, endBefore, fillInOffsets, getAbsoluteEnd, getAbsoluteStart, getAncestorOfType, getChild, getChildCount, getContainingFilePath, getContainingNode, getContainingScope, getEnd, getFileScope, getFileSpecification, getInnerString, getNodeKind, getPackageName, getParent, getScopeNode, getSpanningStart, getStart, getSucceedingNode, getWorkspace, isTransparent, looselyContains, replaceChild, runPostProcess, setChildren, setParent, span, span, span, startAfter, startAfter, startBefore, startBefore, swapChildren, toString, tryGetOffsetLookup, verify

Methods inherited from class org.apache.flex.compiler.common.SourceLocation

getColumn, getEndColumn, getEndLine, getLine, getLineColumnString, getOffsetsString, getSourcePath, getSourcePathString, setColumn, setEnd, setEndColumn, setEndLine, setLine, setSourceLocation, setSourcePath, setStart, span, span

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flex.compiler.tree.as.IASNode

contains, getAncestorOfType, getChild, getChildCount, getContainingNode, getContainingScope, getFileSpecification, getPackageName, getParent, getSpanningStart, getSucceedingNode, isTerminal

Methods inherited from interface org.apache.flex.compiler.common.ISourceLocation

getAbsoluteEnd, getAbsoluteStart, getColumn, getEnd, getEndColumn, getEndLine, getLine, getSourcePath, getStart

Constructor Detail

NilNode

public NilNode()

Method Detail

getNodeID

public ASTNodeID getNodeID()

Description copied from interface: IASNode

Get the opcode of this node

Returns:

the opcode - this is one of the constants defined in ASTConstants

copy

protected NilNode copy()

Description copied from class: ExpressionNodeBase

Copy the ExpressionNodeBase and its subtree.

Specified by:

copy in class ExpressionNodeBase

Returns:

a new ExpressionNodeBase that represents the same content as the original node

isDynamicExpression

public boolean isDynamicExpression(ICompilerProject project)

Description copied from interface: IExpressionNode

Does this expression evaluate to a dynamic value

Specified by:

isDynamicExpression in interface IExpressionNode

Overrides:

isDynamicExpression in class ExpressionNodeBase

Parameters:

project - The ICompilerProject to use to do lookups.

Returns:

true if we evaluate to something dynamic