net.sourceforge.htmlunit.corejs.javascript.ast
Class XmlRef

java.lang.Object
  net.sourceforge.htmlunit.corejs.javascript.Node
      net.sourceforge.htmlunit.corejs.javascript.ast.AstNode
          net.sourceforge.htmlunit.corejs.javascript.ast.XmlRef

All Implemented Interfaces:

java.lang.Comparable<AstNode>, java.lang.Iterable<Node>

Direct Known Subclasses:

XmlElemRef, XmlPropRef

public abstract class XmlRef
extends AstNode

Base class for E4X XML attribute-access or property-get expressions. Such expressions can take a variety of forms. The general syntax has three parts:

1. optional: an @
(specifying an attribute access)
2. optional: a namespace (a Name) and double-colon
3. required: either a Name or a bracketed [expression]

The property-name expressions (examples: ns::name, @name) are represented as XmlPropRef nodes. The bracketed-expression versions (examples: ns::[name], @[name]) become XmlElemRef nodes.

This node type (or more specifically, its subclasses) will sometimes be the right-hand child of a PropertyGet node or an XmlMemberGet node. The XmlRef node may also be a standalone primary expression with no explicit target, which is valid in certain expression contexts such as company..employee.(@id < 100) - in this case, the @id is an XmlRef that is part of an infix '<' expression whose parent is an XmlDotQuery node.

Nested Class Summary

Nested classes/interfaces inherited from class net.sourceforge.htmlunit.corejs.javascript.ast.AstNode

AstNode.DebugPrintVisitor, AstNode.PositionComparator

Nested classes/interfaces inherited from class net.sourceforge.htmlunit.corejs.javascript.Node

Node.NodeIterator

Field Summary

protected int	atPos
protected int	colonPos
protected Name	namespace

Fields inherited from class net.sourceforge.htmlunit.corejs.javascript.ast.AstNode

length, parent, position

Fields inherited from class net.sourceforge.htmlunit.corejs.javascript.Node

ATTRIBUTE_FLAG, BOTH, CASEARRAY_PROP, CATCH_SCOPE_PROP, CONTROL_BLOCK_PROP, DECR_FLAG, DESCENDANTS_FLAG, DESTRUCTURING_ARRAY_LENGTH, DESTRUCTURING_NAMES, DESTRUCTURING_PARAMS, DESTRUCTURING_SHORTHAND, DIRECTCALL_PROP, END_DROPS_OFF, END_RETURNS, END_RETURNS_VALUE, END_UNREACHED, END_YIELDS, EXPRESSION_CLOSURE_PROP, first, FUNCTION_PROP, GENERATOR_END_PROP, INCRDECR_PROP, ISNUMBER_PROP, JSDOC_PROP, LABEL_ID_PROP, last, LAST_PROP, LEFT, lineno, LOCAL_BLOCK_PROP, LOCAL_PROP, MEMBER_TYPE_PROP, NAME_PROP, next, NON_SPECIALCALL, OBJECT_IDS_PROP, PARENTHESIZED_PROP, POST_FLAG, PROPERTY_FLAG, propListHead, REGEXP_PROP, RIGHT, SKIP_INDEXES_PROP, SPECIALCALL_EVAL, SPECIALCALL_PROP, SPECIALCALL_WITH, TARGETBLOCK_PROP, type, VARIABLE_PROP

Constructor Summary

XmlRef()

XmlRef(int pos)

XmlRef(int pos, int len)

Method Summary

int	getAtPos() Returns position of @-token, or -1 if this is not an attribute-access expression.
int	getColonPos() Returns position of :: token, or -1 if not present.
Name	getNamespace() Return the namespace.
boolean	isAttributeAccess() Returns true if this expression began with an @-token.
void	setAtPos(int atPos) Sets position of @-token, or -1
void	setColonPos(int colonPos) Sets position of :: token, or -1 if not present
void	setNamespace(Name namespace) Sets namespace, and sets its parent to this node.

Methods inherited from class net.sourceforge.htmlunit.corejs.javascript.ast.AstNode

addChild, assertNotNull, codeBug, compareTo, debugPrint, depth, getAbsolutePosition, getAstRoot, getEnclosingFunction, getEnclosingScope, getLength, getLineno, getParent, getPosition, hasSideEffects, makeIndent, operatorToString, printList, setBounds, setLength, setParent, setPosition, setRelative, shortName, toSource, toSource, visit

Methods inherited from class net.sourceforge.htmlunit.corejs.javascript.Node

addChildAfter, addChildBefore, addChildrenToBack, addChildrenToFront, addChildToBack, addChildToFront, getChildBefore, getDouble, getExistingIntProp, getFirstChild, getIntProp, getJsDoc, getJsDocNode, getLastChild, getLastSibling, getNext, getProp, getScope, getString, getType, hasChildren, hasConsistentReturnUsage, iterator, labelId, labelId, newNumber, newString, newString, newTarget, putIntProp, putProp, removeChild, removeChildren, removeProp, replaceChild, replaceChildAfter, resetTargets, setDouble, setJsDocNode, setLineno, setScope, setString, setType, toString, toStringTree

Methods inherited from class java.lang.Object

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

Field Detail

namespace

protected Name namespace

atPos

protected int atPos

colonPos

protected int colonPos

Constructor Detail

XmlRef

public XmlRef()

XmlRef

public XmlRef(int pos)

XmlRef

public XmlRef(int pos,
              int len)

Method Detail

getNamespace

public Name getNamespace()

Return the namespace. May be @null.

setNamespace

public void setNamespace(Name namespace)

Sets namespace, and sets its parent to this node. Can be null.

isAttributeAccess

public boolean isAttributeAccess()

Returns true if this expression began with an @-token.

getAtPos

public int getAtPos()

Returns position of @-token, or -1 if this is not an attribute-access expression.

setAtPos

public void setAtPos(int atPos)

Sets position of @-token, or -1

getColonPos

public int getColonPos()

Returns position of :: token, or -1 if not present. It will only be present if the namespace node is non-null.

setColonPos

public void setColonPos(int colonPos)

Sets position of :: token, or -1 if not present