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

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

All Implemented Interfaces:

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

public class XmlElemRef
extends XmlRef

AST node for an E4X XML [expr] member-ref expression. The node type is Token.REF_MEMBER.

Syntax:

 @opt ns:: opt [ expr ]

Examples include ns::[expr], @ns::[expr], @[expr], *::[expr] and @*::[expr].

Note that the form [expr] (i.e. no namespace or attribute-qualifier) is not a legal XmlElemRef expression, since it's already used for standard JavaScript ElementGet array-indexing. Hence, an XmlElemRef node always has either the attribute-qualifier, a non-null namespace node, or both.

The node starts at the @ token, if present. Otherwise it starts at the namespace name. The node bounds extend through the closing right-bracket, or if it is missing due to a syntax error, through the end of the index expression.

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

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

atPos, colonPos, 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

XmlElemRef()

XmlElemRef(int pos)

XmlElemRef(int pos, int len)

Method Summary

AstNode	getExpression() Returns index expression: the 'expr' in @[expr] or @*::[expr].
int	getLb() Returns left bracket position, or -1 if missing.
int	getRb() Returns left bracket position, or -1 if missing.
void	setBrackets(int lb, int rb) Sets both bracket positions.
void	setExpression(AstNode expr) Sets index expression, and sets its parent to this node.
void	setLb(int lb) Sets left bracket position, or -1 if missing.
void	setRb(int rb) Sets right bracket position, -1 if missing.
java.lang.String	toSource(int depth) Emits source code for this node.
void	visit(NodeVisitor v) Visits this node, then the namespace if provided, then the index expression.

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

getAtPos, getColonPos, getNamespace, isAttributeAccess, setAtPos, setColonPos, setNamespace

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

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

Constructor Detail

XmlElemRef

public XmlElemRef()

XmlElemRef

public XmlElemRef(int pos)

XmlElemRef

public XmlElemRef(int pos,
                  int len)

Method Detail

getExpression

public AstNode getExpression()

Returns index expression: the 'expr' in @[expr] or @*::[expr].

setExpression

public void setExpression(AstNode expr)

Sets index expression, and sets its parent to this node.

Throws:

java.lang.IllegalArgumentException - if expr is null

getLb

public int getLb()

Returns left bracket position, or -1 if missing.

setLb

public void setLb(int lb)

Sets left bracket position, or -1 if missing.

getRb

public int getRb()

Returns left bracket position, or -1 if missing.

setRb

public void setRb(int rb)

Sets right bracket position, -1 if missing.

setBrackets

public void setBrackets(int lb,
                        int rb)

Sets both bracket positions.

toSource

public java.lang.String toSource(int depth)

Description copied from class: AstNode

Emits source code for this node. Callee is responsible for calling this function recursively on children, incrementing indent as appropriate.

Note: if the parser was in error-recovery mode, some AST nodes may have null children that are expected to be non-null when no errors are present. In this situation, the behavior of the toSource method is undefined: toSource implementations may assume that the AST node is error-free, since it is intended to be invoked only at runtime after a successful parse.

Specified by:

toSource in class AstNode

Parameters:

depth - the current recursion depth, typically beginning at 0 when called on the root node.

visit

public void visit(NodeVisitor v)

Visits this node, then the namespace if provided, then the index expression.

Specified by:

visit in class AstNode

Parameters:

v - the object to call with this node and its children