org.mozilla.javascript.ast

Class ElementGet

java.lang.Object

org.mozilla.javascript.Node

org.mozilla.javascript.ast.AstNode

org.mozilla.javascript.ast.ElementGet

All Implemented Interfaces:

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

public class ElementGet
extends AstNode

AST node for an indexed property reference, such as foo['bar'] or foo[2]. This is sometimes called an "element-get" operation, hence the name of the node.

Node type is Token.GETELEM.

The node bounds extend from the beginning position of the target through the closing right-bracket. In the presence of a syntax error, the right bracket position is -1, and the node ends at the end of the element expression.

Nested Class Summary

Nested classes/interfaces inherited from class org.mozilla.javascript.ast.AstNode

AstNode.PositionComparator

Nested classes/interfaces inherited from class org.mozilla.javascript.Node

Node.NodeIterator

Field Summary

Fields inherited from class org.mozilla.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, FUNCTION_PROP, GENERATOR_END_PROP, INCRDECR_PROP, ISNUMBER_PROP, JSDOC_PROP, LABEL_ID_PROP, LAST_PROP, LEFT, LOCAL_BLOCK_PROP, LOCAL_PROP, MEMBER_TYPE_PROP, NAME_PROP, NON_SPECIALCALL, OBJECT_IDS_PROP, PARENTHESIZED_PROP, POST_FLAG, PROPERTY_FLAG, REGEXP_PROP, RIGHT, SKIP_INDEXES_PROP, SPECIALCALL_EVAL, SPECIALCALL_PROP, SPECIALCALL_WITH, TARGETBLOCK_PROP, VARIABLE_PROP

Constructor Summary

Constructors

Constructor and Description
ElementGet()
ElementGet(AstNode target, AstNode element)
ElementGet(int pos)
ElementGet(int pos, int len)

Method Summary

Modifier and Type	Method and Description
AstNode	getElement() Returns the element being accessed
int	getLb() Returns left bracket position
int	getRb() Returns right bracket position, -1 if missing
AstNode	getTarget() Returns the object on which the element is being fetched.
void	setElement(AstNode element) Sets the element being accessed, and sets its parent to this node.
void	setLb(int lb) Sets left bracket position
void	setParens(int lb, int rb)
void	setRb(int rb) Sets right bracket position, -1 if not present
void	setTarget(AstNode target) Sets target object, and sets its parent to this node.
java.lang.String	toSource(int depth) Emits source code for this node.
void	visit(NodeVisitor v) Visits this node, the target, and the index expression.

Methods inherited from class org.mozilla.javascript.ast.AstNode

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

Methods inherited from class org.mozilla.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

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

ElementGet

public ElementGet()

ElementGet

public ElementGet(int pos)

ElementGet

public ElementGet(int pos,
                  int len)

ElementGet

public ElementGet(AstNode target,
                  AstNode element)

Method Detail

getTarget

public AstNode getTarget()

Returns the object on which the element is being fetched.

setTarget

public void setTarget(AstNode target)

Sets target object, and sets its parent to this node.

Parameters:

target - expression evaluating to the object upon which to do the element lookup

Throws:

java.lang.IllegalArgumentException - if target is null

getElement

public AstNode getElement()

Returns the element being accessed

setElement

public void setElement(AstNode element)

Sets the element being accessed, and sets its parent to this node.

Throws:

java.lang.IllegalArgumentException - if element is null

getLb

public int getLb()

Returns left bracket position

setLb

public void setLb(int lb)

Sets left bracket position

getRb

public int getRb()

Returns right bracket position, -1 if missing

setRb

public void setRb(int rb)

Sets right bracket position, -1 if not present

setParens

public void setParens(int lb,
                      int rb)

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, the target, and the index expression.

Specified by:

visit in class AstNode

Parameters:

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