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java.lang.Object org.mozilla.javascript.Node org.mozilla.javascript.ast.AstNode org.mozilla.javascript.ast.ElementGet
public class ElementGet
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 |
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Nested classes/interfaces inherited from class org.mozilla.javascript.ast.AstNode |
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AstNode.DebugPrintVisitor, AstNode.PositionComparator |
Nested classes/interfaces inherited from class org.mozilla.javascript.Node |
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Node.NodeIterator |
Field Summary |
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Fields inherited from class org.mozilla.javascript.ast.AstNode |
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length, parent, position |
Constructor Summary | |
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ElementGet()
|
|
ElementGet(AstNode target,
AstNode element)
|
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ElementGet(int pos)
|
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ElementGet(int pos,
int len)
|
Method Summary | |
---|---|
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, 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 org.mozilla.javascript.Node |
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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 |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public ElementGet()
public ElementGet(int pos)
public ElementGet(int pos, int len)
public ElementGet(AstNode target, AstNode element)
Method Detail |
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public AstNode getTarget()
public void setTarget(AstNode target)
target
- expression evaluating to the object upon which
to do the element lookup
java.lang.IllegalArgumentException
- if target is null
public AstNode getElement()
public void setElement(AstNode element)
java.lang.IllegalArgumentException
- if element is null
public int getLb()
public void setLb(int lb)
public int getRb()
public void setRb(int rb)
public void setParens(int lb, int rb)
public java.lang.String toSource(int depth)
AstNode
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.
toSource
in class AstNode
depth
- the current recursion depth, typically beginning at 0
when called on the root node.public void visit(NodeVisitor v)
visit
in class AstNode
v
- the object to call with this node and its children
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