public class ElementGet extends AstNode
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.
AstNode.DebugPrintVisitor, AstNode.PositionComparatorNode.NodeIteratorinlineComment, length, parent, positionARROW_FUNCTION_PROP, 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 and Description |
|---|
ElementGet() |
ElementGet(AstNode target,
AstNode element) |
ElementGet(int pos) |
ElementGet(int pos,
int len) |
| 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.
|
addChild, assertNotNull, codeBug, compareTo, debugPrint, depth, getAbsolutePosition, getAstRoot, getEnclosingFunction, getEnclosingScope, getInlineComment, getLength, getLineno, getParent, getPosition, hasSideEffects, makeIndent, operatorToString, printList, setBounds, setInlineComment, setLength, setParent, setPosition, setRelative, shortName, toSourceaddChildAfter, 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, toStringTreepublic ElementGet()
public ElementGet(int pos)
public ElementGet(int pos,
int len)
public AstNode getTarget()
public void setTarget(AstNode target)
target - expression evaluating to the object upon which
to do the element lookupjava.lang.IllegalArgumentException - if target is nullpublic AstNode getElement()
public void setElement(AstNode element)
java.lang.IllegalArgumentException - if element is nullpublic 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.
public void visit(NodeVisitor v)