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java.lang.Object org.mozilla.javascript.Node org.mozilla.javascript.ast.AstNode org.mozilla.javascript.ast.ArrayLiteral
public class ArrayLiteral
AST node for an Array literal. The elements list will always be
non-null
, although the list will have no elements if the Array literal
is empty.
Node type is Token.ARRAYLIT
.
ArrayLiteral : [ Elisionopt ] [ ElementList ] [ ElementList , Elisionopt ] ElementList : Elisionopt AssignmentExpression ElementList , Elisionopt AssignmentExpression Elision : , Elision ,
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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ArrayLiteral()
|
|
ArrayLiteral(int pos)
|
|
ArrayLiteral(int pos,
int len)
|
Method Summary | |
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void |
addElement(AstNode element)
Adds an element to the list, and sets its parent to this node. |
int |
getDestructuringLength()
Returns destructuring length |
AstNode |
getElement(int index)
Returns element at specified index. |
java.util.List<AstNode> |
getElements()
Returns the element list |
int |
getSize()
Returns the number of elements in this Array literal,
including empty elements. |
int |
getSkipCount()
Used by code generator. |
boolean |
isDestructuring()
Returns true if this node is in a destructuring position: a function parameter, the target of a variable initializer, the iterator of a for..in loop, etc. |
void |
setDestructuringLength(int destructuringLength)
Sets destructuring length. |
void |
setElements(java.util.List<AstNode> elements)
Sets the element list, and sets each element's parent to this node. |
void |
setIsDestructuring(boolean destructuring)
Marks this node as being a destructuring form - that is, appearing in a context such as for ([a, b] in ...) where it's the
target of a destructuring assignment. |
void |
setSkipCount(int count)
Used by code generator. |
java.lang.String |
toSource(int depth)
Emits source code for this node. |
void |
visit(NodeVisitor v)
Visits this node, then visits its element expressions in order. |
Methods inherited from class org.mozilla.javascript.ast.AstNode |
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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 ArrayLiteral()
public ArrayLiteral(int pos)
public ArrayLiteral(int pos, int len)
Method Detail |
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public java.util.List<AstNode> getElements()
EmptyExpression
nodes.public void setElements(java.util.List<AstNode> elements)
elements
- the element list. Can be null
.public void addElement(AstNode element)
element
- the element to add
java.lang.IllegalArgumentException
- if element is null
. To indicate
an empty element, use an EmptyExpression
node.public int getSize()
Array
literal,
including empty elements.
public AstNode getElement(int index)
index
- the index of the element to retrieve
java.lang.IndexOutOfBoundsException
- if the index is invalidpublic int getDestructuringLength()
public void setDestructuringLength(int destructuringLength)
for ([a,] in obj)
is legal,
but for ([a] in obj)
is not since we have both key and
value supplied. The difference is only meaningful in array literals
used in destructuring-assignment contexts.
public int getSkipCount()
public void setSkipCount(int count)
count
- the count of empty elementspublic void setIsDestructuring(boolean destructuring)
for ([a, b] in ...)
where it's the
target of a destructuring assignment.
setIsDestructuring
in interface DestructuringForm
public boolean isDestructuring()
isDestructuring
in interface DestructuringForm
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)
EmptyExpression
objects, so the callback will never be passed null
.
visit
in class AstNode
v
- the object to call with this node and its children
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