public class ArrayLiteral extends AstNode implements DestructuringForm
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 ,AstNode.DebugPrintVisitor, AstNode.PositionComparatorNode.NodeIteratorATTRIBUTE_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 |
|---|
ArrayLiteral() |
ArrayLiteral(int pos) |
ArrayLiteral(int pos,
int len) |
| Modifier and Type | Method and Description |
|---|---|
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.
|
addChild, assertNotNull, codeBug, compareTo, debugPrint, depth, getAbsolutePosition, getAstRoot, getEnclosingFunction, getEnclosingScope, getLength, getLineno, getParent, getPosition, hasSideEffects, makeIndent, operatorToString, printList, setBounds, 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 ArrayLiteral()
public ArrayLiteral(int pos)
public ArrayLiteral(int pos,
int len)
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 addjava.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 retrievejava.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 DestructuringFormpublic boolean isDestructuring()
isDestructuring in interface DestructuringFormpublic 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)
EmptyExpression
objects, so the callback will never be passed null.