class RemoveUnusedClassProperties extends java.lang.Object implements CompilerPass, NodeTraversal.Callback
Modifier and Type | Field and Description |
---|---|
private java.util.List<Node> |
candidates |
private AbstractCompiler |
compiler |
private boolean |
removeUnusedConstructorProperties |
private java.util.Set<java.lang.String> |
used |
Constructor and Description |
---|
RemoveUnusedClassProperties(AbstractCompiler compiler,
boolean removeUnusedConstructorProperties) |
Modifier and Type | Method and Description |
---|---|
private boolean |
isConstructor(Node n) |
private static boolean |
isPinningPropertyUse(Node n) |
private boolean |
isRemovablePropertyDefinition(Node n) |
void |
process(Node externs,
Node root)
Process the JS with root node root.
|
private void |
removeUnused() |
boolean |
shouldTraverse(NodeTraversal t,
Node n,
Node parent)
Visits a node in pre order (before visiting its children) and decides
whether this node's children should be traversed.
|
void |
visit(NodeTraversal t,
Node n,
Node parent)
Visits a node in postorder (after its children have been visited).
|
private final AbstractCompiler compiler
private java.util.Set<java.lang.String> used
private java.util.List<Node> candidates
private final boolean removeUnusedConstructorProperties
RemoveUnusedClassProperties(AbstractCompiler compiler, boolean removeUnusedConstructorProperties)
public void process(Node externs, Node root)
CompilerPass
process
in interface CompilerPass
externs
- Top of external JS treeroot
- Top of JS treeprivate void removeUnused()
public boolean shouldTraverse(NodeTraversal t, Node n, Node parent)
NodeTraversal.Callback
Visits a node in pre order (before visiting its children) and decides
whether this node's children should be traversed. If children are
traversed, they will be visited by
NodeTraversal.Callback.visit(NodeTraversal, Node, Node)
in postorder.
Implementations can have side effects (e.g. modifying the parse tree).
shouldTraverse
in interface NodeTraversal.Callback
public void visit(NodeTraversal t, Node n, Node parent)
NodeTraversal.Callback
Visits a node in postorder (after its children have been visited).
A node is visited only if all its parents should be traversed
(NodeTraversal.Callback.shouldTraverse(NodeTraversal, Node, Node)
).
Implementations can have side effects (e.g. modifying the parse tree).
visit
in interface NodeTraversal.Callback
private boolean isRemovablePropertyDefinition(Node n)
private boolean isConstructor(Node n)
private static boolean isPinningPropertyUse(Node n)