class LineNumberCheck extends java.lang.Object implements NodeTraversal.Callback, CompilerPass
Modifier and Type | Field and Description |
---|---|
private AbstractCompiler |
compiler |
(package private) static DiagnosticType |
MISSING_LINE_INFO |
private boolean |
requiresLineNumbers |
Constructor and Description |
---|
LineNumberCheck(AbstractCompiler compiler) |
Modifier and Type | Method and Description |
---|---|
void |
process(Node externs,
Node root)
Process the JS with root node root.
|
void |
setCheckSubTree(Node root) |
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).
|
static final DiagnosticType MISSING_LINE_INFO
private final AbstractCompiler compiler
private boolean requiresLineNumbers
LineNumberCheck(AbstractCompiler compiler)
public void setCheckSubTree(Node root)
public void process(Node externs, Node root)
CompilerPass
process
in interface CompilerPass
externs
- Top of external JS treeroot
- Top of JS treepublic 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