Package com.google.javascript.jscomp

Class Es6RewriteScriptsToModules

java.lang.Object

com.google.javascript.jscomp.NodeTraversal.AbstractPreOrderCallback

com.google.javascript.jscomp.Es6RewriteScriptsToModules

All Implemented Interfaces:

CompilerPass, NodeTraversal.Callback

public final class Es6RewriteScriptsToModules
extends NodeTraversal.AbstractPreOrderCallback
implements CompilerPass

Rewrites a script which was imported as a module into an ES6 module.

Constructor Summary

Constructors

Constructor	Description
Es6RewriteScriptsToModules(AbstractCompiler compiler)	Creates a new Es6RewriteModules instance which can be used to rewrite ES6 modules to a concatenable form.

Method Summary

Modifier and Type	Method	Description
void	process(Node externs, Node root)	Process the JS with root node root.
boolean	shouldTraverse(NodeTraversal nodeTraversal, Node n, Node parent)	Visits a node in preorder (before its children) and decides whether the node and its children should be traversed.

Methods inherited from class com.google.javascript.jscomp.NodeTraversal.AbstractPreOrderCallback

visit

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Es6RewriteScriptsToModules

public Es6RewriteScriptsToModules(AbstractCompiler compiler)

Creates a new Es6RewriteModules instance which can be used to rewrite ES6 modules to a concatenable form.

Method Details

process

public void process(Node externs,
 Node root)

Description copied from interface: CompilerPass

Process the JS with root node root. Can modify the contents of each Node tree

Specified by:

process in interface CompilerPass

Parameters:

externs - Top of external JS tree

root - Top of JS tree

shouldTraverse

public boolean shouldTraverse(NodeTraversal nodeTraversal,
 Node n,
 Node parent)

Description copied from interface: NodeTraversal.Callback

Visits a node in preorder (before its children) and decides whether the node and its children should be traversed.

If this method returns true, the node will be visited by NodeTraversal.Callback.visit(NodeTraversal, Node, Node) in postorder and its children will be visited by both NodeTraversal.Callback.shouldTraverse(NodeTraversal, Node, Node) in preorder and by NodeTraversal.Callback.visit(NodeTraversal, Node, Node) in postorder.

If this method returns false, the node will not be visited by NodeTraversal.Callback.visit(NodeTraversal, Node, Node) and its children will neither be visited by NodeTraversal.Callback.shouldTraverse(NodeTraversal, Node, Node) nor NodeTraversal.Callback.visit(NodeTraversal, Node, Node).

Siblings are always visited left-to-right.

Implementations can have side-effects (e.g. modify the parse tree). Removing the current node is legal, but removing or reordering nodes above the current node may cause nodes to be visited twice or not at all.

Specified by:

shouldTraverse in interface NodeTraversal.Callback

Parameters:

nodeTraversal - The current traversal.

n - The current node.

parent - The parent of the current node.

Returns:

whether the children of this node should be visited