com.google.javascript.jscomp

Class Es6RewriteScriptsToModules

java.lang.Object

com.google.javascript.jscomp.NodeTraversal.AbstractPreOrderCallback

com.google.javascript.jscomp.Es6RewriteScriptsToModules

All Implemented Interfaces:

CompilerPass, HotSwapCompilerPass, NodeTraversal.Callback

public final class Es6RewriteScriptsToModules
extends NodeTraversal.AbstractPreOrderCallback
implements HotSwapCompilerPass

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

Constructor Summary

Constructors

Constructor and 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 and Description
void	hotSwapScript(Node scriptNode, Node originalRoot) Process the JS with root node root.
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 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 Detail

Es6RewriteScriptsToModules

public Es6RewriteScriptsToModules(AbstractCompiler compiler)

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

Method Detail

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

hotSwapScript

public void hotSwapScript(Node scriptNode,
                          Node originalRoot)

Description copied from interface: HotSwapCompilerPass

Process the JS with root node root. This is supposed to be significantly faster compared to corresponding full-compiler passes.

Specified by:

hotSwapScript in interface HotSwapCompilerPass

Parameters:

scriptNode - Root node corresponding to the file that is modified, should be of type Token.SCRIPT.

originalRoot - Root node corresponding to the original version of the file that is modified. Should be of type token.SCRIPT.

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 its children should be traversed. If the children should be traversed, they will be visited by NodeTraversal.Callback.shouldTraverse(NodeTraversal, Node, Node) in preorder and by NodeTraversal.Callback.visit(NodeTraversal, Node, Node) in postorder.

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