com.google.gwt.dev.jjs.ast.JRunAsync Maven / Gradle / Ivy
/*
* Copyright 2011 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.gwt.dev.jjs.ast;
import com.google.gwt.dev.jjs.SourceInfo;
/**
* Represents a GWT.runAsync() call.
*/
public class JRunAsync extends JExpression {
private final String name;
private JExpression onSuccessCall;
private JExpression runAsyncCall;
private final int splitPoint;
public JRunAsync(SourceInfo info, int splitPoint, String name, JExpression runAsyncCall,
JExpression onSuccessCall) {
super(info);
this.splitPoint = splitPoint;
assert name != null;
this.name = name;
this.runAsyncCall = runAsyncCall;
this.onSuccessCall = onSuccessCall;
}
/**
* Based on either explicit class literal, or the jsni name of the containing
* method.
*/
public String getName() {
return name;
}
/**
* Returns a call expression akin to {@code callback.onSuccess()}.
* {@link com.google.gwt.dev.jjs.impl.ControlFlowAnalyzer} makes a synthetic
* visit to this call on the "far" side of the split point, ie, the code that
* runs when the fragment is through downloading.
*/
public JExpression getOnSuccessCall() {
return onSuccessCall;
}
/**
* Returns a call expression akin to
* {@code AsyncFragmentLoader.runAsync(7, callback)}. This represents the
* "near" side of the split point, calling into the machinery that queues up
* the fragment download.
*/
public JExpression getRunAsyncCall() {
return runAsyncCall;
}
/**
* Returns the split point number, 1-based.
*/
public int getSplitPoint() {
return splitPoint;
}
@Override
public JType getType() {
return JPrimitiveType.VOID;
}
@Override
public boolean hasSideEffects() {
return true;
}
public void traverse(JVisitor visitor, Context ctx) {
if (visitor.visit(this, ctx)) {
/*
* Normal code flow treats this node like the "near" side call into
* AsyncFragmentLoader. We only visit the onSuccessCall "far" side
* explicitly.
*/
runAsyncCall = visitor.accept(runAsyncCall);
}
visitor.endVisit(this, ctx);
}
/**
* Explcitly traverse the onSuccessCall.
*/
public void traverseOnSuccess(JVisitor visitor) {
onSuccessCall = visitor.accept(onSuccessCall);
}
}