@Override
protected Collection<EmittedArtifact> doEmitCompilation(
TreeLogger logger, LinkerContext context, CompilationResult result)
throws UnableToCompleteException {
if (result.getJavaScript().length != 1) {
logger.branch(
TreeLogger.ERROR,
"The module must not have multiple fragments when using the "
+ getDescription()
+ " Linker.",
null);
throw new UnableToCompleteException();
}
return super.doEmitCompilation(logger, context, result);
}
@Override
protected EmittedArtifact emitSelectionScript(
TreeLogger logger, LinkerContext context, ArtifactSet artifacts)
throws UnableToCompleteException {
DefaultTextOutput out = new DefaultTextOutput(true);
// Emit the selection script.
// this for 'real browsers' to load the script
// we don't need this.
/*
String bootstrap = generateSelectionScript(logger, context, artifacts);
bootstrap = context.optimizeJavaScript(logger, bootstrap);
out.print(bootstrap);
out.newlineOpt();
*/
// we need a ref to the top level window
// it is referenced in the closure below
out.print("var $_window = this;");
out.newlineOpt();
// this is a hack to make backwards compatible
out.print("var __defineParser__ = function(){};");
out.newlineOpt();
// Emit the module's JS a closure.
out.newlineOpt();
out.print("(function () {");
out.newlineOpt();
out.print("var $gwt_version = \"" + About.getGwtVersionNum() + "\";");
out.newlineOpt();
out.print("var $wnd = $_window;");
out.newlineOpt();
out.print("var $doc = $wnd.document;");
out.newlineOpt();
out.print("var $moduleName, $moduleBase;");
out.newlineOpt();
out.print("var $stats = $wnd.__gwtStatsEvent ? function(a) {$wnd.__gwtStatsEvent(a)} : null;");
out.newlineOpt();
// Find the single CompilationResult
Set<CompilationResult> results = artifacts.find(CompilationResult.class);
if (results.size() != 1) {
logger.log(
TreeLogger.ERROR,
"The module must have exactly one distinct"
+ " permutation when using the "
+ getDescription()
+ " Linker.",
null);
throw new UnableToCompleteException();
}
CompilationResult result = results.iterator().next();
out.print("var $strongName = '" + result.getStrongName() + "';");
out.newlineOpt();
String[] js = result.getJavaScript();
if (js.length != 1) {
logger.log(
TreeLogger.ERROR,
"The module must not have multiple fragments when using the "
+ getDescription()
+ " Linker.",
null);
throw new UnableToCompleteException();
}
out.print(js[0]);
// Generate the call to tell the bootstrap code that we're ready to go.
out.newlineOpt();
// the original code setup an "onScriptLoad" event.
// Here we just do it
out.print("gwtOnLoad();");
out.newlineOpt();
out.print("})();");
out.newlineOpt();
return emitString(logger, out.toString(), context.getModuleName() + ".nocache.js");
}