ClassNode stored = classes.get(name);
if (stored != null && stored != node) {
// we have a duplicate class!
// One possibility for this is, that we declared a script and a
// class in the same file and named the class like the file
SourceUnit nodeSource = node.getModule().getContext();
SourceUnit storedSource = stored.getModule().getContext();
String txt = "Invalid duplicate class definition of class " + node.getName() + " : ";
if (nodeSource == storedSource) {
// same class in same source
txt += "The source " + nodeSource.getName() + " contains at least two definitions of the class " + node.getName() + ".\n";
if (node.isScriptBody() || stored.isScriptBody()) {
txt += "One of the classes is a explicit generated class using the class statement, the other is a class generated from" +
" the script body based on the file name. Solutions are to change the file name or to change the class name.\n";
}
} else {
txt += "The sources " + nodeSource.getName() + " and " + storedSource.getName() + " are containing both a class of the name " + node.getName() + ".\n";
}
nodeSource.getErrorCollector().addErrorAndContinue(
new SyntaxErrorMessage(new SyntaxException(txt, node.getLineNumber(), node.getColumnNumber()), nodeSource)
);
}