ArrayIndexOutOfBoundsException with wildcard import and package name in super class

[msteinbeck]

The following example causes an ArrayIndexOutOfBoundsException while create a spoon model:

import antlr.*;

public class FindImportBug extends antlr.LLkParser {
    public static void main(final String[] args) {}
}

The model is created as follows:
(with projectPath being the path to the FindImportBug.java file)

Launcher runLaunch = new Launcher();
runLaunch.getEnvironment().setNoClasspath(true);
runLaunch.addInputResource(projectPath);
runLaunch.buildModel();

I think this issue could be solved by checking the length chars. That is, findImport(chars, false, false); is skipped if chars.length == 0 .

[msteinbeck]

A potential fix is given in: #760