Description Marshall Scorcio 2011-10-25 11:35:21 EDT

I recently upgraded to Eclipse 3.7.1, JSDT 1.3.1.v201108102009, and Eclipse WDT 3.3.1.v201107072200. After the upgrade I've been getting "'Requesting JavaScript AST from selection' has encountered a problem" dialogs when editing JavaScript files. 

I am able to consistently reproduce a specific case where clicking on "return" in a function that returns a string literal will cause a NullPointerException. It seems to only happen the first time you click on "return" after opening the file.

Steps to Reproduce:
1. In a JavaScript project, create a file named foo.js with the following contents:
function foo() {
  return "bar";
}

2. Open up foo.js with the JavaScript editor.

3. Click on the keyword "return".

Actual Result:
A dialog appears with the title "Problem Occurred" is displayed that says:
An internal error occurred during: "Requesting JavaScript AST from selection".
java.lang.NullPointerException

Expected Result:
No error should occur.