[FLEX-23873] Flex debugger: improve expression evaluation capabilities (E4X)

• Type: Task
• Status: Closed
• Priority: Minor
• Resolution: Later
• Affects Version/s: Adobe Flex SDK 4.0 (Release)
• Component/s: FDB - Debugger
• Environment: Affected OS(s): All OS Platforms; Affected OS(s): All OS Platforms; Language Found: English
• Assignee: Adobe JIRA
• Reporter: Adobe JIRA
• Created: 30/Apr/10 10:54
• Updated: 26/Aug/10 16:43
• Resolved: 13/Jul/10 11:53

Description

Debug following code using command line fdb tool and stop at breakpoint at function closing brace

public namespace svgns = "http://www.w3.org/2000/svg";
private function init():void {
  var xmlWithNameSpace:XML =
    <file xmlns="http://MyNamespace">
      <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 10 20" version="1.1">
        <polyline points="1,2 3,4"/>
      </svg>
    </file>;
  var valid1:XMLList = xmlWithNameSpace.*::svg;
  var valid2:XMLList = xmlWithNameSpace.svgns::svg;
  var valid3:XMLList = xmlWithNameSpace..svgns::svg;
}

Debugger is able to print values of valid1, valid2, valid3 variables. But it is unable to evaluate respective expressions:

fdb> print xmlWithNameSpace.*::svg
Unsupported expression
Expression could not be evaluated.

As far as I could see is is because lots of evaluate(...) methods of class flash.tools.debugger.expression.DebuggerEvaluator are not implemented. In my example evaluation fails at line DebuggerEvaluator.java:174

    public Value evaluate(macromedia.asc.util.Context cx, QualifiedIdentifierNode node)
    {
        throw new ExpressionEvaluatorException(ASTBuilder.getLocalizationManager().getLocalizedTextString("unsupportedExpression")); //$NON-NLS-1$
    }

Please improve debugger evaluation capabilities.