/// <summary>
/// Walk parse tree starting at the rule the walkRuleSelector supplies.
/// </summary>
/// <param name="ast">ast to walk</param>
/// <param name="listener">walker instance</param>
/// <param name="expression">the expression we are walking in string form</param>
/// <param name="eplStatementForErrorMsg">statement text for error messages</param>
public static void Walk(
ITree ast,
EPLTreeWalkerListener listener,
string expression,
string eplStatementForErrorMsg)
{
// Walk tree
if (Log.IsDebugEnabled)
{
Log.Debug(".walk Walking AST using walker " + listener.GetType().Name);
}
var walker = new ParseTreeWalker();
walker.Walk(listener, (IParseTree) ast);
listener.End();
}
/// <summary>
/// Walk parse tree starting at the rule the walkRuleSelector supplies.
/// </summary>
/// <param name="ast">ast to walk</param>
/// <param name="listener">walker instance</param>
/// <param name="expression">the expression we are walking in string form</param>
/// <param name="eplStatementForErrorMsg">statement text for error messages</param>
public static void Walk(ITree ast, EPLTreeWalkerListener listener, String expression, String eplStatementForErrorMsg)
{
// Walk tree
try
{
if (Log.IsDebugEnabled)
{
Log.Debug(".walk Walking AST using walker " + listener.GetType().FullName);
}
var walker = new ParseTreeWalker();
walker.Walk(listener, (IParseTree)ast);
listener.End();
}
catch (Exception e)
{
Log.Info("Error walking statement [" + expression + "]", e);
throw;
}
}