// Copyright © 2004, 2013, Oracle and/or its affiliates. All rights reserved.
//
// MySQL for Visual Studio is licensed under the terms of the GPLv2
// <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most 
// MySQL Connectors. There are special exceptions to the terms and 
// conditions of the GPLv2 as it is applied to this software, see the 
// FLOSS License Exception
// <http://www.mysql.com/about/legal/licensing/foss-exception.html>.
//
// This program is free software; you can redistribute it and/or modify 
// it under the terms of the GNU General Public License as published 
// by the Free Software Foundation; version 2 of the License.
//
// This program is distributed in the hope that it will be useful, but 
// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 
// for more details.
//
// You should have received a copy of the GNU General Public License along 
// with this program; if not, write to the Free Software Foundation, Inc., 
// 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.VisualStudio.Debugger.Interop;
using Microsoft.VisualStudio;
using System.Diagnostics;

namespace MySql.Debugger.VisualStudio
{
  public class AD7DebugExpression : IDebugExpression2
  {
    private string _expr;
    private AD7StackFrame _stackFrame;

    public AD7DebugExpression( AD7StackFrame stackFrame, string expr )
    {
      _expr = expr;
      _stackFrame = stackFrame;
    }

    int IDebugExpression2.Abort()
    {
      return VSConstants.E_NOTIMPL;
    }

    int IDebugExpression2.EvaluateAsync(
      enum_EVALFLAGS dwFlags, 
      IDebugEventCallback2 pExprCallback)
    {
      // For now, no async evaluation supported.
      return VSConstants.E_NOTIMPL;
    }

    int IDebugExpression2.EvaluateSync(
      enum_EVALFLAGS dwFlags, 
      uint dwTimeout, 
      IDebugEventCallback2 pExprCallback, 
      out IDebugProperty2 ppResult)
    {
      if (MySql.Debugger.Debugger.GetTagHashCode(_stackFrame._rs.OwningRoutine.SourceCode) !=
        DebuggerManager.Instance.Debugger.CurrentScope.OwningRoutine.Hash)
      {
        // This should never happen.
        ppResult = null;
        return VSConstants.E_NOTIMPL;
      }
      AD7Property prop = new AD7Property( _expr,_stackFrame.Node, _stackFrame._rs, true );
      ppResult = prop;
      // Send evaluation complete event
      DebuggerManager.Instance._events.ExpressionEvalCompleted( 
        _stackFrame.Node, ( IDebugExpression2 )this, ( IDebugProperty2 )prop );
      return VSConstants.S_OK;
    }
  }
}
