public ExpressionParsingResult ParseExpression(string expression)
{
//the expression is either setter of method invoke
var result = new ExpressionParsingResult();
result.IsSetter = expression.IsSetExpression();
result.Expression = expression;
int bracketIndex = expression.IndexOfAny(new[] { '(', '=' });
string methodName = expression.Substring(0, bracketIndex).Trim();
string args = expression.Substring(bracketIndex).Replace("(", "").Replace(")", "").Replace("=", "").Trim();
string[] methodParts = methodName.Split('.');
if (methodParts.Length == 1 && result.IsSetter) //myVar=3
{
result.IsLocalVariable = true;
}
result.ExpressionValue = args;
string reference;
if (methodParts.Length == 1)
{
//varName
reference = methodParts[0];
}
else
{
//<<TypeName>|<CodeReference>>.<MethodName>
reference = string.Join(".", methodParts.Take(methodParts.Length - 1).ToArray());
}
try
{
if ((expression.IsInvokeExpression() || expression.IsSetExpression()) && methodParts.Length == 1)
{
MDbgValue callingObject = process.ResolveVariable("this", process.Threads.Active.CurrentFrame);
var mName = methodParts[0]; //either instance or static (e.g. "do()")
MDbgFunction func = process.ResolveFunctionNameFromScope(mName);
if (func != null) //method call
{
result.IsLocalVariable = false;
if (func.MethodInfo.IsStatic) //static method call
{
result.Instance = null;
result.Member = process.Threads.Active.CurrentFrame.Function.MethodInfo.DeclaringType.FullName + "." + mName;
}
else
{
result.Instance = callingObject.CorValue;
result.Member = mName;
}
}
else //variable assignment
{
var variable = process.ResolveVariable(reference, process.Threads.Active.CurrentFrame);
if (variable != null)//local variable assignment
{
result.IsLocalVariable = true;
result.Instance = variable.CorValue;
result.Member = reference;
}
else
{
if (callingObject == null) //static member assignment
{
result.IsLocalVariable = false;
result.Instance = null;
result.Member = process.Threads.Active.CurrentFrame.Function.MethodInfo.DeclaringType.FullName + "." + mName;
}
else //instance member assignment
{
result.IsLocalVariable = false;
result.Instance = callingObject.CorValue;
result.Member = methodParts.Last();
}
}
}
}
else
{
var instance = process.ResolveVariable(reference, process.Threads.Active.CurrentFrame);
if (instance != null)
{
result.Instance = instance.CorValue;
result.Member = methodParts.Last();
}
}
}
catch { }
if (result.Instance == null && result.Member == null)
{
result.Member = methodName;
}
CorEval eval = process.Threads.Active.CorThread.CreateEval();
// Get Variables
ArrayList vars = new ArrayList();
String arg;
if (args.Length != 0)
{
foreach (var item in args.Split(','))
{
arg = item.Trim();
CorValue v = process.m_engine.ParseExpression(arg, process, process.Threads.Active.CurrentFrame);
if (v == null)
{
throw new Exception("Cannot resolve expression or variable " + arg);
}
if (v is CorGenericValue)
{
vars.Add(v as CorValue);
}
else
{
CorHeapValue hv = v.CastToHeapValue();
if (hv != null)
{
// we cannot pass directly heap values, we need to pass reference to heap valus
CorReferenceValue myref = eval.CreateValue(CorElementType.ELEMENT_TYPE_CLASS, null).CastToReferenceValue();
myref.Value = hv.Address;
vars.Add(myref);
}
else
{
vars.Add(v);
}
}
}
}
result.Arguments = (CorValue[])vars.ToArray(typeof(CorValue));
return(result);
}
public CorValue VariableExpressionInvoke(ExpressionParsingResult info)
{
//based on MdbgCommands.SetCmd(string arguments)
if (info.Instance == null)
{
throw new Exception("Cannot resolve variable ");
}
if (info.Arguments == null || !info.Arguments.Any())
{
throw new Exception("Cannot resolve arguments ");
}
// Arguments has to be in the form of variable=varName, variable=value or variable=(<type>)value,
// where we use the ldasm naming convention (e.g. "int", "sbyte", "ushort", etc...) for <type>.
// Example inputs: var=myInt, var=45, var=(long)45
MDbgValue lsMVar = new MDbgValue(process, info.Instance);
CorValue val = info.Arguments.First();
CorGenericValue valGeneric = val as CorGenericValue;
bool bIsReferenceValue = val is CorReferenceValue;
if (lsMVar != null)
{
if (valGeneric != null)
{
CorValue lsVar = lsMVar.CorValue;
if (lsVar == null)
{
throw new Exception("cannot set constant values to unavailable variables");
}
// val is a primitive value
CorGenericValue lsGenVal = lsVar.CastToGenericValue();
if (lsGenVal == null)
{
throw new Exception("cannot set constant values to non-primitive values");
}
try
{
// We want to allow some type coercion. Eg, casting between integer precisions.
lsMVar.Value = val; // This may do type coercion
}
catch (MDbgValueWrongTypeException)
{
throw new Exception(String.Format("Type mismatch. Can't convert from {0} to {1}", val.Type, lsGenVal.Type));
}
}
else if (bIsReferenceValue)
{
//reget variable
lsMVar = process.ResolveVariable(info.Member, process.Threads.Active.CurrentFrame);
lsMVar.Value = val;
}
else
{
if (val.CastToHeapValue() != null)
{
throw new Exception("Heap values should be assigned only to debugger variables");
}
if (val.CastToGenericValue() != null)
{
lsMVar.Value = val.CastToGenericValue();
}
else
{
lsMVar.Value = val.CastToReferenceValue();
}
}
}
// as a last thing we do is to return new value of the variable
lsMVar = process.ResolveVariable(info.Member, process.Threads.Active.CurrentFrame);
return(lsMVar.CorValue);
}
public static void FuncEvalCmd(string arguments, IMDbgShell Shell, O2Thread.FuncVoidT1 <string> execOnEval)
{
try
{
var activeProcess = DI.o2MDbg.ActiveProcess; //Debugger.Processes.Active
const string appDomainOption = "ad";
var ap = new ArgParser(arguments, appDomainOption + ":1");
if (!(ap.Count >= 1))
{
throw new MDbgShellException("Not Enough arguments");
}
// Currently debugger picks first function -- we have not implementing resolving overloaded functions.
// Good example is Console.WriteLine -- there is 18 different types:
// 1) [06000575] Void WriteLine()
// 2) [06000576] Void WriteLine(Boolean)
// 3) [06000577] Void WriteLine(Char)
// 4) [06000578] Void WriteLine(Char[])
// 5) [06000579] Void WriteLine(Char[], Int32, Int32)
// 6) [0600057a] Void WriteLine(Decimal)
// 7) [0600057b] Void WriteLine(Double)
// 8) [0600057c] Void WriteLine(Single)
// 9) [0600057d] Void WriteLine(Int32)
// 10) [0600057e] Void WriteLine(UInt32)
// 11) [0600057f] Void WriteLine(Int64)
// 12) [06000580] Void WriteLine(UInt64)
// 13) [06000581] Void WriteLine(Object)
// 14) [06000582] Void WriteLine(String)
// 15) [06000583] Void WriteLine(String, Object)
// 16) [06000584] Void WriteLine(String, Object, Object)
// 17) [06000585] Void WriteLine(String, Object, Object, Object)
// 18) [06000586] Void WriteLine(String, Object, Object, Object, Object, ...)
// 19) [06000587] Void WriteLine(String, Object[])
//
CorAppDomain appDomain;
if (ap.OptionPassed(appDomainOption))
{
MDbgAppDomain ad = activeProcess.AppDomains[ap.GetOption(appDomainOption).AsInt];
if (ad == null)
{
throw new ArgumentException("Invalid Appdomain Number");
}
appDomain = ad.CorAppDomain;
}
else
{
appDomain = activeProcess.Threads.Active.CorThread.AppDomain;
}
MDbgFunction func = activeProcess.ResolveFunctionNameFromScope(ap.AsString(0), appDomain);
if (null == func)
{
throw new MDbgShellException(String.Format(CultureInfo.InvariantCulture, "Could not resolve {0}",
new Object[] { ap.AsString(0) }));
}
CorEval eval = activeProcess.Threads.Active.CorThread.CreateEval();
// Get Variables
var vars = new ArrayList();
String arg;
for (int i = 1; i < ap.Count; i++)
{
arg = ap.AsString(i);
CorValue v = Shell.ExpressionParser.ParseExpression2(arg, activeProcess,
activeProcess.Threads.Active.
CurrentFrame);
if (v == null)
{
throw new MDbgShellException("Cannot resolve expression or variable " + ap.AsString(i));
}
if (v is CorGenericValue)
{
vars.Add(v);
}
else
{
CorHeapValue hv = v.CastToHeapValue();
if (hv != null)
{
// we cannot pass directly heap values, we need to pass reference to heap valus
CorReferenceValue myref =
eval.CreateValue(CorElementType.ELEMENT_TYPE_CLASS, null).CastToReferenceValue();
myref.Value = hv.Address;
vars.Add(myref);
}
else
{
vars.Add(v);
}
}
}
eval.CallFunction(func.CorFunction, (CorValue[])vars.ToArray(typeof(CorValue)));
activeProcess.Go().WaitOne();
// now display result of the funceval
if (!(activeProcess.StopReason is EvalCompleteStopReason))
{
// we could have received also EvalExceptionStopReason but it's derived from EvalCompleteStopReason
Shell.IO.WriteOutput(MDbgOutputConstants.StdOutput,
"Func-eval not fully completed and debuggee has stopped");
Shell.IO.WriteOutput(MDbgOutputConstants.StdOutput,
"Result of funceval won't be printed when finished.");
}
else
{
eval = (activeProcess.StopReason as EvalCompleteStopReason).Eval;
Debug.Assert(eval != null);
CorValue cv = eval.Result;
if (cv != null)
{
var mv = new MDbgValue(activeProcess, cv);
if (execOnEval != null) // if this callback is set then execute
{
execOnEval(mv.GetStringValue(1));
return;
}
Shell.IO.WriteOutput(MDbgOutputConstants.StdOutput, "result = " + mv.GetStringValue(1));
if (cv.CastToReferenceValue() != null)
{
if (activeProcess.DebuggerVars.SetEvalResult(cv))
{
Shell.IO.WriteOutput(MDbgOutputConstants.StdOutput, "results saved to $result");
}
}
}
}
}
catch (Exception ex)
{
DI.log.ex(ex, "in FuncEvalCmd");
}
if (execOnEval != null) // need to call this here so that the sync AutoResetEvent is set
{
execOnEval(null);
}
}
