private Object Eval(
DynLanContext DynLanContext)
{
while (true)
{
if (DynLanContext.IsFinished)
{
if (DynLanContext.Error != null)
{
throw DynLanContext.Error;
}
break;
}
try
{
Boolean result = DynLan.Evaluator.ContextEvaluator.
ExecuteNext(DynLanContext);
if (DynLanContext.BreakEveryLine && result)
{
break;
}
}
catch
{
throw;
}
}
return(DynLanContext.Result);
}
public virtual Boolean SetValue(DynLanContext EvalContext, String Name, Object Value)
{
#if CASE_INSENSITIVE
Name = Name.ToUpper();
#endif
DynLanContext DynLanContext = EvalContext as DynLanContext;
if (DynLanContext == null)
{
return(false);
}
DynLanContext.CurrentState.Object[Name] = Value;
return(true);
}
private static DynLanContext CreateContext(
DynLanCodeLines Lines,
IDictionary <String, Object> Values,
Boolean BreakEveryLine,
Boolean CopyParameters)
{
DynLanContext runContext = new DynLanContext(
new DynLanProgram()
{
ID = Guid.Empty,
Lines = Lines
});
runContext.BreakEveryLine = BreakEveryLine;
if (runContext.CurrentState.Program.Lines.Count > 0)
{
runContext.CurrentState.CurrentLineID = runContext.CurrentState.Program.Lines[0].ID;
}
if (Values != null)
{
if (CopyParameters)
{
if (Values is ICloneShallow)
{
runContext.CurrentState.Object.DynamicValues = (IDictionary <String, Object>)((ICloneShallow)Values).CloneShallow();
}
else
{
runContext.CurrentState.Object.DynamicValues = new DictionaryCloneShallow <String, Object>(Values);
}
}
else
{
runContext.CurrentState.Object.DynamicValues = Values;
}
}
return(runContext);
}
//////////////////////////////////////////////
public virtual ExpressionValue GetValue(
DynLanContext EvalContext,
String Name,
Boolean SeekForExtenders,
Boolean SeekForMethods,
Boolean SeekInContexts)
{
#if CASE_INSENSITIVE
Name = Name.ToUpper();
#endif
DynLanContext DynLanContext = EvalContext as DynLanContext;
if (DynLanContext == null)
{
return(null);
}
// szukanie extender'a
if (SeekForExtenders)
{
ExpressionExtenderInfo extender = BuildinExtenders.FindByName(Name);
if (extender != null)
{
return(new ExpressionValue(extender));
}
}
if (SeekInContexts)
{
// szukanie zmiennej w lokalnym kontekście
if (DynLanContext.CurrentState != DynLanContext.GlobalState)
{
// szukanie zmiennej w metodach gdzie została zadeklarowana metoda
if (DynLanContext.Stack != null)
{
#if !NET20
DynLanState currentState = DynLanContext.
Stack.
LastOrDefault();
#else
DynLanState currentState = Linq2.LastOrDefault(
DynLanContext.Stack);
#endif
DynLanMethod method = currentState == null ? null :
currentState.Program as DynLanMethod;
if (method != null)
{
for (Int32 i = DynLanContext.Stack.Count - 2; i >= 0; i--)
{
DynLanState state = DynLanContext.Stack[i];
DynLanMethod thisMethod = state.Program as DynLanMethod;
DynLanObject thisObject = state.Object;
if (thisMethod == null)
{
break;
}
if (thisMethod != null &&
thisMethod.Methods != null &&
thisMethod.Methods.Contains(method))
{
if (thisObject != null &&
thisObject.Contains(Name))
{
return(new ExpressionValue(thisObject[Name]));
}
}
else
{
break;
}
method = thisMethod;
}
}
}
if (DynLanContext.CurrentState.Object != null &&
DynLanContext.CurrentState.Object.Contains(Name))
{
return(new ExpressionValue(DynLanContext.CurrentState.Object[Name]));
}
}
// szukanie zmiennej w globalnym kontekście
if (DynLanContext.GlobalState.Object != null &&
DynLanContext.GlobalState.Object.Contains(Name))
{
return(new ExpressionValue(DynLanContext.GlobalState.Object[Name]));
}
}
// przeniesione na dło aby metody i zmiennej których nazwy pokrywaja sie z globalnymi
// mobly byc używane
// szukanie metody
if (SeekForMethods)
{
ExpressionMethodInfo method = BuildinMethods.FindByName(Name);
if (method != null)
{
return(new ExpressionValue(method));
}
}
/*for (var i = DynLanContext.Stack.IndexOf(DynLanContext.Current); i >= 0; i--)
* {
* DynLanState context = DynLanContext.Stack[i];
*
* if ((context == DynLanContext.Current || context.ContextType == DynLanContextType.GLOBAL) &&
* context.Object != null &&
* context.Object.Contains(Name))
* {
* return new ExpressionValue(context.Object[Name]);
* }
* }*/
// szukanie po globalnych zmiennych
/*if (DynLanContext.GlobalContext.ContextType == DynLanContextType.GLOBAL)
* {
* if (DynLanContext.GlobalContext.Object.Contains(Name))
* return new ExpressionValue(DynLanContext.GlobalContext.Object[Name]);
* }*/
return(null);
}
//////////////////////////////////////////////////
public Object Eval()
{
using (DynLanContext context = this.CreateContext(null))
return(Eval(context));
}
public Object Eval(
IDictionary <String, Object> Parameters)
{
using (DynLanContext context = this.CreateContext(Parameters))
return(Eval(context));
}