private object CoerceTypeAsNeeded(CommandParameterInternal argument, string parameterName, Type toType, ParameterCollectionTypeInformation collectionTypeInfo, object currentValue)
{
if (argument == null)
{
throw PSTraceSource.NewArgumentNullException("argument");
}
if (toType == null)
{
throw PSTraceSource.NewArgumentNullException("toType");
}
if (collectionTypeInfo == null)
{
collectionTypeInfo = new ParameterCollectionTypeInformation(toType);
}
object result = currentValue;
using (bindingTracer.TraceScope("COERCE arg to [{0}]", new object[] { toType }))
{
Type c = null;
try
{
if (IsNullParameterValue(currentValue))
{
return(this.HandleNullParameterForSpecialTypes(argument, parameterName, toType, currentValue));
}
c = currentValue.GetType();
if (toType.IsAssignableFrom(c))
{
bindingTracer.WriteLine("Parameter and arg types the same, no coercion is needed.", new object[0]);
return(currentValue);
}
bindingTracer.WriteLine("Trying to convert argument value from {0} to {1}", new object[] { c, toType });
if (toType == typeof(PSObject))
{
if ((this.command != null) && (currentValue == this.command.CurrentPipelineObject.BaseObject))
{
currentValue = this.command.CurrentPipelineObject;
}
bindingTracer.WriteLine("The parameter is of type [{0}] and the argument is an PSObject, so the parameter value is the argument value wrapped into an PSObject.", new object[] { toType });
return(LanguagePrimitives.AsPSObjectOrNull(currentValue));
}
if ((toType == typeof(string)) && (c == typeof(PSObject)))
{
PSObject obj3 = (PSObject)currentValue;
if (obj3 == AutomationNull.Value)
{
bindingTracer.WriteLine("CONVERT a null PSObject to a null string.", new object[0]);
return(null);
}
}
if (((toType == typeof(bool)) || (toType == typeof(SwitchParameter))) || (toType == typeof(bool?)))
{
Type type = null;
if (c == typeof(PSObject))
{
PSObject obj4 = (PSObject)currentValue;
currentValue = obj4.BaseObject;
if (currentValue is SwitchParameter)
{
SwitchParameter parameter = (SwitchParameter)currentValue;
currentValue = parameter.IsPresent;
}
type = currentValue.GetType();
}
else
{
type = c;
}
if (type == typeof(bool))
{
if (LanguagePrimitives.IsBooleanType(toType))
{
return(ParserOps.BoolToObject((bool)currentValue));
}
return(new SwitchParameter((bool)currentValue));
}
if (type == typeof(int))
{
if (((int)LanguagePrimitives.ConvertTo(currentValue, typeof(int), CultureInfo.InvariantCulture)) != 0)
{
if (LanguagePrimitives.IsBooleanType(toType))
{
return(ParserOps.BoolToObject(true));
}
return(new SwitchParameter(true));
}
if (LanguagePrimitives.IsBooleanType(toType))
{
return(ParserOps.BoolToObject(false));
}
return(new SwitchParameter(false));
}
if (LanguagePrimitives.IsNumeric(Type.GetTypeCode(type)))
{
double num = (double)LanguagePrimitives.ConvertTo(currentValue, typeof(double), CultureInfo.InvariantCulture);
if (num == 0.0)
{
if (LanguagePrimitives.IsBooleanType(toType))
{
return(ParserOps.BoolToObject(false));
}
return(new SwitchParameter(false));
}
if (LanguagePrimitives.IsBooleanType(toType))
{
return(ParserOps.BoolToObject(true));
}
return(new SwitchParameter(true));
}
ParameterBindingException exception = new ParameterBindingException(ErrorCategory.InvalidArgument, this.InvocationInfo, this.GetErrorExtent(argument), parameterName, toType, c, "ParameterBinderStrings", "CannotConvertArgument", new object[] { type, "" });
throw exception;
}
if ((collectionTypeInfo.ParameterCollectionType == ParameterCollectionType.ICollectionGeneric) || (collectionTypeInfo.ParameterCollectionType == ParameterCollectionType.IList))
{
object obj5 = PSObject.Base(currentValue);
if (obj5 != null)
{
ConversionRank conversionRank = LanguagePrimitives.GetConversionRank(obj5.GetType(), toType);
if ((((conversionRank == ConversionRank.Constructor) || (conversionRank == ConversionRank.ImplicitCast)) || (conversionRank == ConversionRank.ExplicitCast)) && LanguagePrimitives.TryConvertTo(currentValue, toType, Thread.CurrentThread.CurrentCulture, out result))
{
return(result);
}
}
}
if (collectionTypeInfo.ParameterCollectionType != ParameterCollectionType.NotCollection)
{
bindingTracer.WriteLine("ENCODING arg into collection", new object[0]);
bool coercionRequired = false;
return(this.EncodeCollection(argument, parameterName, collectionTypeInfo, toType, currentValue, collectionTypeInfo.ElementType != null, out coercionRequired));
}
if (((((GetIList(currentValue) != null) && (toType != typeof(object))) && ((toType != typeof(PSObject)) && (toType != typeof(PSListModifier)))) && ((!toType.IsGenericType || (toType.GetGenericTypeDefinition() != typeof(PSListModifier <>))) && (!toType.IsGenericType || (toType.GetGenericTypeDefinition() != typeof(FlagsExpression <>))))) && !toType.IsEnum)
{
throw new NotSupportedException();
}
bindingTracer.WriteLine("CONVERT arg type to param type using LanguagePrimitives.ConvertTo", new object[0]);
bool flag2 = false;
if (this.context.LanguageMode == PSLanguageMode.ConstrainedLanguage)
{
object obj6 = PSObject.Base(currentValue);
bool flag3 = obj6 is PSObject;
bool flag4 = (obj6 != null) && typeof(IDictionary).IsAssignableFrom(obj6.GetType());
flag2 = ((((PSLanguageMode)this.Command.CommandInfo.DefiningLanguageMode) == PSLanguageMode.FullLanguage) && !flag3) && !flag4;
}
try
{
if (flag2)
{
this.context.LanguageMode = PSLanguageMode.FullLanguage;
}
result = LanguagePrimitives.ConvertTo(currentValue, toType, Thread.CurrentThread.CurrentCulture);
}
finally
{
if (flag2)
{
this.context.LanguageMode = PSLanguageMode.ConstrainedLanguage;
}
}
bindingTracer.WriteLine("CONVERT SUCCESSFUL using LanguagePrimitives.ConvertTo: [{0}]", new object[] { (result == null) ? "null" : result.ToString() });
return(result);
}
catch (NotSupportedException exception2)
{
bindingTracer.TraceError("ERROR: COERCE FAILED: arg [{0}] could not be converted to the parameter type [{1}]", new object[] { (result == null) ? "null" : result, toType });
ParameterBindingException exception3 = new ParameterBindingException(exception2, ErrorCategory.InvalidArgument, this.InvocationInfo, this.GetErrorExtent(argument), parameterName, toType, c, "ParameterBinderStrings", "CannotConvertArgument", new object[] { (result == null) ? "null" : result, exception2.Message });
throw exception3;
}
catch (PSInvalidCastException exception4)
{
object[] args = new object[] { result ?? "null", toType };
bindingTracer.TraceError("ERROR: COERCE FAILED: arg [{0}] could not be converted to the parameter type [{1}]", args);
ParameterBindingException exception5 = new ParameterBindingException(exception4, ErrorCategory.InvalidArgument, this.InvocationInfo, this.GetErrorExtent(argument), parameterName, toType, c, "ParameterBinderStrings", "CannotConvertArgumentNoMessage", new object[] { exception4.Message });
throw exception5;
}
}
return(result);
}
