public IEnumerable <Expression> GetParametersExpressions(IBuildContext buildContext)
{
for (var parameterPosition = 0; parameterPosition < _parametersExpressions.Length; parameterPosition++)
{
var param = _parameters[parameterPosition];
if (param.IsOut)
{
if (param.ParameterType.HasElementType)
{
var type = param.ParameterType.GetElementType();
if (type != null)
{
var outParam = Expression.Parameter(type);
buildContext.AddParameter(outParam);
yield return(outParam);
continue;
}
}
}
var expression = _parametersExpressions[parameterPosition];
if (expression != null)
{
yield return(expression);
}
else
{
var key = new Key(param.ParameterType);
Expression defaultExpression;
if (param.IsOptional)
{
if (param.DefaultValue == null)
{
defaultExpression = Expression.Default(param.ParameterType);
}
else
{
defaultExpression = Expression.Constant(param.DefaultValue);
}
}
else
{
defaultExpression = null;
}
yield return(buildContext.CreateChild(key, buildContext.Container).CreateExpression(defaultExpression));
}
}
}
