public AstFunction(string name, int index, AstParameters @params, bool varargs)
{
this.name = name;
this.index = index;
this.@params = @params;
this.varargs = varargs;
}
protected internal AstFunction Function(string name, AstParameters @params)
{
if (functions.Count == 0)
{
functions = new List <IFunctionNode>(4);
}
AstFunction function = CreateAstFunction(name, functions.Count, @params);
functions.Add(function);
return(function);
}
protected internal virtual AstMethod CreateAstMethod(AstProperty property, AstParameters @params)
{
return(new AstMethod(property, @params));
}
protected internal virtual AstFunction CreateAstFunction(string name, int index, AstParameters @params)
{
return(new AstFunction(name, index, @params, context.IsEnabled(Builder.Feature.VARARGS)));
}
/// <summary>
/// Invoke method. </summary>
/// <param name="bindings"> </param>
/// <param name="context"> </param>
/// <param name="base"> </param>
/// <param name="method"> </param>
/// <returns> method result </returns>
/// <exception cref="TargetInvocationException"> </exception>
/// <exception cref="AccessViolationException"> </exception>
protected internal virtual object Invoke(Bindings bindings, ELContext context, object @base, MethodInfo method)
{
Type[] types = method.GetParameters().Select(c => c.ParameterType).ToArray();
object[] @params = null;
if (types.Length > 0)
{
@params = new object[types.Length];
//if (varargs && method.GetParameters().Any())
if (method.ContainsGenericParameters && method.GetParameters().Any())
{
for (int i = 0; i < @params.Length - 1; i++)
{
object param = GetParam(i).Eval(bindings, context);
if (param != null || types[i].IsPrimitive)
{
@params[i] = bindings.Convert <object>(param, types[i]);
}
}
int varargIndex = types.Length - 1;
Type varargType = types[varargIndex];
int length = ParamCount - varargIndex;
object array = null;
if (length == 1)
{ // special: eventually use argument as is
object param = GetParam(varargIndex).Eval(bindings, context);
if (param != null && param.GetType().IsArray)
{
if (types[varargIndex].IsInstanceOfType(param))
{
array = param;
}
else
{ // coerce array elements
//length = Array.GetLength(param);
//array = Array.CreateInstance(varargType, length);
//for (int i = 0; i < length; i++)
//{
// object elem = Array.Get(param, i);
// if (elem != null || varargType.IsPrimitive)
// {
// ((System.Array)array).SetValue(bindings.Convert(elem, varargType), i);
// }
//}
}
}
else
{ // single element array
array = Array.CreateInstance(varargType, 1);
if (param != null || varargType.IsPrimitive)
{
((System.Array)array).SetValue(bindings.Convert <object>(param, varargType), 0);
}
}
}
else
{
array = Array.CreateInstance(varargType, length);
for (int i = 0; i < length; i++)
{
object param = GetParam(varargIndex + i).Eval(bindings, context);
if (param != null || varargType.IsPrimitive)
{
((System.Array)array).SetValue(bindings.Convert <object>(param, varargType), i);
}
}
}
@params[varargIndex] = array;
}
else
{
for (int i = 0; i < @params.Length; i++)
{
object param = GetParam(i).Eval(bindings, context);
if (param != null || types[i].IsPrimitive)
{
@params[i] = bindings.Convert <object>(param, types[i]);
}
}
}
}
return(method.Invoke(@base, @params));
}
public AstFunction(string name, int index, AstParameters @params) : this(name, index, @params, false)
{
}
public AstMethod(AstProperty property, AstParameters @params)
{
this.property = property;
this.@params = @params;
}