private ReflectedMethodInfo CreateMethodInfo(ScriptEngine.Machine.MethodInfo methInfo)
{
var reflectedMethod = new ReflectedMethodInfo(methInfo.Name);
reflectedMethod.IsFunction = methInfo.IsFunction;
for (int i = 0; i < methInfo.Params.Length; i++)
{
var currentParam = methInfo.Params[i];
var reflectedParam = new ReflectedParamInfo("param" + i.ToString(), currentParam.IsByValue);
reflectedParam.SetOwner(reflectedMethod);
reflectedParam.SetPosition(i);
reflectedMethod.Parameters.Add(reflectedParam);
}
return(reflectedMethod);
}
private static MethodInfo CreateMetadata(System.Reflection.MethodInfo target, ContextMethodAttribute binding)
{
var parameters = target.GetParameters();
var isFunc = target.ReturnType != typeof(void);
var argNum = parameters.Length;
var paramDefs = new ParameterDefinition[argNum];
for (int i = 0; i < argNum; i++)
{
var pd = new ParameterDefinition();
if (parameters[i].GetCustomAttributes(typeof(ByRefAttribute), false).Length != 0)
{
if (parameters[i].ParameterType != typeof(IVariable))
{
throw new InvalidOperationException("Attribute ByRef can be applied only on IVariable parameters");
}
pd.IsByValue = false;
}
else
{
pd.IsByValue = true;
}
if (parameters[i].IsOptional)
{
pd.HasDefaultValue = true;
pd.DefaultValueIndex = ParameterDefinition.UNDEFINED_VALUE_INDEX;
}
paramDefs[i] = pd;
}
var scriptMethInfo = new ScriptEngine.Machine.MethodInfo();
scriptMethInfo.IsFunction = isFunc;
scriptMethInfo.IsExport = true;
scriptMethInfo.IsDeprecated = binding.IsDeprecated;
scriptMethInfo.ThrowOnUseDeprecated = binding.ThrowOnUse;
scriptMethInfo.Name = binding.GetName();
scriptMethInfo.Alias = binding.GetAlias(target.Name);
scriptMethInfo.Params = paramDefs;
return(scriptMethInfo);
}
private void MapType(Type type)
{
var methods = type.GetMethods()
.Where(x => x.GetCustomAttributes(typeof(ContextMethodAttribute), false).Any())
.Select(x => new {
Method = x,
Binding = (ContextMethodAttribute)x.GetCustomAttributes(typeof(ContextMethodAttribute), false)[0]
});
foreach (var item in methods)
{
const int MAX_ARG_SUPPORTED = 8;
var parameters = item.Method.GetParameters();
var paramTypes = parameters.Select(x => x.ParameterType).ToList();
var isFunc = item.Method.ReturnType != typeof(void);
if (isFunc)
{
paramTypes.Add(item.Method.ReturnType);
}
var argNum = paramTypes.Count;
if (argNum <= MAX_ARG_SUPPORTED)
{
var action = ResolveGeneric(argNum, paramTypes.ToArray(), isFunc);
var methPtr = (ContextCallableDelegate <TInstance>)action.Invoke(this, new object[] { item.Method });
if (isFunc)
{
argNum--;
}
var paramDefs = new ParameterDefinition[argNum];
for (int i = 0; i < argNum; i++)
{
var pd = new ParameterDefinition();
if (parameters[i].GetCustomAttributes(typeof(ByRefAttribute), false).Length != 0)
{
if (paramTypes[i] != typeof(IVariable))
{
throw new InvalidOperationException("Attribute ByRef can be applied only on IVariable parameters");
}
pd.IsByValue = false;
}
else
{
pd.IsByValue = true;
}
if (parameters[i].IsOptional)
{
pd.HasDefaultValue = true;
pd.DefaultValueIndex = ParameterDefinition.UNDEFINED_VALUE_INDEX;
}
paramDefs[i] = pd;
}
var scriptMethInfo = new ScriptEngine.Machine.MethodInfo();
scriptMethInfo.IsFunction = isFunc;
scriptMethInfo.Name = item.Binding.GetName().ToLower();
scriptMethInfo.Alias = item.Binding.GetAlias().ToLower();
scriptMethInfo.Params = paramDefs;
_methodPtrs.Add(new InternalMethInfo()
{
method = methPtr,
methodInfo = scriptMethInfo
});
}
else
{
throw new NotSupportedException(string.Format("Only {0} parameters supported", MAX_ARG_SUPPORTED));
}
}
}
