private object getAsDecimal(LuaCore.lua_State luaState, int stackPos)
{
decimal retVal = (decimal)LuaLib.lua_tonumber(luaState, stackPos);
if (retVal == 0 && !LuaLib.lua_isnumber(luaState, stackPos))
{
return(null);
}
return(retVal);
}
private object getAsFloat(LuaCore.lua_State luaState, int stackPos)
{
float retVal = (float)LuaLib.lua_tonumber(luaState, stackPos);
if (retVal == 0 && !LuaLib.lua_isnumber(luaState, stackPos))
{
return(null);
}
return(retVal);
}
private object getAsChar(LuaCore.lua_State luaState, int stackPos)
{
char retVal = (char)LuaLib.lua_tonumber(luaState, stackPos);
if (retVal == 0 && !LuaLib.lua_isnumber(luaState, stackPos))
{
return(null);
}
return(retVal);
}
private object getAsDouble(LuaCore.lua_State luaState, int stackPos)
{
double retVal = LuaLib.lua_tonumber(luaState, stackPos);
if (retVal == 0 && !LuaLib.lua_isnumber(luaState, stackPos))
{
return(null);
}
return(retVal);
}
private object getAsUlong(LuaCore.lua_State luaState, int stackPos)
{
ulong retVal = (ulong)LuaLib.lua_tonumber(luaState, stackPos);
if (retVal == 0 && !LuaLib.lua_isnumber(luaState, stackPos))
{
return(null);
}
return(retVal);
}
private object getAsByte(LuaCore.lua_State luaState, int stackPos)
{
byte retVal = (byte)LuaLib.lua_tonumber(luaState, stackPos);
if (retVal == 0 && !LuaLib.lua_isnumber(luaState, stackPos))
{
return(null);
}
return(retVal);
}
/*
* __index metafunction of type references, works on static members.
*/
private int getClassMethod(LuaCore.lua_State luaState)
{
IReflect klass;
object obj = translator.getRawNetObject(luaState, 1);
if (obj.IsNull() || !(obj is IReflect))
{
translator.throwError(luaState, "trying to index an invalid type reference");
LuaLib.lua_pushnil(luaState);
return(1);
}
else
{
klass = (IReflect)obj;
}
if (LuaLib.lua_isnumber(luaState, 2))
{
int size = (int)LuaLib.lua_tonumber(luaState, 2);
translator.push(luaState, Array.CreateInstance(klass.UnderlyingSystemType, size));
return(1);
}
else
{
string methodName = LuaLib.lua_tostring(luaState, 2).ToString();
if (methodName.IsNull())
{
LuaLib.lua_pushnil(luaState);
return(1);
} //CP: Ignore case
else
{
return(getMember(luaState, klass, null, methodName, BindingFlags.FlattenHierarchy | BindingFlags.Static | BindingFlags.IgnoreCase));
}
}
}
/*
* __newindex metafunction of CLR objects. Receives the object,
* the member name and the value to be stored as arguments. Throws
* and error if the assignment is invalid.
*/
private int setFieldOrProperty(LuaCore.lua_State luaState)
{
object target = translator.getRawNetObject(luaState, 1);
if (target.IsNull())
{
translator.throwError(luaState, "trying to index and invalid object reference");
return(0);
}
var type = target.GetType();
// First try to look up the parameter as a property name
string detailMessage;
bool didMember = trySetMember(luaState, type, target, BindingFlags.Instance | BindingFlags.IgnoreCase, out detailMessage);
if (didMember)
{
return(0); // Must have found the property name
}
// We didn't find a property name, now see if we can use a [] style this accessor to set array contents
try
{
if (type.IsArray && LuaLib.lua_isnumber(luaState, 2))
{
int index = (int)LuaLib.lua_tonumber(luaState, 2);
var arr = (Array)target;
object val = translator.getAsType(luaState, 3, arr.GetType().GetElementType());
arr.SetValue(val, index);
}
else
{
// Try to see if we have a this[] accessor
var setter = type.GetMethod("set_Item");
if (!setter.IsNull())
{
var args = setter.GetParameters();
var valueType = args[1].ParameterType;
// The new val ue the user specified
object val = translator.getAsType(luaState, 3, valueType);
var indexType = args[0].ParameterType;
object index = translator.getAsType(luaState, 2, indexType);
object[] methodArgs = new object[2];
// Just call the indexer - if out of bounds an exception will happen
methodArgs[0] = index;
methodArgs[1] = val;
setter.Invoke(target, methodArgs);
}
else
{
translator.throwError(luaState, detailMessage); // Pass the original message from trySetMember because it is probably best
}
}
}
catch (SEHException)
{
// If we are seeing a C++ exception - this must actually be for Lua's private use. Let it handle it
throw;
}
catch (Exception e)
{
ThrowError(luaState, e);
}
return(0);
}
internal ExtractValue checkType(LuaCore.lua_State luaState, int stackPos, Type paramType)
{
var luatype = LuaLib.lua_type(luaState, stackPos);
if (paramType.IsByRef)
{
paramType = paramType.GetElementType();
}
var underlyingType = Nullable.GetUnderlyingType(paramType);
if (!underlyingType.IsNull())
{
paramType = underlyingType; // Silently convert nullable types to their non null requics
}
long runtimeHandleValue = paramType.TypeHandle.Value.ToInt64();
if (paramType.Equals(typeof(object)))
{
return(extractValues[runtimeHandleValue]);
}
//CP: Added support for generic parameters
if (paramType.IsGenericParameter)
{
if (luatype == LuaTypes.Boolean)
{
return(extractValues[typeof(bool).TypeHandle.Value.ToInt64()]);
}
else if (luatype == LuaTypes.String)
{
return(extractValues[typeof(string).TypeHandle.Value.ToInt64()]);
}
else if (luatype == LuaTypes.Table)
{
return(extractValues[typeof(LuaTable).TypeHandle.Value.ToInt64()]);
}
else if (luatype == LuaTypes.UserData)
{
return(extractValues[typeof(object).TypeHandle.Value.ToInt64()]);
}
else if (luatype == LuaTypes.Function)
{
return(extractValues[typeof(LuaFunction).TypeHandle.Value.ToInt64()]);
}
else if (luatype == LuaTypes.Number)
{
return(extractValues[typeof(double).TypeHandle.Value.ToInt64()]);
}
//else
//;//an unsupported type was encountered
}
if (LuaLib.lua_isnumber(luaState, stackPos))
{
return(extractValues[runtimeHandleValue]);
}
if (paramType == typeof(bool))
{
if (LuaLib.lua_isboolean(luaState, stackPos))
{
return(extractValues[runtimeHandleValue]);
}
}
else if (paramType == typeof(string))
{
if (LuaLib.lua_isstring(luaState, stackPos))
{
return(extractValues[runtimeHandleValue]);
}
else if (luatype == LuaTypes.Nil)
{
return(extractNetObject); // kevinh - silently convert nil to a null string pointer
}
}
else if (paramType == typeof(LuaTable))
{
if (luatype == LuaTypes.Table)
{
return(extractValues[runtimeHandleValue]);
}
}
else if (paramType == typeof(LuaUserData))
{
if (luatype == LuaTypes.UserData)
{
return(extractValues[runtimeHandleValue]);
}
}
else if (paramType == typeof(LuaFunction))
{
if (luatype == LuaTypes.Function)
{
return(extractValues[runtimeHandleValue]);
}
}
else if (typeof(Delegate).IsAssignableFrom(paramType) && luatype == LuaTypes.Function)
{
return(new ExtractValue(new DelegateGenerator(translator, paramType).extractGenerated));
}
else if (paramType.IsInterface && luatype == LuaTypes.Table)
{
return(new ExtractValue(new ClassGenerator(translator, paramType).extractGenerated));
}
else if ((paramType.IsInterface || paramType.IsClass) && luatype == LuaTypes.Nil)
{
// kevinh - allow nil to be silently converted to null - extractNetObject will return null when the item ain't found
return(extractNetObject);
}
else if (LuaLib.lua_type(luaState, stackPos) == LuaTypes.Table)
{
if (LuaLib.luaL_getmetafield(luaState, stackPos, "__index"))
{
object obj = translator.getNetObject(luaState, -1);
LuaLib.lua_settop(luaState, -2);
if (!obj.IsNull() && paramType.IsAssignableFrom(obj.GetType()))
{
return(extractNetObject);
}
}
else
{
return(null);
}
}
else
{
object obj = translator.getNetObject(luaState, stackPos);
if (!obj.IsNull() && paramType.IsAssignableFrom(obj.GetType()))
{
return(extractNetObject);
}
}
return(null);
}
