private static IntPtr DoCreateCif(MethodInfo info)
{
IntPtr resultType = Ffi.GetFfiType(info.ReturnType);
ParameterInfo[] parms = info.GetParameters();
int numArgs = parms.Length;
PtrArray argTypes = new PtrArray(numArgs + 3);
argTypes[0] = Ffi.GetFfiType(typeof(NSObject));
argTypes[1] = Ffi.GetFfiType(typeof(Selector));
for (int i = 0; i < numArgs; ++i)
{
Type type = parms[i].ParameterType;
argTypes[i + 2] = Ffi.GetFfiType(type);
}
argTypes[numArgs + 2] = IntPtr.Zero;
return(Ffi.AllocCif(resultType, argTypes)); // note that we don't want to free argTypes
}
public StackFrame(MethodSignature sig)
{
m_returnEncoding = sig.GetReturnEncoding();
IntPtr resultType = Ffi.GetFfiType(m_returnEncoding);
m_resultBuffer = Ffi.CreateBuffer(m_returnEncoding);
int numArgs = sig.GetNumArgs();
m_argBuffers = new PtrArray(numArgs);
m_argTypes = new PtrArray(numArgs + 1);
for (int i = 0; i < numArgs; ++i)
{
string encoding = sig.GetArgEncoding(i);
m_argBuffers[i] = Ffi.CreateBuffer(encoding);
m_argTypes[i] = Ffi.GetFfiType(encoding);
}
m_argTypes[numArgs] = IntPtr.Zero;
m_cif = Ffi.AllocCif(resultType, m_argTypes);
}