On Wed, Dec 19, 2012 at 10:27 AM, Eliot Miranda <eliot.miranda@gmail.com> wrote:

Hi Igor,

On Wed, Dec 19, 2012 at 4:59 AM, Igor Stasenko <siguctua@gmail.com> wrote:

Hello,

i am lost (again) what , where, and how things should be initialized,
and in what order
in order to generate code for Cog.

After Esteban merged VMMaker with latest , i ran into issue with
'isPushNilFunction' == nil.

The problem is that it is class instance variable..

Since i made own subclass of

StackToRegisterMappingCogit

and doing

'myclass initializeWithOptions: ... '

it initializes isPushNilFunction variable properly there.

Now at early stages of code generation a run into error, because
CCodeGenerator walks over superclasses and doing #addClass:
for each..

it breaks in
StackToRegisterMappingCogit class>>declareCVarsIn: aCodeGen

                >>      declareC: 'sqInt (*isPushNilFunction)(struct _BytecodeDescriptor
*,sqInt,sqInt,sqInt) = ', (aCodeGen cFunctionNameFor:
isPushNilFunction);

because, of course isPushNilFunction variable has separate value for
this class than in my subclass.

OK, I'll make an accessor. 

Ah, the accessors already exist.  All that needs to happen is to send the accessors instead of access the inst vars in StackToRegisterMappingCogit class>>declareCVarsIn: aCodeGen