# This script generates a Python interface for an Apple Macintosh Manager.

# It uses the "bgen" package to generate C code.

# The function specifications are generated by scanning the mamager's header file,

# using the "scantools" package (customized for this particular manager).

import string

# Declarations that change for each manager

MACHEADERFILE = 'Menus.h'               # The Apple header file

MODNAME = '_Menu'                       # The name of the module

OBJECTNAME = 'Menu'                     # The basic name of the objects used here

# The following is *usually* unchanged but may still require tuning

MODPREFIX = 'Menu'                      # The prefix for module-wide routines

OBJECTTYPE = OBJECTNAME + 'Handle'      # The C type used to represent them

OBJECTPREFIX = MODPREFIX + 'Obj'        # The prefix for object methods

INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner

EXTRAFILE = string.lower(MODPREFIX) + 'edit.py' # A similar file but hand-made

OUTPUTFILE = MODNAME + "module.c"       # The file generated by this program

from macsupport import *

# Create the type objects

MenuHandle = OpaqueByValueType(OBJECTTYPE, OBJECTPREFIX)

MenuRef = MenuHandle

OptMenuRef = OpaqueByValueType(OBJECTTYPE, "Opt" + OBJECTPREFIX)

Handle = OpaqueByValueType("Handle", "ResObj")

MenuBarHandle = OpaqueByValueType("MenuBarHandle", "ResObj")

MenuID = Type("MenuID", "h")

MenuItemIndex = Type("MenuItemIndex", "h")

MenuItemID = Type("MenuItemID", "l")

MenuCommand = Type("MenuCommand", "l")

MenuAttributes = Type("MenuAttributes", "l")

MenuItemAttributes = Type("MenuItemAttributes", "l")

unsigned_char = Type('unsigned char', 'b')

FMFontFamily = Type("FMFontFamily", "h")

FMFontStyle = Type("FMFontStyle", "h")

UniChar = Type("UniChar", "h")

includestuff = includestuff + """

#include <Carbon/Carbon.h>

#ifdef USE_TOOLBOX_OBJECT_GLUE

extern PyObject *_MenuObj_New(MenuHandle);

extern int _MenuObj_Convert(PyObject *, MenuHandle *);

#define MenuObj_New _MenuObj_New

#define MenuObj_Convert _MenuObj_Convert

#endif

#define as_Menu(h) ((MenuHandle)h)

#define as_Resource(h) ((Handle)h)

/* Alternative version of MenuObj_New, which returns None for NULL argument */

PyObject *OptMenuObj_New(MenuRef itself)

{

        if (itself == NULL) {

                Py_INCREF(Py_None);

                return Py_None;

        }

        return MenuObj_New(itself);

}

/* Alternative version of MenuObj_Convert, which returns NULL for a None argument */

int OptMenuObj_Convert(PyObject *v, MenuRef *p_itself)

{

        if ( v == Py_None ) {

                *p_itself = NULL;

                return 1;

        }

        return MenuObj_Convert(v, p_itself);

}

"""

initstuff = initstuff + """

        PyMac_INIT_TOOLBOX_OBJECT_NEW(MenuHandle, MenuObj_New);

        PyMac_INIT_TOOLBOX_OBJECT_CONVERT(MenuHandle, MenuObj_Convert);

"""

class MyObjectDefinition(PEP253Mixin, GlobalObjectDefinition):

    pass

# Create the generator groups and link them

module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)

object = MyObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)

module.addobject(object)

# Create the generator classes used to populate the lists

Function = OSErrWeakLinkFunctionGenerator

Method = OSErrWeakLinkMethodGenerator

# Create and populate the lists

functions = []

methods = []

execfile(INPUTFILE)

execfile(EXTRAFILE)

# add the populated lists to the generator groups

for f in functions: module.add(f)

for f in methods: object.add(f)

# generate output (open the output file as late as possible)

SetOutputFileName(OUTPUTFILE)

module.generate()