# 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 = 'Components.h'          # The Apple header file

MODNAME = '_Cm'                         # The name of the module

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

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

C_OBJECTPREFIX = 'CmpObj'       # The prefix for object methods

CI_OBJECTPREFIX = 'CmpInstObj'

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

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

from macsupport import *

# Create the type objects

includestuff = includestuff + """

#include <Carbon/Carbon.h>

#ifdef USE_TOOLBOX_OBJECT_GLUE

extern PyObject *_CmpObj_New(Component);

extern int _CmpObj_Convert(PyObject *, Component *);

extern PyObject *_CmpInstObj_New(ComponentInstance);

extern int _CmpInstObj_Convert(PyObject *, ComponentInstance *);

#define CmpObj_New _CmpObj_New

#define CmpObj_Convert _CmpObj_Convert

#define CmpInstObj_New _CmpInstObj_New

#define CmpInstObj_Convert _CmpInstObj_Convert

#endif

/*

** Parse/generate ComponentDescriptor records

*/

static PyObject *

CmpDesc_New(ComponentDescription *itself)

{

        return Py_BuildValue("O&O&O&ll",

                PyMac_BuildOSType, itself->componentType,

                PyMac_BuildOSType, itself->componentSubType,

                PyMac_BuildOSType, itself->componentManufacturer,

                itself->componentFlags, itself->componentFlagsMask);

}

static int

CmpDesc_Convert(PyObject *v, ComponentDescription *p_itself)

{

        return PyArg_ParseTuple(v, "O&O&O&ll",

                PyMac_GetOSType, &p_itself->componentType,

                PyMac_GetOSType, &p_itself->componentSubType,

                PyMac_GetOSType, &p_itself->componentManufacturer,

                &p_itself->componentFlags, &p_itself->componentFlagsMask);

}

"""

initstuff = initstuff + """

        PyMac_INIT_TOOLBOX_OBJECT_NEW(Component, CmpObj_New);

        PyMac_INIT_TOOLBOX_OBJECT_CONVERT(Component, CmpObj_Convert);

        PyMac_INIT_TOOLBOX_OBJECT_NEW(ComponentInstance, CmpInstObj_New);

        PyMac_INIT_TOOLBOX_OBJECT_CONVERT(ComponentInstance, CmpInstObj_Convert);

"""

ComponentDescription = OpaqueType('ComponentDescription', 'CmpDesc')

Component = OpaqueByValueType('Component', C_OBJECTPREFIX)

ComponentInstance = OpaqueByValueType('ComponentInstance', CI_OBJECTPREFIX)

ComponentResult = Type("ComponentResult", "l")

ComponentResourceHandle = OpaqueByValueType("ComponentResourceHandle", "ResObj")

class MyCIObjectDefinition(PEP253Mixin, GlobalObjectDefinition):

    def outputCheckNewArg(self):

        Output("""if (itself == NULL) {

                                PyErr_SetString(Cm_Error,"NULL ComponentInstance");

                                return NULL;

                        }""")

class MyCObjectDefinition(PEP253Mixin, GlobalObjectDefinition):

    def outputCheckNewArg(self):

        Output("""if (itself == NULL) {

                                /* XXXX Or should we return None? */

                                PyErr_SetString(Cm_Error,"No such component");

                                return NULL;

                        }""")

    def outputCheckConvertArg(self):

        Output("""if ( v == Py_None ) {

                                *p_itself = 0;

                                return 1;

        }""")

# Create the generator groups and link them

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

ci_object = MyCIObjectDefinition('ComponentInstance', CI_OBJECTPREFIX,

                'ComponentInstance')

c_object = MyCObjectDefinition('Component', C_OBJECTPREFIX, 'Component')

module.addobject(ci_object)

module.addobject(c_object)

# Create the generator classes used to populate the lists

Function = OSErrWeakLinkFunctionGenerator

Method = OSErrWeakLinkMethodGenerator

# Create and populate the lists

functions = []

c_methods = []

ci_methods = []

execfile(INPUTFILE)

# add the populated lists to the generator groups

# (in a different wordl the scan program would generate this)

for f in functions: module.add(f)

for f in c_methods: c_object.add(f)

for f in ci_methods: ci_object.add(f)

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

SetOutputFileName(OUTPUTFILE)

module.generate()