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109 lines
3.3 KiB
Python
109 lines
3.3 KiB
Python
# This script generates a Python interface for an Apple Macintosh Manager.
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# It uses the "bgen" package to generate C code.
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# The function specifications are generated by scanning the mamager's header file,
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# using the "scantools" package (customized for this particular manager).
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import string
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# Declarations that change for each manager
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MACHEADERFILE = 'Components.h' # The Apple header file
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MODNAME = 'Cm' # The name of the module
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# The following is *usually* unchanged but may still require tuning
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MODPREFIX = MODNAME # The prefix for module-wide routines
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C_OBJECTPREFIX = 'CmpObj' # The prefix for object methods
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CI_OBJECTPREFIX = 'CmpInstObj'
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INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner
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OUTPUTFILE = MODNAME + "module.c" # The file generated by this program
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from macsupport import *
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# Create the type objects
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includestuff = includestuff + """
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#include <%s>""" % MACHEADERFILE + """
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/*
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** Parse/generate ComponentDescriptor records
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*/
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PyObject *CmpDesc_New(itself)
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ComponentDescription *itself;
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{
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return Py_BuildValue("O&O&O&ll",
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PyMac_BuildOSType, itself->componentType,
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PyMac_BuildOSType, itself->componentSubType,
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PyMac_BuildOSType, itself->componentManufacturer,
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itself->componentFlags, itself->componentFlagsMask);
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}
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CmpDesc_Convert(v, p_itself)
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PyObject *v;
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ComponentDescription *p_itself;
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{
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return PyArg_ParseTuple(v, "O&O&O&ll",
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PyMac_GetOSType, &p_itself->componentType,
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PyMac_GetOSType, &p_itself->componentSubType,
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PyMac_GetOSType, &p_itself->componentManufacturer,
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&p_itself->componentFlags, &p_itself->componentFlagsMask);
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}
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"""
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ComponentDescription = OpaqueType('ComponentDescription', 'CmpDesc')
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Component = OpaqueByValueType('Component', C_OBJECTPREFIX)
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ComponentInstance = OpaqueByValueType('ComponentInstance', CI_OBJECTPREFIX)
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ComponentResult = Type("ComponentResult", "l")
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ComponentResourceHandle = OpaqueByValueType("ComponentResourceHandle", "ResObj")
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class MyCIObjectDefinition(GlobalObjectDefinition):
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def outputCheckNewArg(self):
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Output("""if (itself == NULL) {
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PyErr_SetString(Cm_Error,"NULL ComponentInstance");
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return NULL;
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}""")
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class MyCObjectDefinition(GlobalObjectDefinition):
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def outputCheckNewArg(self):
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Output("""if (itself == NULL) {
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/* XXXX Or should we return None? */
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PyErr_SetString(Cm_Error,"No such component");
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return NULL;
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}""")
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def outputCheckConvertArg(self):
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Output("""if ( v == Py_None ) {
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*p_itself = 0;
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return 1;
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}""")
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# Create the generator groups and link them
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module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
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ci_object = MyCIObjectDefinition('ComponentInstance', CI_OBJECTPREFIX,
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'ComponentInstance')
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c_object = MyCObjectDefinition('Component', C_OBJECTPREFIX, 'Component')
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module.addobject(ci_object)
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module.addobject(c_object)
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# Create the generator classes used to populate the lists
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Function = OSErrFunctionGenerator
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Method = OSErrMethodGenerator
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# Create and populate the lists
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functions = []
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c_methods = []
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ci_methods = []
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execfile(INPUTFILE)
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# add the populated lists to the generator groups
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# (in a different wordl the scan program would generate this)
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for f in functions: module.add(f)
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for f in c_methods: c_object.add(f)
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for f in ci_methods: ci_object.add(f)
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# generate output (open the output file as late as possible)
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SetOutputFileName(OUTPUTFILE)
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module.generate()
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