Mac/Modules/te/tesupport.py

   1 # This script generates a Python interface for an Apple Macintosh Manager.
   2 # It uses the "bgen" package to generate C code.
   3 # The function specifications are generated by scanning the mamager's header file,
   4 # using the "scantools" package (customized for this particular manager).
   5
   6 import string
   7
   8 # Declarations that change for each manager
   9 MACHEADERFILE = 'TextEdit.h'            # The Apple header file
  10 MODNAME = '_TE'                         # The name of the module
  11 OBJECTNAME = 'TE'                       # The basic name of the objects used here
  12 KIND = 'Handle'                         # Usually 'Ptr' or 'Handle'
  13
  14 # The following is *usually* unchanged but may still require tuning
  15 MODPREFIX = 'TE'                        # The prefix for module-wide routines
  16 OBJECTTYPE = "TEHandle"         # The C type used to represent them
  17 OBJECTPREFIX = MODPREFIX + 'Obj'        # The prefix for object methods
  18 INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner
  19 OUTPUTFILE = MODNAME + "module.c"       # The file generated by this program
  20
  21 from macsupport import *
  22
  23 # Create the type objects
  24 TEHandle = OpaqueByValueType("TEHandle", "TEObj")
  25 CharsHandle = OpaqueByValueType("CharsHandle", "ResObj")
  26 Handle = OpaqueByValueType("Handle", "ResObj")
  27 StScrpHandle = OpaqueByValueType("StScrpHandle", "ResObj")
  28 TEStyleHandle = OpaqueByValueType("TEStyleHandle", "ResObj")
  29 RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
  30
  31 TextStyle = OpaqueType("TextStyle", "TextStyle")
  32 TextStyle_ptr = TextStyle
  33
  34 includestuff = includestuff + """
  35 #ifdef WITHOUT_FRAMEWORKS
  36 #include <TextEdit.h>
  37 #else
  38 #include <Carbon/Carbon.h>
  39 #endif
  40
  41 #ifdef USE_TOOLBOX_OBJECT_GLUE
  42 extern PyObject *_TEObj_New(TEHandle);
  43 extern int _TEObj_Convert(PyObject *, TEHandle *);
  44
  45 #define TEObj_New _TEObj_New
  46 #define TEObj_Convert _TEObj_Convert
  47 #endif
  48
  49 #define as_TE(h) ((TEHandle)h)
  50 #define as_Resource(teh) ((Handle)teh)
  51
  52 /*
  53 ** Parse/generate TextStyle records
  54 */
  55 static PyObject *
  56 TextStyle_New(TextStylePtr itself)
  57 {
  58
  59         return Py_BuildValue("lllO&", (long)itself->tsFont, (long)itself->tsFace, (long)itself->tsSize, QdRGB_New,
  60                                 &itself->tsColor);
  61 }
  62
  63 static int
  64 TextStyle_Convert(PyObject *v, TextStylePtr p_itself)
  65 {
  66         long font, face, size;
  67
  68         if( !PyArg_ParseTuple(v, "lllO&", &font, &face, &size, QdRGB_Convert, &p_itself->tsColor) )
  69                 return 0;
  70         p_itself->tsFont = (short)font;
  71         p_itself->tsFace = (Style)face;
  72         p_itself->tsSize = (short)size;
  73         return 1;
  74 }
  75 """
  76
  77 initstuff = initstuff + """
  78         PyMac_INIT_TOOLBOX_OBJECT_NEW(TEHandle, TEObj_New);
  79         PyMac_INIT_TOOLBOX_OBJECT_CONVERT(TEHandle, TEObj_Convert);
  80 """
  81
  82 class TEMethodGenerator(OSErrWeakLinkMethodGenerator):
  83         """Similar to MethodGenerator, but has self as last argument"""
  84
  85         def parseArgumentList(self, args):
  86                 args, a0 = args[:-1], args[-1]
  87                 t0, n0, m0 = a0
  88                 if m0 != InMode:
  89                         raise ValueError, "method's 'self' must be 'InMode'"
  90                 self.itself = Variable(t0, "_self->ob_itself", SelfMode)
  91                 FunctionGenerator.parseArgumentList(self, args)
  92                 self.argumentList.append(self.itself)
  93
  94
  95
  96 class MyObjectDefinition(GlobalObjectDefinition):
  97         def outputCheckNewArg(self):
  98                 Output("""if (itself == NULL) {
  99                                         PyErr_SetString(TE_Error,"Cannot create null TE");
 100                                         return NULL;
 101                                 }""")
 102         def outputFreeIt(self, itselfname):
 103                 Output("TEDispose(%s);", itselfname)
 104
 105         def outputGetattrHook(self):
 106                 Output("""
 107                         if( strcmp(name, "destRect") == 0 )
 108                                 return Py_BuildValue("O&", PyMac_BuildRect,
 109                                                 &(*self->ob_itself)->destRect);
 110                         if( strcmp(name, "viewRect") == 0 )
 111                                 return Py_BuildValue("O&", PyMac_BuildRect,
 112                                                 &(*self->ob_itself)->viewRect);
 113                         if( strcmp(name, "selRect") == 0 )
 114                                 return Py_BuildValue("O&", PyMac_BuildRect,
 115                                                 &(*self->ob_itself)->selRect);
 116                         if( strcmp(name, "lineHeight") == 0 )
 117                                 return Py_BuildValue("h", (*self->ob_itself)->lineHeight);
 118                         if( strcmp(name, "fontAscent") == 0 )
 119                                 return Py_BuildValue("h", (*self->ob_itself)->fontAscent);
 120                         if( strcmp(name, "selPoint") == 0 )
 121                                 return Py_BuildValue("O&", PyMac_BuildPoint,
 122                                                 (*self->ob_itself)->selPoint);
 123                         if( strcmp(name, "selStart") == 0 )
 124                                 return Py_BuildValue("h", (*self->ob_itself)->selStart);
 125                         if( strcmp(name, "selEnd") == 0 )
 126                                 return Py_BuildValue("h", (*self->ob_itself)->selEnd);
 127                         if( strcmp(name, "active") == 0 )
 128                                 return Py_BuildValue("h", (*self->ob_itself)->active);
 129                         if( strcmp(name, "just") == 0 )
 130                                 return Py_BuildValue("h", (*self->ob_itself)->just);
 131                         if( strcmp(name, "teLength") == 0 )
 132                                 return Py_BuildValue("h", (*self->ob_itself)->teLength);
 133                         if( strcmp(name, "txFont") == 0 )
 134                                 return Py_BuildValue("h", (*self->ob_itself)->txFont);
 135                         if( strcmp(name, "txFace") == 0 )
 136                                 return Py_BuildValue("h", (*self->ob_itself)->txFace);
 137                         if( strcmp(name, "txMode") == 0 )
 138                                 return Py_BuildValue("h", (*self->ob_itself)->txMode);
 139                         if( strcmp(name, "txSize") == 0 )
 140                                 return Py_BuildValue("h", (*self->ob_itself)->txSize);
 141                         if( strcmp(name, "nLines") == 0 )
 142                                 return Py_BuildValue("h", (*self->ob_itself)->nLines);
 143                 """)
 144
 145 # From here on it's basically all boiler plate...
 146
 147 # Create the generator groups and link them
 148 module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
 149 object = MyObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)
 150 module.addobject(object)
 151
 152 # Create the generator classes used to populate the lists
 153 Function = OSErrWeakLinkFunctionGenerator
 154 Method = TEMethodGenerator
 155
 156 # Create and populate the lists
 157 functions = []
 158 methods = []
 159 execfile(INPUTFILE)
 160
 161 # Converter from/to handle
 162 f = Function(TEHandle, 'as_TE', (Handle, 'h', InMode))
 163 functions.append(f)
 164 f = Method(Handle, 'as_Resource', (TEHandle, 'teh', InMode))
 165 methods.append(f)
 166
 167 # add the populated lists to the generator groups
 168 # (in a different wordl the scan program would generate this)
 169 for f in functions: module.add(f)
 170 for f in methods: object.add(f)
 171
 172 # generate output (open the output file as late as possible)
 173 SetOutputFileName(OUTPUTFILE)
 174 module.generate()
 175