An interface to WASTE, an all-singing-all-dancing TextEdit replacement

Mac/Modules/waste/wastescan.py

+# Scan an Apple header file, generating a Python file of generator calls.
+
+import addpack
+addpack.addpack(':tools:bgen:bgen')
+from scantools import Scanner
+from bgenlocations import TOOLBOXDIR
+
+WASTEDIR=":::::Waste 1.2a5:"
+
+OBJECT = "TEHandle"
+SHORT = "waste"
+OBJECT = "WEReference"
+OBJECT2 = "WEObjectReference"
+
+def main():
+	input = WASTEDIR + "WASTE C/C++ Headers:WASTE.h"
+	output = SHORT + "gen.py"
+	defsoutput = TOOLBOXDIR + "WASTEconst.py"
+	scanner = MyScanner(input, output, defsoutput)
+	scanner.scan()
+	scanner.gentypetest(SHORT+"typetest.py")
+	scanner.close()
+	print "=== Done scanning and generating, now importing the generated code... ==="
+	exec "import " + SHORT + "support"
+	print "=== Done.  It's up to you to compile it now! ==="
+
+class MyScanner(Scanner):
+
+	def initpatterns(self):
+		# Waste doesn't use 'extern':
+		Scanner.initpatterns(self)
+		self.head_pat = "^pascal[ \t]+"
+
+	def destination(self, type, name, arglist):
+		classname = "Function"
+		listname = "functions"
+		if arglist:
+			t, n, m = arglist[-1]
+			# This is non-functional today
+			if t == OBJECT and m == "InMode":
+				classname = "Method"
+				listname = "methods"
+			else:
+				t, n, m = arglist[0]
+				if t == OBJECT2 and m == "InMode":
+					classname = "Method2"
+					listname = "methods2"
+		return classname, listname
+
+	def makeblacklistnames(self):
+		return [
+			"WEDispose",
+			"WESetInfo", # Argument type unknown...
+			"WEGetInfo",
+			"WEGetObjectOwner", # Returns ref to existing WE
+			]
+
+	def makeblacklisttypes(self):
+		return [
+			"DragReference",	# For now...
+			"UniversalProcPtr",
+			]
+
+	def makerepairinstructions(self):
+		return [
+			([("void_ptr", "*", "InMode"), ("long", "*", "InMode")],
+			 [("InBuffer", "*", "*")]),
+
+			# WEContinuousStyle
+			([("WEStyleMode", "mode", "OutMode"), ("TextStyle", "aStyle", "OutMode")],
+			 [("WEStyleMode", "mode", "InOutMode"), ("TextStyle", "aStyle", "InOutMode")])
+			]
+			
+if __name__ == "__main__":
+	main()

Mac/Modules/waste/wastesupport.py

+# 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 = 'WASTE.h'		# The Apple header file
+MODNAME = 'waste'				# The name of the module
+OBJECTNAME = 'waste'			# The basic name of the objects used here
+KIND = 'Ptr'				# Usually 'Ptr' or 'Handle'
+
+# The following is *usually* unchanged but may still require tuning
+MODPREFIX = MODNAME			# The prefix for module-wide routines
+OBJECTTYPE = "WEReference"		# The C type used to represent them
+OBJECTPREFIX = MODPREFIX + 'Obj'	# The prefix for object methods
+INPUTFILE = 'wastegen.py' # The file generated by the scanner
+TYPETESTFILE = 'wastetypetest.py'	# Another file generated by the scanner
+OUTPUTFILE = "wastemodule.c"	# The file generated by this program
+
+from macsupport import *
+
+# Create the type objects
+WEReference = OpaqueByValueType("WEReference", "wasteObj")
+WEObjectReference = OpaqueByValueType("WEObjectReference", "WEOObj")
+##CharsHandle = OpaqueByValueType("CharsHandle", "ResObj")
+##Handle = OpaqueByValueType("Handle", "ResObj")
+StScrpHandle = OpaqueByValueType("StScrpHandle", "ResObj")
+##TEStyleHandle = OpaqueByValueType("TEStyleHandle", "ResObj")
+RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
+EventModifiers = Type("EventModifiers", "h")
+FlavorType = OSTypeType("FlavorType")
+WESelector = OSTypeType("WESelector")
+
+WEStyleMode = Type("WEStyleMode", "h")
+WEActionKind = Type("WEActionKind", "h")
+WEAlignment = Type("WEAlignment", "b")
+WESoupHandle = OpaqueByValueType("WESoupHandle", "ResObj")
+WERunInfo = OpaqueType("WERunInfo", "RunInfo")
+
+TextStyle = OpaqueType("TextStyle", "TextStyle")
+TextStyle_ptr = TextStyle
+LongPt = OpaqueType("LongPt", "LongPt")
+LongPt_ptr = LongPt
+LongRect = OpaqueType("LongRect", "LongRect")
+LongRect_ptr = LongRect
+
+includestuff = includestuff + """
+#include <%s>""" % MACHEADERFILE + """
+
+/* Exported by Qdmodule.c: */
+extern PyObject *QdRGB_New(RGBColor *);
+extern int QdRGB_Convert(PyObject *, RGBColor *);
+
+/* Forward declaration */
+staticforward PyObject *WEOObj_New(WEObjectReference);
+
+/*
+** Parse/generate TextStyle records
+*/
+static
+PyObject *TextStyle_New(itself)
+	TextStylePtr itself;
+{
+
+	return Py_BuildValue("lllO&", (long)itself->tsFont, (long)itself->tsFace, (long)itself->tsSize, QdRGB_New,
+				&itself->tsColor);
+}
+
+static
+TextStyle_Convert(v, p_itself)
+	PyObject *v;
+	TextStylePtr p_itself;
+{
+	long font, face, size;
+	
+	if( !PyArg_ParseTuple(v, "lllO&", &font, &face, &size, QdRGB_Convert, &p_itself->tsColor) )
+		return 0;
+	p_itself->tsFont = (short)font;
+	p_itself->tsFace = (Style)face;
+	p_itself->tsSize = (short)size;
+	return 1;
+}
+
+/*
+** Parse/generate RunInfo records
+*/
+static
+PyObject *RunInfo_New(itself)
+	WERunInfo *itself;
+{
+
+	return Py_BuildValue("llhhO&O&", itself->runStart, itself->runEnd, itself->runHeight,
+		itself->runAscent, TextStyle_New, &itself->runStyle, WEOObj_New, itself->runObject);
+}
+
+/* Conversion of long points and rects */
+int
+LongRect_Convert(PyObject *v, LongRect *r)
+{
+	return PyArg_Parse(v, "(llll)", &r->left, &r->top, &r->right, &r->bottom);
+}
+
+PyObject *
+LongRect_New(LongRect *r)
+{
+	return Py_BuildValue("(llll)", r->left, r->top, r->right, r->bottom);
+}
+
+
+LongPt_Convert(PyObject *v, LongPt *p)
+{
+	return PyArg_Parse(v, "(ll)", &p->h, &p->v);
+}
+
+PyObject *
+LongPt_New(LongPt *p)
+{
+	return Py_BuildValue("(ll)", p->h, p->v);
+}
+"""
+
+class WEMethodGenerator(OSErrMethodGenerator):
+	"""Similar to MethodGenerator, but has self as last argument"""
+
+	def parseArgumentList(self, args):
+		args, a0 = args[:-1], args[-1]
+		t0, n0, m0 = a0
+		if m0 != InMode:
+			raise ValueError, "method's 'self' must be 'InMode'"
+		self.itself = Variable(t0, "_self->ob_itself", SelfMode)
+		FunctionGenerator.parseArgumentList(self, args)
+		self.argumentList.append(self.itself)
+
+
+
+class WEObjectDefinition(GlobalObjectDefinition):
+	def outputCheckNewArg(self):
+		Output("""if (itself == NULL) {
+					PyErr_SetString(waste_Error,"Cannot create null WE");
+					return NULL;
+				}""")
+	def outputFreeIt(self, itselfname):
+		Output("WEDispose(%s);", itselfname)
+		
+class WEOObjectDefinition(GlobalObjectDefinition):
+	def outputCheckNewArg(self):
+		Output("""if (itself == NULL) {
+					Py_INCREF(Py_None);
+					return Py_None;
+				}""")		
+
+# From here on it's basically all boiler plate...
+
+# Test types used for existence
+execfile(TYPETESTFILE)
+
+# Create the generator groups and link them
+module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
+object = WEObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)
+object2 = WEOObjectDefinition("WEO", "WEOObj", "WEObjectReference")
+module.addobject(object2)
+module.addobject(object)
+
+# Create the generator classes used to populate the lists
+Function = OSErrFunctionGenerator
+Method = WEMethodGenerator
+Method2 = OSErrMethodGenerator
+
+# Create and populate the lists
+functions = []
+methods = []
+methods2 = []
+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 methods: object.add(f)
+for f in methods2: object2.add(f)
+
+# generate output (open the output file as late as possible)
+SetOutputFileName(OUTPUTFILE)
+module.generate()
+