Mammoth update to the Python code generator scripts that live in

src/mesa/glapi.  Basically, the scripts that did simple things (like
gl_offsets.py) were simple, and the scripts that did more complicated things
(like glX_proto_send.py) were getting progressively more and more out of
control.  So, I re-write the foundation classes on which everything is based.

One problem with the existing code is that the division between the GL API
database representation and the way the output code is generated was either
blury or nonexistant.  The new code somewhat follows the
Model-View-Controller pattern, minus the Controller.  There is a distinct
set of classes that model the API data, and there is a distinct set of
classes that generate code from that data.

One big change is in the class that represents GL functions (was glFunction,
is now gl_function).  There used to be an instance of this calls for each
function and for each alias to that function.  For example, there was an
instance for PointParameterivSGIS, PointParameterivEXT, PointParameterivARB,
and PointParameteriv.  In the new code, there is one instance.  Each
instance has a list of entrypoint names for the function. In the next
revision, this will allow a couple useful things.  The script will be able
to verify that the parameters, return type, and GLX protocol for a function
and all it's aliases match.

It will also allow aliases to be represented in the XML more compactly.
Instead of repeating all the information, an alias can be listed as:

     <function name="PointParameterivARB" alias="PointParameterivEXT"/>

Because the data representation was changed, the order that the alias
functions are processed by the scripts also changed.  This accounts for at
least 2,700 of the ~3,600 lines of diffs in the generated code.

Most of the remaining ~900 lines of diffs are the result of bugs *fixed* by
the new scripts.  The old scripts also generated code with some bugs in it.
These bugs were discovered while the new code was being written.

These changes were discussed on the mesa3d-dev mailing list back at the end
of May:

http://marc.theaimsgroup.com/?t=111714569000004&r=1&w=2

Xorg bug: 3197, 3208

1 files changed, 35 insertions, 26 deletions

diff --git a/src/mesa/glapi/gl_procs.py b/src/mesa/glapi/gl_procs.py
index 75bb844a335..1ad683de5c7 100644
--- a/src/mesa/glapi/gl_procs.py
+++ b/src/mesa/glapi/gl_procs.py
@@ -1,6 +1,6 @@
-#!/usr/bin/python2
+#!/usr/bin/env python
 
-# (C) Copyright IBM Corporation 2004
+# (C) Copyright IBM Corporation 2004, 2005
 # All Rights Reserved.
 #
 # Permission is hereby granted, free of charge, to any person obtaining a
@@ -29,12 +29,12 @@ import license
 import gl_XML
 import sys, getopt
 
-class PrintGlProcs(gl_XML.FilterGLAPISpecBase):
-	name = "gl_procs.py (from Mesa)"
-
+class PrintGlProcs(gl_XML.gl_print_base):
 	def __init__(self, long_strings):
+		gl_XML.gl_print_base.__init__(self)
+
 		self.long_strings = long_strings
-		gl_XML.FilterGLAPISpecBase.__init__(self)
+		self.name = "gl_procs.py (from Mesa)"
 		self.license = license.bsd_license_template % ( \
 """Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
 (C) Copyright IBM Corporation 2004""", "BRIAN PAUL, IBM")
@@ -66,29 +66,43 @@ class PrintGlProcs(gl_XML.FilterGLAPISpecBase):
 		print '#undef NAME_FUNC_OFFSET'
 		return
 
-	def printFunctionString(self, f):
+	def printFunctionString(self, name):
 		if self.long_strings:
-			print '    "gl%s\\0"' % (f.name)
+			print '    "gl%s\\0"' % (name)
 		else:
 			print "    'g','l',",
-			for c in f.name:
+			for c in name:
 				print "'%s'," % (c),
 			
 			print "'\\0',"
 
-	def printFunctionOffset(self, f, offset_of_name):
-		print '    NAME_FUNC_OFFSET( % 5u, gl%s, _gloffset_%s ),' % (offset_of_name, f.name, f.real_name)
-
 
-	def printFunctions(self):
+	def printBody(self, api):
 		print ''
 		if self.long_strings:
 			print 'static const char gl_string_table[] ='
 		else:
 			print 'static const char gl_string_table[] = {'
 
-		for f in self.functionIterator():
-			self.printFunctionString(f)
+		base_offset = 0
+		table = []
+		for func in api.functionIterateByOffset():
+			self.printFunctionString( func.name )
+			table.append((base_offset, func.name, func.name))
+
+			# The length of the function's name, plus 2 for "gl",
+			# plus 1 for the NUL.
+
+			base_offset += len(func.name) + 3
+
+
+		for func in api.functionIterateByOffset():
+			for n in func.entry_points:
+				if n != func.name:
+					self.printFunctionString( n )
+					table.append((base_offset, n, func.name))
+					base_offset += len(n) + 3
+
 
 		if self.long_strings:
 			print '    ;'
@@ -98,15 +112,8 @@ class PrintGlProcs(gl_XML.FilterGLAPISpecBase):
 		print ''
 		print 'static const glprocs_table_t static_functions[] = {'
 
-		base_offset = 0
-
-		for f in self.functionIterator():
-			self.printFunctionOffset(f, base_offset)
-
-			# The length of the function's name, plus 2 for "gl",
-			# plus 1 for the NUL.
-
-			base_offset += len(f.name) + 3
+		for (offset, disp_name, real_name) in table:
+			print '    NAME_FUNC_OFFSET( % 5u, gl%s, _gloffset_%s ),' % (offset, disp_name, real_name)
 
 		print '    NAME_FUNC_OFFSET( -1, NULL, 0 )'
 		print '};'
@@ -142,5 +149,7 @@ if __name__ == '__main__':
 			else:
 				show_usage()
 
-	dh = PrintGlProcs( long_string )
-	gl_XML.parse_GL_API( dh, file_name )
+	api = gl_XML.parse_GL_API( file_name )
+
+	printer = PrintGlProcs( long_string )
+	printer.Print( api )