src/mesa/glapi/gloffsets.py

   1 #!/usr/bin/env python
   2
   3 # $Id: gloffsets.py,v 1.4 2000/05/11 17:45:20 brianp Exp $
   4
   5 # Mesa 3-D graphics library
   6 # Version:  3.3
   7 #
   8 # Copyright (C) 1999-2000  Brian Paul   All Rights Reserved.
   9 #
  10 # Permission is hereby granted, free of charge, to any person obtaining a
  11 # copy of this software and associated documentation files (the "Software"),
  12 # to deal in the Software without restriction, including without limitation
  13 # the rights to use, copy, modify, merge, publish, distribute, sublicense,
  14 # and/or sell copies of the Software, and to permit persons to whom the
  15 # Software is furnished to do so, subject to the following conditions:
  16 #
  17 # The above copyright notice and this permission notice shall be included
  18 # in all copies or substantial portions of the Software.
  19 #
  20 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  21 # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  23 # BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  24 # AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  25 # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26
  27
  28 # Generate the glapioffsets.h file.
  29 #
  30 # Usage:
  31 #    gloffsets.py >glapioffsets.h
  32 #
  33 # Dependencies:
  34 #    The gl.spec file from the SI must be in the current directory.
  35 #
  36 # Brian Paul  3 February 2000
  37
  38
  39 import string
  40 import re
  41
  42
  43 def PrintHead():
  44         print '/* DO NOT EDIT - This file generated automatically by gloffsets.py script */'
  45         print '#ifndef _GLAPI_OFFSETS_H_'
  46         print '#define _GLAPI_OFFSETS_H_'
  47         print ''
  48         return
  49 #endif
  50
  51
  52 def PrintTail():
  53         print ''
  54         print '#endif'
  55 #endif
  56
  57
  58 def GenerateDefine(name, offset):
  59         s = '#define _gloffset_' + name + ' ' + str(offset)
  60         return s;
  61 #enddef
  62
  63
  64 def PrintDefines():
  65         functionPattern = re.compile('^[a-zA-Z0-9]+\(')
  66         functionNamePattern = re.compile('^[a-zA-Z0-9]+')
  67
  68         funcName = ''
  69
  70         maxOffset = 0
  71         offsetInfo = { }
  72
  73         f = open('gl.spec')
  74         for line in f.readlines():
  75
  76                 m = functionPattern.match(line)
  77                 if m:
  78                         # extract funcName
  79                         n = functionNamePattern.findall(line)
  80                         funcName = n[0]
  81
  82                 m = string.split(line)
  83                 if len(m) > 1:
  84                         if m[0] == 'param':
  85                                 paramName = m[1]
  86                         if m[0] == 'offset':
  87                                 if m[1] == '?':
  88                                         #print 'WARNING skipping', funcName
  89                                         noop = 0
  90                                 else:
  91                                         funcOffset = int(m[1])
  92                                         if funcOffset > maxOffset:
  93                                                 maxOffset = funcOffset
  94                                         s = GenerateDefine(funcName, funcOffset)
  95                                         if offsetInfo.has_key(funcOffset):
  96                                                 print 'ERROR: offset', funcOffset, 'already used!'
  97                                                 raise ERROR
  98                                         else:
  99                                                 offsetInfo[funcOffset] = s;
 100                                         #endif
 101                                 #endif
 102                         #endif
 103                 #endif
 104         #endfor
 105
 106         # Now print the #defines in order of dispatch offset
 107         for i in range(0, maxOffset + 1):
 108                 if offsetInfo.has_key(i):
 109                         print offsetInfo[i]
 110                 else:
 111                         print 'ERROR: missing offset:', i
 112                         raise ERROR
 113
 114 #enddef
 115
 116
 117
 118 PrintHead()
 119 PrintDefines()
 120 PrintTail()