utils/generate_glesv1/generate_wrappers.py

   1 #!/usr/bin/python
   2 # gnerate_wrappers.py: Parse header and output libhybris binding code
   3 # Adapted for libhybris from apkenv-wrapper-generator
   4 #
   5 # apkenv-wrapper-generator version:
   6 # Copyright (C) 2012 Thomas Perl <m@thp.io>; 2012-10-19
   7 #
   8 # libhybris version:
   9 # Copyright (C) 2013 Jolla Ltd.
  10 # Contact: Thomas Perl <thomas.perl@jollamobile.com>
  11 #
  12 # Redistribution and use in source and binary forms, with or without
  13 # modification, are permitted provided that the following conditions are met:
  14 #
  15 # 1. Redistributions of source code must retain the above copyright notice, this
  16 #    list of conditions and the following disclaimer.
  17 # 2. Redistributions in binary form must reproduce the above copyright notice,
  18 #    this list of conditions and the following disclaimer in the documentation
  19 #    and/or other materials provided with the distribution.
  20 #
  21 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  22 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  23 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  24 # DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
  25 # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  26 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  27 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  28 # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  30 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31 #
  32
  33 import re
  34 import os
  35 import sys
  36
  37 funcs = []
  38
  39 # Some special cases to to avoid having to parse the full C grammar
  40 FIXED_MAPPINGS = {
  41         'GLint *': 'GLint *',
  42         'GLuint *': 'GLuint *',
  43         'GLsizei *': 'GLsizei *',
  44         'GLfloat eqn[4]': 'GLfloat[4]',
  45         'GLfixed eqn[4]': 'GLfixed[4]',
  46         'GLfixed mantissa[16]': 'GLfixed[16]',
  47         'GLint exponent[16]': 'GLint[16]',
  48         'GLfloat eqn[4]': 'GLfloat[4]',
  49         'GLvoid **': 'GLvoid **',
  50         'GLfloat *': 'GLfloat *',
  51         'GLfixed *': 'GLfixed *',
  52 }
  53
  54 # Never generate wrappers for these functions
  55 BLACKLISTED_FUNCS = [
  56 ]
  57
  58 def clean_arg(arg):
  59     arg = arg.replace('__restrict', '')
  60     arg = arg.replace('__const', '')
  61     arg = arg.replace('const', '')
  62     return arg.strip()
  63
  64 def mangle(name):
  65     return 'my_' + name
  66
  67 class Argument:
  68     def __init__(self, type_, name):
  69         self.type_ = type_
  70         self.name = name
  71
  72 class Function:
  73     def __init__(self, retval, name, args):
  74         self.retval = retval
  75         self.name = name
  76         self.raw_args = args
  77         self.parsing_error = None
  78         self.args = list(self._parse_args(args))
  79
  80     def _parse_args(self, args):
  81         for arg in map(clean_arg, args.split(',')):
  82             arg = clean_arg(arg)
  83             xarg = re.match(r'^(.*?)([A-Za-z0-9_]+)$', arg)
  84             if not xarg:
  85                 # Unknown argument
  86                 if arg in FIXED_MAPPINGS:
  87                     yield Argument(FIXED_MAPPINGS[arg], '__undefined__')
  88                     continue
  89                 self.parsing_error = 'Could not parse: ' + repr(arg)
  90                 print self.parsing_error
  91                 continue
  92             type_, name = xarg.groups()
  93             if type_ == '':
  94                 type_ = name
  95                 name = '__undefined__'
  96             yield Argument(type_, name)
  97
  98 if len(sys.argv) != 2:
  99     print >>sys.stderr, """
 100     Usage: %s glesv1_functions.h
 101     """ % (sys.argv[0],)
 102     sys.exit(1)
 103
 104 filename = sys.argv[1]
 105
 106 for line in open(filename):
 107     if line.startswith('/*'):
 108         continue
 109     retval, funcname, args = re.match(r'^(.+ [*]?)([A-Za-z0-9_]+)\((.*)\);\s*$', line).groups()
 110     retval, funcname, args = [x.strip() for x in (retval, funcname, args)]
 111     if funcname not in BLACKLISTED_FUNCS:
 112         funcs.append(Function(retval, funcname, args))
 113
 114 LIBRARY_NAME = 'glesv1_cm'
 115
 116 for function in funcs:
 117     args = [a.type_.strip() for a in function.args if a.type_.strip() not in ('', 'void')]
 118     if function.retval == 'void':
 119         print 'HYBRIS_IMPLEMENT_VOID_FUNCTION%d(%s, %s);' % (len(args), LIBRARY_NAME, ', '.join([function.name] + args))
 120     else:
 121         print 'HYBRIS_IMPLEMENT_FUNCTION%d(%s, %s, %s);' % (len(args), LIBRARY_NAME, function.retval, ', '.join([function.name] + args))
 122