scripts/vcstocl_quirks.py

   1 # VCSToChangeLog Quirks for the GNU C Library.
   2
   3 # Copyright (C) 2019-2020 Free Software Foundation, Inc.
   4 #
   5 # The GNU C Library is free software; you can redistribute it and/or
   6 # modify it under the terms of the GNU Lesser General Public
   7 # License as published by the Free Software Foundation; either
   8 # version 2.1 of the License, or (at your option) any later version.
   9 #
  10 # The GNU C Library is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 # Lesser General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU Lesser General Public
  16 # License along with the GNU C Library; if not, see
  17 # <http://www.gnu.org/licenses/>.
  18
  19 from frontend_c import Frontend
  20 from vcs_to_changelog import ProjectQuirks
  21 import re
  22
  23 class GlibcProjectQuirks(ProjectQuirks):
  24     repo = 'git'
  25
  26     IGNORE_LIST = [
  27         'ChangeLog',
  28         'sysdeps/x86_64/dl-trampoline.h'
  29     ]
  30
  31     MACRO_QUIRKS = \
  32         [{'orig': r'ElfW\((\w+)\)', 'sub': r'\1__ELF_NATIVE_CLASS_t'},
  33          {'orig': r'(libc_freeres_fn)\s*\((\w+)\)', 'sub': r'static void \1__\2 (void)'},
  34          {'orig': r'(IMPL)\s*\((\w+), .*\)$', 'sub': r'static void \1__\2 (void) {}'},
  35          {'orig': r'__(BEGIN|END)_DECLS', 'sub': r''},
  36          {'orig': 'weak_function', 'sub': '__attribute__ ((weak))'},
  37          {'orig': r'ATTRIBUTE_(CONST|MALLOC|PURE|FORMAT)',
  38           'sub': r'__attribute__ ((\1))'},
  39          {'orig': r'__THROW', 'sub': r'__attribute__ ((__nothrow__ __LEAF))'},
  40          {'orig': r'__THROWNL', 'sub': r'__attribute__ ((__nothrow__))'},
  41          {'orig': r'__nonnull \(\(([^)]+)\)\)',
  42           'sub': r'__attribute__ ((__nonnull__ \1))'},
  43          {'orig': r'([^_])attribute_(\w+)', 'sub': r'\1__attribute__ ((\2))'},
  44          {'orig': r'^attribute_(\w+)', 'sub': r'__attribute__ ((\1))'}]
  45
  46     def __init__(self, debug):
  47         self.debug = debug
  48         ''' Build a list of macro calls used for symbol versioning and attributes.
  49
  50         glibc uses a set of macro calls that do not end with a semi-colon and hence
  51         breaks our parser.  Identify those calls from include/libc-symbols.h and
  52         filter them out.
  53         '''
  54         with open('include/libc-symbols.h') as macrofile:
  55             op = macrofile.readlines()
  56             op = Frontend.remove_comments(self, op)
  57             self.C_MACROS = [re.sub(r'.*define (\w+).*', r'\1', x[:-1]) for x in op \
  58                              if 'define ' in x]
  59
  60         super().__init__()
  61
  62 def get_project_quirks(debug):
  63     ''' Accessor function.
  64     '''
  65     return GlibcProjectQuirks(debug)