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src/subversion/build/generator/gen_base.py  view on Meta::CPAN

  def compute_hdr_deps(self):
    """Compute the dependencies of each header file"""

    include_deps = IncludeDependencyInfo(self.compute_hdrs(),
        list(map(native_path, self.private_built_includes)))

    for objectfile, sources in self.graph.get_deps(DT_OBJECT):
      assert len(sources) == 1
      source = sources[0]

      # Generated .c files must depend on all headers their parent .i file
      # includes
      if isinstance(objectfile, SWIGObject):
        swigsources = self.graph.get_sources(DT_SWIG_C, source)
        assert len(swigsources) == 1
        ifile = swigsources[0]
        assert isinstance(ifile, SWIGSource)

        c_includes, swig_includes = \
            include_deps.query_swig(native_path(ifile.filename))
        for include_file in c_includes:
          self.graph.add(DT_OBJECT, objectfile, build_path(include_file))
        for include_file in swig_includes:
          self.graph.add(DT_SWIG_C, source, build_path(include_file))

      # Any non-swig C/C++ object must depend on the headers its parent
      # .c or .cpp includes. Note that 'object' includes gettext .mo files,
      # Java .class files, and .h files generated from Java classes, so
      # we must filter here.
      elif isinstance(source, SourceFile) and \
          os.path.splitext(source.filename)[1] in ('.c', '.cpp'):
        for include_file in include_deps.query(native_path(source.filename)):
          self.graph.add(DT_OBJECT, objectfile, build_path(include_file))

  def write_sqlite_headers(self):
    "Transform sql files into header files"

    import transform_sql
    for hdrfile, sqlfile in self.graph.get_deps(DT_SQLHDR):
      new_hdrfile = hdrfile + ".new"
      new_file = open(new_hdrfile, 'w')
      transform_sql.main(sqlfile[0], new_file)
      new_file.close()

      def identical(file1, file2):
        try:
          if filecmp.cmp(new_hdrfile, hdrfile):
            return True
          else:
            return False
        except:
          return False

      if identical(new_hdrfile, hdrfile):
        os.remove(new_hdrfile)
      else:
        try:
          os.remove(hdrfile)
        except: pass
        os.rename(new_hdrfile, hdrfile)


class DependencyGraph:
  """Record dependencies between build items.

  See the DT_* values for the different dependency types. For each type,
  the target and source objects recorded will be different. They could
  be file names, Target objects, install types, etc.
  """

  def __init__(self):
    self.deps = { }     # type -> { target -> [ source ... ] }
    for dt in dep_types:
      self.deps[dt] = { }

  def add(self, type, target, source):
    if target in self.deps[type]:
      self.deps[type][target].append(source)
    else:
      self.deps[type][target] = [ source ]

  def bulk_add(self, type, target, sources):
    if target in self.deps[type]:
      self.deps[type][target].extend(sources)
    else:
      self.deps[type][target] = sources[:]

  def get_sources(self, type, target, cls=None):
    sources = self.deps[type].get(target, [ ])
    if not cls:
      return sources
    filtered = [ ]
    for src in sources:
      if isinstance(src, cls):
        filtered.append(src)
    return filtered

  def get_all_sources(self, type):
    sources = [ ]
    for group in self.deps[type].values():
      sources.extend(group)
    return sources

  def get_deps(self, type):
    return list(self.deps[type].items())

# dependency types
dep_types = [
  'DT_INSTALL',  # install areas. e.g. 'lib', 'base-lib'
  'DT_OBJECT',   # an object filename, depending upon .c filenames
  'DT_SWIG_C',   # a swig-generated .c file, depending upon .i filename(s)
  'DT_LINK',     # a libtool-linked filename, depending upon object fnames
  'DT_NONLIB',   # filename depends on object fnames, but isn't linked to them
  'DT_SQLHDR',   # header generated from a .sql file
  ]

# create some variables for these
for _dt in dep_types:
  # e.g. DT_INSTALL = 'DT_INSTALL'
  globals()[_dt] = _dt