Class: Bake::Loader

Inherits:
Object
  • Object
show all
Defined in:
lib/bake/model/loader.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Loader

Returns a new instance of Loader.



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# File 'lib/bake/model/loader.rb', line 22

def initialize
  @env = RGen::Environment.new

  fcm = RGen::Util::FileCacheMap.new(".bake", ".cache")
  fcm.version_info = Version.number

  if !Bake.options.dry
    @DumpFileCache = RGen::Fragment::DumpFileCache.new(fcm)
  else
    @DumpFileCache = nil
  end

  @model = RGen::Fragment::FragmentedModel.new(:env => @env)

  @globalFilterStrMap = {
    Bake::Metamodel::StartupSteps => "STARTUP",
    Bake::Metamodel::PreSteps => "PRE",
    Bake::Metamodel::PostSteps => "POST",
    Bake::Metamodel::ExitSteps => "EXIT",
    Bake::Metamodel::CleanSteps => "CLEAN"
  }
end

Instance Attribute Details

#model ⇒ Object (readonly)

Returns the value of attribute model.



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# File 'lib/bake/model/loader.rb', line 20

def model
  @model
end

Instance Method Details

#applyFilterOnArray(a) ⇒ Object 



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# File 'lib/bake/model/loader.rb', line 102

def applyFilterOnArray(a)
  toRemove = []
  a.each do |elem|
    if filterElement?(elem)
      toRemove << elem
    else
      applyFilterOnElement(elem)
    end
  end
  toRemove.each { |r| r.parent = nil }
end

#applyFilterOnElement(elem) ⇒ Object 



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# File 'lib/bake/model/loader.rb', line 114

def applyFilterOnElement(elem)
  return if elem.nil?
  elem.class.ecore.eAllReferences.each do |f|
   next unless f.containment
   begin
     childData = elem.getGeneric(f.name)
   rescue Exception => ex
     next
   end
   next if childData.nil?
   if (Array === childData)
     applyFilterOnArray(childData)
   elsif Metamodel::ModelElement === childData
     if filterElement?(childData)
       childData.parent = nil
     else
       applyFilterOnElement(childData)
     end
   end
  end
end

#filterElement?(elem) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/bake/model/loader.rb', line 79

def filterElement?(elem)
  return false if Bake::Metamodel::Project === elem

  # 1st prio: explicit single filter
  if elem.filter != ""
    return true if  Bake.options.exclude_filter.include?elem.filter
    return false if Bake.options.include_filter.include?elem.filter
  end

  # 2nd prio: explicit global filter
  if defined?(elem.parent)
    globalFilterStr = @globalFilterStrMap[elem.parent.class]
    if (globalFilterStr)
        return true if  Bake.options.exclude_filter.include?globalFilterStr
        return false if Bake.options.include_filter.include?globalFilterStr
    end
  end

  # 3nd prio: default
  return true if elem.default == "off"
  false
end

#load(filename) ⇒ Object 



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# File 'lib/bake/model/loader.rb', line 136

def load(filename)
  sumErrors = 0

  if not File.exists?filename
    Bake.formatter.printError("Error: #{filename} does not exist")
    ExitHelper.exit(1)
  end

  frag = nil
  if not Bake.options.nocache
    frag = load_internal(filename) # regular load
    frag = nil if frag.root_elements.length > 0 and filename != frag.root_elements[0].file_name
  end

  if frag.nil?
    def @DumpFileCache.load(fragment)
      :invalid
    end
    frag = load_internal(filename, !Bake.options.nocache)
  end

  frag.data[:problems].each do |p|
    Bake.formatter.printError(p.message, p.file, p.line)
  end

  if frag.data[:problems].length > 0
    ExitHelper.exit(1)
  end

  applyFilterOnArray(frag.root_elements)

  return frag

end

#load_internal(filename, silent = false) ⇒ Object 



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# File 'lib/bake/model/loader.rb', line 45

def load_internal(filename, silent = false)
  silent = false if Bake.options.debug
  loader = RText::DefaultLoader.new(
    Bake::Language,
    @model,
    :file_provider => proc { [filename] },
    :cache => @DumpFileCache)
  loader.load(:before_load => proc {|fragment, kind|
    case kind
    when :load_update_cache
      if Bake.options.verbose >= 3
        puts "Loading and caching #{fragment.location}" unless silent
      else
        puts "Loading #{fragment.location}" unless silent
      end
    when :load_cached
      if Bake.options.verbose >= 3
        puts "Loading cached #{fragment.location}" unless silent
      else
        puts "Loading #{fragment.location}" unless silent
      end
    when :load
      puts "Loading #{fragment.location}" unless silent
    else
      Bake.formatter.printError("Error: Could not load #{fragment.location}")
      ExitHelper.exit(1)
    end
  })

  frag = @model.fragments[0]
  @model.remove_fragment(frag)
  frag
end