Class: Comet::HeaderGenerator

Inherits:
Object
  • Object
show all
Defined in:
lib/comet-html/header-generator.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(object) ⇒ HeaderGenerator

Returns a new instance of HeaderGenerator.



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# File 'lib/comet-html/header-generator.rb', line 5

def initialize object
  @object = object
end

Instance Attribute Details

#object ⇒ Object (readonly)

Returns the value of attribute object.



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# File 'lib/comet-html/header-generator.rb', line 3

def object
  @object
end

#source ⇒ Object (readonly)

Returns the value of attribute source.



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# File 'lib/comet-html/header-generator.rb', line 3

def source
  @source
end

Instance Method Details

#bound_attributes_definition ⇒ Object 



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# File 'lib/comet-html/header-generator.rb', line 21

def bound_attributes_definition
  return "" if object.implements_ibindable_view?
  "Comet::BoundAttributes bound_attributes;"
end

#friends_def ⇒ Object 



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# File 'lib/comet-html/header-generator.rb', line 61

def friends_def
  result = ""
  object.context.classes.each do |klass|
    result += indent + "friend class #{klass.typename};\n" unless klass == object
  end
  result
end

#generate ⇒ Object 



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# File 'lib/comet-html/header-generator.rb', line 114

def generate
  anchors_def = generate_anchors
  public_properties_def, protected_properties_def, private_properties_def = generate_properties

<<HEADER
class #{object.typename} : public #{object.superclass}
{
#{friends_def}
protected:
  #{bound_attributes_definition}
#{protected_properties_def}
private:
#{anchors_def}
#{private_properties_def}
public:
  #{signaler_definition}
#{public_properties_def}

  #{object.constructor_decl}
  virtual ~#{object.typename}() {}

  void bind_attributes();
  void trigger_binding_updates();
  
#{generate_getters_setters}

  #{object.inline_code}
};
HEADER
end

#generate_anchors ⇒ Object 



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# File 'lib/comet-html/header-generator.rb', line 48

def generate_anchors
  result = ""
  anchor_count = 0
  object.collect_children.each do |child|
    if child.is_anchorable?
      anchor_count += 1
      child.anchor_name = "anchor_#{anchor_count}"
      result += indent + "Comet::CommentElement #{child.anchor_name};\n"
    end
  end
  result
end

#generate_getters_setters ⇒ Object 



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# File 'lib/comet-html/header-generator.rb', line 26

def generate_getters_setters
  result = ""
  object.refs.each do |ref|
    is_ptr = ref.type.end_with? '*'
    if ref.has_getter?
      if is_ptr
        result += indent + "#{ref.type} get_#{ref.name}() const { return #{ref.name}; }\n"
      else
        result += indent + "const #{ref.type}& get_#{ref.name}() const { return #{ref.name}; }\n"
      end
    end
    if ref.has_setter?
      if is_ptr
        result += indent + "virtual void set_#{ref.name}(#{ref.type} __v) { #{ref.name} = __v; }\n"
      else
        result += indent + "virtual void set_#{ref.name}(const #{ref.type}& __v) { #{ref.name} = __v; }\n"
      end
    end
  end
  result
end

#generate_properties ⇒ Object 



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# File 'lib/comet-html/header-generator.rb', line 69

def generate_properties
  protected_properties_def = ""
  public_properties_def    = ""
  private_properties_def   = ""
  if object.is_root?
    protected_properties_def += indent + "#{object.typename}* root;\n"
  else
    public_properties_def  += indent + "#{object.parent.typename}* parent;\n"
    protected_properties_def += indent + "#{object.root.typename}* root;\n"
  end
  object.refs.each do |ref|
    suffix = " = #{ref.default_value}" if ref.has_default_value?
    if ref.is_explicit?
      protected_properties_def += indent + "#{ref.type} #{ref.name}#{suffix};\n"
    elsif ref.is_implicit?
      private_properties_def   += indent + "#{ref.type} #{ref.name}#{suffix};\n"
    end
  end
  ## BEGIN Repeaters
  object.repeaters.each do |repeater|
    protected_properties_def += indent + "Comet::Repeater<#{repeater.list_type}, #{repeater.typename}> #{repeater.repeater_name};\n" 
  end
  if object.class == Repeater
    public_properties_def += indent + "#{object.value_type} #{object.value_name};\n"
  end
  ## END Repeaters
  ## BEGIN SLOTS
  # Slots emanate from the root object.
  if object.is_root?
    all_slots = object.slots
    object.recursively_collect_children.each do |child|
      all_slots += child.slots
    end
    all_slots.each do |slot|
      public_properties_def += indent + "Comet::SlotElement #{slot.slot_ref};\n"
    end
  else
    object.slots.each do |slot|
      public_properties_def += indent + "Comet::SlotElement& #{slot.slot_ref};\n"
    end
  end
  ## END SLOTS
  [public_properties_def, protected_properties_def, private_properties_def]
end

#indent ⇒ Object 



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# File 'lib/comet-html/header-generator.rb', line 9

def indent
  "      "
end

#signaler_definition ⇒ Object 



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# File 'lib/comet-html/header-generator.rb', line 13

def signaler_definition
  return "" if object.implements_ibindable_view?
  # Signaler def. Must be a reference if the object isn't the root object
  signaler_type  = "Comet::Signal<std::string>"
  signaler_type += "&" unless object.parent.nil?
  "#{signaler_type} signaler;"
end