Class: Rbind::RClass

Inherits:
RNamespace show all
Defined in:
lib/rbind/core/rclass.rb

Defined Under Namespace

Classes: ChildClass, ParentClass

Instance Attribute Summary collapse

Attributes inherited from RNamespace

#consts, #operation_alias, #root, #type_alias

Attributes inherited from RDataType

#check_type, #invalid_value, #typedef

Attributes inherited from RBase

#alias, #auto_alias, #cname, #csignature, #doc, #extern_package_name, #ignore, #name, #namespace, #owner, #signature, #version

Instance Method Summary collapse

Methods inherited from RNamespace

#add_const, #add_const_val, #add_default_types, #add_namespace, #add_operation, #add_simple_type, #add_simple_types, #add_type, #add_type_alias, #const, #container?, default_operators, #delete_type, #each_const, #each_container, #each_operation, #each_type, #enum_hash, #extern?, #method_missing, #operation?, #root?, #type, #type?, #types, #use_namespace, #used_extern_types

Methods included from Hooks

included

Methods inherited from RDataType

#==, #check_type?, #cname, #const?, #container?, #ownership?, #ptr?, #raw?, #ref?, #remove_const, #remove_ownership, #remove_ptr, #remove_ref, #template?, #to_const, #to_ownership, #to_ptr, #to_raw, #to_ref, #to_single_ptr, #typedef?

Methods inherited from RBase

basename, #binding, #delete!, #doc?, #extern?, #full_name, #generate_signatures, #ignore?, #map_to_namespace, namespace, #namespace?, normalize, #overwrite_c, #overwrite_ruby, #rename, #specialize_ruby, split_name, to_cname, #to_s

Constructor Details

#initialize(name, *parent_classes) ⇒ RClass

Returns a new instance of RClass.



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# File 'lib/rbind/core/rclass.rb', line 10

def initialize(name,*parent_classes)
    super(name)
    @parent_classes  = Hash.new
    @child_classes  = Hash.new
    @attributes = Hash.new
    parent_classes.flatten!
    parent_classes.each do |p|
        add_parent(p)
    end
    # we have to disable the type check for classes
    # otherwise derived types cannot be parsed
    @check_type = false
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Rbind::RNamespace

Instance Attribute Details

#attributes ⇒ Object (readonly)

Returns the value of attribute attributes.



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# File 'lib/rbind/core/rclass.rb', line 5

def attributes
  @attributes
end

#parent_classes(accessor = :public) ⇒ Object (readonly)

Returns the value of attribute parent_classes.



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# File 'lib/rbind/core/rclass.rb', line 4

def parent_classes
  @parent_classes
end

#polymorphic ⇒ Object

Returns the value of attribute polymorphic.



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# File 'lib/rbind/core/rclass.rb', line 6

def polymorphic
  @polymorphic
end

Instance Method Details

#add_attribute(attr) ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 41

def add_attribute(attr)
    if attr.namespace?
        type(attr.namespace).add_attribute(attr)
    else
        if @attributes.has_key? attr.name
            raise "#An attribute with the name #{attr.name} already exists"
        end
        attr.owner = self
        @attributes[attr.name] = attr
        # add getter and setter methods to the object
        add_operation(RGetter.new(attr)) if attr.readable?
        add_operation(RSetter.new(attr)) if attr.writeable?
    end
    self
end

#add_child(klass, accessor = :public) ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 261

def add_child(klass,accessor=:public)
    klass,accessor = if klass.is_a?(ChildClass)
                         [klass.type,klass.accessor]
                     else
                         [klass,accessor]
                     end
    if !klass.name || klass.name.empty?
        raise ArgumentError, "klass name is empty"
    end
    if child? klass
        raise ArgumentError,"#A child class with the name #{klass.name} already exists"
    end
    if klass.full_name == full_name || klass == self
        raise ArgumentError,"class #{klass.full_name} cannot be child of its self"
    end
    @polymorphic ||= true
    @child_classes[klass.name] = ChildClass.new(klass,accessor)
    klass.add_parent(self,accessor) unless klass.parent?(self)
    self
end

#add_parent(klass, accessor = :public) ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 213

def add_parent(klass,accessor=:public)
    klass,accessor = if klass.is_a?(ParentClass)
                         [klass.type,klass.accessor]
                     else
                         [klass,accessor]
                     end
    if !klass.name || klass.name.empty?
        raise ArgumentError, "klass name is empty"
    end
    if parent? klass
        puts "ignore: parent class #{klass.name} was added multiple time to class #{name}"
        return self
    end
    if klass.full_name == full_name || klass == self
        puts "ignore: class #{klass.name} cannot be parent class of itself"
        return self
    end
    @parent_classes[klass.name] = ParentClass.new(klass,accessor)
      raise "Cannot use namespace #{klass.full_name} as parent class for #{self.full_name}" unless(klass.respond_to?(:child?))
    klass.add_child(self,accessor) unless klass.child?(self)
    self
end

#attribute(name) ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 73

def attribute(name)
    attrib = @attributes[name]
    attrib ||= begin
                   p = parent_classes.find do |k|
                       k.attribute(name)
                   end
                   a = p.attribute(name).dup if p
                   a.owner = self if a
                   a
               end
end

#basic_type? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbind/core/rclass.rb', line 28

def basic_type?
    false
end

#cdelete_method ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 163

def cdelete_method
    if @cdelete_method
        @cdelete_method
    else
        if cname =~ /^#{RBase.cprefix}(.*)/
            "#{RBase.cprefix}delete_#{$1}"
        else
            "#{RBase.cprefix}delete_#{name}"
        end
    end
end

#child?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbind/core/rclass.rb', line 282

def child?(name)
    name = if name.respond_to?(:name)
               name.name
           else
               name
           end
    @child_classes.key?(name)
end

#child_class(name) ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 291

def child_class(name)
    name = if name.respond_to?(:name)
               name.name
           else
               name
           end
    @child_classes[name].type
end

#child_classes(accessor = :public) ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 300

def child_classes(accessor = :public)
    childs = @child_classes.values.find_all do |k|
        k.accessor == accessor
    end
    childs.map(&:type)
end

#constructor? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbind/core/rclass.rb', line 32

def constructor?
    ops = Array(operation(name,false))
    return false unless ops
    op = ops.find do |op|
        op.constructor?
    end
    !!op
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbind/core/rclass.rb', line 175

def empty?
    super && parent_classes.empty? && attributes.empty?
end

#operation(name, raise_ = true) ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 141

def operation(name,raise_=true)
    ops = if @operations.has_key? name
              @operations[name].dup
          else
              []
          end
    parent_classes.each do |k|
        other_ops = Array(k.operation(name,false))
        other_ops.delete_if do |other_op|
            ops.include? other_op
        end
        ops += other_ops
    end
    if(ops.size == 1)
        ops.first
    elsif ops.empty?
        raise "#{full_name} has no operation called #{name}." if raise_
    else
        ops
    end
end

#operations ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 85

def operations
    # temporarily add all base class operations
    own_ops = @operations.dup
    parent_classes.each do |k|
    add_operation RCastOperation.new("castTo#{k.name.gsub(/[:,<>]/,"_")}",k)
        if k.polymorphic? && polymorphic?
            add_operation RCastOperation.new("castFrom#{k.name.gsub(/[:,<>]/,"_")}",self,k)
        end
    k.operations.each do |other_ops|
        next if other_ops.empty?
        ops = if @operations.has_key?(other_ops.first.name)
 @operations[other_ops.first.name]
        else
 []
        end
        other_ops.delete_if do |other_op|
      next true if !other_op || other_op.constructor? || other_op.static?
      #check for name hiding
      if own_ops.has_key?(other_op.name)
          #puts "#{other_op} is shadowed by #{own_ops[other_op.name].first}"
          next true
      end
      op = ops.find do |o|
          o == other_op
      end
      next false if !op
      next true if op.base_class == self
      next true if op.base_class == other_op.base_class

      # ambiguous name look up due to multi
      # inheritance
      op.ambiguous_name = true
      other_op.ambiguous_name = true
      false
        end
        other_ops = other_ops.map(&:dup)
        other_ops.each do |other|
      old = other.alias
      add_operation other
        end
    end
    end
    # copy embedded arrays other wise they might get modified outside
    result = @operations.values.map(&:dup)
    @operations = own_ops
    result
end

#parent?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbind/core/rclass.rb', line 236

def parent?(name)
    name = if name.respond_to?(:name)
               name.name
           else
               name
           end
    @parent_classes.key?(name)
end

#parent_class(name) ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 245

def parent_class(name)
    name = if name.respond_to?(:name)
               name.name
           else
               name
           end
    @parent_class[name].type
end

#polymorphic? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbind/core/rclass.rb', line 24

def polymorphic?
    !!@polymorphic
end

#pretty_print(pp) ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 197

def pretty_print(pp)
    super
    unless attributes.empty?
        pp.nest(2) do
            pp.breakable
            pp.text "Attributes:"
            pp.nest(2) do
                attributes.each do |a|
                    pp.breakable
                    pp.pp(a)
                end
            end
        end
    end
end

#pretty_print_name ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 179

def pretty_print_name
    str = "#{"template " if template?}class #{full_name}"
    unless parent_classes.empty?
        parents = parent_classes.map do |p|
            p.full_name
        end
        str += " : " +  parents.join(", ")
    end
    unless child_classes.empty?
        childs = child_classes.map do |c|
            c.full_name
        end
        str += " Childs: " +  childs.join(", ")
    end

    str
end

#used_namespaces ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 133

def used_namespaces
    namespaces = super.clone
    parent_classes.each do |k|
        namespaces += k.used_namespaces
    end
    namespaces
end