Class: Rbind::RClass

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

Defined Under Namespace

Classes: ParentClass

Instance Attribute Summary collapse

Attributes inherited from RNamespace

#consts, #operation_alias, #root, #type_alias

Attributes inherited from RDataType

#check_type, #invalid_value, #ptr, #ref, #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_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, #extern?, #method_missing, #operation?, #root?, #type, #types, #use_namespace

Methods inherited from RDataType

#==, #check_type?, #cname, #const?, #container?, #ptr?, #raw?, #ref?, #remove_const, #template?, #to_const, #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, #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 8

def initialize(name,*parent_classes)
    @parent_classes  = Hash.new
    @attributes = Hash.new
    parent_classes.flatten!
    parent_classes.each do |p|
        add_parent(p)
    end
    super(name)
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

Instance Method Details

#add_attribute(attr) ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 31

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_parent(klass, accessor = :public) ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 186

def add_parent(klass,accessor=:public)
    klass,accessor = if klass.is_a?(ParentClass)
                         [klass.type,klass.accessor]
                     else
                         [klass,accessor]
                     end
    if @parent_classes.has_key? klass.name
        raise ArgumentError,"#A parent 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 parent of its self"
    end
    # we have to disable the type check for the parent class
    # otherwise derived types cannot be parsed
    klass.check_type = false
    @parent_classes[klass.name] = ParentClass.new(klass,accessor)
    self
end

#attribute(name) ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 63

def attribute(name)
    attrib = @attributes[name]
    attrib ||= begin
                   p = parent_classes.find do |k|
                       k.type.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 18

def basic_type?
    false
end

#cdelete_method ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 143

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

#constructor? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbind/core/rclass.rb', line 22

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 155

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 121

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.type.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 75

def operations
    # temporarily add all base class operations
    own_ops = @operations.dup
    parent_classes.each do |k|
        k.type.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?
                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_class(name) ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 205

def parent_class(name)
    @parent_class[name].type
end

#pretty_print(pp) ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 170

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 159

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

#used_namespaces ⇒ Object 



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# File 'lib/rbind/core/rclass.rb', line 113

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