Class: LLVM::Function::AttributeCollection

Inherits:
Object
  • Object
show all
Defined in:
lib/llvm/core/value.rb

Instance Method Summary collapse

Constructor Details

#initialize(fun, index) ⇒ AttributeCollection

Returns a new instance of AttributeCollection.



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# File 'lib/llvm/core/value.rb', line 863

def initialize(fun, index)
  @fun = fun
  @index = index
end

Instance Method Details

#add(attr) ⇒ Object 



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# File 'lib/llvm/core/value.rb', line 868

def add(attr)
  attr_ref = case attr
  when Attribute
    attr
  when Symbol, String
    attr_kind_id = attribute_id(attr)
    if attr_kind_id.is_a?(Integer)
      ctx = Context.global
      C.create_enum_attribute(ctx, attr_kind_id, 0)
    else
      attr_kind_id
    end
  else
    raise "Adding unknown attribute type: #{attr.inspect}"
  end
  C.add_attribute_at_index(@fun, @index, attr_ref)
end

#count ⇒ Object 



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# File 'lib/llvm/core/value.rb', line 891

def count
  C.get_attribute_count_at_index(@fun, @index)
end

#remove(attr) ⇒ Object 



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# File 'lib/llvm/core/value.rb', line 886

def remove(attr)
  attr_kind_id = attribute_id(attr)
  C.remove_enum_attribute_at_index(@fun, @index, attr_kind_id)
end

#to_a ⇒ Object 



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# File 'lib/llvm/core/value.rb', line 895

def to_a
  attr_refs = nil
  n = count
  FFI::MemoryPointer.new(:pointer, n) do |p|
    C.get_attributes_at_index(@fun, @index, p)
    attr_refs = p.read_array_of_type(:pointer, :read_pointer, n)
  end

  attr_refs.map { |e| Attribute.send(:from_ptr, e) }
end