Class: RgGen::VHDL::Utility::Identifier

Inherits:
SystemVerilog::Common::Utility::Identifier
  • Object
show all
Defined in:
lib/rggen/vhdl/utility/identifier.rb

Instance Method Summary collapse

Instance Method Details

#__array_select__(array_index, lsb, width) ⇒ Object 



17
18
19
20
21
22
23
24
 
# File 'lib/rggen/vhdl/utility/identifier.rb', line 17

def __array_select__(array_index, lsb, width)
  if @width
    lsb = __serialized_lsb__(array_index, lsb)
    __array_slice__(lsb, width || @width)
  else
    "(#{__serialized_index__(array_index)})"
  end
end

#__array_slice__(lsb, width) ⇒ Object 



26
27
28
29
30
31
32
33
34
 
# File 'lib/rggen/vhdl/utility/identifier.rb', line 26

def __array_slice__(lsb, width)
  msb =
    if integer?(width)
      __reduce_array__([lsb, width - 1], :+, 0)
    else
      __reduce_array__([lsb, width, -1], :+, 0)
    end
  "(#{msb} downto #{lsb})"
end

#__create_select__(array_index_or_lsb, lsb_or_width, width) ⇒ Object 



7
8
9
10
11
12
13
14
15
 
# File 'lib/rggen/vhdl/utility/identifier.rb', line 7

def __create_select__(array_index_or_lsb, lsb_or_width, width)
  if array_index_or_lsb.is_a?(Array)
    __array_select__(array_index_or_lsb, lsb_or_width, width)
  elsif lsb_or_width
    __array_slice__(array_index_or_lsb, lsb_or_width)
  else
    "(#{array_index_or_lsb})"
  end
end