Class: FFI::Enum

Inherits:
Type
  • Object
show all
Defined in:
lib/ffi/enum.rb,
ext/ffi_c/Type.c

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(info, tag = nil) ⇒ Enum

Returns a new instance of Enum.



34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
 
# File 'lib/ffi/enum.rb', line 34

def initialize(info, tag=nil)
  @tag = tag
  @kv_map = Hash.new
  @vk_map = Hash.new
  unless info.nil?
    last_cst = nil
    value = 0
    info.each do |i|
      case i
      when Symbol
        @kv_map[i] = value
        @vk_map[value] = i
        last_cst = i
        value += 1
      when Integer
        @kv_map[last_cst] = i
        @vk_map[i] = last_cst
        value = i+1
      end
    end
  end
end

Instance Attribute Details

#tag ⇒ Object (readonly)

Returns the value of attribute tag.



32
33
34
 
# File 'lib/ffi/enum.rb', line 32

def tag
  @tag
end

Instance Method Details

#[](query) ⇒ Object Also known as: find 



61
62
63
64
65
66
67
68
 
# File 'lib/ffi/enum.rb', line 61

def [](query)
  case query
  when Symbol
    @kv_map[query]
  when Integer
    @vk_map[query]
  end
end

#symbol_map ⇒ Object Also known as: to_h 



71
72
73
 
# File 'lib/ffi/enum.rb', line 71

def symbol_map
  @kv_map
end

#symbols ⇒ Object 



57
58
59
 
# File 'lib/ffi/enum.rb', line 57

def symbols
  @kv_map.keys
end