Class: Hive::Type::Amount

Inherits:
BaseType show all
Defined in:
lib/hive/type/amount.rb

Overview

See: github.com/xeroc/piston-lib/blob/34a7525cee119ec9b24a99577ede2d54466fca0e/steembase/operations.py

Constant Summary collapse

ASSET_HBD = 
'HBD'
NAI_HBD = 
'@@000000013'
ASSET_HIVE = 
'HIVE'
NAI_HIVE = 
'@@000000021'
ASSET_VESTS = 
'VESTS'
NAI_VESTS = 
'@@000000037'
ASSET_TBD = 
'TBD'
NAI_TBD = 
'@@000000013'
ASSET_TESTS = 
'TESTS'
NAI_TESTS = 
'@@000000021'
VALID_ASSETS = 
[ASSET_HBD, ASSET_HIVE, ASSET_VESTS, ASSET_TBD, ASSET_TESTS]

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(value) ⇒ Amount

Returns a new instance of Amount.



27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
 
# File 'lib/hive/type/amount.rb', line 27

def initialize(value)
  super(:amount, value)
  
  case value
  when Array
    @amount, @precision, @nai = value
    @asset = case @nai
    when NAI_HBD then ASSET_HBD
    when NAI_HIVE then ASSET_HIVE
    when NAI_VESTS then ASSET_VESTS
    else; raise TypeError, "Asset #{@nai} unknown."
    end
    
    @amount = "%.#{@precision}f" % (@amount.to_f / 10 ** @precision)
  when Hash
    @amount, @precision, @nai = value.map do |k, v|
      v if %i(amount precision nai).include? k.to_sym
    end.compact
    
    @asset = case @nai
    when NAI_HBD then ASSET_HBD
    when NAI_HIVE then ASSET_HIVE
    when NAI_VESTS then ASSET_VESTS
    else; raise TypeError, "Asset #{@nai} unknown."
    end
    
    @amount = "%.#{@precision}f" % (@amount.to_f / 10 ** @precision)
  when Amount
    @precision = value.precision
    @nai = value.nai
    @asset = value.asset
    @amount = value.amount
  else
    @amount, @asset = value.strip.split(' ') rescue ['', '']
    
    # Usually, we will see unexpected 'STEEM' and 'SBD' from Hive-HF23
    # because deserialization contains them for app compatibility.
    @asset = case @asset
    when 'STEEM' then ASSET_HIVE
    when 'SBD' then ASSET_HBD
    else
      warn "Got unexpected asset: #{value}" unless VALID_ASSETS.include? @asset
      
      @asset
    end
    
    @precision = case @asset
    when ASSET_HIVE then 3
    when ASSET_VESTS then 6
    when ASSET_HBD then 3
    when ASSET_TESTS then 3
    when ASSET_TBD then 3
    else; raise TypeError, "Asset #{@asset} unknown."
    end
  end
end

Instance Attribute Details

#amount ⇒ Object (readonly)

Returns the value of attribute amount.



13
14
15
 
# File 'lib/hive/type/amount.rb', line 13

def amount
  @amount
end

#asset ⇒ Object (readonly)

Returns the value of attribute asset.



13
14
15
 
# File 'lib/hive/type/amount.rb', line 13

def asset
  @asset
end

#nai ⇒ Object (readonly)

Returns the value of attribute nai.



13
14
15
 
# File 'lib/hive/type/amount.rb', line 13

def nai
  @nai
end

#precision ⇒ Object (readonly)

Returns the value of attribute precision.



13
14
15
 
# File 'lib/hive/type/amount.rb', line 13

def precision
  @precision
end

Class Method Details

.to_bytes(amount) ⇒ Object 



23
24
25
 
# File 'lib/hive/type/amount.rb', line 23

def self.to_bytes(amount)
  new(amount).to_bytes
end

.to_h(amount) ⇒ Object 



15
16
17
 
# File 'lib/hive/type/amount.rb', line 15

def self.to_h(amount)
  new(amount).to_h
end

.to_s(amount) ⇒ Object 



19
20
21
 
# File 'lib/hive/type/amount.rb', line 19

def self.to_s(amount)
  new(amount).to_s
end

Instance Method Details

#to_a ⇒ Object 



93
94
95
96
97
98
99
 
# File 'lib/hive/type/amount.rb', line 93

def to_a
  case @asset
  when ASSET_HIVE then [(@amount.to_f * 1000).to_i.to_s, 3, NAI_HIVE]
  when ASSET_VESTS then [(@amount.to_f * 1000000).to_i.to_s, 6, NAI_VESTS]
  when ASSET_HBD then [(@amount.to_f * 1000).to_i.to_s, 3, NAI_HBD]
  end
end

#to_bytes ⇒ Object 



84
85
86
87
88
89
90
91
 
# File 'lib/hive/type/amount.rb', line 84

def to_bytes
  asset = @asset.ljust(7, "\x00")
  amount = (@amount.to_f * 10 ** @precision).round
  
  [amount].pack('q') +
  [@precision].pack('c') +
  asset
end

#to_h ⇒ Object 



101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
 
# File 'lib/hive/type/amount.rb', line 101

def to_h
  case @asset
  when ASSET_HIVE then {
    amount: (@amount.to_f * 1000).to_i.to_s,
    precision: 3,
    nai: NAI_HIVE
  }
  when ASSET_VESTS then {
    amount: (@amount.to_f * 1000000).to_i.to_s,
    precision: 6,
    nai: NAI_VESTS
  }
  when ASSET_HBD then {
    amount: (@amount.to_f * 1000).to_i.to_s,
    precision: 3,
    nai: NAI_HBD
  }
  end
end

#to_s ⇒ Object 



121
122
123
 
# File 'lib/hive/type/amount.rb', line 121

def to_s
  "#{@amount} #{@asset}"
end