Class: Steem::Type::Amount

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

Overview

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(value) ⇒ Amount

Returns a new instance of Amount.



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# File 'lib/steem/type/amount.rb', line 20

def initialize(value)
  super(:amount, value)
  
  case value
  when Array
    @amount, @precision, @nai = value
    @asset = case @nai
    when '@@000000013' then 'SBD'
    when '@@000000021' then 'STEEM'
    when '@@000000037' then '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 '@@000000013' then 'SBD'
    when '@@000000021' then 'STEEM'
    when '@@000000037' then '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 ['', '']
    @precision = case @asset
    when 'STEEM' then 3
    when 'VESTS' then 6
    when 'SBD' then 3
    when 'TESTS' then 3
    when 'TBD' then 3
    else; raise TypeError, "Asset #{@asset} unknown."
    end
  end
end

Instance Attribute Details

#amount ⇒ Object (readonly)

Returns the value of attribute amount.



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# File 'lib/steem/type/amount.rb', line 6

def amount
  @amount
end

#asset ⇒ Object (readonly)

Returns the value of attribute asset.



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# File 'lib/steem/type/amount.rb', line 6

def asset
  @asset
end

#nai ⇒ Object (readonly)

Returns the value of attribute nai.



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# File 'lib/steem/type/amount.rb', line 6

def nai
  @nai
end

#precision ⇒ Object (readonly)

Returns the value of attribute precision.



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# File 'lib/steem/type/amount.rb', line 6

def precision
  @precision
end

Class Method Details

.to_bytes(amount) ⇒ Object 



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# File 'lib/steem/type/amount.rb', line 16

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

.to_h(amount) ⇒ Object 



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# File 'lib/steem/type/amount.rb', line 8

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

.to_s(amount) ⇒ Object 



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# File 'lib/steem/type/amount.rb', line 12

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

Instance Method Details

#to_a ⇒ Object 



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# File 'lib/steem/type/amount.rb', line 74

def to_a
  case @asset
  when 'STEEM' then [(@amount.to_f * 1000).to_i.to_s, 3, '@@000000021']
  when 'VESTS' then [(@amount.to_f * 1000000).to_i.to_s, 6, '@@000000037']
  when 'SBD' then [(@amount.to_f * 1000).to_i.to_s, 3, '@@000000013']
  end
end

#to_bytes ⇒ Object 



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# File 'lib/steem/type/amount.rb', line 65

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 



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# File 'lib/steem/type/amount.rb', line 82

def to_h
  case @asset
  when 'STEEM' then {
    amount: (@amount.to_f * 1000).to_i.to_s,
    precision: 3,
    nai: '@@000000021'
  }
  when 'VESTS' then {
    amount: (@amount.to_f * 1000000).to_i.to_s,
    precision: 6,
    nai: '@@000000037'
  }
  when 'SBD' then {
    amount: (@amount.to_f * 1000).to_i.to_s,
    precision: 3,
    nai: '@@000000013'
  }
  end
end

#to_s ⇒ Object 



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# File 'lib/steem/type/amount.rb', line 102

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