Class: Trx::Abi::Function

Inherits:
Object
  • Object
show all
Defined in:
lib/trx/abi/function.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data) ⇒ Function

Returns a new instance of Function.



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# File 'lib/trx/abi/function.rb', line 7

def initialize(data)
  @name = data["name"]
  @constant = data["constant"]
  @inputs = data.fetch("inputs", []).map do |input|
    FunctionInput.new(input)
  end
  @outputs = data.fetch("outputs", []).map do |output|
    FunctionOutput.new(output)
  end
  @function_string = self.class.calc_signature(@name, @inputs)
  @signature = self.class.calc_id(@function_string)
end

Instance Attribute Details

#constant ⇒ Object

Returns the value of attribute constant.



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# File 'lib/trx/abi/function.rb', line 5

def constant
  @constant
end

#function_string ⇒ Object

Returns the value of attribute function_string.



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# File 'lib/trx/abi/function.rb', line 5

def function_string
  @function_string
end

#inputs ⇒ Object

Returns the value of attribute inputs.



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# File 'lib/trx/abi/function.rb', line 5

def inputs
  @inputs
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/trx/abi/function.rb', line 5

def name
  @name
end

#outputs ⇒ Object

Returns the value of attribute outputs.



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# File 'lib/trx/abi/function.rb', line 5

def outputs
  @outputs
end

#signature ⇒ Object

Returns the value of attribute signature.



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# File 'lib/trx/abi/function.rb', line 5

def signature
  @signature
end

Class Method Details

.calc_id(signature) ⇒ Object 



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# File 'lib/trx/abi/function.rb', line 32

def self.calc_id(signature)
  Digest::Keccak.hexdigest(signature, 256)[0..7]
end

.calc_signature(name, inputs) ⇒ Object 



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# File 'lib/trx/abi/function.rb', line 28

def self.calc_signature(name, inputs)
  "#{name}(#{inputs.map {|x| self.to_canonical_type(x.type) }.join(",")})"
end

.to_canonical_type(type) ⇒ Object 



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# File 'lib/trx/abi/function.rb', line 20

def self.to_canonical_type(type)
  type
  .gsub(/(int)(\z|\D)/, '\1256\2')
  .gsub(/(uint)(\z|\D)/, '\1256\2')
  .gsub(/(fixed)(\z|\D)/, '\1128x128\2')
  .gsub(/(ufixed)(\z|\D)/, '\1128x128\2')
end