Method: Eth::Eip712#encode_data

Defined in:
lib/eth/eip712.rb

#encode_data(primary_type, data, types) ⇒ String

Recursively ABI-encodes all data and types according to EIP-712.

Parameters:

  • primary_type (String) —

    the primary type which we want to encode.

  • data (Array) —

    the data in the data structure we want to encode.

  • types (Array) —

    all existing types in the data structure.

Returns:

  • (String) —

    an ABI-encoded representation of the data and the types.



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# File 'lib/eth/eip712.rb', line 111

def encode_data(primary_type, data, types)

  # first data field is the type hash
  encoded_types = ["bytes32"]
  encoded_values = [hash_type(primary_type, types)]

  # adds field contents
  types[primary_type.to_sym].each do |field|
    value = data[field[:name].to_sym]
    type = field[:type]
    if type.end_with?("]")
      encoded_types.push type
      encoded_values.push encode_array(type, value, types)
    elsif type == "string" || type == "bytes" || !types[type.to_sym].nil?
      encoded_types.push "bytes32"
      encoded_values.push encode_value(type, value, types)
    else
      encoded_types.push type
      encoded_values.push value
    end
  end

  # all data is abi-encoded
  return Abi.encode encoded_types, encoded_values
end