Module: Eth::Abi::Packed::Encoder

Extended by:
Encoder
Included in:
Encoder
Defined in:
lib/eth/abi/packed/encoder.rb

Overview

Provides a utility module to assist encoding ABIs.

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.type(type, arg) ⇒ String

Encodes a specific value, either static or dynamic in non-standard packed encoding mode.

Parameters:

  • type (Eth::Abi::Type) —

    type to be encoded.

  • arg (String|Number) —

    value to be encoded.

Returns:

  • (String) —

    the packed encoded type.

Raises:

  • (EncodingError) —

    if value does not match type.

  • (ArgumentError) —

    if encoding fails for type.



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# File 'lib/eth/abi/packed/encoder.rb', line 38

def type(type, arg)
  case type
  when /^uint(\d+)$/
    uint(arg, $1.to_i / 8)
  when /^int(\d+)$/
    int(arg, $1.to_i / 8)
  when "bool"
    bool(arg)
  when /^ureal(\d+)x(\d+)$/, /^ufixed(\d+)x(\d+)$/
    ufixed(arg, $1.to_i / 8, $2.to_i)
  when /^real(\d+)x(\d+)$/, /^fixed(\d+)x(\d+)$/
    fixed(arg, $1.to_i / 8, $2.to_i)
  when "string"
    string(arg)
  when /^bytes(\d+)$/
    bytes(arg, $1.to_i)
  when "bytes"
    string(arg)
  when /^tuple\((.+)\)$/
    tuple($1.split(","), arg)
  when /^hash(\d+)$/
    hash(arg, $1.to_i / 8)
  when "address"
    address(arg)
  when /^(.+)\[\]$/
    array($1, arg)
  when /^(.+)\[(\d+)\]$/
    fixed_array($1, arg, $2.to_i)
  else
    raise EncodingError, "Unhandled type: #{type}"
  end
end

Instance Method Details

#type(type, arg) ⇒ String

Encodes a specific value, either static or dynamic in non-standard packed encoding mode.

Parameters:

  • type (Eth::Abi::Type) —

    type to be encoded.

  • arg (String|Number) —

    value to be encoded.

Returns:

  • (String) —

    the packed encoded type.

Raises:

  • (EncodingError) —

    if value does not match type.

  • (ArgumentError) —

    if encoding fails for type.



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# File 'lib/eth/abi/packed/encoder.rb', line 38

def type(type, arg)
  case type
  when /^uint(\d+)$/
    uint(arg, $1.to_i / 8)
  when /^int(\d+)$/
    int(arg, $1.to_i / 8)
  when "bool"
    bool(arg)
  when /^ureal(\d+)x(\d+)$/, /^ufixed(\d+)x(\d+)$/
    ufixed(arg, $1.to_i / 8, $2.to_i)
  when /^real(\d+)x(\d+)$/, /^fixed(\d+)x(\d+)$/
    fixed(arg, $1.to_i / 8, $2.to_i)
  when "string"
    string(arg)
  when /^bytes(\d+)$/
    bytes(arg, $1.to_i)
  when "bytes"
    string(arg)
  when /^tuple\((.+)\)$/
    tuple($1.split(","), arg)
  when /^hash(\d+)$/
    hash(arg, $1.to_i / 8)
  when "address"
    address(arg)
  when /^(.+)\[\]$/
    array($1, arg)
  when /^(.+)\[(\d+)\]$/
    fixed_array($1, arg, $2.to_i)
  else
    raise EncodingError, "Unhandled type: #{type}"
  end
end