Class: IcAgent::Candid::PrincipalClass

Inherits:
PrimitiveType show all
Defined in:
lib/ic_agent/candid.rb

Overview

Represents an IDL principal reference

Instance Method Summary collapse

Methods inherited from PrimitiveType

#_build_type_table_impl, #check_type

Methods inherited from BaseType

_build_type_table_impl, #build_type_table, check_type, covariant, decode_value, #display, encode_type, encode_value

Constructor Details

#initialize ⇒ PrincipalClass

Returns a new instance of PrincipalClass.



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# File 'lib/ic_agent/candid.rb', line 621

def initialize
  super
end

Instance Method Details

#covariant(x) ⇒ Object 



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# File 'lib/ic_agent/candid.rb', line 625

def covariant(x)
  if x.is_a?(String)
    p = IcAgent::Principal.from_str(x)
  elsif x.is_a?(Array)
    p = IcAgent::Principal.from_hex(x.pack('C*').unpack1('H*'))
  else
    raise ValueError, 'only support string or bytes format'
  end
  p.is_a?(IcAgent::Principal)
end

#decode_value(b, t) ⇒ Object 



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# File 'lib/ic_agent/candid.rb', line 653

def decode_value(b, t)
  check_type(t)
  res = IcAgent::Candid.safe_read_byte(b)
  if res != '01'
    raise ValueError, 'Cannot decode principal'
  end

  length = IcAgent::Candid.leb128u_decode(b)
  IcAgent::Principal.from_hex(IcAgent::Candid.safe_read(b, length)).to_str
end

#encode_type(type_table = nil) ⇒ Object 



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# File 'lib/ic_agent/candid.rb', line 649

def encode_type(type_table = nil)
  LEB128.encode_signed(TypeIds::Principal).string
end

#encode_value(val) ⇒ Object 



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# File 'lib/ic_agent/candid.rb', line 636

def encode_value(val)
  tag = 1.chr(Encoding::ASCII_8BIT)
  if val.is_a?(String)
    buf = IcAgent::Principal.from_str(val).bytes
  elsif val.is_a?(Array)
    buf = val.pack('C*')
  else
    raise ValueError, 'Principal should be string or bytes.'
  end
  l = LEB128.encode_signed(buf.size).string
  tag + l + buf
end

#id ⇒ Object 



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# File 'lib/ic_agent/candid.rb', line 668

def id
  TypeIds::Principal
end

#name ⇒ Object 



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# File 'lib/ic_agent/candid.rb', line 664

def name
  'principal'
end