contract.rb in universa-3.11.4.3

- old
+ new

@@ -1,6 +1,7 @@
 require 'bigdecimal'
+require 'universa/lazy'
 
 module Universa
 
   # Adapter for com.icodici.crypto
   class KeyInfo < RemoteAdapter
@@ -144,28 +145,29 @@
     # Get binary representation. It is shorter than string representation but contain non-printable characters and
     # can cause problems if treated like a string. Use {#to_s} to get string representation instead.
     #
     # @return [String] binary string
     def bytes
-      get_digest
+      @bytes ||= get_digest
     end
 
+
     # Get string representation. It is, actually, base64 encoded string representation. Longer, but could easily
     # be transferred with text protocols.
     #
     # @return [String] string representation
     def to_s
-      Base64.encode64(get_digest).gsub(/\s/, '')
+      @str ||= Base64.encode64(get_digest).gsub(/\s/, '')
     end
 
     # Converts to URL-safe varianot of base64, as RFC 3548 suggests:
     #     the 63:nd / character with the underscore _
     #     the 62:nd + character with the minus -
     #
     # Could be decoded safely back with {HashId.from_string} but not (most likely) with JAVA API itself
     # @return [String] RFC3548 modified base64
     def to_url_safe_string
-      Base64.encode64(get_digest).gsub(/\s/, '').gsub('/', '_').gsub('+', '-')
+      @urlsafe_str ||= Base64.encode64(get_digest).gsub(/\s/, '').gsub('/', '_').gsub('+', '-')
     end
 
     # To use it as a hash key_address.
     # @return hash calculated over the digest bytes
     def hash
\ No newline at end of file