Class: LedgerLite::Ledger

Inherits:
Base
  • Object
show all
Defined in:
lib/ledger-lite/base.rb

Instance Attribute Summary

Attributes inherited from Base

#addr

Instance Method Summary collapse

Methods inherited from Base

config, configure, #initialize, #unpack_transactions, #write

Constructor Details

This class inherits a constructor from LedgerLite::Base

Instance Method Details

#send(from, to, amount) ⇒ Object Also known as: transfer

apply/do single transaction - send payment - do transfer

- find a different name - why? why not?



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# File 'lib/ledger-lite/base.rb', line 169

def send( from, to, amount )

  if sufficient?( from, amount )
    if self.class.config.coinbase?( from )
      # note: coinbase has unlimited funds!! ("virtual" built-in money printing address)
    else
       @addr[ from ] -= amount
    end
    @addr[ to ] ||= 0
    @addr[ to ] += amount
  end
end

#sufficient?(addr, amount) ⇒ Boolean Also known as: sufficient_funds?

find a better name - why? why not?

e.g. use can? funds? sufficient? has_funds?

Returns:

  • (Boolean) 


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# File 'lib/ledger-lite/base.rb', line 156

def sufficient?( addr, amount )
  return true   if self.class.config.coinbase?( addr )    ## note: coinbase has unlimited funds!!!

  @addr.has_key?( addr )     &&
  @addr[addr] - amount >= 0
end

#unpack(tx) ⇒ Object 



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# File 'lib/ledger-lite/base.rb', line 134

def unpack( tx )
  ## "unpack" from, to, amount values

  puts "unpack:"
  pp tx

  if tx.is_a?( Hash )   ## support hashes
    from   = tx[:from]
    to     = tx[:to]
    amount = tx[:amount]
  else   ## assume it's a transaction (tx) struct/class
    from   = tx.from
    to     = tx.to
    amount = tx.amount
  end
  [from,to,amount]
end