Class: Storage

Inherits:
Object
  • Object
show all
Defined in:
lib/universum/storage.rb

Overview

keep track of contract state

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Storage

Returns a new instance of Storage.



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# File 'lib/universum/storage.rb', line 8

def initialize
  @data = {}
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(m, *args, &block) ⇒ Object

todo/future: in the future auto-add getter/setter methods on setup

do NOT use method_missing!!!



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# File 'lib/universum/storage.rb', line 27

def method_missing( m, *args, &block )
  puts "Storage#method_missing( #{m.inspect}), #{args.inspect} )"

  ## todo: add support ? for bool
  ##    elsif m.end_with?('?') && args.empty?
  ##      @storage[m]

  if m =~/\A[a-z][a-zA-Z0-9_]*=\z/ && args.size == 1
    key   = m[0...-1].to_sym    ## note: cut-off trailing equal sign (=), use EXCLUSIVE (...) range and NOT INCLUSIVE (..)
    value = args[0]
    puts "  SSTORE( #{key.inspect}, #{value.inspect} )"
    @data[key] = value
  elsif m =~/\A[a-z][a-zA-Z0-9_]*\z/ && args.empty?   ## todo/fix: check for valid identifier
    key = m
    puts "  SLOAD( #{key.inspect} )"
    @data[key]
  else
    super
  end
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/universum/storage.rb', line 12

def [](key)
  puts "  SLOAD( #{key.inspect} )"
  @data[key]
end

#[]=(key, value) ⇒ Object 



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# File 'lib/universum/storage.rb', line 17

def []=(key,value)
  puts "  SSTORE( #{key.inspect}, #{value.inspect} )"
  @data[key] = value
end