Class: FAM::Machine::RAM

Inherits:
Object show all
Defined in:
lib/fam/machine/memory.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(size) ⇒ RAM

Returns a new instance of RAM.



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# File 'lib/fam/machine/memory.rb', line 14

def initialize size
  alloc = 0
  case size
  when Numeric
    alloc = size
  when String
    suffix = size.upcase[/[A-Z]+/] || ''
    suffix = 'kB' if suffix == 'KB'
    unless suffix.empty?
      alloc = size[/[0-9]+/].to_i * SIZES[suffix.to_sym]
    else
      alloc = size.to_i
    end
  else
    abort 'ERROR: `size` argument must be a string or numeric!'.red
  end
  @array = Array.new(alloc, NULL)
end

Instance Attribute Details

#array ⇒ Object

Returns the value of attribute array.



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# File 'lib/fam/machine/memory.rb', line 12

def array
  @array
end

Instance Method Details

#[](i) ⇒ Object 



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# File 'lib/fam/machine/memory.rb', line 33

def [](i)
  @array[i]
end

#[]=(i, value) ⇒ Object 



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# File 'lib/fam/machine/memory.rb', line 37

def []=(i, value)
  abort 'ERROR: Only integers can be stored in memory!' unless i.class == Integer
  @array[i] = value
end

#to_a ⇒ Object 



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# File 'lib/fam/machine/memory.rb', line 42

def to_a
  @array
end

#to_s ⇒ Object 



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# File 'lib/fam/machine/memory.rb', line 46

def to_s
  result = String.new
  width = %x{ tput cols }.to_i
  i = j = 0
  loop do
    break if j >= @array.size
    line = String.new
    i = j
    while line.size < width && j <= @array.size
      line << "#{@array[j].to_s.rjust 4, '0'}XXXXX" # `X` padding
      j += 1
    end
    result << "| #{@array[i..j].map {|e| e.to_s.rjust 4, '0'}.join ' | '} |\n"
  end
  result
end