Class: RubyFunge::RubyFunge

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

Constant Summary collapse

DIRS = 
[:left, :right, :up, :down]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ RubyFunge

Returns a new instance of RubyFunge.



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# File 'lib/rubyfunge/rubyfunge.rb', line 10

def initialize()
  @x, @y    = 0, 0
  @dir      = :right
  @code     = []
  @stack    = []
  @str_mode = false
  @skip     = false

  @synt   = {
              '+'=>:op_add, '-'=>:op_sub, '*'=>:op_mul, '/'=>:op_div, '%'=>:op_mod,
              '!'=>:op_not, '`'=>:op_gt,
              '>'=>:op_right, '<'=>:op_left, '^'=>:op_up, 'v'=>:op_down,
              '?'=>:op_rnd,
              '_'=>:op_lr, '|'=>:op_ud,
              '"'=>:op_str,
              ':'=>:op_dup, '\\'=>:op_swp,
              '$'=>:op_pop, '.'=>:op_outi, ','=>:op_outc,
              '#'=>:op_skp, 'p'=>:op_put, 'g'=>:op_get,
              '&'=>:op_aski, '~'=>:op_askc
            }
end

Instance Attribute Details

#code ⇒ Object (readonly)

Returns the value of attribute code.



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# File 'lib/rubyfunge/rubyfunge.rb', line 6

def code
  @code
end

#stack ⇒ Object (readonly)

Returns the value of attribute stack.



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# File 'lib/rubyfunge/rubyfunge.rb', line 5

def stack
  @stack
end

#x ⇒ Object (readonly)

Returns the value of attribute x.



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# File 'lib/rubyfunge/rubyfunge.rb', line 3

def x
  @x
end

#y ⇒ Object (readonly)

Returns the value of attribute y.



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# File 'lib/rubyfunge/rubyfunge.rb', line 4

def y
  @y
end

Instance Method Details

#run(code) ⇒ Object 



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# File 'lib/rubyfunge/rubyfunge.rb', line 40

def run(code)
  i = 0
  @code = []
  code.each_line {|l|
    @code[i] = l
    i += 1
  }
  @x, @y = 0,0
  while (@code[@y][@x].chr != '@')
    op = @code[@y][@x].chr
    if (@str_mode)
      if (op == '"')
        op_str
      else
        push op[0]
      end
    elsif (op=='#')
      @skip = true
    elsif (op=~/\d/ && !@skip)
      self.send :push, op.to_i
      @skip = false
    else
      self.send @synt[op] if @synt.include?(op) && !@skip
      @skip = false
    end
    case @dir
      when :right
        @x += 1
        @x = 0 if @x > @code[@y].length - 1
      when :left
        @x -= 1
        @x = @code[@y].length - 1 if @x < 0
      when :up
        @y -= 1
        @y = @code.length - 1 if @y < 0
      when :down
        @y += 1
        @y = 0 if @y > @code.length - 1
    end
  end
end

#run_file(filename) ⇒ Object 



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# File 'lib/rubyfunge/rubyfunge.rb', line 32

def run_file(filename)
  if (!File.exist?(filename))
    raise "File does not exist"
  else
    run(File.open(filename).read())
  end
end