Class: Binary_Puzzle_Solver::Cell

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

Constant Summary collapse

UNKNOWN = 
-1
ZERO = 
0
ONE = 
1
VALID_STATES = 
{UNKNOWN => true, ZERO => true, ONE => true}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(params = {}) ⇒ Cell

Returns a new instance of Cell.



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# File 'lib/binary_puzzle_solver/base.rb', line 62

def initialize (params={})
    @state = UNKNOWN
    if params.has_key?('state') then
        set_state(params[:state])
    end

    return
end

Instance Attribute Details

#state ⇒ Object (readonly)

Returns the value of attribute state.



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# File 'lib/binary_puzzle_solver/base.rb', line 60

def state
  @state
end

Instance Method Details

#get_char ⇒ Object 



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# File 'lib/binary_puzzle_solver/base.rb', line 83

def get_char()
    if state == ZERO
        return '0'
    elsif state == ONE
        return '1'
    else
        raise RuntimeError, "get_char() called on Unset state"
    end
end

#set_state(new_state) ⇒ Object 



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# File 'lib/binary_puzzle_solver/base.rb', line 71

def set_state (new_state)
    if (not VALID_STATES.has_key?(new_state))
        raise RuntimeError, "Invalid state " + new_state.to_s;
    end
    if (@state != UNKNOWN)
        raise RuntimeError, "Cannot reassign a value to the already set state."
    end
    @state = new_state

    return
end