package hangmanModel;

class WordChar
{
    private char _value;
    private ACharState _state = Hidden.Singleton;

    /**
     * Initialized to c and the hidden state.
     */
    WordChar(char c)
    {
	_value = c;
    }

    /**
     * @return the string representation of this character
     */
    final public String toString()
    {
	return _state.toString(_value, this);
    }

    /**
     * @param c the input character to be compared with.
     * @param b whether there is a match earlier in the word.
     * @return whether there is a match earlier in the word, or with this character.
     * Side effect: If this character matches, makes it Visible.
     */
    final boolean compare(char c, boolean b)
    {
	return _state.compare(c, b, _value, this);
    }

    /**
     * @return whether all characters in the word are Visible.
     */
    final boolean isVisible()
    {
	return _state.isVisible(this);
    }

    /**
     * Sets this WordChar to a given state.
     * @param state a new state.
     */
    final void setState(ACharState state)
    {
	_state = state;
    }
}