lojix/logic/src/main/com/thesett/aima/logic/fol/OpSymbol.java
public Fixity getFixity()
    {
        switch (associativity)
        {
        case FX:
        case FY:
            return Fixity.Pre;

        case XF:
        case YF:
            return Fixity.Post;

        case XFX:
        case XFY:
        case YFX:
            return Fixity.In;

        default:
            throw new IllegalStateException("Unknown associativity.");
        }
    }
public Fixity getFixity()
    {
        switch (associativity)
        {
        case FX:
        case FY:
            return Fixity.Pre;

        case XF:
        case YF:
            return Fixity.Post;

        case XFX:
        case XFY:
        case YFX:
            return Fixity.In;

        default:
            throw new IllegalStateException("Unknown associativity.");
        }
    }
Provides the symbols fixity, derived from its associativity.

@return The symbols fixity.