static IExpression GetMaleExpression() { IExpression robert = new TerminalExpression("Robert"); IExpression john = new TerminalExpression("John"); return(new OrExpression(robert, john)); }
static IExpression GetMarriedWomanExpression() { IExpression julie = new TerminalExpression("Julie"); IExpression married = new TerminalExpression("Married"); return(new AndExpression(julie, married)); }