ExpUnaria.java

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package plp.expressions1.expression;

public abstract class ExpUnaria implements Expressao {

        private Expressao exp;
        
        private String operador;
        
        public ExpUnaria(Expressao exp, String operador) {
                this.exp = exp;
                this.operador = operador;
        }

        public Expressao getExp() {
                return exp;
        }

        public String getOperador() {
                return operador;
        }

        public String toString() {
                StringBuffer sb = new StringBuffer();
                sb.append(operador);
                sb.append(' ');
                sb.append(exp.toString());
                return sb.toString();
        }

        public boolean checaTipo() {
                return getExp().checaTipo() && this.checaTipoElementoTerminal();
        }

        protected abstract boolean checaTipoElementoTerminal();
}

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