if p, ok := b.Op.(hasPrec); ok {
		return p.prec()
	}
	return precDefault
}

// Trinary is the ?: trinary operation in an expression.
type Trinary struct {
	Op     AST
	First  AST
	Second AST
	Third  AST
}

func (t *Trinary) print(ps *printState) {
	if isDesignatedInitializer(t) {
		ps.writeByte('[')
		ps.print(t.First)
		ps.writeString(" ... ")