elt := p.parseType()
	return &ast.ArrayType{Lbrack: lbrack, Len: len, Elt: elt}
}

func (p *parser) parseArrayFieldOrTypeInstance(x *ast.Ident) (*ast.Ident, ast.Expr) {
	if p.trace {
		defer un(trace(p, "ArrayFieldOrTypeInstance"))
	}

	lbrack := p.expect(token.LBRACK)
	trailingComma := token.NoPos // if valid, the position of a trailing comma preceding the ']'
	var args []ast.Expr
	if p.tok != token.RBRACK {
		p.exprLev++