rbrack := p.expect(token.RBRACK)

	if isSlice {
		return &ast.SliceExpr{x, lbrack, low, high, rbrack}
	}
	return &ast.IndexExpr{x, lbrack, low, rbrack}
}

func (p *parser) parseCallOrConversion(fun ast.Expr) *ast.CallExpr {
	if p.trace {
		defer un(trace(p, "CallOrConversion"))
	}

	lparen := p.expect(token.LPAREN)
	p.exprLev++
	var list []ast.Expr
	var ellipsis token.Pos

		return &ast.IndexExpr{X: x, Lbrack: lbrack, Index: index[0], Rbrack: rbrack}
	}

	// instance expression
	return typeparams.PackIndexExpr(x, lbrack, args, rbrack)
}

func (p *parser) parseCallOrConversion(fun ast.Expr) *ast.CallExpr {
	if p.trace {
		defer un(trace(p, "CallOrConversion"))
	}

	lparen := p.expect(token.LPAREN)
	p.exprLev++
	var list []ast.Expr
	var ellipsis token.Pos