String format query with no operator using %#v or %#+v panics

[wader]

Hi, was digging around trying to learn more about the gojq query AST type and noticed panics for some queries when I tried to print them using log.Printf("var: %#+v\n", var) (the lv snippet in vscode). The panic happens because the expression has no operator and panics in func (Operator) String().

Example:

package main

import (
	"log"

	"github.com/itchyny/gojq"
)

func main() {
	q, err := gojq.Parse("a")
	if err != nil {
		panic(err)
	}
	log.Printf("q: %#+v\n", q)
}

Would it make sense that queries that parses successfully should be formattable like this? but I understand the panic make sense to have also. Maybe a new operator enum OpNone etc?

[itchyny]

The issue is about func (Operator) GoString(), not func (Operator) String(). Adding new operator for zero value is not a good solution as a workaround for debugging purpose.

[wader]

Ah yes sorry wrong method. I was thinking a non-zero OpNone that the parser assigns when parsing.