How to create a language with nested parameter support?

[pmalekn]

I need to create a language with some concrete set of rules (to obtain an ES query). I already have something like:

func getLanguage() gval.Language {
	return gval.NewLanguage(
		gval.InfixTextOperator("==", eqStringOp),
		gval.InfixOperator("&&", andOp),
		gval.InfixOperator("||", orOp),
		gval.Base(),
	)
}

and I evaluate it with:

var paramMap = map[string]string{
	"device":          "device_id",
	"type":            "type",
	"label.id":        "label.id",
	"label.value":     "label.value",
}

result, err := lang.Evaluate(`label.id = "my-id"`, paramMap)

How can I add nested parameter support (as it is support when calling gval.Evaluate())?

[generikvault]

use nested maps

var paramMap = map[string]string{
	"device":          "device_id",
	"type":            "type",
	"label":        map[string]string{
		"id":        "label.id",
		"value":     "label.value",
	},
}

[pmalekn]

Thanks! I somehow also figured it out after some digging!