[QUESTION] - Is it possible to get information for function arguments?

[sujit-baniya]

I've a requirement to get information about a function and it's arguments.

For e.g. age(customer.dob, 'Male')

Here I wanted to identify above something like

{
    "func_o": "age",
    "arguments": [
    {"argument": "customer.dob","type": "variable"},
    {"argument": "'Male'","type": "constant"}
]
}

[antonmedv]

Yes. It is totally possible. Just use the visitor https://expr.medv.io/docs/Visitor-and-Patch

[sujit-baniya]

@antonmedv Thanks. I will check it. Is it fine to identify a.b (nested variable) as constant?

[antonmedv]

Not sure what you asking about.

[sujit-baniya]

I meant, When I try to Parse a.b or any variables (identifiers), it is parsed as Constants instead of Variables

	v, err := expr.Parse("a.b")
	if err != nil {
		panic(err)
	}
	fmt.Println(v.Variables, v.Constants)

IMO,

• 'a.b' - as constant (currently is fine)
• a.b - as variable (ISSUE)
• true - Is neither variable nor constant (ISSUE) it should have been a constant

[antonmedv]

*vm.Program "constants" is not what you think. And "variables" is not vars. It is internal VM structures. I guess, I need to rename those.