传递要在go应用程序中求值的表达式？

Question

I have a go command line application, that has a search function to scan a list of objects (structs). I want to be able to invoke that search function, i.e. instead of just

mycmd search bob

Perhaps I can do:

mycmd search 'o.Name() == "bob"'
mycmd search 'len(o.PhoneNumbers()) > 1'
mycmd search 'strings.Index(o.Name(), "bob") >= 0'

Is it possible to process an expression like this, within a loop in your go code? If this is not possible, what is the simplest and most standard way to approach this in GO, without creating my own expression language/evaluator?

(I can see we have things like go-v8 and golua, however I'm not sure if this is the right way to think about it?)

NOTE: its a personal script, security concerns are out of scope.

Answer 1

Maybe you can use the text.template package for the evaluation of your input.
And later parse the output of it for the result of the entered expression.

This is was a few Go build tools do. For example docker inspect uses this for formatting its output.