Eval片段作为字符串存储在DB中

Question

I'm moving part of my application from PHP to Go. I'm storing some pieces of code to eval in MySQL, for example: checkGeo('{geo:["DE","AU","NL"]}') && check0s('{os:["android"]}'). In PHP it is easy, just eval($stringToEval), but how can this be done in Go lang?

Answer 1

In an interpreted language like PHP, implementing eval is fairly simple. But Go is a compiled language. To implement eval in Go would require writing an interpreter for Go. This would not be impossible, but it would be a big job.

-Edit
You can have a look at https://godoc.org/bitbucket.org/binet/go-eval/pkg/eval which might do what you want. If it doesn't you could then maybe expand on it a bit. It isn't a full interpreter though.