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valyala / fastjson

Fast JSON parser and validator for Go. No custom structs, no code generation, no reflection
MIT License
2.3k stars 138 forks source link

Provide more context in `Validate()` #102

Open grantstephens opened 7 months ago

grantstephens commented 7 months ago

It would be great to know the key of the value where the validation failed, i.e.

fastjson.Validate(`{"test":"bad
        json","good":"again"}`)

This gives 

cannot parse JSON: cannot parse object: cannot parse object value: string cannot contain control char 0x0A; unparsed tail: ",\"good\":\"again\"}"

For big blobs it would be really handy to know that the key at which is failed was test, so the error might be something like

cannot parse JSON: cannot parse object: cannot parse object (test) value: string cannot contain control char 0x0A; unparsed tail: ",\"good\":\"again\"}"