help: find out end position of directive

[vektah]

help: find out end position of directive

[mathewbyrne]

I think Position is mostly intended for use in error messages. I would imagine that if you wanted to use gqlparser to achieve this you would parse the query, then programatically remove the expect directive from the AST before outputting back as a string. Is that not possible?

[robojones]

Thanks @mathewbyrne
I think it would be possible to use ast.Dump() to output the modified AST as a string.

gqlparser/ast/dumper.go

Line 12 in 05741cd

func Dump(i interface{}) string {

The problem with that solution is that it would remove the original formatting.
If the API I am testing returned an error with a position attached to it, it would be near to impossible for me to map it back to the original source file position.

The only way I can think of to get the correct original error location would be to parse the original and the generated query and then walk through both ASTs. This seems like an awkward solution.

Edit:
Just noticed that ast.Dump() is something completely different xD
Is there a method to convert the AST back to the normal string format or do I have to write my own?

[robojones]

I'm just going to do it that way now. Thanks again @mathewbyrne for the idea.