Euan Kemp 2e6bec7345 [Rust] Split out request logic, implement form parameters (#528)
* [Rust] Move request logic into standalone file

This reduces the number of variables which are used in the generated
operations, thus fixing #512.

This also fixed a TODO related to URI parsing errors.
Other than that, it is meant to be functionally identical.

* [Rust] Add support for non-file form params

Up until now, they just weren't there at all

* [Rust] Use more rustic terms in example
2018-07-23 23:10:53 +08:00
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