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Support optional generation #7

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merged 6 commits into from Apr 27, 2019
Merged

Support optional generation #7

merged 6 commits into from Apr 27, 2019

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@ice1000
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@ice1000 ice1000 commented Apr 19, 2019

Support generating only selected family of functions.

ice1000 added 3 commits Apr 19, 2019
Signed-off-by: ice1000 <ice1000kotlin@foxmail.com>
Signed-off-by: ice1000 <ice1000kotlin@foxmail.com>
Signed-off-by: ice1000 <ice1000kotlin@foxmail.com>
@ice1000 ice1000 requested a review from nrc Apr 19, 2019
Signed-off-by: ice1000 <ice1000kotlin@foxmail.com>
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@ice1000 ice1000 commented Apr 19, 2019

This is required by tikv/raft-rs#218

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@ice1000 ice1000 commented Apr 19, 2019

QAQ

pub enum GenOpt {
All,
NoImplMessage,
bitflags! {
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@hicqu hicqu Apr 23, 2019

I doubt that whether we really need so many options or not. I only like MSG, CLR, HAS, and TKE in person. NEW can be replaced with Default, and GET, SET and MUT are useless because we can touch the internal fields directly.

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@ice1000 ice1000 Apr 23, 2019

The process of eliminating wrapper usages should be step by step and this (relatively) fine grained config can help us do that.

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@hicqu hicqu Apr 24, 2019

Or can we merge these 3 as one option?

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@ice1000 ice1000 Apr 24, 2019

@hicqu I guess you've missed the point of this PR. What I was trying to do is to introduce a mechanism which can gradually reduce the wrapper functions. The ultimate goal is passing a GenOpt::empty() to the wrapper generator. Currently we're generating all of them so we can quickly launch prost support and my plan is to replace all usages of the generated wrappers with direct access. These options allow me to eliminate the generated wrappers step by step. That's all. 😉

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@hicqu hicqu Apr 24, 2019

So after all wrappers are removed, should we remove these options also?

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@ice1000 ice1000 Apr 24, 2019

We can! And I believe we're supposed to do so.

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@hicqu hicqu commented Apr 23, 2019

@nrc PTAL. kvproto is blocked on raft-rs, and raft-rs is blocked on here.

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@nrc nrc left a comment

Looks good, a few small comments inline

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Signed-off-by: ice1000 <ice1000kotlin@foxmail.com>
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@ice1000 ice1000 commented Apr 26, 2019

@nrc something else to consider:

We may need to provide an option that "generates getters that are not of primitive types".

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@ice1000 ice1000 commented Apr 26, 2019

Because for non-primitive types, they become Option<Bla>, where we're supposed to provide a getter that uses a default value for them.

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@ice1000 ice1000 commented Apr 26, 2019

I start doubting the idea of eliminating all getters. I'm here to propose another design of this library (unrelated to this PR):

  • Generate non-trivial getters (which unwrap_or_else for you)
  • Generate trivial getters with #[deprecated]
  • Provide options to eliminate deprecated stuffs

PTAL @nrc

Signed-off-by: ice1000 <ice1000kotlin@foxmail.com>
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nrc approved these changes Apr 27, 2019
@nrc nrc merged commit 643897c into master Apr 27, 2019
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@ice1000 ice1000 deleted the bitflags branch Apr 27, 2019
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3 participants