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Macros to use path instead of ident #1474

Merged
merged 34 commits into from
Oct 14, 2023
Merged

Macros to use path instead of ident #1474

merged 34 commits into from
Oct 14, 2023

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juangirini
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@juangirini juangirini commented Sep 8, 2023

Relates to #173
As part of the efforts towards making the FRAME umbrella crate in #1337, we need macros to work without frame-support, frame-system and codec, and type-info being in scope.
This PR leaves generate_crate_access_2018 ready to check for the frame crate once this one is ready and use its reexports instead of the local dependencies.

@juangirini juangirini changed the title Pre FRAME crate: macros to use path instead of ident Macros to use path instead of ident Sep 11, 2023
@@ -762,7 +767,7 @@ fn expand_benchmark(
Expr::Cast(t) => {
let ty = t.ty.clone();
quote! {
<<T as frame_system::Config>::RuntimeOrigin as From<#ty>>::from(#origin);
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all of this seem to have been hardcoded 🙈 well, not like anything broke because of it, but indeed not a good practice.

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unless if was intentional? but I can't see a reason.

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I can't see a reason either, and we need this unhardcoded moving forward to work with the frame umbrella crate

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Def. on the right path, just need more tests.

@@ -762,7 +767,7 @@ fn expand_benchmark(
Expr::Cast(t) => {
let ty = t.ty.clone();
quote! {
<<T as frame_system::Config>::RuntimeOrigin as From<#ty>>::from(#origin);
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unless if was intentional? but I can't see a reason.

@@ -783,7 +783,7 @@ fn decl_static_assertions(
quote! {
#scrate::__private::tt_call! {
macro = [{ #path::tt_error_token }]
frame_support = [{ #scrate }]
your_tt_return = [{ #scrate::__private::tt_return }]
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I recall this was one of the BIG BIG fixes in this PR when I was working on it.

Try this for yourself: if you are familiar with the tt_call pattern a bit, instead of passing in the your_tt_return, pass frame_support as it was in the past to the caller. Then have the caller call #frame_support::__private::tt_return instead of plain your_tt_return. These two seem equivalent, but the former never worked.

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But, hearing what I just said, in the scope of this PR, it is pretty unclear why we are doing this. I recall my working example was minimal-runtime. Would be good if you also bring back some sort of example here to demonstrate that this change is actually needed. Ideally, this example will just a test in frame-support and not the frame crate.

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These two seem equivalent, but the former never worked.

Yes, that's what looks at a glance... did you find out what's the reason?

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Would be good if you also bring back some sort of example here to demonstrate that this change is actually needed

@kianenigma Probably the best example is by using the frame-crate itself, which makes me reconsider if bringing this change here was a good idea and instead bring it in the 'main' frame umbrella PR. WDYT?

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I highly suspect that it didn't work before because the "receiver" didn't expect to see any "arguments" named your_tt_return and have been coded to only recognize frame_support as an "argument". If you take a look at tt_default_parts.rs, you'll see what I mean.

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If my memory is good, the former didn't work because there was another error when giving a path instead of a single ident:
Like code was something like this:

				frame_support = [{ $($frame_support:ident)::* }]
			} => {
				$($frame_support::)*__private::tt_return! {

but it should have been like this for path to work

				frame_support = [{ $($frame_support:ident)::* }]
			} => {
// see the semicolon is after the parentheses here
				$($frame_support)::*__private::tt_return! {

but when you implemented with your_tt_return you fixed this kind of error.

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macro_magic might make this easier to reason about perhaps 😇

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@sam0x17 sam0x17 Oct 9, 2023

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the specific workaround for passing paths to these btw is to do an interpolation of idents segmented by :: and with an optional leading ::. For some reason that just works positionally where path doesn't,

see: https://github.com/sam0x17/macro_magic/blob/main/core/src/lib.rs#L511

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bot fmt

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command-bot bot commented Sep 15, 2023

@juangirini https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/3709127 was started for your command "$PIPELINE_SCRIPTS_DIR/commands/fmt/fmt.sh". Check out https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/pipelines?page=1&scope=all&username=group_605_bot to know what else is being executed currently.

Comment bot cancel 6-74c39310-e640-4ebd-8566-7f58d7263896 to cancel this command or bot cancel to cancel all commands in this pull request.

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command-bot bot commented Sep 15, 2023

@juangirini Command "$PIPELINE_SCRIPTS_DIR/commands/fmt/fmt.sh" has finished. Result: https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/3709127 has finished. If any artifacts were generated, you can download them from https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/3709127/artifacts/download.

@juangirini juangirini marked this pull request as ready for review September 15, 2023 11:20
@juangirini juangirini requested review from a team and removed request for a team September 15, 2023 11:20
@kianenigma kianenigma merged commit 7c87d61 into master Oct 14, 2023
10 checks passed
@kianenigma kianenigma deleted the jg/frame-crate-path branch October 14, 2023 06:26
ordian added a commit that referenced this pull request Oct 16, 2023
* master: (54 commits)
  Publish `xcm-emulator` crate (#1881)
  Adding migrations to clean Rococo Gov 1 storage & reserved funds (#1849)
  Arkworks Elliptic Curve utils overhaul (#1870)
  Fix typos (#1878)
  fix: GoAhead signal only set when runtime upgrade is enacted from parachain side (#1176)
  Refactor staking ledger (#1484)
  Paired-key Crypto Scheme (#1705)
  Include polkadot version in artifact path (#1828)
  add link to rfc-0001 in broker README (#1862)
  Discard `Executor` (#1855)
  Macros to use path instead of ident (#1474)
  Remove clippy clone-double-ref lint noise (#1860)
  Refactor alliance benchmarks to v2 (#1868)
  Check executor params coherence (#1774)
  frame: use derive-impl for beefy and mmr pallets (#1867)
  sc-consensus-beefy: improve gossip logic (#1852)
  Adds instance support for composite enums (#1857)
  Fix links to implementers' guide (#1865)
  Disabled validators runtime API (#1257)
  Adding `try_state` hook for `Treasury` pallet (#1820)
  ...
ordian added a commit that referenced this pull request Oct 16, 2023
…ribution

* tsv-disabling-backing: (54 commits)
  Publish `xcm-emulator` crate (#1881)
  Adding migrations to clean Rococo Gov 1 storage & reserved funds (#1849)
  Arkworks Elliptic Curve utils overhaul (#1870)
  Fix typos (#1878)
  fix: GoAhead signal only set when runtime upgrade is enacted from parachain side (#1176)
  Refactor staking ledger (#1484)
  Paired-key Crypto Scheme (#1705)
  Include polkadot version in artifact path (#1828)
  add link to rfc-0001 in broker README (#1862)
  Discard `Executor` (#1855)
  Macros to use path instead of ident (#1474)
  Remove clippy clone-double-ref lint noise (#1860)
  Refactor alliance benchmarks to v2 (#1868)
  Check executor params coherence (#1774)
  frame: use derive-impl for beefy and mmr pallets (#1867)
  sc-consensus-beefy: improve gossip logic (#1852)
  Adds instance support for composite enums (#1857)
  Fix links to implementers' guide (#1865)
  Disabled validators runtime API (#1257)
  Adding `try_state` hook for `Treasury` pallet (#1820)
  ...
bgallois pushed a commit to duniter/duniter-polkadot-sdk that referenced this pull request Mar 25, 2024
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7 participants