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Support for cfg attributes in host functions definitions
#14189
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davxy
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bkchr
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May 22, 2023
|
Required by #13974 |
michalkucharczyk
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May 23, 2023
| method.sig.ident, | ||
| ); | ||
| let return_value = &method.sig.output; | ||
| let cfg_attrs = method.attrs.iter().filter(|a| a.path().is_ident("cfg")); |
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nit: this filtering is repeated multiple times, maybe it is worth putting it to some shared util?
koute
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May 23, 2023
primitives/runtime-interface/proc-macro/src/runtime_interface/host_function_interface.rs
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Please add it to the crate docs as well (or only the crate docs), but never the README exclusively. Most of these readmes were generated from the crate docs. |
Co-authored-by: Koute <[email protected]>
Ank4n
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Jul 8, 2023
* Support cfg attribute in host functions definitions * Added test to check feature gated methods are not included * Versioned conditional compiled host function are forbidden * Improve runtime-interface macro docs * Fix doc * Apply review suggestion Co-authored-by: Koute <[email protected]> * Better error message * Rust fmt * More refinements to the docs --------- Co-authored-by: Koute <[email protected]>
nathanwhit
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Jul 19, 2023
…h#14189) * Support cfg attribute in host functions definitions * Added test to check feature gated methods are not included * Versioned conditional compiled host function are forbidden * Improve runtime-interface macro docs * Fix doc * Apply review suggestion Co-authored-by: Koute <[email protected]> * Better error message * Rust fmt * More refinements to the docs --------- Co-authored-by: Koute <[email protected]>
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As per title...
If I'm not terribly wrong, before this PR was not possible to define a host function gated by some
#[cfg(feature = ...)]. A similar technique has been used byframe.Usage scenario: we require to early integrate and experiment with an host function that is still in "beta" phase as this one:
https://github.com/davxy/substrate/blob/5d2e2bbf17bb7f375d6d24bfe696be2c6e54aa2a/primitives/io/src/lib.rs#L1146-L1159
I'm not a rust macro wizard 🧙 so please carefully check