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Fix cargo check for pallet-contracts-proc-macro #12706

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Nov 16, 2022
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Fix cargo check for pallet-contracts-proc-macro #12706

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9490697
fix `cargo check` for pallet-contracts-proc-macro
joao-paulo-parity Nov 15, 2022
2bf9534
add test for cargo-check of pallet-contracts-proc-macro
joao-paulo-parity Nov 15, 2022
26013e7
remove cargo-check-contracts-proc-macro
joao-paulo-parity Nov 15, 2022
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2 changes: 1 addition & 1 deletion frame/contracts/proc-macro/Cargo.toml
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Expand Up @@ -17,7 +17,7 @@ proc-macro = true
[dependencies]
proc-macro2 = "1"
quote = "1"
syn = "1.0.98"
syn = { version = "1.0.98", features = ["full"] }
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Do we really need full?

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Yes. By the error message we can note that cargo is failing to find lots of symbols which are only available if the full feature is enabled. See https://github.com/dtolnay/syn/blob/3424444c7f09a38b97bc2abcd086f7d48732fb51/src/lib.rs#L312-L454. I tried combining a few other features to no avail.

error[E0433]: failed to resolve: could not find `FnArg` in `syn`
   --> frame/contracts/proc-macro/src/lib.rs:286:9
    |
286 |             syn::FnArg::Typed(pt) => Some(&pt.ty),
    |                  ^^^^^ could not find `FnArg` in `syn`

error[E0433]: failed to resolve: could not find `Item` in `syn`
   --> frame/contracts/proc-macro/src/lib.rs:315:9
    |
315 |             syn::Item::Fn(i_fn) => Some(i_fn.clone()),
    |                  ^^^^ could not find `Item` in `syn`

error[E0433]: failed to resolve: could not find `FnArg` in `syn`
   --> frame/contracts/proc-macro/src/lib.rs:406:10
    |
406 |                 syn::FnArg::Typed(pt) => {
    |                      ^^^^^ could not find `FnArg` in `syn`

error[E0433]: failed to resolve: could not find `Pat` in `syn`
   --> frame/contracts/proc-macro/src/lib.rs:407:18
    |
407 |                     if let syn::Pat::Ident(ident) = &*pt.pat {
    |                                 ^^^ could not find `Pat` in `syn`

error[E0412]: cannot find type `ItemFn` in crate `syn`
   --> frame/contracts/proc-macro/src/lib.rs:158:13
    |
158 |     item: syn::ItemFn,
    |                ^^^^^^ not found in `syn`

error[E0412]: cannot find type `ItemFn` in crate `syn`
   --> frame/contracts/proc-macro/src/lib.rs:177:29
    |
177 |     pub fn try_from(item: syn::ItemFn) -> syn::Result<Self> {
    |                                ^^^^^^ not found in `syn`

error[E0412]: cannot find type `ItemMod` in crate `syn`
   --> frame/contracts/proc-macro/src/lib.rs:305:29
    |
305 |     pub fn try_from(item: syn::ItemMod) -> syn::Result<Self> {
    |                                ^^^^^^^ not found in `syn`

error[E0412]: cannot find type `Item` in crate `syn`
   --> frame/contracts/proc-macro/src/lib.rs:314:30
    |
314 |         let extract_fn = |i: &syn::Item| match i {
    |                                    ^^^^ not found in `syn`

error[E0412]: cannot find type `ItemMod` in crate `syn`
   --> frame/contracts/proc-macro/src/lib.rs:578:50
    |
578 |     let item = syn::parse_macro_input!(item as syn::ItemMod);
    |                                                     ^^^^^^^ not found in `syn`

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👍


[dev-dependencies]

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