transfer-hook: Move interface and example into subfolders (#5640)

Author: joncinque

.github/workflows/pull-request-token.yml

@@ -146,7 +146,7 @@ jobs:
           echo "$HOME/.local/share/solana/install/active_release/bin" >> $GITHUB_PATH
 
       - name: Build and test transfer hook example
-        run: ./ci/cargo-test-sbf.sh token/transfer-hook-example
+        run: ./ci/cargo-test-sbf.sh token/transfer-hook/example
 
       - name: Upload program
         uses: actions/upload-artifact@v2

Cargo.toml

@@ -57,8 +57,8 @@ members = [
   "token/program",
   "token/program-2022",
   "token/program-2022-test",
-  "token/transfer-hook-example",
-  "token/transfer-hook-interface",
+  "token/transfer-hook/example",
+  "token/transfer-hook/interface",
   "token/client",
   "utils/cgen",
   "utils/test-client",

docs/src/token-2022/extensions.mdx

@@ -1346,22 +1346,22 @@ explained in detail in many of the linked `README` files below under
 #### Resources
 
 The interface description and structs exist at
-[spl-transfer-hook-interface](https://github.com/solana-labs/solana-program-library/tree/master/token/transfer-hook-interface),
+[spl-transfer-hook-interface](https://github.com/solana-labs/solana-program-library/tree/master/token/transfer-hook/interface),
 along with a sample minimal program implementation. You can find detailed
 instructions on how to implement this interface for an on-chain program or
 interact with a program that implements transfer-hook in the repository's
-[README](https://github.com/solana-labs/solana-program-library/tree/master/token/transfer-hook-interface/README.md).
+[README](https://github.com/solana-labs/solana-program-library/tree/master/token/transfer-hook/interface/README.md).
 
 The `spl-transfer-hook-interface` library provides offchain and onchain helpers
 for resolving the additional accounts required. See
-[invoke.rs](https://github.com/solana-labs/solana-program-library/tree/master/token/transfer-hook-interface/src/invoke.rs)
+[invoke.rs](https://github.com/solana-labs/solana-program-library/tree/master/token/transfer-hook/interface/src/invoke.rs)
 for usage on-chain, and
-[offchain.rs](https://github.com/solana-labs/solana-program-library/tree/master/token/transfer-hook-interface/src/offchain.rs)
+[offchain.rs](https://github.com/solana-labs/solana-program-library/tree/master/token/transfer-hook/interface/src/offchain.rs)
 for fetching the additional required account metas with any async off-chain client
 like `BanksClient` or `RpcClient`.
 
 A usable example program exists at
-[spl-transfer-hook-example](https://github.com/solana-labs/solana-program-library/tree/master/token/transfer-hook-example).
+[spl-transfer-hook-example](https://github.com/solana-labs/solana-program-library/tree/master/token/transfer-hook/example).
 Token-2022 uses this example program in tests to ensure that it properly uses
 the transfer hook interface.
 

token/client/Cargo.toml

@@ -25,7 +25,7 @@ spl-memo = { version = "4.0.0", path = "../../memo/program", features = ["no-ent
 spl-token = { version = "4.0", path="../program", features = [ "no-entrypoint" ] }
 spl-token-2022 = { version = "0.9", path="../program-2022" }
 spl-token-metadata-interface = { version = "0.2", path="../../token-metadata/interface" }
-spl-transfer-hook-interface = { version = "0.3", path="../transfer-hook-interface" }
+spl-transfer-hook-interface = { version = "0.3", path="../transfer-hook/interface" }
 thiserror = "1.0"
 
 [features]

token/program-2022-test/Cargo.toml

@@ -30,6 +30,6 @@ spl-token-2022 = { version = "0.9", path="../program-2022", features = ["no-entr
 spl-instruction-padding = { version = "0.1.0", path="../../instruction-padding/program", features = ["no-entrypoint"] }
 spl-token-client = { version = "0.7", path = "../client" }
 spl-token-metadata-interface = { version = "0.2", path = "../../token-metadata/interface" }
-spl-transfer-hook-example = { version = "0.3", path="../transfer-hook-example", features = ["no-entrypoint"] }
-spl-transfer-hook-interface = { version = "0.3", path="../transfer-hook-interface" }
+spl-transfer-hook-example = { version = "0.3", path="../transfer-hook/example", features = ["no-entrypoint"] }
+spl-transfer-hook-interface = { version = "0.3", path="../transfer-hook/interface" }
 test-case = "3.2"

token/program-2022/Cargo.toml

@@ -28,7 +28,7 @@ solana-zk-token-sdk = "1.17.2"
 spl-memo = { version = "4.0.0", path = "../../memo/program", features = [ "no-entrypoint" ] }
 spl-token = { version = "4.0",  path = "../program", features = ["no-entrypoint"] }
 spl-token-metadata-interface = { version = "0.2.0", path = "../../token-metadata/interface" }
-spl-transfer-hook-interface = { version = "0.3.0", path = "../transfer-hook-interface" }
+spl-transfer-hook-interface = { version = "0.3.0", path = "../transfer-hook/interface" }
 spl-type-length-value = { version = "0.3.0", path = "../../libraries/type-length-value" }
 spl-pod = { version = "0.1.0", path = "../../libraries/pod" }
 thiserror = "1.0"

token/transfer-hook-example/Cargo.toml renamed to token/transfer-hook/example/Cargo.toml

@@ -14,10 +14,10 @@ test-sbf = []
 [dependencies]
 arrayref = "0.3.7"
 solana-program = "1.17.2"
-spl-tlv-account-resolution = { version = "0.4" , path = "../../libraries/tlv-account-resolution" }
-spl-token-2022 = { version = "0.9",  path = "../program-2022", features = ["no-entrypoint"] }
-spl-transfer-hook-interface = { version = "0.3" , path = "../transfer-hook-interface" }
-spl-type-length-value = { version = "0.3" , path = "../../libraries/type-length-value" }
+spl-tlv-account-resolution = { version = "0.4" , path = "../../../libraries/tlv-account-resolution" }
+spl-token-2022 = { version = "0.9",  path = "../../program-2022", features = ["no-entrypoint"] }
+spl-transfer-hook-interface = { version = "0.3" , path = "../interface" }
+spl-type-length-value = { version = "0.3" , path = "../../../libraries/type-length-value" }
 
 [dev-dependencies]
 solana-program-test = "1.17.2"

token/transfer-hook-example/README.md renamed to token/transfer-hook/example/README.md

@@ -4,7 +4,7 @@ Full example program and tests implementing the `spl-transfer-hook-interface`,
 to be used for testing a program that calls into the `spl-transfer-hook-interface`.
 
 See the
-[SPL Transfer Hook Interface](https://github.com/solana-labs/solana-program-library/tree/master/token/transfer-hook-interface)
+[SPL Transfer Hook Interface](https://github.com/solana-labs/solana-program-library/tree/master/token/transfer-hook/interface)
 code for more information.
 
 ### Example usage of example