Add basics/counter/steel

basics/counter/steel/Cargo.toml

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+[workspace]
+members = ["api", "program"]
+resolver = "2"
+
+[workspace.dependencies]
+solana-program = "1.18.17"
+steel = "2.1"
+bytemuck = "1.4"
+num_enum = "0.7"

basics/counter/steel/README.md

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+# Counter: Solana Steel
+
+This example program is written in Solana using Steel toolsuite.

basics/counter/steel/api/Cargo.toml

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+[package]
+name = "counter-solana-steel-api"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+solana-program = "=1.18.17"
+steel = "2.1"
+bytemuck = "1.4"
+num_enum = "0.7"
+
+[lib]
+crate-type = ["cdylib", "lib"]

basics/counter/steel/api/src/consts.rs

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+pub const COUNTER_SEEDS: &[u8] = b"counter"; // counter seeds

basics/counter/steel/api/src/instruction.rs

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+use crate::{consts::*, state::*};
+use steel::*;
+
+#[repr(u8)]
+#[derive(Clone, Copy, Debug, Eq, PartialEq, TryFromPrimitive)]
+pub enum CounterInstruction {
+    Initialize = 0,
+    Increment = 1,
+}
+
+instruction!(CounterInstruction, Initialize);
+// Initialize
+#[repr(C, packed)]
+#[derive(Clone, Copy, Debug, Pod, Zeroable)]
+pub struct Initialize {}
+
+impl Initialize {
+    pub fn process(accounts: &[AccountInfo<'_>]) -> ProgramResult {
+        let [counter_account, payer, system_program] = accounts else {
+            return Err(ProgramError::NotEnoughAccountKeys);
+        };
+
+        payer.is_writable()?.is_signer()?; // make use payer is writable and signer
+        system_program.is_program(&system_program::ID)?; // system program check
+        counter_account
+            .is_writable()? // check the account is writable
+            .has_seeds(&[b"counter"], &crate::ID)?; // check the address is derived from the right seeds
+
+        // create the counter account
+        create_account::<Counter>(
+            counter_account,  // account to be created
+            system_program,   // system program
+            payer,            // payer
+            &crate::ID,       // program id
+            &[COUNTER_SEEDS], // seeds
+        )?;
+
+        let counter = counter_account.as_account::<Counter>(&crate::ID)?;
+        let count = counter.count;
+
+        solana_program::msg!("Counter initialized! Count is {}", count);
+
+        Ok(())
+    }
+}
+
+instruction!(CounterInstruction, Increment);
+// Increment
+#[repr(C, packed)]
+#[derive(Clone, Copy, Debug, Pod, Zeroable)]
+pub struct Increment {}
+
+impl Increment {
+    pub fn process(accounts: &[AccountInfo<'_>]) -> ProgramResult {
+        let [counter_account] = accounts else {
+            return Err(ProgramError::NotEnoughAccountKeys);
+        };
+
+        counter_account
+            .is_writable()? // check the account is writable
+            .has_seeds(&[COUNTER_SEEDS], &crate::ID)?; // check the address is derived from the right seeds
+
+        let counter = counter_account.as_account_mut::<Counter>(&crate::ID)?;
+        counter.count += 1;
+
+        let count = counter.count;
+
+        solana_program::msg!("Counter state incremented to {:?}", count);
+
+        Ok(())
+    }
+}

basics/counter/steel/api/src/lib.rs

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+pub mod consts;
+pub mod instruction;
+pub mod state;
+
+pub mod prelude {
+    pub use crate::consts::*;
+    pub use crate::instruction::*;
+    pub use crate::state::*;
+}
+
+use steel::*;
+
+declare_id!("z7msBPQHDJjTvdQRoEcKyENgXDhSRYeHieN1ZMTqo35");

basics/counter/steel/api/src/state.rs

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+use steel::*;
+
+#[repr(u8)]
+#[derive(Clone, Copy, Debug, Eq, PartialEq, IntoPrimitive, TryFromPrimitive)]
+pub enum CounterAccount {
+    Counter = 0,
+}
+
+account!(CounterAccount, Counter);
+// Counter
+#[repr(C, packed)]
+#[derive(Clone, Copy, Debug, PartialEq, Pod, Zeroable)]
+pub struct Counter {
+    pub count: u64,
+}

basics/counter/steel/package.json

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+{
+  "name": "counter-solana-steel",
+  "version": "0.1.0",
+  "description": "Counter program written using Steel framework",
+  "main": "index.js",
+  "author": "The Wuh",
+  "license": "Apache-2.0",
+  "private": false,
+  "scripts": {
+    "test": "pnpm ts-mocha -p ./tests/tsconfig.test.json -t 1000000 ./tests/counter.test.ts",
+    "build-and-test": "cargo build-sbf --manifest-path=./program/Cargo.toml --sbf-out-dir=./tests/fixtures && pnpm test",
+    "build": "cargo build-sbf --manifest-path=./program/Cargo.toml --sbf-out-dir=./program/target/so",
+    "deploy": "solana program deploy ./program/target/so/program.so"
+  },
+  "devDependencies": {
+    "@types/bn.js": "^5.1.0",
+    "@types/chai": "^4.3.1",
+    "@types/mocha": "^10.0.9",
+    "@types/node": "^22.8.5",
+    "chai": "^4.3.4",
+    "mocha": "^10.8.2",
+    "solana-bankrun": "^0.4.0",
+    "ts-mocha": "^10.0.0",
+    "typescript": "^5"
+  },
+  "dependencies": {
+    "@solana/web3.js": "^1.95.4"
+  }
+}