task5

mover/flatflax/code/task5/Move.toml

@@ -0,0 +1,39 @@
+[package]
+name = "task5"
+edition = "2024.beta" # edition = "legacy" to use legacy (pre-2024) Move
+# license = ""           # e.g., "MIT", "GPL", "Apache 2.0"
+# authors = ["..."]      # e.g., ["Joe Smith ([email protected])", "John Snow ([email protected])"]
+
+[dependencies]
+Sui = { git = "https://gitee.com/MystenLabs/sui.git", subdir = "crates/sui-framework/packages/sui-framework", rev = "framework/testnet" }
+faucet_coin = { local = "../task2/faucet_coin" }
+mycoin = { local = "../task2/mycoin" }
+
+# For remote import, use the `{ git = "...", subdir = "...", rev = "..." }`.
+# Revision can be a branch, a tag, and a commit hash.
+# MyRemotePackage = { git = "https://some.remote/host.git", subdir = "remote/path", rev = "main" }
+
+# For local dependencies use `local = path`. Path is relative to the package root
+# Local = { local = "../path/to" }
+
+# To resolve a version conflict and force a specific version for dependency
+# override use `override = true`
+# Override = { local = "../conflicting/version", override = true }
+
+[addresses]
+task5 = "0x0"
+
+# Named addresses will be accessible in Move as `@name`. They're also exported:
+# for example, `std = "0x1"` is exported by the Standard Library.
+# alice = "0xA11CE"
+
+[dev-dependencies]
+# The dev-dependencies section allows overriding dependencies for `--test` and
+# `--dev` modes. You can introduce test-only dependencies here.
+# Local = { local = "../path/to/dev-build" }
+
+[dev-addresses]
+# The dev-addresses section allows overwriting named addresses for the `--test`
+# and `--dev` modes.
+# alice = "0xB0B"
+

mover/flatflax/code/task5/sources/task5.move

@@ -0,0 +1,143 @@
+/*
+/// Module: task5
+module task5::task5;
+*/
+module task5::swap {
+    use sui::object::{Self, UID};
+    use sui::transfer;
+    use sui::tx_context::{Self, TxContext};
+    use sui::coin::{Self, Coin};
+    use sui::balance::{Self, Balance};
+    use sui::event;
+    use std::string::{Self, String};
+
+    use mycoin::my_coin::MY_COIN;
+    use faucet_coin::faucet_coin::FAUCET_COIN;
+
+    const E_INSUFFICIENT_LIQUIDITY: u64 = 0;
+    const E_ZERO_AMOUNT: u64 = 1;
+
+    public struct Pool has key {
+        id: UID,
+        // 代币A的余额
+        coin_a: Balance<MY_COIN>,
+        // 代币B的余额
+        coin_b: Balance<FAUCET_COIN>,
+    }
+
+    public struct LiquidityEvent has copy, drop {
+        provider: address, // 提供流动性的地址
+        coin_a_amount: u64, // 代币A的数量
+        coin_b_amount: u64, // 代币B的数量
+        coin_a_type: String, // 代币A的类型
+        coin_b_type: String, // 代币B的类型
+        timestamp: u64, // 时间戳
+    }
+
+    public struct SwapEvent has copy, drop {
+        sender: address, // 发起交换的地址
+        coin_in_amount: u64, // 输入代币的数量
+        coin_out_amount: u64, // 输出代币的数量
+        coin_in_type: String, // 输入代币的类型
+        coin_out_type: String, // 输出代币的类型
+        timestamp: u64, // 时间戳
+    }
+
+    fun init(ctx: &mut TxContext) {
+        let pool = Pool {
+            id: object::new(ctx), // 生成新的唯一标识符
+            coin_a: balance::zero(), // 初始代币A的余额为零
+            coin_b: balance::zero(), // 初始代币B的余额为零
+        };
+        transfer::share_object(pool); // 将流动性池共享
+    }
+
+    public entry fun add_liquidity(
+        pool: &mut Pool,
+        coin_a: Coin<MY_COIN>,
+        coin_b: Coin<FAUCET_COIN>,
+        ctx: &mut TxContext
+    ) {
+        let a_amount = coin::value(&coin_a); // 获取代币A的数量
+        let b_amount = coin::value(&coin_b); // 获取代币B的数量
+
+        assert!(a_amount > 0 && b_amount > 0, E_ZERO_AMOUNT); // 确保提供的代币数量大于零
+
+        balance::join(&mut pool.coin_a, coin::into_balance(coin_a)); // 将代币A加入流动性池
+        balance::join(&mut pool.coin_b, coin::into_balance(coin_b)); // 将代币B加入流动性池
+
+        // 记录添加流动性的事件
+        event::emit(LiquidityEvent {
+            provider: tx_context::sender(ctx), // 提供流动性的地址
+            coin_a_amount: a_amount, // 代币A的数量
+            coin_b_amount: b_amount, // 代币B的数量
+            coin_a_type: string::utf8(b"MY_COIN"), // 代币A的类型
+            coin_b_type: string::utf8(b"FAUCET_COIN"), // 代币B的类型
+            timestamp: tx_context::epoch(ctx), // 当前时间戳
+        });
+    }
+
+    public entry fun swap_a_to_b(
+        pool: &mut Pool,
+        coin_a_in: Coin<MY_COIN>,
+        ctx: &mut TxContext
+    ) {
+        let a_amount = coin::value(&coin_a_in); // 获取输入的代币A的数量
+        assert!(a_amount > 0, E_ZERO_AMOUNT); // 确保输入的代币数量大于零
+
+        let b_reserve = balance::value(&pool.coin_b); // 获取代币B的储备量
+        assert!(b_reserve > 0, E_INSUFFICIENT_LIQUIDITY); // 确保代币B的储备量大于零
+
+        let a_reserve = balance::value(&pool.coin_a); // 获取代币A的储备量
+        let b_out = (a_amount * b_reserve) / (a_reserve + a_amount); // 计算可以换取的代币B的数量
+
+        assert!(b_out > 0 && b_out <= b_reserve, E_INSUFFICIENT_LIQUIDITY); // 确保可以换取的代币B数量有效
+
+        // 更新流动性池的余额
+        balance::join(&mut pool.coin_a, coin::into_balance(coin_a_in)); // 将输入的代币A加入流动性池
+        let coin_b_out = coin::take(&mut pool.coin_b, b_out, ctx); // 从流动性池中取出代币B
+        transfer::public_transfer(coin_b_out, tx_context::sender(ctx)); // 将代币B转给发起者
+
+        // 记录交换事件
+        event::emit(SwapEvent {
+            sender: tx_context::sender(ctx), // 发起交换的地址
+            coin_in_amount: a_amount, // 输入的代币A的数量
+            coin_out_amount: b_out, // 输出的代币B的数量
+            coin_in_type: string::utf8(b"MY_COIN"), // 输入的代币A的类型
+            coin_out_type: string::utf8(b"FAUCET_COIN"), // 输出的代币B的类型
+            timestamp: tx_context::epoch(ctx), // 当前时间戳
+        });
+    }
+
+    public entry fun swap_b_to_a(
+        pool: &mut Pool,
+        coin_b_in: Coin<FAUCET_COIN>,
+        ctx: &mut TxContext
+    ) {
+        let b_amount = coin::value(&coin_b_in); // 获取输入的代币B的数量
+        assert!(b_amount > 0, E_ZERO_AMOUNT); // 确保输入的代币数量大于零
+
+        let a_reserve = balance::value(&pool.coin_a); // 获取代币A的储备量
+        assert!(a_reserve > 0, E_INSUFFICIENT_LIQUIDITY); // 确保代币A的储备量大于零
+
+        let b_reserve = balance::value(&pool.coin_b); // 获取代币B的储备量
+        let a_out = (b_amount * a_reserve) / (b_reserve + b_amount); // 计算可以换取的代币B的数量
+
+        assert!(a_out > 0 && a_out <= a_reserve, E_INSUFFICIENT_LIQUIDITY); // 确保可以换取的代币B数量有效
+
+        // 更新流动性池的余额
+        balance::join(&mut pool.coin_b, coin::into_balance(coin_b_in)); // 将输入的代币A加入流动性池
+        let coin_a_out = coin::take(&mut pool.coin_a, a_out, ctx); // 从流动性池中取出代币A
+        transfer::public_transfer(coin_a_out, tx_context::sender(ctx)); // 将代币A转给发起者
+
+        // 记录交换事件
+        event::emit(SwapEvent {
+            sender: tx_context::sender(ctx), // 发起交换的地址
+            coin_in_amount: b_amount, // 输入的代币B的数量
+            coin_out_amount: a_out, // 输出的代币A的数量
+            coin_in_type: string::utf8(b"FAUCET_COIN"), // 输入的代币B的类型
+            coin_out_type: string::utf8(b"MY_COIN"), // 输出的代币A的类型
+            timestamp: tx_context::epoch(ctx), // 当前时间戳
+        });
+    }
+}

mover/flatflax/code/task5/tests/task5_tests.move

@@ -0,0 +1,18 @@
+/*
+#[test_only]
+module task5::task5_tests;
+// uncomment this line to import the module
+// use task5::task5;
+
+const ENotImplemented: u64 = 0;
+
+#[test]
+fun test_task5() {
+    // pass
+}
+
+#[test, expected_failure(abort_code = ::task5::task5_tests::ENotImplemented)]
+fun test_task5_fail() {
+    abort ENotImplemented
+}
+*/

mover/flatflax/readme.md

@@ -37,9 +37,9 @@
 - [✓] play game hash: G84JB8K1TBEQowPG1srqFLsWTQWANgrWThNjQYpjKaAz
 
 ##   05 Move Swap
-- [] swap package id :
-- [] call swap CoinA-> CoinB  hash :
-- [] call swap CoinB-> CoinA  hash :
+- [✓] swap package id : 0x7fed720b4f9239aeaee760eeda592afa07fc3a5ec806b7b3ed132172b30b0a35
+- [✓] call swap CoinA-> CoinB  hash :E29EEZFJCer4vH7Wht7yPr1drnSNbrEtKU9YMBSxBJMd
+- [✓] call swap CoinB-> CoinA  hash :7bnqdQjufjw1fXdEKtfoEtJsETVHqQVJDZ5cjVUVk3wd
 
 ##   06 Dapp-kit SDK PTB
 - [] save hash :