more sway examples (#118)

* Create liquiditypool.ts

* Update index.ts (#119)

* Update Forc.toml (#120)

Author: SilentCicero

app/src/features/editor/examples/sway/index.ts

@@ -1,10 +1,12 @@
 import { ExampleMenuItem } from "../../components/ExampleDropdown";
 import { EXAMPLE_SWAY_CONTRACT_COUNTER } from "./counter";
+import { EXAMPLE_SWAY_CONTRACT_LIQUIDITY_POOL } from "./liquiditypool";
 import { EXAMPLE_SWAY_CONTRACT_SINGLEASSET } from "./singleasset";
 import { EXAMPLE_SWAY_CONTRACT_MULTIASSET } from "./multiasset";
 
 export const EXAMPLE_SWAY_CONTRACTS: ExampleMenuItem[] = [
   { label: "Counter.sw", code: EXAMPLE_SWAY_CONTRACT_COUNTER },
+  { label: "LiquidityPool.sw", code: EXAMPLE_SWAY_CONTRACT_LIQUIDITY_POOL },
   { label: "SingleAsset.sw", code: EXAMPLE_SWAY_CONTRACT_SINGLEASSET },
   { label: "MultiAsset.sw", code: EXAMPLE_SWAY_CONTRACT_MULTIASSET },
 ];

app/src/features/editor/examples/sway/liquiditypool.ts

@@ -0,0 +1,43 @@
+export const EXAMPLE_SWAY_CONTRACT_LIQUIDITY_POOL = `contract;
+ 
+use std::{
+    asset::{
+        mint_to,
+        transfer,
+    },
+    call_frames::msg_asset_id,
+    constants::DEFAULT_SUB_ID,
+    context::msg_amount
+};
+ 
+abi LiquidityPool {
+    fn deposit(recipient: Address);
+    fn withdraw(recipient: Address);
+}
+ 
+const BASE_ASSET: AssetId = AssetId::from(0x9ae5b658754e096e4d681c548daf46354495a437cc61492599e33fc64dcdc30c);
+ 
+impl LiquidityPool for Contract {
+    fn deposit(recipient: Address) {
+        assert(msg_asset_id() == BASE_ASSET);
+        assert(msg_amount() > 0);
+ 
+        // Mint two times the amount.
+        let amount_to_mint = msg_amount() * 2;
+ 
+        // Mint some LP assets based upon the amount of the base asset.
+        mint_to(Identity::Address(recipient), DEFAULT_SUB_ID, amount_to_mint);
+    }
+ 
+    fn withdraw(recipient: Address) {
+        let asset_id = AssetId::default();
+        assert(msg_asset_id() == asset_id);
+        assert(msg_amount() > 0);
+ 
+        // Amount to withdraw.
+        let amount_to_transfer = msg_amount() / 2;
+ 
+        // Transfer base asset to recipient.
+        transfer(Identity::Address(recipient), BASE_ASSET, amount_to_transfer);
+    }
+}`;

projects/swaypad/Forc.toml

@@ -6,4 +6,4 @@ name = "swaypad"
 
 [dependencies]
 standards = { git = "https://github.com/FuelLabs/sway-standards", tag = "v0.7.0" }
-sway_libs = { git = "https://github.com/FuelLabs/sway-libs", tag = "v0.25.1" }
+sway_libs = { git = "https://github.com/FuelLabs/sway-libs", tag = "v0.25.2" }