From 265eedc5a319bcb27ccf72a773fbcf35fb621607 Mon Sep 17 00:00:00 2001
From: Armani Ferrante <armaniferrante@gmail.com>
Date: Mon, 31 May 2021 11:52:46 -0700
Subject: [PATCH] spl: Add init and close open orders instructions to the dex
 (#245)

---
 Cargo.lock     |  4 ++--
 spl/Cargo.toml |  2 +-
 spl/src/dex.rs | 51 ++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 54 insertions(+), 3 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index e18a7434..e57d86c3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2781,8 +2781,8 @@ dependencies = [
 
 [[package]]
 name = "serum_dex"
-version = "0.3.0"
-source = "git+https://github.com/project-serum/serum-dex#66904088599c1a8d42623f6a6d157cec46c8da62"
+version = "0.3.1"
+source = "git+https://github.com/project-serum/serum-dex?tag=v0.3.1#7d1d41538417aa8721aabea9503bf9d99eab7cc4"
 dependencies = [
  "arrayref",
  "bincode",
diff --git a/spl/Cargo.toml b/spl/Cargo.toml
index 90cc359f..6754031b 100644
--- a/spl/Cargo.toml
+++ b/spl/Cargo.toml
@@ -12,6 +12,6 @@ devnet = []
 [dependencies]
 anchor-lang = { path = "../lang", version = "0.6.0", features = ["derive"] }
 lazy_static = "1.4.0"
-serum_dex = { git = "https://github.com/project-serum/serum-dex", version = "0.3.0", features = ["no-entrypoint"] }
+serum_dex = { git = "https://github.com/project-serum/serum-dex", tag = "v0.3.1", version = "0.3.1", features = ["no-entrypoint"] }
 solana-program = "1.6.6"
 spl-token = { version = "3.0.1", features = ["no-entrypoint"] }
diff --git a/spl/src/dex.rs b/spl/src/dex.rs
index 9a799cf3..5e28ddb1 100644
--- a/spl/src/dex.rs
+++ b/spl/src/dex.rs
@@ -82,6 +82,41 @@ pub fn settle_funds<'info>(
     Ok(())
 }
 
+pub fn init_open_orders<'info>(
+    ctx: CpiContext<'_, '_, '_, 'info, InitOpenOrders<'info>>,
+) -> ProgramResult {
+    let ix = serum_dex::instruction::init_open_orders(
+        &ID,
+        ctx.accounts.open_orders.key,
+        ctx.accounts.authority.key,
+        ctx.accounts.market.key,
+    )?;
+    solana_program::program::invoke_signed(
+        &ix,
+        &ToAccountInfos::to_account_infos(&ctx),
+        ctx.signer_seeds,
+    )?;
+    Ok(())
+}
+
+pub fn close_open_orders<'info>(
+    ctx: CpiContext<'_, '_, '_, 'info, CloseOpenOrders<'info>>,
+) -> ProgramResult {
+    let ix = serum_dex::instruction::close_open_orders(
+        &ID,
+        ctx.accounts.open_orders.key,
+        ctx.accounts.authority.key,
+        ctx.accounts.destination.key,
+        ctx.accounts.market.key,
+    )?;
+    solana_program::program::invoke_signed(
+        &ix,
+        &ToAccountInfos::to_account_infos(&ctx),
+        ctx.signer_seeds,
+    )?;
+    Ok(())
+}
+
 #[derive(Accounts)]
 pub struct NewOrderV3<'info> {
     pub market: AccountInfo<'info>,
@@ -116,3 +151,19 @@ pub struct SettleFunds<'info> {
     pub vault_signer: AccountInfo<'info>,
     pub token_program: AccountInfo<'info>,
 }
+
+#[derive(Accounts)]
+pub struct InitOpenOrders<'info> {
+    pub open_orders: AccountInfo<'info>,
+    pub authority: AccountInfo<'info>,
+    pub market: AccountInfo<'info>,
+    pub rent: AccountInfo<'info>,
+}
+
+#[derive(Accounts)]
+pub struct CloseOpenOrders<'info> {
+    pub open_orders: AccountInfo<'info>,
+    pub authority: AccountInfo<'info>,
+    pub destination: AccountInfo<'info>,
+    pub market: AccountInfo<'info>,
+}