From 501678447ae3c97533fad5bcaaa9a799cedb67cb Mon Sep 17 00:00:00 2001
From: Kyle Espinola <kyle.s.espinola@gmail.com>
Date: Wed, 8 Feb 2023 15:20:13 +0100
Subject: [PATCH] feat: add master edition account deserialization to spl
 metadata

---
 CHANGELOG.md        |  1 +
 spl/src/metadata.rs | 29 +++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 18a2928e2d..35386a0209 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@ The minor version will be incremented upon a breaking change and the patch versi
 
 ### Features
 
+- spl: Add `MasterEditionAccount` account deserialization to spl metadata ([#2393](https://github.com/coral-xyz/anchor/pull/2393)).
 - lang: Add the `InitSpace` derive macro to automatically calculate the space at the initialization of an account ([#2346](https://github.com/coral-xyz/anchor/pull/2346)).
 - cli: Add `env` option to verifiable builds ([#2325](https://github.com/coral-xyz/anchor/pull/2325)).
 - cli: Add `idl close` command to close a program's IDL account ([#2329](https://github.com/coral-xyz/anchor/pull/2329)).
diff --git a/spl/src/metadata.rs b/spl/src/metadata.rs
index c0d660409b..3f52ac0caf 100644
--- a/spl/src/metadata.rs
+++ b/spl/src/metadata.rs
@@ -543,6 +543,35 @@ impl Deref for MetadataAccount {
     }
 }
 
+#[derive(Clone, Debug, PartialEq)]
+pub struct MasterEditionAccount(mpl_token_metadata::state::MasterEditionV2);
+
+impl MasterEditionAccount {
+    pub const LEN: usize = mpl_token_metadata::state::MAX_MASTER_EDITION_LEN;
+}
+
+impl anchor_lang::AccountDeserialize for MasterEditionAccount {
+    fn try_deserialize_unchecked(buf: &mut &[u8]) -> anchor_lang::Result<Self> {
+        let result = mpl_token_metadata::state::MasterEditionV2::safe_deserialize(buf)?;
+        Ok(MasterEditionAccount(result))
+    }
+}
+
+impl Deref for MasterEditionAccount {
+    type Target = mpl_token_metadata::state::MasterEditionV2;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl anchor_lang::AccountSerialize for MasterEditionAccount {}
+
+impl anchor_lang::Owner for MasterEditionAccount {
+    fn owner() -> Pubkey {
+        ID
+    }
+}
+
 #[derive(Clone)]
 pub struct Metadata;