Add burn notification to jetton parsing

Author: serejkaaa512

nekoton-contracts/src/lib.rs

@@ -146,6 +146,7 @@ mod utils {
         (@abi_version v2_1) => { ::ton_abi::contract::ABI_VERSION_2_1 };
         (@abi_version v2_2) => { ::ton_abi::contract::ABI_VERSION_2_2 };
         (@abi_version v2_3) => { ::ton_abi::contract::ABI_VERSION_2_3 };
+        (@abi_version v2_7) => { ::ton_abi::contract::ABI_VERSION_2_7 };
 
         (@function_id $f:ident) => { $f.get_function_id() };
         (@function_id $f:ident $id:literal) => { $id };

src/core/jetton_wallet/mod.rs

@@ -18,6 +18,7 @@ use super::{utils, ContractSubscription, InternalMessage};
 
 pub const JETTON_TRANSFER_OPCODE: u32 = 0x0f8a7ea5;
 pub const JETTON_INTERNAL_TRANSFER_OPCODE: u32 = 0x178d4519;
+pub const JETTON_BURN_NOTIFICATION_OPCODE: u32 = 0x7bdd97de;
 
 pub struct JettonWallet {
     clock: Arc<dyn Clock>,
@@ -246,6 +247,9 @@ impl JettonWallet {
                                 JettonWalletTransaction::InternalTransfer(transfer) => {
                                     balance += transfer.tokens.clone().to_bigint().trust_me();
                                 }
+                                JettonWalletTransaction::BurnNotification(transfer) => {
+                                    balance -= transfer.tokens.clone().to_bigint().trust_me();
+                                }
                             }
                         }
 

src/core/parsing.rs

@@ -10,7 +10,9 @@ use nekoton_abi::*;
 use nekoton_contracts::tip4_1::nft_contract;
 use nekoton_contracts::{old_tip3, tip3_1};
 
-use crate::core::jetton_wallet::{JETTON_INTERNAL_TRANSFER_OPCODE, JETTON_TRANSFER_OPCODE};
+use crate::core::jetton_wallet::{
+    JETTON_BURN_NOTIFICATION_OPCODE, JETTON_INTERNAL_TRANSFER_OPCODE, JETTON_TRANSFER_OPCODE,
+};
 use crate::core::models::*;
 use crate::core::ton_wallet::{MultisigType, WalletType};
 
@@ -706,7 +708,10 @@ pub fn parse_jetton_transaction(
 
     let opcode = body.get_next_u32().ok()?;
 
-    if opcode != JETTON_TRANSFER_OPCODE && opcode != JETTON_INTERNAL_TRANSFER_OPCODE {
+    if opcode != JETTON_TRANSFER_OPCODE
+        && opcode != JETTON_INTERNAL_TRANSFER_OPCODE
+        && opcode != JETTON_BURN_NOTIFICATION_OPCODE
+    {
         return None;
     }
 
@@ -732,6 +737,12 @@ pub fn parse_jetton_transaction(
                 tokens: amount,
             },
         )),
+        JETTON_BURN_NOTIFICATION_OPCODE => Some(JettonWalletTransaction::BurnNotification(
+            JettonBurnNotification {
+                from: addr,
+                tokens: amount,
+            },
+        )),
         _ => None,
     }
 }

src/models.rs

@@ -283,6 +283,7 @@ pub enum TokenWalletTransaction {
 pub enum JettonWalletTransaction {
     Transfer(JettonOutgoingTransfer),
     InternalTransfer(JettonIncomingTransfer),
+    BurnNotification(JettonBurnNotification),
 }
 
 #[derive(Clone, Debug, Serialize, Deserialize)]
@@ -321,6 +322,14 @@ pub struct JettonIncomingTransfer {
     pub tokens: BigUint,
 }
 
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct JettonBurnNotification {
+    #[serde(with = "serde_string")]
+    pub from: MsgAddressInt,
+    #[serde(with = "serde_string")]
+    pub tokens: BigUint,
+}
+
 #[derive(Clone, Debug, Serialize, Deserialize)]
 pub struct JettonOutgoingTransfer {
     #[serde(with = "serde_string")]