Draft: eMode draft impl (WIP)

.gitignore

@@ -1,3 +1,4 @@
 contracts/suilend/build
 suilend-cli/node_modules
-contracts/oracle/build
+contracts/oracle/build
+contracts/suilend/build

contracts/suilend/sources/cell.move

@@ -16,6 +16,10 @@ module suilend::cell {
     public fun get<Element>(cell: &Cell<Element>): &Element {
         option::borrow(&cell.element)
     }
+
+    public fun get_mut<Element>(cell: &mut Cell<Element>): &mut Element {
+        option::borrow_mut(&mut cell.element)
+    }
 
     public fun destroy<Element>(cell: Cell<Element>): Element {
         let Cell { element } = cell;

contracts/suilend/sources/lending_market.move

@@ -356,7 +356,9 @@ module suilend::lending_market {
 
         let (receive_balance, borrow_amount_with_fees) = reserve::borrow_liquidity<P, T>(reserve, amount);
         let origination_fee_amount = borrow_amount_with_fees - balance::value(&receive_balance); 
-        obligation::borrow<P>(obligation, reserve, clock, borrow_amount_with_fees);
+        obligation::borrow<P>(obligation, &mut lending_market.reserves, reserve_array_index, clock, borrow_amount_with_fees);
+
+        let reserve = vector::borrow_mut(&mut lending_market.reserves, reserve_array_index);
 
         let borrow_value = reserve::market_value_upper_bound(reserve, decimal::from(borrow_amount_with_fees));
         rate_limiter::process_qty(
@@ -377,6 +379,26 @@ module suilend::lending_market {
         obligation::zero_out_rewards_if_looped(obligation, &mut lending_market.reserves, clock);
         coin::from_balance(receive_balance, ctx)
     }
+
+    /// Set emode for obligation - T is the deposit coin type
+    public fun set_emode<P>(
+        lending_market: &mut LendingMarket<P>,
+        obligation_owner_cap: &ObligationOwnerCap<P>,
+        clock: &Clock
+    ) {
+        assert!(lending_market.version == CURRENT_VERSION, EIncorrectVersion);
+
+        let obligation = object_table::borrow_mut(
+            &mut lending_market.obligations, 
+            obligation_owner_cap.obligation_id
+        );
+
+        obligation::set_emode(
+            obligation,
+            &mut lending_market.reserves,
+            clock,
+        );
+    }
 
     public fun withdraw_ctokens<P, T>(
         lending_market: &mut LendingMarket<P>,