22: Add dummy AnchorIdlJupiterPerpsCustodyDecoder.decodeCurrentCumulativeInterestRate() method

2026-06-30 16:52:57 +02:00
parent e754df67b6
commit 1f22f5f16b
1 changed files with 16 additions and 7 deletions
@@ -23,10 +23,6 @@ class AnchorIdlJupiterPerpsCustodyDecoder {
        return readPublicKey(data, MINT_OFFSET);
    }

-    BigInteger decodeCurrentCumulativeInterestRate(SolanaAccountInfo custodyAccountInfo) {
-        return null;
-    }
-
    private ΩSPLMintAddressΩ readPublicKey(
            byte[] data,
            int offset
@@ -47,9 +43,22 @@ class AnchorIdlJupiterPerpsCustodyDecoder {
    private static final int ANCHOR_DISCRIMINATOR_LENGTH = 8;
    private static final int PUBLIC_KEY_LENGTH = 32;

-    private static final int MINT_OFFSET =
-            ANCHOR_DISCRIMINATOR_LENGTH
-                    + PUBLIC_KEY_LENGTH; // pool
+    // Offsets:
+    //    8   discriminator
+    //   +32 pool
+    //   +32 mint
+    //   +32 token_account
+    //   +1  decimals
+    //   +1  is_stable
+    //   +45 oracle
+    //   +48 pricing
+    //   +7  permissions
+    //   +8  target_ratio_bps
+    //   +48 assets
+
+    private static final int MINT_OFFSET = ANCHOR_DISCRIMINATOR_LENGTH + PUBLIC_KEY_LENGTH;
+    private static final int FUNDING_RATE_STATE_OFFSET = 262;
+    private static final int CUMULATIVE_INTEREST_RATE_OFFSET = FUNDING_RATE_STATE_OFFSET;

    private static final Base58Codec base58 = new Base58CodecImpl();
 }