Merge pull request #8 from rainlanguage/2025-10-29-iau

IAU Price Feed

Author: thedavidmeister

src/generated/PythWords.pointers.sol

@@ -10,7 +10,7 @@ pragma solidity ^0.8.25;
 // file needs the contract to exist so that it can be compiled.
 
 /// @dev Hash of the known bytecode.
-bytes32 constant BYTECODE_HASH = bytes32(0xa9fe1909ca00897783bf99e68750a319e8294464f653fd428a391d9f68862f8e);
+bytes32 constant BYTECODE_HASH = bytes32(0x6ad42cc38a63b0ccefc9db597401a93d114999576e1e6c100ca947b3e8c862d9);
 
 /// @dev The hash of the meta that describes the contract.
 bytes32 constant DESCRIBED_BY_META_HASH = bytes32(0xe7bb5842b2cf1d25681a9885109fbf8943495bcebb9ec049bc3790e5db57fa80);

src/lib/pyth/LibPyth.sol

@@ -114,6 +114,12 @@ library LibPyth {
     // slither-disable-next-line too-many-digits
     uint256 constant PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_SPLG_USD =
         0x924571756974792e55532e53504c472f55534400000000000000000000000000;
+    /// iShares Gold Trust (IAU)
+    bytes32 constant PRICE_FEED_ID_EQUITY_US_IAU_USD =
+        0xf703fbded84f7da4bd9ff4661b5d1ffefa8a9c90b7fa12f247edc8251efac914;
+    // slither-disable-next-line too-many-digits
+    uint256 constant PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_IAU_USD =
+        0x914571756974792e55532e4941552f5553440000000000000000000000000000;
 
     /// TODO replace with O(1) lookup table.
     function getPriceFeedContract(uint256 chainId) internal pure returns (IPyth) {
@@ -161,6 +167,8 @@ library LibPyth {
             return PRICE_FEED_ID_EQUITY_US_BRK_B_USD;
         } else if (feedSymbol == PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_SPLG_USD) {
             return PRICE_FEED_ID_EQUITY_US_SPLG_USD;
+        } else if (feedSymbol == PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_IAU_USD) {
+            return PRICE_FEED_ID_EQUITY_US_IAU_USD;
         } else {
             revert UnsupportedFeedSymbol();
         }

test/src/lib/pyth/LibPyth.constants.t.sol

@@ -77,5 +77,9 @@ contract LibPythConstantsTest is Test {
             LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_SPLG_USD,
             IntOrAString.unwrap(LibIntOrAString.fromString2("Equity.US.SPLG/USD"))
         );
+        assertEq(
+            LibPyth.PRICE_FEED_SYMBOL_INTORASTRING_EQUITY_US_IAU_USD,
+            IntOrAString.unwrap(LibIntOrAString.fromString2("Equity.US.IAU/USD"))
+        );
     }
 }

test/src/lib/pyth/LibPyth.getPriceFeedId.t.sol

@@ -74,6 +74,10 @@ contract LibPythGetPriceFeedIdTest is Test {
             LibPyth.PRICE_FEED_ID_EQUITY_US_SPLG_USD,
             LibPyth.getPriceFeedId(LibIntOrAString.fromString2("Equity.US.SPLG/USD"))
         );
+        assertEq(
+            LibPyth.PRICE_FEED_ID_EQUITY_US_IAU_USD,
+            LibPyth.getPriceFeedId(LibIntOrAString.fromString2("Equity.US.IAU/USD"))
+        );
     }
 
     function testPriceFeedIdUnknownMappings(IntOrAString symbol) external {
@@ -94,6 +98,7 @@ contract LibPythGetPriceFeedIdTest is Test {
                 && IntOrAString.unwrap(symbol) != IntOrAString.unwrap(LibIntOrAString.fromString2("Equity.US.MSTR/USD"))
                 && IntOrAString.unwrap(symbol) != IntOrAString.unwrap(LibIntOrAString.fromString2("Equity.US.BRK-B/USD"))
                 && IntOrAString.unwrap(symbol) != IntOrAString.unwrap(LibIntOrAString.fromString2("Equity.US.SPLG/USD"))
+                && IntOrAString.unwrap(symbol) != IntOrAString.unwrap(LibIntOrAString.fromString2("Equity.US.IAU/USD"))
         );
         vm.expectRevert(UnsupportedFeedSymbol.selector);
         this.getPriceFeedIdExternal(symbol);

test/src/lib/pyth/LibPyth.getPriceNoOlderThan.t.sol

@@ -180,5 +180,12 @@ contract LibPythGetPriceNoOlderThanTest is Test {
             LibDecimalFloat.packLossless(78.71367e5, -5),
             LibDecimalFloat.packLossless(0.03281e5, -5)
         );
+
+        checkPriceNoOlderThan(
+            LibIntOrAString.fromString2("Equity.US.IAU/USD"),
+            LibDecimalFloat.packLossless(24 hours, 0),
+            LibDecimalFloat.packLossless(71.99028e5, -5),
+            LibDecimalFloat.packLossless(0.07147e5, -5)
+        );
     }
 }