Chainlink Pricefeed Example PriceConsumerV3.sol With AggregatorV3Interface.sol Directly In Contract

README.md

@@ -1,2 +1,18 @@
 # warping-contracts
-Example Solidity contracts transpiled to Cairo using Warp
+
+Transpiles in Warp with no errors in Solidity 0.8.14 with:
+
+```shell
+bin/warp transpile exampleContracts/chainlink/pricefeed/pricefeedExample.sol
+```
+
+Modified:
+
+-put contract AggregatorV3Interface.sol 
+https://github.com/smartcontractkit/chainlink/blob/develop/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol 
+directly into the pricefeed example contract instead of importing it to get around syntax transpiler issue.
+
+Contract from:
+
+https://docs.chain.link/data-feeds/using-data-feeds/#examine-the-sample-contract
+

exampleContracts/chainlink/pricefeed/pricefeedExample.sol

@@ -0,0 +1,59 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.14;
+
+// AggregatorV3Interface contract from: https://github.com/smartcontractkit/chainlink/blob/develop/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";
+
+interface AggregatorV3Interface {
+
+    function decimals() external view returns (uint8);
+
+    function description() external view returns (string memory);
+
+    function version() external view returns (uint256);
+
+    function getRoundData(uint80 _roundId)
+        external
+        view
+        returns (
+        uint80 roundId,
+        int256 answer,
+        uint256 startedAt,
+        uint256 updatedAt,
+        uint80 answeredInRound
+        );
+
+    function latestRoundData()
+        external
+        view
+        returns (
+        uint80 roundId,
+        int256 answer,
+        uint256 startedAt,
+        uint256 updatedAt,
+        uint80 answeredInRound
+        );
+}
+
+// Pricefeed example from: https://docs.chain.link/data-feeds/using-data-feeds/#examine-the-sample-contract
+
+contract PriceConsumerV3 {
+
+    /**
+     * Network: Sepolia
+     * Aggregator: BTC/USD
+     * Address: 0x1b44F3514812d835EB1BDB0acB33d3fA3351Ee43
+     */
+
+    AggregatorV3Interface internal priceFeed = AggregatorV3Interface(address(0x1b44F3514812d835EB1BDB0acB33d3fA3351Ee43)); //Added address type wrapper to resolve Starknet type error.
+
+    function getLatestPrice() public view returns (int) {
+        (
+            /* uint80 roundID */,
+            int price,
+            /*uint startedAt*/,
+            /*uint timeStamp*/,
+            /*uint80 answeredInRound*/
+        ) = priceFeed.latestRoundData();
+        return price;
+    }
+}

warp_output/exampleContracts/chainlink/pricefeed/pricefeedExample.sol/AggregatorV3Interface.cairo

@@ -0,0 +1,22 @@
+%lang starknet
+
+
+from starkware.cairo.common.uint256 import Uint256
+
+
+// Contract Def AggregatorV3Interface
+
+
+@contract_interface
+namespace AggregatorV3Interface{
+func decimals_313ce567()-> (__warp_0 : felt){
+}
+func description_7284e416()-> (__warp_1_len : felt, __warp_1 : felt*){
+}
+func version_54fd4d50()-> (__warp_2 : Uint256){
+}
+func getRoundData_9a6fc8f5(_roundId : felt)-> (roundId : felt, answer : Uint256, startedAt : Uint256, updatedAt : Uint256, answeredInRound : felt){
+}
+func latestRoundData_feaf968c()-> (roundId : felt, answer : Uint256, startedAt : Uint256, updatedAt : Uint256, answeredInRound : felt){
+}
+}

warp_output/exampleContracts/chainlink/pricefeed/pricefeedExample.sol/AggregatorV3Interface_sol_abi.json

@@ -0,0 +1,113 @@
+[
+  {
+    "inputs": [],
+    "name": "decimals",
+    "outputs": [
+      {
+        "internalType": "uint8",
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "description",
+    "outputs": [
+      {
+        "internalType": "string",
+        "name": "",
+        "type": "string"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint80",
+        "name": "_roundId",
+        "type": "uint80"
+      }
+    ],
+    "name": "getRoundData",
+    "outputs": [
+      {
+        "internalType": "uint80",
+        "name": "roundId",
+        "type": "uint80"
+      },
+      {
+        "internalType": "int256",
+        "name": "answer",
+        "type": "int256"
+      },
+      {
+        "internalType": "uint256",
+        "name": "startedAt",
+        "type": "uint256"
+      },
+      {
+        "internalType": "uint256",
+        "name": "updatedAt",
+        "type": "uint256"
+      },
+      {
+        "internalType": "uint80",
+        "name": "answeredInRound",
+        "type": "uint80"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "latestRoundData",
+    "outputs": [
+      {
+        "internalType": "uint80",
+        "name": "roundId",
+        "type": "uint80"
+      },
+      {
+        "internalType": "int256",
+        "name": "answer",
+        "type": "int256"
+      },
+      {
+        "internalType": "uint256",
+        "name": "startedAt",
+        "type": "uint256"
+      },
+      {
+        "internalType": "uint256",
+        "name": "updatedAt",
+        "type": "uint256"
+      },
+      {
+        "internalType": "uint80",
+        "name": "answeredInRound",
+        "type": "uint80"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "version",
+    "outputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  }
+]

warp_output/exampleContracts/chainlink/pricefeed/pricefeedExample.sol/PriceConsumerV3.cairo

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+%lang starknet
+
+
+from starkware.cairo.common.cairo_builtins import HashBuiltin
+from starkware.cairo.common.uint256 import Uint256
+from warplib.maths.external_input_check_ints import warp_external_input_check_int256
+
+
+func WS_WRITE0{syscall_ptr : felt*, pedersen_ptr : HashBuiltin*, range_check_ptr : felt}(loc: felt, value: felt) -> (res: felt){
+    WARP_STORAGE.write(loc, value);
+    return (value,);
+}
+
+
+func WS0_READ_felt{syscall_ptr : felt*, pedersen_ptr : HashBuiltin*, range_check_ptr : felt}(loc: felt) ->(val: felt){
+    alloc_locals;
+    let (read0) = WARP_STORAGE.read(loc);
+    return (read0,);
+}
+
+
+// Contract Def PriceConsumerV3
+
+
+namespace PriceConsumerV3{
+
+    // Dynamic variables - Arrays and Maps
+
+    // Static variables
+
+    const __warp_0_priceFeed = 0;
+
+
+    func __warp_init_PriceConsumerV3{syscall_ptr : felt*, pedersen_ptr : HashBuiltin*, range_check_ptr : felt}()-> (){
+    alloc_locals;
+
+
+
+        WS_WRITE0(__warp_0_priceFeed, 155680397429899150176167208149732158272590442051);
+
+
+
+        return ();
+
+    }
+
+}
+
+
+    @view
+    func getLatestPrice_8e15f473{syscall_ptr : felt*, pedersen_ptr : HashBuiltin*, range_check_ptr : felt}()-> (__warp_1 : Uint256){
+    alloc_locals;
+
+
+
+        let (__warp_se_0) = WS0_READ_felt(PriceConsumerV3.__warp_0_priceFeed);
+
+        let (__warp_gv0, __warp_2_price, __warp_gv1, __warp_gv2, __warp_gv3) = AggregatorV3Interface_warped_interface.latestRoundData_feaf968c(__warp_se_0);
+
+        warp_external_input_check_int256(__warp_2_price);
+
+
+
+        return (__warp_2_price,);
+
+    }
+
+
+    @constructor
+    func constructor{syscall_ptr : felt*, pedersen_ptr : HashBuiltin*, range_check_ptr : felt}(){
+    alloc_locals;
+    WARP_USED_STORAGE.write(1);
+
+
+
+        PriceConsumerV3.__warp_init_PriceConsumerV3();
+
+
+
+        return ();
+
+    }
+
+@storage_var
+func WARP_STORAGE(index: felt) -> (val: felt){
+}
+@storage_var
+func WARP_USED_STORAGE() -> (val: felt){
+}
+@storage_var
+func WARP_NAMEGEN() -> (name: felt){
+}
+func readId{syscall_ptr : felt*, pedersen_ptr : HashBuiltin*, range_check_ptr : felt}(loc: felt) -> (val: felt){
+    alloc_locals;
+    let (id) = WARP_STORAGE.read(loc);
+    if (id == 0){
+        let (id) = WARP_NAMEGEN.read();
+        WARP_NAMEGEN.write(id + 1);
+        WARP_STORAGE.write(loc, id + 1);
+        return (id + 1,);
+    }else{
+        return (id,);
+    }
+}
+
+
+// Contract Def AggregatorV3Interface@interface
+
+
+@contract_interface
+namespace AggregatorV3Interface_warped_interface{
+func decimals_313ce567()-> (__warp_0 : felt){
+}
+func description_7284e416()-> (__warp_1_len : felt, __warp_1 : felt*){
+}
+func version_54fd4d50()-> (__warp_2 : Uint256){
+}
+func getRoundData_9a6fc8f5(_roundId : felt)-> (roundId : felt, answer : Uint256, startedAt : Uint256, updatedAt : Uint256, answeredInRound : felt){
+}
+func latestRoundData_feaf968c()-> (roundId : felt, answer : Uint256, startedAt : Uint256, updatedAt : Uint256, answeredInRound : felt){
+}
+}

warp_output/exampleContracts/chainlink/pricefeed/pricefeedExample.sol/PriceConsumerV3_sol_abi.json

@@ -0,0 +1,15 @@
+[
+  {
+    "inputs": [],
+    "name": "getLatestPrice",
+    "outputs": [
+      {
+        "internalType": "int256",
+        "name": "",
+        "type": "int256"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  }
+]