Flow•6mo ago

Giovanni S | Flow (2024-06-27)

I'm running to an issue running accessing a contract value in a Crescendo transaction - 9900f1b3e3d1c2ac98b4d70662b6e24506dc7ef745854f5467da1eeca4bae52f I need to access the dereferenced EVMAddress value in order to encode it. I also tried dereferencing in e971eb7ebfb42f2774032c98bb4be710626fb1cd8c838667af42b30a0d6e8cfb with * operator but I'm getting an error

[Error Code: 1101] error caused by: 1 error occurred:
    * transaction preprocess failed: [Error Code: 1101] cadence runtime error: Execution failed:
error: cannot apply unary operation * to type
  --> cfa5ce8cd7444c5a3ae8f4dc4aa4a237e6d86157c9134464aec93931210cb0e2:23:33
   |
23 |         let factoryEVMAddress = *FlowEVMBridgeUtils.bridgeFactoryEVMAddress
   |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected primitive or container of primitives, got `EVM.EVMAddress`

[Error Code: 1101] error caused by: 1 error occurred:
    * transaction preprocess failed: [Error Code: 1101] cadence runtime error: Execution failed:
error: cannot apply unary operation * to type
  --> cfa5ce8cd7444c5a3ae8f4dc4aa4a237e6d86157c9134464aec93931210cb0e2:23:33
   |
23 |         let factoryEVMAddress = *FlowEVMBridgeUtils.bridgeFactoryEVMAddress
   |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected primitive or container of primitives, got `EVM.EVMAddress`

Anyone know how I should be accessing contract fields by value now?

8 Replies

Needle•6mo ago

I've created a thread for your message. Please continue any relevant discussion in this thread. You can rename this thread using /title <new title> If this is a technical question that others may benefit from, considering also asking it on Stackoverflow: https://stackoverflow.com/questions/ask?tags=onflow-cadence

Giovanni SOP•6mo ago

I checked in on this FLIP but couldn't find an example https://github.com/onflow/flips/blob/main/cadence/20240612-import-contract-as-reference.md cc @turbolent @Supun

Unknown User•6mo ago

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Giovanni SOP•6mo ago

EVM.encodeABI takes an array of values as [AnyStruct] but only certain types can be encoded such that they're interprettable by EVM as compatible bytecode. These valid types include EVMAddress but I'm assuming that passing a reference to an EVMAddress is a different type. In the original transaction without dereferencing, I get this error

❯ flow-c1 transactions send cadence/transactions/bridge/admin/evm/set_registrar.cdc 5e52d93e181bab8c9dbbdedac562c644711f0516 --signer crescendo-flow-evm-bridge -n crescendo
Transaction ID: 9900f1b3e3d1c2ac98b4d70662b6e24506dc7ef745854f5467da1eeca4bae52f

Block ID    2d8660933718b4c904a4259ad28b7ce329d41a606fc68ec713af7357e87a9a76
Block Height    196394952
❌ Transaction Error
[Error Code: 1101] error caused by: 1 error occurred:
    * transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed:
  --> 9900f1b3e3d1c2ac98b4d70662b6e24506dc7ef745854f5467da1eeca4bae52f:25:18
   |
25 |             data: EVM.encodeABIWithSignature(
26 |                 "setRegistrar(address)",
27 |                 [FlowEVMBridgeUtils.bridgeFactoryEVMAddress]
28 |             ),
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: failed to ABI encode value of type &A.8c5303eaa26202d6.EVM.EVMAddress
   --> 8c5303eaa26202d6.EVM:579:8
    |
579 |         let arguments = InternalEVM.encodeABI(values)
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

❯ flow-c1 transactions send cadence/transactions/bridge/admin/evm/set_registrar.cdc 5e52d93e181bab8c9dbbdedac562c644711f0516 --signer crescendo-flow-evm-bridge -n crescendo
Transaction ID: 9900f1b3e3d1c2ac98b4d70662b6e24506dc7ef745854f5467da1eeca4bae52f

Block ID    2d8660933718b4c904a4259ad28b7ce329d41a606fc68ec713af7357e87a9a76
Block Height    196394952
❌ Transaction Error
[Error Code: 1101] error caused by: 1 error occurred:
    * transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed:
  --> 9900f1b3e3d1c2ac98b4d70662b6e24506dc7ef745854f5467da1eeca4bae52f:25:18
   |
25 |             data: EVM.encodeABIWithSignature(
26 |                 "setRegistrar(address)",
27 |                 [FlowEVMBridgeUtils.bridgeFactoryEVMAddress]
28 |             ),
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: failed to ABI encode value of type &A.8c5303eaa26202d6.EVM.EVMAddress
   --> 8c5303eaa26202d6.EVM:579:8
    |
579 |         let arguments = InternalEVM.encodeABI(values)
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Unknown User•6mo ago

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Giovanni SOP•6mo ago

Ah yeah, that makese sense. Is there a correct way to access the contract field or is this a bug?

Unknown User•6mo ago

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Giovanni SOP•6mo ago

Ah, got it. Thank you

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Giovanni S | Flow (2024-06-27)