Flow•2y 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?

Needle•6/27/24, 10:26 PM

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Giovanni SOP•6/27/24, 10:26 PM

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

Giovanni SOP•6/27/24, 10:29 PM

cc @turbolent @Supun

Giovanni SOP•6/27/24, 10:43 PM

takes an array of values as 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

SSupun I see. As a quick workaround, you could construct a new `EVMAddress`, by passing...

Giovanni SOP•6/27/24, 10:52 PM

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

SSupun This is the expected behaviour for field access of a contract. The limitation he...

Giovanni SOP•6/27/24, 11:00 PM

Ah, got it. Thank you