decode

Types

DecodedCalldata

Result of decoding calldata against an ABI.

pub type DecodedCalldata {
  DecodedCalldata(
    function_name: String,
    arguments: List(types.AbiValue),
  )
}

Constructors

DecodedCalldata(
  function_name: String,
  arguments: List(types.AbiValue),
)

DecodedRevert

</>

Result of decoding a revert reason.

pub type DecodedRevert {
  RevertString(String)
  RevertPanic(Int)
  RevertCustomError(
    name: String,
    arguments: List(types.AbiValue),
  )
  RevertUnknown(BitArray)
}

Constructors

```
RevertString(String)
```
Standard Error(string) revert
```
RevertPanic(Int)
```
Standard Panic(uint256) revert

RevertCustomError(name: String, arguments: List(types.AbiValue))

Custom error decoded against an ABI

```
RevertUnknown(BitArray)
```
Unknown selector, raw data preserved

Values

decode

</>

pub fn decode(
  type_list: List(types.AbiType),
  data: BitArray,
) -> Result(List(types.AbiValue), types.AbiError)

Decode ABI-encoded data given a list of expected types. This is the top-level decoder for function return values or event data.

decode_calldata

</>

pub fn decode_calldata(
  calldata_hex: String,
  entries: List(json.AbiEntry),
) -> Result(DecodedCalldata, types.AbiError)

Decode calldata by matching the 4-byte selector against parsed ABI entries. Returns the function name and decoded argument values.

decode_function_input

</>

pub fn decode_function_input(
  signature: String,
  calldata_hex: String,
) -> Result(List(types.AbiValue), types.AbiError)

Decode calldata given a function signature string like “transfer(address,uint256)”. Computes the selector from the signature and decodes the parameters.

decode_function_output

</>

pub fn decode_function_output(
  output_types_sig: String,
  result_hex: String,
) -> Result(List(types.AbiValue), types.AbiError)

Decode the return value of a function given its output type signature. For example: decode_function_output(“(uint256)”, result_hex)

decode_outputs

</>

pub fn decode_outputs(
  function_entry: json.AbiEntry,
  result_hex: String,
) -> Result(List(types.AbiValue), types.AbiError)

Decode the return value of a function using a parsed ABI entry. Extracts output types from the FunctionEntry and decodes the hex data.

decode_revert

</>

pub fn decode_revert(
  revert_hex: String,
) -> Result(DecodedRevert, types.AbiError)

Decode revert data. Handles standard Error(string) with selector 0x08c379a0, Panic(uint256) with selector 0x4e487b71, and custom errors if an ABI is provided.

decode_revert_with_abi

</>

pub fn decode_revert_with_abi(
  revert_hex: String,
  entries: List(json.AbiEntry),
) -> Result(DecodedRevert, types.AbiError)

Decode revert data, matching custom errors against provided ABI entries.

decode_single

</>

pub fn decode_single(
  type_: types.AbiType,
  data: BitArray,
) -> Result(types.AbiValue, types.AbiError)

Decode a single value of a known type from ABI-encoded data.