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Decode

Decode#

nethermind.starknet_abi.decode.decode_core_type(decode_type: StarknetCoreType, calldata: list[int]) → str | int | bool#

Decodes Calldata using Starknet Core Type. Takes in two parameters, a StarknetCoreType, and a mutable reference to a calldata array. When decoding, calldata is popped off the top of the calldata array. This reference to the calldata array is recursively passed between type decoders, so this array is modified during decoding
Parameters:

  • decode_type – Starknet Core Type to Decode

  • calldata – Mutable reference to calldata array. WARN – Array is Consumed by Method

nethermind.starknet_abi.decode.decode_from_params(params: Sequence[AbiParameter], calldata: list[int]) → dict[str, Any]#

Decodes Calldata using AbiParameters, which have names and types

Warning

Calldata list is consumed during decoding, as calldata is recursively popped off the top of the calldata throughout the decoding process

>>> from nethermind.starknet_abi.decode import AbiParameter, decode_from_params, StarknetCoreType
>>> decode_from_params(
...     [AbiParameter("a", StarknetCoreType.U32), AbiParameter("b", StarknetCoreType.U32)],
...     [123456, 654321]
... )
{'a': 123456, 'b': 654321}
Parameters:

  • params – Sequence of AbiParameters

  • calldata – Mutable calldata Array

Returns:

Dict mapping Parameter names to decoded types

nethermind.starknet_abi.decode.decode_from_types(types: Sequence[StarknetCoreType | StarknetOption | StarknetTuple | StarknetArray | StarknetStruct | StarknetEnum], calldata: list[int]) → list[Any]#

Decodes calldata array using a list of StarknetTypes.

Warning

The calldata array passed to decode_from_types is mutated during decoding. Calldata is recursively popped off the stack as decoding occurs
Parameters:

  • types – Sequence of StarknetType to decode

  • calldata – Mutable Array of Calldata

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