Unable to decode Arrays of Structs

antazoey commented 2 years ago

If this is a bug report, please fill in the following sections. If this is a feature request, delete and describe what you would like with examples.

What was wrong?

I have a function in a smart-contract that returns an Array of struct types. But, I was unable to decode it.

Code that produced the error

Method example:

@view
@external
def getStructList() -> DynArray[NestedStruct1, 2]:
    return [
        NestedStruct1({t: MyStruct({a: msg.sender, b: block.prevhash}), foo: 1}),
        NestedStruct1({t: MyStruct({a: msg.sender, b: block.prevhash}), foo: 2})
    ]

Example Python Code to reproduce (Note: If need more info about how I crafted the transaction, let me know. I am using ape)

raw_return_data = HexBytes('0x0000000000000000000000001e59ce931b4cfea3fe4b875411e280e173cb7a9c823cdd42013e4dcc999143ac0f75bcdc001b54c977d0e0d2ec78d9fa6d2ea9e000000000000000000000000000000000000000000000000000000000000000010000000000000000000000001e59ce931b4cfea3fe4b875411e280e173cb7a9c823cdd42013e4dcc999143ac0f75bcdc001b54c977d0e0d2ec78d9fa6d2ea9e00000000000000000000000000000000000000000000000000000000000000002')

output_types_from_method_abi = ['tuple[2]']

# The following line fails with: NoEntriesFound: No matching entries for 'tuple' in decoder registry
decode_abi(output_types_from_method_abi, raw_return_data)

Full error output

eth_abi.exceptions.NoEntriesFound: No matching entries for 'tuple' in decoder registry

Expected Result

list of tuples probably, like this:

[(0, 1), (1,2)]

Environment

# run this:
$ python -m eth_utils

aiohttp==3.8.1
aiosignal==1.2.0
alabaster==0.7.12
-e git+ssh://git@github.com/unparalleled-js/ape-alchemy.git@39e6a66e30fd2659768571ddbba293cac6cdc9da#egg=ape_alchemy
-e git+ssh://git@github.com/unparalleled-js/ape-cairo.git@7624c474141ee050c2276f8be1418585f86ee635#egg=ape_cairo
-e git+ssh://git@github.com/unparalleled-js/ape-etherscan.git@a970233426c6ac4793340077a1105800fa1f0747#egg=ape_etherscan
-e git+ssh://git@github.com/ApeWorX/ape-fantom.git@5bde3bbd32a5af3c96b737b611d29de9f65591e5#egg=ape_fantom
-e git+ssh://git@github.com/unparalleled-js/ape-foundry.git@2ffdf188fade524effac3d620ab71f7cdd3b53b0#egg=ape_foundry
-e git+ssh://git@github.com/unparalleled-js/ape-hardhat.git@43e3810c68b052f458abadeefa6b00f1ba7413de#egg=ape_hardhat
ape-infura==0.2.0
-e git+ssh://git@github.com/ApeWorX/ape-ledger.git@e514bf2cd3204515c37a7d4223a8f64088996097#egg=ape_ledger
ape-solidity==0.2.2
-e git+ssh://git@github.com/unparalleled-js/ape-starknet.git@acaae815c321b7b468cdfd451ffda0dc9ba8c887#egg=ape_starknet
-e git+ssh://git@github.com/unparalleled-js/ape-vyper.git@96a22e67728489511865e0c1ee712b3394b133c2#egg=ape_vyper
appnope==0.1.2
argcomplete==1.12.3
asgiref==3.5.0
async-timeout==4.0.2
asynctest==0.13.0
attrs==21.4.0
autoflake==1.4
Babel==2.9.1
backcall==0.2.0
backports.cached-property==1.0.1
bandit==1.7.4
base58==2.1.1
bitarray==1.2.2
black==22.3.0
bleach==4.1.0
bump2version==1.0.1
cached-property==1.5.2
cachetools==5.0.0
cairo-lang==0.8.1
certifi==2021.10.8
cffi==1.15.0
cfgv==3.3.1
charset-normalizer==2.0.11
click==8.1.3
click-default-group==1.2.2
colorama==0.4.4
commitizen==2.19.0
commonmark==0.9.1
coverage==6.3.1
cytoolz==0.11.2
dataclassy==0.10.4
decli==0.5.2
decorator==5.1.1
Deprecated==1.2.13
dill==0.3.4
distlib==0.3.4
docopt==0.6.2
docutils==0.16
ecdsa==0.17.0
ECPy==1.2.5
eip712==0.1.0
eth-abi==2.1.1
eth-account==0.5.7
-e git+ssh://git@github.com/unparalleled-js/ape.git@b7a0784b16e5f00046998ae3ec2d2d6ff623c57a#egg=eth_ape
eth-bloom==1.0.4
eth-hash==0.3.2
eth-keyfile==0.5.1
eth-keys==0.3.4
eth-rlp==0.2.1
eth-tester==0.6.0b6
eth-typing==2.3.0
eth-utils==1.10.0
ethpm-types==0.2.1
-e git+ssh://git@github.com/unparalleled-js/evm-trace.git@e1c65b8a367ff6f5049f209b7f1592911c3e5695#egg=evm_trace
execnet==1.9.0
fastecdsa==2.2.3
filelock==3.4.2
flake8==3.9.2
flake8-breakpoint==1.1.0
flake8-plugin-utils==1.3.2
flake8-print==4.0.0
Flask==2.0.3
Flask-Cors==3.0.10
frozendict==1.2
frozenlist==1.3.0
future==0.18.2
gitdb==4.0.9
GitPython==3.1.27
greenlet==0.4.17
hexbytes==0.2.2
hidapi==0.10.1
hypothesis==6.36.1
hypothesis-jsonschema==0.19.0
identify==2.4.8
idna==3.3
imagesize==1.3.0
importlib-metadata==4.10.1
incremental==21.3.0
iniconfig==1.1.1
ipdb==0.13.9
ipfshttpclient==0.8.0a2
ipython==7.32.0
isort==5.10.1
itsdangerous==2.1.0
jedi==0.18.1
Jinja2==3.0.3
jsonschema==3.2.0
keyring==23.5.0
lark-parser==0.12.0
ledgerblue==0.1.41
ledgereth @ file:///Users/jules/PycharmProjects/ledger-eth-lib
lru-dict==1.1.7
markdown-it-py==2.0.1
MarkupSafe==2.0.1
marshmallow==3.14.1
marshmallow-dataclass==8.5.3
marshmallow-enum==1.5.1
marshmallow-oneofschema==3.0.1
matplotlib-inline==0.1.3
mccabe==0.6.1
mdit-py-plugins==0.3.0
mdurl==0.1.0
meinheld==1.0.2
mpmath==1.2.1
multiaddr==0.0.9
multidict==6.0.2
mypy==0.950
mypy-extensions==0.4.3
myst-parser==0.16.0
netaddr==0.8.0
nodeenv==1.6.0
numpy==1.21.5
packaging==20.9
pandas==1.3.5
pandas-stubs==1.2.0.49
parsimonious==0.8.1
parso==0.8.3
pathspec==0.9.0
pbr==5.8.1
pexpect==4.8.0
pickleshare==0.7.5
Pillow==9.0.1
pipdeptree==2.2.1
pkginfo==1.8.2
platformdirs==2.4.1
pluggy==0.13.1
pockets==0.9.1
pre-commit==2.17.0
prometheus-client==0.13.1
prompt-toolkit==3.0.26
protobuf==3.19.4
ptyprocess==0.7.0
py==1.11.0
py-ecc==4.1.0
py-evm==0.5.0a3
py-geth==3.7.0
py-solc-x==1.1.1
pycodestyle==2.7.0
pycparser==2.21
pycryptodome==3.14.1
pycryptodomex==3.14.1
pydantic==1.9.0
pyethash==0.1.27
pyflakes==2.3.1
pygit2==1.8.0
PyGithub==1.55
Pygments==2.11.2
PyJWT==2.3.0
PyNaCl==1.5.0
pyparsing==3.0.7
pyrsistent==0.18.1
pysha3==1.0.2
pytest==6.2.5
pytest-asyncio==0.18.2
pytest-cov==3.0.0
pytest-forked==1.4.0
pytest-mock==3.7.0
pytest-watch==4.2.0
pytest-xdist==2.5.0
python-dateutil==2.8.2
python-u2flib-host==3.0.3
pytz==2021.3
pyupgrade==2.31.1
PyYAML==5.4.1
questionary==1.10.0
readme-renderer==32.0
requests==2.27.1
requests-toolbelt==0.9.1
rfc3986==2.0.0
rich==10.16.2
rlp==2.0.1
semantic-version==2.8.5
setuptools-scm==6.4.2
singledispatchmethod==1.0
six==1.16.0
smmap==5.0.0
snowballstemmer==2.2.0
sortedcontainers==2.4.0
Sphinx==3.5.4
sphinx-click==3.1.0
sphinx-rtd-theme==0.5.2
sphinxcontrib-applehelp==1.0.2
sphinxcontrib-devhelp==1.0.2
sphinxcontrib-htmlhelp==2.0.0
sphinxcontrib-jsmath==1.0.1
sphinxcontrib-napoleon==0.7
sphinxcontrib-qthelp==1.0.3
sphinxcontrib-serializinghtml==1.1.5
starknet-devnet==0.1.23
starknet.py==0.2.2a0
stevedore==3.5.0
sympy==1.9
termcolor==1.1.0
tokenize-rt==4.2.1
tokenlists==0.1.1
toml==0.10.2
tomli==1.2.3
tomlkit==0.9.0
toolz==0.11.2
towncrier==19.9.0
tqdm==4.62.3
traitlets==5.1.1
trie==2.0.0a5
twine==3.8.0
typed-ast==1.5.2
typeguard==2.13.3
types-pkg-resources==0.1.3
types-PyYAML==6.0.4
types-requests==2.27.15
types-setuptools==57.4.11
types-urllib3==1.26.9
typing-extensions==3.10.0.2
typing-inspect==0.7.1
urllib3==1.26.8
varint==1.0.2
virtualenv==20.13.0
vvm==0.1.0
watchdog==2.1.6
wcwidth==0.2.5
web3==5.29.0
webencodings==0.5.1
websocket-client==1.3.1
websockets==9.1
Werkzeug==2.0.3
wrapt==1.13.3
yarl==1.7.2
zipp==3.7.0

How can it be fixed?

I am not sure!

antazoey commented 2 years ago

closing as I realize I just need to convert the tuple

hustnn commented 2 years ago

Does it support decode on the data for type mystruct[] with unknown length

struct myStruct { address, uint256, address }

blksith0 commented 1 year ago

closing as I realize I just need to convert the tuple

meaning?

antazoey commented 1 year ago

meaning?

I don't fully remembers, probably had to go from tuple[2] to (uint256,address)[2] or something like that, using the ABI structure. The linked PR a few comments up probably contains the exact answer but that is already kinda outdated code

ethereum / eth-abi