fix(json-abi): fallback to tuple types for nested params in to_sol
#354
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Motivation
Fixes #349
Solution
When the param type is
tuple
ortuple[N?]...
, emit a tuple type(T, U, V, ...)
instead of just the word "tuple" which trips upsyn-solidity
.This can only happen in Solc 0.4.X ABI.
This is not actually valid Solidity, but it works in
sol!
and with other more lenient parser like inforge fmt
.PR Checklist