5. Implement contracts abi abstraction and contract compilation (solc) about web3swift HOT 7 OPEN

@Biboran/z please, pay attention to this issue

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@rockfridrich could you elaborate on what does this mean?

The data of a variable or array element is not interleaved with other data and it is relocatable, i.e. it only uses relative “addresses”

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For future reference: structs are encoded as tuples.
update: this is not currently possible.

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enum is not a part of ABI as of now and is converted to the minimally needed capacity uint

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@bashalex specification on tuple (X) encoding says:

enc(X) = head(X(1)) ... head(X(k-1)) tail(X(0)) ... tail(X(k-1))

There is tail(X(0)) but there is no head(X(0)). Where does the head(X(0)) go? Should you drop it or is it just a typo in the specification?

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@bashalex there is a similar issue with specification on variable-length array vs fixed-length array.

For fixed-length it is:

enc(X) = enc((X[0], ..., X[k-1]))

and for variable-length it is:

enc(X) = enc(k) enc([X[1], ..., X[k]])

is it supposed to be X[1] to X[k]?

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As of now the following constraints also apply:

1. Structures cannot be an external dependency
2. There is no such type as tuple of tuples.

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