Split monolithic encoder/decoder

[axic]

Each type should have a simple class with:

• encode (input: variable type; output: Buffer)
• decode (input: Buffer; output: variable type)
• isValid? to check if a parameter can be encoded as the given type

[axic]

@yann300 @chriseth any comments/ideas on designing this?

The main goal is to have a more flexible interface (and the ability to decode/encode more complex types) as well as to avoid code duplication in ethereum/remix#104.

Note, this library already has support for the ABI encoding as well as the packed Solidity encoding.

[chriseth]

I think this is too simple, because e.g. arrays need access to the current base offset.

In general, though, I think that we should go for an object-oriented approach like that, yes.

At some point (probably together with the API documentation of this library) we should als odefine the mapping between ABI types and javascript types.

[holgerd77]

What is the status of this issue?