Reduce the contract size : split submoloch contract to smaller contracts.

[hychen]

The size of submoloch is exceeded the limitation.

Possible Solutions

1 split submoloch to three small contracts,

1. guild :: to manage memberships;
2. grant :: to process proposals.
3. pool :: to transfer the funds

2 shrinking wasm size

1. Experiment wasm-opt optimization options suggested in (Experiment with some wasm-opt options use-ink/cargo-contract#110)
2. Experiment methodologies suggested in https://github.com/johnthagen/min-sized-rust

3 Remove erc20 contract from submoloch build dependency. Use erc20-trait instead.

4 Convert error strings to custom Error types.

Leave client side decide which error strings should be printed.

5. Use types that take smaller spaces. (e.x.: u128 -> u8)

[hychen]

Working on
https://github.com/hychen/submoloch/tree/split_contract

[hychen]

option 3 and does not help. gonna hack cargo-contract to add some useful options for reducing wasm-size.

[hychen]

HashMap is way more expensive than I thought.