solang 0.1.8

# solang - A Solidity to wasm compiler written in rust

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Welcome to Solang, a new Solidity compiler written in rust which uses
llvm as the compiler backend. As a result, only the compiler front end
needs to be written in rust.

Solang targets Substrate, Solana, ewasm, and Sawtooth.
Solang is source compatible with Solidity 0.7, with some caveats due to
differences in the underlying blockchain.

Solang is under active development right now, and has
[extensive documentation](https://solang.readthedocs.io/en/latest/).

## Simple example

First build [Solang](https://solang.readthedocs.io/en/latest/installing.html)
or use the docker image, then write the following to flipper.sol:

```solidity
contract flipper {
	bool private value;

	constructor(bool initvalue) public {
		value = initvalue;
	}

	function flip() public {
		value = !value;
	}

	function get() public view returns (bool) {
		return value;
	}
}
```

Now run:

```bash
solang --target substrate flipper.sol
```

Alternatively if you want to use the solang docker image, run:

```
docker run --rm -it -v $(pwd):/sources hyperledgerlabs/solang -v -o /sources  --target substrate /sources/flipper.sol
```
You will have a file called flipper.contract. You can use this directly in
the [Polkadot UI](https://substrate.dev/substrate-contracts-workshop/#/0/deploy-contract),
as if your smart contract was written using ink!.

## License

[Apache 2.0](LICENSE)