Solidity2JS

• A compiler that compiles Smart Contract written in Solidity to Javascript - a language that almost developers know and can use quickly.

Just npm start, open http://localhost:3000 to view it in the browser,

paste your Solidity code in the left area and Hot Dog, the result appears.

Then, you need to manually modify the Generated JavaScript code results to function properly.

1. We map Contract in Solidity to Class in Javascript. So we need to use this pointer to reference state of class.
2. The default decorator of class method is @view, depends on your code, you may want to change it to @transaction.

Example:

pragma solidity ^0.4.0;

contract SimpleStorage {
    uint storedData;

    function set(uint x) public {
        storedData = x;
    }

    function get() public view returns (uint) {
        return storedData;
    }
}

This is a super simple solidity smart contract. Here is the code you would acquire after using the compiler:

//Pragma solidity version ^0.4.0
@contract
class SimpleStorage {
  @state
  #storedData;
  
  @view
  set(x) {
    storedData = x;
  }

  @view
  get() {
    return storedData;
  }
}

1. It is clearly seen that there is a state storedData, it is referenced by set() and get() method down below. So we need to add the this pointer: storedData -> this.storedData
2. Because the set() method change the state of the contract, it should not be decorated with @view: @view -> @transaction
3. Put it all together, we are good to go:

@contract
class SimpleStorage {
  @state
  #storedData;
  
  @transaction
  set(x) {
    this.storedData = x;
  }

  @view
  get() {
    return this.storedData;
  }
}

CURRENT PROCESS:

Solidity SUPPORTTED:

• contract, interface.
• state property, variable inside function.
• function, state mutability, modifier.
• array.
• common opertator.

Solidity not yet SUPPORTTED:

• map.
• inheritance.
• more...

THANKS

---

• We use solidity-parser-antlr to parse the Solidity code and get the Solidity AST (Abstract Syntax Tree).
• We fork the ASTexplorer website for easy using.