openethereum/js/src/api/util/encode.js

// Copyright 2015-2017 Parity Technologies (UK) Ltd.
// This file is part of Parity.

// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with Parity.  If not, see <http://www.gnu.org/licenses/>.

import Abi from '~/abi';
import Func from '~/abi/spec/function';

export function encodeMethodCallAbi (methodAbi = {}, values = []) {
  const func = new Func(methodAbi);
  const tokens = Abi.encodeTokens(func.inputParamTypes(), values);
  const call = func.encodeCall(tokens);

  return `0x${call}`;
}

export function abiEncode (methodName, inputTypes, data) {
  const result = encodeMethodCallAbi({
    name: methodName || '',
    type: 'function',
    inputs: inputTypes.map((type) => {
      return { type };
    })
  }, data);

  return result;
}