【2022 元宇宙基础NFT之Solidity OOP编程第05篇】Solidity HelloWorld合约编写、编译、部署

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一、HelloWorld合约编写

打开Atom新建一个文件HelloWorld.sol,编写如下合约代码。

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.7.0 <0.9.0;

contract HelloWorld {
  function helloWorld() external pure returns (string memory) {
    return "Hello, World!";
  }
}

二、Remix-IDE新建`HelloWorld`合约

打开Remix-IDE，新建HelloWorld.sol文件，将Atom里面编辑好的HelloWorld合约代码拷贝到里面，如下图所示例。

三、编译

四、查看字节码和ABI数据

BYTECODE

{
    "functionDebugData": {},
    "generatedSources": [],
    "linkReferences": {},
    "object": "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",
    "opcodes": "PUSH1 0x80 PUSH1 0x40 MSTORE CALLVALUE DUP1 ISZERO PUSH2 0x10 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x17C DUP1 PUSH2 0x20 PUSH1 0x0 CODECOPY PUSH1 0x0 RETURN INVALID PUSH1 0x80 PUSH1 0x40 MSTORE CALLVALUE DUP1 ISZERO PUSH2 0x10 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH1 0x4 CALLDATASIZE LT PUSH2 0x2B JUMPI PUSH1 0x0 CALLDATALOAD PUSH1 0xE0 SHR DUP1 PUSH4 0xC605F76C EQ PUSH2 0x30 JUMPI JUMPDEST PUSH1 0x0 DUP1 REVERT JUMPDEST PUSH2 0x38 PUSH2 0x4E JUMP JUMPDEST PUSH1 0x40 MLOAD PUSH2 0x45 SWAP2 SWAP1 PUSH2 0x124 JUMP JUMPDEST PUSH1 0x40 MLOAD DUP1 SWAP2 SUB SWAP1 RETURN JUMPDEST PUSH1 0x60 PUSH1 0x40 MLOAD DUP1 PUSH1 0x40 ADD PUSH1 0x40 MSTORE DUP1 PUSH1 0xD DUP2 MSTORE PUSH1 0x20 ADD PUSH32 0x48656C6C6F2C20576F726C642100000000000000000000000000000000000000 DUP2 MSTORE POP SWAP1 POP SWAP1 JUMP JUMPDEST PUSH1 0x0 DUP2 MLOAD SWAP1 POP SWAP2 SWAP1 POP JUMP JUMPDEST PUSH1 0x0 DUP3 DUP3 MSTORE PUSH1 0x20 DUP3 ADD SWAP1 POP SWAP3 SWAP2 POP POP JUMP JUMPDEST PUSH1 0x0 JUMPDEST DUP4 DUP2 LT ISZERO PUSH2 0xC5 JUMPI DUP1 DUP3 ADD MLOAD DUP2 DUP5 ADD MSTORE PUSH1 0x20 DUP2 ADD SWAP1 POP PUSH2 0xAA JUMP JUMPDEST DUP4 DUP2 GT ISZERO PUSH2 0xD4 JUMPI PUSH1 0x0 DUP5 DUP5 ADD MSTORE JUMPDEST POP POP POP POP JUMP JUMPDEST PUSH1 0x0 PUSH1 0x1F NOT PUSH1 0x1F DUP4 ADD AND SWAP1 POP SWAP2 SWAP1 POP JUMP JUMPDEST PUSH1 0x0 PUSH2 0xF6 DUP3 PUSH2 0x8B JUMP JUMPDEST PUSH2 0x100 DUP2 DUP6 PUSH2 0x96 JUMP JUMPDEST SWAP4 POP PUSH2 0x110 DUP2 DUP6 PUSH1 0x20 DUP7 ADD PUSH2 0xA7 JUMP JUMPDEST PUSH2 0x119 DUP2 PUSH2 0xDA JUMP JUMPDEST DUP5 ADD SWAP2 POP POP SWAP3 SWAP2 POP POP JUMP JUMPDEST PUSH1 0x0 PUSH1 0x20 DUP3 ADD SWAP1 POP DUP2 DUP2 SUB PUSH1 0x0 DUP4 ADD MSTORE PUSH2 0x13E DUP2 DUP5 PUSH2 0xEB JUMP JUMPDEST SWAP1 POP SWAP3 SWAP2 POP POP JUMP INVALID LOG2 PUSH5 0x6970667358 0x22 SLT KECCAK256 0xE6 0xD9 SHL NOT SWAP4 CALLDATACOPY CHAINID 0xFB 0xBB JUMP 0xC4 0xED SWAP15 0x2A 0xA8 DIV ADDRESS RETURNDATACOPY 0x4C 0xDC PUSH1 0xFA 0xB2 0xDF EXP 0xBB RETURNDATACOPY 0xAF 0xEA 0xC 0xE3 DUP13 PUSH5 0x736F6C6343 STOP ADDMOD SIGNEXTEND STOP CALLER ",
    "sourceMap": "70:119:0:-:0;;;;;;;;;;;;;;;;;;;"
}

[
    {
        "inputs": [],
        "name": "helloWorld",
        "outputs": [
            {
                "internalType": "string",
                "name": "",
                "type": "string"
            }
        ],
        "stateMutability": "pure",
        "type": "function"
    }
]