[英]Simple smart contract in ethereum remix - ParserError: Expected ';'
[英]Solidity: ParserError: Expected pragma, import directive or contract /interface/library definition
我在編寫簡單合同時也遇到了最新的 solc(0.5.2 版本)和 0.4.25 錯誤
我試過以下步驟
節點 compile.js(下面給出的代碼)
{ contracts: {}, errors: [ ':1:1: ParserError: Expected pragma, import directive or contract /interface/library definition.\\nD:\\\\RND\\\\BlockChain\\\\contracts\\\\Inbox.sol\\n^\\n' ],sourceList: [ '' ],sources: {} }
編譯.js
const path = require('path');
const fs = require('fs');
const solc = require('solc');
const inPath = path.resolve(__dirname,'contracts','Inbox.sol');
const src = fs.readFileSync(inPath,'UTF-8');
const res = solc.compile(inPath, 1);
console.log(res);
收件箱.sol
pragma solidity ^0.4.25;
contract Inbox {
string message;
function Inbox(string passedName) public {
message = passedName;
}
function setMessage(string newMsg) public {
message = newMsg;
}
function getMessage() public view returns(string){
return message;
}
}
代碼在 Remix 上運行良好,對於 0.5.2 版本,我添加了內存標簽以使其在 Remix 上編譯。
ex: function setMessage(string **memory** newMsg)
在編寫簡單合同時,最新的 solc(0.5.2 版本)和 0.4.25 也出現錯誤
我試過以下步驟
node compile.js(下面給出的代碼)
{ contracts: {}, errors: [ ':1:1: ParserError: Expected pragma, import directive or contract /interface/library definition.\\nD:\\\\RND\\\\BlockChain\\\\contracts\\\\Inbox.sol\\n^\\n' ],sourceList: [ '' ],sources: {} }
編譯.js
const path = require('path');
const fs = require('fs');
const solc = require('solc');
const inPath = path.resolve(__dirname,'contracts','Inbox.sol');
const src = fs.readFileSync(inPath,'UTF-8');
const res = solc.compile(inPath, 1);
console.log(res);
收件箱.sol
pragma solidity ^0.4.25;
contract Inbox {
string message;
function Inbox(string passedName) public {
message = passedName;
}
function setMessage(string newMsg) public {
message = newMsg;
}
function getMessage() public view returns(string){
return message;
}
}
代碼在 Remix 上運行良好,對於 0.5.2 版本,我添加了內存標簽以使其在 Remix 上編譯。
ex: function setMessage(string **memory** newMsg)
在編寫簡單合同時,最新的 solc(0.5.2 版本)和 0.4.25 也出現錯誤
我試過以下步驟
node compile.js(下面給出的代碼)
{ contracts: {}, errors: [ ':1:1: ParserError: Expected pragma, import directive or contract /interface/library definition.\\nD:\\\\RND\\\\BlockChain\\\\contracts\\\\Inbox.sol\\n^\\n' ],sourceList: [ '' ],sources: {} }
編譯.js
const path = require('path');
const fs = require('fs');
const solc = require('solc');
const inPath = path.resolve(__dirname,'contracts','Inbox.sol');
const src = fs.readFileSync(inPath,'UTF-8');
const res = solc.compile(inPath, 1);
console.log(res);
收件箱.sol
pragma solidity ^0.4.25;
contract Inbox {
string message;
function Inbox(string passedName) public {
message = passedName;
}
function setMessage(string newMsg) public {
message = newMsg;
}
function getMessage() public view returns(string){
return message;
}
}
代碼在 Remix 上運行良好,對於 0.5.2 版本,我添加了內存標簽以使其在 Remix 上編譯。
ex: function setMessage(string **memory** newMsg)
在編寫簡單合同時,最新的 solc(0.5.2 版本)和 0.4.25 也出現錯誤
我試過以下步驟
node compile.js(下面給出的代碼)
{ contracts: {}, errors: [ ':1:1: ParserError: Expected pragma, import directive or contract /interface/library definition.\\nD:\\\\RND\\\\BlockChain\\\\contracts\\\\Inbox.sol\\n^\\n' ],sourceList: [ '' ],sources: {} }
編譯.js
const path = require('path');
const fs = require('fs');
const solc = require('solc');
const inPath = path.resolve(__dirname,'contracts','Inbox.sol');
const src = fs.readFileSync(inPath,'UTF-8');
const res = solc.compile(inPath, 1);
console.log(res);
收件箱.sol
pragma solidity ^0.4.25;
contract Inbox {
string message;
function Inbox(string passedName) public {
message = passedName;
}
function setMessage(string newMsg) public {
message = newMsg;
}
function getMessage() public view returns(string){
return message;
}
}
代碼在 Remix 上運行良好,對於 0.5.2 版本,我添加了內存標簽以使其在 Remix 上編譯。
ex: function setMessage(string **memory** newMsg)
在編寫簡單合同時,最新的 solc(0.5.2 版本)和 0.4.25 也出現錯誤
我試過以下步驟
node compile.js(下面給出的代碼)
{ contracts: {}, errors: [ ':1:1: ParserError: Expected pragma, import directive or contract /interface/library definition.\\nD:\\\\RND\\\\BlockChain\\\\contracts\\\\Inbox.sol\\n^\\n' ],sourceList: [ '' ],sources: {} }
編譯.js
const path = require('path');
const fs = require('fs');
const solc = require('solc');
const inPath = path.resolve(__dirname,'contracts','Inbox.sol');
const src = fs.readFileSync(inPath,'UTF-8');
const res = solc.compile(inPath, 1);
console.log(res);
收件箱.sol
pragma solidity ^0.4.25;
contract Inbox {
string message;
function Inbox(string passedName) public {
message = passedName;
}
function setMessage(string newMsg) public {
message = newMsg;
}
function getMessage() public view returns(string){
return message;
}
}
代碼在 Remix 上運行良好,對於 0.5.2 版本,我添加了內存標簽以使其在 Remix 上編譯。
ex: function setMessage(string **memory** newMsg)
檢查您的 .sol 文件是否以沒有 BOM 的 UTF-8 編碼。
否則,轉換為 UTF-8。
我使用 Notepad++ 來做到這一點。
編碼 > 轉換為 UTF-8
當您在程序的語法中出錯時,就會發生解析錯誤。 我遇到了同樣的錯誤,因為
contract ERC721Enumerable is ERC721{
function totalSupply() public view returns (uint256){
return _allTokens.length;
}
// THIS WAS THE REASON
// this was closing contract and then outside of the contract i had function
}
function _mint(address to, uint256 tokenId) internal override {
}
}
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