Solidity compiler - problem with HelloWorld smart contract
0
Im trying to run my first HelloWorld smart contract on the Enthereum network. This is my HelloWorld.sol contract.
pragma solidity ^0.5.0;
contract HelloWorld {
bytes32 message;
constructor (bytes32 myMessage) public {
message = myMessage;
}
function getMessage() public returns(bytes32) {
return message;
}
}
When I try to build this using solcjs HelloWorld.sol --bin, there is just one Warning and no errors. I have installed web3 and solc using npm. When I run this on a node
var solc = require('solc');
var x = fs.readFileSync('./HelloWorld.sol').toString();
var compiledContract = solc.compile(x);
the compiledContractcontains this:
'{"errors":[{"component":"general","formattedMessage":"* Line 1, Column 1\n Syntax error: value, object or array expected.\n* Line 1, Column 2\n Extra non-whitespace after JSON value.\n","message":"* Line 1, Column 1\n Syntax error: value, object or array expected.\n* Line 1, Column 2\n Extra non-whitespace after JSON value.\n","severity":"error","type":"JSONError"}]}'
Where is the problem?
node.js ethereum solidity smartcontracts
asked Nov 24 '18 at 18:10
Banana CakeBanana Cake
909
add a comment |
0
Im trying to run my first HelloWorld smart contract on the Enthereum network. This is my HelloWorld.sol contract.
pragma solidity ^0.5.0;
contract HelloWorld {
bytes32 message;
constructor (bytes32 myMessage) public {
message = myMessage;
}
function getMessage() public returns(bytes32) {
return message;
}
}
When I try to build this using solcjs HelloWorld.sol --bin, there is just one Warning and no errors. I have installed web3 and solc using npm. When I run this on a node
var solc = require('solc');
var x = fs.readFileSync('./HelloWorld.sol').toString();
var compiledContract = solc.compile(x);
the compiledContractcontains this:
'{"errors":[{"component":"general","formattedMessage":"* Line 1, Column 1\n Syntax error: value, object or array expected.\n* Line 1, Column 2\n Extra non-whitespace after JSON value.\n","message":"* Line 1, Column 1\n Syntax error: value, object or array expected.\n* Line 1, Column 2\n Extra non-whitespace after JSON value.\n","severity":"error","type":"JSONError"}]}'
Where is the problem?
node.js ethereum solidity smartcontracts
asked Nov 24 '18 at 18:10
Banana CakeBanana Cake
909
Can you try with an earlier version of the solidity compiler?
– nikos fotiadis
Nov 24 '18 at 20:28
If I write pragma solidity ^0.4.x it throws error that I have version 0.5.0
– Banana Cake
Nov 24 '18 at 21:23
I think you need to change the version of the compiler you have installed as well.
– nikos fotiadis
Nov 24 '18 at 21:34
I changed the version to 0.4.18 but there is the same problem.
– Banana Cake
Nov 24 '18 at 22:39
add a comment |
0
0
0
1
Im trying to run my first HelloWorld smart contract on the Enthereum network. This is my HelloWorld.sol contract.
pragma solidity ^0.5.0;
contract HelloWorld {
bytes32 message;
constructor (bytes32 myMessage) public {
message = myMessage;
}
function getMessage() public returns(bytes32) {
return message;
}
}
When I try to build this using solcjs HelloWorld.sol --bin, there is just one Warning and no errors. I have installed web3 and solc using npm. When I run this on a node
var solc = require('solc');
var x = fs.readFileSync('./HelloWorld.sol').toString();
var compiledContract = solc.compile(x);
the compiledContractcontains this:
'{"errors":[{"component":"general","formattedMessage":"* Line 1, Column 1\n Syntax error: value, object or array expected.\n* Line 1, Column 2\n Extra non-whitespace after JSON value.\n","message":"* Line 1, Column 1\n Syntax error: value, object or array expected.\n* Line 1, Column 2\n Extra non-whitespace after JSON value.\n","severity":"error","type":"JSONError"}]}'
Where is the problem?
node.js ethereum solidity smartcontracts
asked Nov 24 '18 at 18:10
Banana CakeBanana Cake
909
Im trying to run my first HelloWorld smart contract on the Enthereum network. This is my HelloWorld.sol contract.
pragma solidity ^0.5.0;
contract HelloWorld {
bytes32 message;
constructor (bytes32 myMessage) public {
message = myMessage;
}
function getMessage() public returns(bytes32) {
return message;
}
}
When I try to build this using solcjs HelloWorld.sol --bin, there is just one Warning and no errors. I have installed web3 and solc using npm. When I run this on a node
var solc = require('solc');
var x = fs.readFileSync('./HelloWorld.sol').toString();
var compiledContract = solc.compile(x);
the compiledContractcontains this:
'{"errors":[{"component":"general","formattedMessage":"* Line 1, Column 1\n Syntax error: value, object or array expected.\n* Line 1, Column 2\n Extra non-whitespace after JSON value.\n","message":"* Line 1, Column 1\n Syntax error: value, object or array expected.\n* Line 1, Column 2\n Extra non-whitespace after JSON value.\n","severity":"error","type":"JSONError"}]}'
Where is the problem?
node.js ethereum solidity smartcontracts
node.js ethereum solidity smartcontracts
asked Nov 24 '18 at 18:10
Banana CakeBanana Cake
909
asked Nov 24 '18 at 18:10
Banana CakeBanana Cake
909
asked Nov 24 '18 at 18:10
Banana CakeBanana Cake
909
asked Nov 24 '18 at 18:10
Banana CakeBanana Cake
909
asked Nov 24 '18 at 18:10
Banana CakeBanana Cake
909
909
Can you try with an earlier version of the solidity compiler?
– nikos fotiadis
Nov 24 '18 at 20:28
If I write pragma solidity ^0.4.x it throws error that I have version 0.5.0
– Banana Cake
Nov 24 '18 at 21:23
I think you need to change the version of the compiler you have installed as well.
– nikos fotiadis
Nov 24 '18 at 21:34
I changed the version to 0.4.18 but there is the same problem.
– Banana Cake
Nov 24 '18 at 22:39
add a comment |
Can you try with an earlier version of the solidity compiler?
– nikos fotiadis
Nov 24 '18 at 20:28
If I write pragma solidity ^0.4.x it throws error that I have version 0.5.0
– Banana Cake
Nov 24 '18 at 21:23
I think you need to change the version of the compiler you have installed as well.
– nikos fotiadis
Nov 24 '18 at 21:34
I changed the version to 0.4.18 but there is the same problem.
– Banana Cake
Nov 24 '18 at 22:39
Can you try with an earlier version of the solidity compiler?
– nikos fotiadis
Nov 24 '18 at 20:28
Can you try with an earlier version of the solidity compiler?
– nikos fotiadis
Nov 24 '18 at 20:28
If I write pragma solidity ^0.4.x it throws error that I have version 0.5.0
– Banana Cake
Nov 24 '18 at 21:23
If I write pragma solidity ^0.4.x it throws error that I have version 0.5.0
– Banana Cake
Nov 24 '18 at 21:23
I think you need to change the version of the compiler you have installed as well.
– nikos fotiadis
Nov 24 '18 at 21:34
I think you need to change the version of the compiler you have installed as well.
– nikos fotiadis
Nov 24 '18 at 21:34
I changed the version to 0.4.18 but there is the same problem.
– Banana Cake
Nov 24 '18 at 22:39
I changed the version to 0.4.18 but there is the same problem.
– Banana Cake
Nov 24 '18 at 22:39
add a comment |
1 Answer
1
active
oldest
votes
1
The problem was, that you I can not put raw solidity smart contract into solc.compile() function. There must be Compiler Standard Input JSON. Based on my another thread I found this solution:
> var Web3 = require('web3');
> var solc = require('solc');
> var web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'));
> var CONTRACT_FILE = 'HelloWorld.sol'
> var content =fs.readFileSync(CONTRACT_FILE).toString()
> var input = {
language: 'Solidity',
sources: {
[CONTRACT_FILE]: {
content: content
}
},
settings: {
outputSelection: {
'*': {
'*': ['*']
}
}
}
}
> var compiled = solc.compile(JSON.stringify(input))
> var output = JSON.parse(compiled)
> var abi = output.contracts[CONTRACT_FILE]['HelloWorld'].abi
> var bytecode = output.contracts[CONTRACT_FILE]['HelloWorld'].evm.bytecode.object
> var HelloWorld = new web3.eth.Contract(abi);
> var HelloWorldTx = HelloWorld.deploy({data: bytecode, arguments: [web3.utils.asciiToHex('Hello')]});
> web3.eth.estimateGas(HelloWorldTx).then(console.log); //this does not work, because it can not connect to the localhost:8545. I don't know why.
> HelloWorldTx.send({from: '0x99d54a45f2cd3b9c6443d623003416aaf944338e', gas: 1000000}).then(console.log);
answered Dec 16 '18 at 17:35
Banana CakeBanana Cake
909
add a comment |
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1 Answer
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votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
The problem was, that you I can not put raw solidity smart contract into solc.compile() function. There must be Compiler Standard Input JSON. Based on my another thread I found this solution:
> var Web3 = require('web3');
> var solc = require('solc');
> var web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'));
> var CONTRACT_FILE = 'HelloWorld.sol'
> var content =fs.readFileSync(CONTRACT_FILE).toString()
> var input = {
language: 'Solidity',
sources: {
[CONTRACT_FILE]: {
content: content
}
},
settings: {
outputSelection: {
'*': {
'*': ['*']
}
}
}
}
> var compiled = solc.compile(JSON.stringify(input))
> var output = JSON.parse(compiled)
> var abi = output.contracts[CONTRACT_FILE]['HelloWorld'].abi
> var bytecode = output.contracts[CONTRACT_FILE]['HelloWorld'].evm.bytecode.object
> var HelloWorld = new web3.eth.Contract(abi);
> var HelloWorldTx = HelloWorld.deploy({data: bytecode, arguments: [web3.utils.asciiToHex('Hello')]});
> web3.eth.estimateGas(HelloWorldTx).then(console.log); //this does not work, because it can not connect to the localhost:8545. I don't know why.
> HelloWorldTx.send({from: '0x99d54a45f2cd3b9c6443d623003416aaf944338e', gas: 1000000}).then(console.log);
answered Dec 16 '18 at 17:35
Banana CakeBanana Cake
909
add a comment |
1
The problem was, that you I can not put raw solidity smart contract into solc.compile() function. There must be Compiler Standard Input JSON. Based on my another thread I found this solution:
> var Web3 = require('web3');
> var solc = require('solc');
> var web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'));
> var CONTRACT_FILE = 'HelloWorld.sol'
> var content =fs.readFileSync(CONTRACT_FILE).toString()
> var input = {
language: 'Solidity',
sources: {
[CONTRACT_FILE]: {
content: content
}
},
settings: {
outputSelection: {
'*': {
'*': ['*']
}
}
}
}
> var compiled = solc.compile(JSON.stringify(input))
> var output = JSON.parse(compiled)
> var abi = output.contracts[CONTRACT_FILE]['HelloWorld'].abi
> var bytecode = output.contracts[CONTRACT_FILE]['HelloWorld'].evm.bytecode.object
> var HelloWorld = new web3.eth.Contract(abi);
> var HelloWorldTx = HelloWorld.deploy({data: bytecode, arguments: [web3.utils.asciiToHex('Hello')]});
> web3.eth.estimateGas(HelloWorldTx).then(console.log); //this does not work, because it can not connect to the localhost:8545. I don't know why.
> HelloWorldTx.send({from: '0x99d54a45f2cd3b9c6443d623003416aaf944338e', gas: 1000000}).then(console.log);
answered Dec 16 '18 at 17:35
Banana CakeBanana Cake
909
add a comment |
1
1
1
The problem was, that you I can not put raw solidity smart contract into solc.compile() function. There must be Compiler Standard Input JSON. Based on my another thread I found this solution:
> var Web3 = require('web3');
> var solc = require('solc');
> var web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'));
> var CONTRACT_FILE = 'HelloWorld.sol'
> var content =fs.readFileSync(CONTRACT_FILE).toString()
> var input = {
language: 'Solidity',
sources: {
[CONTRACT_FILE]: {
content: content
}
},
settings: {
outputSelection: {
'*': {
'*': ['*']
}
}
}
}
> var compiled = solc.compile(JSON.stringify(input))
> var output = JSON.parse(compiled)
> var abi = output.contracts[CONTRACT_FILE]['HelloWorld'].abi
> var bytecode = output.contracts[CONTRACT_FILE]['HelloWorld'].evm.bytecode.object
> var HelloWorld = new web3.eth.Contract(abi);
> var HelloWorldTx = HelloWorld.deploy({data: bytecode, arguments: [web3.utils.asciiToHex('Hello')]});
> web3.eth.estimateGas(HelloWorldTx).then(console.log); //this does not work, because it can not connect to the localhost:8545. I don't know why.
> HelloWorldTx.send({from: '0x99d54a45f2cd3b9c6443d623003416aaf944338e', gas: 1000000}).then(console.log);
answered Dec 16 '18 at 17:35
Banana CakeBanana Cake
909
The problem was, that you I can not put raw solidity smart contract into solc.compile() function. There must be Compiler Standard Input JSON. Based on my another thread I found this solution:
> var Web3 = require('web3');
> var solc = require('solc');
> var web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'));
> var CONTRACT_FILE = 'HelloWorld.sol'
> var content =fs.readFileSync(CONTRACT_FILE).toString()
> var input = {
language: 'Solidity',
sources: {
[CONTRACT_FILE]: {
content: content
}
},
settings: {
outputSelection: {
'*': {
'*': ['*']
}
}
}
}
> var compiled = solc.compile(JSON.stringify(input))
> var output = JSON.parse(compiled)
> var abi = output.contracts[CONTRACT_FILE]['HelloWorld'].abi
> var bytecode = output.contracts[CONTRACT_FILE]['HelloWorld'].evm.bytecode.object
> var HelloWorld = new web3.eth.Contract(abi);
> var HelloWorldTx = HelloWorld.deploy({data: bytecode, arguments: [web3.utils.asciiToHex('Hello')]});
> web3.eth.estimateGas(HelloWorldTx).then(console.log); //this does not work, because it can not connect to the localhost:8545. I don't know why.
> HelloWorldTx.send({from: '0x99d54a45f2cd3b9c6443d623003416aaf944338e', gas: 1000000}).then(console.log);
answered Dec 16 '18 at 17:35
Banana CakeBanana Cake
909
edited Dec 16 '18 at 17:55
answered Dec 16 '18 at 17:35
Banana CakeBanana Cake
909
answered Dec 16 '18 at 17:35
Banana CakeBanana Cake
909
answered Dec 16 '18 at 17:35
Banana CakeBanana Cake
909
909
add a comment |
add a comment |
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Can you try with an earlier version of the solidity compiler?
– nikos fotiadis
Nov 24 '18 at 20:28
If I write pragma solidity ^0.4.x it throws error that I have version 0.5.0
– Banana Cake
Nov 24 '18 at 21:23
I think you need to change the version of the compiler you have installed as well.
– nikos fotiadis
Nov 24 '18 at 21:34
I changed the version to 0.4.18 but there is the same problem.
– Banana Cake
Nov 24 '18 at 22:39