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Enforces visibility specifier and updates docs.
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@ -3,6 +3,7 @@
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How to update your code:
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* Change every ``.call()`` to a ``.call("")`` and every ``.call(signature, a, b, c)`` to use ``.call(abi.encodeWithSignature(signature, a, b, c))`` (the last one only works for value types).
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* Change every ``keccak256(a, b, c)`` to ``keccak256(abi.encodePacked(a, b, c))``.
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* Add ``public`` to every function that does not specify its visibility already.
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* Make your fallback functions ``external``.
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* Explicitly state the storage location for local variables of struct and array types, e.g. change ``uint[] x = m_x`` to ``uint[] storage x = m_x``.
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@ -49,6 +50,7 @@ Breaking Changes:
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* Remove obsolete ``std`` directory from the Solidity repository. This means accessing ``https://github.com/ethereum/soldity/blob/develop/std/*.sol`` (or ``https://github.com/ethereum/solidity/std/*.sol`` in Remix) will not be possible.
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* References Resolver: Turn missing storage locations into an error. This was already the case in the experimental 0.5.0 mode.
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* Syntax Checker: Named return values in function types are an error.
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* Syntax Checker: Strictly require visibility specifier. This was already the case in the experimental 0.5.0 mode.
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* Syntax Checker: Disallow unary ``+``. This was already the case in the experimental 0.5.0 mode.
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* View Pure Checker: Strictly enfore state mutability. This was already the case in the experimental 0.5.0 mode.
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@ -131,10 +131,9 @@ a "message call") and external
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ones that do), there are four types of visibilities for
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functions and state variables.
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Functions can be specified as being ``external``,
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``public``, ``internal`` or ``private``, where the default is
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``public``. For state variables, ``external`` is not possible
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and the default is ``internal``.
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Functions have to be specified as being ``external``,
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``public``, ``internal`` or ``private``.
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For state variables, ``external`` is not possible.
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``external``:
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External functions are part of the contract
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@ -850,10 +849,10 @@ Details are given in the following example.
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::
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pragma solidity ^0.4.22;
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pragma solidity >0.4.24;
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contract owned {
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constructor() { owner = msg.sender; }
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constructor() public { owner = msg.sender; }
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address owner;
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}
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@ -862,7 +861,7 @@ Details are given in the following example.
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// internal functions and state variables. These cannot be
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// accessed externally via `this`, though.
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contract mortal is owned {
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function kill() {
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function kill() public {
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if (msg.sender == owner) selfdestruct(owner);
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}
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}
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@ -884,7 +883,7 @@ Details are given in the following example.
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// also a base class of `mortal`, yet there is only a single
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// instance of `owned` (as for virtual inheritance in C++).
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contract named is owned, mortal {
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constructor(bytes32 name) {
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constructor(bytes32 name) public {
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Config config = Config(0xD5f9D8D94886E70b06E474c3fB14Fd43E2f23970);
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NameReg(config.lookup(1)).register(name);
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}
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@ -465,10 +465,10 @@ The following example shows how an error string can be used together with revert
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::
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pragma solidity ^0.4.22;
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pragma solidity >0.4.24;
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contract VendingMachine {
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function buy(uint amount) payable {
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function buy(uint amount) public payable {
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if (amount > msg.value / 2 ether)
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revert("Not enough Ether provided.");
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// Alternative way to do it:
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@ -205,7 +205,7 @@ for the two input parameters and two returned values.
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* @return s The calculated surface.
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* @return p The calculated perimeter.
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*/
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function rectangle(uint w, uint h) returns (uint s, uint p) {
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function rectangle(uint w, uint h) public returns (uint s, uint p) {
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s = w * h;
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p = 2 * (w + h);
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}
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@ -483,7 +483,7 @@ Another example that uses external function types::
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contract OracleUser {
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Oracle constant oracle = Oracle(0x1234567); // known contract
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function buySomething() {
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function buySomething() public {
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oracle.query("USD", this.oracleResponse);
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}
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function oracleResponse(bytes memory response) public {
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@ -979,4 +979,3 @@ converted to a matching size. This makes alignment and padding explicit::
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uint16 x = 0xffff;
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bytes32(uint256(x)); // pad on the left
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bytes32(bytes2(x)); // pad on the right
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@ -51,16 +51,6 @@ void StaticAnalyzer::endVisit(ContractDefinition const&)
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bool StaticAnalyzer::visit(FunctionDefinition const& _function)
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{
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const bool isInterface = m_currentContract->contractKind() == ContractDefinition::ContractKind::Interface;
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if (_function.noVisibilitySpecified())
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m_errorReporter.warning(
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_function.location(),
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"No visibility specified. Defaulting to \"" +
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Declaration::visibilityToString(_function.visibility()) +
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"\"." +
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(isInterface ? " In interfaces it defaults to external." : "")
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);
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if (_function.isImplemented())
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m_currentFunction = &_function;
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else
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@ -201,7 +201,7 @@ bool SyntaxChecker::visit(FunctionDefinition const& _function)
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{
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bool const v050 = m_sourceUnit->annotation().experimentalFeatures.count(ExperimentalFeature::V050);
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if (v050 && _function.noVisibilitySpecified())
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if (_function.noVisibilitySpecified())
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m_errorReporter.syntaxError(_function.location(), "No visibility specified.");
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if (_function.isOldStyleConstructor())
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