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Introduce view (and keep constant as an alias)

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This commit is contained in:
Alex Beregszaszi 2016-09-08 02:18:17 +01:00
parent 210b4870a8
commit efe4d68a7b
8 changed files with 13 additions and 9 deletions
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1
Changelog.md
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@ -3,6 +3,7 @@
Features:
* ABI JSON: Include new field ``statemutability`` with values ``view``, ``nonpayable`` and ``payable``.
* Parser: Display previous visibility specifier in error if multiple are found.
* Parser: Introduce ``view`` keyword on functions (``constant`` remains an alias for ``view``).
* Syntax Checker: Support ``pragma experimental <feature>;`` to turn on experimental features.
* Static Analyzer: Warn about large storage structures.
* Metadata: Store experimental flag in metadata CBOR.

2
docs/types.rst
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@ -337,7 +337,7 @@ be passed via and returned from external function calls.
Function types are notated as follows::
function (<parameter types>) {internal|external} [constant|payable] [returns (<return types>)]
function (<parameter types>) {internal|external} [constant|view|payable] [returns (<return types>)]
In contrast to the parameter types, the return types cannot be empty - if the
function type should not return anything, the whole ``returns (<return types>)``

2
libsolidity/ast/ASTJsonConverter.cpp
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@ -323,6 +323,7 @@ bool ASTJsonConverter::visit(FunctionDefinition const& _node)
{
std::vector<pair<string, Json::Value>> attributes = {
make_pair("name", _node.name()),
// FIXME: remove with next breaking release
make_pair(m_legacy ? "constant" : "isDeclaredConst", _node.stateMutability() == StateMutability::View),
make_pair("payable", _node.isPayable()),
make_pair("statemutability", stateMutabilityToString(_node.stateMutability())),
@ -415,6 +416,7 @@ bool ASTJsonConverter::visit(FunctionTypeName const& _node)
make_pair("payable", _node.isPayable()),
make_pair("visibility", Declaration::visibilityToString(_node.visibility())),
make_pair("statemutability", stateMutabilityToString(_node.stateMutability())),
// FIXME: remove with next breaking release
make_pair(m_legacy ? "constant" : "isDeclaredConst", _node.stateMutability() == StateMutability::View),
make_pair("parameterTypes", toJson(*_node.parameterTypeList())),
make_pair("returnParameterTypes", toJson(*_node.returnParameterTypeList())),

1
libsolidity/ast/Types.h
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@ -993,7 +993,6 @@ public:
return *m_declaration;
}
bool hasDeclaration() const { return !!m_declaration; }
bool isConstant() const { return m_stateMutability == StateMutability::View; }
/// @returns true if the the result of this function only depends on its arguments
/// and it does not modify the state.
/// Currently, this will only return true for internal functions like keccak and ecrecover.

3
libsolidity/interface/ABI.cpp
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@ -35,7 +35,8 @@ Json::Value ABI::generate(ContractDefinition const& _contractDef)
Json::Value method;
method["type"] = "function";
method["name"] = it.second->declaration().name();
method["constant"] = it.second->isConstant();
// TODO: deprecate constant in a future release
method["constant"] = it.second->stateMutability() == StateMutability::View;
method["payable"] = it.second->isPayable();
method["statemutability"] = stateMutabilityToString(it.second->stateMutability());
method["inputs"] = formatTypeList(

3
libsolidity/parsing/Parser.cpp
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@ -337,7 +337,8 @@ StateMutability Parser::parseStateMutability(Token::Value _token)
StateMutability stateMutability(StateMutability::NonPayable);
if (_token == Token::Payable)
stateMutability = StateMutability::Payable;
else if (_token == Token::Constant)
// FIXME: constant should be removed at the next breaking release
else if (_token == Token::View || _token == Token::Constant)
stateMutability = StateMutability::View;
else
solAssert(false, "Invalid state mutability specifier.");

4
libsolidity/parsing/Token.h
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@ -176,6 +176,7 @@ namespace solidity
K(Throw, "throw", 0) \
K(Using, "using", 0) \
K(Var, "var", 0) \
K(View, "view", 0) \
K(While, "while", 0) \
\
/* Ether subdenominations */ \
@ -236,7 +237,6 @@ namespace solidity
K(Try, "try", 0) \
K(Type, "type", 0) \
K(TypeOf, "typeof", 0) \
K(View, "view", 0) \
/* Illegal token - not able to scan. */ \
T(Illegal, "ILLEGAL", 0) \
\
@ -290,7 +290,7 @@ public:
static bool isVisibilitySpecifier(Value op) { return isVariableVisibilitySpecifier(op) || op == External; }
static bool isVariableVisibilitySpecifier(Value op) { return op == Public || op == Private || op == Internal; }
static bool isLocationSpecifier(Value op) { return op == Memory || op == Storage; }
static bool isStateMutabilitySpecifier(Value op) { return op == Constant || op == Payable; }
static bool isStateMutabilitySpecifier(Value op) { return op == Constant || op == View || op == Payable; }
static bool isEtherSubdenomination(Value op) { return op == SubWei || op == SubSzabo || op == SubFinney || op == SubEther; }
static bool isTimeSubdenomination(Value op) { return op == SubSecond || op == SubMinute || op == SubHour || op == SubDay || op == SubWeek || op == SubYear; }
static bool isReservedKeyword(Value op) { return (Abstract <= op && op <= TypeOf); }

6
test/libsolidity/SolidityNameAndTypeResolution.cpp
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@ -1172,7 +1172,7 @@ BOOST_AUTO_TEST_CASE(state_variable_accessors)
BOOST_REQUIRE(function && function->hasDeclaration());
auto returnParams = function->returnParameterTypes();
BOOST_CHECK_EQUAL(returnParams.at(0)->canonicalName(false), "uint256");
BOOST_CHECK(function->isConstant());
BOOST_CHECK(function->stateMutability() == StateMutability::View);
function = retrieveFunctionBySignature(*contract, "map(uint256)");
BOOST_REQUIRE(function && function->hasDeclaration());
@ -1180,7 +1180,7 @@ BOOST_AUTO_TEST_CASE(state_variable_accessors)
BOOST_CHECK_EQUAL(params.at(0)->canonicalName(false), "uint256");
returnParams = function->returnParameterTypes();
BOOST_CHECK_EQUAL(returnParams.at(0)->canonicalName(false), "bytes4");
BOOST_CHECK(function->isConstant());
BOOST_CHECK(function->stateMutability() == StateMutability::View);
function = retrieveFunctionBySignature(*contract, "multiple_map(uint256,uint256)");
BOOST_REQUIRE(function && function->hasDeclaration());
@ -1189,7 +1189,7 @@ BOOST_AUTO_TEST_CASE(state_variable_accessors)
BOOST_CHECK_EQUAL(params.at(1)->canonicalName(false), "uint256");
returnParams = function->returnParameterTypes();
BOOST_CHECK_EQUAL(returnParams.at(0)->canonicalName(false), "bytes4");
BOOST_CHECK(function->isConstant());
BOOST_CHECK(function->stateMutability() == StateMutability::View);
}
BOOST_AUTO_TEST_CASE(function_clash_with_state_variable_accessor)