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Allow fallback function to return data.

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This commit is contained in:
chriseth
2020-11-23 14:22:37 +01:00
parent b62de4f16d
commit fda352094f
15 changed files with 128 additions and 21 deletions
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libsolidity/analysis/TypeChecker.cpp
+13 -7
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@@ -1831,15 +1831,21 @@ void TypeChecker::typeCheckFallbackFunction(FunctionDefinition const& _function)
);
if (_function.visibility() != Visibility::External)
m_errorReporter.typeError(1159_error, _function.location(), "Fallback function must be defined as \"external\".");
if (!_function.returnParameters().empty())
if (!_function.returnParameters().empty() || !_function.parameters().empty())
{
if (_function.returnParameters().size() > 1 || *type(*_function.returnParameters().front()) != *TypeProvider::bytesMemory())
m_errorReporter.typeError(5570_error, _function.returnParameterList()->location(), "Fallback function can only have a single \"bytes memory\" return value.");
else
m_errorReporter.typeError(6151_error, _function.returnParameterList()->location(), "Return values for fallback functions are not yet implemented.");
if (
_function.returnParameters().size() != 1 ||
*type(*_function.returnParameters().front()) != *TypeProvider::bytesMemory() ||
_function.parameters().size() != 1 ||
*type(*_function.parameters().front()) != *TypeProvider::bytesCalldata()
)
m_errorReporter.typeError(
5570_error,
_function.returnParameterList()->location(),
"Fallback function either has to have the signature \"fallback()\" or \"fallback(bytes calldata) returns (bytes memory)\"."
);
}
if (!_function.parameters().empty())
m_errorReporter.typeError(3978_error, _function.parameterList().location(), "Fallback function cannot take parameters.");
}
void TypeChecker::typeCheckReceiveFunction(FunctionDefinition const& _function)