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More descriptive error message in TypeChecker::visit(UnaryOperation)

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wechman
2022-09-28 13:06:25 +02:00
parent e001f8346b
commit 6fcd717ab4
3 changed files with 14 additions and 11 deletions
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libsolidity/analysis/TypeChecker.cpp
+12 -9
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@@ -1731,24 +1731,24 @@ bool TypeChecker::visit(UnaryOperation const& _operation)
// Check if the operator is built-in or user-defined.
FunctionDefinition const* userDefinedOperator = subExprType->userDefinedOperator(
Result<FunctionDefinition const*> userDefinedOperatorResult = subExprType->userDefinedOperator(
_operation.getOperator(),
*currentDefinitionScope(),
true // _unaryOperation
);
_operation.annotation().userDefinedFunction = userDefinedOperator;
_operation.annotation().userDefinedFunction = userDefinedOperatorResult;
FunctionType const* userDefinedFunctionType = nullptr;
if (userDefinedOperator)
if (userDefinedOperatorResult)
userDefinedFunctionType = &dynamic_cast<FunctionType const&>(
userDefinedOperator->libraryFunction() ?
*userDefinedOperator->typeViaContractName() :
*userDefinedOperator->type()
userDefinedOperatorResult.get()->libraryFunction() ?
*userDefinedOperatorResult.get()->typeViaContractName() :
*userDefinedOperatorResult.get()->type()
);
TypeResult builtinResult = subExprType->unaryOperatorResult(op);
solAssert(!builtinResult || !userDefinedOperator);
if (userDefinedOperator)
solAssert(!builtinResult || !userDefinedOperatorResult);
if (userDefinedOperatorResult)
{
solAssert(userDefinedFunctionType->parameterTypes().size() == 1);
solAssert(userDefinedFunctionType->returnParameterTypes().size() == 1);
@@ -1762,7 +1762,10 @@ bool TypeChecker::visit(UnaryOperation const& _operation)
_operation.annotation().type = builtinResult;
else
{
string description = "Unary operator " + string(TokenTraits::toString(op)) + " cannot be applied to type " + subExprType->humanReadableName() + "." + (!builtinResult.message().empty() ? " " + builtinResult.message() : "");
string description =
"Unary operator " + string(TokenTraits::toString(op)) + " cannot be applied to type " + subExprType->humanReadableName() + "." +
(!builtinResult.message().empty() ? " " + builtinResult.message() : "") +
(!userDefinedOperatorResult.message().empty() ? " " + userDefinedOperatorResult.message() : "");
if (modifying)
// Cannot just report the error, ignore the unary operator, and continue,
// because the sub-expression was already processed with requireLValue()