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SwitchStatementsShouldHaveDefaultRule.cpp
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SwitchStatementsShouldHaveDefaultRule.cpp
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#include "oclint/AbstractASTVisitorRule.h"
#include "oclint/RuleSet.h"
using namespace std;
using namespace clang;
using namespace oclint;
class SwitchStatementsShouldHaveDefaultRule :
public AbstractASTVisitorRule<SwitchStatementsShouldHaveDefaultRule>
{
public:
virtual const string name() const override
{
return "missing default in switch statements";
}
virtual const string identifier() const override
{
return "MissingDefaultStatement";
}
virtual int priority() const override
{
return 3;
}
virtual const string category() const override
{
return "convention";
}
#ifdef DOCGEN
virtual const std::string since() const override
{
return "0.6";
}
virtual const std::string description() const override
{
return "Switch statements should have a default statement.";
}
virtual const std::string fileName() const override
{
return "SwitchStatementsShouldHaveDefaultRule.cpp";
}
virtual const std::string example() const override
{
return R"rst(
.. code-block:: cpp
void example(int a)
{
switch (a) {
case 1:
break;
case 2:
break;
// should have a default
}
}
)rst";
}
#endif
bool VisitSwitchStmt(SwitchStmt *switchStmt)
{
if (switchStmt->isAllEnumCasesCovered())
{
return true;
}
SwitchCase *currentSwitchCase = switchStmt->getSwitchCaseList();
bool hasDefault = false;
while (currentSwitchCase)
{
if (isa<DefaultStmt>(currentSwitchCase))
{
hasDefault = true;
break;
}
currentSwitchCase = currentSwitchCase->getNextSwitchCase();
}
if (!hasDefault)
{
addViolation(switchStmt, this);
}
return true;
}
};
static RuleSet rules(new SwitchStatementsShouldHaveDefaultRule());