void
OverloadedUnaryAndCheck::registerMatchers(ast_matchers::MatchFinder *Finder) {
// Match unary methods that overload operator&.
Finder->addMatcher(methodDecl(parameterCountIs(0), hasOverloadedOperatorName(
"&")).bind("overload"),
this);
// Also match freestanding unary operator& overloads. Be careful not to match
// binary methods.
Finder->addMatcher(
functionDecl(
allOf(unless(methodDecl()),
functionDecl(parameterCountIs(1),
hasOverloadedOperatorName("&")).bind("overload"))),
this);
}
void RedundantVoidArgCheck::registerMatchers(MatchFinder *Finder) {
Finder->addMatcher(functionDecl(parameterCountIs(0), unless(isImplicit()),
unless(isExternC()))
.bind(FunctionId),
this);
Finder->addMatcher(typedefNameDecl().bind(TypedefId), this);
auto ParenFunctionType = parenType(innerType(functionType()));
auto PointerToFunctionType = pointee(ParenFunctionType);
auto FunctionOrMemberPointer =
anyOf(hasType(pointerType(PointerToFunctionType)),
hasType(memberPointerType(PointerToFunctionType)));
Finder->addMatcher(fieldDecl(FunctionOrMemberPointer).bind(FieldId), this);
Finder->addMatcher(varDecl(FunctionOrMemberPointer).bind(VarId), this);
auto CastDestinationIsFunction =
hasDestinationType(pointsTo(ParenFunctionType));
Finder->addMatcher(
cStyleCastExpr(CastDestinationIsFunction).bind(CStyleCastId), this);
Finder->addMatcher(
cxxStaticCastExpr(CastDestinationIsFunction).bind(NamedCastId), this);
Finder->addMatcher(
cxxReinterpretCastExpr(CastDestinationIsFunction).bind(NamedCastId),
this);
Finder->addMatcher(
cxxConstCastExpr(CastDestinationIsFunction).bind(NamedCastId), this);
Finder->addMatcher(lambdaExpr().bind(LambdaId), this);
}
void OverloadedUnaryAndCheck::registerMatchers(
ast_matchers::MatchFinder *Finder) {
// Only register the matchers for C++; the functionality currently does not
// provide any benefit to other languages, despite being benign.
if (!getLangOpts().CPlusPlus)
return;
// Match unary methods that overload operator&.
Finder->addMatcher(
cxxMethodDecl(parameterCountIs(0), hasOverloadedOperatorName("&"))
.bind("overload"),
this);
// Also match freestanding unary operator& overloads. Be careful not to match
// binary methods.
Finder->addMatcher(functionDecl(unless(cxxMethodDecl()), parameterCountIs(1),
hasOverloadedOperatorName("&"))
.bind("overload"),
this);
}
void ContainerSizeEmptyCheck::registerMatchers(MatchFinder *Finder) {
// Only register the matchers for C++; the functionality currently does not
// provide any benefit to other languages, despite being benign.
if (!getLangOpts().CPlusPlus)
return;
const auto ValidContainer = cxxRecordDecl(isSameOrDerivedFrom(
namedDecl(
has(cxxMethodDecl(
isConst(), parameterCountIs(0), isPublic(), hasName("size"),
returns(qualType(isInteger(), unless(booleanType()))))
.bind("size")),
has(cxxMethodDecl(isConst(), parameterCountIs(0), isPublic(),
hasName("empty"), returns(booleanType()))
.bind("empty")))
.bind("container")));
const auto WrongUse = anyOf(
hasParent(binaryOperator(
matchers::isComparisonOperator(),
hasEitherOperand(ignoringImpCasts(anyOf(
integerLiteral(equals(1)), integerLiteral(equals(0))))))
.bind("SizeBinaryOp")),
hasParent(implicitCastExpr(
hasImplicitDestinationType(booleanType()),
anyOf(
hasParent(unaryOperator(hasOperatorName("!")).bind("NegOnSize")),
anything()))),
hasParent(explicitCastExpr(hasDestinationType(booleanType()))));
Finder->addMatcher(
cxxMemberCallExpr(on(expr(anyOf(hasType(ValidContainer),
hasType(pointsTo(ValidContainer)),
hasType(references(ValidContainer))))
.bind("STLObject")),
callee(cxxMethodDecl(hasName("size"))), WrongUse)
.bind("SizeCallExpr"),
this);
}
