void GlobalNamesInHeadersCheck::registerMatchers(
ast_matchers::MatchFinder *Finder) {
Finder->addMatcher(decl(anyOf(usingDecl(), usingDirectiveDecl()),
hasDeclContext(translationUnitDecl()))
.bind("using_decl"),
this);
}
void UseUncaughtExceptionsCheck::registerMatchers(MatchFinder *Finder) {
if (!getLangOpts().CPlusPlus17)
return;
std::string MatchText = "::std::uncaught_exception";
// Using declaration: warning and fix-it.
Finder->addMatcher(
usingDecl(hasAnyUsingShadowDecl(hasTargetDecl(hasName(MatchText))))
.bind("using_decl"),
this);
// DeclRefExpr: warning, no fix-it.
Finder->addMatcher(declRefExpr(allOf(to(functionDecl(hasName(MatchText))),
unless(callExpr())))
.bind("decl_ref_expr"),
this);
// CallExpr: warning, fix-it.
Finder->addMatcher(
callExpr(allOf(hasDeclaration(functionDecl(hasName(MatchText))),
unless(hasAncestor(initListExpr()))))
.bind("call_expr"),
this);
// CallExpr in initialisation list: warning, fix-it with avoiding narrowing
// conversions.
Finder->addMatcher(
callExpr(allOf(hasAncestor(initListExpr()),
hasDeclaration(functionDecl(hasName(MatchText)))))
.bind("init_call_expr"),
this);
}
TEST(UsingDecl, SourceRange) {
RangeVerifier<UsingDecl> Verifier;
Verifier.expectRange(2, 22, 2, 25);
EXPECT_TRUE(Verifier.match(
"class B { protected: int i; };\n"
"class D : public B { B::i; };",
usingDecl()));
}
void ReplaceAutoPtrCheck::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;
auto AutoPtrDecl = recordDecl(hasName("auto_ptr"), isFromStdNamespace());
auto AutoPtrType = qualType(hasDeclaration(AutoPtrDecl));
// std::auto_ptr<int> a;
// ^~~~~~~~~~~~~
//
// typedef std::auto_ptr<int> int_ptr_t;
// ^~~~~~~~~~~~~
//
// std::auto_ptr<int> fn(std::auto_ptr<int>);
// ^~~~~~~~~~~~~ ^~~~~~~~~~~~~
Finder->addMatcher(typeLoc(loc(qualType(AutoPtrType,
// Skip elaboratedType() as the named
// type will match soon thereafter.
unless(elaboratedType()))))
.bind(AutoPtrTokenId),
this);
// using std::auto_ptr;
// ^~~~~~~~~~~~~~~~~~~
Finder->addMatcher(usingDecl(hasAnyUsingShadowDecl(hasTargetDecl(allOf(
hasName("auto_ptr"), isFromStdNamespace()))))
.bind(AutoPtrTokenId),
this);
// Find ownership transfers via copy construction and assignment.
// AutoPtrOwnershipTransferId is bound to the the part that has to be wrapped
// into std::move().
// std::auto_ptr<int> i, j;
// i = j;
// ~~~~^
auto MovableArgumentMatcher =
expr(isLValue(), hasType(AutoPtrType)).bind(AutoPtrOwnershipTransferId);
Finder->addMatcher(
cxxOperatorCallExpr(hasOverloadedOperatorName("="),
callee(cxxMethodDecl(ofClass(AutoPtrDecl))),
hasArgument(1, MovableArgumentMatcher)),
this);
Finder->addMatcher(cxxConstructExpr(hasType(AutoPtrType), argumentCountIs(1),
hasArgument(0, MovableArgumentMatcher)),
this);
}
/// \brief Creates a matcher that finds the using declarations referring to
/// \c std::auto_ptr.
///
/// \code
/// using std::auto_ptr;
/// ^~~~~~~~~~~~~~~~~~~
/// \endcode
DeclarationMatcher makeAutoPtrUsingDeclMatcher() {
return usingDecl(hasAnyUsingShadowDecl(hasTargetDecl(
allOf(hasName("auto_ptr"), isFromStdNamespace()))))
.bind(AutoPtrTokenId);
}
