================
@@ -27,20 +27,48 @@ class IdentifierInfo;
namespace clang {
namespace ento {
-
-enum CallDescriptionFlags : unsigned {
- CDF_None = 0,
-
- /// Describes a C standard function that is sometimes implemented as a macro
- /// that expands to a compiler builtin with some __builtin prefix.
- /// The builtin may as well have a few extra arguments on top of the
requested
- /// number of arguments.
- CDF_MaybeBuiltin = 1 << 0,
-};
-
-/// This class represents a description of a function call using the number of
-/// arguments and the name of the function.
+/// A `CallDescription` is a pattern that can be used to _match_ calls
+/// based on the qualified name and the argument/parameter counts.
class CallDescription {
+public:
+ enum class Mode {
+ /// Match calls to functions from the C standard library. On some platforms
+ /// some functions may be implemented as macros that expand to calls to
+ /// built-in variants of the given functions, so in this mode we use some
+ /// heuristics to recognize these implementation-defined variants:
+ /// - We also accept calls where the name is derived from the specified
+ /// name by adding "__builtin" or similar prefixes/suffixes.
+ /// - We also accept calls where the number of arguments or parameters is
+ /// greater than the specified value.
+ /// For the exact heuristics, see CheckerContext::isCLibraryFunction().
+ /// Note that functions whose declaration context is not a TU (e.g.
+ /// methods, functions in namespaces) are not accepted as C library
+ /// functions.
+ /// FIXME: If I understand it correctly, this discards calls where C++ code
+ /// refers a C library function through the namespace `std::` via headers
+ /// like <cstdlib>.
+ CLibrary,
+
+ /// Matches "simple" functions that are not methods. (Static methods are
+ /// methods.)
+ SimpleFunc,
+
+ /// Matches a C+ method (may be static, may be virtual, may be an
+ /// overloaded operator, a constructor or a destructor).
+ CXXMethod,
+
+ /// Match any CallEvent that is not an ObjCMethodCall.
+ /// FIXME: Previously this was the default behavior of CallDescription, but
+ /// its use should be replaced by a more specific mode almost everywhere.
+ Unspecified,
----------------
balazske wrote:
This could have a better name like "Any" (or an other), "Unspecified" can mean
that it works in a default way.
https://github.com/llvm/llvm-project/pull/83432
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
