19 #ifndef LLVM_CLANG_ANALYSIS_ANALYSES_FORMATSTRING_H 20 #define LLVM_CLANG_ANALYSIS_ANALYSES_FORMATSTRING_H 30 namespace analyze_format_string {
37 : representation(Representation), flag(
false) {}
38 bool isSet()
const {
return flag; }
39 void set() { flag =
true; }
44 this->position = position;
50 const char *
toString()
const {
return representation; }
53 explicit operator bool()
const {
return flag; }
59 const char *representation;
88 : Position(nullptr),
kind(None) {}
90 : Position(pos),
kind(k) {}
117 const char *Position;
124 InvalidSpecifier = 0,
171 ObjCBeg = ObjCObjArg,
172 ObjCEnd = ObjCObjArg,
183 PrintfConvBeg = ObjCObjArg,
184 PrintfConvEnd = PrintErrno,
188 ScanfConvBeg = ScanListArg,
189 ScanfConvEnd = ScanListArg
193 : IsPrintf(isPrintf), Position(nullptr), EndScanList(nullptr),
194 kind(InvalidSpecifier) {}
197 : IsPrintf(isPrintf), Position(pos), EndScanList(nullptr),
kind(k) {}
204 return StringRef(getStart(), getLength());
214 case InvalidSpecifier:
224 return EndScanList ? EndScanList - Position : 1;
229 kind == FreeBSDrArg ||
kind == FreeBSDyArg; }
233 return kind >= DoubleArgBeg &&
kind <= DoubleArgEnd;
252 AnyCharTy, CStrTy, WCStrTy, WIntTy };
254 enum MatchKind { NoMatch = 0, Match = 1, NoMatchPedantic };
259 const char *Name =
nullptr;
264 enum class TypeKind { DontCare, SizeT, PtrdiffT };
265 TypeKind TK = TypeKind::DontCare;
268 ArgType(
Kind K = UnknownTy,
const char *N =
nullptr) : K(K), Name(N) {}
273 bool isValid()
const {
return K != InvalidTy; }
275 bool isSizeT()
const {
return TK == TypeKind::SizeT; }
281 assert(A.K >= InvalidTy &&
"ArgType cannot be pointer to invalid/unknown");
290 Res.TK = TypeKind::SizeT;
298 Res.TK = TypeKind::PtrdiffT;
306 std::string getRepresentativeTypeName(
ASTContext &C)
const;
315 const char *amountStart,
316 unsigned amountLength,
317 bool usesPositionalArg)
318 : start(amountStart),
length(amountLength), hs(howSpecified), amt(amount),
319 UsesPositionalArg(usesPositionalArg), UsesDotPrefix(0) {}
322 : start(nullptr),
length(0), hs(valid ? NotSpecified : Invalid), amt(0),
323 UsesPositionalArg(0), UsesDotPrefix(0) {}
326 return hs == Invalid;
335 assert(hasDataArgument());
340 assert(hs == Constant);
346 return start - UsesDotPrefix;
350 assert(hs == Constant);
351 return length + UsesDotPrefix;
356 void toString(raw_ostream &os)
const;
360 assert(hasDataArgument());
372 bool UsesPositionalArg : 1;
389 : CS(isPrintf), UsesPositionalArg(
false), argIndex(0) {}
425 bool hasStandardLengthModifier()
const;
429 bool hasStandardConversionSpecifier(
const LangOptions &LangOpt)
const;
431 bool hasStandardLengthConversionCombination()
const;
443 namespace analyze_printf {
449 : ConversionSpecifier(
true, nullptr, InvalidSpecifier) {}
452 : ConversionSpecifier(
true, pos, k) {}
456 kind <= DoubleArgEnd; }
481 : FormatSpecifier(
true), HasThousandsGrouping(
"'"),
482 IsLeftJustified(
"-"), HasPlusPrefix(
"+"), HasSpacePrefix(
" "),
483 HasAlternativeForm(
"#"), HasLeadingZeroes(
"0"),
484 HasObjCTechnicalTerm(
"tt"), IsPrivate(
"private"), IsPublic(
"public") {}
520 return cast<PrintfConversionSpecifier>(CS);
533 return getConversionSpecifier().consumesDataArgument();
544 return HasThousandsGrouping;
562 void toString(raw_ostream &os)
const;
565 bool hasValidPlusPrefix()
const;
566 bool hasValidAlternativeForm()
const;
567 bool hasValidLeadingZeros()
const;
568 bool hasValidSpacePrefix()
const;
569 bool hasValidLeftJustified()
const;
570 bool hasValidThousandsGroupingPrefix()
const;
572 bool hasValidPrecision()
const;
573 bool hasValidFieldWidth()
const;
580 namespace analyze_scanf {
586 : ConversionSpecifier(
false, nullptr, InvalidSpecifier) {}
589 : ConversionSpecifier(
false, pos, k) {}
605 FormatSpecifier(
false),
606 SuppressAssignment(
"*") {}
613 return SuppressAssignment;
621 return cast<ScanfConversionSpecifier>(CS);
625 return CS.consumesDataArgument() && !SuppressAssignment;
633 void toString(raw_ostream &os)
const;
643 namespace analyze_format_string {
662 unsigned specifierLen) {}
665 unsigned flagsLen) {}
671 const char *flagsEnd,
672 const char *conversionPosition) {}
677 const char *startSpecifier,
678 unsigned specifierLen) {
683 const char *startSpecifier,
684 unsigned specifierLen) {
692 const char *startSpecifier,
693 unsigned specifierLen) {
698 const char *startSpecifier,
699 unsigned specifierLen) {
707 const char *beg,
const char *end,
const LangOptions &LO,
714 const char *beg,
const char *end,
const LangOptions &LO,
const OptionalFlag & hasAlternativeForm() const
A (possibly-)qualified type.
const ScanfConversionSpecifier & getConversionSpecifier() const
void setIsPublic(const char *position)
const OptionalFlag & getSuppressAssignment() const
bool consumesDataArgument() const
void setHasLeadingZeros(const char *position)
bool usesPositionalArg() const
const OptionalFlag & hasThousandsGrouping() const
PrintfConversionSpecifier(const char *pos, Kind k)
static bool classof(const analyze_format_string::ConversionSpecifier *CS)
void setPrecision(const OptionalAmount &Amt)
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
void setHasSpacePrefix(const char *position)
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
void setConversionSpecifier(const PrintfConversionSpecifier &cs)
void setIsLeftJustified(const char *position)
void setUsesPositionalArg()
ScanfConversionSpecifier(const char *pos, Kind k)
const OptionalFlag & hasLeadingZeros() const
const OptionalFlag & hasPlusPrefix() const
Exposes information about the current target.
const OptionalFlag & isLeftJustified() const
float __ovld __cnfn length(float p)
Return the length of vector p, i.e., sqrt(p.x2 + p.y 2 + ...)
void setIsPrivate(const char *position)
void setHasThousandsGrouping(const char *position)
void setConversionSpecifier(const ScanfConversionSpecifier &cs)
const PrintfConversionSpecifier & getConversionSpecifier() const
const OptionalFlag & hasObjCTechnicalTerm() const
Dataflow Directional Tag Classes.
void setSuppressAssignment(const char *position)
PrintfConversionSpecifier()
const OptionalFlag & isPrivate() const
void setHasObjCTechnicalTerm(const char *position)
const OptionalAmount & getPrecision() const
void setHasPlusPrefix(const char *position)
const OptionalFlag & isPublic() const
const OptionalFlag & hasSpacePrefix() const
ScanfConversionSpecifier()
bool consumesDataArgument() const
unsigned kind
All of the diagnostics that can be emitted by the frontend.
static bool classof(const analyze_format_string::ConversionSpecifier *CS)
void setHasAlternativeForm(const char *position)