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Diffstat (limited to 'contrib/llvm/tools/clang/lib/Analysis/FormatStringParsing.h')
-rw-r--r-- | contrib/llvm/tools/clang/lib/Analysis/FormatStringParsing.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/contrib/llvm/tools/clang/lib/Analysis/FormatStringParsing.h b/contrib/llvm/tools/clang/lib/Analysis/FormatStringParsing.h new file mode 100644 index 0000000..f483ec6 --- /dev/null +++ b/contrib/llvm/tools/clang/lib/Analysis/FormatStringParsing.h @@ -0,0 +1,74 @@ +#ifndef LLVM_CLANG_FORMAT_PARSING_H +#define LLVM_CLANG_FORMAT_PARSING_H + +#include "clang/Analysis/Analyses/FormatString.h" +#include "clang/AST/ASTContext.h" +#include "clang/AST/Type.h" +#include "llvm/Support/raw_ostream.h" + +namespace clang { + +class LangOptions; + +template <typename T> +class UpdateOnReturn { + T &ValueToUpdate; + const T &ValueToCopy; +public: + UpdateOnReturn(T &valueToUpdate, const T &valueToCopy) + : ValueToUpdate(valueToUpdate), ValueToCopy(valueToCopy) {} + + ~UpdateOnReturn() { + ValueToUpdate = ValueToCopy; + } +}; + +namespace analyze_format_string { + +OptionalAmount ParseAmount(const char *&Beg, const char *E); +OptionalAmount ParseNonPositionAmount(const char *&Beg, const char *E, + unsigned &argIndex); + +OptionalAmount ParsePositionAmount(FormatStringHandler &H, + const char *Start, const char *&Beg, + const char *E, PositionContext p); + +bool ParseFieldWidth(FormatStringHandler &H, + FormatSpecifier &CS, + const char *Start, const char *&Beg, const char *E, + unsigned *argIndex); + +bool ParseArgPosition(FormatStringHandler &H, + FormatSpecifier &CS, const char *Start, + const char *&Beg, const char *E); + +/// Returns true if a LengthModifier was parsed and installed in the +/// FormatSpecifier& argument, and false otherwise. +bool ParseLengthModifier(FormatSpecifier &FS, const char *&Beg, const char *E, + const LangOptions &LO, bool IsScanf = false); + +template <typename T> class SpecifierResult { + T FS; + const char *Start; + bool Stop; +public: + SpecifierResult(bool stop = false) + : Start(0), Stop(stop) {} + SpecifierResult(const char *start, + const T &fs) + : FS(fs), Start(start), Stop(false) {} + + const char *getStart() const { return Start; } + bool shouldStop() const { return Stop; } + bool hasValue() const { return Start != 0; } + const T &getValue() const { + assert(hasValue()); + return FS; + } + const T &getValue() { return FS; } +}; + +} // end analyze_format_string namespace +} // end clang namespace + +#endif |