| //===--- Diagnostic.h - C Language Family Diagnostic Handling ---*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines the Diagnostic-related interfaces. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_CLANG_DIAGNOSTIC_H |
| #define LLVM_CLANG_DIAGNOSTIC_H |
| |
| #include "clang/Basic/DiagnosticIDs.h" |
| #include "clang/Basic/SourceLocation.h" |
| #include "llvm/ADT/ArrayRef.h" |
| #include "llvm/ADT/DenseMap.h" |
| #include "llvm/ADT/IntrusiveRefCntPtr.h" |
| #include "llvm/ADT/OwningPtr.h" |
| #include "llvm/Support/type_traits.h" |
| |
| #include <vector> |
| #include <list> |
| |
| namespace clang { |
| class DiagnosticConsumer; |
| class DiagnosticBuilder; |
| class IdentifierInfo; |
| class DeclContext; |
| class LangOptions; |
| class Preprocessor; |
| class DiagnosticErrorTrap; |
| class StoredDiagnostic; |
| |
| /// \brief Annotates a diagnostic with some code that should be |
| /// inserted, removed, or replaced to fix the problem. |
| /// |
| /// This kind of hint should be used when we are certain that the |
| /// introduction, removal, or modification of a particular (small!) |
| /// amount of code will correct a compilation error. The compiler |
| /// should also provide full recovery from such errors, such that |
| /// suppressing the diagnostic output can still result in successful |
| /// compilation. |
| class FixItHint { |
| public: |
| /// \brief Code that should be replaced to correct the error. Empty for an |
| /// insertion hint. |
| CharSourceRange RemoveRange; |
| |
| /// \brief Code in the specific range that should be inserted in the insertion |
| /// location. |
| CharSourceRange InsertFromRange; |
| |
| /// \brief The actual code to insert at the insertion location, as a |
| /// string. |
| std::string CodeToInsert; |
| |
| bool BeforePreviousInsertions; |
| |
| /// \brief Empty code modification hint, indicating that no code |
| /// modification is known. |
| FixItHint() : BeforePreviousInsertions(false) { } |
| |
| bool isNull() const { |
| return !RemoveRange.isValid(); |
| } |
| |
| /// \brief Create a code modification hint that inserts the given |
| /// code string at a specific location. |
| static FixItHint CreateInsertion(SourceLocation InsertionLoc, |
| StringRef Code, |
| bool BeforePreviousInsertions = false) { |
| FixItHint Hint; |
| Hint.RemoveRange = |
| CharSourceRange(SourceRange(InsertionLoc, InsertionLoc), false); |
| Hint.CodeToInsert = Code; |
| Hint.BeforePreviousInsertions = BeforePreviousInsertions; |
| return Hint; |
| } |
| |
| /// \brief Create a code modification hint that inserts the given |
| /// code from \arg FromRange at a specific location. |
| static FixItHint CreateInsertionFromRange(SourceLocation InsertionLoc, |
| CharSourceRange FromRange, |
| bool BeforePreviousInsertions = false) { |
| FixItHint Hint; |
| Hint.RemoveRange = |
| CharSourceRange(SourceRange(InsertionLoc, InsertionLoc), false); |
| Hint.InsertFromRange = FromRange; |
| Hint.BeforePreviousInsertions = BeforePreviousInsertions; |
| return Hint; |
| } |
| |
| /// \brief Create a code modification hint that removes the given |
| /// source range. |
| static FixItHint CreateRemoval(CharSourceRange RemoveRange) { |
| FixItHint Hint; |
| Hint.RemoveRange = RemoveRange; |
| return Hint; |
| } |
| static FixItHint CreateRemoval(SourceRange RemoveRange) { |
| return CreateRemoval(CharSourceRange::getTokenRange(RemoveRange)); |
| } |
| |
| /// \brief Create a code modification hint that replaces the given |
| /// source range with the given code string. |
| static FixItHint CreateReplacement(CharSourceRange RemoveRange, |
| StringRef Code) { |
| FixItHint Hint; |
| Hint.RemoveRange = RemoveRange; |
| Hint.CodeToInsert = Code; |
| return Hint; |
| } |
| |
| static FixItHint CreateReplacement(SourceRange RemoveRange, |
| StringRef Code) { |
| return CreateReplacement(CharSourceRange::getTokenRange(RemoveRange), Code); |
| } |
| }; |
| |
| /// DiagnosticsEngine - This concrete class is used by the front-end to report |
| /// problems and issues. It massages the diagnostics (e.g. handling things like |
| /// "report warnings as errors" and passes them off to the DiagnosticConsumer |
| /// for reporting to the user. DiagnosticsEngine is tied to one translation unit |
| /// and one SourceManager. |
| class DiagnosticsEngine : public RefCountedBase<DiagnosticsEngine> { |
| public: |
| /// Level - The level of the diagnostic, after it has been through mapping. |
| enum Level { |
| Ignored = DiagnosticIDs::Ignored, |
| Note = DiagnosticIDs::Note, |
| Warning = DiagnosticIDs::Warning, |
| Error = DiagnosticIDs::Error, |
| Fatal = DiagnosticIDs::Fatal |
| }; |
| |
| /// ExtensionHandling - How do we handle otherwise-unmapped extension? This |
| /// is controlled by -pedantic and -pedantic-errors. |
| enum ExtensionHandling { |
| Ext_Ignore, Ext_Warn, Ext_Error |
| }; |
| |
| enum ArgumentKind { |
| ak_std_string, // std::string |
| ak_c_string, // const char * |
| ak_sint, // int |
| ak_uint, // unsigned |
| ak_identifierinfo, // IdentifierInfo |
| ak_qualtype, // QualType |
| ak_declarationname, // DeclarationName |
| ak_nameddecl, // NamedDecl * |
| ak_nestednamespec, // NestedNameSpecifier * |
| ak_declcontext // DeclContext * |
| }; |
| |
| /// Specifies which overload candidates to display when overload resolution |
| /// fails. |
| enum OverloadsShown { |
| Ovl_All, ///< Show all overloads. |
| Ovl_Best ///< Show just the "best" overload candidates. |
| }; |
| |
| /// ArgumentValue - This typedef represents on argument value, which is a |
| /// union discriminated by ArgumentKind, with a value. |
| typedef std::pair<ArgumentKind, intptr_t> ArgumentValue; |
| |
| private: |
| unsigned char AllExtensionsSilenced; // Used by __extension__ |
| bool IgnoreAllWarnings; // Ignore all warnings: -w |
| bool WarningsAsErrors; // Treat warnings like errors. |
| bool EnableAllWarnings; // Enable all warnings. |
| bool ErrorsAsFatal; // Treat errors like fatal errors. |
| bool SuppressSystemWarnings; // Suppress warnings in system headers. |
| bool SuppressAllDiagnostics; // Suppress all diagnostics. |
| OverloadsShown ShowOverloads; // Which overload candidates to show. |
| unsigned ErrorLimit; // Cap of # errors emitted, 0 -> no limit. |
| unsigned TemplateBacktraceLimit; // Cap on depth of template backtrace stack, |
| // 0 -> no limit. |
| unsigned ConstexprBacktraceLimit; // Cap on depth of constexpr evaluation |
| // backtrace stack, 0 -> no limit. |
| ExtensionHandling ExtBehavior; // Map extensions onto warnings or errors? |
| IntrusiveRefCntPtr<DiagnosticIDs> Diags; |
| DiagnosticConsumer *Client; |
| bool OwnsDiagClient; |
| SourceManager *SourceMgr; |
| |
| /// \brief Mapping information for diagnostics. Mapping info is |
| /// packed into four bits per diagnostic. The low three bits are the mapping |
| /// (an instance of diag::Mapping), or zero if unset. The high bit is set |
| /// when the mapping was established as a user mapping. If the high bit is |
| /// clear, then the low bits are set to the default value, and should be |
| /// mapped with -pedantic, -Werror, etc. |
| /// |
| /// A new DiagState is created and kept around when diagnostic pragmas modify |
| /// the state so that we know what is the diagnostic state at any given |
| /// source location. |
| class DiagState { |
| llvm::DenseMap<unsigned, DiagnosticMappingInfo> DiagMap; |
| |
| public: |
| typedef llvm::DenseMap<unsigned, DiagnosticMappingInfo>::iterator |
| iterator; |
| typedef llvm::DenseMap<unsigned, DiagnosticMappingInfo>::const_iterator |
| const_iterator; |
| |
| void setMappingInfo(diag::kind Diag, DiagnosticMappingInfo Info) { |
| DiagMap[Diag] = Info; |
| } |
| |
| DiagnosticMappingInfo &getOrAddMappingInfo(diag::kind Diag); |
| |
| const_iterator begin() const { return DiagMap.begin(); } |
| const_iterator end() const { return DiagMap.end(); } |
| }; |
| |
| /// \brief Keeps and automatically disposes all DiagStates that we create. |
| std::list<DiagState> DiagStates; |
| |
| /// \brief Represents a point in source where the diagnostic state was |
| /// modified because of a pragma. 'Loc' can be null if the point represents |
| /// the diagnostic state modifications done through the command-line. |
| struct DiagStatePoint { |
| DiagState *State; |
| FullSourceLoc Loc; |
| DiagStatePoint(DiagState *State, FullSourceLoc Loc) |
| : State(State), Loc(Loc) { } |
| |
| bool operator<(const DiagStatePoint &RHS) const { |
| // If Loc is invalid it means it came from <command-line>, in which case |
| // we regard it as coming before any valid source location. |
| if (RHS.Loc.isInvalid()) |
| return false; |
| if (Loc.isInvalid()) |
| return true; |
| return Loc.isBeforeInTranslationUnitThan(RHS.Loc); |
| } |
| }; |
| |
| /// \brief A vector of all DiagStatePoints representing changes in diagnostic |
| /// state due to diagnostic pragmas. The vector is always sorted according to |
| /// the SourceLocation of the DiagStatePoint. |
| typedef std::vector<DiagStatePoint> DiagStatePointsTy; |
| mutable DiagStatePointsTy DiagStatePoints; |
| |
| /// \brief Keeps the DiagState that was active during each diagnostic 'push' |
| /// so we can get back at it when we 'pop'. |
| std::vector<DiagState *> DiagStateOnPushStack; |
| |
| DiagState *GetCurDiagState() const { |
| assert(!DiagStatePoints.empty()); |
| return DiagStatePoints.back().State; |
| } |
| |
| void PushDiagStatePoint(DiagState *State, SourceLocation L) { |
| FullSourceLoc Loc(L, *SourceMgr); |
| // Make sure that DiagStatePoints is always sorted according to Loc. |
| assert((Loc.isValid() || DiagStatePoints.empty()) && |
| "Adding invalid loc point after another point"); |
| assert((Loc.isInvalid() || DiagStatePoints.empty() || |
| DiagStatePoints.back().Loc.isInvalid() || |
| DiagStatePoints.back().Loc.isBeforeInTranslationUnitThan(Loc)) && |
| "Previous point loc comes after or is the same as new one"); |
| DiagStatePoints.push_back(DiagStatePoint(State, |
| FullSourceLoc(Loc, *SourceMgr))); |
| } |
| |
| /// \brief Finds the DiagStatePoint that contains the diagnostic state of |
| /// the given source location. |
| DiagStatePointsTy::iterator GetDiagStatePointForLoc(SourceLocation Loc) const; |
| |
| /// ErrorOccurred / FatalErrorOccurred - This is set to true when an error or |
| /// fatal error is emitted, and is sticky. |
| bool ErrorOccurred; |
| bool FatalErrorOccurred; |
| |
| /// \brief Indicates that an unrecoverable error has occurred. |
| bool UnrecoverableErrorOccurred; |
| |
| /// \brief Counts for DiagnosticErrorTrap to check whether an error occurred |
| /// during a parsing section, e.g. during parsing a function. |
| unsigned TrapNumErrorsOccurred; |
| unsigned TrapNumUnrecoverableErrorsOccurred; |
| |
| /// LastDiagLevel - This is the level of the last diagnostic emitted. This is |
| /// used to emit continuation diagnostics with the same level as the |
| /// diagnostic that they follow. |
| DiagnosticIDs::Level LastDiagLevel; |
| |
| unsigned NumWarnings; // Number of warnings reported |
| unsigned NumErrors; // Number of errors reported |
| unsigned NumErrorsSuppressed; // Number of errors suppressed |
| |
| /// ArgToStringFn - A function pointer that converts an opaque diagnostic |
| /// argument to a strings. This takes the modifiers and argument that was |
| /// present in the diagnostic. |
| /// |
| /// The PrevArgs array (whose length is NumPrevArgs) indicates the previous |
| /// arguments formatted for this diagnostic. Implementations of this function |
| /// can use this information to avoid redundancy across arguments. |
| /// |
| /// This is a hack to avoid a layering violation between libbasic and libsema. |
| typedef void (*ArgToStringFnTy)( |
| ArgumentKind Kind, intptr_t Val, |
| const char *Modifier, unsigned ModifierLen, |
| const char *Argument, unsigned ArgumentLen, |
| const ArgumentValue *PrevArgs, |
| unsigned NumPrevArgs, |
| SmallVectorImpl<char> &Output, |
| void *Cookie, |
| ArrayRef<intptr_t> QualTypeVals); |
| void *ArgToStringCookie; |
| ArgToStringFnTy ArgToStringFn; |
| |
| /// \brief ID of the "delayed" diagnostic, which is a (typically |
| /// fatal) diagnostic that had to be delayed because it was found |
| /// while emitting another diagnostic. |
| unsigned DelayedDiagID; |
| |
| /// \brief First string argument for the delayed diagnostic. |
| std::string DelayedDiagArg1; |
| |
| /// \brief Second string argument for the delayed diagnostic. |
| std::string DelayedDiagArg2; |
| |
| public: |
| explicit DiagnosticsEngine( |
| const IntrusiveRefCntPtr<DiagnosticIDs> &Diags, |
| DiagnosticConsumer *client = 0, |
| bool ShouldOwnClient = true); |
| ~DiagnosticsEngine(); |
| |
| const IntrusiveRefCntPtr<DiagnosticIDs> &getDiagnosticIDs() const { |
| return Diags; |
| } |
| |
| DiagnosticConsumer *getClient() { return Client; } |
| const DiagnosticConsumer *getClient() const { return Client; } |
| |
| /// \brief Determine whether this \c DiagnosticsEngine object own its client. |
| bool ownsClient() const { return OwnsDiagClient; } |
| |
| /// \brief Return the current diagnostic client along with ownership of that |
| /// client. |
| DiagnosticConsumer *takeClient() { |
| OwnsDiagClient = false; |
| return Client; |
| } |
| |
| bool hasSourceManager() const { return SourceMgr != 0; } |
| SourceManager &getSourceManager() const { |
| assert(SourceMgr && "SourceManager not set!"); |
| return *SourceMgr; |
| } |
| void setSourceManager(SourceManager *SrcMgr) { SourceMgr = SrcMgr; } |
| |
| //===--------------------------------------------------------------------===// |
| // DiagnosticsEngine characterization methods, used by a client to customize |
| // how diagnostics are emitted. |
| // |
| |
| /// pushMappings - Copies the current DiagMappings and pushes the new copy |
| /// onto the top of the stack. |
| void pushMappings(SourceLocation Loc); |
| |
| /// popMappings - Pops the current DiagMappings off the top of the stack |
| /// causing the new top of the stack to be the active mappings. Returns |
| /// true if the pop happens, false if there is only one DiagMapping on the |
| /// stack. |
| bool popMappings(SourceLocation Loc); |
| |
| /// \brief Set the diagnostic client associated with this diagnostic object. |
| /// |
| /// \param ShouldOwnClient true if the diagnostic object should take |
| /// ownership of \c client. |
| void setClient(DiagnosticConsumer *client, bool ShouldOwnClient = true); |
| |
| /// setErrorLimit - Specify a limit for the number of errors we should |
| /// emit before giving up. Zero disables the limit. |
| void setErrorLimit(unsigned Limit) { ErrorLimit = Limit; } |
| |
| /// \brief Specify the maximum number of template instantiation |
| /// notes to emit along with a given diagnostic. |
| void setTemplateBacktraceLimit(unsigned Limit) { |
| TemplateBacktraceLimit = Limit; |
| } |
| |
| /// \brief Retrieve the maximum number of template instantiation |
| /// notes to emit along with a given diagnostic. |
| unsigned getTemplateBacktraceLimit() const { |
| return TemplateBacktraceLimit; |
| } |
| |
| /// \brief Specify the maximum number of constexpr evaluation |
| /// notes to emit along with a given diagnostic. |
| void setConstexprBacktraceLimit(unsigned Limit) { |
| ConstexprBacktraceLimit = Limit; |
| } |
| |
| /// \brief Retrieve the maximum number of constexpr evaluation |
| /// notes to emit along with a given diagnostic. |
| unsigned getConstexprBacktraceLimit() const { |
| return ConstexprBacktraceLimit; |
| } |
| |
| /// setIgnoreAllWarnings - When set to true, any unmapped warnings are |
| /// ignored. If this and WarningsAsErrors are both set, then this one wins. |
| void setIgnoreAllWarnings(bool Val) { IgnoreAllWarnings = Val; } |
| bool getIgnoreAllWarnings() const { return IgnoreAllWarnings; } |
| |
| /// setEnableAllWarnings - When set to true, any unmapped ignored warnings |
| /// are no longer ignored. If this and IgnoreAllWarnings are both set, |
| /// then that one wins. |
| void setEnableAllWarnings(bool Val) { EnableAllWarnings = Val; } |
| bool getEnableAllWarnngs() const { return EnableAllWarnings; } |
| |
| /// setWarningsAsErrors - When set to true, any warnings reported are issued |
| /// as errors. |
| void setWarningsAsErrors(bool Val) { WarningsAsErrors = Val; } |
| bool getWarningsAsErrors() const { return WarningsAsErrors; } |
| |
| /// setErrorsAsFatal - When set to true, any error reported is made a |
| /// fatal error. |
| void setErrorsAsFatal(bool Val) { ErrorsAsFatal = Val; } |
| bool getErrorsAsFatal() const { return ErrorsAsFatal; } |
| |
| /// setSuppressSystemWarnings - When set to true mask warnings that |
| /// come from system headers. |
| void setSuppressSystemWarnings(bool Val) { SuppressSystemWarnings = Val; } |
| bool getSuppressSystemWarnings() const { return SuppressSystemWarnings; } |
| |
| /// \brief Suppress all diagnostics, to silence the front end when we |
| /// know that we don't want any more diagnostics to be passed along to the |
| /// client |
| void setSuppressAllDiagnostics(bool Val = true) { |
| SuppressAllDiagnostics = Val; |
| } |
| bool getSuppressAllDiagnostics() const { return SuppressAllDiagnostics; } |
| |
| /// \brief Specify which overload candidates to show when overload resolution |
| /// fails. By default, we show all candidates. |
| void setShowOverloads(OverloadsShown Val) { |
| ShowOverloads = Val; |
| } |
| OverloadsShown getShowOverloads() const { return ShowOverloads; } |
| |
| /// \brief Pretend that the last diagnostic issued was ignored. This can |
| /// be used by clients who suppress diagnostics themselves. |
| void setLastDiagnosticIgnored() { |
| LastDiagLevel = DiagnosticIDs::Ignored; |
| } |
| |
| /// setExtensionHandlingBehavior - This controls whether otherwise-unmapped |
| /// extension diagnostics are mapped onto ignore/warning/error. This |
| /// corresponds to the GCC -pedantic and -pedantic-errors option. |
| void setExtensionHandlingBehavior(ExtensionHandling H) { |
| ExtBehavior = H; |
| } |
| ExtensionHandling getExtensionHandlingBehavior() const { return ExtBehavior; } |
| |
| /// AllExtensionsSilenced - This is a counter bumped when an __extension__ |
| /// block is encountered. When non-zero, all extension diagnostics are |
| /// entirely silenced, no matter how they are mapped. |
| void IncrementAllExtensionsSilenced() { ++AllExtensionsSilenced; } |
| void DecrementAllExtensionsSilenced() { --AllExtensionsSilenced; } |
| bool hasAllExtensionsSilenced() { return AllExtensionsSilenced != 0; } |
| |
| /// \brief This allows the client to specify that certain |
| /// warnings are ignored. Notes can never be mapped, errors can only be |
| /// mapped to fatal, and WARNINGs and EXTENSIONs can be mapped arbitrarily. |
| /// |
| /// \param Loc The source location that this change of diagnostic state should |
| /// take affect. It can be null if we are setting the latest state. |
| void setDiagnosticMapping(diag::kind Diag, diag::Mapping Map, |
| SourceLocation Loc); |
| |
| /// setDiagnosticGroupMapping - Change an entire diagnostic group (e.g. |
| /// "unknown-pragmas" to have the specified mapping. This returns true and |
| /// ignores the request if "Group" was unknown, false otherwise. |
| /// |
| /// 'Loc' is the source location that this change of diagnostic state should |
| /// take affect. It can be null if we are setting the state from command-line. |
| bool setDiagnosticGroupMapping(StringRef Group, diag::Mapping Map, |
| SourceLocation Loc = SourceLocation()); |
| |
| /// \brief Set the warning-as-error flag for the given diagnostic. This |
| /// function always only operates on the current diagnostic state. |
| void setDiagnosticWarningAsError(diag::kind Diag, bool Enabled); |
| |
| /// \brief Set the warning-as-error flag for the given diagnostic group. This |
| /// function always only operates on the current diagnostic state. |
| /// |
| /// \returns True if the given group is unknown, false otherwise. |
| bool setDiagnosticGroupWarningAsError(StringRef Group, bool Enabled); |
| |
| /// \brief Set the error-as-fatal flag for the given diagnostic. This function |
| /// always only operates on the current diagnostic state. |
| void setDiagnosticErrorAsFatal(diag::kind Diag, bool Enabled); |
| |
| /// \brief Set the error-as-fatal flag for the given diagnostic group. This |
| /// function always only operates on the current diagnostic state. |
| /// |
| /// \returns True if the given group is unknown, false otherwise. |
| bool setDiagnosticGroupErrorAsFatal(StringRef Group, bool Enabled); |
| |
| /// \brief Add the specified mapping to all diagnostics. Mainly to be used |
| /// by -Wno-everything to disable all warnings but allow subsequent -W options |
| /// to enable specific warnings. |
| void setMappingToAllDiagnostics(diag::Mapping Map, |
| SourceLocation Loc = SourceLocation()); |
| |
| bool hasErrorOccurred() const { return ErrorOccurred; } |
| bool hasFatalErrorOccurred() const { return FatalErrorOccurred; } |
| |
| /// \brief Determine whether any kind of unrecoverable error has occurred. |
| bool hasUnrecoverableErrorOccurred() const { |
| return FatalErrorOccurred || UnrecoverableErrorOccurred; |
| } |
| |
| unsigned getNumWarnings() const { return NumWarnings; } |
| |
| void setNumWarnings(unsigned NumWarnings) { |
| this->NumWarnings = NumWarnings; |
| } |
| |
| /// getCustomDiagID - Return an ID for a diagnostic with the specified message |
| /// and level. If this is the first request for this diagnosic, it is |
| /// registered and created, otherwise the existing ID is returned. |
| unsigned getCustomDiagID(Level L, StringRef Message) { |
| return Diags->getCustomDiagID((DiagnosticIDs::Level)L, Message); |
| } |
| |
| /// ConvertArgToString - This method converts a diagnostic argument (as an |
| /// intptr_t) into the string that represents it. |
| void ConvertArgToString(ArgumentKind Kind, intptr_t Val, |
| const char *Modifier, unsigned ModLen, |
| const char *Argument, unsigned ArgLen, |
| const ArgumentValue *PrevArgs, unsigned NumPrevArgs, |
| SmallVectorImpl<char> &Output, |
| SmallVectorImpl<intptr_t> &QualTypeVals) const { |
| ArgToStringFn(Kind, Val, Modifier, ModLen, Argument, ArgLen, |
| PrevArgs, NumPrevArgs, Output, ArgToStringCookie, |
| QualTypeVals); |
| } |
| |
| void SetArgToStringFn(ArgToStringFnTy Fn, void *Cookie) { |
| ArgToStringFn = Fn; |
| ArgToStringCookie = Cookie; |
| } |
| |
| /// \brief Reset the state of the diagnostic object to its initial |
| /// configuration. |
| void Reset(); |
| |
| //===--------------------------------------------------------------------===// |
| // DiagnosticsEngine classification and reporting interfaces. |
| // |
| |
| /// \brief Based on the way the client configured the DiagnosticsEngine |
| /// object, classify the specified diagnostic ID into a Level, consumable by |
| /// the DiagnosticConsumer. |
| /// |
| /// \param Loc The source location we are interested in finding out the |
| /// diagnostic state. Can be null in order to query the latest state. |
| Level getDiagnosticLevel(unsigned DiagID, SourceLocation Loc) const { |
| return (Level)Diags->getDiagnosticLevel(DiagID, Loc, *this); |
| } |
| |
| /// Report - Issue the message to the client. @c DiagID is a member of the |
| /// @c diag::kind enum. This actually returns aninstance of DiagnosticBuilder |
| /// which emits the diagnostics (through @c ProcessDiag) when it is destroyed. |
| /// @c Pos represents the source location associated with the diagnostic, |
| /// which can be an invalid location if no position information is available. |
| inline DiagnosticBuilder Report(SourceLocation Pos, unsigned DiagID); |
| inline DiagnosticBuilder Report(unsigned DiagID); |
| |
| void Report(const StoredDiagnostic &storedDiag); |
| |
| /// \brief Determine whethere there is already a diagnostic in flight. |
| bool isDiagnosticInFlight() const { return CurDiagID != ~0U; } |
| |
| /// \brief Set the "delayed" diagnostic that will be emitted once |
| /// the current diagnostic completes. |
| /// |
| /// If a diagnostic is already in-flight but the front end must |
| /// report a problem (e.g., with an inconsistent file system |
| /// state), this routine sets a "delayed" diagnostic that will be |
| /// emitted after the current diagnostic completes. This should |
| /// only be used for fatal errors detected at inconvenient |
| /// times. If emitting a delayed diagnostic causes a second delayed |
| /// diagnostic to be introduced, that second delayed diagnostic |
| /// will be ignored. |
| /// |
| /// \param DiagID The ID of the diagnostic being delayed. |
| /// |
| /// \param Arg1 A string argument that will be provided to the |
| /// diagnostic. A copy of this string will be stored in the |
| /// DiagnosticsEngine object itself. |
| /// |
| /// \param Arg2 A string argument that will be provided to the |
| /// diagnostic. A copy of this string will be stored in the |
| /// DiagnosticsEngine object itself. |
| void SetDelayedDiagnostic(unsigned DiagID, StringRef Arg1 = "", |
| StringRef Arg2 = ""); |
| |
| /// \brief Clear out the current diagnostic. |
| void Clear() { CurDiagID = ~0U; } |
| |
| private: |
| /// \brief Report the delayed diagnostic. |
| void ReportDelayed(); |
| |
| // This is private state used by DiagnosticBuilder. We put it here instead of |
| // in DiagnosticBuilder in order to keep DiagnosticBuilder a small lightweight |
| // object. This implementation choice means that we can only have one |
| // diagnostic "in flight" at a time, but this seems to be a reasonable |
| // tradeoff to keep these objects small. Assertions verify that only one |
| // diagnostic is in flight at a time. |
| friend class DiagnosticIDs; |
| friend class DiagnosticBuilder; |
| friend class Diagnostic; |
| friend class PartialDiagnostic; |
| friend class DiagnosticErrorTrap; |
| |
| /// CurDiagLoc - This is the location of the current diagnostic that is in |
| /// flight. |
| SourceLocation CurDiagLoc; |
| |
| /// CurDiagID - This is the ID of the current diagnostic that is in flight. |
| /// This is set to ~0U when there is no diagnostic in flight. |
| unsigned CurDiagID; |
| |
| enum { |
| /// MaxArguments - The maximum number of arguments we can hold. We currently |
| /// only support up to 10 arguments (%0-%9). A single diagnostic with more |
| /// than that almost certainly has to be simplified anyway. |
| MaxArguments = 10, |
| |
| /// MaxRanges - The maximum number of ranges we can hold. |
| MaxRanges = 10, |
| |
| /// MaxFixItHints - The maximum number of ranges we can hold. |
| MaxFixItHints = 10 |
| }; |
| |
| /// NumDiagArgs - This contains the number of entries in Arguments. |
| signed char NumDiagArgs; |
| /// NumDiagRanges - This is the number of ranges in the DiagRanges array. |
| unsigned char NumDiagRanges; |
| /// NumDiagFixItHints - This is the number of hints in the DiagFixItHints |
| /// array. |
| unsigned char NumDiagFixItHints; |
| |
| /// DiagArgumentsKind - This is an array of ArgumentKind::ArgumentKind enum |
| /// values, with one for each argument. This specifies whether the argument |
| /// is in DiagArgumentsStr or in DiagArguments. |
| unsigned char DiagArgumentsKind[MaxArguments]; |
| |
| /// DiagArgumentsStr - This holds the values of each string argument for the |
| /// current diagnostic. This value is only used when the corresponding |
| /// ArgumentKind is ak_std_string. |
| std::string DiagArgumentsStr[MaxArguments]; |
| |
| /// DiagArgumentsVal - The values for the various substitution positions. This |
| /// is used when the argument is not an std::string. The specific value is |
| /// mangled into an intptr_t and the interpretation depends on exactly what |
| /// sort of argument kind it is. |
| intptr_t DiagArgumentsVal[MaxArguments]; |
| |
| /// DiagRanges - The list of ranges added to this diagnostic. |
| CharSourceRange DiagRanges[MaxRanges]; |
| |
| /// FixItHints - If valid, provides a hint with some code to insert, remove, |
| /// or modify at a particular position. |
| FixItHint DiagFixItHints[MaxFixItHints]; |
| |
| DiagnosticMappingInfo makeMappingInfo(diag::Mapping Map, SourceLocation L) { |
| bool isPragma = L.isValid(); |
| DiagnosticMappingInfo MappingInfo = DiagnosticMappingInfo::Make( |
| Map, /*IsUser=*/true, isPragma); |
| |
| // If this is a pragma mapping, then set the diagnostic mapping flags so |
| // that we override command line options. |
| if (isPragma) { |
| MappingInfo.setNoWarningAsError(true); |
| MappingInfo.setNoErrorAsFatal(true); |
| } |
| |
| return MappingInfo; |
| } |
| |
| /// ProcessDiag - This is the method used to report a diagnostic that is |
| /// finally fully formed. |
| /// |
| /// \returns true if the diagnostic was emitted, false if it was |
| /// suppressed. |
| bool ProcessDiag() { |
| return Diags->ProcessDiag(*this); |
| } |
| |
| /// @name Diagnostic Emission |
| /// @{ |
| protected: |
| // Sema requires access to the following functions because the current design |
| // of SFINAE requires it to use its own SemaDiagnosticBuilder, which needs to |
| // access us directly to ensure we minimize the emitted code for the common |
| // Sema::Diag() patterns. |
| friend class Sema; |
| |
| /// \brief Emit the current diagnostic and clear the diagnostic state. |
| bool EmitCurrentDiagnostic(); |
| |
| unsigned getCurrentDiagID() const { return CurDiagID; } |
| |
| SourceLocation getCurrentDiagLoc() const { return CurDiagLoc; } |
| |
| /// @} |
| |
| friend class ASTReader; |
| friend class ASTWriter; |
| }; |
| |
| /// \brief RAII class that determines when any errors have occurred |
| /// between the time the instance was created and the time it was |
| /// queried. |
| class DiagnosticErrorTrap { |
| DiagnosticsEngine &Diag; |
| unsigned NumErrors; |
| unsigned NumUnrecoverableErrors; |
| |
| public: |
| explicit DiagnosticErrorTrap(DiagnosticsEngine &Diag) |
| : Diag(Diag) { reset(); } |
| |
| /// \brief Determine whether any errors have occurred since this |
| /// object instance was created. |
| bool hasErrorOccurred() const { |
| return Diag.TrapNumErrorsOccurred > NumErrors; |
| } |
| |
| /// \brief Determine whether any unrecoverable errors have occurred since this |
| /// object instance was created. |
| bool hasUnrecoverableErrorOccurred() const { |
| return Diag.TrapNumUnrecoverableErrorsOccurred > NumUnrecoverableErrors; |
| } |
| |
| // Set to initial state of "no errors occurred". |
| void reset() { |
| NumErrors = Diag.TrapNumErrorsOccurred; |
| NumUnrecoverableErrors = Diag.TrapNumUnrecoverableErrorsOccurred; |
| } |
| }; |
| |
| //===----------------------------------------------------------------------===// |
| // DiagnosticBuilder |
| //===----------------------------------------------------------------------===// |
| |
| /// DiagnosticBuilder - This is a little helper class used to produce |
| /// diagnostics. This is constructed by the DiagnosticsEngine::Report method, |
| /// and allows insertion of extra information (arguments and source ranges) into |
| /// the currently "in flight" diagnostic. When the temporary for the builder is |
| /// destroyed, the diagnostic is issued. |
| /// |
| /// Note that many of these will be created as temporary objects (many call |
| /// sites), so we want them to be small and we never want their address taken. |
| /// This ensures that compilers with somewhat reasonable optimizers will promote |
| /// the common fields to registers, eliminating increments of the NumArgs field, |
| /// for example. |
| class DiagnosticBuilder { |
| mutable DiagnosticsEngine *DiagObj; |
| mutable unsigned NumArgs, NumRanges, NumFixits; |
| |
| /// \brief Status variable indicating if this diagnostic is still active. |
| /// |
| // NOTE: This field is redundant with DiagObj (IsActive iff (DiagObj == 0)), |
| // but LLVM is not currently smart enough to eliminate the null check that |
| // Emit() would end up with if we used that as our status variable. |
| mutable bool IsActive; |
| |
| void operator=(const DiagnosticBuilder&); // DO NOT IMPLEMENT |
| friend class DiagnosticsEngine; |
| |
| DiagnosticBuilder() |
| : DiagObj(0), NumArgs(0), NumRanges(0), NumFixits(0), IsActive(false) { } |
| |
| explicit DiagnosticBuilder(DiagnosticsEngine *diagObj) |
| : DiagObj(diagObj), NumArgs(0), NumRanges(0), NumFixits(0), IsActive(true) { |
| assert(diagObj && "DiagnosticBuilder requires a valid DiagnosticsEngine!"); |
| } |
| |
| friend class PartialDiagnostic; |
| |
| protected: |
| void FlushCounts() { |
| DiagObj->NumDiagArgs = NumArgs; |
| DiagObj->NumDiagRanges = NumRanges; |
| DiagObj->NumDiagFixItHints = NumFixits; |
| } |
| |
| /// \brief Clear out the current diagnostic. |
| void Clear() const { |
| DiagObj = 0; |
| IsActive = false; |
| } |
| |
| /// isActive - Determine whether this diagnostic is still active. |
| bool isActive() const { return IsActive; } |
| |
| /// \brief Force the diagnostic builder to emit the diagnostic now. |
| /// |
| /// Once this function has been called, the DiagnosticBuilder object |
| /// should not be used again before it is destroyed. |
| /// |
| /// \returns true if a diagnostic was emitted, false if the |
| /// diagnostic was suppressed. |
| bool Emit() { |
| // If this diagnostic is inactive, then its soul was stolen by the copy ctor |
| // (or by a subclass, as in SemaDiagnosticBuilder). |
| if (!isActive()) return false; |
| |
| // When emitting diagnostics, we set the final argument count into |
| // the DiagnosticsEngine object. |
| FlushCounts(); |
| |
| // Process the diagnostic. |
| bool Result = DiagObj->EmitCurrentDiagnostic(); |
| |
| // This diagnostic is dead. |
| Clear(); |
| |
| return Result; |
| } |
| |
| public: |
| /// Copy constructor. When copied, this "takes" the diagnostic info from the |
| /// input and neuters it. |
| DiagnosticBuilder(const DiagnosticBuilder &D) { |
| DiagObj = D.DiagObj; |
| IsActive = D.IsActive; |
| D.Clear(); |
| NumArgs = D.NumArgs; |
| NumRanges = D.NumRanges; |
| NumFixits = D.NumFixits; |
| } |
| |
| /// \brief Retrieve an empty diagnostic builder. |
| static DiagnosticBuilder getEmpty() { |
| return DiagnosticBuilder(); |
| } |
| |
| /// Destructor - The dtor emits the diagnostic. |
| ~DiagnosticBuilder() { |
| Emit(); |
| } |
| |
| /// Operator bool: conversion of DiagnosticBuilder to bool always returns |
| /// true. This allows is to be used in boolean error contexts like: |
| /// return Diag(...); |
| operator bool() const { return true; } |
| |
| void AddString(StringRef S) const { |
| assert(isActive() && "Clients must not add to cleared diagnostic!"); |
| assert(NumArgs < DiagnosticsEngine::MaxArguments && |
| "Too many arguments to diagnostic!"); |
| DiagObj->DiagArgumentsKind[NumArgs] = DiagnosticsEngine::ak_std_string; |
| DiagObj->DiagArgumentsStr[NumArgs++] = S; |
| } |
| |
| void AddTaggedVal(intptr_t V, DiagnosticsEngine::ArgumentKind Kind) const { |
| assert(isActive() && "Clients must not add to cleared diagnostic!"); |
| assert(NumArgs < DiagnosticsEngine::MaxArguments && |
| "Too many arguments to diagnostic!"); |
| DiagObj->DiagArgumentsKind[NumArgs] = Kind; |
| DiagObj->DiagArgumentsVal[NumArgs++] = V; |
| } |
| |
| void AddSourceRange(const CharSourceRange &R) const { |
| assert(isActive() && "Clients must not add to cleared diagnostic!"); |
| assert(NumRanges < DiagnosticsEngine::MaxRanges && |
| "Too many arguments to diagnostic!"); |
| DiagObj->DiagRanges[NumRanges++] = R; |
| } |
| |
| void AddFixItHint(const FixItHint &Hint) const { |
| assert(isActive() && "Clients must not add to cleared diagnostic!"); |
| assert(NumFixits < DiagnosticsEngine::MaxFixItHints && |
| "Too many arguments to diagnostic!"); |
| DiagObj->DiagFixItHints[NumFixits++] = Hint; |
| } |
| }; |
| |
| inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, |
| StringRef S) { |
| DB.AddString(S); |
| return DB; |
| } |
| |
| inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, |
| const char *Str) { |
| DB.AddTaggedVal(reinterpret_cast<intptr_t>(Str), |
| DiagnosticsEngine::ak_c_string); |
| return DB; |
| } |
| |
| inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, int I) { |
| DB.AddTaggedVal(I, DiagnosticsEngine::ak_sint); |
| return DB; |
| } |
| |
| inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB,bool I) { |
| DB.AddTaggedVal(I, DiagnosticsEngine::ak_sint); |
| return DB; |
| } |
| |
| inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, |
| unsigned I) { |
| DB.AddTaggedVal(I, DiagnosticsEngine::ak_uint); |
| return DB; |
| } |
| |
| inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, |
| const IdentifierInfo *II) { |
| DB.AddTaggedVal(reinterpret_cast<intptr_t>(II), |
| DiagnosticsEngine::ak_identifierinfo); |
| return DB; |
| } |
| |
| // Adds a DeclContext to the diagnostic. The enable_if template magic is here |
| // so that we only match those arguments that are (statically) DeclContexts; |
| // other arguments that derive from DeclContext (e.g., RecordDecls) will not |
| // match. |
| template<typename T> |
| inline |
| typename llvm::enable_if<llvm::is_same<T, DeclContext>, |
| const DiagnosticBuilder &>::type |
| operator<<(const DiagnosticBuilder &DB, T *DC) { |
| DB.AddTaggedVal(reinterpret_cast<intptr_t>(DC), |
| DiagnosticsEngine::ak_declcontext); |
| return DB; |
| } |
| |
| inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, |
| const SourceRange &R) { |
| DB.AddSourceRange(CharSourceRange::getTokenRange(R)); |
| return DB; |
| } |
| |
| inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, |
| const CharSourceRange &R) { |
| DB.AddSourceRange(R); |
| return DB; |
| } |
| |
| inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, |
| const FixItHint &Hint) { |
| if (!Hint.isNull()) |
| DB.AddFixItHint(Hint); |
| return DB; |
| } |
| |
| /// Report - Issue the message to the client. DiagID is a member of the |
| /// diag::kind enum. This actually returns a new instance of DiagnosticBuilder |
| /// which emits the diagnostics (through ProcessDiag) when it is destroyed. |
| inline DiagnosticBuilder DiagnosticsEngine::Report(SourceLocation Loc, |
| unsigned DiagID){ |
| assert(CurDiagID == ~0U && "Multiple diagnostics in flight at once!"); |
| CurDiagLoc = Loc; |
| CurDiagID = DiagID; |
| return DiagnosticBuilder(this); |
| } |
| inline DiagnosticBuilder DiagnosticsEngine::Report(unsigned DiagID) { |
| return Report(SourceLocation(), DiagID); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Diagnostic |
| //===----------------------------------------------------------------------===// |
| |
| /// Diagnostic - This is a little helper class (which is basically a smart |
| /// pointer that forward info from DiagnosticsEngine) that allows clients to |
| /// enquire about the currently in-flight diagnostic. |
| class Diagnostic { |
| const DiagnosticsEngine *DiagObj; |
| StringRef StoredDiagMessage; |
| public: |
| explicit Diagnostic(const DiagnosticsEngine *DO) : DiagObj(DO) {} |
| Diagnostic(const DiagnosticsEngine *DO, StringRef storedDiagMessage) |
| : DiagObj(DO), StoredDiagMessage(storedDiagMessage) {} |
| |
| const DiagnosticsEngine *getDiags() const { return DiagObj; } |
| unsigned getID() const { return DiagObj->CurDiagID; } |
| const SourceLocation &getLocation() const { return DiagObj->CurDiagLoc; } |
| bool hasSourceManager() const { return DiagObj->hasSourceManager(); } |
| SourceManager &getSourceManager() const { return DiagObj->getSourceManager();} |
| |
| unsigned getNumArgs() const { return DiagObj->NumDiagArgs; } |
| |
| /// getArgKind - Return the kind of the specified index. Based on the kind |
| /// of argument, the accessors below can be used to get the value. |
| DiagnosticsEngine::ArgumentKind getArgKind(unsigned Idx) const { |
| assert(Idx < getNumArgs() && "Argument index out of range!"); |
| return (DiagnosticsEngine::ArgumentKind)DiagObj->DiagArgumentsKind[Idx]; |
| } |
| |
| /// getArgStdStr - Return the provided argument string specified by Idx. |
| const std::string &getArgStdStr(unsigned Idx) const { |
| assert(getArgKind(Idx) == DiagnosticsEngine::ak_std_string && |
| "invalid argument accessor!"); |
| return DiagObj->DiagArgumentsStr[Idx]; |
| } |
| |
| /// getArgCStr - Return the specified C string argument. |
| const char *getArgCStr(unsigned Idx) const { |
| assert(getArgKind(Idx) == DiagnosticsEngine::ak_c_string && |
| "invalid argument accessor!"); |
| return reinterpret_cast<const char*>(DiagObj->DiagArgumentsVal[Idx]); |
| } |
| |
| /// getArgSInt - Return the specified signed integer argument. |
| int getArgSInt(unsigned Idx) const { |
| assert(getArgKind(Idx) == DiagnosticsEngine::ak_sint && |
| "invalid argument accessor!"); |
| return (int)DiagObj->DiagArgumentsVal[Idx]; |
| } |
| |
| /// getArgUInt - Return the specified unsigned integer argument. |
| unsigned getArgUInt(unsigned Idx) const { |
| assert(getArgKind(Idx) == DiagnosticsEngine::ak_uint && |
| "invalid argument accessor!"); |
| return (unsigned)DiagObj->DiagArgumentsVal[Idx]; |
| } |
| |
| /// getArgIdentifier - Return the specified IdentifierInfo argument. |
| const IdentifierInfo *getArgIdentifier(unsigned Idx) const { |
| assert(getArgKind(Idx) == DiagnosticsEngine::ak_identifierinfo && |
| "invalid argument accessor!"); |
| return reinterpret_cast<IdentifierInfo*>(DiagObj->DiagArgumentsVal[Idx]); |
| } |
| |
| /// getRawArg - Return the specified non-string argument in an opaque form. |
| intptr_t getRawArg(unsigned Idx) const { |
| assert(getArgKind(Idx) != DiagnosticsEngine::ak_std_string && |
| "invalid argument accessor!"); |
| return DiagObj->DiagArgumentsVal[Idx]; |
| } |
| |
| |
| /// getNumRanges - Return the number of source ranges associated with this |
| /// diagnostic. |
| unsigned getNumRanges() const { |
| return DiagObj->NumDiagRanges; |
| } |
| |
| const CharSourceRange &getRange(unsigned Idx) const { |
| assert(Idx < DiagObj->NumDiagRanges && "Invalid diagnostic range index!"); |
| return DiagObj->DiagRanges[Idx]; |
| } |
| |
| /// \brief Return an array reference for this diagnostic's ranges. |
| ArrayRef<CharSourceRange> getRanges() const { |
| return llvm::makeArrayRef(DiagObj->DiagRanges, DiagObj->NumDiagRanges); |
| } |
| |
| unsigned getNumFixItHints() const { |
| return DiagObj->NumDiagFixItHints; |
| } |
| |
| const FixItHint &getFixItHint(unsigned Idx) const { |
| assert(Idx < getNumFixItHints() && "Invalid index!"); |
| return DiagObj->DiagFixItHints[Idx]; |
| } |
| |
| const FixItHint *getFixItHints() const { |
| return getNumFixItHints()? DiagObj->DiagFixItHints : 0; |
| } |
| |
| /// FormatDiagnostic - Format this diagnostic into a string, substituting the |
| /// formal arguments into the %0 slots. The result is appended onto the Str |
| /// array. |
| void FormatDiagnostic(SmallVectorImpl<char> &OutStr) const; |
| |
| /// FormatDiagnostic - Format the given format-string into the |
| /// output buffer using the arguments stored in this diagnostic. |
| void FormatDiagnostic(const char *DiagStr, const char *DiagEnd, |
| SmallVectorImpl<char> &OutStr) const; |
| }; |
| |
| /** |
| * \brief Represents a diagnostic in a form that can be retained until its |
| * corresponding source manager is destroyed. |
| */ |
| class StoredDiagnostic { |
| unsigned ID; |
| DiagnosticsEngine::Level Level; |
| FullSourceLoc Loc; |
| std::string Message; |
| std::vector<CharSourceRange> Ranges; |
| std::vector<FixItHint> FixIts; |
| |
| public: |
| StoredDiagnostic(); |
| StoredDiagnostic(DiagnosticsEngine::Level Level, const Diagnostic &Info); |
| StoredDiagnostic(DiagnosticsEngine::Level Level, unsigned ID, |
| StringRef Message); |
| StoredDiagnostic(DiagnosticsEngine::Level Level, unsigned ID, |
| StringRef Message, FullSourceLoc Loc, |
| ArrayRef<CharSourceRange> Ranges, |
| ArrayRef<FixItHint> Fixits); |
| ~StoredDiagnostic(); |
| |
| /// \brief Evaluates true when this object stores a diagnostic. |
| operator bool() const { return Message.size() > 0; } |
| |
| unsigned getID() const { return ID; } |
| DiagnosticsEngine::Level getLevel() const { return Level; } |
| const FullSourceLoc &getLocation() const { return Loc; } |
| StringRef getMessage() const { return Message; } |
| |
| void setLocation(FullSourceLoc Loc) { this->Loc = Loc; } |
| |
| typedef std::vector<CharSourceRange>::const_iterator range_iterator; |
| range_iterator range_begin() const { return Ranges.begin(); } |
| range_iterator range_end() const { return Ranges.end(); } |
| unsigned range_size() const { return Ranges.size(); } |
| |
| ArrayRef<CharSourceRange> getRanges() const { |
| return llvm::makeArrayRef(Ranges); |
| } |
| |
| |
| typedef std::vector<FixItHint>::const_iterator fixit_iterator; |
| fixit_iterator fixit_begin() const { return FixIts.begin(); } |
| fixit_iterator fixit_end() const { return FixIts.end(); } |
| unsigned fixit_size() const { return FixIts.size(); } |
| |
| ArrayRef<FixItHint> getFixIts() const { |
| return llvm::makeArrayRef(FixIts); |
| } |
| }; |
| |
| /// DiagnosticConsumer - This is an abstract interface implemented by clients of |
| /// the front-end, which formats and prints fully processed diagnostics. |
| class DiagnosticConsumer { |
| protected: |
| unsigned NumWarnings; // Number of warnings reported |
| unsigned NumErrors; // Number of errors reported |
| |
| public: |
| DiagnosticConsumer() : NumWarnings(0), NumErrors(0) { } |
| |
| unsigned getNumErrors() const { return NumErrors; } |
| unsigned getNumWarnings() const { return NumWarnings; } |
| virtual void clear() { NumWarnings = NumErrors = 0; } |
| |
| virtual ~DiagnosticConsumer(); |
| |
| /// BeginSourceFile - Callback to inform the diagnostic client that processing |
| /// of a source file is beginning. |
| /// |
| /// Note that diagnostics may be emitted outside the processing of a source |
| /// file, for example during the parsing of command line options. However, |
| /// diagnostics with source range information are required to only be emitted |
| /// in between BeginSourceFile() and EndSourceFile(). |
| /// |
| /// \arg LO - The language options for the source file being processed. |
| /// \arg PP - The preprocessor object being used for the source; this optional |
| /// and may not be present, for example when processing AST source files. |
| virtual void BeginSourceFile(const LangOptions &LangOpts, |
| const Preprocessor *PP = 0) {} |
| |
| /// EndSourceFile - Callback to inform the diagnostic client that processing |
| /// of a source file has ended. The diagnostic client should assume that any |
| /// objects made available via \see BeginSourceFile() are inaccessible. |
| virtual void EndSourceFile() {} |
| |
| /// \brief Callback to inform the diagnostic client that processing of all |
| /// source files has ended. |
| virtual void finish() {} |
| |
| /// IncludeInDiagnosticCounts - This method (whose default implementation |
| /// returns true) indicates whether the diagnostics handled by this |
| /// DiagnosticConsumer should be included in the number of diagnostics |
| /// reported by DiagnosticsEngine. |
| virtual bool IncludeInDiagnosticCounts() const; |
| |
| /// HandleDiagnostic - Handle this diagnostic, reporting it to the user or |
| /// capturing it to a log as needed. |
| /// |
| /// Default implementation just keeps track of the total number of warnings |
| /// and errors. |
| virtual void HandleDiagnostic(DiagnosticsEngine::Level DiagLevel, |
| const Diagnostic &Info); |
| |
| /// \brief Clone the diagnostic consumer, producing an equivalent consumer |
| /// that can be used in a different context. |
| virtual DiagnosticConsumer *clone(DiagnosticsEngine &Diags) const = 0; |
| }; |
| |
| /// IgnoringDiagConsumer - This is a diagnostic client that just ignores all |
| /// diags. |
| class IgnoringDiagConsumer : public DiagnosticConsumer { |
| virtual void anchor(); |
| void HandleDiagnostic(DiagnosticsEngine::Level DiagLevel, |
| const Diagnostic &Info) { |
| // Just ignore it. |
| } |
| DiagnosticConsumer *clone(DiagnosticsEngine &Diags) const { |
| return new IgnoringDiagConsumer(); |
| } |
| }; |
| |
| } // end namespace clang |
| |
| #endif |