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//===- AnalyzerOptions.h - Analysis Engine Options --------------*- C++ -*-===//

//

// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

// See https://llvm.org/LICENSE.txt for license information.

// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

//

//===----------------------------------------------------------------------===//

//

// This header defines various options for the static analyzer that are set

// by the frontend and are consulted throughout the analyzer.

//

//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_STATICANALYZER_CORE_ANALYZEROPTIONS_H

#define LLVM_CLANG_STATICANALYZER_CORE_ANALYZEROPTIONS_H

#include "clang/Analysis/PathDiagnostic.h"

#include "clang/Basic/LLVM.h"

#include "llvm/ADT/IntrusiveRefCntPtr.h"

#include "llvm/ADT/StringMap.h"

#include "llvm/ADT/StringRef.h"

#include <string>

#include <utility>

#include <vector>

namespace clang {

namespace ento {

class CheckerBase;

} // namespace ento

/// AnalysisConstraints - Set of available constraint models.

enum AnalysisConstraints {

#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) NAME##Model,

#include "clang/StaticAnalyzer/Core/Analyses.def"

NumConstraints

};

/// AnalysisDiagClients - Set of available diagnostic clients for rendering

///  analysis results.

enum AnalysisDiagClients {

#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) PD_##NAME,

#include "clang/StaticAnalyzer/Core/Analyses.def"

PD_NONE,

NUM_ANALYSIS_DIAG_CLIENTS

};

/// AnalysisPurgeModes - Set of available strategies for dead symbol removal.

enum AnalysisPurgeMode {

#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) NAME,

#include "clang/StaticAnalyzer/Core/Analyses.def"

NumPurgeModes

};

/// AnalysisInlineFunctionSelection - Set of inlining function selection heuristics.

enum AnalysisInliningMode {

#define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) NAME,

#include "clang/StaticAnalyzer/Core/Analyses.def"

NumInliningModes

};

/// Describes the different kinds of C++ member functions which can be

/// considered for inlining by the analyzer.

///

/// These options are cumulative; enabling one kind of member function will

/// enable all kinds with lower enum values.

enum CXXInlineableMemberKind {

  // Uninitialized = 0,

  /// A dummy mode in which no C++ inlining is enabled.

  CIMK_None,

  /// Refers to regular member function and operator calls.

  CIMK_MemberFunctions,

  /// Refers to constructors (implicit or explicit).

  ///

  /// Note that a constructor will not be inlined if the corresponding

  /// destructor is non-trivial.

  CIMK_Constructors,

  /// Refers to destructors (implicit or explicit).

  CIMK_Destructors

};

/// Describes the different modes of inter-procedural analysis.

enum IPAKind {

  /// Perform only intra-procedural analysis.

  IPAK_None = 1,

  /// Inline C functions and blocks when their definitions are available.

  IPAK_BasicInlining = 2,

  /// Inline callees(C, C++, ObjC) when their definitions are available.

  IPAK_Inlining = 3,

  /// Enable inlining of dynamically dispatched methods.

  IPAK_DynamicDispatch = 4,

  /// Enable inlining of dynamically dispatched methods, bifurcate paths when

  /// exact type info is unavailable.

  IPAK_DynamicDispatchBifurcate = 5

};

enum class ExplorationStrategyKind {

  DFS,

  BFS,

  UnexploredFirst,

  UnexploredFirstQueue,

  UnexploredFirstLocationQueue,

  BFSBlockDFSContents,

};

/// Describes the kinds for high-level analyzer mode.

enum UserModeKind {

  /// Perform shallow but fast analyzes.

  UMK_Shallow = 1,

  /// Perform deep analyzes.

  UMK_Deep = 2

};

enum class CTUPhase1InliningKind { None, Small, All };

/// Stores options for the analyzer from the command line.

///

/// Some options are frontend flags (e.g.: -analyzer-output), but some are

/// analyzer configuration options, which are preceded by -analyzer-config

/// (e.g.: -analyzer-config notes-as-events=true).

///

/// If you'd like to add a new frontend flag, add it to

/// include/clang/Driver/CC1Options.td, add a new field to store the value of

/// that flag in this class, and initialize it in

/// lib/Frontend/CompilerInvocation.cpp.

///

/// If you'd like to add a new non-checker configuration, register it in

/// include/clang/StaticAnalyzer/Core/AnalyzerOptions.def, and refer to the

/// top of the file for documentation.

///

/// If you'd like to add a new checker option, call getChecker*Option()

/// whenever.

///

/// Some of the options are controlled by raw frontend flags for no good reason,

/// and should be eventually converted into -analyzer-config flags. New analyzer

/// options should not be implemented as frontend flags. Frontend flags still

/// make sense for things that do not affect the actual analysis.

class AnalyzerOptions : public RefCountedBase<AnalyzerOptions> {

public:

  using ConfigTable = llvm::StringMap<std::string>;

  /// Retrieves the list of checkers generated from Checkers.td. This doesn't

  /// contain statically linked but non-generated checkers and plugin checkers!

  static std::vector<StringRef>

  getRegisteredCheckers(bool IncludeExperimental = false);

  /// Retrieves the list of packages generated from Checkers.td. This doesn't

  /// contain statically linked but non-generated packages and plugin packages!

  static std::vector<StringRef>

  getRegisteredPackages(bool IncludeExperimental = false);

  /// Convenience function for printing options or checkers and their

  /// description in a formatted manner. If \p MinLineWidth is set to 0, no line

  /// breaks are introduced for the description.

  ///

  /// Format, depending whether the option name's length is less than

  /// \p EntryWidth:

  ///

  ///   <padding>EntryName<padding>Description

  ///   <---------padding--------->Description

  ///   <---------padding--------->Description

  ///

  ///   <padding>VeryVeryLongEntryName

  ///   <---------padding--------->Description

  ///   <---------padding--------->Description

  ///   ^~~~~~~~~InitialPad

  ///            ^~~~~~~~~~~~~~~~~~EntryWidth

  ///   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~MinLineWidth

  static void printFormattedEntry(llvm::raw_ostream &Out,

                                  std::pair<StringRef, StringRef> EntryDescPair,

                                  size_t InitialPad, size_t EntryWidth,

                                  size_t MinLineWidth = 0);

  /// Pairs of checker/package name and enable/disable.

  std::vector<std::pair<std::string, bool>> CheckersAndPackages;

  /// Vector of checker/package names which will not emit warnings.

  std::vector<std::string> SilencedCheckersAndPackages;

  /// A key-value table of use-specified configuration values.

  // TODO: This shouldn't be public.

  ConfigTable Config;

  AnalysisConstraints AnalysisConstraintsOpt = RangeConstraintsModel;

  AnalysisDiagClients AnalysisDiagOpt = PD_HTML;

  AnalysisPurgeMode AnalysisPurgeOpt = PurgeStmt;

  std::string AnalyzeSpecificFunction;

  /// File path to which the exploded graph should be dumped.

  std::string DumpExplodedGraphTo;

  /// Store full compiler invocation for reproducible instructions in the

  /// generated report.

  std::string FullCompilerInvocation;

  /// The maximum number of times the analyzer visits a block.

  unsigned maxBlockVisitOnPath;

  /// Disable all analyzer checkers.

  ///

  /// This flag allows one to disable analyzer checkers on the code processed by

  /// the given analysis consumer. Note, the code will get parsed and the

  /// command-line options will get checked.

  unsigned DisableAllCheckers : 1;

  unsigned ShowCheckerHelp : 1;

  unsigned ShowCheckerHelpAlpha : 1;

  unsigned ShowCheckerHelpDeveloper : 1;

  unsigned ShowCheckerOptionList : 1;

  unsigned ShowCheckerOptionAlphaList : 1;

  unsigned ShowCheckerOptionDeveloperList : 1;

  unsigned ShowEnabledCheckerList : 1;

  unsigned ShowConfigOptionsList : 1;

  unsigned ShouldEmitErrorsOnInvalidConfigValue : 1;

  unsigned AnalyzeAll : 1;

  unsigned AnalyzerDisplayProgress : 1;

  unsigned eagerlyAssumeBinOpBifurcation : 1;

  unsigned TrimGraph : 1;

  unsigned visualizeExplodedGraphWithGraphViz : 1;

  unsigned UnoptimizedCFG : 1;

  unsigned PrintStats : 1;

  /// Do not re-analyze paths leading to exhausted nodes with a different

  /// strategy. We get better code coverage when retry is enabled.

  unsigned NoRetryExhausted : 1;

  /// Emit analyzer warnings as errors.

  bool AnalyzerWerror : 1;

  /// The inlining stack depth limit.

  unsigned InlineMaxStackDepth;

  /// The mode of function selection used during inlining.

  AnalysisInliningMode InliningMode = NoRedundancy;

  // Create a field for each -analyzer-config option.

#define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(TYPE, NAME, CMDFLAG, DESC,        \

                                             SHALLOW_VAL, DEEP_VAL)            \

  ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, SHALLOW_VAL)

#define ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, DEFAULT_VAL)                \

  TYPE NAME;

#include "clang/StaticAnalyzer/Core/AnalyzerOptions.def"

#undef ANALYZER_OPTION

#undef ANALYZER_OPTION_DEPENDS_ON_USER_MODE

  // Create an array of all -analyzer-config command line options. Sort it in

  // the constructor.

  std::vector<llvm::StringLiteral> AnalyzerConfigCmdFlags = {

#define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(TYPE, NAME, CMDFLAG, DESC,        \

                                             SHALLOW_VAL, DEEP_VAL)            \

  ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, SHALLOW_VAL)

#define ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, DEFAULT_VAL)                \

  llvm::StringLiteral(CMDFLAG),

#include "clang/StaticAnalyzer/Core/AnalyzerOptions.def"

#undef ANALYZER_OPTION

#undef ANALYZER_OPTION_DEPENDS_ON_USER_MODE

  };

  bool isUnknownAnalyzerConfig(StringRef Name) const {

    assert(llvm::is_sorted(AnalyzerConfigCmdFlags));

    return !std::binary_search(AnalyzerConfigCmdFlags.begin(),

                               AnalyzerConfigCmdFlags.end(), Name);

  }

  AnalyzerOptions()

      : DisableAllCheckers(false), ShowCheckerHelp(false),

        ShowCheckerHelpAlpha(false), ShowCheckerHelpDeveloper(false),

        ShowCheckerOptionList(false), ShowCheckerOptionAlphaList(false),

        ShowCheckerOptionDeveloperList(false), ShowEnabledCheckerList(false),

        ShowConfigOptionsList(false),

        ShouldEmitErrorsOnInvalidConfigValue(false), AnalyzeAll(false),

        AnalyzerDisplayProgress(false), eagerlyAssumeBinOpBifurcation(false),

        TrimGraph(false), visualizeExplodedGraphWithGraphViz(false),

        UnoptimizedCFG(false), PrintStats(false), NoRetryExhausted(false),

        AnalyzerWerror(false) {

    llvm::sort(AnalyzerConfigCmdFlags);

  }

  /// Interprets an option's string value as a boolean. The "true" string is

  /// interpreted as true and the "false" string is interpreted as false.

  ///

  /// If an option value is not provided, returns the given \p DefaultVal.

  /// @param [in] CheckerName The *full name* of the checker. One may retrieve

  /// this from the checker object's field \c Name, or through \c

  /// CheckerManager::getCurrentCheckerName within the checker's registry

  /// function.

  /// Checker options are retrieved in the following format:

  /// `-analyzer-config CheckerName:OptionName=Value.

  /// @param [in] OptionName Name for option to retrieve.

  /// @param [in] SearchInParents If set to true and the searched option was not

  /// specified for the given checker the options for the parent packages will

  /// be searched as well. The inner packages take precedence over the outer

  /// ones.

  bool getCheckerBooleanOption(StringRef CheckerName, StringRef OptionName,

                               bool SearchInParents = false) const;

  bool getCheckerBooleanOption(const ento::CheckerBase *C, StringRef OptionName,

                               bool SearchInParents = false) const;

  /// Interprets an option's string value as an integer value.

  ///

  /// If an option value is not provided, returns the given \p DefaultVal.

  /// @param [in] CheckerName The *full name* of the checker. One may retrieve

  /// this from the checker object's field \c Name, or through \c

  /// CheckerManager::getCurrentCheckerName within the checker's registry

  /// function.

  /// Checker options are retrieved in the following format:

  /// `-analyzer-config CheckerName:OptionName=Value.

  /// @param [in] OptionName Name for option to retrieve.

  /// @param [in] SearchInParents If set to true and the searched option was not

  /// specified for the given checker the options for the parent packages will

  /// be searched as well. The inner packages take precedence over the outer

  /// ones.

  int getCheckerIntegerOption(StringRef CheckerName, StringRef OptionName,

                              bool SearchInParents = false) const;

  int getCheckerIntegerOption(const ento::CheckerBase *C, StringRef OptionName,

                              bool SearchInParents = false) const;

  /// Query an option's string value.

  ///

  /// If an option value is not provided, returns the given \p DefaultVal.

  /// @param [in] CheckerName The *full name* of the checker. One may retrieve

  /// this from the checker object's field \c Name, or through \c

  /// CheckerManager::getCurrentCheckerName within the checker's registry

  /// function.

  /// Checker options are retrieved in the following format:

  /// `-analyzer-config CheckerName:OptionName=Value.

  /// @param [in] OptionName Name for option to retrieve.

  /// @param [in] SearchInParents If set to true and the searched option was not

  /// specified for the given checker the options for the parent packages will

  /// be searched as well. The inner packages take precedence over the outer

  /// ones.

  StringRef getCheckerStringOption(StringRef CheckerName, StringRef OptionName,

                                   bool SearchInParents = false) const;

  StringRef getCheckerStringOption(const ento::CheckerBase *C,

                                   StringRef OptionName,

                                   bool SearchInParents = false) const;

  ExplorationStrategyKind getExplorationStrategy() const;

  CTUPhase1InliningKind getCTUPhase1Inlining() const;

  /// Returns the inter-procedural analysis mode.

  IPAKind getIPAMode() const;

  /// Returns the option controlling which C++ member functions will be

  /// considered for inlining.

  ///

  /// This is controlled by the 'c++-inlining' config option.

  ///

  /// \sa CXXMemberInliningMode

  bool mayInlineCXXMemberFunction(CXXInlineableMemberKind K) const;

  ento::PathDiagnosticConsumerOptions getDiagOpts() const {

    return {FullCompilerInvocation,

            ShouldDisplayMacroExpansions,

            ShouldSerializeStats,

            // The stable report filename option is deprecated because

            // file names are now always stable. Now the old option acts as

            // an alias to the new verbose filename option because this

            // closely mimics the behavior under the old option.

            ShouldWriteStableReportFilename || ShouldWriteVerboseReportFilename,

            AnalyzerWerror,

            ShouldApplyFixIts,

            ShouldDisplayCheckerNameForText};

  }

};

using AnalyzerOptionsRef = IntrusiveRefCntPtr<AnalyzerOptions>;

//===----------------------------------------------------------------------===//

// We'll use AnalyzerOptions in the frontend, but we can't link the frontend

// with clangStaticAnalyzerCore, because clangStaticAnalyzerCore depends on

// clangFrontend.

//

// For this reason, implement some methods in this header file.

//===----------------------------------------------------------------------===//

inline std::vector<StringRef>

AnalyzerOptions::getRegisteredCheckers(bool IncludeExperimental) {

  static constexpr llvm::StringLiteral StaticAnalyzerCheckerNames[] = {

#define GET_CHECKERS

#define CHECKER(FULLNAME, CLASS, HELPTEXT, DOC_URI, IS_HIDDEN)                 \

  llvm::StringLiteral(FULLNAME),

#include "clang/StaticAnalyzer/Checkers/Checkers.inc"

#undef CHECKER

#undef GET_CHECKERS

  };

  std::vector<StringRef> Checkers;

  for (StringRef CheckerName : StaticAnalyzerCheckerNames) {

    if (!CheckerName.startswith("debug.") &&

        (IncludeExperimental || !CheckerName.startswith("alpha.")))

      Checkers.push_back(CheckerName);

  }

  return Checkers;

}

inline std::vector<StringRef>

AnalyzerOptions::getRegisteredPackages(bool IncludeExperimental) {

  static constexpr llvm::StringLiteral StaticAnalyzerPackageNames[] = {

#define GET_PACKAGES

#define PACKAGE(FULLNAME) llvm::StringLiteral(FULLNAME),

#include "clang/StaticAnalyzer/Checkers/Checkers.inc"

#undef PACKAGE

#undef GET_PACKAGES

  };

  std::vector<StringRef> Packages;

  for (StringRef PackageName : StaticAnalyzerPackageNames) {

    if (PackageName != "debug" &&

        (IncludeExperimental || PackageName != "alpha"))

      Packages.push_back(PackageName);

  }

  return Packages;

}

} // namespace clang

#endif // LLVM_CLANG_STATICANALYZER_CORE_ANALYZEROPTIONS_H