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/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   file Copyright.txt or https://cmake.org/licensing for details.  */
#ifndef cmake_h
#define cmake_h

#include "cmConfigure.h" // IWYU pragma: keep

#include <map>
#include <set>
#include <string>
#include <unordered_set>
#include <vector>

#include "cmInstalledFile.h"
#include "cmListFileCache.h"
#include "cmStateSnapshot.h"
#include "cmStateTypes.h"

#if defined(CMAKE_BUILD_WITH_CMAKE)
#  include "cm_jsoncpp_value.h"
#endif

class cmExternalMakefileProjectGeneratorFactory;
class cmFileTimeComparison;
class cmGlobalGenerator;
class cmGlobalGeneratorFactory;
class cmMakefile;
class cmMessenger;
class cmState;
class cmVariableWatch;
struct cmDocumentationEntry;

/** \brief Represents a cmake invocation.
 *
 * This class represents a cmake invocation. It is the top level class when
 * running cmake. Most cmake based GUIs should primarily create an instance
 * of this class and communicate with it.
 *
 * The basic process for a GUI is as follows:
 *
 * -# Create a cmake instance
 * -# Set the Home directories, generator, and cmake command. this
 *    can be done using the Set methods or by using SetArgs and passing in
 *    command line arguments.
 * -# Load the cache by calling LoadCache (duh)
 * -# if you are using command line arguments with -D or -C flags then
 *    call SetCacheArgs (or if for some other reason you want to modify the
 *    cache), do it now.
 * -# Finally call Configure
 * -# Let the user change values and go back to step 5
 * -# call Generate

 * If your GUI allows the user to change the home directories then
 * you must at a minimum redo steps 2 through 7.
 */

class cmake
{
  CM_DISABLE_COPY(cmake)

public:
  enum Role
  {
    RoleInternal, // no commands
    RoleScript,   // script commands
    RoleProject   // all commands
  };

  enum MessageType
  {
    AUTHOR_WARNING,
    AUTHOR_ERROR,
    FATAL_ERROR,
    INTERNAL_ERROR,
    MESSAGE,
    WARNING,
    LOG,
    DEPRECATION_ERROR,
    DEPRECATION_WARNING
  };

  enum DiagLevel
  {
    DIAG_IGNORE,
    DIAG_WARN,
    DIAG_ERROR
  };

  /** \brief Describes the working modes of cmake */
  enum WorkingMode
  {
    NORMAL_MODE, ///< Cmake runs to create project files
                 /** \brief Script mode (started by using -P).
                  *
                  * In script mode there is no generator and no cache. Also,
                  * languages are not enabled, so add_executable and things do
                  * nothing.
                  */
    SCRIPT_MODE,
    /** \brief A pkg-config like mode
     *
     * In this mode cmake just searches for a package and prints the results to
     * stdout. This is similar to SCRIPT_MODE, but commands like add_library()
     * work too, since they may be used e.g. in exported target files. Started
     * via --find-package.
     */
    FIND_PACKAGE_MODE
  };

  struct GeneratorInfo
  {
    std::string name;
    std::string baseName;
    std::string extraName;
    bool supportsToolset;
    bool supportsPlatform;
    bool isAlias;
  };

  typedef std::map<std::string, cmInstalledFile> InstalledFilesMap;

  static const int NO_BUILD_PARALLEL_LEVEL = -1;
  static const int DEFAULT_BUILD_PARALLEL_LEVEL = 0;

  /// Default constructor
  cmake(Role role);
  /// Destructor
  ~cmake();

#if defined(CMAKE_BUILD_WITH_CMAKE)
  Json::Value ReportCapabilitiesJson(bool haveServerMode) const;
#endif
  std::string ReportCapabilities(bool haveServerMode) const;

  static const char* GetCMakeFilesDirectory() { return "/CMakeFiles"; }
  static const char* GetCMakeFilesDirectoryPostSlash()
  {
    return "CMakeFiles/";
  }

  //@{
  /**
   * Set/Get the home directory (or output directory) in the project. The
   * home directory is the top directory of the project. It is the
   * path-to-source cmake was run with.
   */
  void SetHomeDirectory(const std::string& dir);
  std::string const& GetHomeDirectory() const;
  void SetHomeOutputDirectory(const std::string& dir);
  std::string const& GetHomeOutputDirectory() const;
  //@}

  /**
   * Handle a command line invocation of cmake.
   */
  int Run(const std::vector<std::string>& args)
  {
    return this->Run(args, false);
  }
  int Run(const std::vector<std::string>& args, bool noconfigure);

  /**
   * Run the global generator Generate step.
   */
  int Generate();

  /**
   * Configure the cmMakefiles. This routine will create a GlobalGenerator if
   * one has not already been set. It will then Call Configure on the
   * GlobalGenerator. This in turn will read in an process all the CMakeList
   * files for the tree. It will not produce any actual Makefiles, or
   * workspaces. Generate does that.  */
  int Configure();
  int ActualConfigure();

  ///! Break up a line like VAR:type="value" into var, type and value
  static bool ParseCacheEntry(const std::string& entry, std::string& var,
                              std::string& value,
                              cmStateEnums::CacheEntryType& type);

  int LoadCache();
  bool LoadCache(const std::string& path);
  bool LoadCache(const std::string& path, bool internal,
                 std::set<std::string>& excludes,
                 std::set<std::string>& includes);
  bool SaveCache(const std::string& path);
  bool DeleteCache(const std::string& path);
  void PreLoadCMakeFiles();

  ///! Create a GlobalGenerator
  cmGlobalGenerator* CreateGlobalGenerator(const std::string& name);

  ///! Return the global generator assigned to this instance of cmake
  cmGlobalGenerator* GetGlobalGenerator() { return this->GlobalGenerator; }
  ///! Return the global generator assigned to this instance of cmake, const
  const cmGlobalGenerator* GetGlobalGenerator() const
  {
    return this->GlobalGenerator;
  }

  ///! Return the full path to where the CMakeCache.txt file should be.
  static std::string FindCacheFile(const std::string& binaryDir);

  ///! Return the global generator assigned to this instance of cmake
  void SetGlobalGenerator(cmGlobalGenerator*);

  ///! Get the names of the current registered generators
  void GetRegisteredGenerators(std::vector<GeneratorInfo>& generators) const;

  ///! Set the name of the selected generator-specific instance.
  void SetGeneratorInstance(std::string const& instance)
  {
    this->GeneratorInstance = instance;
  }

  ///! Set the name of the selected generator-specific platform.
  void SetGeneratorPlatform(std::string const& ts)
  {
    this->GeneratorPlatform = ts;
  }

  ///! Set the name of the selected generator-specific toolset.
  void SetGeneratorToolset(std::string const& ts)
  {
    this->GeneratorToolset = ts;
  }

  const std::vector<std::string>& GetSourceExtensions() const
  {
    return this->SourceFileExtensions;
  }

  bool IsSourceExtension(const std::string& ext) const
  {
    return this->SourceFileExtensionsSet.find(ext) !=
      this->SourceFileExtensionsSet.end();
  }

  const std::vector<std::string>& GetHeaderExtensions() const
  {
    return this->HeaderFileExtensions;
  }

  bool IsHeaderExtension(const std::string& ext) const
  {
    return this->HeaderFileExtensionsSet.find(ext) !=
      this->HeaderFileExtensionsSet.end();
  }

  // Strips the extension (if present and known) from a filename
  std::string StripExtension(const std::string& file) const;

  /**
   * Given a variable name, return its value (as a string).
   */
  const char* GetCacheDefinition(const std::string&) const;
  ///! Add an entry into the cache
  void AddCacheEntry(const std::string& key, const char* value,
                     const char* helpString, int type);

  bool DoWriteGlobVerifyTarget() const;
  std::string const& GetGlobVerifyScript() const;
  std::string const& GetGlobVerifyStamp() const;
  void AddGlobCacheEntry(bool recurse, bool listDirectories,
                         bool followSymlinks, const std::string& relative,
                         const std::string& expression,
                         const std::vector<std::string>& files,
                         const std::string& variable,
                         cmListFileBacktrace const& bt);

  /**
   * Get the system information and write it to the file specified
   */
  int GetSystemInformation(std::vector<std::string>&);

  ///! Parse command line arguments
  void SetArgs(const std::vector<std::string>&,
               bool directoriesSetBefore = false);

  ///! Is this cmake running as a result of a TRY_COMPILE command
  bool GetIsInTryCompile() const;
  void SetIsInTryCompile(bool b);

  ///! Parse command line arguments that might set cache values
  bool SetCacheArgs(const std::vector<std::string>&);

  typedef void (*ProgressCallbackType)(const char* msg, float progress, void*);
  /**
   *  Set the function used by GUIs to receive progress updates
   *  Function gets passed: message as a const char*, a progress
   *  amount ranging from 0 to 1.0 and client data. The progress
   *  number provided may be negative in cases where a message is
   *  to be displayed without any progress percentage.
   */
  void SetProgressCallback(ProgressCallbackType f, void* clientData = nullptr);

  ///! this is called by generators to update the progress
  void UpdateProgress(const char* msg, float prog);

  ///! Get the variable watch object
  cmVariableWatch* GetVariableWatch() { return this->VariableWatch; }

  void GetGeneratorDocumentation(std::vector<cmDocumentationEntry>&);

  ///! Set/Get a property of this target file
  void SetProperty(const std::string& prop, const char* value);
  void AppendProperty(const std::string& prop, const char* value,
                      bool asString = false);
  const char* GetProperty(const std::string& prop);
  bool GetPropertyAsBool(const std::string& prop);

  ///! Get or create an cmInstalledFile instance and return a pointer to it
  cmInstalledFile* GetOrCreateInstalledFile(cmMakefile* mf,
                                            const std::string& name);

  cmInstalledFile const* GetInstalledFile(const std::string& name) const;

  InstalledFilesMap const& GetInstalledFiles() const
  {
    return this->InstalledFiles;
  }

  ///! Do all the checks before running configure
  int DoPreConfigureChecks();

  void SetWorkingMode(WorkingMode mode) { this->CurrentWorkingMode = mode; }
  WorkingMode GetWorkingMode() { return this->CurrentWorkingMode; }

  ///! Debug the try compile stuff by not deleting the files
  bool GetDebugTryCompile() { return this->DebugTryCompile; }
  void DebugTryCompileOn() { this->DebugTryCompile = true; }

  /**
   * Generate CMAKE_ROOT and CMAKE_COMMAND cache entries
   */
  int AddCMakePaths();

  /**
   * Get the file comparison class
   */
  cmFileTimeComparison* GetFileComparison() { return this->FileComparison; }

  // Do we want debug output during the cmake run.
  bool GetDebugOutput() { return this->DebugOutput; }
  void SetDebugOutputOn(bool b) { this->DebugOutput = b; }

  // Do we want trace output during the cmake run.
  bool GetTrace() { return this->Trace; }
  void SetTrace(bool b) { this->Trace = b; }
  bool GetTraceExpand() { return this->TraceExpand; }
  void SetTraceExpand(bool b) { this->TraceExpand = b; }
  void AddTraceSource(std::string const& file)
  {
    this->TraceOnlyThisSources.push_back(file);
  }
  std::vector<std::string> const& GetTraceSources() const
  {
    return this->TraceOnlyThisSources;
  }
  bool GetWarnUninitialized() { return this->WarnUninitialized; }
  void SetWarnUninitialized(bool b) { this->WarnUninitialized = b; }
  bool GetWarnUnused() { return this->WarnUnused; }
  void SetWarnUnused(bool b) { this->WarnUnused = b; }
  bool GetWarnUnusedCli() { return this->WarnUnusedCli; }
  void SetWarnUnusedCli(bool b) { this->WarnUnusedCli = b; }
  bool GetCheckSystemVars() { return this->CheckSystemVars; }
  void SetCheckSystemVars(bool b) { this->CheckSystemVars = b; }

  void MarkCliAsUsed(const std::string& variable);

  /** Get the list of configurations (in upper case) considered to be
      debugging configurations.*/
  std::vector<std::string> GetDebugConfigs();

  void SetCMakeEditCommand(std::string const& s)
  {
    this->CMakeEditCommand = s;
  }
  std::string const& GetCMakeEditCommand() const
  {
    return this->CMakeEditCommand;
  }

  cmMessenger* GetMessenger() const;

  /*
   * Get the state of the suppression of developer (author) warnings.
   * Returns false, by default, if developer warnings should be shown, true
   * otherwise.
   */
  bool GetSuppressDevWarnings() const;
  /*
   * Set the state of the suppression of developer (author) warnings.
   */
  void SetSuppressDevWarnings(bool v);

  /*
   * Get the state of the suppression of deprecated warnings.
   * Returns false, by default, if deprecated warnings should be shown, true
   * otherwise.
   */
  bool GetSuppressDeprecatedWarnings() const;
  /*
   * Set the state of the suppression of deprecated warnings.
   */
  void SetSuppressDeprecatedWarnings(bool v);

  /*
   * Get the state of treating developer (author) warnings as errors.
   * Returns false, by default, if warnings should not be treated as errors,
   * true otherwise.
   */
  bool GetDevWarningsAsErrors() const;
  /**
   * Set the state of treating developer (author) warnings as errors.
   */
  void SetDevWarningsAsErrors(bool v);

  /*
   * Get the state of treating deprecated warnings as errors.
   * Returns false, by default, if warnings should not be treated as errors,
   * true otherwise.
   */
  bool GetDeprecatedWarningsAsErrors() const;
  /**
   * Set the state of treating developer (author) warnings as errors.
   */
  void SetDeprecatedWarningsAsErrors(bool v);

  /** Display a message to the user.  */
  void IssueMessage(
    cmake::MessageType t, std::string const& text,
    cmListFileBacktrace const& backtrace = cmListFileBacktrace()) const;

  ///! run the --build option
  int Build(int jobs, const std::string& dir, const std::string& target,
            const std::string& config,
            const std::vector<std::string>& nativeOptions, bool clean);

  ///! run the --open option
  bool Open(const std::string& dir, bool dryRun);

  void UnwatchUnusedCli(const std::string& var);
  void WatchUnusedCli(const std::string& var);

  cmState* GetState() const { return this->State; }
  void SetCurrentSnapshot(cmStateSnapshot const& snapshot)
  {
    this->CurrentSnapshot = snapshot;
  }
  cmStateSnapshot GetCurrentSnapshot() const { return this->CurrentSnapshot; }

protected:
  void RunCheckForUnusedVariables();
  void InitializeProperties();
  int HandleDeleteCacheVariables(const std::string& var);

  typedef std::vector<cmGlobalGeneratorFactory*> RegisteredGeneratorsVector;
  RegisteredGeneratorsVector Generators;
  typedef std::vector<cmExternalMakefileProjectGeneratorFactory*>
    RegisteredExtraGeneratorsVector;
  RegisteredExtraGeneratorsVector ExtraGenerators;
  void AddScriptingCommands();
  void AddProjectCommands();
  void AddDefaultGenerators();
  void AddDefaultExtraGenerators();

  cmGlobalGenerator* GlobalGenerator;
  std::map<std::string, DiagLevel> DiagLevels;
  std::string GeneratorInstance;
  std::string GeneratorPlatform;
  std::string GeneratorToolset;

  ///! read in a cmake list file to initialize the cache
  void ReadListFile(const std::vector<std::string>& args, const char* path);
  bool FindPackage(const std::vector<std::string>& args);

  ///! Check if CMAKE_CACHEFILE_DIR is set. If it is not, delete the log file.
  ///  If it is set, truncate it to 50kb
  void TruncateOutputLog(const char* fname);

  /**
   * Method called to check build system integrity at build time.
   * Returns 1 if CMake should rerun and 0 otherwise.
   */
  int CheckBuildSystem();

  void SetDirectoriesFromFile(const char* arg);

  //! Make sure all commands are what they say they are and there is no
  /// macros.
  void CleanupCommandsAndMacros();

  void GenerateGraphViz(const char* fileName) const;

  cmVariableWatch* VariableWatch;

private:
  ProgressCallbackType ProgressCallback;
  void* ProgressCallbackClientData;
  bool InTryCompile;
  WorkingMode CurrentWorkingMode;
  bool DebugOutput;
  bool Trace;
  bool TraceExpand;
  bool WarnUninitialized;
  bool WarnUnused;
  bool WarnUnusedCli;
  bool CheckSystemVars;
  std::map<std::string, bool> UsedCliVariables;
  std::string CMakeEditCommand;
  std::string CXXEnvironment;
  std::string CCEnvironment;
  std::string CheckBuildSystemArgument;
  std::string CheckStampFile;
  std::string CheckStampList;
  std::string VSSolutionFile;
  std::vector<std::string> SourceFileExtensions;
  std::unordered_set<std::string> SourceFileExtensionsSet;
  std::vector<std::string> HeaderFileExtensions;
  std::unordered_set<std::string> HeaderFileExtensionsSet;
  bool ClearBuildSystem;
  bool DebugTryCompile;
  cmFileTimeComparison* FileComparison;
  std::string GraphVizFile;
  InstalledFilesMap InstalledFiles;

  cmState* State;
  cmStateSnapshot CurrentSnapshot;
  cmMessenger* Messenger;

  std::vector<std::string> TraceOnlyThisSources;

  void UpdateConversionPathTable();

  // Print a list of valid generators to stderr.
  void PrintGeneratorList();

  void CreateDefaultGlobalGenerator();

  /**
   * Convert a message type between a warning and an error, based on the state
   * of the error output CMake variables, in the cache.
   */
  cmake::MessageType ConvertMessageType(cmake::MessageType t) const;

  /*
   * Check if messages of this type should be output, based on the state of the
   * warning and error output CMake variables, in the cache.
   */
  bool IsMessageTypeVisible(cmake::MessageType t) const;
};

#define CMAKE_STANDARD_OPTIONS_TABLE                                          \
  { "-C <initial-cache>", "Pre-load a script to populate the cache." },       \
    { "-D <var>[:<type>]=<value>", "Create or update a cmake cache entry." }, \
    { "-U <globbing_expr>", "Remove matching entries from CMake cache." },    \
    { "-G <generator-name>", "Specify a build system generator." },           \
    { "-T <toolset-name>",                                                    \
      "Specify toolset name if supported by generator." },                    \
    { "-A <platform-name>",                                                   \
      "Specify platform name if supported by generator." },                   \
    { "-Wdev", "Enable developer warnings." },                                \
    { "-Wno-dev", "Suppress developer warnings." },                           \
    { "-Werror=dev", "Make developer warnings errors." },                     \
    { "-Wno-error=dev", "Make developer warnings not errors." },              \
    { "-Wdeprecated", "Enable deprecation warnings." },                       \
    { "-Wno-deprecated", "Suppress deprecation warnings." },                  \
    { "-Werror=deprecated",                                                   \
      "Make deprecated macro and function warnings "                          \
      "errors." },                                                            \
  {                                                                           \
    "-Wno-error=deprecated",                                                  \
      "Make deprecated macro and function warnings "                          \
      "not errors."                                                           \
  }

#define FOR_EACH_C_FEATURE(F)                                                 \
  F(c_std_90)                                                                 \
  F(c_std_99)                                                                 \
  F(c_std_11)                                                                 \
  F(c_function_prototypes)                                                    \
  F(c_restrict)                                                               \
  F(c_static_assert)                                                          \
  F(c_variadic_macros)

#define FOR_EACH_CXX_FEATURE(F)                                               \
  F(cxx_std_98)                                                               \
  F(cxx_std_11)                                                               \
  F(cxx_std_14)                                                               \
  F(cxx_std_17)                                                               \
  F(cxx_std_20)                                                               \
  F(cxx_aggregate_default_initializers)                                       \
  F(cxx_alias_templates)                                                      \
  F(cxx_alignas)                                                              \
  F(cxx_alignof)                                                              \
  F(cxx_attributes)                                                           \
  F(cxx_attribute_deprecated)                                                 \
  F(cxx_auto_type)                                                            \
  F(cxx_binary_literals)                                                      \
  F(cxx_constexpr)                                                            \
  F(cxx_contextual_conversions)                                               \
  F(cxx_decltype)                                                             \
  F(cxx_decltype_auto)                                                        \
  F(cxx_decltype_incomplete_return_types)                                     \
  F(cxx_default_function_template_args)                                       \
  F(cxx_defaulted_functions)                                                  \
  F(cxx_defaulted_move_initializers)                                          \
  F(cxx_delegating_constructors)                                              \
  F(cxx_deleted_functions)                                                    \
  F(cxx_digit_separators)                                                     \
  F(cxx_enum_forward_declarations)                                            \
  F(cxx_explicit_conversions)                                                 \
  F(cxx_extended_friend_declarations)                                         \
  F(cxx_extern_templates)                                                     \
  F(cxx_final)                                                                \
  F(cxx_func_identifier)                                                      \
  F(cxx_generalized_initializers)                                             \
  F(cxx_generic_lambdas)                                                      \
  F(cxx_inheriting_constructors)                                              \
  F(cxx_inline_namespaces)                                                    \
  F(cxx_lambdas)                                                              \
  F(cxx_lambda_init_captures)                                                 \
  F(cxx_local_type_template_args)                                             \
  F(cxx_long_long_type)                                                       \
  F(cxx_noexcept)                                                             \
  F(cxx_nonstatic_member_init)                                                \
  F(cxx_nullptr)                                                              \
  F(cxx_override)                                                             \
  F(cxx_range_for)                                                            \
  F(cxx_raw_string_literals)                                                  \
  F(cxx_reference_qualified_functions)                                        \
  F(cxx_relaxed_constexpr)                                                    \
  F(cxx_return_type_deduction)                                                \
  F(cxx_right_angle_brackets)                                                 \
  F(cxx_rvalue_references)                                                    \
  F(cxx_sizeof_member)                                                        \
  F(cxx_static_assert)                                                        \
  F(cxx_strong_enums)                                                         \
  F(cxx_template_template_parameters)                                         \
  F(cxx_thread_local)                                                         \
  F(cxx_trailing_return_types)                                                \
  F(cxx_unicode_literals)                                                     \
  F(cxx_uniform_initialization)                                               \
  F(cxx_unrestricted_unions)                                                  \
  F(cxx_user_literals)                                                        \
  F(cxx_variable_templates)                                                   \
  F(cxx_variadic_macros)                                                      \
  F(cxx_variadic_templates)

#endif