/*============================================================================
  CMake - Cross Platform Makefile Generator
  Copyright 2000-2009 Kitware, Inc., Insight Software Consortium

  Distributed under the OSI-approved BSD License (the "License");
  see accompanying file Copyright.txt for details.

  This software is distributed WITHOUT ANY WARRANTY; without even the
  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the License for more information.
============================================================================*/
#ifndef cmTarget_h
#define cmTarget_h

#include "cmStandardIncludes.h"

#include "cmCustomCommand.h"
#include "cmListFileCache.h"
#include "cmPolicies.h"
#include "cmPropertyMap.h"

#include <cmsys/auto_ptr.hxx>
#if defined(CMAKE_BUILD_WITH_CMAKE)
#ifdef CMake_HAVE_CXX_UNORDERED_MAP
#include <unordered_map>
#else
#include <cmsys/hash_map.hxx>
#endif
#endif

class cmake;
class cmMakefile;
class cmSourceFile;
class cmGlobalGenerator;
class cmListFileBacktrace;
class cmTarget;
class cmGeneratorTarget;
class cmTargetTraceDependencies;

class cmTargetInternals;
class cmTargetInternalPointer
{
public:
  cmTargetInternalPointer();
  cmTargetInternalPointer(cmTargetInternalPointer const& r);
  ~cmTargetInternalPointer();
  cmTargetInternalPointer& operator=(cmTargetInternalPointer const& r);
  cmTargetInternals* operator->() const { return this->Pointer; }
  cmTargetInternals* Get() const { return this->Pointer; }
private:
  cmTargetInternals* Pointer;
};

/** \class cmTarget
 * \brief Represent a library or executable target loaded from a makefile.
 *
 * cmTarget represents a target loaded from
 * a makefile.
 */
class cmTarget
{
public:
  cmTarget();
  enum CustomCommandType
  {
    PRE_BUILD,
    PRE_LINK,
    POST_BUILD
  };

  /**
   * Return the type of target.
   */
  cmState::TargetType GetType() const { return this->TargetTypeValue; }

  /**
   * Set the target type
   */
  void SetType(cmState::TargetType f, const std::string& name);

  void MarkAsImported(bool global = false);

  ///! Set/Get the name of the target
  const std::string& GetName() const { return this->Name; }

  ///! Set the cmMakefile that owns this target
  void SetMakefile(cmMakefile* mf);
  cmMakefile* GetMakefile() const { return this->Makefile; }

#define DECLARE_TARGET_POLICY(POLICY)                                         \
  cmPolicies::PolicyStatus GetPolicyStatus##POLICY() const                    \
  {                                                                           \
    return this->PolicyMap.Get(cmPolicies::POLICY);                           \
  }

  CM_FOR_EACH_TARGET_POLICY(DECLARE_TARGET_POLICY)

#undef DECLARE_TARGET_POLICY

  /**
   * Get the list of the custom commands for this target
   */
  std::vector<cmCustomCommand> const& GetPreBuildCommands() const
  {
    return this->PreBuildCommands;
  }
  std::vector<cmCustomCommand> const& GetPreLinkCommands() const
  {
    return this->PreLinkCommands;
  }
  std::vector<cmCustomCommand> const& GetPostBuildCommands() const
  {
    return this->PostBuildCommands;
  }
  void AddPreBuildCommand(cmCustomCommand const& cmd)
  {
    this->PreBuildCommands.push_back(cmd);
  }
  void AddPreLinkCommand(cmCustomCommand const& cmd)
  {
    this->PreLinkCommands.push_back(cmd);
  }
  void AddPostBuildCommand(cmCustomCommand const& cmd)
  {
    this->PostBuildCommands.push_back(cmd);
  }

  /**
   * Add sources to the target.
   */
  void AddSources(std::vector<std::string> const& srcs);
  void AddTracedSources(std::vector<std::string> const& srcs);
  cmSourceFile* AddSourceCMP0049(const std::string& src);
  cmSourceFile* AddSource(const std::string& src);

  //* how we identify a library, by name and type
  typedef std::pair<std::string, cmTargetLinkLibraryType> LibraryID;

  typedef std::vector<LibraryID> LinkLibraryVectorType;
  const LinkLibraryVectorType& GetOriginalLinkLibraries() const
  {
    return this->OriginalLinkLibraries;
  }

  /**
   * Clear the dependency information recorded for this target, if any.
   */
  void ClearDependencyInformation(cmMakefile& mf, const std::string& target);

  void AddLinkLibrary(cmMakefile& mf, const std::string& target,
                      const std::string& lib, cmTargetLinkLibraryType llt);
  enum TLLSignature
  {
    KeywordTLLSignature,
    PlainTLLSignature
  };
  bool PushTLLCommandTrace(TLLSignature signature,
                           cmListFileContext const& lfc);
  void GetTllSignatureTraces(std::ostream& s, TLLSignature sig) const;

  void MergeLinkLibraries(cmMakefile& mf, const std::string& selfname,
                          const LinkLibraryVectorType& libs);

  const std::vector<std::string>& GetLinkDirectories() const;

  void AddLinkDirectory(const std::string& d);

  /**
   * Set the path where this target should be installed. This is relative to
   * INSTALL_PREFIX
   */
  std::string GetInstallPath() const { return this->InstallPath; }
  void SetInstallPath(const char* name) { this->InstallPath = name; }

  /**
   * Set the path where this target (if it has a runtime part) should be
   * installed. This is relative to INSTALL_PREFIX
   */
  std::string GetRuntimeInstallPath() const
  {
    return this->RuntimeInstallPath;
  }
  void SetRuntimeInstallPath(const char* name)
  {
    this->RuntimeInstallPath = name;
  }

  /**
   * Get/Set whether there is an install rule for this target.
   */
  bool GetHaveInstallRule() const { return this->HaveInstallRule; }
  void SetHaveInstallRule(bool h) { this->HaveInstallRule = h; }

  /** Add a utility on which this project depends. A utility is an executable
   * name as would be specified to the ADD_EXECUTABLE or UTILITY_SOURCE
   * commands. It is not a full path nor does it have an extension.
   */
  void AddUtility(const std::string& u, cmMakefile* makefile = 0);
  ///! Get the utilities used by this target
  std::set<std::string> const& GetUtilities() const { return this->Utilities; }
  cmListFileBacktrace const* GetUtilityBacktrace(const std::string& u) const;

  ///! 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) const;
  const char* GetProperty(const std::string& prop, cmMakefile* context) const;
  bool GetPropertyAsBool(const std::string& prop) const;
  void CheckProperty(const std::string& prop, cmMakefile* context) const;

  bool IsImported() const { return this->IsImportedTarget; }
  bool IsImportedGloballyVisible() const
  {
    return this->ImportedGloballyVisible;
  }

  // Get the properties
  cmPropertyMap& GetProperties() const { return this->Properties; }

  bool GetMappedConfig(std::string const& desired_config, const char** loc,
                       const char** imp, std::string& suffix) const;

  /** Return whether this target is an executable with symbol exports
      enabled.  */
  bool IsExecutableWithExports() const;

  /** Return whether this target is a shared library Framework on
      Apple.  */
  bool IsFrameworkOnApple() const;

  /** Return whether this target is an executable Bundle on Apple.  */
  bool IsAppBundleOnApple() const;

  /** Get a backtrace from the creation of the target.  */
  cmListFileBacktrace const& GetBacktrace() const;

  void InsertInclude(std::string const& entry, cmListFileBacktrace const& bt,
                     bool before = false);
  void InsertCompileOption(std::string const& entry,
                           cmListFileBacktrace const& bt, bool before = false);
  void InsertCompileDefinition(std::string const& entry,
                               cmListFileBacktrace const& bt);

  void AppendBuildInterfaceIncludes();

  std::string GetDebugGeneratorExpressions(const std::string& value,
                                           cmTargetLinkLibraryType llt) const;

  void AddSystemIncludeDirectories(const std::set<std::string>& incs);
  std::set<std::string> const& GetSystemIncludeDirectories() const
  {
    return this->SystemIncludeDirectories;
  }

  cmStringRange GetIncludeDirectoriesEntries() const;
  cmBacktraceRange GetIncludeDirectoriesBacktraces() const;

  cmStringRange GetCompileOptionsEntries() const;
  cmBacktraceRange GetCompileOptionsBacktraces() const;

  cmStringRange GetCompileFeaturesEntries() const;
  cmBacktraceRange GetCompileFeaturesBacktraces() const;

  cmStringRange GetCompileDefinitionsEntries() const;
  cmBacktraceRange GetCompileDefinitionsBacktraces() const;

  cmStringRange GetSourceEntries() const;
  cmBacktraceRange GetSourceBacktraces() const;
  cmStringRange GetLinkImplementationEntries() const;
  cmBacktraceRange GetLinkImplementationBacktraces() const;

  struct StrictTargetComparison
  {
    bool operator()(cmTarget const* t1, cmTarget const* t2) const;
  };

private:
  bool HandleLocationPropertyPolicy(cmMakefile* context) const;

  const char* GetSuffixVariableInternal(bool implib) const;
  const char* GetPrefixVariableInternal(bool implib) const;

  // Use a makefile variable to set a default for the given property.
  // If the variable is not defined use the given default instead.
  void SetPropertyDefault(const std::string& property,
                          const char* default_value);

  std::string ImportedGetFullPath(const std::string& config,
                                  bool implib) const;

private:
  mutable cmPropertyMap Properties;
  std::set<std::string> SystemIncludeDirectories;
  std::set<std::string> LinkDirectoriesEmmitted;
  std::set<std::string> Utilities;
  std::map<std::string, cmListFileBacktrace> UtilityBacktraces;
  cmPolicies::PolicyMap PolicyMap;
  std::string Name;
  std::string InstallPath;
  std::string RuntimeInstallPath;
  std::vector<std::string> LinkDirectories;
  std::vector<cmCustomCommand> PreBuildCommands;
  std::vector<cmCustomCommand> PreLinkCommands;
  std::vector<cmCustomCommand> PostBuildCommands;
  std::vector<std::pair<TLLSignature, cmListFileContext> > TLLCommands;
  LinkLibraryVectorType PrevLinkedLibraries;
  LinkLibraryVectorType OriginalLinkLibraries;
  cmMakefile* Makefile;
  cmTargetInternalPointer Internal;
  cmState::TargetType TargetTypeValue;
  bool HaveInstallRule;
  bool RecordDependencies;
  bool DLLPlatform;
  bool IsAndroid;
  bool IsImportedTarget;
  bool ImportedGloballyVisible;
  bool BuildInterfaceIncludesAppended;

  std::string ProcessSourceItemCMP0049(const std::string& s);

  /** Return whether or not the target has a DLL import library.  */
  bool HasImportLibrary() const;

  // Internal representation details.
  friend class cmTargetInternals;
  friend class cmGeneratorTarget;
  friend class cmTargetTraceDependencies;

  cmListFileBacktrace Backtrace;
};

#ifdef CMAKE_BUILD_WITH_CMAKE
#ifdef CMake_HAVE_CXX_UNORDERED_MAP
typedef std::unordered_map<std::string, cmTarget> cmTargets;
#else
typedef cmsys::hash_map<std::string, cmTarget> cmTargets;
#endif
#else
typedef std::map<std::string, cmTarget> cmTargets;
#endif

class cmTargetSet : public std::set<std::string>
{
};
class cmTargetManifest : public std::map<std::string, cmTargetSet>
{
};

#endif