/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying

   file LICENSE.rst or https://cmake.org/licensing for details.  */

#include "cmExportBuildFileGenerator.h"

#include <algorithm>

#include <map>

#include <memory>

#include <set>

#include <sstream>

#include <utility>

#include "cmExportSet.h"

#include "cmGeneratorExpression.h"

#include "cmGeneratorTarget.h"

#include "cmGlobalGenerator.h"

#include "cmList.h"

#include "cmLocalGenerator.h"

#include "cmMakefile.h"

#include "cmStateTypes.h"

#include "cmStringAlgorithms.h"

#include "cmTarget.h"

#include "cmTargetExport.h"

#include "cmValue.h"

#include "cmake.h"

class cmSourceFile;

cmExportBuildFileGenerator::cmExportBuildFileGenerator()

{

  this->LG = nullptr;

  this->ExportSet = nullptr;

}

void cmExportBuildFileGenerator::Compute(cmLocalGenerator* lg)

{

  this->LG = lg;

  if (this->ExportSet) {

    this->ExportSet->Compute(lg);

  }

}

cmStateEnums::TargetType cmExportBuildFileGenerator::GetExportTargetType(

  cmGeneratorTarget const* target) const

{

  cmStateEnums::TargetType targetType = target->GetType();

  // An object library exports as an interface library if we cannot

  // tell clients where to find the objects.  This is sufficient

  // to support transitive usage requirements on other targets that

  // use the object library.

  if (targetType == cmStateEnums::OBJECT_LIBRARY &&

      !target->Target->HasKnownObjectFileLocation(nullptr)) {

    targetType = cmStateEnums::INTERFACE_LIBRARY;

  }

  return targetType;

}

void cmExportBuildFileGenerator::SetExportSet(cmExportSet* exportSet)

{

  this->ExportSet = exportSet;

}

void cmExportBuildFileGenerator::SetImportLocationProperty(

  std::string const& config, std::string const& suffix,

  cmGeneratorTarget* target, ImportPropertyMap& properties)

{

  // Get the makefile in which to lookup target information.

  cmMakefile* mf = target->Makefile;

  if (target->GetType() == cmStateEnums::OBJECT_LIBRARY) {

    std::string prop = cmStrCat("IMPORTED_OBJECTS", suffix);

    // Compute all the object files inside this target and setup

    // IMPORTED_OBJECTS as a list of object files

    std::vector<cmSourceFile const*> objectSources;

    target->GetObjectSources(objectSources, config);

    std::string const obj_dir = target->GetObjectDirectory(config);

    std::vector<std::string> objects;

    for (cmSourceFile const* sf : objectSources) {

      std::string const& obj = target->GetObjectName(sf);

      objects.push_back(obj_dir + obj);

    }

    // Store the property.

    properties[prop] = cmList::to_string(objects);

  } else {

    // Add the main target file.

    {

      std::string prop = cmStrCat("IMPORTED_LOCATION", suffix);

      std::string value;

      if (target->IsAppBundleOnApple()) {

        value =

          target->GetFullPath(config, cmStateEnums::RuntimeBinaryArtifact);

      } else {

        value = target->GetFullPath(config,

                                    cmStateEnums::RuntimeBinaryArtifact, true);

      }

      properties[prop] = value;

    }

    // Add the import library for windows DLLs.

    if (target->HasImportLibrary(config)) {

      std::string prop = cmStrCat("IMPORTED_IMPLIB", suffix);

      std::string value =

        target->GetFullPath(config, cmStateEnums::ImportLibraryArtifact, true);

      if (mf->GetDefinition("CMAKE_IMPORT_LIBRARY_SUFFIX")) {

        target->GetImplibGNUtoMS(config, value, value,

                                 "${CMAKE_IMPORT_LIBRARY_SUFFIX}");

      }

      properties[prop] = value;

    }

  }

}

bool cmExportBuildFileGenerator::CollectExports(

  std::function<void(cmGeneratorTarget const*)> visitor)

{

  auto pred = [&](cmExportBuildFileGenerator::TargetExport& tei) -> bool {

    cmGeneratorTarget* te = this->LG->FindGeneratorTargetToUse(tei.Name);

    if (this->ExportedTargets.insert(te).second) {

      this->Exports.emplace_back(te, tei.XcFrameworkLocation);

      visitor(te);

      return true;

    }

    this->ComplainAboutDuplicateTarget(te->GetName());

    return false;

  };

  std::vector<TargetExport> targets;

  this->GetTargets(targets);

  return std::all_of(targets.begin(), targets.end(), pred);

}

void cmExportBuildFileGenerator::HandleMissingTarget(

  std::string& link_libs, cmGeneratorTarget const* depender,

  cmGeneratorTarget* dependee)

{

  // The target is not in the export.

  if (!this->AppendMode) {

    auto const& exportInfo = this->FindExportInfo(dependee);

    if (exportInfo.Namespaces.size() == 1 && exportInfo.Sets.size() == 1) {

      std::string missingTarget = *exportInfo.Namespaces.begin();

      missingTarget += dependee->GetExportName();

      link_libs += missingTarget;

      this->MissingTargets.emplace_back(std::move(missingTarget));

      return;

    }

    // We are not appending, so all exported targets should be

    // known here.  This is probably user-error.

    this->ComplainAboutMissingTarget(depender, dependee, exportInfo);

  }

  // Assume the target will be exported by another command.

  // Append it with the export namespace.

  link_libs += this->Namespace;

  link_libs += dependee->GetExportName();

}

void cmExportBuildFileGenerator::GetTargets(

  std::vector<TargetExport>& targets) const

{

  if (this->ExportSet) {

    for (std::unique_ptr<cmTargetExport> const& te :

         this->ExportSet->GetTargetExports()) {

      if (te->NamelinkOnly) {

        continue;

      }

      targets.emplace_back(te->TargetName, te->XcFrameworkLocation);

    }

    return;

  }

  targets = this->Targets;

}

cmExportFileGenerator::ExportInfo cmExportBuildFileGenerator::FindExportInfo(

  cmGeneratorTarget const* target) const

{

  std::vector<std::string> exportFiles;

  std::set<std::string> exportSets;

  std::set<std::string> namespaces;

  auto const& name = target->GetName();

  auto& allExportSets =

    target->GetLocalGenerator()->GetGlobalGenerator()->GetBuildExportSets();

  for (auto const& exp : allExportSets) {

    cmExportBuildFileGenerator const* const bfg = exp.second;

    cmExportSet const* const exportSet = bfg->GetExportSet();

    std::vector<TargetExport> targets;

    bfg->GetTargets(targets);

    if (std::any_of(

          targets.begin(), targets.end(),

          [&name](TargetExport const& te) { return te.Name == name; })) {

      if (exportSet) {

        exportSets.insert(exportSet->GetName());

      } else {

        exportSets.insert(exp.first);

      }

      exportFiles.push_back(exp.first);

      namespaces.insert(bfg->GetNamespace());

    }

  }

  return { exportFiles, exportSets, namespaces };

}

void cmExportBuildFileGenerator::ComplainAboutMissingTarget(

  cmGeneratorTarget const* depender, cmGeneratorTarget const* dependee,

  ExportInfo const& exportInfo) const

{

  std::ostringstream e;

  e << "export called with target \"" << depender->GetName()

    << "\" which requires target \"" << dependee->GetName() << "\" ";

  if (exportInfo.Sets.empty()) {

    e << "that is not in any export set.";

  } else {

    if (exportInfo.Sets.size() == 1) {

      e << "that is not in this export set, but in another export set which "

           "is "

           "exported multiple times with different namespaces: ";

    } else {

      e << "that is not in this export set, but in multiple other export "

           "sets: ";

    }

    e << cmJoin(exportInfo.Files, ", ") << ".\n"

      << "An exported target cannot depend upon another target which is "

         "exported in more than one export set or with more than one "

         "namespace. Consider consolidating the exports of the \""

      << dependee->GetName() << "\" target to a single export.";

  }

  this->ReportError(e.str());

}

void cmExportBuildFileGenerator::ComplainAboutDuplicateTarget(

  std::string const& targetName) const

{

  std::ostringstream e;

  e << "given target \"" << targetName << "\" more than once.";

  this->ReportError(e.str());

}

void cmExportBuildFileGenerator::IssueMessage(MessageType type,

                                              std::string const& message) const

{

  this->LG->GetGlobalGenerator()->GetCMakeInstance()->IssueMessage(

    type, message, this->LG->GetMakefile()->GetBacktrace());

}

std::string cmExportBuildFileGenerator::InstallNameDir(

  cmGeneratorTarget const* target, std::string const& config)

{

  std::string install_name_dir;

  cmMakefile* mf = target->Target->GetMakefile();

  if (mf->IsOn("CMAKE_PLATFORM_HAS_INSTALLNAME")) {

    install_name_dir = target->GetInstallNameDirForBuildTree(config);

  }

  return install_name_dir;

}

bool cmExportBuildFileGenerator::PopulateInterfaceProperties(

  cmGeneratorTarget const* target, ImportPropertyMap& properties)

{

  this->PopulateInterfaceProperty("INTERFACE_INCLUDE_DIRECTORIES", target,

                                  cmGeneratorExpression::BuildInterface,

                                  properties);

  this->PopulateInterfaceProperty("INTERFACE_LINK_DIRECTORIES", target,

                                  cmGeneratorExpression::BuildInterface,

                                  properties);

  this->PopulateInterfaceProperty("INTERFACE_LINK_DEPENDS", target,

                                  cmGeneratorExpression::BuildInterface,

                                  properties);

  this->PopulateInterfaceProperty("INTERFACE_SOURCES", target,

                                  cmGeneratorExpression::BuildInterface,

                                  properties);

  return this->PopulateInterfaceProperties(

    target, {}, cmGeneratorExpression::BuildInterface, properties);

}