1 files changed, 151 insertions, 0 deletions
diff --git a/Source/cmFileSet.cxx b/Source/cmFileSet.cxx
new file mode 100644
index 0000000000..08d56ba1aa
--- /dev/null
+++ b/Source/cmFileSet.cxx
@@ -0,0 +1,151 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#include "cmFileSet.h"
+
+#include <sstream>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "cmGeneratorExpression.h"
+#include "cmListFileCache.h"
+#include "cmLocalGenerator.h"
+#include "cmMessageType.h"
+#include "cmStringAlgorithms.h"
+#include "cmSystemTools.h"
+#include "cmake.h"
+
+cmFileSet::cmFileSet(std::string name, std::string type)
+  : Name(std::move(name))
+  , Type(std::move(type))
+{
+}
+
+void cmFileSet::ClearDirectoryEntries()
+{
+  this->DirectoryEntries.clear();
+}
+
+void cmFileSet::AddDirectoryEntry(BT<std::string> directories)
+{
+  this->DirectoryEntries.push_back(std::move(directories));
+}
+
+void cmFileSet::ClearFileEntries()
+{
+  this->FileEntries.clear();
+}
+
+void cmFileSet::AddFileEntry(BT<std::string> files)
+{
+  this->FileEntries.push_back(std::move(files));
+}
+
+std::vector<std::unique_ptr<cmCompiledGeneratorExpression>>
+cmFileSet::CompileFileEntries() const
+{
+  std::vector<std::unique_ptr<cmCompiledGeneratorExpression>> result;
+
+  for (auto const& entry : this->FileEntries) {
+    for (auto const& ex : cmExpandedList(entry.Value)) {
+      cmGeneratorExpression ge(entry.Backtrace);
+      auto cge = ge.Parse(ex);
+      result.push_back(std::move(cge));
+    }
+  }
+
+  return result;
+}
+
+std::vector<std::unique_ptr<cmCompiledGeneratorExpression>>
+cmFileSet::CompileDirectoryEntries() const
+{
+  std::vector<std::unique_ptr<cmCompiledGeneratorExpression>> result;
+
+  for (auto const& entry : this->DirectoryEntries) {
+    for (auto const& ex : cmExpandedList(entry.Value)) {
+      cmGeneratorExpression ge(entry.Backtrace);
+      auto cge = ge.Parse(ex);
+      result.push_back(std::move(cge));
+    }
+  }
+
+  return result;
+}
+
+std::vector<std::string> cmFileSet::EvaluateDirectoryEntries(
+  const std::vector<std::unique_ptr<cmCompiledGeneratorExpression>>& cges,
+  cmLocalGenerator* lg, const std::string& config,
+  const cmGeneratorTarget* target,
+  cmGeneratorExpressionDAGChecker* dagChecker) const
+{
+  std::vector<std::string> result;
+  for (auto const& cge : cges) {
+    auto entry = cge->Evaluate(lg, config, target, dagChecker);
+    auto dirs = cmExpandedList(entry);
+    for (std::string dir : dirs) {
+      if (!cmSystemTools::FileIsFullPath(dir)) {
+        dir = cmStrCat(lg->GetCurrentSourceDirectory(), '/', dir);
+      }
+      auto collapsedDir = cmSystemTools::CollapseFullPath(dir);
+      for (auto const& priorDir : result) {
+        auto collapsedPriorDir = cmSystemTools::CollapseFullPath(priorDir);
+        if (!cmSystemTools::SameFile(collapsedDir, collapsedPriorDir) &&
+            (cmSystemTools::IsSubDirectory(collapsedDir, collapsedPriorDir) ||
+             cmSystemTools::IsSubDirectory(collapsedPriorDir, collapsedDir))) {
+          lg->GetCMakeInstance()->IssueMessage(
+            MessageType::FATAL_ERROR,
+            cmStrCat(
+              "Base directories in file set cannot be subdirectories of each "
+              "other:\n  ",
+              priorDir, "\n  ", dir),
+            cge->GetBacktrace());
+          return {};
+        }
+      }
+      result.push_back(dir);
+    }
+  }
+  return result;
+}
+
+void cmFileSet::EvaluateFileEntry(
+  const std::vector<std::string>& dirs,
+  std::map<std::string, std::vector<std::string>>& filesPerDir,
+  const std::unique_ptr<cmCompiledGeneratorExpression>& cge,
+  cmLocalGenerator* lg, const std::string& config,
+  const cmGeneratorTarget* target,
+  cmGeneratorExpressionDAGChecker* dagChecker) const
+{
+  auto files = cge->Evaluate(lg, config, target, dagChecker);
+  for (std::string file : cmExpandedList(files)) {
+    if (!cmSystemTools::FileIsFullPath(file)) {
+      file = cmStrCat(lg->GetCurrentSourceDirectory(), '/', file);
+    }
+    auto collapsedFile = cmSystemTools::CollapseFullPath(file);
+    bool found = false;
+    std::string relDir;
+    for (auto const& dir : dirs) {
+      auto collapsedDir = cmSystemTools::CollapseFullPath(dir);
+      if (cmSystemTools::IsSubDirectory(collapsedFile, collapsedDir)) {
+        found = true;
+        relDir = cmSystemTools::GetParentDirectory(
+          cmSystemTools::RelativePath(collapsedDir, collapsedFile));
+        break;
+      }
+    }
+    if (!found) {
+      std::ostringstream e;
+      e << "File:\n  " << file
+        << "\nmust be in one of the file set's base directories:";
+      for (auto const& dir : dirs) {
+        e << "\n  " << dir;
+      }
+      lg->GetCMakeInstance()->IssueMessage(MessageType::FATAL_ERROR, e.str(),
+                                           cge->GetBacktrace());
+      return;
+    }
+
+    filesPerDir[relDir].push_back(file);
+  }
+}