1 files changed, 110 insertions, 0 deletions
diff --git a/Source/cmTargetPropertyComputer.h b/Source/cmTargetPropertyComputer.h
new file mode 100644
index 0000000..45d31be
--- /dev/null
+++ b/Source/cmTargetPropertyComputer.h
@@ -0,0 +1,110 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#ifndef cmTargetPropertyComputer_h
+#define cmTargetPropertyComputer_h
+
+#include <cmConfigure.h> // IWYU pragma: keep
+
+#include <string>
+
+#include "cmAlgorithms.h"
+#include "cmListFileCache.h"
+#include "cmStateTypes.h"
+#include "cmSystemTools.h"
+
+class cmMessenger;
+
+class cmTargetPropertyComputer
+{
+public:
+  template <typename Target>
+  static const char* GetProperty(Target const* tgt, const std::string& prop,
+                                 cmMessenger* messenger,
+                                 cmListFileBacktrace const& context)
+  {
+    if (const char* loc = GetLocation(tgt, prop, messenger, context)) {
+      return loc;
+    }
+    if (cmSystemTools::GetFatalErrorOccured()) {
+      return CM_NULLPTR;
+    }
+    if (prop == "SOURCES") {
+      return GetSources(tgt, messenger, context);
+    }
+    return CM_NULLPTR;
+  }
+
+  static bool WhiteListedInterfaceProperty(const std::string& prop);
+
+  static bool PassesWhitelist(cmStateEnums::TargetType tgtType,
+                              std::string const& prop, cmMessenger* messenger,
+                              cmListFileBacktrace const& context);
+
+private:
+  static bool HandleLocationPropertyPolicy(std::string const& tgtName,
+                                           cmMessenger* messenger,
+                                           cmListFileBacktrace const& context);
+
+  template <typename Target>
+  static const char* ComputeLocationForBuild(Target const* tgt);
+  template <typename Target>
+  static const char* ComputeLocation(Target const* tgt,
+                                     std::string const& config);
+
+  template <typename Target>
+  static const char* GetLocation(Target const* tgt, std::string const& prop,
+                                 cmMessenger* messenger,
+                                 cmListFileBacktrace const& context)
+
+  {
+    // Watch for special "computed" properties that are dependent on
+    // other properties or variables.  Always recompute them.
+    if (tgt->GetType() == cmStateEnums::EXECUTABLE ||
+        tgt->GetType() == cmStateEnums::STATIC_LIBRARY ||
+        tgt->GetType() == cmStateEnums::SHARED_LIBRARY ||
+        tgt->GetType() == cmStateEnums::MODULE_LIBRARY ||
+        tgt->GetType() == cmStateEnums::UNKNOWN_LIBRARY) {
+      static const std::string propLOCATION = "LOCATION";
+      if (prop == propLOCATION) {
+        if (!tgt->IsImported() &&
+            !HandleLocationPropertyPolicy(tgt->GetName(), messenger,
+                                          context)) {
+          return CM_NULLPTR;
+        }
+        return ComputeLocationForBuild(tgt);
+      }
+
+      // Support "LOCATION_<CONFIG>".
+      if (cmHasLiteralPrefix(prop, "LOCATION_")) {
+        if (!tgt->IsImported() &&
+            !HandleLocationPropertyPolicy(tgt->GetName(), messenger,
+                                          context)) {
+          return CM_NULLPTR;
+        }
+        const char* configName = prop.c_str() + 9;
+        return ComputeLocation(tgt, configName);
+      }
+
+      // Support "<CONFIG>_LOCATION".
+      if (cmHasLiteralSuffix(prop, "_LOCATION") &&
+          !cmHasLiteralPrefix(prop, "XCODE_ATTRIBUTE_")) {
+        std::string configName(prop.c_str(), prop.size() - 9);
+        if (configName != "IMPORTED") {
+          if (!tgt->IsImported() &&
+              !HandleLocationPropertyPolicy(tgt->GetName(), messenger,
+                                            context)) {
+            return CM_NULLPTR;
+          }
+          return ComputeLocation(tgt, configName);
+        }
+      }
+    }
+    return CM_NULLPTR;
+  }
+
+  template <typename Target>
+  static const char* GetSources(Target const* tgt, cmMessenger* messenger,
+                                cmListFileBacktrace const& context);
+};
+
+#endif