cmTargetPropertyComputer: Simplify by restoring use of cmMakefile

Logically revert commit 390a7d8647 (cmTargetPropertyComputer: Implement
GetProperty without cmMakefile, 2016-10-13, v3.8.0-rc1~445^2~9).
It relied on using `cmListFileBacktrace` to get a scope in which to
look up policies.

This does remove a backtrace from `LOCATION` property errors at generate
time, but the backtrace we reported before was incorrect.  It pointed at
the addition of a target, not to the reference to the property.

1 files changed, 10 insertions, 18 deletions

diff --git a/Source/cmTargetPropertyComputer.h b/Source/cmTargetPropertyComputer.h
index e61a1fc..82c6355 100644
--- a/Source/cmTargetPropertyComputer.h
+++ b/Source/cmTargetPropertyComputer.h
@@ -6,38 +6,35 @@
 
 #include <string>
 
-#include "cmListFileCache.h"
 #include "cmStateTypes.h"
 #include "cmStringAlgorithms.h"
 #include "cmSystemTools.h"
 #include "cmValue.h"
 
-class cmMessenger;
+class cmMakefile;
 
 class cmTargetPropertyComputer
 {
 public:
   template <typename Target>
   static cmValue GetProperty(Target const* tgt, const std::string& prop,
-                             cmMessenger* messenger,
-                             cmListFileBacktrace const& context)
+                             cmMakefile const& mf)
   {
-    if (cmValue loc = GetLocation(tgt, prop, messenger, context)) {
+    if (cmValue loc = GetLocation(tgt, prop, mf)) {
       return loc;
     }
     if (cmSystemTools::GetFatalErrorOccured()) {
       return nullptr;
     }
     if (prop == "SOURCES") {
-      return GetSources(tgt, messenger, context);
+      return GetSources(tgt, mf);
     }
     return nullptr;
   }
 
 private:
   static bool HandleLocationPropertyPolicy(std::string const& tgtName,
-                                           cmMessenger* messenger,
-                                           cmListFileBacktrace const& context);
+                                           cmMakefile const& mf);
 
   template <typename Target>
   static const std::string& ComputeLocationForBuild(Target const* tgt);
@@ -47,8 +44,7 @@ private:
 
   template <typename Target>
   static cmValue GetLocation(Target const* tgt, std::string const& prop,
-                             cmMessenger* messenger,
-                             cmListFileBacktrace const& context)
+                             cmMakefile const& mf)
 
   {
     // Watch for special "computed" properties that are dependent on
@@ -61,8 +57,7 @@ private:
       static const std::string propLOCATION = "LOCATION";
       if (prop == propLOCATION) {
         if (!tgt->IsImported() &&
-            !HandleLocationPropertyPolicy(tgt->GetName(), messenger,
-                                          context)) {
+            !HandleLocationPropertyPolicy(tgt->GetName(), mf)) {
           return nullptr;
         }
         return cmValue(ComputeLocationForBuild(tgt));
@@ -71,8 +66,7 @@ private:
       // Support "LOCATION_<CONFIG>".
       if (cmHasLiteralPrefix(prop, "LOCATION_")) {
         if (!tgt->IsImported() &&
-            !HandleLocationPropertyPolicy(tgt->GetName(), messenger,
-                                          context)) {
+            !HandleLocationPropertyPolicy(tgt->GetName(), mf)) {
           return nullptr;
         }
         std::string configName = prop.substr(9);
@@ -85,8 +79,7 @@ private:
         std::string configName(prop.c_str(), prop.size() - 9);
         if (configName != "IMPORTED") {
           if (!tgt->IsImported() &&
-              !HandleLocationPropertyPolicy(tgt->GetName(), messenger,
-                                            context)) {
+              !HandleLocationPropertyPolicy(tgt->GetName(), mf)) {
             return nullptr;
           }
           return cmValue(ComputeLocation(tgt, configName));
@@ -97,6 +90,5 @@ private:
   }
 
   template <typename Target>
-  static cmValue GetSources(Target const* tgt, cmMessenger* messenger,
-                            cmListFileBacktrace const& context);
+  static cmValue GetSources(Target const* tgt, cmMakefile const& mf);
 };