natvis support in build system + some natvis

tools/build_system.c

@@ -1221,6 +1221,14 @@ static void GenerateProject(const char* projectName, const char* projectDir, con
         CollectFiles(projectDir, NULL, ".inl", srcFiles);
     }
 
+    FilePathList* natvisFiles = CreateFilePathList();
+    if (DirectoryExists("Natvis")) {
+        CollectFiles("Natvis", NULL, ".natvis", natvisFiles);
+    }
+    if (FileExists("External\\imgui\\misc\\debuggers\\imgui.natvis")) {
+        FilePathListAdd(natvisFiles, "External\\imgui\\misc\\debuggers\\imgui.natvis");
+    }
+
     char* buf = (char*)ArenaPush(4 * 1024 * 1024);
     int offset = 0;
 
@@ -1315,6 +1323,14 @@ static void GenerateProject(const char* projectName, const char* projectDir, con
     }
     offset += sprintf_s(buf + offset, (4 * 1024 * 1024) - offset, "  </ItemGroup>\n");
 
+    if (natvisFiles->Count > 0) {
+        offset += sprintf_s(buf + offset, (4 * 1024 * 1024) - offset, "  <ItemGroup>\n");
+        for (int i = 0; i < natvisFiles->Count; i++) {
+            offset += sprintf_s(buf + offset, (4 * 1024 * 1024) - offset, "    <Natvis Include=\"..\\%s\" />\n", natvisFiles->Paths[i]);
+        }
+        offset += sprintf_s(buf + offset, (4 * 1024 * 1024) - offset, "  </ItemGroup>\n");
+    }
+
     offset += sprintf_s(buf + offset, (4 * 1024 * 1024) - offset,
         "  <Import Project=\"$(VCTargetsPath)\\Microsoft.Cpp.targets\" />\n"
         "  <ImportGroup Label=\"ExtensionTargets\">\n"
@@ -1373,6 +1389,16 @@ static void GenerateProject(const char* projectName, const char* projectDir, con
         }
     }
 
+    if (natvisFiles->Count > 0) {
+        bool found = false;
+        for (int f = 0; f < filterCount; f++) {
+            if (_stricmp(filters[f], "Natvis") == 0) { found = true; break; }
+        }
+        if (!found && filterCount < 512) {
+            strcpy_s(filters[filterCount++], 256, "Natvis");
+        }
+    }
+
     char* filterBuf = (char*)ArenaPush(4 * 1024 * 1024);
     int filterOffset = 0;
     filterOffset += sprintf_s(filterBuf + filterOffset, (4 * 1024 * 1024) - filterOffset,
@@ -1416,6 +1442,15 @@ static void GenerateProject(const char* projectName, const char* projectDir, con
                 "    <%s Include=\"..\\%s\" />\n", type, path);
         }
     }
+
+    if (natvisFiles->Count > 0) {
+        for (int i = 0; i < natvisFiles->Count; i++) {
+            filterOffset += sprintf_s(filterBuf + filterOffset, (4 * 1024 * 1024) - filterOffset,
+                "    <Natvis Include=\"..\\%s\">\n"
+                "      <Filter>Natvis</Filter>\n"
+                "    </Natvis>\n", natvisFiles->Paths[i]);
+        }
+    }
     filterOffset += sprintf_s(filterBuf + filterOffset, (4 * 1024 * 1024) - filterOffset,
         "  </ItemGroup>\n</Project>\n");