Serialized indexes are now versioned. Old versions are not imported.

src/cache.cc

@@ -26,7 +26,7 @@ std::unique_ptr<IndexedFile> LoadCachedFile(IndexerConfig* config, const std::st
     return nullptr;
 
   optional<IndexedFile> indexed = Deserialize(filename, *file_content);
-  if (indexed)
+  if (indexed && indexed->version == IndexedFile::kCurrentVersion)
     return MakeUnique<IndexedFile>(indexed.value());
 
   return nullptr;

src/clang_args

@@ -8,6 +8,7 @@
 -IC:/Users/jacob/Desktop/superindex/indexer/third_party/doctest
 -IC:/Users/jacob/Desktop/superindex/indexer/third_party/rapidjson/include
 -IC:/Users/jacob/Desktop/superindex/indexer/third_party/sparsehash/src
+-IC:/Users/jacob/Desktop/superindex/indexer/third_party/sparsepp
 -IC:/Program Files/LLVM/include
 # OSX
 #-I/Users/jdufault/Personal/super-clang-index/third_party

src/indexer.h

@@ -465,6 +465,9 @@ struct IdCache {
 struct IndexedFile {
   IdCache id_cache;
 
+  static constexpr int kCurrentVersion = 1;
+  int version = 0;
+
   std::string path;
   int64_t last_modification_time = 0;
 

src/platform.cc

@@ -11,8 +11,6 @@
 
 namespace {
 
-bool gModificationTimeDisabled = false;
-
 // See http://stackoverflow.com/a/236803
 template<typename Out>
 void Split(const std::string &s, char delim, Out result) {
@@ -85,15 +83,6 @@ void MakeDirectoryRecursive(std::string path) {
   }
 }
 
-void DisableModificationTimeForTest() {
-  gModificationTimeDisabled = true;
-}
-
-bool IsModificationTimeDisabledForTests() {
-  return gModificationTimeDisabled;
-}
-
-
 TEST_SUITE("Platform");
 
 TEST_CASE("Split strings") {

src/platform.h

@@ -37,9 +37,6 @@ bool TryMakeDirectory(const std::string& absolute_path);
 
 void SetCurrentThreadName(const std::string& thread_name);
 
-void DisableModificationTimeForTest();
-bool IsModificationTimeDisabledForTests();
-
 int64_t GetLastModificationTime(const std::string& absolute_path);
 
 // Returns any clang arguments that are specific to the current platform.

src/platform_win.cc

@@ -183,9 +183,6 @@ void SetCurrentThreadName(const std::string& thread_name) {
 }
 
 int64_t GetLastModificationTime(const std::string& absolute_path) {
-  if (IsModificationTimeDisabledForTests())
-    return 1;
-
   struct _stat buf;
   if (_stat(absolute_path.c_str(), &buf) != 0) {
     switch (errno) {

src/serializer.cc

@@ -2,6 +2,9 @@
 
 #include "indexer.h"
 
+namespace {
+bool gTestOutputMode = false;
+}  // namespace
 
 // int
 void Reflect(Reader& visitor, int& value) {
@@ -216,13 +219,17 @@ bool ReflectMemberStart(Writer& visitor, IndexedFile& value) {
     assert(value.Resolve(it->second)->uses.size() == 0);
   }
 
+  value.version = IndexedFile::kCurrentVersion;
   DefaultReflectMemberStart(visitor);
   return true;
 }
 template<typename TVisitor>
 void Reflect(TVisitor& visitor, IndexedFile& value) {
   REFLECT_MEMBER_START();
-  REFLECT_MEMBER(last_modification_time);
+  if (!gTestOutputMode) {
+    REFLECT_MEMBER(version);
+    REFLECT_MEMBER(last_modification_time);
+  }
   REFLECT_MEMBER(dependencies);
   REFLECT_MEMBER(types);
   REFLECT_MEMBER(funcs);
@@ -276,3 +283,7 @@ optional<IndexedFile> Deserialize(std::string path, std::string serialized) {
 
   return file;
 }
+
+void SetTestOutputMode() {
+  gTestOutputMode = true;
+}

src/serializer.h

@@ -208,3 +208,5 @@ void ReflectMember(Reader& visitor, const char* name, T& value) {
 
 std::string Serialize(IndexedFile& file);
 optional<IndexedFile> Deserialize(std::string path, std::string serialized);
+
+void SetTestOutputMode();

src/test.cc

@@ -112,7 +112,7 @@ IndexedFile* FindDbForPathEnding(const std::string& path, const std::vector<std:
 }
 
 void RunTests() {
-  DisableModificationTimeForTest();
+  SetTestOutputMode();
 
   // TODO: Assert that we need to be on clang >= 3.9.1
   bool update_all = false;

tests/_empty_test.cc

@@ -1,6 +1,4 @@
 /*
 OUTPUT:
-{
+{}
-  "last_modification_time": 1
-}
 */

tests/class_forward_declaration.cc

@@ -6,7 +6,6 @@ class Foo;
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/constructors/constructor.cc

@@ -11,7 +11,6 @@ void foo() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/constructors/destructor.cc

@@ -16,7 +16,6 @@ void foo() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/constructors/invalid_reference.cc

@@ -6,7 +6,6 @@ Foo::Foo() {}
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/declaration_vs_definition/class.cc

@@ -8,7 +8,6 @@ class Foo;
 //       for comments.
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/declaration_vs_definition/class_member.cc

@@ -5,7 +5,6 @@ class Foo {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/declaration_vs_definition/class_member_static.cc

@@ -7,7 +7,6 @@ int Foo::foo;
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/declaration_vs_definition/func.cc

@@ -7,7 +7,6 @@ void foo();
 // Note: we always use the latest seen ("most local") definition/declaration.
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:@F@foo#",

tests/declaration_vs_definition/method.cc

@@ -9,7 +9,6 @@ void Foo::def() {}
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/enums/enum_class_decl.cc

@@ -6,7 +6,6 @@ enum class Foo {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@E@Foo",

tests/enums/enum_decl.cc

@@ -6,7 +6,6 @@ enum Foo {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@E@Foo",

tests/enums/enum_inherit.cc

@@ -6,7 +6,6 @@ enum Foo : int {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@E@Foo",

tests/enums/enum_usage.cc

@@ -8,7 +8,6 @@ Foo x = Foo::A;
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@E@Foo",

tests/foobar.cc

@@ -11,7 +11,6 @@ Foo<B> b;
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@E@A",

tests/function_declaration.cc

@@ -3,7 +3,6 @@ void foo(int a, int b);
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:@F@foo#I#I#",

tests/function_declaration_definition.cc

@@ -5,7 +5,6 @@ void foo() {}
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:@F@foo#",

tests/function_definition.cc

@@ -3,7 +3,6 @@ void foo() {}
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:@F@foo#",

tests/inheritance/class_inherit.cc

@@ -4,7 +4,6 @@ class Derived : public Parent {};
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Parent",

tests/inheritance/class_inherit_templated_parent.cc

@@ -15,7 +15,6 @@ class Derived : Base1<3>, Base2<Derived>, Derived1<4>, Derived2<Derived> {};
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@ST>1#Ni@Base1",

tests/inheritance/class_multiple_inherit.cc

@@ -6,7 +6,6 @@ class Derived : public MiddleA, public MiddleB {};
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Root",

tests/inheritance/function_override.cc

@@ -8,7 +8,6 @@ class Derived : public Root {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Root",

tests/inheritance/interface_pure_virtual.cc

@@ -5,7 +5,6 @@ class IFoo {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@IFoo",

tests/method_declaration.cc

@@ -9,7 +9,6 @@ class Foo {
 
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/method_definition.cc

@@ -7,7 +7,6 @@ void Foo::foo() {}
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/method_inline_declaration.cc

@@ -5,7 +5,6 @@ class Foo {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/multi_file/funky_enum.cc

@@ -8,7 +8,6 @@ enum Foo {
 
 OUTPUT: funky_enum.h
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@E@Foo",
@@ -48,7 +47,6 @@ OUTPUT: funky_enum.h
 }
 OUTPUT: funky_enum.cc
 {
-  "last_modification_time": 1,
   "dependencies": ["C:/Users/jacob/Desktop/superindex/indexer/tests/multi_file/funky_enum.h"],
   "types": [{
       "id": 0,

tests/multi_file/impl.cc

@@ -7,7 +7,6 @@ void Impl() {
 /*
 OUTPUT: header.h
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Base",
@@ -111,7 +110,6 @@ OUTPUT: header.h
 }
 OUTPUT: impl.cc
 {
-  "last_modification_time": 1,
   "dependencies": ["C:/Users/jacob/Desktop/superindex/indexer/tests/multi_file/header.h"],
   "funcs": [{
       "id": 0,

tests/multi_file/simple_impl.cc

@@ -7,7 +7,6 @@ void impl() {
 /*
 OUTPUT: simple_header.h
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:@F@header#",
@@ -18,7 +17,6 @@ OUTPUT: simple_header.h
 }
 OUTPUT: simple_impl.cc
 {
-  "last_modification_time": 1,
   "dependencies": ["C:/Users/jacob/Desktop/superindex/indexer/tests/multi_file/simple_header.h"],
   "funcs": [{
       "id": 0,

tests/multi_file/static.cc

@@ -5,7 +5,6 @@ void Buffer::CreateSharedBuffer() {}
 /*
 OUTPUT: static.h
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Buffer",
@@ -27,7 +26,6 @@ OUTPUT: static.h
 }
 OUTPUT: static.cc
 {
-  "last_modification_time": 1,
   "dependencies": ["C:/Users/jacob/Desktop/superindex/indexer/tests/multi_file/static.h"],
   "types": [{
       "id": 0,

tests/namespaces/anonymous_function.cc

@@ -5,7 +5,6 @@ void foo();
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:anonymous_function.cc@aN@F@foo#",

tests/namespaces/function_declaration.cc

@@ -5,7 +5,6 @@ void foo(int a, int b);
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:@N@hello@F@foo#I#I#",

tests/namespaces/function_definition.cc

@@ -5,7 +5,6 @@ void foo() {}
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:@N@hello@F@foo#",

tests/namespaces/method_declaration.cc

@@ -7,7 +7,6 @@ class Foo {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@N@hello@S@Foo",

tests/namespaces/method_definition.cc

@@ -9,7 +9,6 @@ void Foo::foo() {}
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@N@hello@S@Foo",

tests/namespaces/method_inline_declaration.cc

@@ -7,7 +7,6 @@ class Foo {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@N@hello@S@Foo",

tests/namespaces/namespace_reference.cc

@@ -12,7 +12,6 @@ void Runner() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:@N@ns@F@Accept#I#",

tests/templates/func_specialized_template_param.cc

@@ -10,7 +10,6 @@ void Foo::Bar(Template<double>&) {}
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@ST>1#T@Template",

tests/templates/implicit_variable_instantiation.cc

@@ -17,7 +17,6 @@ namespace ns {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@N@ns@E@VarType",

tests/templates/namespace_template_class_template_func_usage_folded_into_one.cc

@@ -14,7 +14,6 @@ namespace ns {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@N@ns@ST>1#T@Foo",

tests/templates/namespace_template_type_usage_folded_into_one.cc

@@ -9,7 +9,6 @@ namespace ns {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@N@ns@ST>1#T@Foo",

tests/templates/specialized_func_definition.cc

@@ -15,7 +15,6 @@ void Template<void>::Foo() {}
 
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@ST>1#T@Template",

tests/templates/template_class_func_usage_folded_into_one.cc

@@ -11,7 +11,6 @@ int b = Foo<bool>::foo();
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@ST>1#T@Foo",

tests/templates/template_class_template_func_usage_folded_into_one.cc

@@ -12,7 +12,6 @@ int b = Foo<bool>::foo<double>();
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@ST>1#T@Foo",

tests/templates/template_class_type_usage_folded_into_one.cc

@@ -30,7 +30,6 @@ VarDecl b
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@E@A",

tests/templates/template_class_var_usage_folded_into_one.cc

@@ -9,7 +9,6 @@ int b = Foo<bool>::var;
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@ST>1#T@Foo",

tests/templates/template_func_usage_folded_into_one.cc

@@ -12,7 +12,6 @@ int b = foo<bool>();
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:template_func_usage_folded_into_one.cc@FT@>1#Tfoo#I#",

tests/templates/template_type_usage_folded_into_one.cc

@@ -7,7 +7,6 @@ Foo<bool> b;
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@ST>1#T@Foo",

tests/templates/template_var_usage_folded_into_one.cc

@@ -30,7 +30,6 @@ UnexposedDecl var
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@E@A",

tests/types/anonymous_struct.cc

@@ -6,7 +6,6 @@ union vector3 {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@U@vector3",

tests/unions/union_decl.cc

@@ -6,7 +6,6 @@ union Foo {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@U@Foo",

tests/unions/union_usage.cc

@@ -14,7 +14,6 @@ void act(Foo*) {
 
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@U@Foo",

tests/usage/func_called_from_constructor.cc

@@ -11,7 +11,6 @@ Foo::Foo() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/usage/func_called_from_macro_argument.cc

@@ -9,7 +9,6 @@ void caller() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:@F@called#b#b#",

tests/usage/func_called_from_template.cc

@@ -14,7 +14,6 @@ void foo() {
 // called() is never referenced.
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:@F@called#",

tests/usage/func_called_implicit_ctor.cc

@@ -11,7 +11,6 @@ Wrapper caller() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Wrapper",

tests/usage/func_usage_addr_func.cc

@@ -10,7 +10,6 @@ void user() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:@F@consume#*v#",

tests/usage/func_usage_addr_method.cc

@@ -10,7 +10,6 @@ void user() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/usage/func_usage_call_func.cc

@@ -6,7 +6,6 @@ void caller() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:@F@called#",

tests/usage/func_usage_call_method.cc

@@ -10,7 +10,6 @@ void user() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/usage/func_usage_class_inline_var_def.cc

@@ -9,7 +9,6 @@ class Foo {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/usage/func_usage_forward_decl_func.cc

@@ -6,7 +6,6 @@ void usage() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:@F@foo#",

tests/usage/func_usage_forward_decl_method.cc

@@ -9,7 +9,6 @@ void usage() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/usage/func_usage_template_func.cc

@@ -9,7 +9,6 @@ void foo() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:@FT@>1#Taccept#t0.0#v#",

tests/usage/type_usage_as_template_parameter.cc

@@ -13,7 +13,6 @@ unique_ptr<S>* return_type() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@ST>1#T@unique_ptr",

tests/usage/type_usage_as_template_parameter_complex.cc

@@ -81,7 +81,6 @@ unique_ptr<S1, S2>* Foo::foo() { return nullptr; }
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@ST>2#T#T@unique_ptr",

tests/usage/type_usage_as_template_parameter_simple.cc

@@ -8,7 +8,6 @@ static unique_ptr<S> foo;
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@ST>1#T@unique_ptr",

tests/usage/type_usage_declare_extern.cc

@@ -4,7 +4,6 @@ extern T t;
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@T",

tests/usage/type_usage_declare_field.cc

@@ -9,7 +9,6 @@ struct Foo {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@ForwardType",

tests/usage/type_usage_declare_local.cc

@@ -9,7 +9,6 @@ void Foo() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@ForwardType",

tests/usage/type_usage_declare_param.cc

@@ -6,7 +6,6 @@ void foo(ForwardType* f, ImplementedType a) {}
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@ForwardType",

tests/usage/type_usage_declare_param_prototype.cc

@@ -11,7 +11,6 @@ void foo(Foo* f, Foo*) {}
 
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/usage/type_usage_declare_param_unnamed.cc

@@ -3,7 +3,6 @@ void foo(ForwardType*) {}
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@ForwardType",

tests/usage/type_usage_declare_qualifiers.cc

@@ -9,7 +9,6 @@ void foo(Type& a0, const Type& a1) {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Type",

tests/usage/type_usage_declare_static.cc

@@ -3,7 +3,6 @@ static Type t;
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Type",

tests/usage/type_usage_on_return_type.cc

@@ -20,7 +20,6 @@ static Type* bar() {}
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Type",

tests/usage/type_usage_typedef_and_using.cc

@@ -12,7 +12,6 @@ void accept3(Foo3*) {}
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/usage/type_usage_typedef_and_using_template.cc

@@ -7,7 +7,6 @@ typedef Foo<Foo1> Foo2;
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@ST>1#T@Foo",

tests/usage/type_usage_various.cc

@@ -12,7 +12,6 @@ extern Foo foo;
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/usage/usage_inside_of_call.cc

@@ -17,7 +17,6 @@ void foo() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/usage/usage_inside_of_call_simple.cc

@@ -9,7 +9,6 @@ void foo() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:@F@called#I#",

tests/usage/var_usage_call_function.cc

@@ -10,7 +10,6 @@ void caller() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:@F@called#",

tests/usage/var_usage_class_member.cc

@@ -20,7 +20,6 @@ void foo() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/usage/var_usage_class_member_static.cc

@@ -11,7 +11,6 @@ void foo() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@S@Foo",

tests/usage/var_usage_cstyle_cast.cc

@@ -10,7 +10,6 @@ const VarType Holder::static_var;
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "types": [{
       "id": 0,
       "usr": "c:@E@VarType",

tests/usage/var_usage_extern.cc

@@ -6,7 +6,6 @@ void foo() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:@F@foo#",

tests/usage/var_usage_func_parameter.cc

@@ -4,7 +4,6 @@ void foo(int a) {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:@F@foo#I#",

tests/usage/var_usage_local.cc

@@ -5,7 +5,6 @@ void foo() {
 /*
 OUTPUT:
 {
-  "last_modification_time": 1,
   "funcs": [{
       "id": 0,
       "usr": "c:@F@foo#",