deps: cherry-pick dbfe4a49d8 from upstream V8

Original commit message:

    Introduce ScriptOrModule and HostDefinedOptions

    This patch introduces a new container type ScriptOrModule which
    provides the name and the host defined options of the script/module.

    This patch also introduces a new PrimitivesArray that can hold
    Primitive values, which the embedder can use to store metadata.

    The HostDefinedOptions is passed to V8 through the ScriptOrigin, and
    passed back to the embedder through HostImportModuleDynamically for
    module loading.

    Bug: v8:5785, v8:6658, v8:6683
    Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
    Change-Id: I56c26fc9a680b273ac0a6691e5ad75f15b8dc80a
    Reviewed-on: https://chromium-review.googlesource.com/622158
    Reviewed-by: Adam Klein <adamk@chromium.org>
    Reviewed-by: Georg Neis <neis@chromium.org>
    Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#47724}

Backport-PR-URL: #17823
PR-URL: #16889
Refs: v8/v8@dbfe4a4
Refs: #15713
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

deps/v8/include/v8-version.h

@@ -11,7 +11,7 @@
 #define V8_MAJOR_VERSION 6
 #define V8_MINOR_VERSION 2
 #define V8_BUILD_NUMBER 414
-#define V8_PATCH_LEVEL 54
+#define V8_PATCH_LEVEL 55
 
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)

deps/v8/include/v8.h

@@ -104,6 +104,7 @@ class String;
 class StringObject;
 class Symbol;
 class SymbolObject;
+class PrimitiveArray;
 class Private;
 class Uint32;
 class Utils;
@@ -978,6 +979,48 @@ class V8_EXPORT Data {
   Data();
 };
 
+/**
+ * This is an unfinished experimental feature, and is only exposed
+ * here for internal testing purposes. DO NOT USE.
+ *
+ * A container type that holds relevant metadata for module loading.
+ *
+ * This is passed back to the embedder as part of
+ * HostImportDynamicallyCallback for module loading.
+ */
+class V8_EXPORT ScriptOrModule {
+ public:
+  /**
+   * The name that was passed by the embedder as ResourceName to the
+   * ScriptOrigin. This can be either a v8::String or v8::Undefined.
+   */
+  Local<Value> GetResourceName();
+
+  /**
+   * The options that were passed by the embedder as HostDefinedOptions to
+   * the ScriptOrigin.
+   */
+  Local<PrimitiveArray> GetHostDefinedOptions();
+};
+
+/**
+ * This is an unfinished experimental feature, and is only exposed
+ * here for internal testing purposes. DO NOT USE.
+ *
+ * An array to hold Primitive values. This is used by the embedder to
+ * pass host defined options to the ScriptOptions during compilation.
+ *
+ * This is passed back to the embedder as part of
+ * HostImportDynamicallyCallback for module loading.
+ *
+ */
+class V8_EXPORT PrimitiveArray {
+ public:
+  static Local<PrimitiveArray> New(Isolate* isolate, int length);
+  int Length() const;
+  void Set(int index, Local<Primitive> item);
+  Local<Primitive> Get(int index);
+};
 
 /**
  * The optional attributes of ScriptOrigin.
@@ -1027,13 +1070,17 @@ class ScriptOrigin {
       Local<Value> source_map_url = Local<Value>(),
       Local<Boolean> resource_is_opaque = Local<Boolean>(),
       Local<Boolean> is_wasm = Local<Boolean>(),
-      Local<Boolean> is_module = Local<Boolean>());
+      Local<Boolean> is_module = Local<Boolean>() /*,
+      // Backed out for ABI compatibility with V8 6.2
+      Local<PrimitiveArray> host_defined_options = Local<PrimitiveArray>() */);
 
   V8_INLINE Local<Value> ResourceName() const;
   V8_INLINE Local<Integer> ResourceLineOffset() const;
   V8_INLINE Local<Integer> ResourceColumnOffset() const;
   V8_INLINE Local<Integer> ScriptID() const;
   V8_INLINE Local<Value> SourceMapUrl() const;
+  // Backed out for ABI compatibility with V8 6.2
+  // V8_INLINE Local<PrimitiveArray> HostDefinedOptions() const;
   V8_INLINE ScriptOriginOptions Options() const { return options_; }
 
  private:
@@ -1043,6 +1090,8 @@ class ScriptOrigin {
   ScriptOriginOptions options_;
   Local<Integer> script_id_;
   Local<Value> source_map_url_;
+  // Backed out for ABI compatibility with V8 6.2
+  // Local<PrimitiveArray> host_defined_options_;
 };
 
 /**
@@ -1289,6 +1338,7 @@ class V8_EXPORT ScriptCompiler {
     Local<Integer> resource_column_offset;
     ScriptOriginOptions resource_options;
     Local<Value> source_map_url;
+    // Local<PrimitiveArray> host_defined_options;
 
     // Cached data from previous compilation (if a kConsume*Cache flag is
     // set), or hold newly generated cache data (kProduce*Cache flags) are
@@ -6156,8 +6206,8 @@ typedef void (*DeprecatedCallCompletedCallback)();
  * embedder to load a module. This is used as part of the dynamic
  * import syntax.
  *
- * The referrer is the name of the file which calls the dynamic
- * import. The referrer can be used to resolve the module location.
+ * The referrer contains metadata about the script/module that calls
+ * import.
  *
  * The specifier is the name of the module that should be imported.
  *
@@ -6172,7 +6222,8 @@ typedef void (*DeprecatedCallCompletedCallback)();
  * that exception by returning an empty MaybeLocal.
  */
 typedef MaybeLocal<Promise> (*HostImportModuleDynamicallyCallback)(
-    Local<Context> context, Local<String> referrer, Local<String> specifier);
+    Local<Context> context, Local<ScriptOrModule> referrer,
+    Local<String> specifier);
 
 /**
  * PromiseHook with type kInit is called when a new promise is
@@ -9511,7 +9562,9 @@ ScriptOrigin::ScriptOrigin(Local<Value> resource_name,
                            Local<Integer> script_id,
                            Local<Value> source_map_url,
                            Local<Boolean> resource_is_opaque,
-                           Local<Boolean> is_wasm, Local<Boolean> is_module)
+                           Local<Boolean> is_wasm, Local<Boolean> is_module /*,
+                           // Backed out for ABI compatibility with V8 6.2
+                           Local<PrimitiveArray> host_defined_options */)
     : resource_name_(resource_name),
       resource_line_offset_(resource_line_offset),
       resource_column_offset_(resource_column_offset),
@@ -9521,10 +9574,16 @@ ScriptOrigin::ScriptOrigin(Local<Value> resource_name,
                !is_wasm.IsEmpty() && is_wasm->IsTrue(),
                !is_module.IsEmpty() && is_module->IsTrue()),
       script_id_(script_id),
-      source_map_url_(source_map_url) {}
+      source_map_url_(source_map_url) /*,
+      // Backed out for ABI compatibility with V8 6.2
+      host_defined_options_(host_defined_options) */ {}
 
 Local<Value> ScriptOrigin::ResourceName() const { return resource_name_; }
 
+// Backed out for ABI compatibility with V8 6.2
+// Local<PrimitiveArray> ScriptOrigin::HostDefinedOptions() const {
+//   return host_defined_options_;
+// }
 
 Local<Integer> ScriptOrigin::ResourceLineOffset() const {
   return resource_line_offset_;
@@ -9541,7 +9600,6 @@ Local<Integer> ScriptOrigin::ScriptID() const { return script_id_; }
 
 Local<Value> ScriptOrigin::SourceMapUrl() const { return source_map_url_; }
 
-
 ScriptCompiler::Source::Source(Local<String> string, const ScriptOrigin& origin,
                                CachedData* data)
     : source_string(string),
@@ -9550,9 +9608,10 @@ ScriptCompiler::Source::Source(Local<String> string, const ScriptOrigin& origin,
       resource_column_offset(origin.ResourceColumnOffset()),
       resource_options(origin.Options()),
       source_map_url(origin.SourceMapUrl()),
+      // Backed out for ABI compatibility with V8 6.2
+      // host_defined_options(origin.HostDefinedOptions()),
       cached_data(data) {}
 
-
 ScriptCompiler::Source::Source(Local<String> string,
                                CachedData* data)
     : source_string(string), cached_data(data) {}

deps/v8/src/api.cc

@@ -278,6 +278,9 @@ static ScriptOrigin GetScriptOriginForScript(i::Isolate* isolate,
                                              i::Handle<i::Script> script) {
   i::Handle<i::Object> scriptName(script->GetNameOrSourceURL(), isolate);
   i::Handle<i::Object> source_map_url(script->source_mapping_url(), isolate);
+  // Backed out for ABI compatibility with V8 6.2
+  // i::Handle<i::FixedArray> host_defined_options(script->host_defined_options(),
+  //                                               isolate);
   v8::Isolate* v8_isolate =
       reinterpret_cast<v8::Isolate*>(script->GetIsolate());
   ScriptOriginOptions options(script->origin_options());
@@ -290,7 +293,9 @@ static ScriptOrigin GetScriptOriginForScript(i::Isolate* isolate,
       Utils::ToLocal(source_map_url),
       v8::Boolean::New(v8_isolate, options.IsOpaque()),
       v8::Boolean::New(v8_isolate, script->type() == i::Script::TYPE_WASM),
-      v8::Boolean::New(v8_isolate, options.IsModule()));
+      v8::Boolean::New(v8_isolate, options.IsModule()) /*,
+      // Backed out for ABI compatibility with V8 6.2
+      Utils::ToLocal(host_defined_options) */);
   return origin;
 }
 
@@ -2082,13 +2087,70 @@ Local<Value> Script::Run() {
   RETURN_TO_LOCAL_UNCHECKED(Run(context), Value);
 }
 
+Local<Value> ScriptOrModule::GetResourceName() {
+  i::Handle<i::Script> obj = Utils::OpenHandle(this);
+  i::Isolate* isolate = obj->GetIsolate();
+  ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
+  i::Handle<i::Object> val(obj->name(), isolate);
+  return ToApiHandle<Value>(val);
+}
+
+Local<PrimitiveArray> ScriptOrModule::GetHostDefinedOptions() {
+  i::Handle<i::Script> obj = Utils::OpenHandle(this);
+  i::Isolate* isolate = obj->GetIsolate();
+  ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
+  // Backed out for ABI compatibility with V8 6.2
+  // i::Handle<i::FixedArray> val(obj->host_defined_options(), isolate);
+  // return ToApiHandle<PrimitiveArray>(val);
+  return Local<PrimitiveArray>();
+}
 
 Local<UnboundScript> Script::GetUnboundScript() {
   i::Handle<i::Object> obj = Utils::OpenHandle(this);
   return ToApiHandle<UnboundScript>(
       i::Handle<i::SharedFunctionInfo>(i::JSFunction::cast(*obj)->shared()));
 }
 
+// static
+Local<PrimitiveArray> PrimitiveArray::New(Isolate* v8_isolate, int length) {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
+  ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
+  Utils::ApiCheck(length >= 0, "v8::PrimitiveArray::New",
+                  "length must be equal or greater than zero");
+  i::Handle<i::FixedArray> array = isolate->factory()->NewFixedArray(length);
+  return ToApiHandle<PrimitiveArray>(array);
+}
+
+int PrimitiveArray::Length() const {
+  i::Handle<i::FixedArray> array = Utils::OpenHandle(this);
+  i::Isolate* isolate = array->GetIsolate();
+  ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
+  return array->length();
+}
+
+void PrimitiveArray::Set(int index, Local<Primitive> item) {
+  i::Handle<i::FixedArray> array = Utils::OpenHandle(this);
+  i::Isolate* isolate = array->GetIsolate();
+  ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
+  Utils::ApiCheck(index >= 0 && index < array->length(),
+                  "v8::PrimitiveArray::Set",
+                  "index must be greater than or equal to 0 and less than the "
+                  "array length");
+  i::Handle<i::Object> i_item = Utils::OpenHandle(*item);
+  array->set(index, *i_item);
+}
+
+Local<Primitive> PrimitiveArray::Get(int index) {
+  i::Handle<i::FixedArray> array = Utils::OpenHandle(this);
+  i::Isolate* isolate = array->GetIsolate();
+  ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
+  Utils::ApiCheck(index >= 0 && index < array->length(),
+                  "v8::PrimitiveArray::Get",
+                  "index must be greater than or equal to 0 and less than the "
+                  "array length");
+  i::Handle<i::Object> i_item(array->get(index), isolate);
+  return ToApiHandle<Primitive>(i_item);
+}
 
 Module::Status Module::GetStatus() const {
   i::Handle<i::Module> self = Utils::OpenHandle(this);
@@ -2225,11 +2287,18 @@ MaybeLocal<UnboundScript> ScriptCompiler::CompileUnboundInternal(
     TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8.compile"), "V8.CompileScript");
     i::Handle<i::Object> name_obj;
     i::Handle<i::Object> source_map_url;
+    // Backed out for ABI compatibility with V8 6.2
+    // i::Handle<i::FixedArray> host_defined_options =
+    //     isolate->factory()->empty_fixed_array();
     int line_offset = 0;
     int column_offset = 0;
     if (!source->resource_name.IsEmpty()) {
       name_obj = Utils::OpenHandle(*(source->resource_name));
     }
+    // Backed out for ABI compatibility with V8 6.2
+    // if (!source->host_defined_options.IsEmpty()) {
+    //   host_defined_options = Utils::OpenHandle(*(source->host_defined_options));
+    // }
     if (!source->resource_line_offset.IsEmpty()) {
       line_offset = static_cast<int>(source->resource_line_offset->Value());
     }
@@ -2243,7 +2312,7 @@ MaybeLocal<UnboundScript> ScriptCompiler::CompileUnboundInternal(
     result = i::Compiler::GetSharedFunctionInfoForScript(
         str, name_obj, line_offset, column_offset, source->resource_options,
         source_map_url, isolate->native_context(), NULL, &script_data, options,
-        i::NOT_NATIVES_CODE);
+        i::NOT_NATIVES_CODE /*, host_defined_options */);
     has_pending_exception = result.is_null();
     if (has_pending_exception && script_data != NULL) {
       // This case won't happen during normal operation; we have compiled
@@ -2508,6 +2577,10 @@ MaybeLocal<Script> ScriptCompiler::Compile(Local<Context> context,
   if (!origin.ResourceName().IsEmpty()) {
     script->set_name(*Utils::OpenHandle(*(origin.ResourceName())));
   }
+  // if (!origin.HostDefinedOptions().IsEmpty()) {
+  //   script->set_host_defined_options(
+  //       *Utils::OpenHandle(*(origin.HostDefinedOptions())));
+  // }
   if (!origin.ResourceLineOffset().IsEmpty()) {
     script->set_line_offset(
         static_cast<int>(origin.ResourceLineOffset()->Value()));
@@ -9871,7 +9944,9 @@ MaybeLocal<UnboundScript> debug::CompileInspectorScript(Isolate* v8_isolate,
         i::Handle<i::Object>(), isolate->native_context(), NULL, &script_data,
         ScriptCompiler::kNoCompileOptions,
         i::FLAG_expose_inspector_scripts ? i::NOT_NATIVES_CODE
-                                         : i::INSPECTOR_CODE);
+                                         : i::INSPECTOR_CODE /*,
+        // Backed out for ABI compatibility with V8 6.2
+        i::Handle<i::FixedArray>() */);
     has_pending_exception = result.is_null();
     RETURN_ON_FAILED_EXECUTION(UnboundScript);
   }

deps/v8/src/api.h

@@ -111,7 +111,10 @@ class RegisteredExtension {
   V(NativeWeakMap, JSWeakMap)                  \
   V(debug::GeneratorObject, JSGeneratorObject) \
   V(debug::Script, Script)                     \
-  V(Promise, JSPromise)
+  V(Promise, JSPromise)                        \
+  V(Primitive, Object)                         \
+  V(PrimitiveArray, FixedArray)                \
+  V(ScriptOrModule, Script)
 
 class Utils {
  public:
@@ -209,6 +212,12 @@ class Utils {
       v8::internal::Handle<v8::internal::JSWeakMap> obj);
   static inline Local<Function> CallableToLocal(
       v8::internal::Handle<v8::internal::JSReceiver> obj);
+  static inline Local<Primitive> ToLocalPrimitive(
+      v8::internal::Handle<v8::internal::Object> obj);
+  static inline Local<PrimitiveArray> ToLocal(
+      v8::internal::Handle<v8::internal::FixedArray> obj);
+  static inline Local<ScriptOrModule> ScriptOrModuleToLocal(
+      v8::internal::Handle<v8::internal::Script> obj);
 
 #define DECLARE_OPEN_HANDLE(From, To) \
   static inline v8::internal::Handle<v8::internal::To> \
@@ -325,6 +334,9 @@ MAKE_TO_LOCAL(Uint32ToLocal, Object, Uint32)
 MAKE_TO_LOCAL(ExternalToLocal, JSObject, External)
 MAKE_TO_LOCAL(NativeWeakMapToLocal, JSWeakMap, NativeWeakMap)
 MAKE_TO_LOCAL(CallableToLocal, JSReceiver, Function)
+MAKE_TO_LOCAL(ToLocalPrimitive, Object, Primitive)
+MAKE_TO_LOCAL(ToLocal, FixedArray, PrimitiveArray)
+MAKE_TO_LOCAL(ScriptOrModuleToLocal, Script, ScriptOrModule)
 
 #undef MAKE_TO_LOCAL_TYPED_ARRAY
 #undef MAKE_TO_LOCAL

deps/v8/src/bootstrapper.cc

@@ -3540,6 +3540,8 @@ bool Bootstrapper::CompileNative(Isolate* isolate, Vector<const char> name,
       Compiler::GetSharedFunctionInfoForScript(
           source, script_name, 0, 0, ScriptOriginOptions(), Handle<Object>(),
           context, NULL, NULL, ScriptCompiler::kNoCompileOptions, natives_flag);
+          // Backed out for ABI compatibility with V8 6.2
+          // Handle<FixedArray>());
   if (function_info.is_null()) return false;
 
   DCHECK(context->IsNativeContext());
@@ -3602,6 +3604,8 @@ bool Genesis::CompileExtension(Isolate* isolate, v8::Extension* extension) {
     function_info = Compiler::GetSharedFunctionInfoForScript(
         source, script_name, 0, 0, ScriptOriginOptions(), Handle<Object>(),
         context, extension, NULL, ScriptCompiler::kNoCompileOptions,
+        // Backed out for ABI compatibility with V8 6.2
+        // EXTENSION_CODE, Handle<FixedArray>());
         EXTENSION_CODE);
     if (function_info.is_null()) return false;
     cache->Add(name, function_info);

deps/v8/src/compiler.cc

@@ -1192,6 +1192,9 @@ Handle<SharedFunctionInfo> Compiler::GetSharedFunctionInfoForScript(
     int column_offset, ScriptOriginOptions resource_options,
     Handle<Object> source_map_url, Handle<Context> context,
     v8::Extension* extension, ScriptData** cached_data,
+    // Backed out for ABI compatibility with V8 6.2
+    // ScriptCompiler::CompileOptions compile_options, NativesFlag natives,
+    // Handle<FixedArray> host_defined_options) {
     ScriptCompiler::CompileOptions compile_options, NativesFlag natives) {
   Isolate* isolate = source->GetIsolate();
   if (compile_options == ScriptCompiler::kNoCompileOptions) {
@@ -1288,6 +1291,10 @@ Handle<SharedFunctionInfo> Compiler::GetSharedFunctionInfoForScript(
     if (!source_map_url.is_null()) {
       script->set_source_mapping_url(*source_map_url);
     }
+    // Backed out for ABI compatibility with V8 6.2
+    // if (!host_defined_options.is_null()) {
+    //   script->set_host_defined_options(*host_defined_options);
+    // }
 
     // Compile the function and add it to the cache.
     ParseInfo parse_info(script);

deps/v8/src/compiler.h

@@ -114,6 +114,8 @@ class V8_EXPORT_PRIVATE Compiler : public AllStatic {
       v8::Extension* extension, ScriptData** cached_data,
       ScriptCompiler::CompileOptions compile_options,
       NativesFlag is_natives_code);
+      // Backed out for ABI compatibility with V8 6.2
+      // NativesFlag is_natives_code, Handle<FixedArray> host_defined_options);
 
   // Create a shared function info object for a Script that has already been
   // parsed while the script was being loaded from a streamed source.