// Copyright 2014 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef EXTENSIONS_RENDERER_V8_SCHEMA_REGISTRY_H_ #define EXTENSIONS_RENDERER_V8_SCHEMA_REGISTRY_H_ #include #include #include #include #include "gin/public/context_holder.h" #include "v8/include/v8-forward.h" #include "v8/include/v8-util.h" namespace extensions { class NativeHandler; // A registry for the v8::Value representations of extension API schemas. // In a way, the v8 counterpart to ExtensionAPI. class V8SchemaRegistry { public: V8SchemaRegistry(); V8SchemaRegistry(const V8SchemaRegistry&) = delete; V8SchemaRegistry& operator=(const V8SchemaRegistry&) = delete; ~V8SchemaRegistry(); // Creates a NativeHandler wrapper |this|. Supports GetSchema. std::unique_ptr AsNativeHandler(); // Returns a v8::Array with all the schemas for the APIs in |apis|. v8::Local GetSchemas(const std::vector& apis); // Returns a v8::Object for the schema for |api|, possibly from the cache. v8::Local GetSchema(const std::string& api); private: // Gets the separate context that backs the registry, creating a new one if // if necessary. Will also initialize schema_cache_. v8::Local GetOrCreateContext(v8::Isolate* isolate); // Cache of schemas. Created lazily by GetOrCreateContext. typedef v8::StdGlobalValueMap SchemaCache; std::unique_ptr schema_cache_; // Single per-instance gin::ContextHolder to create v8::Values. // Created lazily via GetOrCreateContext. std::unique_ptr context_holder_; }; } // namespace extensions #endif // EXTENSIONS_RENDERER_V8_SCHEMA_REGISTRY_H_