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- // 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 <map>
- #include <memory>
- #include <string>
- #include <vector>
- #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<NativeHandler> AsNativeHandler();
- // Returns a v8::Array with all the schemas for the APIs in |apis|.
- v8::Local<v8::Array> GetSchemas(const std::vector<std::string>& apis);
- // Returns a v8::Object for the schema for |api|, possibly from the cache.
- v8::Local<v8::Object> 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<v8::Context> GetOrCreateContext(v8::Isolate* isolate);
- // Cache of schemas. Created lazily by GetOrCreateContext.
- typedef v8::StdGlobalValueMap<std::string, v8::Object> SchemaCache;
- std::unique_ptr<SchemaCache> schema_cache_;
- // Single per-instance gin::ContextHolder to create v8::Values.
- // Created lazily via GetOrCreateContext.
- std::unique_ptr<gin::ContextHolder> context_holder_;
- };
- } // namespace extensions
- #endif // EXTENSIONS_RENDERER_V8_SCHEMA_REGISTRY_H_
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