Basic multi-module support

chrome/common/extensions/manifest_handlers/shared_module_info.h

+// Copyright (c) 2013 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 CHROME_COMMON_EXTENSIONS_MANIFEST_HANDLERS_SHARED_MODULE_INFO_H_
+#define CHROME_COMMON_EXTENSIONS_MANIFEST_HANDLERS_SHARED_MODULE_INFO_H_
+
+#include <string>
+#include <vector>
+
+#include "base/values.h"
+#include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/manifest_handler.h"
+
+namespace extensions {
+
+class SharedModuleInfo : public Extension::ManifestData {
+ public:
+  SharedModuleInfo();
+  virtual ~SharedModuleInfo();
+
+  bool Parse(const Extension* extension, string16* error);
+
+  struct ImportInfo {
+    std::string extension_id;
+    std::string minimum_version;
+  };
+
+  // Utility functions.
+  static void ParseImportedPath(const std::string& path,
+                                std::string* import_id,
+                                std::string* import_relative_path);
+  static bool IsImportedPath(const std::string& path);
+
+  // Functions relating to exporting resources.
+  static bool IsSharedModule(const Extension* extension);
+  static bool IsExportAllowed(const Extension* extension,
+                              const std::string& relative_path);
+
+  // Functions relating to importing resources.
+  static bool ImportsExtensionById(const Extension* extension,
+                                   const std::string& other_id);
+  static bool ImportsModules(const Extension* extension);
+  static const std::vector<ImportInfo>& GetImports(const Extension* extension);
+
+ private:
+  // This extension exports the following resources to other extensions.
+  URLPatternSet exported_set_;
+
+  // Optional list of module imports of other extensions.
+  std::vector<ImportInfo> imports_;
+};
+
+// Parses all import/export keys in the manifest.
+class SharedModuleHandler : public ManifestHandler {
+ public:
+  SharedModuleHandler();
+  virtual ~SharedModuleHandler();
+
+  virtual bool Parse(Extension* extension, string16* error) OVERRIDE;
+  virtual bool Validate(const Extension* extension,
+                        std::string* error,
+                        std::vector<InstallWarning>* warnings) const OVERRIDE;
+
+ private:
+  virtual const std::vector<std::string> Keys() const OVERRIDE;
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_COMMON_EXTENSIONS_MANIFEST_HANDLERS_SHARED_MODULE_INFO_H_