Make the implementation .cc files go away, instead have the authors give us a...

chrome/common/indexed_db_messages.h

 // Copyright (c) 2010 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_INDEXED_DB_MESSAGES_H_
 #define CHROME_COMMON_INDEXED_DB_MESSAGES_H_
-#pragma once
+// Partially-guarded file, included multiple times, hence no #pragma once.
 
 #include "chrome/common/indexed_db_key.h"
 #include "chrome/common/indexed_db_param_traits.h"
 #include "chrome/common/serialized_script_value.h"
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_param_traits.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebExceptionCode.h"
 
+#endif  // CHROME_COMMON_INDEXED_DB_MESSAGES_H_
+
+#undef IPC_MESSAGE_START
 #define IPC_MESSAGE_START IndexedDBMsgStart
 
+// Argument structures used in messages
+
 // Used to open an indexed database.
-struct IndexedDBHostMsg_FactoryOpen_Params {
-  IndexedDBHostMsg_FactoryOpen_Params();
-  ~IndexedDBHostMsg_FactoryOpen_Params();
-
-  // The routing ID of the view initiating the open.
-  int32 routing_id;
-
-  // The response should have this id.
-  int32 response_id;
-
-  // The origin doing the initiating.
-  string16 origin;
-
-  // The name of the database.
-  string16 name;
-
-  // The maximum size of the database.
-  uint64 maximum_size;
-};
+#undef IPC_STRUCT_NAME
+#define IPC_STRUCT_NAME IndexedDBHostMsg_FactoryOpen_Params
+// The routing ID of the view initiating the open.
+IPC_STRUCT_FIRST(int32, routing_id, INIT)
+// The response should have this id.
+IPC_STRUCT_NEXT(int32, response_id, INIT)
+// The origin doing the initiating.
+IPC_STRUCT_NEXT(string16, origin, INIT)
+// The name of the database.
+IPC_STRUCT_NEXT(string16, name, INIT)
+// The maximum size of the database.
+IPC_STRUCT_LAST(uint64, maximum_size, INIT)
 
 // Used to create an object store.
-struct IndexedDBHostMsg_DatabaseCreateObjectStore_Params {
-  IndexedDBHostMsg_DatabaseCreateObjectStore_Params();
-  ~IndexedDBHostMsg_DatabaseCreateObjectStore_Params();
-
-  // The name of the object store.
-  string16 name;
-
-  // The keyPath of the object store.
-  NullableString16 key_path;
-
-  // Whether the object store created should have a key generator.
-  bool auto_increment;
-
-  // The transaction this is associated with.
-  int32 transaction_id;
-
-  // The database the object store belongs to.
-  int32 idb_database_id;
-};
+#undef IPC_STRUCT_NAME
+#define IPC_STRUCT_NAME IndexedDBHostMsg_DatabaseCreateObjectStore_Params
+// The name of the object store.
+IPC_STRUCT_FIRST(string16, name, INIT)
+// The keyPath of the object store.
+IPC_STRUCT_NEXT(NullableString16, key_path, INIT)
+// Whether the object store created should have a key generator.
+IPC_STRUCT_NEXT(bool, auto_increment, INIT)
+// The transaction this is associated with.
+IPC_STRUCT_NEXT(int32, transaction_id, INIT)
+// The database the object store belongs to.
+IPC_STRUCT_LAST(int32, idb_database_id, INIT)
 
 // Used to open both cursors and object cursors in IndexedDB.
-struct IndexedDBHostMsg_IndexOpenCursor_Params {
-  IndexedDBHostMsg_IndexOpenCursor_Params();
-  ~IndexedDBHostMsg_IndexOpenCursor_Params();
-
-  // The response should have this id.
-  int32 response_id;
-
-  // The serialized lower key.
-  IndexedDBKey lower_key;
-
-  // The serialized upper key.
-  IndexedDBKey upper_key;
-
-  // Is the lower bound open?
-  bool lower_open;
-
-  // Is the upper bound open?
-  bool upper_open;
-
-  // The direction of this cursor.
-  int32 direction;
-
-  // The index the index belongs to.
-  int32 idb_index_id;
-
-  // The transaction this request belongs to.
-  int transaction_id;
-};
+#undef IPC_STRUCT_NAME
+#define IPC_STRUCT_NAME IndexedDBHostMsg_IndexOpenCursor_Params

[darin (slow to review), 2011/02/01 22:20:45]

it might be nice to use indentation here to improve readability:

IPC_STRUCT_BEGIN(IndexedDBHostMsg_IndexOpenCursor_Params)
  IPC_STRUCT_MEMBER(type, name, flag)
  ...
IPC_STRUCT_END()

bonus points if you can eliminate the IPC_STRUCT_NAME define in favor of passing
the name as a parameter to IPC_STRUCT_BEGIN as i have shown above.  (i haven't
studied your code to see if that is possible.)

+// The response should have this id.
+IPC_STRUCT_FIRST(int32, response_id, INIT)
+// The serialized lower key.
+IPC_STRUCT_NEXT(IndexedDBKey, lower_key, NOINIT)
+// The serialized upper key.
+IPC_STRUCT_NEXT(IndexedDBKey, upper_key, NOINIT)
+// Is the lower bound open?
+IPC_STRUCT_NEXT(bool, lower_open, INIT)
+// Is the upper bound open?
+IPC_STRUCT_NEXT(bool, upper_open, INIT)
+// The direction of this cursor.
+IPC_STRUCT_NEXT(int32, direction, INIT)
+// The index the index belongs to.
+IPC_STRUCT_NEXT(int32, idb_index_id, INIT)
+// The transaction this request belongs to.
+IPC_STRUCT_LAST(int, transaction_id, INIT)
 
 // Used to set a value in an object store.
-struct IndexedDBHostMsg_ObjectStorePut_Params {
-  IndexedDBHostMsg_ObjectStorePut_Params();
-  ~IndexedDBHostMsg_ObjectStorePut_Params();
-
-  // The object store's id.
-  int32 idb_object_store_id;
-
-  // The id any response should contain.
-  int32 response_id;
-
-  // The value to set.
-  SerializedScriptValue serialized_value;
-
-  // The key to set it on (may not be "valid"/set in some cases).
-  IndexedDBKey key;
-
-  // If it already exists, don't update (just return an error).
-  bool add_only;
-
-  // The transaction it's associated with.
-  int transaction_id;
-};
+#undef IPC_STRUCT_NAME
+#define IPC_STRUCT_NAME IndexedDBHostMsg_ObjectStorePut_Params
+// The object store's id.
+IPC_STRUCT_FIRST(int32, idb_object_store_id, INIT)
+// The id any response should contain.
+IPC_STRUCT_NEXT(int32, response_id, INIT)
+// The value to set.
+IPC_STRUCT_NEXT(SerializedScriptValue, serialized_value, NOINIT)
+// The key to set it on (may not be "valid"/set in some cases).
+IPC_STRUCT_NEXT(IndexedDBKey, key, NOINIT)
+// If it already exists, don't update (just return an error).
+IPC_STRUCT_NEXT(bool, add_only, INIT)
+// The transaction it's associated with.
+IPC_STRUCT_LAST(int, transaction_id, INIT)
 
 // Used to create an index.
-struct IndexedDBHostMsg_ObjectStoreCreateIndex_Params {
-  IndexedDBHostMsg_ObjectStoreCreateIndex_Params();
-  ~IndexedDBHostMsg_ObjectStoreCreateIndex_Params();
-
-  // The name of the index.
-  string16 name;
-
-  // The keyPath of the index.
-  NullableString16 key_path;
-
-  // Whether the index created has unique keys.
-  bool unique;
-
-  // The transaction this is associated with.
-  int32 transaction_id;
-
-  // The object store the index belongs to.
-  int32 idb_object_store_id;
-};
+#undef IPC_STRUCT_NAME
+#define IPC_STRUCT_NAME IndexedDBHostMsg_ObjectStoreCreateIndex_Params
+// The name of the index.
+IPC_STRUCT_FIRST(string16, name, INIT)
+// The keyPath of the index.
+IPC_STRUCT_NEXT(NullableString16, key_path, INIT)
+// Whether the index created has unique keys.
+IPC_STRUCT_NEXT(bool, unique, INIT)
+// The transaction this is associated with.
+IPC_STRUCT_NEXT(int32, transaction_id, INIT)
+// The object store the index belongs to.
+IPC_STRUCT_LAST(int32, idb_object_store_id, INIT)
 
 // Used to open an IndexedDB cursor.
-struct IndexedDBHostMsg_ObjectStoreOpenCursor_Params {
-  IndexedDBHostMsg_ObjectStoreOpenCursor_Params();
-  ~IndexedDBHostMsg_ObjectStoreOpenCursor_Params();
-
-  // The response should have this id.
-  int32 response_id;
-
-  // The serialized lower key.
-  IndexedDBKey lower_key;
-
-  // The serialized upper key.
-  IndexedDBKey upper_key;
-
-  // Is the lower bound open?
-  bool lower_open;
-
-  // Is the upper bound open?
-  bool upper_open;
-
-  // The direction of this cursor.
-  int32 direction;
-
-  // The object store the cursor belongs to.
-  int32 idb_object_store_id;
-
-  // The transaction this request belongs to.
-  int transaction_id;
-};
-
-namespace IPC {
-template <>
-struct ParamTraits<IndexedDBHostMsg_FactoryOpen_Params> {
-  typedef IndexedDBHostMsg_FactoryOpen_Params param_type;
-  static void Write(Message* m, const param_type& p);
-  static bool Read(const Message* m, void** iter, param_type* p);
-  static void Log(const param_type& p, std::string* l);
-};
-
-template <>
-struct ParamTraits<IndexedDBHostMsg_DatabaseCreateObjectStore_Params> {
-  typedef IndexedDBHostMsg_DatabaseCreateObjectStore_Params param_type;
-  static void Write(Message* m, const param_type& p);
-  static bool Read(const Message* m, void** iter, param_type* p);
-  static void Log(const param_type& p, std::string* l);
-};
-
-template <>
-struct ParamTraits<IndexedDBHostMsg_IndexOpenCursor_Params> {
-  typedef IndexedDBHostMsg_IndexOpenCursor_Params param_type;
-  static void Write(Message* m, const param_type& p);
-  static bool Read(const Message* m, void** iter, param_type* p);
-  static void Log(const param_type& p, std::string* l);
-};
-
-template <>
-struct ParamTraits<IndexedDBHostMsg_ObjectStorePut_Params> {
-  typedef IndexedDBHostMsg_ObjectStorePut_Params param_type;
-  static void Write(Message* m, const param_type& p);
-  static bool Read(const Message* m, void** iter, param_type* p);
-  static void Log(const param_type& p, std::string* l);
-};
-
-template <>
-struct ParamTraits<IndexedDBHostMsg_ObjectStoreCreateIndex_Params> {
-  typedef IndexedDBHostMsg_ObjectStoreCreateIndex_Params param_type;
-  static void Write(Message* m, const param_type& p);
-  static bool Read(const Message* m, void** iter, param_type* p);
-  static void Log(const param_type& p, std::string* l);
-};
-
-template <>
-struct ParamTraits<IndexedDBHostMsg_ObjectStoreOpenCursor_Params> {
-  typedef IndexedDBHostMsg_ObjectStoreOpenCursor_Params param_type;
-  static void Write(Message* m, const param_type& p);
-  static bool Read(const Message* m, void** iter, param_type* p);
-  static void Log(const param_type& p, std::string* l);
-};
-
-}  // namespace IPC
+#undef IPC_STRUCT_NAME
+#define IPC_STRUCT_NAME IndexedDBHostMsg_ObjectStoreOpenCursor_Params
+// The response should have this id.
+IPC_STRUCT_FIRST(int32, response_id, INIT)
+// The serialized lower key.
+IPC_STRUCT_NEXT(IndexedDBKey, lower_key, NOINIT)
+// The serialized upper key.
+IPC_STRUCT_NEXT(IndexedDBKey, upper_key, NOINIT)
+// Is the lower bound open?
+IPC_STRUCT_NEXT(bool, lower_open, INIT)
+// Is the upper bound open?
+IPC_STRUCT_NEXT(bool, upper_open, INIT)
+// The direction of this cursor.
+IPC_STRUCT_NEXT(int32, direction, INIT)
+// The object store the cursor belongs to.
+IPC_STRUCT_NEXT(int32, idb_object_store_id, INIT)
+// The transaction this request belongs to.
+IPC_STRUCT_LAST(int, transaction_id, INIT)
 
 // Indexed DB messages sent from the browser to the renderer.
 
 // IDBCallback message handlers.
 IPC_MESSAGE_CONTROL2(IndexedDBMsg_CallbacksSuccessIDBCursor,
                      int32 /* response_id */,
                      int32 /* cursor_id */)
 IPC_MESSAGE_CONTROL2(IndexedDBMsg_CallbacksSuccessIDBDatabase,
                      int32 /* response_id */,
                      int32 /* idb_database_id */)
@@ skipping 260 matching lines @@
                      int32 /* idb_transaction_id */)
 
 // IDBTransaction::DidCompleteTaskEvents() message.
 IPC_MESSAGE_CONTROL1(IndexedDBHostMsg_TransactionDidCompleteTaskEvents,
                      int32 /* idb_transaction_id */)
 
 // WebIDBTransaction::~WebIDBTransaction() message.
 IPC_MESSAGE_CONTROL1(IndexedDBHostMsg_TransactionDestroyed,
                      int32 /* idb_transaction_id */)
 
-#endif  // CHROME_COMMON_INDEXED_DB_MESSAGES_H_