OLD | NEW |
| (Empty) |
1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef MOJO_PUBLIC_CPP_BINDINGS_MESSAGE_VALIDATOR_H_ | |
6 #define MOJO_PUBLIC_CPP_BINDINGS_MESSAGE_VALIDATOR_H_ | |
7 | |
8 #include <string> | |
9 #include <vector> | |
10 | |
11 #include "mojo/public/cpp/bindings/lib/validation_errors.h" | |
12 #include "mojo/public/cpp/bindings/message.h" | |
13 #include "mojo/public/cpp/system/macros.h" | |
14 | |
15 namespace mojo { | |
16 namespace internal { | |
17 | |
18 // This class is the base class for message validators. Subclasses should | |
19 // implement the pure virtual method Validate() to validate messages. | |
20 class MessageValidator { | |
21 public: | |
22 virtual ~MessageValidator() {} | |
23 // Validates the message and returns ValidationError::NONE if valid. | |
24 // Otherwise returns a different value, and sets the |err| string if it is not | |
25 // null. | |
26 virtual ValidationError Validate(const Message* message, | |
27 std::string* err) = 0; | |
28 }; | |
29 | |
30 // A message validator that does nothing, and always returns a non-error. | |
31 class PassThroughValidator final : public MessageValidator { | |
32 public: | |
33 ValidationError Validate(const Message* message, std::string* err) override; | |
34 }; | |
35 | |
36 using MessageValidatorList = std::vector<std::unique_ptr<MessageValidator>>; | |
37 | |
38 // Iterates through |validators| and tries to validate the given |message| until | |
39 // a validator fails. If a validator fails, a |ValidationError| is returned and | |
40 // the supplied |err| is set if it is not null. |ValidationError::NONE| is | |
41 // returned if the supplied |message| passes all the |validators|. | |
42 ValidationError RunValidatorsOnMessage(const MessageValidatorList& validators, | |
43 const Message* message, | |
44 std::string* err); | |
45 | |
46 } // namespace internal | |
47 } // namespace mojo | |
48 | |
49 #endif // MOJO_PUBLIC_CPP_BINDINGS_MESSAGE_VALIDATOR_H_ | |
OLD | NEW |