1 /*
2  * Copyright 2010, The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *     http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef _FRAMEWORKS_COMPILE_SLANG_SLANG_DIAGNOSTIC_BUFFER_H_  // NOLINT
18 #define _FRAMEWORKS_COMPILE_SLANG_SLANG_DIAGNOSTIC_BUFFER_H_
19 
20 #include <set>
21 #include <string>
22 
23 #include "clang/Basic/Diagnostic.h"
24 
25 #include "llvm/Support/raw_ostream.h"
26 
27 namespace llvm {
28   class raw_string_ostream;
29 }
30 
31 namespace slang {
32 
33 // The diagnostics consumer instance (for reading the processed diagnostics)
34 class DiagnosticBuffer : public clang::DiagnosticConsumer {
35 private:
36   // We keed track of the messages that have been already added to this
37   // diagnostic buffer, to avoid duplicates.  This can happen because for a
38   // given script we'll usually compile for both 32 and 64 bit targets.
39   std::set<std::string> mIncludedMessages;
40   std::string mDiags;
41   std::unique_ptr<llvm::raw_string_ostream> mSOS;
42 
43 public:
44   DiagnosticBuffer();
45   virtual ~DiagnosticBuffer();
46 
47   virtual void HandleDiagnostic(clang::DiagnosticsEngine::Level DiagLevel,
48                                 const clang::Diagnostic &Info) override;
49 
str()50   inline const std::string &str() const {
51     mSOS->flush();
52     return mDiags;
53   }
54 
reset()55   inline void reset() {
56     mIncludedMessages.clear();
57     mSOS.reset();
58     mDiags.clear();
59   }
60 };
61 
62 }  // namespace slang
63 
64 #endif  // _FRAMEWORKS_COMPILE_SLANG_SLANG_DIAGNOSTIC_BUFFER_H_  NOLINT
65