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1 /*
2  * Copyright 2010-2012, 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 BCC_SOURCE_H
18 #define BCC_SOURCE_H
19 
20 #include <string>
21 
22 namespace llvm {
23   class Module;
24 }
25 
26 namespace bcc {
27 
28 class BCCContext;
29 
30 class Source {
31 private:
32   const std::string mName; // A unique name
33   BCCContext &mContext;
34   llvm::Module *mModule;
35 
36   // If true, destructor won't destroy the mModule.
37   bool mNoDelete;
38 
39 private:
40   Source(const char* name, BCCContext &pContext, llvm::Module &pModule,
41          bool pNoDelete = false);
42 
43 public:
44   static Source *CreateFromBuffer(BCCContext &pContext,
45                                   const char *pName,
46                                   const char *pBitcode,
47                                   size_t pBitcodeSize);
48 
49   static Source *CreateFromFile(BCCContext &pContext,
50                                 const std::string &pPath);
51 
52   // Create a Source object from an existing module. If pNoDelete
53   // is true, destructor won't call delete on the given module.
54   static Source *CreateFromModule(BCCContext &pContext,
55                                   const char* name,
56                                   llvm::Module &pModule,
57                                   bool pNoDelete = false);
58 
59   static Source *CreateEmpty(BCCContext &pContext, const std::string &pName);
60 
getName()61   const std::string& getName() const { return mName; }
62 
63   // Merge the current source with pSource. pSource
64   // will be destroyed after successfully merged. Return false on error.
65   bool merge(Source &pSource);
66 
getContext()67   inline BCCContext &getContext()
68   { return mContext; }
getContext()69   inline const BCCContext &getContext() const
70   { return mContext; }
71 
72   void setModule(llvm::Module *pModule);
73 
getModule()74   inline llvm::Module &getModule()
75   { return *mModule;  }
getModule()76   inline const llvm::Module &getModule() const
77   { return *mModule;  }
78 
79   // Get the "identifier" of the bitcode. This will return the value of pName
80   // when it's created using CreateFromBuffer and pPath if CreateFromFile().
81   const std::string &getIdentifier() const;
82 
83   void addBuildChecksumMetadata(const char *) const;
84 
85   ~Source();
86 };
87 
88 } // namespace bcc
89 
90 #endif // BCC_SOURCE_H
91