1 /*
2  * Copyright (C) 2013 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 ART_COMPILER_SEA_IR_TYPES_TYPES_H_
18 #define ART_COMPILER_SEA_IR_TYPES_TYPES_H_
19 
20 #include "safe_map.h"
21 #include "verifier/reg_type.h"
22 #include "verifier/reg_type_cache.h"
23 
24 namespace sea_ir {
25 
26 // TODO: Replace typedef with an actual class implementation when we have more types.
27 typedef art::verifier::RegType Type;
28 
29 // Stores information about the result type of each instruction.
30 // Note: Main purpose is to encapsulate the map<instruction id, type*>,
31 //       so that we can replace the underlying storage at any time.
32 class TypeData {
33  public:
GetTypeMap()34   art::SafeMap<int, const Type*>* GetTypeMap() {
35     return &type_map_;
36   }
37   // Returns the type associated with instruction with @instruction_id.
FindTypeOf(int instruction_id)38   const Type* FindTypeOf(int instruction_id) {
39     art::SafeMap<int, const Type*>::const_iterator result_it = type_map_.find(instruction_id);
40     if (type_map_.end() != result_it) {
41       return result_it->second;
42     }
43     return NULL;
44   }
45 
46   // Saves the fact that instruction @instruction_id produces a value of type @type.
SetTypeOf(int instruction_id,const Type * type)47   void SetTypeOf(int instruction_id, const Type* type) {
48     type_map_.Overwrite(instruction_id, type);
49   }
50 
51  private:
52   art::SafeMap<int, const Type*> type_map_;
53 };
54 
55 
56 
57 }  // namespace sea_ir
58 #endif  // ART_COMPILER_SEA_IR_TYPES_TYPES_H_
59