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      1 /*
      2  * Copyright (C) 2016 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 TYPE_H_
     18 #define TYPE_H_
     19 
     20 #include "Expression.h"
     21 
     22 #include <android-base/macros.h>
     23 #include <android-base/logging.h>
     24 #include <string>
     25 #include <vector>
     26 #include <map>
     27 
     28 namespace android {
     29 
     30 struct Type {
     31 
     32     struct Qualifier {
     33 
     34         enum Qualification {
     35             NONE = 0,
     36             STRUCT,
     37             UNION,
     38             SIGNED,
     39             UNSIGNED,
     40             VOID,
     41             POINTER,
     42             CONST,
     43             GENERICS,
     44             ID,
     45             ENUM
     46         } qualification;
     47 
     48         union {
     49             std::string id;
     50             Type *generics;
     51         };
     52 
     53         Qualifier(Qualification qualification)
     54         : qualification(qualification) {}
     55         Qualifier(Qualification qualification, std::string id)
     56         : qualification(qualification), id(id) {}
     57         Qualifier(Qualification qualification, Type* generics)
     58         : qualification(qualification), generics(generics) {}
     59 
     60         ~Qualifier() {
     61             if (qualification == GENERICS) {
     62                 delete generics;
     63             }
     64         }
     65     };
     66 
     67     Type(std::vector<Qualifier*> *qualifiers);
     68     ~Type();
     69 
     70     static std::string qualifierText(Qualifier::Qualification qual) {
     71         switch(qual) {
     72             case Qualifier::STRUCT: return "struct";
     73             case Qualifier::UNION: return "union";
     74             case Qualifier::ENUM: return "enum";
     75             case Qualifier::SIGNED: return "signed";
     76             case Qualifier::UNSIGNED: return "unsigned";
     77             case Qualifier::VOID: return "void";
     78             case Qualifier::POINTER: return "*";
     79             case Qualifier::CONST: return "const";
     80             case Qualifier::ID: return "ID";
     81             case Qualifier::NONE: return "";
     82             default: return "/* UNKNOWN TYPE QUALIFIER */";
     83         }
     84     }
     85 
     86     void setArrays(std::vector<Expression *> *arrays);
     87 
     88     const std::string decorateName(const std::string &name) const;
     89 
     90     bool isVoid() const;
     91     bool isHwDevice() const;
     92     std::string removeLastId();
     93 
     94 private:
     95 
     96     static std::map<std::string, std::string> kSignedToUnsignedMap;
     97     static const std::string signedToUnsigned(const std::string &signedType);
     98 
     99     static std::map<std::string, std::string> kCToHidlMap;
    100     static const std::string cToHidlType(const std::string &cType);
    101 
    102     const std::string getHidlType() const;
    103 
    104     const std::string getRawQualifierList() const;
    105     const std::string getSpecialTypeName() const;
    106 
    107     std::vector<Qualifier*> *mQualifiers = NULL;
    108 
    109     /* [ expression ] [ expression ] ... [ expression ] */
    110     std::vector<Expression*> *mArrays = NULL;
    111 
    112     DISALLOW_COPY_AND_ASSIGN(Type);
    113 };
    114 
    115 }  // namespace android
    116 
    117 #endif  // TYPE_H_
    118