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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 AST_H_
     18 #define AST_H_
     19 
     20 #include "Scope.h"
     21 #include "Expression.h"
     22 
     23 #include <hidl-util/Formatter.h>
     24 #include <android-base/macros.h>
     25 #include <android-base/logging.h>
     26 #include <string>
     27 #include <vector>
     28 #include <utils/Errors.h>
     29 
     30 namespace android {
     31 
     32 struct Include;
     33 struct Define;
     34 struct CompositeDeclaration;
     35 struct Declaration;
     36 
     37 struct AST {
     38     AST(const std::string &path,
     39         const std::string &outputDir,
     40         const std::string &package,
     41         bool isOpenGl);
     42     ~AST();
     43 
     44     void *scanner();
     45     void setScanner(void *scanner);
     46 
     47     bool isOpenGl() const;
     48 
     49     const std::string &getFilename() const;
     50 
     51     void setDeclarations(std::vector<Declaration *> *declarations);
     52     void setIncludes(std::vector<Include *> *includes);
     53 
     54     Expression *getExpression() const;
     55     void setExpression(Expression *expression);
     56 
     57     status_t generateCode() const;
     58 
     59     void processContents();
     60 
     61     const Scope<Define *> &getDefinesScope() const;
     62     Scope<Define *> &getDefinesScope();
     63 
     64 private:
     65     void * mScanner = NULL;
     66     std::string mPath;
     67     std::string mOutputDir;
     68     std::string mPackage;
     69 
     70     bool mIsOpenGl;
     71 
     72     Expression* mExpression = NULL;
     73 
     74     std::vector<Declaration *> *mDeclarations = NULL;
     75     std::vector<CompositeDeclaration *> *mInterfaces = NULL;
     76     std::vector<Include *> *mIncludes = NULL;
     77 
     78     Scope<Define *> mDefinesScope;
     79 
     80     const std::string getFileDir() const;
     81 
     82     status_t generateFile(CompositeDeclaration* declaration) const;
     83     status_t generateTypesFile() const;
     84 
     85     void generateIncludes(Formatter &out) const;
     86     void generatePackageLine(Formatter &out) const;
     87 
     88     void isolateInterfaces();
     89     void isolateGlobalInterface();
     90     void isolateIncludes();
     91     void isolateConstants(Expression::Type ofType);
     92 
     93     DISALLOW_COPY_AND_ASSIGN(AST);
     94 };
     95 
     96 }  // namespace android
     97 
     98 #endif  // AST_H_
     99