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      1 /*
      2  * Copyright (C) 2015 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 AAPT_JAVA_ANNOTATIONPROCESSOR_H
     18 #define AAPT_JAVA_ANNOTATIONPROCESSOR_H
     19 
     20 #include <sstream>
     21 #include <string>
     22 
     23 #include "androidfw/StringPiece.h"
     24 
     25 #include "text/Printer.h"
     26 
     27 namespace aapt {
     28 
     29 // Builds a JavaDoc comment from a set of XML comments.
     30 // This will also look for instances of @SystemApi and convert them to
     31 // actual Java annotations.
     32 //
     33 // Example:
     34 //
     35 // Input XML:
     36 //
     37 // <!-- This is meant to be hidden because
     38 //      It is system api. Also it is @deprecated
     39 //      @SystemApi
     40 //      -->
     41 //
     42 // Output JavaDoc:
     43 //
     44 //  /**
     45 //   * This is meant to be hidden because
     46 //   * It is system api. Also it is @deprecated
     47 //   */
     48 //
     49 // Output Annotations:
     50 //
     51 // @Deprecated
     52 // @android.annotation.SystemApi
     53 class AnnotationProcessor {
     54  public:
     55   // Extracts the first sentence of a comment. The algorithm selects the substring starting from
     56   // the beginning of the string, and ending at the first '.' character that is followed by a
     57   // whitespace character. If these requirements are not met, the whole string is returned.
     58   static android::StringPiece ExtractFirstSentence(const android::StringPiece& comment);
     59 
     60   // Adds more comments. Resources can have value definitions for various configurations, and
     61   // each of the definitions may have comments that need to be processed.
     62   void AppendComment(const android::StringPiece& comment);
     63 
     64   void AppendNewLine();
     65 
     66   // Writes the comments and annotations to the Printer.
     67   void Print(text::Printer* printer) const;
     68 
     69  private:
     70   std::stringstream comment_;
     71   std::stringstream mAnnotations;
     72   bool has_comments_ = false;
     73   uint32_t annotation_bit_mask_ = 0;
     74 
     75   void AppendCommentLine(std::string line);
     76 };
     77 
     78 }  // namespace aapt
     79 
     80 #endif /* AAPT_JAVA_ANNOTATIONPROCESSOR_H */
     81