验证每个函数是否以注释开头并验证此注释是否包含保留字 words.comments 包含保留字

Question

我检查了每个函数 Function() 是否以输入文件流中的注释开头。这就像：

     SKIP : {   " " | "\t" | "\n" | "\r" }

            /* COMMENTS */ 

SPECIAL_TOKEN : {   <SINGLE_LINE_COMMENT: "--" (~["\n","\r"])* ("\n"|"\r"|"\r\n")?> } 


     void  Function : {
                Token firstToken, id;} {
                firstToken=<start> id=<id> "("  ")"
                .........

                <end>
                { if( firstToken.specialToken == null
                   || firstToken.specialToken.kind != COMMENT ) 
                       System.out.println("Function " +id.image+
                                          " is not preceded by a comment!" ) ;
                } }

所以，我想验证一下这条评论是否包含保留字

提前致谢。

Answer 1

如果你只是想知道评论是否包含给定的词，你不妨使用Java的字符串搜索机制。假设您想知道函数定义之前的注释中的单词 "bandersnatch" 是否为

   void  Function() : {
        Token firstToken, id;}
   {
        firstToken=<start> id=<id> "("  ")"
        .........
        <end>
        { if( firstToken.specialToken == null
           || firstToken.specialToken.kind != COMMENT ) 
               System.out.println("Function " +id.image+
                                  " is not preceded by a comment!" ) ;
          else {
              String comment = firstToken.specialToken.image ;
              boolean hasBandersnatch = comment.indexOf("bandersnatch") != -1 ;                   if( ! hasBandersnatch ) 
                  System.out.println("Function " +id.image+
                                  " is preceded by a comment that does not contain 'bandersnatch'!" ) ; }
        }
   }

如果您希望搜索不区分大小写，请更改 comment 的初始化。

String comment = firstToken.specialToken.image.toLower() ;

验证每个函数是否以注释开头并验证此注释是否包含保留字 words.comments 包含保留字

verify if each function started with a comment and verify if this comments contains reserved words.comments contains reserved words

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