src/edu/uci/eecs/specCompiler/specExtraction/SpecExtractor.java

   1 package edu.uci.eecs.specCompiler.specExtraction;
   2
   3 import java.io.BufferedReader;
   4 import java.io.File;
   5 import java.io.FileNotFoundException;
   6 import java.io.FileReader;
   7 import java.io.IOException;
   8 import java.io.LineNumberReader;
   9 import java.util.ArrayList;
  10
  11 import com.sun.xml.internal.ws.policy.privateutil.PolicyUtils.Text;
  12
  13 /**
  14  * <p>
  15  * This class represents the specification extractor of the specification. The
  16  * main function of this class is to read C/C++11 source files and extract the
  17  * corresponding specification out, and remember its location, including the
  18  * file name and the line number, to help the code generation process.
  19  * </p>
  20  * @author peizhaoo
  21  *
  22  */
  23 public class SpecExtractor {
  24         private ArrayList<SpecConstruct> _constructs;
  25         private StringBuilder _potentialConstruct;
  26         private int _beginLine, _endLine;
  27
  28         SpecExtractor() {
  29                 _constructs = new ArrayList<SpecConstruct>();
  30                 _potentialConstruct = new StringBuilder();
  31         }
  32
  33         /**
  34          * <p>
  35          * Given a list of files, it scans each file and add found SpecConstrcut
  36          * to the _constructs list.
  37          * </p>
  38          * @param files
  39          */
  40         public void extract(File[] files) {
  41                 for (int i = 0; i < files.length; i++)
  42                         extract(files[i]);
  43         }
  44
  45         public void extract(File file) {
  46                 try {
  47                         LineNumberReader reader = new LineNumberReader(new FileReader(file));
  48                         String prevLine = "", curLine, trimedLine;
  49                         StringBuilder specText = new StringBuilder();
  50                         boolean _foundHead = false;
  51                         int specIndex = 0;
  52                         while ((curLine = reader.readLine()) != null) {
  53                                 if (prevLine.endsWith("\\"))
  54                                         continue;
  55                                 trimedLine = trimSpace(curLine);
  56                                 if (!_foundHead) {
  57                                         if (trimedLine.startsWith("/**")) {
  58                                                 _beginLine = reader.getLineNumber();
  59                                                 _foundHead = true;
  60                                                 specText.append("\n");
  61                                                 specText.append(curLine);
  62                                                 if (trimedLine.endsWith("*/")) {
  63                                                         _endLine = reader.getLineNumber();
  64                                                         _foundHead = false;
  65
  66                                                         System.out.println("Spec<" + specIndex + "> Begin: "
  67                                                                         + _beginLine + "  End: " + _endLine);
  68                                                         System.out.println(specText);
  69                                                         specIndex++;
  70                                                 }
  71                                         }
  72                                 } else {
  73                                         specText.append("\n");
  74                                         specText.append(curLine);
  75                                         if (trimedLine.endsWith("*/")) {
  76                                                 _endLine = reader.getLineNumber();
  77                                                 _foundHead = false;
  78
  79                                                 System.out.println("Spec<" + specIndex + "> Begin: "
  80                                                                 + _beginLine + "  End: " + _endLine);
  81                                                 System.out.println(specText);
  82                                                 specIndex++;
  83
  84                                                 specText = new StringBuilder();
  85                                         } else {
  86
  87                                         }
  88                                 }
  89                         }
  90                 } catch (FileNotFoundException e) {
  91                         e.printStackTrace();
  92                 } catch (IOException e) {
  93                         e.printStackTrace();
  94                 }
  95         }
  96
  97         private String trimSpace(String line) {
  98                 int i, j;
  99                 char ch;
 100                 for (i = 0; i < line.length(); i++) {
 101                         ch = line.charAt(i);
 102                         if (ch != ' ' && ch != '\t')
 103                                 break;
 104                 }
 105                 for (j = line.length() - 1; j >= 0; j--) {
 106                         ch = line.charAt(j);
 107                         if (ch != ' ' && ch != '\t')
 108                                 break;
 109                 }
 110                 if (i > j)
 111                         return "";
 112                 else
 113                         return line.substring(i, j + 1);
 114         }
 115
 116         public static void main(String[] argvs) {
 117                 SpecExtractor extractor = new SpecExtractor();
 118                 File file = new File("./grammer/spec1.txt");
 119                 extractor.extract(file);
 120         }
 121 }