javaccglobals.java

来自「java 编译器java复杂编译器,可以编译java文件的类库」· Java 代码 · 共 586 行 · 第 1/2 页

  }

  /**
   * Returns a Vector of names of the tools that have been used to generate
   * the given file.
   */
  public static Vector getToolNames(String fileName) {
     char[] buf = new char[256];
     java.io.FileReader stream = null;
     int read, total = 0;

     try {
       stream = new java.io.FileReader(fileName);

       for (;;)
          if ((read = stream.read(buf, total, buf.length - total)) != -1)
          {
             if ((total += read) == buf.length)
                break;
          }
          else
             break;

       return makeToolNameVector(new String(buf, 0, total));
    } catch(java.io.FileNotFoundException e1) {
    } catch(java.io.IOException e2) {
       if (total > 0)
          return makeToolNameVector(new String(buf, 0, total));
    }
    finally {
       try { stream.close(); }
       catch (Exception e3) { }
    }

    return new Vector();
  }

  public static void storeOutputDirSpec(Object loc, String val) {
    outputDirName = val;
    outputDirNameLoc = loc;
  }

  public static void setOutputDir() {
     if (outputDirName == null)
        return;

     File tmp = new File(outputDirName);

     if (!tmp.exists()) {
        if (outputDirNameLoc == null)
           JavaCCErrors.warning("Output directory \"" + outputDirName + "\" does not exist. Creating the directory.");
        else
           JavaCCErrors.warning(outputDirNameLoc, "Output directory \"" + outputDirName + "\" does not exist. Creating the directory.");

        if (!tmp.mkdir()) {
           if (outputDirNameLoc == null)
              JavaCCErrors.semantic_error("Cannot create the output directory : " + outputDirName);
           else
              JavaCCErrors.semantic_error(outputDirNameLoc, "Cannot create the output directory : " + outputDirName);

           return;
        }
     }

     if (!tmp.isDirectory()) {
        if (outputDirNameLoc == null)
           JavaCCErrors.semantic_error("\"" + outputDirName + " is not a valid output directory.");
        else
           JavaCCErrors.semantic_error(outputDirNameLoc, "\"" + outputDirName + " is not a valid output directory.");

        return;
     }

     if (!tmp.canWrite()) {
        if (outputDirNameLoc == null)
           JavaCCErrors.semantic_error("Cannot write to the output output directory : \"" + outputDirName + "\"");
        else
           JavaCCErrors.semantic_error(outputDirNameLoc, "Cannot write to the output output directory : \"" + outputDirName + "\"");

        return;
     }

     outputDir = tmp;
  }

  static public String staticOpt() {
    if (Options.B("STATIC")) {
      return "static ";
    } else {
      return "";
    }
  }

  static public String add_escapes(String str) {
    String retval = "";
    char ch;
    for (int i = 0; i < str.length(); i++) {
      ch = str.charAt(i);
      if (ch == '\b') {
        retval += "\\b";
      } else if (ch == '\t') {
        retval += "\\t";
      } else if (ch == '\n') {
        retval += "\\n";
      } else if (ch == '\f') {
        retval += "\\f";
      } else if (ch == '\r') {
        retval += "\\r";
      } else if (ch == '\"') {
        retval += "\\\"";
      } else if (ch == '\'') {
        retval += "\\\'";
      } else if (ch == '\\') {
        retval += "\\\\";
      } else if (ch < 0x20 || ch > 0x7e) {
	String s = "0000" + Integer.toString(ch, 16);
	retval += "\\u" + s.substring(s.length() - 4, s.length());
      } else {
        retval += ch;
      }
    }
    return retval;
  }

  static public String addUnicodeEscapes(String str) {
    String retval = "";
    char ch;
    for (int i = 0; i < str.length(); i++) {
      ch = str.charAt(i);
      if (ch < 0x20 || ch > 0x7e) {
	String s = "0000" + Integer.toString(ch, 16);
	retval += "\\u" + s.substring(s.length() - 4, s.length());
      } else {
        retval += ch;
      }
    }
    return retval;
  }

  static protected int cline, ccol;

  static protected void printTokenSetup(Token t) {
    Token tt = t;
    while (tt.specialToken != null) tt = tt.specialToken;
    cline = tt.beginLine;
    ccol = tt.beginColumn;
  }

  static protected void printTokenOnly(Token t, java.io.PrintWriter ostr) {
    for (; cline < t.beginLine; cline++) {
      ostr.println(""); ccol = 1;
    }
    for (; ccol < t.beginColumn; ccol++) {
      ostr.print(" ");
    }
    if (t.kind == JavaCCParserConstants.STRING_LITERAL ||
        t.kind == JavaCCParserConstants.CHARACTER_LITERAL)
       ostr.print(addUnicodeEscapes(t.image));
    else
       ostr.print(t.image);
    cline = t.endLine;
    ccol = t.endColumn+1;
    char last = t.image.charAt(t.image.length()-1);
    if (last == '\n' || last == '\r') {
      cline++; ccol = 1;
    }
  }

  static protected void printToken(Token t, java.io.PrintWriter ostr) {
    Token tt = t.specialToken;
    if (tt != null) {
      while (tt.specialToken != null) tt = tt.specialToken;
      while (tt != null) {
        printTokenOnly(tt, ostr);
        tt = tt.next;
      }
    }
    printTokenOnly(t, ostr);
  }

  static protected void printLeadingComments(Token t, java.io.PrintWriter ostr) {
    if (t.specialToken == null) return;
    Token tt = t.specialToken;
    while (tt.specialToken != null) tt = tt.specialToken;
    while (tt != null) {
      printTokenOnly(tt, ostr);
      tt = tt.next;
    }
    if (ccol != 1 && cline != t.beginLine) {
      ostr.println("");
      cline++; ccol = 1;
    }
  }

  static protected void printTrailingComments(Token t, java.io.PrintWriter ostr) {
    if (t.next == null) return;
    printLeadingComments(t.next);
  }

  static protected String printTokenOnly(Token t) {
    String retval = "";
    for (; cline < t.beginLine; cline++) {
      retval += "\n"; ccol = 1;
    }
    for (; ccol < t.beginColumn; ccol++) {
      retval += " ";
    }
    if (t.kind == JavaCCParserConstants.STRING_LITERAL ||
        t.kind == JavaCCParserConstants.CHARACTER_LITERAL)
       retval += addUnicodeEscapes(t.image);
    else
       retval += t.image;
    cline = t.endLine;
    ccol = t.endColumn+1;
    char last = t.image.charAt(t.image.length()-1);
    if (last == '\n' || last == '\r') {
      cline++; ccol = 1;
    }
    return retval;
  }

  static protected String printToken(Token t) {
    String retval = "";
    Token tt = t.specialToken;
    if (tt != null) {
      while (tt.specialToken != null) tt = tt.specialToken;
      while (tt != null) {
        retval += printTokenOnly(tt);
        tt = tt.next;
      }
    }
    retval += printTokenOnly(t);
    return retval;
  }

  static protected String printLeadingComments(Token t) {
    String retval = "";
    if (t.specialToken == null) return retval;
    Token tt = t.specialToken;
    while (tt.specialToken != null) tt = tt.specialToken;
    while (tt != null) {
      retval += printTokenOnly(tt);
      tt = tt.next;
    }
    if (ccol != 1 && cline != t.beginLine) {
      retval += "\n";
      cline++; ccol = 1;
    }
    return retval;
  }

  static protected String printTrailingComments(Token t) {
    if (t.next == null) return "";
    return printLeadingComments(t.next);
  }

   public static void reInit()
   {
      fileName = null;
      origFileName = null;
      outputDir = new File(System.getProperty("user.dir"));
      outputDirName = null;
      outputDirNameLoc = null;
      jjtreeGenerated = false;
      jjcovGenerated = false;
      toolNames = null;
      cu_name = null;
      cu_to_insertion_point_1 = new java.util.Vector();
      cu_to_insertion_point_2 = new java.util.Vector();
      cu_from_insertion_point_2 = new java.util.Vector();
      bnfproductions = new java.util.Vector();
      production_table = new java.util.Hashtable();
      lexstate_S2I = new java.util.Hashtable();
      lexstate_I2S = new java.util.Hashtable();
      token_mgr_decls = null;
      rexprlist = new java.util.Vector();
      tokenCount = (int)0;
      named_tokens_table = new java.util.Hashtable();
      ordered_named_tokens = new java.util.Vector();
      names_of_tokens = new java.util.Hashtable();
      rexps_of_tokens = new java.util.Hashtable();
      simple_tokens_table = new java.util.Hashtable();
      maskindex = 0;
      jj2index = 0;
      maskVals = new Vector();
      cline = (int)0;
      ccol = (int)0;
      actForEof = null;
      nextStateForEof = null;
   }

}