javafiles.java

java 编译器java复杂编译器,可以编译java文件的类库

    ostr.println("  }");
    ostr.println("  public void ReInit(java.io.InputStream dstream, int startline,");
    ostr.println("                                                           int startcolumn)");
    ostr.println("  {");
    ostr.println("     ReInit(dstream, startline, startcolumn, 4096);");
    ostr.println("  }");
    ostr.println(prefix + "public String GetImage()");
    ostr.println("  {");
    ostr.println("     if (bufpos >= tokenBegin)");
    ostr.println("        return new String(buffer, tokenBegin, bufpos - tokenBegin + 1);");
    ostr.println("     else");
    ostr.println("        return new String(buffer, tokenBegin, bufsize - tokenBegin) +");
    ostr.println("                              new String(buffer, 0, bufpos + 1);");
    ostr.println("  }");
    ostr.println("");
    ostr.println(prefix + "public char[] GetSuffix(int len)");
    ostr.println("  {");
    ostr.println("     char[] ret = new char[len];");
    ostr.println("");
    ostr.println("     if ((bufpos + 1) >= len)");
    ostr.println("        System.arraycopy(buffer, bufpos - len + 1, ret, 0, len);");
    ostr.println("     else");
    ostr.println("     {");
    ostr.println("        System.arraycopy(buffer, bufsize - (len - bufpos - 1), ret, 0,");
    ostr.println("                                                          len - bufpos - 1);");
    ostr.println("        System.arraycopy(buffer, 0, ret, len - bufpos - 1, bufpos + 1);");
    ostr.println("     }");
    ostr.println("");
    ostr.println("     return ret;");
    ostr.println("  }");
    ostr.println("");
    ostr.println(prefix + "public void Done()");
    ostr.println("  {");
    ostr.println("     buffer = null;");

    if (OtherFilesGen.keepLineCol)
    {
    ostr.println("     bufline = null;");
    ostr.println("     bufcolumn = null;");
    }

    ostr.println("  }");

    if (OtherFilesGen.keepLineCol)
    {
    ostr.println("");
    ostr.println("  /**");
    ostr.println("   * Method to adjust line and column numbers for the start of a token.");
    ostr.println("   */");
    ostr.println(prefix + "public void adjustBeginLineColumn(int newLine, int newCol)");
    ostr.println("  {");
    ostr.println("     int start = tokenBegin;");
    ostr.println("     int len;");
    ostr.println("");
    ostr.println("     if (bufpos >= tokenBegin)");
    ostr.println("     {");
    ostr.println("        len = bufpos - tokenBegin + inBuf + 1;");
    ostr.println("     }");
    ostr.println("     else");
    ostr.println("     {");
    ostr.println("        len = bufsize - tokenBegin + bufpos + 1 + inBuf;");
    ostr.println("     }");
    ostr.println("");
    ostr.println("     int i = 0, j = 0, k = 0;");
    ostr.println("     int nextColDiff = 0, columnDiff = 0;");
    ostr.println("");
    ostr.println("     while (i < len &&");
    ostr.println("            bufline[j = start % bufsize] == bufline[k = ++start % bufsize])");
    ostr.println("     {");
    ostr.println("        bufline[j] = newLine;");
    ostr.println("        nextColDiff = columnDiff + bufcolumn[k] - bufcolumn[j];");
    ostr.println("        bufcolumn[j] = newCol + columnDiff;");
    ostr.println("        columnDiff = nextColDiff;");
    ostr.println("        i++;");
    ostr.println("     } ");
    ostr.println("");
    ostr.println("     if (i < len)");
    ostr.println("     {");
    ostr.println("        bufline[j] = newLine++;");
    ostr.println("        bufcolumn[j] = newCol + columnDiff;");
    ostr.println("");
    ostr.println("        while (i++ < len)");
    ostr.println("        {");
    ostr.println("           if (bufline[j = start % bufsize] != bufline[++start % bufsize])");
    ostr.println("              bufline[j] = newLine++;");
    ostr.println("           else");
    ostr.println("              bufline[j] = newLine;");
    ostr.println("        }");
    ostr.println("     }");
    ostr.println("");
    ostr.println("     line = bufline[j];");
    ostr.println("     column = bufcolumn[j];");
    ostr.println("  }");
    ostr.println("");
    }

    ostr.println("}");
    ostr.close();
  }

  public static void gen_CharStream() {
    File tmp = null;
    if ((tmp = new File(outputDir, "CharStream.java")).exists()) {
      CheckVersion("CharStream.java", charStreamVersion);
      return;
    }
    System.out.println("File \"CharStream.java\" does not exist.  Will create one.");
    try {
      ostr = new PrintWriter(
                new BufferedWriter(
                   new FileWriter(tmp),
                   8192
                )
             );
    } catch (IOException e) {
      JavaCCErrors.semantic_error("Could not open file CharStream.java for writing.");
      throw new Error();
    }

    ostr.println("/* " + getIdString(toolName, "CharStream.java") + " Version " + charStreamVersion + " */");

    if (cu_to_insertion_point_1.size() != 0 &&
        ((Token)cu_to_insertion_point_1.elementAt(0)).kind == PACKAGE
       ) {
      for (int i = 1; i < cu_to_insertion_point_1.size(); i++) {
        if (((Token)cu_to_insertion_point_1.elementAt(i)).kind == SEMICOLON) {
          cline = ((Token)(cu_to_insertion_point_1.elementAt(0))).beginLine;
          ccol = ((Token)(cu_to_insertion_point_1.elementAt(0))).beginColumn;
          for (int j = 0; j <= i; j++) {
            printToken((Token)(cu_to_insertion_point_1.elementAt(j)), ostr);
          }
          ostr.println("");
          ostr.println("");
          break;
        }
      }
    }
    ostr.println("/**");
    ostr.println(" * This interface describes a character stream that maintains line and");
    ostr.println(" * column number positions of the characters.  It also has the capability");
    ostr.println(" * to backup the stream to some extent.  An implementation of this");
    ostr.println(" * interface is used in the TokenManager implementation generated by");
    ostr.println(" * JavaCCParser.");
    ostr.println(" *");
    ostr.println(" * All the methods except backup can be implemented in any fashion. backup");
    ostr.println(" * needs to be implemented correctly for the correct operation of the lexer.");
    ostr.println(" * Rest of the methods are all used to get information like line number,");
    ostr.println(" * column number and the String that constitutes a token and are not used");
    ostr.println(" * by the lexer. Hence their implementation won't affect the generated lexer's");
    ostr.println(" * operation.");
    ostr.println(" */");
    ostr.println("");
    ostr.println("public interface CharStream {");
    ostr.println("");
    ostr.println("  /**");
    ostr.println("   * Returns the next character from the selected input.  The method");
    ostr.println("   * of selecting the input is the responsibility of the class");
    ostr.println("   * implementing this interface.  Can throw any java.io.IOException.");
    ostr.println("   */");
    ostr.println("  char readChar() throws java.io.IOException;");
    ostr.println("");
    ostr.println("  /**");
    ostr.println("   * Returns the column position of the character last read.");
    ostr.println("   * @deprecated ");
    ostr.println("   * @see #getEndColumn");
    ostr.println("   */");
    ostr.println("  int getColumn();");
    ostr.println("");
    ostr.println("  /**");
    ostr.println("   * Returns the line number of the character last read.");
    ostr.println("   * @deprecated ");
    ostr.println("   * @see #getEndLine");
    ostr.println("   */");
    ostr.println("  int getLine();");
    ostr.println("");
    ostr.println("  /**");
    ostr.println("   * Returns the column number of the last character for current token (being");
    ostr.println("   * matched after the last call to BeginTOken).");
    ostr.println("   */");
    ostr.println("  int getEndColumn();");
    ostr.println("");
    ostr.println("  /**");
    ostr.println("   * Returns the line number of the last character for current token (being");
    ostr.println("   * matched after the last call to BeginTOken).");
    ostr.println("   */");
    ostr.println("  int getEndLine();");
    ostr.println("");
    ostr.println("  /**");
    ostr.println("   * Returns the column number of the first character for current token (being");
    ostr.println("   * matched after the last call to BeginTOken).");
    ostr.println("   */");
    ostr.println("  int getBeginColumn();");
    ostr.println("");
    ostr.println("  /**");
    ostr.println("   * Returns the line number of the first character for current token (being");
    ostr.println("   * matched after the last call to BeginTOken).");
    ostr.println("   */");
    ostr.println("  int getBeginLine();");
    ostr.println("");
    ostr.println("  /**");
    ostr.println("   * Backs up the input stream by amount steps. Lexer calls this method if it");
    ostr.println("   * had already read some characters, but could not use them to match a");
    ostr.println("   * (longer) token. So, they will be used again as the prefix of the next");
    ostr.println("   * token and it is the implemetation's responsibility to do this right.");
    ostr.println("   */");
    ostr.println("  void backup(int amount);");
    ostr.println("");
    ostr.println("  /**");
    ostr.println("   * Returns the next character that marks the beginning of the next token.");
    ostr.println("   * All characters must remain in the buffer between two successive calls");
    ostr.println("   * to this method to implement backup correctly.");
    ostr.println("   */");
    ostr.println("  char BeginToken() throws java.io.IOException;");
    ostr.println("");
    ostr.println("  /**");
    ostr.println("   * Returns a string made up of characters from the marked token beginning ");
    ostr.println("   * to the current buffer position. Implementations have the choice of returning");
    ostr.println("   * anything that they want to. For example, for efficiency, one might decide");
    ostr.println("   * to just return null, which is a valid implementation.");
    ostr.println("   */");
    ostr.println("  String GetImage();");
    ostr.println("");
    ostr.println("  /**");
    ostr.println("   * Returns an array of characters that make up the suffix of length 'len' for");
    ostr.println("   * the currently matched token. This is used to build up the matched string");
    ostr.println("   * for use in actions in the case of MORE. A simple and inefficient");
    ostr.println("   * implementation of this is as follows :");
    ostr.println("   *");
    ostr.println("   *   {");
    ostr.println("   *      String t = GetImage();");
    ostr.println("   *      return t.substring(t.length() - len, t.length()).toCharArray();");
    ostr.println("   *   }");
    ostr.println("   */");
    ostr.println("  char[] GetSuffix(int len);");
    ostr.println("");
    ostr.println("  /**");
    ostr.println("   * The lexer calls this function to indicate that it is done with the stream");
    ostr.println("   * and hence implementations can free any resources held by this class.");
    ostr.println("   * Again, the body of this function can be just empty and it will not");
    ostr.println("   * affect the lexer's operation.");
    ostr.println("   */");
    ostr.println("  void Done();");
    ostr.println("");
    ostr.println("}");
    ostr.close();
  }

  public static void gen_ParseException() {
    File tmp = null;
    if ((tmp = new File(outputDir, "ParseException.java")).exists()) {
      CheckVersion("ParseException.java", parseExceptionVersion);
      return;
    }
    System.out.println("File \"ParseException.java\" does not exist.  Will create one.");
    try {
      ostr = new PrintWriter(
                new BufferedWriter(
                   new FileWriter(tmp),
                   8192
                )
             );
    } catch (IOException e) {
      JavaCCErrors.semantic_error("Could not open file ParseException.java for writing.");
      throw new Error();
    }

    ostr.println("/* " + getIdString(toolName, "ParseException.java") + " Version " + parseExceptionVersion + " */");

    if (cu_to_insertion_point_1.size() != 0 &&
        ((Token)cu_to_insertion_point_1.elementAt(0)).kind == PACKAGE
       ) {
      for (int i = 1; i < cu_to_insertion_point_1.size(); i++) {
        if (((Token)cu_to_insertion_point_1.elementAt(i)).kind == SEMICOLON) {
          cline = ((Token)(cu_to_insertion_point_1.elementAt(0))).beginLine;
          ccol = ((Token)(cu_to_insertion_point_1.elementAt(0))).beginColumn;
          for (int j = 0; j <= i; j++) {
            printToken((Token)(cu_to_insertion_point_1.elementAt(j)), ostr);
          }
          ostr.println("");
          ostr.println("");
          break;
        }
      }
    }
    ostr.println("/**");
    ostr.println(" * This exception is thrown when parse errors are encountered.");
    ostr.println(" * You can explicitly create objects of this exception type by");
    ostr.println(" * calling the method generateParseException in the generated");
    ostr.println(" * parser.");
    ostr.println(" *");
    ostr.println(" * You can modify this class to customize your error reporting");
    ostr.println(" * mechanisms so long as you retain the public fields.");
    ostr.println(" */");
    ostr.println("public class ParseException extends Exception {");
    ostr.println("");
    ostr.println("  /**");
    ostr.println("   * This constructor is used by the method \"generateParseException\"");
    ostr.println("   * in the generated parser.  Calling this constructor generates");
    ostr.println("   * a new object of this type with the fields \"currentToken\",");
    ostr.println("   * \"expectedTokenSequences\", and \"tokenImage\" set.  The boolean");
    ostr.println("   * flag \"specialConstructor\" is also set to true to indicate that");
    ostr.println("   * this constructor was used to create this object.");
    ostr.println("   * This constructor calls its super class with the empty string");
    ostr.println("   * to force the \"toString\" method of parent class \"Throwable\" to");
    ostr.println("   * print the error message in the form:");
    ostr.println("   *     ParseException: <result of getMessage>");
    ostr.println("   */");
    ostr.println("  public ParseException(Token currentTokenVal,");
    ostr.println("                        int[][] expectedTokenSequencesVal,");
    ostr.println("                        String[] tokenImageVal");
    ostr.println("                       )");
    ostr.println("  {");
    ostr.println("    super(\"\");");
    ostr.println("    specialConstructor = true;");
    ostr.println("    currentToken = currentTokenVal;");
    ostr.println("    expectedTokenSequences = expectedTokenSequencesVal;");
    ostr.println("    tokenImage = tokenImageVal;");
    ostr.println("  }");
    ostr.println("");
    ostr.println("  /**");
    ostr.println("   * The following constructors are for use by you for whatever");
    ostr.println("   * purpose you can think of.  Constructing the exception in this");
    ostr.println("   * manner makes the exception behave in the normal way - i.e., as");
    ostr.println("   * documented in the class \"Throwable\".  The fields \"errorToken\",");
    ostr.println("   * \"expectedTokenSequences\", and \"tokenImage\" do not contain");
    ostr.println("   * relevant information.  The JavaCC generated code does not use");
    ostr.println("   * these constructors.");
    ostr.println("   */");
    ostr.println("");
    ostr.println("  public ParseException() {");
    ostr.println("    super();");
    ostr.println("    specialConstructor = false;");
    ostr.println("  }");
    ostr.println("");
    ostr