javafiles.java

java 编译器java复杂编译器,可以编译java文件的类库

    }

    ostr.println("    inputStream = dstream;");

    if (OtherFilesGen.keepLineCol)
    {
    ostr.println("    line = startline;");
    ostr.println("    column = startcolumn - 1;");
    }

    ostr.println("");
    ostr.println("    available = bufsize = buffersize;");
    ostr.println("    buffer = new char[buffersize];");

    if (OtherFilesGen.keepLineCol)
    {
    ostr.println("    bufline = new int[buffersize];");
    ostr.println("    bufcolumn = new int[buffersize];");
    }

    ostr.println("    nextCharBuf = new char[4096];");
    ostr.println("  }");
    ostr.println("");
    ostr.println("  public JavaCharStream(java.io.Reader dstream,");
    ostr.println("                                        int startline, int startcolumn)");
    ostr.println("  {");
    ostr.println("     this(dstream, startline, startcolumn, 4096);");
    ostr.println("  }");
    ostr.println("");
    ostr.println("  public JavaCharStream(java.io.Reader dstream)");
    ostr.println("  {");
    ostr.println("     this(dstream, 1, 1, 4096);");
    ostr.println("  }");
    ostr.println("  public void ReInit(java.io.Reader dstream,");
    ostr.println("                 int startline, int startcolumn, int buffersize)");
    ostr.println("  {");
    ostr.println("    inputStream = dstream;");

    if (OtherFilesGen.keepLineCol)
    {
    ostr.println("    line = startline;");
    ostr.println("    column = startcolumn - 1;");
    }

    ostr.println("");
    ostr.println("    if (buffer == null || buffersize != buffer.length)");
    ostr.println("    {");
    ostr.println("      available = bufsize = buffersize;");
    ostr.println("      buffer = new char[buffersize];");

    if (OtherFilesGen.keepLineCol)
    {
    ostr.println("      bufline = new int[buffersize];");
    ostr.println("      bufcolumn = new int[buffersize];");
    }

    ostr.println("      nextCharBuf = new char[4096];");
    ostr.println("    }");

    if (OtherFilesGen.keepLineCol)
    {
    ostr.println("    prevCharIsLF = prevCharIsCR = false;");
    }

    ostr.println("    tokenBegin = inBuf = maxNextCharInd = 0;");
    ostr.println("    nextCharInd = bufpos = -1;");
    ostr.println("  }");
    ostr.println("");
    ostr.println("  public void ReInit(java.io.Reader dstream,");
    ostr.println("                                        int startline, int startcolumn)");
    ostr.println("  {");
    ostr.println("     ReInit(dstream, startline, startcolumn, 4096);");
    ostr.println("  }");
    ostr.println("");
    ostr.println("  public void ReInit(java.io.Reader dstream)");
    ostr.println("  {");
    ostr.println("     ReInit(dstream, 1, 1, 4096);");
    ostr.println("  }");
    ostr.println("  public JavaCharStream(java.io.InputStream dstream, int startline,");
    ostr.println("  int startcolumn, int buffersize)");
    ostr.println("  {");
    ostr.println("     this(new java.io.InputStreamReader(dstream), startline, startcolumn, 4096);");
    ostr.println("  }");
    ostr.println("");
    ostr.println("  public JavaCharStream(java.io.InputStream dstream, int startline,");
    ostr.println("                                                           int startcolumn)");
    ostr.println("  {");
    ostr.println("     this(dstream, startline, startcolumn, 4096);");
    ostr.println("  }");
    ostr.println("");
    ostr.println("  public JavaCharStream(java.io.InputStream dstream)");
    ostr.println("  {");
    ostr.println("     this(dstream, 1, 1, 4096);");
    ostr.println("  }");
    ostr.println("");
    ostr.println("  public void ReInit(java.io.InputStream dstream, int startline,");
    ostr.println("  int startcolumn, int buffersize)");
    ostr.println("  {");
    ostr.println("     ReInit(new java.io.InputStreamReader(dstream), startline, startcolumn, 4096);");
    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("  public void ReInit(java.io.InputStream dstream)");
    ostr.println("  {");
    ostr.println("     ReInit(dstream, 1, 1, 4096);");
    ostr.println("  }");
    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("     nextCharBuf = null;");
    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_SimpleCharStream() {
    File tmp = null;
    if ((tmp = new File(outputDir, "SimpleCharStream.java")).exists()) {
      CheckVersion("SimpleCharStream.java", charStreamVersion);
      return;
    }

    System.out.println("File \"SimpleCharStream.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 SimpleCharStream.java for writing.");
      throw new Error();
    }

    ostr.println("/* " + getIdString(toolName, "SimpleCharStream.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;
        }
      }
    }
    String prefix = (Options.B("STATIC") ? "  static " : "  ");
    ostr.println("/**");
    ostr.println(" * An implementation of interface CharStream, where the stream is assumed to");
    ostr.println(" * contain only ASCII characters (without unicode processing).");
    ostr.println(" */");
    ostr.println("");
    ostr.println("public class SimpleCharStream");
    ostr.println("{");
    ostr.println("  public static final boolean staticFlag = " +
                                         Options.B("STATIC") + ";");
    ostr.println(prefix + "int bufsize;");
    ostr.println(prefix + "int available;");
    ostr.println(prefix + "int tokenBegin;");
    ostr.println(prefix + "public int bufpos = -1;");

    if (OtherFilesGen.keepLineCol)
    {
       ostr.println(prefix + "protected int bufline[];");
       ostr.println(prefix + "protected int bufcolumn[];");
       ostr.println("");
       ostr.println(prefix + "protected int column = 0;");
       ostr.println(prefix + "protected int line = 1;");
       ostr.println("");
       ostr.println(prefix + "protected boolean prevCharIsCR = false;");
       ostr.println(prefix + "protected boolean prevCharIsLF = false;");
    }

    ostr.println("");
    ostr.println(prefix + "protected java.io.Reader inputStream;");
    ostr.println("");
    ostr.println(prefix + "protected char[] buffer;");
    ostr.println(prefix + "protected int maxNextCharInd = 0;");
    ostr.println(prefix + "protected int inBuf = 0;");
    ostr.println("");
    ostr.println(prefix + "protected void ExpandBuff(boolean wrapAround)");
    ostr.println("  {");
    ostr.println("     char[] newbuffer = new char[bufsize + 2048];");

    if (OtherFilesGen.keepLineCol)
    {
       ostr.println("     int newbufline[] = new int[bufsize + 2048];");
       ostr.println("     int newbufcolumn[] = new int[bufsize + 2048];");
    }

    ostr.println("");
    ostr.println("     try");
    ostr.println("     {");
    ostr.println("        if (wrapAround)");
    ostr.println("        {");
    ostr.println("           System.arraycopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin);");
    ostr.println("           System.arraycopy(buffer, 0, newbuffer,");
    ostr.println("                                             bufsize - tokenBegin, bufpos);");
    ostr.println("           buffer = newbuffer;");

    if (OtherFilesGen.keepLineCol)
    {
    ostr.println("");
    ostr.println("           System.arraycopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin);");
    ostr.println("           System.arraycopy(bufline, 0, newbufline, bufsize - tokenBegin, bufpos);");
    ostr.println("           bufline = newbufline;");
    ostr.println("");
    ostr.println("           System.arraycopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin);");
    ostr.println("           System.arraycopy(bufcolumn, 0, newbufcolumn, bufsize - tokenBegin, bufpos);");
    ostr.println("           bufcolumn = newbufcolumn;");
    }

    ostr.println("");
    ostr.println("           maxNextCharInd = (bufpos += (bufsize - tokenBegin));");
    ostr.println("        }");
    ostr.println("        else");
    ostr.println("        {");
    ostr.println("           System.arraycopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin);");
    ostr.println("           buffer = newbuffer;");

    if (OtherFilesGen.keepLineCol)
    {
    ostr.println("");
    ostr.println("           System.arraycopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin);");
    ostr.println("           bufline = newbufline;");
    ostr.println("");
    ostr.println("           System.arraycopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin);");
    ostr.println("           bufcolumn = newbufcolumn;");
    }

    ostr.println("");
    ostr.println("           maxNextCharInd = (bufpos -= tokenBegin);");
    ostr.println("        }");
    ostr.println("     }");
    ostr.println("     catch (Throwable t)");
    ostr.println("     {");
    ostr.println("        throw new Error(t.getMessage());");
    ostr.println("     }");
    ostr.println("");
    ostr.println("");