/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * This file is part of SableCC.                             * * See the file "LICENSE" for copyright information and the  * * terms and conditions for copying, distribution and        * * modification of SableCC.                                  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */package org.sablecc.sablecc;import java.io.*;import java.awt.*;import java.util.*;import org.sablecc.sablecc.node.*;import org.sablecc.sablecc.analysis.*;import org.sablecc.sablecc.lexer.*;import org.sablecc.sablecc.parser.*;import java.util.Vector;public class SableCC{  private static void displayCopyright()  {    System.out.println();    System.out.println("SableCC version " + Version.VERSION);    System.out.println("Copyright (C) 1997-2003 Etienne M. Gagnon <etienne.gagnon@uqam.ca> and");    System.out.println("others.  All rights reserved.");    System.out.println();    System.out.println("This software comes with ABSOLUTELY NO WARRANTY.  This is free software,");    System.out.println("and you are welcome to redistribute it under certain conditions.");    System.out.println();    System.out.println("Type 'sablecc -license' to view");    System.out.println("the complete copyright notice and license.");    System.out.println();  }  private static void displayUsage()  {    System.out.println("Usage:");    System.out.println("  sablecc [-d destination] filename [filename]...");    System.out.println("  sablecc -license");  }  public static void main(String[] arguments)  {    String d_option = null;    Vector filename = new Vector();    if(arguments.length == 0)    {      displayCopyright();      displayUsage();      System.exit(1);    }    if((arguments.length == 1) && (arguments[0].equals("-license")))    {      new DisplayLicense();      System.exit(0);    }    displayCopyright();    {      int arg = 0;      while(arg < arguments.length)      {        if(arguments[arg].equals("-d"))        {          if((d_option == null) && (++arg < arguments.length))          {            d_option = arguments[arg];          }          else          {            displayUsage();            System.exit(1);          }        }        else        {          filename.addElement(arguments[arg]);        }        arg++;      }      if(filename.size() == 0)      {        displayUsage();        System.exit(1);      }    }    try    {      for(int i=0; i<filename.size(); i++)      {        processGrammar((String)filename.elementAt(i), d_option);      }    }    catch(Exception e)    {      System.out.println(e);      System.exit(1);    }    catch(Throwable e)    {      System.out.println(e);      System.exit(1);    }    finally    {      System.exit(0);    }  }  /**   * The main method for processing grammar file and generating the parser/lexer.   * @param in input grammar file   * @param dir output directory   */  public static void processGrammar(String grammar, String destDir) throws Exception, Throwable  {    File in;    File dir;    in = new File(grammar);    in = new File(in.getAbsolutePath());    if(destDir == null)    {      dir = new File(in.getParent());    }    else    {      dir = new File(destDir);      dir = new File(dir.getAbsolutePath());    }    processGrammar(in, dir);  }  /**   * The main method for processing grammar file and generating the parser/lexer.   * @param in input grammar file   * @param dir output directory   */  public static void processGrammar(File in,  File dir) throws Exception, Throwable  {    if(!in.exists())    {      System.out.println("ERROR: grammar file "+in.getName()+" does not exist.");      System.exit(1);    }    if(!dir.exists())    {      System.out.println("ERROR: destination directory "+dir.getName()+" does not exist.");      System.exit(1);    }    // re-initialize all static structures in the engine    LR0Collection.reinit();    Symbol.reinit();    Production.reinit();    Grammar.reinit();    System.out.println("\n -- Generating parser for "+in.getName()+" in "+dir.getPath());    FileReader temp;    // Build the AST    Start tree = new Parser(new Lexer(new PushbackReader(                                        new BufferedReader(temp = new FileReader(in)), 1000))).parse();    temp.close();    System.out.println("Verifying identifiers.");    ResolveIds ids = new ResolveIds(dir);    tree.apply(ids);    // Create the node.* and analysis.* files    System.out.println("Generating token classes.");    tree.apply(new GenTokens(ids));    System.out.println("Generating production classes.");    tree.apply(new GenProds(ids));    System.out.println("Generating alternative classes.");    tree.apply(new GenAlts(ids));    System.out.println("Generating analysis classes.");    tree.apply(new GenAnalyses(ids));    System.out.println("Generating utility classes.");    tree.apply(new GenUtils(ids));    try    {      System.out.println("Generating the lexer.");      tree.apply(new GenLexer(ids));    }    catch(Exception e)    {      System.out.println(e.getMessage());      throw e;    }    try    {      System.out.println("Generating the parser.");      tree.apply(new GenParser(ids));    }    catch(Exception e)    {      System.out.println(e.getMessage());      throw e;    }  }}