/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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 org.sablecc.sablecc.analysis.*;import org.sablecc.sablecc.node.*;import java.io.*;import java.util.LinkedList;public class GenTokens extends DepthFirstAdapter{  private MacroExpander macros;  private ResolveIds ids;  private File pkgDir;  private String pkgName;  //    final GenTokens instance = this;  String text;  public GenTokens(ResolveIds ids)  {    this.ids = ids;    try    {      macros = new MacroExpander(                 new InputStreamReader(                   getClass().getResourceAsStream("tokens.txt")));    }    catch(IOException e)    {      throw new RuntimeException("unable to open tokens.txt.");    }    pkgDir = new File(ids.pkgDir, "node");    pkgName = ids.pkgName.equals("") ? "node" : ids.pkgName + ".node";    if(!pkgDir.exists())    {      if(!pkgDir.mkdir())      {        throw new RuntimeException("Unable to create " + pkgDir.getAbsolutePath());      }    }  }  public void inATokenDef(ATokenDef node)  {    String name = (String) ids.names.get(node);    BufferedWriter file;    try    {      file = new BufferedWriter(               new FileWriter(                 new File(pkgDir, name + ".java")));    }    catch(IOException e)    {      throw new RuntimeException("Unable to create " + new File(pkgDir, name + ".java").getAbsolutePath());    }    text = null;    ARegExp regExp = (ARegExp) node.getRegExp();    AConcat concat = (AConcat) regExp.getConcat();    LinkedList regExpTails = regExp.getConcats();    if(regExpTails.size() == 0)    {      LinkedList unExps = concat.getUnExps();      if(unExps.size() == 1)      {        AUnExp unExp = (AUnExp) unExps.getFirst();        PBasic basic = unExp.getBasic();        if((basic instanceof AStringBasic) &&            (unExp.getUnOp() == null))        {          text = ((AStringBasic) basic).getString().getText();          text = text.substring(1, text.length() - 1);        }        else if((basic instanceof ACharBasic) &&                (unExp.getUnOp() == null))        {          PChar pChar = ((ACharBasic) basic).getChar();          if(pChar instanceof ACharChar)          {            text = ((ACharChar) pChar).getChar().getText();            text = text.substring(1, text.length() - 1);          }        }      }    }    try    {      if(text == null)      {        ids.fixedTokens.put(node, new Boolean(false));        macros.apply(file, "VariableTextToken", new String[] { pkgName,                     ids.pkgName.equals("") ? "analysis" : ids.pkgName + ".analysis",                     name});      }      else      {        ids.fixedTokens.put(node, new Boolean(true));        macros.apply(file, "FixedTextToken", new String[] { pkgName,                     ids.pkgName.equals("") ? "analysis" : ids.pkgName + ".analysis",                     name, processText(text)});        ids.errorNames.put(node, "'" + text + "'");      }    }    catch(IOException e)    {      throw new RuntimeException("An error occured while writing to " +                                 new File(pkgDir, name + ".java").getAbsolutePath());    }    try    {      file.close();    }    catch(IOException e)    {}  }  private String processText(String s)  {    StringBuffer result = new StringBuffer();    for(int i = 0; i < s.length(); i++)    {      char c = s.charAt(i);      switch(c)      {      case '\b':        {          result.append("\\t");          break;        }      case '\t':        {          result.append("\\t");          break;        }      case '\n':        {          result.append("\\n");          break;        }      case '\f':        {          result.append("\\f");          break;        }      case '\r':        {          result.append("\\r");          break;        }      case '\"':        {          result.append("\\\"");          break;        }      case '\'':        {          result.append("\\\'");          break;        }      case '\\':        {          result.append("\\\\");          break;        }      default:        {          result.append(c);        }      }    }    return result.toString();  }}