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/* Generated By:JavaCC: Do not edit this line. SACParserCSS1.java */
package com.steadystate.css.parser;

import java.io.*;
import java.net.*;
import java.text.MessageFormat;
import java.util.*;
import org.w3c.css.sac.*;
import com.steadystate.css.parser.*;
import com.steadystate.css.parser.selectors.*;

/**
 * @author David Schweinsberg
 * @version $Id: SACParserCSS1.jj,v 1.6 2010-05-19 13:26:51 waldbaer Exp $
 */
public class SACParserCSS1 extends AbstractSACParser implements Parser, SACParserCSS1Constants {

    private boolean _quiet = true;

    public SACParserCSS1() {
        this((CharStream) null);
    }

    public String getParserVersion() {
        return "http://www.w3.org/TR/REC-CSS1";
    }

    protected String getGrammarUri()
    {
        return "http://www.w3.org/TR/REC-CSS1#appendix-b";
    }

    protected Token getToken()
    {
        return this.token;
    }

    public void mediaList(SACMediaListImpl ml)
    {
    }

//
// stylesheet
//  : [S|CDO|CDC]* [ import [S|CDO|CDC]* ]*
//      [ ruleset [S|CDO|CDC]* ]*
//  ;
//
  final public void styleSheet() throws ParseException {
    try {
          this.handleStartDocument();
      styleSheetRuleList();
      jj_consume_token(0);
    } finally {
        this.handleEndDocument();
    }
  }

// Although the grammar does not include [S|CDO|CDC] but [CDO|CDC], white space
// should be allowed
  final public void styleSheetRuleList() throws ParseException {
  boolean ruleFound = false;
    label_1:
    while (true) {
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case S:
      case CDO:
      case CDC:
        ;
        break;
      default:
        jj_la1[0] = jj_gen;
        break label_1;
      }
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case S:
        jj_consume_token(S);
        break;
      case CDO:
        jj_consume_token(CDO);
        break;
      case CDC:
        jj_consume_token(CDC);
        break;
      default:
        jj_la1[1] = jj_gen;
        jj_consume_token(-1);
        throw new ParseException();
      }
    }
    label_2:
    while (true) {
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case IDENT:
      case LINK_PSCLASS:
      case VISITED_PSCLASS:
      case ACTIVE_PSCLASS:
      case HASH:
      case DOT:
      case IMPORT_SYM:
      case ATKEYWORD:
        ;
        break;
      default:
        jj_la1[2] = jj_gen;
        break label_2;
      }
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case IMPORT_SYM:
        importRule(ruleFound);
        break;
      case IDENT:
      case LINK_PSCLASS:
      case VISITED_PSCLASS:
      case ACTIVE_PSCLASS:
      case HASH:
      case DOT:
      case ATKEYWORD:
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case IDENT:
        case LINK_PSCLASS:
        case VISITED_PSCLASS:
        case ACTIVE_PSCLASS:
        case HASH:
        case DOT:
          styleRule();
          break;
        case ATKEYWORD:
          unknownRule();
          break;
        default:
          jj_la1[3] = jj_gen;
          jj_consume_token(-1);
          throw new ParseException();
        }
                ruleFound = true;
        break;
      default:
        jj_la1[4] = jj_gen;
        jj_consume_token(-1);
        throw new ParseException();
      }
      label_3:
      while (true) {
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case S:
        case CDO:
        case CDC:
          ;
          break;
        default:
          jj_la1[5] = jj_gen;
          break label_3;
        }
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case S:
          jj_consume_token(S);
          break;
        case CDO:
          jj_consume_token(CDO);
          break;
        case CDC:
          jj_consume_token(CDC);
          break;
        default:
          jj_la1[6] = jj_gen;
          jj_consume_token(-1);
          throw new ParseException();
        }
      }
    }
  }

//
// This is used by ASTStyleSheet.insertRule to parse a single rule
//
  final public void styleSheetRuleSingle() throws ParseException {
    label_4:
    while (true) {
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case S:
        ;
        break;
      default:
        jj_la1[7] = jj_gen;
        break label_4;
      }
      jj_consume_token(S);
    }
    switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
    case IMPORT_SYM:
      importRule(false);
      break;
    case IDENT:
    case LINK_PSCLASS:
    case VISITED_PSCLASS:
    case ACTIVE_PSCLASS:
    case HASH:
    case DOT:
      styleRule();
      break;
    case ATKEYWORD:
      unknownRule();
      break;
    default:
      jj_la1[8] = jj_gen;
      jj_consume_token(-1);
      throw new ParseException();
    }
  }

  final public void unknownRule() throws ParseException {
    Token t;
    String s;
    Locator locator;
    try {
      t = jj_consume_token(ATKEYWORD);
            locator = this.getLocator();
            s = skip();
            this.handleIgnorableAtRule(s, locator);
    } catch (ParseException e) {
        this.getErrorHandler().error(
            this.toCSSParseException("invalidUnknownRule", e));
    }
  }

//
// import
//   : IMPORT_SYM S*
//     [STRING|URI] ';' S*
//   ;
//
  final public void importRule(final boolean nonImportRuleFoundBefore) throws ParseException {
    Token t;
    Locator locator;
    try {
            ParseException e = null;
            if (nonImportRuleFoundBefore)
            {
                e = generateParseException();
            }
      jj_consume_token(IMPORT_SYM);
            locator = this.getLocator();
      label_5:
      while (true) {
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case S:
          ;
          break;
        default:
          jj_la1[9] = jj_gen;
          break label_5;
        }
        jj_consume_token(S);
      }
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case STRING:
        t = jj_consume_token(STRING);
        break;
      case URL:
        t = jj_consume_token(URL);
        break;
      default:
        jj_la1[10] = jj_gen;
        jj_consume_token(-1);
        throw new ParseException();
      }
      label_6:
      while (true) {
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case S:
          ;
          break;
        default:
          jj_la1[11] = jj_gen;
          break label_6;
        }
        jj_consume_token(S);
      }
      jj_consume_token(SEMICOLON);
            if (nonImportRuleFoundBefore)
            {
        this.getErrorHandler().error(this.toCSSParseException("invalidImportRuleIgnored", e));
            }
            else
            {
                this.handleImportStyle(unescape(t.image, false), new SACMediaListImpl(), null, locator);
            }
    } catch (CSSParseException e) {
        this.getErrorHandler().error(e);
        this.error_skipAtRule();
    } catch (ParseException e) {
        this.getErrorHandler().error(
            this.toCSSParseException("invalidImportRule", e));
        this.error_skipAtRule();
    }
  }

//
// medium
//   : IDENT S*
//   ;
//
  final public String medium() throws ParseException {
  Token t;
    t = jj_consume_token(IDENT);
    label_7:
    while (true) {
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case S:
        ;
        break;
      default:
        jj_la1[12] = jj_gen;
        break label_7;
      }
      jj_consume_token(S);
    }
        this.handleMedium(t.image, this.createLocator(t));
        {if (true) return t.image;}
    throw new Error("Missing return statement in function");
  }

//
// operator
//  : '/' | ',' | /* empty */
//  ;
//
  final public LexicalUnit operator(LexicalUnit prev) throws ParseException {
  Token t;
    switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
    case SLASH:
      t = jj_consume_token(SLASH);
      label_8:
      while (true) {
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case S:
          ;
          break;
        default:
          jj_la1[13] = jj_gen;
          break label_8;
        }
        jj_consume_token(S);
      }
                           {if (true) return new LexicalUnitImpl(prev, LexicalUnit.SAC_OPERATOR_SLASH);}
      break;
    case COMMA:
      t = jj_consume_token(COMMA);
      label_9:
      while (true) {
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case S:
          ;
          break;
        default:
          jj_la1[14] = jj_gen;
          break label_9;
        }
        jj_consume_token(S);
      }
                           {if (true) return new LexicalUnitImpl(prev, LexicalUnit.SAC_OPERATOR_COMMA);}
      break;
    default:
      jj_la1[15] = jj_gen;
      jj_consume_token(-1);
      throw new ParseException();
    }
    throw new Error("Missing return statement in function");
  }

//
// unary_operator
//   : '-' | '+'
//   ;
//
  final public char unaryOperator() throws ParseException {
    switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
    case MINUS:
      jj_consume_token(MINUS);
              {if (true) return '-';}
      break;
    case PLUS:
      jj_consume_token(PLUS);
                                       {if (true) return '+';}
      break;
    default:
      jj_la1[16] = jj_gen;
      jj_consume_token(-1);
      throw new ParseException();
    }
    throw new Error("Missing return statement in function");
  }

//
// property
//   : IDENT S*
//   ;
//
  final public String property() throws ParseException {
    Token t;
    t = jj_consume_token(IDENT);
    label_10:
    while (true) {
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case S:
        ;
        break;
      default:
        jj_la1[17] = jj_gen;
        break label_10;
      }
      jj_consume_token(S);
    }
      {if (true) return unescape(t.image, false);}
    throw new Error("Missing return statement in function");
  }

//
// ruleset
//   : selector [ ',' S* selector ]*
//     '{' S* declaration [ ';' S* declaration ]* '}' S*
//   ;
//
  final public void styleRule() throws ParseException {
    SelectorList selList = null;
    boolean start = false;
    Token t;
    try {
            t = this.getToken();
      selList = selectorList();
      jj_consume_token(LBRACE);
      label_11:
      while (true) {
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case S:
          ;
          break;
        default:
          jj_la1[18] = jj_gen;
          break label_11;
        }
        jj_consume_token(S);
      }
            start = true;
            this.handleStartSelector(selList, this.createLocator(t.next));
      styleDeclaration();
      jj_consume_token(RBRACE);
    } catch (CSSParseException e) {
        this.getErrorHandler().error(e);
        this.error_skipblock();
    } catch (ParseException e) {
        this.getErrorHandler().error(this.toCSSParseException("invalidStyleRule", e));
        this.error_skipblock();
    } finally {
        if (start) {
            this.handleEndSelector(selList);
        }
    }
  }

  final public SelectorList parseSelectorsInternal() throws ParseException {
    SelectorList selectors;
    selectors = selectorList();
    jj_consume_token(0);
        {if (true) return selectors;}
    throw new Error("Missing return statement in function");
  }

  final public SelectorList selectorList() throws ParseException {
    SelectorListImpl selList = new SelectorListImpl();
    Selector sel;
    sel = selector();
        if (sel instanceof Locatable)
        {
            ((Locatable) selList).setLocator(((Locatable) sel).getLocator());
        }
    label_12:
    while (true) {
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case COMMA:
        ;
        break;
      default:
        jj_la1[19] = jj_gen;
        break label_12;
      }
      jj_consume_token(COMMA);
      label_13:
      while (true) {
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case S:
          ;
          break;
        default:
          jj_la1[20] = jj_gen;
          break label_13;
        }
        jj_consume_token(S);
      }
                         selList.add(sel);
      sel = selector();
    }
    label_14:
    while (true) {
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case S:
        ;
        break;
      default:
        jj_la1[21] = jj_gen;
        break label_14;
      }
      jj_consume_token(S);
    }
        selList.add(sel);
        {if (true) return selList;}
    throw new Error("Missing return statement in function");
  }

//
// selector
//   : simple_selector+ [ pseudo_element ]? 
//   ;
//
  final public Selector selector() throws ParseException {
    Selector sel;
    SimpleSelector pseudoElementSel = null;
    try {
      sel = simpleSelector(null, ' ');
      label_15:
      while (true) {
        if (jj_2_1(2)) {
          ;
        } else {
          break label_15;
        }
        jj_consume_token(S);
        sel = simpleSelector(sel, ' ');
      }
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case FIRST_LINE:
      case FIRST_LETTER:
        pseudoElementSel = pseudoElement();
        break;
      default:
        jj_la1[22] = jj_gen;
        ;
      }
            if (pseudoElementSel != null)
            {
                sel = this.getSelectorFactory().createDescendantSelector(sel, pseudoElementSel);
            }
            this.handleSelector(sel);
            {if (true) return sel;}
    } catch (ParseException e) {
        {if (true) throw this.toCSSParseException("invalidSelector", e);}
        //skipSelector();

    }
    throw new Error("Missing return statement in function");
  }

//
// simple_selector
//  : element_name id? class? pseudo_class?    /* eg: H1.subject */
//  | class? pseudo_class?        /* eg: #xyz33 */
//  | pseudo_class?            /* eg: .author */
//  ;
//
  final public Selector simpleSelector(Selector sel, char comb) throws ParseException {
    SimpleSelector simpleSel = null;
    Condition c = null;
    try {
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case IDENT:
        simpleSel = elementName();
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case HASH:
          c = hash(c);
          break;
        default:
          jj_la1[23] = jj_gen;
          ;
        }
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case DOT:
          c = _class(c);
          break;
        default:
          jj_la1[24] = jj_gen;
          ;
        }
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case LINK_PSCLASS:
        case VISITED_PSCLASS:
        case ACTIVE_PSCLASS:
          c = pseudoClass(c);
          break;
        default:
          jj_la1[25] = jj_gen;
          ;
        }
        break;
      case HASH:
                simpleSel = this.getSelectorFactory().createElementSelector(null, null);
        c = hash(c);
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case DOT:
          c = _class(c);
          break;
        default:
          jj_la1[26] = jj_gen;
          ;
        }
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case LINK_PSCLASS:
        case VISITED_PSCLASS:
        case ACTIVE_PSCLASS:
          c = pseudoClass(c);
          break;
        default:
          jj_la1[27] = jj_gen;
          ;
        }
        break;
      case DOT:
                simpleSel = this.getSelectorFactory().createElementSelector(null, null);
        c = _class(c);
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case LINK_PSCLASS:
        case VISITED_PSCLASS:
        case ACTIVE_PSCLASS:
          c = pseudoClass(c);
          break;
        default:
          jj_la1[28] = jj_gen;
          ;
        }
        break;
      case LINK_PSCLASS:
      case VISITED_PSCLASS:
      case ACTIVE_PSCLASS:
                simpleSel = this.getSelectorFactory().createElementSelector(null, null);
        c = pseudoClass(c);
        break;
      default:
        jj_la1[29] = jj_gen;
        jj_consume_token(-1);
        throw new ParseException();
      }
            if (c != null) {
                simpleSel = this.getSelectorFactory().createConditionalSelector(simpleSel, c);
            }

            if (sel != null) {
                switch (comb) {
                case ' ':
                    sel = this.getSelectorFactory().createDescendantSelector(sel, simpleSel);
                    break;
                }
            } else {
                sel = simpleSel;
            }

            {if (true) return sel;}
    } catch (ParseException e) {
        {if (true) throw this.toCSSParseException("invalidSimpleSelector", e);}
    }
    throw new Error("Missing return statement in function");
  }

//
// class
//   : '.' IDENT
//   ;
//
  final public Condition _class(Condition pred) throws ParseException {
    Token t;
    Locator locator;
    try {
      jj_consume_token(DOT);
            locator = this.getLocator();
      t = jj_consume_token(IDENT);
            Condition c = this.getConditionFactory().createClassCondition(null, t.image);
            if (c instanceof Locatable)
            {
                ((Locatable) c).setLocator(locator);
            }
            {if (true) return (pred == null) ? c : this.getConditionFactory().createAndCondition(pred, c);}
    } catch (ParseException e) {
        {if (true) throw this.toCSSParseException("invalidClassSelector", e);}
    }
    throw new Error("Missing return statement in function");
  }

//
// element_name
//   : IDENT 
//   ;
//
  final public SimpleSelector elementName() throws ParseException {
    Token t;
    SimpleSelector sel;
    try {
      t = jj_consume_token(IDENT);
            sel = this.getSelectorFactory().createElementSelector(null, unescape(t.image, false));
            if (sel instanceof Locatable)
            {
                ((Locatable) sel).setLocator(this.getLocator());
            }
            {if (true) return sel;}
    } catch (ParseException e) {
        {if (true) throw this.toCSSParseException("invalidElementName", e);}
    }
    throw new Error("Missing return statement in function");
  }

//
// solitary_pseudo_class                /* as in:  :link */
//  : LINK_PSCLASS
//  | VISITED_PSCLASS
//  | ACTIVE_PSCLASS
//  ;
//
  final public Condition pseudoClass(Condition pred) throws ParseException {
    Condition c;
    Token t;
    try {
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case LINK_PSCLASS:
        t = jj_consume_token(LINK_PSCLASS);
        break;
      case VISITED_PSCLASS:
        t = jj_consume_token(VISITED_PSCLASS);
        break;
      case ACTIVE_PSCLASS:
        t = jj_consume_token(ACTIVE_PSCLASS);
        break;
      default:
        jj_la1[30] = jj_gen;
        jj_consume_token(-1);
        throw new ParseException();
      }
            String s = t.image;
            c = this.getConditionFactory().createPseudoClassCondition(null, s);
            if (c instanceof Locatable)
               {
                   ((Locatable) c).setLocator(this.getLocator());
               }
            {if (true) return (pred == null)
                ? c
                : this.getConditionFactory().createAndCondition(pred, c);}
    } catch (ParseException e) {
        {if (true) throw this.toCSSParseException("invalidPseudoClass", e);}
    }
    throw new Error("Missing return statement in function");
  }

//
// pseudo_element                  /* as in:  P:first-line */
//  : FIRST_LETTER_AFTER_IDENT
//  | FIRST_LINE_AFTER_IDENT
//  ;
//
  final public SimpleSelector pseudoElement() throws ParseException {
    SimpleSelector sel;
    Token t;
    try {
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case FIRST_LETTER:
        t = jj_consume_token(FIRST_LETTER);
        break;
      case FIRST_LINE:
        t = jj_consume_token(FIRST_LINE);
        break;
      default:
        jj_la1[31] = jj_gen;
        jj_consume_token(-1);
        throw new ParseException();
      }
            String s = t.image;
            sel = this.getSelectorFactory().createPseudoElementSelector(null, s);
            if (sel instanceof Locatable)
            {
                ((Locatable) sel).setLocator(this.getLocator());
            }
            {if (true) return sel;}
    } catch (ParseException e) {
        {if (true) throw this.toCSSParseException("invalidPseudoElement", e);}
    }
    throw new Error("Missing return statement in function");
  }

  final public Condition hash(Condition pred) throws ParseException {
    Token t;
    try {
      t = jj_consume_token(HASH);
            Condition c = this.getConditionFactory().createIdCondition(t.image.substring(1));
            if (c instanceof Locatable)
            {
                ((Locatable) c).setLocator(this.getLocator());
            }
            {if (true) return (pred == null) ? c : this.getConditionFactory().createAndCondition(pred, c);}
    } catch (ParseException e) {
        {if (true) throw this.toCSSParseException("invalidHash", e);}
    }
    throw new Error("Missing return statement in function");
  }

  final public void styleDeclaration() throws ParseException {
    try {
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case IDENT:
        declaration();
        break;
      default:
        jj_la1[32] = jj_gen;
        ;
      }
      label_16:
      while (true) {
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case SEMICOLON:
          ;
          break;
        default:
          jj_la1[33] = jj_gen;
          break label_16;
        }
        jj_consume_token(SEMICOLON);
        label_17:
        while (true) {
          switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
          case S:
            ;
            break;
          default:
            jj_la1[34] = jj_gen;
            break label_17;
          }
          jj_consume_token(S);
        }
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case IDENT:
          declaration();
          break;
        default:
          jj_la1[35] = jj_gen;
          ;
        }
      }
    } catch (ParseException ex) {
        this.getErrorHandler().error(this.toCSSParseException("invalidDeclaration", ex));
        error_skipdecl();
    }
  }

//
// declaration
//   : property ':' S* expr prio?
//   |
//   ;
//
  final public void declaration() throws ParseException {
  String p;
  LexicalUnit e;
  boolean priority = false;
  Locator locator = null;
    try {
      p = property();
            locator = this.getLocator();
      jj_consume_token(COLON);
      label_18:
      while (true) {
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case S:
          ;
          break;
        default:
          jj_la1[36] = jj_gen;
          break label_18;
        }
        jj_consume_token(S);
      }
      e = expr();
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case IMPORTANT_SYM:
        priority = prio();
        break;
      default:
        jj_la1[37] = jj_gen;
        ;
      }
            this.handleProperty(p, e, priority, locator);
    } catch (CSSParseException ex) {
        this.getErrorHandler().error(ex);
        error_skipdecl();
    } catch (ParseException ex) {
        this.getErrorHandler().error(this.toCSSParseException("invalidDeclaration", ex));
        error_skipdecl();
    }
  }

//
// prio
//   : IMPORTANT_SYM S*
//   ;
//
  final public boolean prio() throws ParseException {
    jj_consume_token(IMPORTANT_SYM);
    label_19:
    while (true) {
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case S:
        ;
        break;
      default:
        jj_la1[38] = jj_gen;
        break label_19;
      }
      jj_consume_token(S);
    }
    {if (true) return true;}
    throw new Error("Missing return statement in function");
  }

//
// expr
//   : term [ operator term ]*
//   ;
//
// TODO: Deal with the operator
//
  final public LexicalUnit expr() throws ParseException {
    LexicalUnit head;
    LexicalUnit body;
    try {
      head = term(null);
                            body = head;
      label_20:
      while (true) {
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case IDENT:
        case HASH:
        case COMMA:
        case SLASH:
        case PLUS:
        case MINUS:
        case STRING:
        case URL:
        case EMS:
        case EXS:
        case LENGTH_PX:
        case LENGTH_CM:
        case LENGTH_MM:
        case LENGTH_IN:
        case LENGTH_PT:
        case LENGTH_PC:
        case PERCENTAGE:
        case NUMBER:
        case RGB:
        case UNICODERANGE:
          ;
          break;
        default:
          jj_la1[39] = jj_gen;
          break label_20;
        }
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case COMMA:
        case SLASH:
          body = operator(body);
          break;
        default:
          jj_la1[40] = jj_gen;
          ;
        }
        body = term(body);
      }
          {if (true) return head;}
    } catch (ParseException ex) {
        {if (true) throw this.toCSSParseException("invalidExpr", ex);}
    }
    throw new Error("Missing return statement in function");
  }

//
// term
//   : unary_operator?
//     [ NUMBER S* | PERCENTAGE S* | LENGTH S* | EMS S* | EXS S* |
//        STRING S* | URI S* | RGB S* | hexcolor ]
//   ;
//
  final public LexicalUnit term(LexicalUnit prev) throws ParseException {
  Token t;
  char op = ' ';
  String s;
  LexicalUnit value = null;
  Locator locator = null;
    switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
    case PLUS:
    case MINUS:
      op = unaryOperator();
      break;
    default:
      jj_la1[41] = jj_gen;
      ;
    }
        if (op != ' ')
        {
            locator = this.getLocator();
        }
    switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
    case EMS:
    case EXS:
    case LENGTH_PX:
    case LENGTH_CM:
    case LENGTH_MM:
    case LENGTH_IN:
    case LENGTH_PT:
    case LENGTH_PC:
    case PERCENTAGE:
    case NUMBER:
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case NUMBER:
        t = jj_consume_token(NUMBER);
            try
            {
                value = LexicalUnitImpl.createNumber(prev, intValue(op, t.image));
            }
            catch (NumberFormatException e)
            {
                value = LexicalUnitImpl.createNumber(prev, floatValue(op, t.image));
            }
        break;
      case PERCENTAGE:
        t = jj_consume_token(PERCENTAGE);
                              value = LexicalUnitImpl.createPercentage(prev, floatValue(op, t.image));
        break;
      case LENGTH_PX:
        t = jj_consume_token(LENGTH_PX);
                              value = LexicalUnitImpl.createPixel(prev, floatValue(op, t.image));
        break;
      case LENGTH_CM:
        t = jj_consume_token(LENGTH_CM);
                              value = LexicalUnitImpl.createCentimeter(prev, floatValue(op, t.image));
        break;
      case LENGTH_MM:
        t = jj_consume_token(LENGTH_MM);
                              value = LexicalUnitImpl.createMillimeter(prev, floatValue(op, t.image));
        break;
      case LENGTH_IN:
        t = jj_consume_token(LENGTH_IN);
                              value = LexicalUnitImpl.createInch(prev, floatValue(op, t.image));
        break;
      case LENGTH_PT:
        t = jj_consume_token(LENGTH_PT);
                              value = LexicalUnitImpl.createPoint(prev, floatValue(op, t.image));
        break;
      case LENGTH_PC:
        t = jj_consume_token(LENGTH_PC);
                              value = LexicalUnitImpl.createPica(prev, floatValue(op, t.image));
        break;
      case EMS:
        t = jj_consume_token(EMS);
                              value = LexicalUnitImpl.createEm(prev, floatValue(op, t.image));
        break;
      case EXS:
        t = jj_consume_token(EXS);
                              value = LexicalUnitImpl.createEx(prev, floatValue(op, t.image));
        break;
      default:
        jj_la1[42] = jj_gen;
        jj_consume_token(-1);
        throw new ParseException();
      }
      break;
    case STRING:
      t = jj_consume_token(STRING);
                              value = new LexicalUnitImpl(prev, LexicalUnit.SAC_STRING_VALUE, t.image);
      break;
    case IDENT:
      t = jj_consume_token(IDENT);
                              value = new LexicalUnitImpl(prev, LexicalUnit.SAC_IDENT, t.image);
      break;
    case URL:
      t = jj_consume_token(URL);
                              value = new LexicalUnitImpl(prev, LexicalUnit.SAC_URI, t.image);
      break;
    case UNICODERANGE:
      t = jj_consume_token(UNICODERANGE);
                              value = new LexicalUnitImpl(prev, LexicalUnit.SAC_UNICODERANGE, t.image);
      break;
    case RGB:
      value = rgb(prev);
      break;
    case HASH:
      value = hexcolor(prev);
      break;
    default:
      jj_la1[43] = jj_gen;
      jj_consume_token(-1);
      throw new ParseException();
    }
        if (locator == null)
        {
            locator = this.getLocator();
        }
    label_21:
    while (true) {
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case S:
        ;
        break;
      default:
        jj_la1[44] = jj_gen;
        break label_21;
      }
      jj_consume_token(S);
    }
        if (value instanceof Locatable)
        {
            ((Locatable) value).setLocator(locator);
        }
        {if (true) return value;}
    throw new Error("Missing return statement in function");
  }

//
// rgb
//   : RGB S* expr ')' S*
//   ;
//
  final public LexicalUnit rgb(LexicalUnit prev) throws ParseException {
    Token t;
    LexicalUnit params;
    t = jj_consume_token(RGB);
    label_22:
    while (true) {
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case S:
        ;
        break;
      default:
        jj_la1[45] = jj_gen;
        break label_22;
      }
      jj_consume_token(S);
    }
    params = expr();
    jj_consume_token(RROUND);
        {if (true) return LexicalUnitImpl.createRgbColor(prev, params);}
    throw new Error("Missing return statement in function");
  }

//
// hexcolor
//   : HASH
//   ;
//
  final public LexicalUnit hexcolor(LexicalUnit prev) throws ParseException {
    Token t;
    t = jj_consume_token(HASH);
        {if (true) return this.hexcolorInternal(prev, t);}
    throw new Error("Missing return statement in function");
  }

  void skipSelector() throws ParseException {
    Token t = getToken(1);
    while (t.kind != COMMA && t.kind != SEMICOLON && t.kind != LBRACE && t.kind != EOF ) {
        getNextToken();
        t = getToken(1);
    }
  }

  String skip() throws ParseException {
  StringBuilder sb = new StringBuilder();
  int nesting = 0;
  Token t = getToken(0);
  if (t.image != null) {
    sb.append(t.image);
  }
  do {
    t = getNextToken();
    if (t.kind == EOF)
      break;
    sb.append(t.image);
    if (t.kind == LBRACE)
      nesting++;
    else if (t.kind == RBRACE)
      nesting--;
    else if (t.kind == SEMICOLON && nesting <= 0)
      break;
  }
  while ((t.kind != RBRACE) || (nesting > 0));

  return sb.toString();
  }

  void error_skipblock() throws ParseException {
    Token t;
    int nesting = 0;
    do
    {
        t = getNextToken();
        if (t.kind == LBRACE)
        {
            nesting++;
        }
        else if (t.kind == RBRACE)
        {
            nesting--;
        }
        else if (t.kind == EOF)
        {
            break;
        }
    }
    while ((t.kind != RBRACE) || (nesting > 0));
  }

  void error_skipdecl() throws ParseException {
    int nesting = 0;
    Token t = getToken(1);
    if (t.kind == LBRACE)
    {
        error_skipblock();
    }
    else
    {
        Token oldToken = t;
        while (t.kind != SEMICOLON && t.kind != RBRACE && t.kind != EOF )
        {
            oldToken = t;
            t = getNextToken();
        }
        if (t.kind == RBRACE)
        {
            token = oldToken;
        }
    }
  }

  void error_skipAtRule() throws ParseException {
    Token t = null;
    do
    {
        t = getNextToken();
    }
    while (t.kind != SEMICOLON && t.kind != EOF);
  }

  private boolean jj_2_1(int xla) {
    jj_la = xla; jj_lastpos = jj_scanpos = token;
    try { return !jj_3_1(); }
    catch(LookaheadSuccess ls) { return true; }
    finally { jj_save(0, xla); }
  }

  private boolean jj_3R_28() {
    if (jj_scan_token(IDENT)) return true;
    return false;
  }

  private boolean jj_3R_26() {
    if (jj_3R_30()) return true;
    return false;
  }

  private boolean jj_3R_31() {
    Token xsp;
    xsp = jj_scanpos;
    if (jj_scan_token(4)) {
    jj_scanpos = xsp;
    if (jj_scan_token(5)) {
    jj_scanpos = xsp;
    if (jj_scan_token(6)) return true;
    }
    }
    return false;
  }

  private boolean jj_3_1() {
    if (jj_scan_token(S)) return true;
    if (jj_3R_23()) return true;
    return false;
  }

  private boolean jj_3R_23() {
    Token xsp;
    xsp = jj_scanpos;
    if (jj_3R_24()) {
    jj_scanpos = xsp;
    if (jj_3R_25()) {
    jj_scanpos = xsp;
    if (jj_3R_26()) {
    jj_scanpos = xsp;
    if (jj_3R_27()) return true;
    }
    }
    }
    return false;
  }

  private boolean jj_3R_30() {
    if (jj_scan_token(DOT)) return true;
    return false;
  }

  private boolean jj_3R_25() {
    if (jj_3R_29()) return true;
    return false;
  }

  private boolean jj_3R_29() {
    if (jj_scan_token(HASH)) return true;
    return false;
  }

  private boolean jj_3R_24() {
    if (jj_3R_28()) return true;
    return false;
  }

  private boolean jj_3R_27() {
    if (jj_3R_31()) return true;
    return false;
  }

  /** Generated Token Manager. */
  public SACParserCSS1TokenManager token_source;
  /** Current token. */
  public Token token;
  /** Next token. */
  public Token jj_nt;
  private int jj_ntk;
  private Token jj_scanpos, jj_lastpos;
  private int jj_la;
  private int jj_gen;
  final private int[] jj_la1 = new int[46];
  static private int[] jj_la1_0;
  static private int[] jj_la1_1;
  static private int[] jj_la1_2;
  static {
      jj_la1_init_0();
      jj_la1_init_1();
      jj_la1_init_2();
   }
   private static void jj_la1_init_0() {
      jj_la1_0 = new int[] {0xc000002,0xc000002,0x50002278,0x40002278,0x50002278,0xc000002,0xc000002,0x2,0x50002278,0x2,0x2800000,0x2,0x2,0x2,0x2,0x11000,0x60000,0x2,0x2,0x1000,0x2,0x2,0x180,0x200,0x2000,0x70,0x2000,0x70,0x70,0x2278,0x70,0x180,0x8,0x4000,0x2,0x8,0x2,0x20000000,0x2,0x82871208,0x11000,0x60000,0x80000000,0x82800208,0x2,0x2,};
   }
   private static void jj_la1_init_1() {
      jj_la1_1 = new int[] {0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x23ff,0x0,0x0,0x1ff,0x23ff,0x0,0x0,};
   }
   private static void jj_la1_init_2() {
      jj_la1_2 = new int[] {0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,};
   }
  final private JJCalls[] jj_2_rtns = new JJCalls[1];
  private boolean jj_rescan = false;
  private int jj_gc = 0;

  /** Constructor with user supplied CharStream. */
  public SACParserCSS1(CharStream stream) {
    token_source = new SACParserCSS1TokenManager(stream);
    token = new Token();
    jj_ntk = -1;
    jj_gen = 0;
    for (int i = 0; i < 46; i++) jj_la1[i] = -1;
    for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
  }

  /** Reinitialise. */
  public void ReInit(CharStream stream) {
    token_source.ReInit(stream);
    token = new Token();
    jj_ntk = -1;
    jj_gen = 0;
    for (int i = 0; i < 46; i++) jj_la1[i] = -1;
    for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
  }

  /** Constructor with generated Token Manager. */
  public SACParserCSS1(SACParserCSS1TokenManager tm) {
    token_source = tm;
    token = new Token();
    jj_ntk = -1;
    jj_gen = 0;
    for (int i = 0; i < 46; i++) jj_la1[i] = -1;
    for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
  }

  /** Reinitialise. */
  public void ReInit(SACParserCSS1TokenManager tm) {
    token_source = tm;
    token = new Token();
    jj_ntk = -1;
    jj_gen = 0;
    for (int i = 0; i < 46; i++) jj_la1[i] = -1;
    for (int i = 0; i < jj_2_rtns.length; i++) jj_2_rtns[i] = new JJCalls();
  }

  private Token jj_consume_token(int kind) throws ParseException {
    Token oldToken;
    if ((oldToken = token).next != null) token = token.next;
    else token = token.next = token_source.getNextToken();
    jj_ntk = -1;
    if (token.kind == kind) {
      jj_gen++;
      if (++jj_gc > 100) {
        jj_gc = 0;
        for (int i = 0; i < jj_2_rtns.length; i++) {
          JJCalls c = jj_2_rtns[i];
          while (c != null) {
            if (c.gen < jj_gen) c.first = null;
            c = c.next;
          }
        }
      }
      return token;
    }
    token = oldToken;
    jj_kind = kind;
    throw generateParseException();
  }

  static private final class LookaheadSuccess extends java.lang.Error { }
  final private LookaheadSuccess jj_ls = new LookaheadSuccess();
  private boolean jj_scan_token(int kind) {
    if (jj_scanpos == jj_lastpos) {
      jj_la--;
      if (jj_scanpos.next == null) {
        jj_lastpos = jj_scanpos = jj_scanpos.next = token_source.getNextToken();
      } else {
        jj_lastpos = jj_scanpos = jj_scanpos.next;
      }
    } else {
      jj_scanpos = jj_scanpos.next;
    }
    if (jj_rescan) {
      int i = 0; Token tok = token;
      while (tok != null && tok != jj_scanpos) { i++; tok = tok.next; }
      if (tok != null) jj_add_error_token(kind, i);
    }
    if (jj_scanpos.kind != kind) return true;
    if (jj_la == 0 && jj_scanpos == jj_lastpos) throw jj_ls;
    return false;
  }


/** Get the next Token. */
  final public Token getNextToken() {
    if (token.next != null) token = token.next;
    else token = token.next = token_source.getNextToken();
    jj_ntk = -1;
    jj_gen++;
    return token;
  }

/** Get the specific Token. */
  final public Token getToken(int index) {
    Token t = token;
    for (int i = 0; i < index; i++) {
      if (t.next != null) t = t.next;
      else t = t.next = token_source.getNextToken();
    }
    return t;
  }

  private int jj_ntk() {
    if ((jj_nt=token.next) == null)
      return (jj_ntk = (token.next=token_source.getNextToken()).kind);
    else
      return (jj_ntk = jj_nt.kind);
  }

  private java.util.List jj_expentries = new java.util.ArrayList();
  private int[] jj_expentry;
  private int jj_kind = -1;
  private int[] jj_lasttokens = new int[100];
  private int jj_endpos;

  private void jj_add_error_token(int kind, int pos) {
    if (pos >= 100) return;
    if (pos == jj_endpos + 1) {
      jj_lasttokens[jj_endpos++] = kind;
    } else if (jj_endpos != 0) {
      jj_expentry = new int[jj_endpos];
      for (int i = 0; i < jj_endpos; i++) {
        jj_expentry[i] = jj_lasttokens[i];
      }
      jj_entries_loop: for (java.util.Iterator it = jj_expentries.iterator(); it.hasNext();) {
        int[] oldentry = (int[])(it.next());
        if (oldentry.length == jj_expentry.length) {
          for (int i = 0; i < jj_expentry.length; i++) {
            if (oldentry[i] != jj_expentry[i]) {
              continue jj_entries_loop;
            }
          }
          jj_expentries.add(jj_expentry);
          break jj_entries_loop;
        }
      }
      if (pos != 0) jj_lasttokens[(jj_endpos = pos) - 1] = kind;
    }
  }

  /** Generate ParseException. */
  public ParseException generateParseException() {
    jj_expentries.clear();
    boolean[] la1tokens = new boolean[67];
    if (jj_kind >= 0) {
      la1tokens[jj_kind] = true;
      jj_kind = -1;
    }
    for (int i = 0; i < 46; i++) {
      if (jj_la1[i] == jj_gen) {
        for (int j = 0; j < 32; j++) {
          if ((jj_la1_0[i] & (1< jj_gen) {
          jj_la = p.arg; jj_lastpos = jj_scanpos = p.first;
          switch (i) {
            case 0: jj_3_1(); break;
          }
        }
        p = p.next;
      } while (p != null);
      } catch(LookaheadSuccess ls) { }
    }
    jj_rescan = false;
  }

  private void jj_save(int index, int xla) {
    JJCalls p = jj_2_rtns[index];
    while (p.gen > jj_gen) {
      if (p.next == null) { p = p.next = new JJCalls(); break; }
      p = p.next;
    }
    p.gen = jj_gen + xla - jj_la; p.first = token; p.arg = xla;
  }

  static final class JJCalls {
    int gen;
    Token first;
    int arg;
    JJCalls next;
  }

}




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