mirror of git://gcc.gnu.org/git/gcc.git
				
				
				
			
		
			
				
	
	
		
			795 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
			
		
		
	
	
			795 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
%{
 | 
						|
/* XPathParser.y - An XPath 1.0 parser.
 | 
						|
   Copyright (C) 2004 The Free Software Foundation
 | 
						|
 | 
						|
This file is part of GNU Classpath.
 | 
						|
 | 
						|
GNU Classpath is free software; you can redistribute it and/or modify
 | 
						|
it under the terms of the GNU General Public License as published by
 | 
						|
the Free Software Foundation; either version 2, or (at your option)
 | 
						|
any later version.
 | 
						|
 | 
						|
GNU Classpath is distributed in the hope that it will be useful, but
 | 
						|
WITHOUT ANY WARRANTY; without even the implied warranty of
 | 
						|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 | 
						|
General Public License for more details.
 | 
						|
 | 
						|
You should have received a copy of the GNU General Public License
 | 
						|
along with GNU Classpath; see the file COPYING.  If not, write to the
 | 
						|
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 | 
						|
02110-1301 USA.
 | 
						|
 | 
						|
Linking this library statically or dynamically with other modules is
 | 
						|
making a combined work based on this library.  Thus, the terms and
 | 
						|
conditions of the GNU General Public License cover the whole
 | 
						|
combination.
 | 
						|
 | 
						|
As a special exception, the copyright holders of this library give you
 | 
						|
permission to link this library with independent modules to produce an
 | 
						|
executable, regardless of the license terms of these independent
 | 
						|
modules, and to copy and distribute the resulting executable under
 | 
						|
terms of your choice, provided that you also meet, for each linked
 | 
						|
independent module, the terms and conditions of the license of that
 | 
						|
module.  An independent module is a module which is not derived from
 | 
						|
or based on this library.  If you modify this library, you may extend
 | 
						|
this exception to your version of the library, but you are not
 | 
						|
obligated to do so.  If you do not wish to do so, delete this
 | 
						|
exception statement from your version. */
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						|
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						|
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package gnu.xml.xpath;
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						|
 | 
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import java.util.ArrayList;
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						|
import java.util.Collections;
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						|
import java.util.List;
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						|
import java.util.Map;
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						|
import javax.xml.namespace.NamespaceContext;
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						|
import javax.xml.namespace.QName;
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						|
import javax.xml.xpath.XPathFunctionResolver;
 | 
						|
import javax.xml.xpath.XPathVariableResolver;
 | 
						|
import org.w3c.dom.Node;
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						|
 | 
						|
/**
 | 
						|
 * An XPath 1.0 parser.
 | 
						|
 *
 | 
						|
 * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
 | 
						|
 */
 | 
						|
public class XPathParser
 | 
						|
{
 | 
						|
 | 
						|
  NamespaceContext namespaceContext;
 | 
						|
  XPathVariableResolver variableResolver;
 | 
						|
  XPathFunctionResolver functionResolver;
 | 
						|
 | 
						|
  QName getQName(String name)
 | 
						|
  {
 | 
						|
    QName qName = QName.valueOf(name);
 | 
						|
    if (namespaceContext != null)
 | 
						|
      {
 | 
						|
        String prefix = qName.getPrefix();
 | 
						|
        String uri = qName.getNamespaceURI();
 | 
						|
        if (prefix != null && (uri == null || uri.length() == 0))
 | 
						|
          {
 | 
						|
            uri = namespaceContext.getNamespaceURI(prefix);
 | 
						|
            String localName = qName.getLocalPart();
 | 
						|
            qName = new QName(uri, localName, prefix);
 | 
						|
          }
 | 
						|
      }
 | 
						|
    return qName;
 | 
						|
  }
 | 
						|
 | 
						|
  Expr lookupFunction(String name, List<Expr> args)
 | 
						|
  {
 | 
						|
    int arity = args.size();
 | 
						|
    if ("position".equals(name) && arity == 0)
 | 
						|
      {
 | 
						|
        return new PositionFunction();
 | 
						|
      }
 | 
						|
    else if ("last".equals(name) && arity == 0)
 | 
						|
      {
 | 
						|
        return new LastFunction();
 | 
						|
      }
 | 
						|
    else if ("string".equals(name) && (arity == 1 || arity == 0))
 | 
						|
      {
 | 
						|
        return new StringFunction(args);
 | 
						|
      }
 | 
						|
    else if ("number".equals(name) && (arity == 1 || arity == 0))
 | 
						|
      {
 | 
						|
        return new NumberFunction(args);
 | 
						|
      }
 | 
						|
    else if ("boolean".equals(name) && arity == 1)
 | 
						|
      {
 | 
						|
        return new BooleanFunction(args);
 | 
						|
      }
 | 
						|
    else if ("count".equals(name) && arity == 1)
 | 
						|
      {
 | 
						|
        return new CountFunction(args);
 | 
						|
      }
 | 
						|
    else if ("not".equals(name) && arity == 1)
 | 
						|
      {
 | 
						|
        return new NotFunction(args);
 | 
						|
      }
 | 
						|
    else if ("id".equals(name) && arity == 1)
 | 
						|
      {
 | 
						|
        return new IdFunction(args);
 | 
						|
      }
 | 
						|
    else if ("concat".equals(name) && arity > 1)
 | 
						|
      {
 | 
						|
        return new ConcatFunction(args);
 | 
						|
      }
 | 
						|
    else if ("true".equals(name) && arity == 0)
 | 
						|
      {
 | 
						|
        return new TrueFunction();
 | 
						|
      }
 | 
						|
    else if ("false".equals(name) && arity == 0)
 | 
						|
      {
 | 
						|
        return new FalseFunction();
 | 
						|
      }
 | 
						|
    else if ("name".equals(name) && (arity == 1 || arity == 0))
 | 
						|
      {
 | 
						|
        return new NameFunction(args);
 | 
						|
      }
 | 
						|
    else if ("local-name".equals(name) && (arity == 1 || arity == 0))
 | 
						|
      {
 | 
						|
        return new LocalNameFunction(args);
 | 
						|
      }
 | 
						|
    else if ("namespace-uri".equals(name) && (arity == 1 || arity == 0))
 | 
						|
      {
 | 
						|
        return new NamespaceUriFunction(args);
 | 
						|
      }
 | 
						|
    else if ("starts-with".equals(name) && arity == 2)
 | 
						|
      {
 | 
						|
        return new StartsWithFunction(args);
 | 
						|
      }
 | 
						|
    else if ("contains".equals(name) && arity == 2)
 | 
						|
      {
 | 
						|
        return new ContainsFunction(args);
 | 
						|
      }
 | 
						|
    else if ("string-length".equals(name) && (arity == 1 || arity == 0))
 | 
						|
      {
 | 
						|
        return new StringLengthFunction(args);
 | 
						|
      }
 | 
						|
    else if ("translate".equals(name) && arity == 3)
 | 
						|
      {
 | 
						|
        return new TranslateFunction(args);
 | 
						|
      }
 | 
						|
    else if ("normalize-space".equals(name) && (arity == 1 || arity == 0))
 | 
						|
      {
 | 
						|
        return new NormalizeSpaceFunction(args);
 | 
						|
      }
 | 
						|
    else if ("substring".equals(name) && (arity == 2 || arity == 3))
 | 
						|
      {
 | 
						|
        return new SubstringFunction(args);
 | 
						|
      }
 | 
						|
    else if ("substring-before".equals(name) && arity == 2)
 | 
						|
      {
 | 
						|
        return new SubstringBeforeFunction(args);
 | 
						|
      }
 | 
						|
    else if ("substring-after".equals(name) && arity == 2)
 | 
						|
      {
 | 
						|
        return new SubstringAfterFunction(args);
 | 
						|
      }
 | 
						|
    else if ("lang".equals(name) && arity == 1)
 | 
						|
      {
 | 
						|
        return new LangFunction(args);
 | 
						|
      }
 | 
						|
    else if ("sum".equals(name) && arity == 1)
 | 
						|
      {
 | 
						|
        return new SumFunction(args);
 | 
						|
      }
 | 
						|
    else if ("floor".equals(name) && arity == 1)
 | 
						|
      {
 | 
						|
        return new FloorFunction(args);
 | 
						|
      }
 | 
						|
    else if ("ceiling".equals(name) && arity == 1)
 | 
						|
      {
 | 
						|
        return new CeilingFunction(args);
 | 
						|
      }
 | 
						|
    else if ("round".equals(name) && arity == 1)
 | 
						|
      {
 | 
						|
        return new RoundFunction(args);
 | 
						|
      }
 | 
						|
    else if (functionResolver != null)
 | 
						|
      {
 | 
						|
        QName qName = QName.valueOf(name);
 | 
						|
        Object function = functionResolver.resolveFunction(qName, arity);
 | 
						|
        if (function != null &&
 | 
						|
            function instanceof Function &&
 | 
						|
            function instanceof Expr)
 | 
						|
          {
 | 
						|
            Function f = (Function) function;
 | 
						|
            f.setArguments(args);
 | 
						|
            return (Expr) function;
 | 
						|
          }
 | 
						|
      }
 | 
						|
    return new FunctionCall(functionResolver, name, args);
 | 
						|
  }
 | 
						|
 | 
						|
%}
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						|
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						|
%token LITERAL
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						|
%token DIGITS
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						|
%token NAME
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						|
 | 
						|
%token LP // '('
 | 
						|
%token RP // ')'
 | 
						|
%token LB // '['
 | 
						|
%token RB // ']'
 | 
						|
%token COMMA // ','
 | 
						|
%token PIPE // '|'
 | 
						|
%token SLASH // '/'
 | 
						|
%token DOUBLE_SLASH // '//'
 | 
						|
%token EQ // '='
 | 
						|
%token NE // '!='
 | 
						|
%token GT // '>'
 | 
						|
%token LT // '<'
 | 
						|
%token GTE // '>='
 | 
						|
%token LTE // '<='
 | 
						|
%token PLUS // '+'
 | 
						|
%token MINUS // '-'
 | 
						|
%token AT // '@'
 | 
						|
%token STAR // '*'
 | 
						|
%token DOLLAR // '$'
 | 
						|
%token COLON // ':'
 | 
						|
%token DOUBLE_COLON // '::'
 | 
						|
%token DOT // '.'
 | 
						|
%token DOUBLE_DOT // '..'
 | 
						|
 | 
						|
%token ANCESTOR
 | 
						|
%token ANCESTOR_OR_SELF
 | 
						|
%token ATTRIBUTE
 | 
						|
%token CHILD
 | 
						|
%token DESCENDANT
 | 
						|
%token DESCENDANT_OR_SELF
 | 
						|
%token FOLLOWING
 | 
						|
%token FOLLOWING_SIBLING
 | 
						|
%token NAMESPACE
 | 
						|
%token PARENT
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						|
%token PRECEDING
 | 
						|
%token PRECEDING_SIBLING
 | 
						|
%token SELF
 | 
						|
%token DIV
 | 
						|
%token MOD
 | 
						|
%token OR
 | 
						|
%token AND
 | 
						|
%token COMMENT
 | 
						|
%token PROCESSING_INSTRUCTION
 | 
						|
%token TEXT
 | 
						|
%token NODE
 | 
						|
 | 
						|
%right UNARY
 | 
						|
 | 
						|
%start expr
 | 
						|
 | 
						|
%%
 | 
						|
 | 
						|
expr:
 | 
						|
  or_expr
 | 
						|
  ;
 | 
						|
 | 
						|
location_path:
 | 
						|
  relative_location_path
 | 
						|
  | absolute_location_path
 | 
						|
  ;
 | 
						|
 | 
						|
absolute_location_path:
 | 
						|
  SLASH
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						|
    {
 | 
						|
      $$ = new Root();
 | 
						|
    }
 | 
						|
  | SLASH relative_location_path
 | 
						|
    {
 | 
						|
      Steps steps;
 | 
						|
      if ($2 instanceof Steps)
 | 
						|
        {
 | 
						|
          steps = (Steps) $2;
 | 
						|
        }
 | 
						|
      else
 | 
						|
        {
 | 
						|
          steps = new Steps();
 | 
						|
          steps.path.addFirst((Expr) $2);
 | 
						|
        }
 | 
						|
      steps.path.addFirst(new Root());
 | 
						|
      $$ = steps;
 | 
						|
      //$$ = new Step(new Root(), (Path) $2);
 | 
						|
    }
 | 
						|
  | DOUBLE_SLASH relative_location_path
 | 
						|
    {
 | 
						|
      Test nt = new NodeTypeTest((short) 0);
 | 
						|
      Selector s = new Selector(Selector.DESCENDANT_OR_SELF,
 | 
						|
                                Collections.singletonList (nt));
 | 
						|
      Steps steps;
 | 
						|
      if ($2 instanceof Steps)
 | 
						|
        {
 | 
						|
          steps = (Steps) $2;
 | 
						|
        }
 | 
						|
      else
 | 
						|
        {
 | 
						|
          steps = new Steps();
 | 
						|
          steps.path.addFirst((Expr) $2);
 | 
						|
        }
 | 
						|
      steps.path.addFirst(s);
 | 
						|
      steps.path.addFirst(new Root());
 | 
						|
      $$ = steps;
 | 
						|
      //Step step = new Step(s, (Path) $2);
 | 
						|
      //$$ = new Step(new Root(), step);
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
relative_location_path:
 | 
						|
  step
 | 
						|
  | relative_location_path SLASH step
 | 
						|
    {
 | 
						|
      Steps steps;
 | 
						|
      if ($1 instanceof Steps)
 | 
						|
        {
 | 
						|
          steps = (Steps) $1;
 | 
						|
        }
 | 
						|
      else
 | 
						|
        {
 | 
						|
          steps = new Steps();
 | 
						|
          steps.path.addFirst((Expr) $1);
 | 
						|
        }
 | 
						|
      steps.path.addLast((Expr) $3);
 | 
						|
      $$ = steps;
 | 
						|
      //$$ = new Step((Expr) $1, (Path) $3);
 | 
						|
    }
 | 
						|
  | relative_location_path DOUBLE_SLASH step
 | 
						|
    {
 | 
						|
      Test nt = new NodeTypeTest((short) 0);
 | 
						|
      Selector s = new Selector(Selector.DESCENDANT_OR_SELF,
 | 
						|
                                Collections.singletonList (nt));
 | 
						|
      Steps steps;
 | 
						|
      if ($1 instanceof Steps)
 | 
						|
        {
 | 
						|
          steps = (Steps) $1;
 | 
						|
        }
 | 
						|
      else
 | 
						|
        {
 | 
						|
          steps = new Steps();
 | 
						|
          steps.path.addFirst((Expr) $1);
 | 
						|
        }
 | 
						|
      steps.path.addLast(s);
 | 
						|
      steps.path.addLast((Expr) $3);
 | 
						|
      $$ = steps;
 | 
						|
      //Step step = new Step(s, (Path) $3);
 | 
						|
      //$$ = new Step((Expr) $1, step);
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
step:
 | 
						|
  step_node_test
 | 
						|
    {
 | 
						|
      @SuppressWarnings("unchecked") List<Test> tests = (List<Test>) $1;
 | 
						|
      $$ = new Selector (Selector.CHILD, tests);
 | 
						|
    }
 | 
						|
  | AT step_node_test
 | 
						|
    {
 | 
						|
      @SuppressWarnings("unchecked") List<Test> tests = (List<Test>) $2;
 | 
						|
      $$ = new Selector (Selector.ATTRIBUTE, tests);
 | 
						|
    }
 | 
						|
  | axis_name DOUBLE_COLON step_node_test
 | 
						|
    {
 | 
						|
      @SuppressWarnings("unchecked") List<Test> tests = (List<Test>) $3;
 | 
						|
      $$ = new Selector (((Integer) $1).intValue (), tests);
 | 
						|
    }
 | 
						|
  | DOT
 | 
						|
    {
 | 
						|
      List<Test> emptyList = Collections.emptyList();
 | 
						|
      $$ = new Selector (Selector.SELF, emptyList);
 | 
						|
    }
 | 
						|
  | DOUBLE_DOT
 | 
						|
    {
 | 
						|
      List<Test> emptyList = Collections.emptyList();
 | 
						|
      $$ = new Selector (Selector.PARENT, emptyList);
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
step_node_test:
 | 
						|
  node_test
 | 
						|
    {
 | 
						|
      List<Test> list = new ArrayList<Test>();
 | 
						|
      list.add((Test) $1);
 | 
						|
      $$ = list;
 | 
						|
    }
 | 
						|
  | step_node_test predicate
 | 
						|
    {
 | 
						|
      /* This is safe as we create this in one of the other cases */
 | 
						|
      @SuppressWarnings("unchecked") List<Test> tests = (List<Test>)$1;
 | 
						|
      tests.add((Test) $2);
 | 
						|
      $$ = list;
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
/*predicate_list:
 | 
						|
  predicate
 | 
						|
    {
 | 
						|
      List list = new ArrayList ();
 | 
						|
      list.add ($1);
 | 
						|
      $$ = list;
 | 
						|
    }
 | 
						|
  | predicate predicate_list
 | 
						|
    {
 | 
						|
      List list = (List) $3;
 | 
						|
      list.add (0, $1);
 | 
						|
      $$ = list;
 | 
						|
    }
 | 
						|
  ;*/
 | 
						|
 | 
						|
axis_name:
 | 
						|
  ANCESTOR
 | 
						|
    {
 | 
						|
      $$ = new Integer(Selector.ANCESTOR);
 | 
						|
    }
 | 
						|
  | ANCESTOR_OR_SELF
 | 
						|
    {
 | 
						|
      $$ = new Integer(Selector.ANCESTOR_OR_SELF);
 | 
						|
    }
 | 
						|
  | ATTRIBUTE
 | 
						|
    {
 | 
						|
      $$ = new Integer(Selector.ATTRIBUTE);
 | 
						|
    }
 | 
						|
  | CHILD
 | 
						|
    {
 | 
						|
      $$ = new Integer(Selector.CHILD);
 | 
						|
    }
 | 
						|
  | DESCENDANT
 | 
						|
    {
 | 
						|
      $$ = new Integer(Selector.DESCENDANT);
 | 
						|
    }
 | 
						|
  | DESCENDANT_OR_SELF
 | 
						|
    {
 | 
						|
      $$ = new Integer(Selector.DESCENDANT_OR_SELF);
 | 
						|
    }
 | 
						|
  | FOLLOWING
 | 
						|
    {
 | 
						|
      $$ = new Integer(Selector.FOLLOWING);
 | 
						|
    }
 | 
						|
  | FOLLOWING_SIBLING
 | 
						|
    {
 | 
						|
      $$ = new Integer(Selector.FOLLOWING_SIBLING);
 | 
						|
    }
 | 
						|
  | NAMESPACE
 | 
						|
    {
 | 
						|
      $$ = new Integer(Selector.NAMESPACE);
 | 
						|
    }
 | 
						|
  | PARENT
 | 
						|
    {
 | 
						|
      $$ = new Integer(Selector.PARENT);
 | 
						|
    }
 | 
						|
  | PRECEDING
 | 
						|
    {
 | 
						|
      $$ = new Integer(Selector.PRECEDING);
 | 
						|
    }
 | 
						|
  | PRECEDING_SIBLING
 | 
						|
    {
 | 
						|
      $$ = new Integer(Selector.PRECEDING_SIBLING);
 | 
						|
    }
 | 
						|
  | SELF
 | 
						|
    {
 | 
						|
      $$ = new Integer(Selector.SELF);
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
node_test:
 | 
						|
  name_test
 | 
						|
  /*| PROCESSING_INSTRUCTION LP LITERAL RP*/
 | 
						|
  | PROCESSING_INSTRUCTION LITERAL RP
 | 
						|
    {
 | 
						|
      $$ = new NodeTypeTest(Node.PROCESSING_INSTRUCTION_NODE, (String) $2);
 | 
						|
    }
 | 
						|
  /*| node_type LP RP*/
 | 
						|
  | node_type RP
 | 
						|
    {
 | 
						|
      $$ = new NodeTypeTest(((Short) $1).shortValue());
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
predicate:
 | 
						|
  LB expr RB
 | 
						|
    {
 | 
						|
      $$ = new Predicate((Expr) $2);
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
primary_expr:
 | 
						|
  variable_reference
 | 
						|
  | LP expr RP
 | 
						|
    {
 | 
						|
      $$ = new ParenthesizedExpr((Expr) $2);
 | 
						|
    }
 | 
						|
  | LITERAL
 | 
						|
    {
 | 
						|
      $$ = new Constant($1);
 | 
						|
    }
 | 
						|
  | number
 | 
						|
    {
 | 
						|
      $$ = new Constant($1);
 | 
						|
    }
 | 
						|
  | function_call
 | 
						|
  ;
 | 
						|
 | 
						|
function_call:
 | 
						|
  function_name LP RP
 | 
						|
    {
 | 
						|
      List<Expr> emptyList = Collections.emptyList();
 | 
						|
      $$ = lookupFunction((String) $1, emptyList);
 | 
						|
    }
 | 
						|
  | function_name LP argument_list RP
 | 
						|
    {
 | 
						|
      /* This is safe as we create this below  */
 | 
						|
      @SuppressWarnings("unchecked") List<Expr> exprs = (List<Expr>) $3;
 | 
						|
      $$ = lookupFunction((String) $1, (List) exprs);
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
argument_list:
 | 
						|
  expr
 | 
						|
    {
 | 
						|
      List<Expr> list = new ArrayList<Expr>();
 | 
						|
      list.add((Expr) $1);
 | 
						|
      $$ = list;
 | 
						|
    }
 | 
						|
  | expr COMMA argument_list
 | 
						|
    {
 | 
						|
      /* This is safe as we create this above  */
 | 
						|
      @SuppressWarnings("unchecked") List<Expr> list = (List<Expr>) $3;
 | 
						|
      list.add(0, (Expr) $1);
 | 
						|
      $$ = list;
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
union_expr:
 | 
						|
  path_expr
 | 
						|
  | union_expr PIPE path_expr
 | 
						|
    {
 | 
						|
      $$ = new UnionExpr((Expr) $1, (Expr) $3);
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
path_expr:
 | 
						|
  location_path
 | 
						|
  | filter_expr
 | 
						|
  | filter_expr SLASH relative_location_path
 | 
						|
    {
 | 
						|
      Steps steps;
 | 
						|
      if ($3 instanceof Steps)
 | 
						|
        {
 | 
						|
          steps = (Steps) $3;
 | 
						|
        }
 | 
						|
      else
 | 
						|
        {
 | 
						|
          steps = new Steps();
 | 
						|
          steps.path.addFirst((Expr) $3);
 | 
						|
        }
 | 
						|
      steps.path.addFirst((Expr) $1);
 | 
						|
      $$ = steps;
 | 
						|
      //$$ = new Step ((Expr) $1, (Path) $3);
 | 
						|
    }
 | 
						|
  | filter_expr DOUBLE_SLASH relative_location_path
 | 
						|
    {
 | 
						|
      Test nt = new NodeTypeTest((short) 0);
 | 
						|
      Selector s = new Selector(Selector.DESCENDANT_OR_SELF,
 | 
						|
                                Collections.singletonList(nt));
 | 
						|
      Steps steps;
 | 
						|
      if ($3 instanceof Steps)
 | 
						|
        {
 | 
						|
          steps = (Steps) $3;
 | 
						|
        }
 | 
						|
      else
 | 
						|
        {
 | 
						|
          steps = new Steps();
 | 
						|
          steps.path.addFirst($3);
 | 
						|
        }
 | 
						|
      steps.path.addFirst(s);
 | 
						|
      steps.path.addFirst((Expr) $1);
 | 
						|
      $$ = steps;
 | 
						|
      //Step step = new Step (s, (Path) $3);
 | 
						|
      //$$ = new Step ((Expr) $1, step);
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
filter_expr:
 | 
						|
  primary_expr
 | 
						|
  | filter_expr predicate
 | 
						|
    {
 | 
						|
      Predicate filter = (Predicate) $2;
 | 
						|
      Selector s = new Selector(Selector.SELF,
 | 
						|
                                Collections.singletonList(filter));
 | 
						|
      Steps steps;
 | 
						|
      if ($1 instanceof Steps)
 | 
						|
        {
 | 
						|
          steps = (Steps) $1;
 | 
						|
        }
 | 
						|
      else
 | 
						|
        {
 | 
						|
          steps = new Steps();
 | 
						|
          steps.path.addFirst((Expr) $1);
 | 
						|
        }
 | 
						|
      steps.path.addLast(s);
 | 
						|
      $$ = steps;
 | 
						|
      //$$ = new Step ((Expr) $1, s);
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
or_expr:
 | 
						|
  and_expr
 | 
						|
  | or_expr OR and_expr
 | 
						|
    {
 | 
						|
      $$ = new OrExpr((Expr) $1, (Expr) $3);
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
and_expr:
 | 
						|
  equality_expr
 | 
						|
  | and_expr AND equality_expr
 | 
						|
    {
 | 
						|
      $$ = new AndExpr((Expr) $1, (Expr) $3);
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
equality_expr:
 | 
						|
  relational_expr
 | 
						|
  | equality_expr EQ relational_expr
 | 
						|
    {
 | 
						|
      $$ = new EqualityExpr((Expr) $1, (Expr) $3, false);
 | 
						|
    }
 | 
						|
  | equality_expr NE relational_expr
 | 
						|
    {
 | 
						|
      $$ = new EqualityExpr((Expr) $1, (Expr) $3, true);
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
relational_expr:
 | 
						|
  additive_expr
 | 
						|
  | relational_expr LT additive_expr
 | 
						|
    {
 | 
						|
      $$ = new RelationalExpr((Expr) $1, (Expr) $3, true, false);
 | 
						|
    }
 | 
						|
  | relational_expr GT additive_expr
 | 
						|
    {
 | 
						|
      $$ = new RelationalExpr((Expr) $1, (Expr) $3, false, false);
 | 
						|
    }
 | 
						|
  | relational_expr LTE additive_expr
 | 
						|
    {
 | 
						|
      $$ = new RelationalExpr((Expr) $1, (Expr) $3, true, true);
 | 
						|
    }
 | 
						|
  | relational_expr GTE additive_expr
 | 
						|
    {
 | 
						|
      $$ = new RelationalExpr((Expr) $1, (Expr) $3, false, true);
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
additive_expr:
 | 
						|
  multiplicative_expr
 | 
						|
  | additive_expr PLUS multiplicative_expr
 | 
						|
    {
 | 
						|
      $$ = new ArithmeticExpr((Expr) $1, (Expr) $3, ArithmeticExpr.ADD);
 | 
						|
    }
 | 
						|
  | additive_expr MINUS multiplicative_expr
 | 
						|
    {
 | 
						|
      $$ = new ArithmeticExpr((Expr) $1, (Expr) $3, ArithmeticExpr.SUBTRACT);
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
multiplicative_expr:
 | 
						|
  unary_expr
 | 
						|
  | multiplicative_expr STAR unary_expr
 | 
						|
    {
 | 
						|
      $$ = new ArithmeticExpr((Expr) $1, (Expr) $3, ArithmeticExpr.MULTIPLY);
 | 
						|
    }
 | 
						|
  | multiplicative_expr DIV unary_expr
 | 
						|
    {
 | 
						|
      $$ = new ArithmeticExpr((Expr) $1, (Expr) $3, ArithmeticExpr.DIVIDE);
 | 
						|
    }
 | 
						|
  | multiplicative_expr MOD unary_expr
 | 
						|
    {
 | 
						|
      $$ = new ArithmeticExpr((Expr) $1, (Expr) $3, ArithmeticExpr.MODULO);
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
unary_expr:
 | 
						|
  union_expr
 | 
						|
  | MINUS unary_expr %prec UNARY
 | 
						|
    {
 | 
						|
      $$ = new NegativeExpr((Expr) $2);
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
number:
 | 
						|
  DIGITS
 | 
						|
    {
 | 
						|
      $$ = new Double((String) $1 + ".0");
 | 
						|
    }
 | 
						|
  | DIGITS DOT
 | 
						|
    {
 | 
						|
      $$ = new Double((String) $1 + ".0");
 | 
						|
    }
 | 
						|
  | DIGITS DOT DIGITS
 | 
						|
    {
 | 
						|
      $$ = new Double((String) $1 + "." + (String) $3);
 | 
						|
    }
 | 
						|
  | DOT DIGITS
 | 
						|
    {
 | 
						|
      $$ = new Double("0." + (String) $2);
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
function_name:
 | 
						|
  qname
 | 
						|
/*  | node_type
 | 
						|
    {
 | 
						|
      switch (((Short) $1).shortValue ())
 | 
						|
        {
 | 
						|
        case Node.COMMENT_NODE:
 | 
						|
          $$ = "comment";
 | 
						|
          break;
 | 
						|
        case Node.TEXT_NODE:
 | 
						|
          $$ = "text";
 | 
						|
          break;
 | 
						|
        case Node.PROCESSING_INSTRUCTION_NODE:
 | 
						|
          $$ = "processing-instruction";
 | 
						|
          break;
 | 
						|
        default:
 | 
						|
          $$ = "node";
 | 
						|
          break;
 | 
						|
        }
 | 
						|
    }*/
 | 
						|
  ;
 | 
						|
 | 
						|
variable_reference:
 | 
						|
  DOLLAR qname
 | 
						|
    {
 | 
						|
      String name = (String) $2;
 | 
						|
      $$ = new VariableReference(variableResolver, getQName(name));
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
name_test:
 | 
						|
  STAR
 | 
						|
    {
 | 
						|
      $$ = new NameTest(null, true, true);
 | 
						|
    }
 | 
						|
  | NAME COLON STAR
 | 
						|
    {
 | 
						|
      QName qName = getQName((String) $1);
 | 
						|
      $$ = new NameTest(qName, true, false);
 | 
						|
    }
 | 
						|
  | qname
 | 
						|
    {
 | 
						|
      QName qName = getQName((String) $1);
 | 
						|
      $$ = new NameTest(qName, false, false);
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
qname:
 | 
						|
  NAME
 | 
						|
  | NAME COLON NAME
 | 
						|
    {
 | 
						|
      $$ = (String) $1 + ':' + (String) $3;
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
node_type:
 | 
						|
  COMMENT
 | 
						|
    {
 | 
						|
      $$ = new Short(Node.COMMENT_NODE);
 | 
						|
    }
 | 
						|
  | TEXT
 | 
						|
    {
 | 
						|
      $$ = new Short(Node.TEXT_NODE);
 | 
						|
    }
 | 
						|
  | PROCESSING_INSTRUCTION
 | 
						|
    {
 | 
						|
      $$ = new Short(Node.PROCESSING_INSTRUCTION_NODE);
 | 
						|
    }
 | 
						|
  | NODE
 | 
						|
    {
 | 
						|
      $$ = new Short((short) 0);
 | 
						|
    }
 | 
						|
  ;
 | 
						|
 | 
						|
%%
 | 
						|
 | 
						|
}
 |