content: /*
   *  This file is part of AndroidIDE.
   *
   *  AndroidIDE 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 3 of the License, or
   *  (at your option) any later version.
   *
   *  AndroidIDE 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 AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
   */
  
  /*
   * reserved comment block
   * DO NOT REMOVE OR ALTER!
   */
  /*
   * Copyright 2001-2004 The Apache Software Foundation.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  /*
   * $Id: UnresolvedRef.java,v 1.5 2005/09/28 13:48:17 pvedula Exp $
   */
  
  package jaxp.sun.org.apache.xalan.internal.xsltc.compiler;
  
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.ErrorMsg;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
  
  /**
   * @author Morten Jorgensen
   */
  final class UnresolvedRef extends VariableRefBase {
  
      private QName _variableName = null;
      private VariableRefBase _ref = null;
  
      public UnresolvedRef(QName name) {
          super();
          _variableName = name;
      }
  
      public QName getName() {
          return(_variableName);
      }
  
      private ErrorMsg reportError() {
          ErrorMsg err = new ErrorMsg(ErrorMsg.VARIABLE_UNDEF_ERR,
                                      _variableName, this);
          getParser().reportError(ERROR, err);
          return(err);
      }
  
      private VariableRefBase resolve(Parser parser, SymbolTable stable) {
          // At this point the AST is already built and we should be able to
          // find any declared global variable or parameter
          VariableBase ref = parser.lookupVariable(_variableName);
          if (ref == null) {
              ref = (VariableBase)stable.lookupName(_variableName);
          }
          if (ref == null) {
              reportError();
              return null;
          }
  
          // If in a top-level element, create dependency to the referenced var
          _variable = ref;
          addParentDependency();
  
          if (ref instanceof Variable) {
              return new VariableRef((Variable) ref);
          }
          else if (ref instanceof Param) {
              return new ParameterRef((Param)ref);
          }
          return null;
      }
  
      public Type typeCheck(SymbolTable stable) throws TypeCheckError {
          if (_ref != null) {
              final String name = _variableName.toString();
              ErrorMsg err = new ErrorMsg(ErrorMsg.CIRCULAR_VARIABLE_ERR,
                                          name, this);
          }
          if ((_ref = resolve(getParser(), stable)) != null) {
              return (_type = _ref.typeCheck(stable));
          }
          throw new TypeCheckError(reportError());
      }
  
      public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
          if (_ref != null)
              _ref.translate(classGen, methodGen);
          else
              reportError();
      }
  
      public String toString() {
          return "unresolved-ref()";
      }
  
  }
  